TextView.java revision 0925f40372cb140fd9e2a55ec0b5c645e90f3b84 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
20
21import android.R;
22import android.annotation.ColorInt;
23import android.annotation.DrawableRes;
24import android.annotation.FloatRange;
25import android.annotation.NonNull;
26import android.annotation.Nullable;
27import android.annotation.Size;
28import android.annotation.StringRes;
29import android.annotation.StyleRes;
30import android.annotation.XmlRes;
31import android.app.Activity;
32import android.app.assist.AssistStructure;
33import android.content.ClipData;
34import android.content.ClipboardManager;
35import android.content.Context;
36import android.content.Intent;
37import android.content.UndoManager;
38import android.content.res.ColorStateList;
39import android.content.res.CompatibilityInfo;
40import android.content.res.Configuration;
41import android.content.res.Resources;
42import android.content.res.TypedArray;
43import android.content.res.XmlResourceParser;
44import android.graphics.Canvas;
45import android.graphics.Insets;
46import android.graphics.Paint;
47import android.graphics.Path;
48import android.graphics.PorterDuff;
49import android.graphics.Rect;
50import android.graphics.RectF;
51import android.graphics.Typeface;
52import android.graphics.drawable.Drawable;
53import android.os.AsyncTask;
54import android.os.Bundle;
55import android.os.Parcel;
56import android.os.Parcelable;
57import android.os.ParcelableParcel;
58import android.os.SystemClock;
59import android.os.UserHandle;
60import android.provider.Settings;
61import android.text.BoringLayout;
62import android.text.DynamicLayout;
63import android.text.Editable;
64import android.text.GetChars;
65import android.text.GraphicsOperations;
66import android.text.InputFilter;
67import android.text.InputType;
68import android.text.Layout;
69import android.text.ParcelableSpan;
70import android.text.Selection;
71import android.text.SpanWatcher;
72import android.text.Spannable;
73import android.text.SpannableString;
74import android.text.SpannableStringBuilder;
75import android.text.Spanned;
76import android.text.SpannedString;
77import android.text.StaticLayout;
78import android.text.TextDirectionHeuristic;
79import android.text.TextDirectionHeuristics;
80import android.text.TextPaint;
81import android.text.TextUtils;
82import android.text.TextUtils.TruncateAt;
83import android.text.TextWatcher;
84import android.text.method.AllCapsTransformationMethod;
85import android.text.method.ArrowKeyMovementMethod;
86import android.text.method.DateKeyListener;
87import android.text.method.DateTimeKeyListener;
88import android.text.method.DialerKeyListener;
89import android.text.method.DigitsKeyListener;
90import android.text.method.KeyListener;
91import android.text.method.LinkMovementMethod;
92import android.text.method.MetaKeyKeyListener;
93import android.text.method.MovementMethod;
94import android.text.method.PasswordTransformationMethod;
95import android.text.method.SingleLineTransformationMethod;
96import android.text.method.TextKeyListener;
97import android.text.method.TimeKeyListener;
98import android.text.method.TransformationMethod;
99import android.text.method.TransformationMethod2;
100import android.text.method.WordIterator;
101import android.text.style.CharacterStyle;
102import android.text.style.ClickableSpan;
103import android.text.style.ParagraphStyle;
104import android.text.style.SpellCheckSpan;
105import android.text.style.SuggestionSpan;
106import android.text.style.URLSpan;
107import android.text.style.UpdateAppearance;
108import android.text.util.Linkify;
109import android.util.AttributeSet;
110import android.util.LocaleList;
111import android.util.Log;
112import android.util.TypedValue;
113import android.view.AccessibilityIterators.TextSegmentIterator;
114import android.view.ActionMode;
115import android.view.Choreographer;
116import android.view.ContextMenu;
117import android.view.DragEvent;
118import android.view.Gravity;
119import android.view.HapticFeedbackConstants;
120import android.view.KeyCharacterMap;
121import android.view.KeyEvent;
122import android.view.MotionEvent;
123import android.view.PointerIcon;
124import android.view.View;
125import android.view.ViewConfiguration;
126import android.view.ViewDebug;
127import android.view.ViewGroup.LayoutParams;
128import android.view.ViewHierarchyEncoder;
129import android.view.ViewParent;
130import android.view.ViewRootImpl;
131import android.view.ViewStructure;
132import android.view.ViewTreeObserver;
133import android.view.accessibility.AccessibilityEvent;
134import android.view.accessibility.AccessibilityManager;
135import android.view.accessibility.AccessibilityNodeInfo;
136import android.view.animation.AnimationUtils;
137import android.view.inputmethod.BaseInputConnection;
138import android.view.inputmethod.CompletionInfo;
139import android.view.inputmethod.CorrectionInfo;
140import android.view.inputmethod.EditorInfo;
141import android.view.inputmethod.ExtractedText;
142import android.view.inputmethod.ExtractedTextRequest;
143import android.view.inputmethod.InputConnection;
144import android.view.inputmethod.InputMethodManager;
145import android.view.textservice.SpellCheckerSubtype;
146import android.view.textservice.TextServicesManager;
147import android.widget.RemoteViews.RemoteView;
148
149import com.android.internal.annotations.VisibleForTesting;
150import com.android.internal.util.FastMath;
151import com.android.internal.widget.EditableInputConnection;
152
153import org.xmlpull.v1.XmlPullParserException;
154
155import java.io.IOException;
156import java.lang.ref.WeakReference;
157import java.util.ArrayList;
158import java.util.Locale;
159
160/**
161 * Displays text to the user and optionally allows them to edit it.  A TextView
162 * is a complete text editor, however the basic class is configured to not
163 * allow editing; see {@link EditText} for a subclass that configures the text
164 * view for editing.
165 *
166 * <p>
167 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
168 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
169 * android:textIsSelectable} to "true" or call
170 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
171 * allows users to make selection gestures in the TextView, which in turn triggers the system's
172 * built-in copy/paste controls.
173 * <p>
174 * <b>XML attributes</b>
175 * <p>
176 * See {@link android.R.styleable#TextView TextView Attributes},
177 * {@link android.R.styleable#View View Attributes}
178 *
179 * @attr ref android.R.styleable#TextView_text
180 * @attr ref android.R.styleable#TextView_bufferType
181 * @attr ref android.R.styleable#TextView_hint
182 * @attr ref android.R.styleable#TextView_textColor
183 * @attr ref android.R.styleable#TextView_textColorHighlight
184 * @attr ref android.R.styleable#TextView_textColorHint
185 * @attr ref android.R.styleable#TextView_textAppearance
186 * @attr ref android.R.styleable#TextView_textColorLink
187 * @attr ref android.R.styleable#TextView_textSize
188 * @attr ref android.R.styleable#TextView_textScaleX
189 * @attr ref android.R.styleable#TextView_fontFamily
190 * @attr ref android.R.styleable#TextView_typeface
191 * @attr ref android.R.styleable#TextView_textStyle
192 * @attr ref android.R.styleable#TextView_cursorVisible
193 * @attr ref android.R.styleable#TextView_maxLines
194 * @attr ref android.R.styleable#TextView_maxHeight
195 * @attr ref android.R.styleable#TextView_lines
196 * @attr ref android.R.styleable#TextView_height
197 * @attr ref android.R.styleable#TextView_minLines
198 * @attr ref android.R.styleable#TextView_minHeight
199 * @attr ref android.R.styleable#TextView_maxEms
200 * @attr ref android.R.styleable#TextView_maxWidth
201 * @attr ref android.R.styleable#TextView_ems
202 * @attr ref android.R.styleable#TextView_width
203 * @attr ref android.R.styleable#TextView_minEms
204 * @attr ref android.R.styleable#TextView_minWidth
205 * @attr ref android.R.styleable#TextView_gravity
206 * @attr ref android.R.styleable#TextView_scrollHorizontally
207 * @attr ref android.R.styleable#TextView_password
208 * @attr ref android.R.styleable#TextView_singleLine
209 * @attr ref android.R.styleable#TextView_selectAllOnFocus
210 * @attr ref android.R.styleable#TextView_includeFontPadding
211 * @attr ref android.R.styleable#TextView_maxLength
212 * @attr ref android.R.styleable#TextView_shadowColor
213 * @attr ref android.R.styleable#TextView_shadowDx
214 * @attr ref android.R.styleable#TextView_shadowDy
215 * @attr ref android.R.styleable#TextView_shadowRadius
216 * @attr ref android.R.styleable#TextView_autoLink
217 * @attr ref android.R.styleable#TextView_linksClickable
218 * @attr ref android.R.styleable#TextView_numeric
219 * @attr ref android.R.styleable#TextView_digits
220 * @attr ref android.R.styleable#TextView_phoneNumber
221 * @attr ref android.R.styleable#TextView_inputMethod
222 * @attr ref android.R.styleable#TextView_capitalize
223 * @attr ref android.R.styleable#TextView_autoText
224 * @attr ref android.R.styleable#TextView_editable
225 * @attr ref android.R.styleable#TextView_freezesText
226 * @attr ref android.R.styleable#TextView_ellipsize
227 * @attr ref android.R.styleable#TextView_drawableTop
228 * @attr ref android.R.styleable#TextView_drawableBottom
229 * @attr ref android.R.styleable#TextView_drawableRight
230 * @attr ref android.R.styleable#TextView_drawableLeft
231 * @attr ref android.R.styleable#TextView_drawableStart
232 * @attr ref android.R.styleable#TextView_drawableEnd
233 * @attr ref android.R.styleable#TextView_drawablePadding
234 * @attr ref android.R.styleable#TextView_drawableTint
235 * @attr ref android.R.styleable#TextView_drawableTintMode
236 * @attr ref android.R.styleable#TextView_lineSpacingExtra
237 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
238 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
239 * @attr ref android.R.styleable#TextView_inputType
240 * @attr ref android.R.styleable#TextView_imeOptions
241 * @attr ref android.R.styleable#TextView_privateImeOptions
242 * @attr ref android.R.styleable#TextView_imeActionLabel
243 * @attr ref android.R.styleable#TextView_imeActionId
244 * @attr ref android.R.styleable#TextView_editorExtras
245 * @attr ref android.R.styleable#TextView_elegantTextHeight
246 * @attr ref android.R.styleable#TextView_letterSpacing
247 * @attr ref android.R.styleable#TextView_fontFeatureSettings
248 * @attr ref android.R.styleable#TextView_breakStrategy
249 * @attr ref android.R.styleable#TextView_hyphenationFrequency
250 */
251@RemoteView
252public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
253    static final String LOG_TAG = "TextView";
254    static final boolean DEBUG_EXTRACT = false;
255
256    // Enum for the "typeface" XML parameter.
257    // TODO: How can we get this from the XML instead of hardcoding it here?
258    private static final int SANS = 1;
259    private static final int SERIF = 2;
260    private static final int MONOSPACE = 3;
261
262    // Bitfield for the "numeric" XML parameter.
263    // TODO: How can we get this from the XML instead of hardcoding it here?
264    private static final int SIGNED = 2;
265    private static final int DECIMAL = 4;
266
267    /**
268     * Draw marquee text with fading edges as usual
269     */
270    private static final int MARQUEE_FADE_NORMAL = 0;
271
272    /**
273     * Draw marquee text as ellipsize end while inactive instead of with the fade.
274     * (Useful for devices where the fade can be expensive if overdone)
275     */
276    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
277
278    /**
279     * Draw marquee text with fading edges because it is currently active/animating.
280     */
281    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
282
283    private static final int LINES = 1;
284    private static final int EMS = LINES;
285    private static final int PIXELS = 2;
286
287    private static final RectF TEMP_RECTF = new RectF();
288
289    /** @hide */
290    static final int VERY_WIDE = 1024 * 1024; // XXX should be much larger
291    private static final int ANIMATED_SCROLL_GAP = 250;
292
293    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
294    private static final Spanned EMPTY_SPANNED = new SpannedString("");
295
296    private static final int CHANGE_WATCHER_PRIORITY = 100;
297
298    // New state used to change background based on whether this TextView is multiline.
299    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
300
301    // Accessibility action to share selected text.
302    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
303
304    /**
305     * @hide
306     */
307    // Accessibility action start id for "process text" actions.
308    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
309
310    /**
311     * @hide
312     */
313    static final int PROCESS_TEXT_REQUEST_CODE = 100;
314
315    /**
316     *  Return code of {@link #doKeyDown}.
317     */
318    private static final int KEY_EVENT_NOT_HANDLED = 0;
319    private static final int KEY_EVENT_HANDLED = -1;
320    private static final int KEY_DOWN_HANDLED_BY_KEY_LISTENER = 1;
321    private static final int KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD = 2;
322
323    // System wide time for last cut, copy or text changed action.
324    static long sLastCutCopyOrTextChangedTime;
325
326    private ColorStateList mTextColor;
327    private ColorStateList mHintTextColor;
328    private ColorStateList mLinkTextColor;
329    @ViewDebug.ExportedProperty(category = "text")
330    private int mCurTextColor;
331    private int mCurHintTextColor;
332    private boolean mFreezesText;
333    private boolean mDispatchTemporaryDetach;
334
335    /** Whether this view is temporarily detached from the parent view. */
336    boolean mTemporaryDetach;
337
338    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
339    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
340
341    private float mShadowRadius, mShadowDx, mShadowDy;
342    private int mShadowColor;
343
344    private boolean mPreDrawRegistered;
345    private boolean mPreDrawListenerDetached;
346
347    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
348    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
349    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
350    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
351    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
352    private boolean mPreventDefaultMovement;
353
354    private TextUtils.TruncateAt mEllipsize;
355
356    static class Drawables {
357        static final int LEFT = 0;
358        static final int TOP = 1;
359        static final int RIGHT = 2;
360        static final int BOTTOM = 3;
361
362        static final int DRAWABLE_NONE = -1;
363        static final int DRAWABLE_RIGHT = 0;
364        static final int DRAWABLE_LEFT = 1;
365
366        final Rect mCompoundRect = new Rect();
367
368        final Drawable[] mShowing = new Drawable[4];
369
370        ColorStateList mTintList;
371        PorterDuff.Mode mTintMode;
372        boolean mHasTint;
373        boolean mHasTintMode;
374
375        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
376        Drawable mDrawableLeftInitial, mDrawableRightInitial;
377
378        boolean mIsRtlCompatibilityMode;
379        boolean mOverride;
380
381        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
382                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
383
384        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
385                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
386
387        int mDrawablePadding;
388
389        int mDrawableSaved = DRAWABLE_NONE;
390
391        public Drawables(Context context) {
392            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
393            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
394                !context.getApplicationInfo().hasRtlSupport());
395            mOverride = false;
396        }
397
398        /**
399         * @return {@code true} if this object contains metadata that needs to
400         *         be retained, {@code false} otherwise
401         */
402        public boolean hasMetadata() {
403            return mDrawablePadding != 0 || mHasTintMode || mHasTint;
404        }
405
406        /**
407         * Updates the list of displayed drawables to account for the current
408         * layout direction.
409         *
410         * @param layoutDirection the current layout direction
411         * @return {@code true} if the displayed drawables changed
412         */
413        public boolean resolveWithLayoutDirection(int layoutDirection) {
414            final Drawable previousLeft = mShowing[Drawables.LEFT];
415            final Drawable previousRight = mShowing[Drawables.RIGHT];
416
417            // First reset "left" and "right" drawables to their initial values
418            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
419            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
420
421            if (mIsRtlCompatibilityMode) {
422                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
423                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
424                    mShowing[Drawables.LEFT] = mDrawableStart;
425                    mDrawableSizeLeft = mDrawableSizeStart;
426                    mDrawableHeightLeft = mDrawableHeightStart;
427                }
428                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
429                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
430                    mShowing[Drawables.RIGHT] = mDrawableEnd;
431                    mDrawableSizeRight = mDrawableSizeEnd;
432                    mDrawableHeightRight = mDrawableHeightEnd;
433                }
434            } else {
435                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
436                // drawable if and only if they have been defined
437                switch(layoutDirection) {
438                    case LAYOUT_DIRECTION_RTL:
439                        if (mOverride) {
440                            mShowing[Drawables.RIGHT] = mDrawableStart;
441                            mDrawableSizeRight = mDrawableSizeStart;
442                            mDrawableHeightRight = mDrawableHeightStart;
443
444                            mShowing[Drawables.LEFT] = mDrawableEnd;
445                            mDrawableSizeLeft = mDrawableSizeEnd;
446                            mDrawableHeightLeft = mDrawableHeightEnd;
447                        }
448                        break;
449
450                    case LAYOUT_DIRECTION_LTR:
451                    default:
452                        if (mOverride) {
453                            mShowing[Drawables.LEFT] = mDrawableStart;
454                            mDrawableSizeLeft = mDrawableSizeStart;
455                            mDrawableHeightLeft = mDrawableHeightStart;
456
457                            mShowing[Drawables.RIGHT] = mDrawableEnd;
458                            mDrawableSizeRight = mDrawableSizeEnd;
459                            mDrawableHeightRight = mDrawableHeightEnd;
460                        }
461                        break;
462                }
463            }
464
465            applyErrorDrawableIfNeeded(layoutDirection);
466
467            return mShowing[Drawables.LEFT] != previousLeft
468                    || mShowing[Drawables.RIGHT] != previousRight;
469        }
470
471        public void setErrorDrawable(Drawable dr, TextView tv) {
472            if (mDrawableError != dr && mDrawableError != null) {
473                mDrawableError.setCallback(null);
474            }
475            mDrawableError = dr;
476
477            if (mDrawableError != null) {
478                final Rect compoundRect = mCompoundRect;
479                final int[] state = tv.getDrawableState();
480
481                mDrawableError.setState(state);
482                mDrawableError.copyBounds(compoundRect);
483                mDrawableError.setCallback(tv);
484                mDrawableSizeError = compoundRect.width();
485                mDrawableHeightError = compoundRect.height();
486            } else {
487                mDrawableSizeError = mDrawableHeightError = 0;
488            }
489        }
490
491        private void applyErrorDrawableIfNeeded(int layoutDirection) {
492            // first restore the initial state if needed
493            switch (mDrawableSaved) {
494                case DRAWABLE_LEFT:
495                    mShowing[Drawables.LEFT] = mDrawableTemp;
496                    mDrawableSizeLeft = mDrawableSizeTemp;
497                    mDrawableHeightLeft = mDrawableHeightTemp;
498                    break;
499                case DRAWABLE_RIGHT:
500                    mShowing[Drawables.RIGHT] = mDrawableTemp;
501                    mDrawableSizeRight = mDrawableSizeTemp;
502                    mDrawableHeightRight = mDrawableHeightTemp;
503                    break;
504                case DRAWABLE_NONE:
505                default:
506            }
507            // then, if needed, assign the Error drawable to the correct location
508            if (mDrawableError != null) {
509                switch(layoutDirection) {
510                    case LAYOUT_DIRECTION_RTL:
511                        mDrawableSaved = DRAWABLE_LEFT;
512
513                        mDrawableTemp = mShowing[Drawables.LEFT];
514                        mDrawableSizeTemp = mDrawableSizeLeft;
515                        mDrawableHeightTemp = mDrawableHeightLeft;
516
517                        mShowing[Drawables.LEFT] = mDrawableError;
518                        mDrawableSizeLeft = mDrawableSizeError;
519                        mDrawableHeightLeft = mDrawableHeightError;
520                        break;
521                    case LAYOUT_DIRECTION_LTR:
522                    default:
523                        mDrawableSaved = DRAWABLE_RIGHT;
524
525                        mDrawableTemp = mShowing[Drawables.RIGHT];
526                        mDrawableSizeTemp = mDrawableSizeRight;
527                        mDrawableHeightTemp = mDrawableHeightRight;
528
529                        mShowing[Drawables.RIGHT] = mDrawableError;
530                        mDrawableSizeRight = mDrawableSizeError;
531                        mDrawableHeightRight = mDrawableHeightError;
532                        break;
533                }
534            }
535        }
536    }
537
538    Drawables mDrawables;
539
540    private CharWrapper mCharWrapper;
541
542    private Marquee mMarquee;
543    private boolean mRestartMarquee;
544
545    private int mMarqueeRepeatLimit = 3;
546
547    private int mLastLayoutDirection = -1;
548
549    /**
550     * On some devices the fading edges add a performance penalty if used
551     * extensively in the same layout. This mode indicates how the marquee
552     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
553     */
554    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
555
556    /**
557     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
558     * the layout that should be used when the mode switches.
559     */
560    private Layout mSavedMarqueeModeLayout;
561
562    @ViewDebug.ExportedProperty(category = "text")
563    private CharSequence mText;
564    private CharSequence mTransformed;
565    private BufferType mBufferType = BufferType.NORMAL;
566
567    private CharSequence mHint;
568    private Layout mHintLayout;
569
570    private MovementMethod mMovement;
571
572    private TransformationMethod mTransformation;
573    private boolean mAllowTransformationLengthChange;
574    private ChangeWatcher mChangeWatcher;
575
576    private ArrayList<TextWatcher> mListeners;
577
578    // display attributes
579    private final TextPaint mTextPaint;
580    private boolean mUserSetTextScaleX;
581    private Layout mLayout;
582    private boolean mLocalesChanged = false;
583
584    @ViewDebug.ExportedProperty(category = "text")
585    private int mGravity = Gravity.TOP | Gravity.START;
586    private boolean mHorizontallyScrolling;
587
588    private int mAutoLinkMask;
589    private boolean mLinksClickable = true;
590
591    private float mSpacingMult = 1.0f;
592    private float mSpacingAdd = 0.0f;
593
594    private int mBreakStrategy;
595    private int mHyphenationFrequency;
596
597    private int mMaximum = Integer.MAX_VALUE;
598    private int mMaxMode = LINES;
599    private int mMinimum = 0;
600    private int mMinMode = LINES;
601
602    private int mOldMaximum = mMaximum;
603    private int mOldMaxMode = mMaxMode;
604
605    private int mMaxWidth = Integer.MAX_VALUE;
606    private int mMaxWidthMode = PIXELS;
607    private int mMinWidth = 0;
608    private int mMinWidthMode = PIXELS;
609
610    private boolean mSingleLine;
611    private int mDesiredHeightAtMeasure = -1;
612    private boolean mIncludePad = true;
613    private int mDeferScroll = -1;
614
615    // tmp primitives, so we don't alloc them on each draw
616    private Rect mTempRect;
617    private long mLastScroll;
618    private Scroller mScroller;
619
620    private BoringLayout.Metrics mBoring, mHintBoring;
621    private BoringLayout mSavedLayout, mSavedHintLayout;
622
623    private TextDirectionHeuristic mTextDir;
624
625    private InputFilter[] mFilters = NO_FILTERS;
626
627    private volatile Locale mCurrentSpellCheckerLocaleCache;
628
629    // It is possible to have a selection even when mEditor is null (programmatically set, like when
630    // a link is pressed). These highlight-related fields do not go in mEditor.
631    int mHighlightColor = 0x6633B5E5;
632    private Path mHighlightPath;
633    private final Paint mHighlightPaint;
634    private boolean mHighlightPathBogus = true;
635
636    // Although these fields are specific to editable text, they are not added to Editor because
637    // they are defined by the TextView's style and are theme-dependent.
638    int mCursorDrawableRes;
639    // These six fields, could be moved to Editor, since we know their default values and we
640    // could condition the creation of the Editor to a non standard value. This is however
641    // brittle since the hardcoded values here (such as
642    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
643    // default style is modified.
644    int mTextSelectHandleLeftRes;
645    int mTextSelectHandleRightRes;
646    int mTextSelectHandleRes;
647    int mTextEditSuggestionItemLayout;
648    int mTextEditSuggestionContainerLayout;
649    int mTextEditSuggestionHighlightStyle;
650
651    /**
652     * EditText specific data, created on demand when one of the Editor fields is used.
653     * See {@link #createEditorIfNeeded()}.
654     */
655    private Editor mEditor;
656
657    private static final int DEVICE_PROVISIONED_UNKNOWN = 0;
658    private static final int DEVICE_PROVISIONED_NO = 1;
659    private static final int DEVICE_PROVISIONED_YES = 2;
660
661    /**
662     * Some special options such as sharing selected text should only be shown if the device
663     * is provisioned. Only check the provisioned state once for a given view instance.
664     */
665    private int mDeviceProvisionedState = DEVICE_PROVISIONED_UNKNOWN;
666
667    /**
668     * Kick-start the font cache for the zygote process (to pay the cost of
669     * initializing freetype for our default font only once).
670     * @hide
671     */
672    public static void preloadFontCache() {
673        Paint p = new Paint();
674        p.setAntiAlias(true);
675        // We don't care about the result, just the side-effect of measuring.
676        p.measureText("H");
677    }
678
679    /**
680     * Interface definition for a callback to be invoked when an action is
681     * performed on the editor.
682     */
683    public interface OnEditorActionListener {
684        /**
685         * Called when an action is being performed.
686         *
687         * @param v The view that was clicked.
688         * @param actionId Identifier of the action.  This will be either the
689         * identifier you supplied, or {@link EditorInfo#IME_NULL
690         * EditorInfo.IME_NULL} if being called due to the enter key
691         * being pressed.
692         * @param event If triggered by an enter key, this is the event;
693         * otherwise, this is null.
694         * @return Return true if you have consumed the action, else false.
695         */
696        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
697    }
698
699    public TextView(Context context) {
700        this(context, null);
701    }
702
703    public TextView(Context context, @Nullable AttributeSet attrs) {
704        this(context, attrs, com.android.internal.R.attr.textViewStyle);
705    }
706
707    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
708        this(context, attrs, defStyleAttr, 0);
709    }
710
711    @SuppressWarnings("deprecation")
712    public TextView(
713            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
714        super(context, attrs, defStyleAttr, defStyleRes);
715
716        mText = "";
717
718        final Resources res = getResources();
719        final CompatibilityInfo compat = res.getCompatibilityInfo();
720
721        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
722        mTextPaint.density = res.getDisplayMetrics().density;
723        mTextPaint.setCompatibilityScaling(compat.applicationScale);
724
725        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
726        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
727
728        mMovement = getDefaultMovementMethod();
729
730        mTransformation = null;
731
732        int textColorHighlight = 0;
733        ColorStateList textColor = null;
734        ColorStateList textColorHint = null;
735        ColorStateList textColorLink = null;
736        int textSize = 15;
737        String fontFamily = null;
738        boolean fontFamilyExplicit = false;
739        int typefaceIndex = -1;
740        int styleIndex = -1;
741        boolean allCaps = false;
742        int shadowcolor = 0;
743        float dx = 0, dy = 0, r = 0;
744        boolean elegant = false;
745        float letterSpacing = 0;
746        String fontFeatureSettings = null;
747        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
748        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
749
750        final Resources.Theme theme = context.getTheme();
751
752        /*
753         * Look the appearance up without checking first if it exists because
754         * almost every TextView has one and it greatly simplifies the logic
755         * to be able to parse the appearance first and then let specific tags
756         * for this View override it.
757         */
758        TypedArray a = theme.obtainStyledAttributes(attrs,
759                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
760        TypedArray appearance = null;
761        int ap = a.getResourceId(
762                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
763        a.recycle();
764        if (ap != -1) {
765            appearance = theme.obtainStyledAttributes(
766                    ap, com.android.internal.R.styleable.TextAppearance);
767        }
768        if (appearance != null) {
769            int n = appearance.getIndexCount();
770            for (int i = 0; i < n; i++) {
771                int attr = appearance.getIndex(i);
772
773                switch (attr) {
774                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
775                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
776                    break;
777
778                case com.android.internal.R.styleable.TextAppearance_textColor:
779                    textColor = appearance.getColorStateList(attr);
780                    break;
781
782                case com.android.internal.R.styleable.TextAppearance_textColorHint:
783                    textColorHint = appearance.getColorStateList(attr);
784                    break;
785
786                case com.android.internal.R.styleable.TextAppearance_textColorLink:
787                    textColorLink = appearance.getColorStateList(attr);
788                    break;
789
790                case com.android.internal.R.styleable.TextAppearance_textSize:
791                    textSize = appearance.getDimensionPixelSize(attr, textSize);
792                    break;
793
794                case com.android.internal.R.styleable.TextAppearance_typeface:
795                    typefaceIndex = appearance.getInt(attr, -1);
796                    break;
797
798                case com.android.internal.R.styleable.TextAppearance_fontFamily:
799                    fontFamily = appearance.getString(attr);
800                    break;
801
802                case com.android.internal.R.styleable.TextAppearance_textStyle:
803                    styleIndex = appearance.getInt(attr, -1);
804                    break;
805
806                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
807                    allCaps = appearance.getBoolean(attr, false);
808                    break;
809
810                case com.android.internal.R.styleable.TextAppearance_shadowColor:
811                    shadowcolor = appearance.getInt(attr, 0);
812                    break;
813
814                case com.android.internal.R.styleable.TextAppearance_shadowDx:
815                    dx = appearance.getFloat(attr, 0);
816                    break;
817
818                case com.android.internal.R.styleable.TextAppearance_shadowDy:
819                    dy = appearance.getFloat(attr, 0);
820                    break;
821
822                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
823                    r = appearance.getFloat(attr, 0);
824                    break;
825
826                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
827                    elegant = appearance.getBoolean(attr, false);
828                    break;
829
830                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
831                    letterSpacing = appearance.getFloat(attr, 0);
832                    break;
833
834                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
835                    fontFeatureSettings = appearance.getString(attr);
836                    break;
837                }
838            }
839
840            appearance.recycle();
841        }
842
843        boolean editable = getDefaultEditable();
844        CharSequence inputMethod = null;
845        int numeric = 0;
846        CharSequence digits = null;
847        boolean phone = false;
848        boolean autotext = false;
849        int autocap = -1;
850        int buffertype = 0;
851        boolean selectallonfocus = false;
852        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
853            drawableBottom = null, drawableStart = null, drawableEnd = null;
854        ColorStateList drawableTint = null;
855        PorterDuff.Mode drawableTintMode = null;
856        int drawablePadding = 0;
857        int ellipsize = -1;
858        boolean singleLine = false;
859        int maxlength = -1;
860        CharSequence text = "";
861        CharSequence hint = null;
862        boolean password = false;
863        int inputType = EditorInfo.TYPE_NULL;
864
865        a = theme.obtainStyledAttributes(
866                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
867
868        int n = a.getIndexCount();
869        for (int i = 0; i < n; i++) {
870            int attr = a.getIndex(i);
871
872            switch (attr) {
873            case com.android.internal.R.styleable.TextView_editable:
874                editable = a.getBoolean(attr, editable);
875                break;
876
877            case com.android.internal.R.styleable.TextView_inputMethod:
878                inputMethod = a.getText(attr);
879                break;
880
881            case com.android.internal.R.styleable.TextView_numeric:
882                numeric = a.getInt(attr, numeric);
883                break;
884
885            case com.android.internal.R.styleable.TextView_digits:
886                digits = a.getText(attr);
887                break;
888
889            case com.android.internal.R.styleable.TextView_phoneNumber:
890                phone = a.getBoolean(attr, phone);
891                break;
892
893            case com.android.internal.R.styleable.TextView_autoText:
894                autotext = a.getBoolean(attr, autotext);
895                break;
896
897            case com.android.internal.R.styleable.TextView_capitalize:
898                autocap = a.getInt(attr, autocap);
899                break;
900
901            case com.android.internal.R.styleable.TextView_bufferType:
902                buffertype = a.getInt(attr, buffertype);
903                break;
904
905            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
906                selectallonfocus = a.getBoolean(attr, selectallonfocus);
907                break;
908
909            case com.android.internal.R.styleable.TextView_autoLink:
910                mAutoLinkMask = a.getInt(attr, 0);
911                break;
912
913            case com.android.internal.R.styleable.TextView_linksClickable:
914                mLinksClickable = a.getBoolean(attr, true);
915                break;
916
917            case com.android.internal.R.styleable.TextView_drawableLeft:
918                drawableLeft = a.getDrawable(attr);
919                break;
920
921            case com.android.internal.R.styleable.TextView_drawableTop:
922                drawableTop = a.getDrawable(attr);
923                break;
924
925            case com.android.internal.R.styleable.TextView_drawableRight:
926                drawableRight = a.getDrawable(attr);
927                break;
928
929            case com.android.internal.R.styleable.TextView_drawableBottom:
930                drawableBottom = a.getDrawable(attr);
931                break;
932
933            case com.android.internal.R.styleable.TextView_drawableStart:
934                drawableStart = a.getDrawable(attr);
935                break;
936
937            case com.android.internal.R.styleable.TextView_drawableEnd:
938                drawableEnd = a.getDrawable(attr);
939                break;
940
941            case com.android.internal.R.styleable.TextView_drawableTint:
942                drawableTint = a.getColorStateList(attr);
943                break;
944
945            case com.android.internal.R.styleable.TextView_drawableTintMode:
946                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
947                break;
948
949            case com.android.internal.R.styleable.TextView_drawablePadding:
950                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
951                break;
952
953            case com.android.internal.R.styleable.TextView_maxLines:
954                setMaxLines(a.getInt(attr, -1));
955                break;
956
957            case com.android.internal.R.styleable.TextView_maxHeight:
958                setMaxHeight(a.getDimensionPixelSize(attr, -1));
959                break;
960
961            case com.android.internal.R.styleable.TextView_lines:
962                setLines(a.getInt(attr, -1));
963                break;
964
965            case com.android.internal.R.styleable.TextView_height:
966                setHeight(a.getDimensionPixelSize(attr, -1));
967                break;
968
969            case com.android.internal.R.styleable.TextView_minLines:
970                setMinLines(a.getInt(attr, -1));
971                break;
972
973            case com.android.internal.R.styleable.TextView_minHeight:
974                setMinHeight(a.getDimensionPixelSize(attr, -1));
975                break;
976
977            case com.android.internal.R.styleable.TextView_maxEms:
978                setMaxEms(a.getInt(attr, -1));
979                break;
980
981            case com.android.internal.R.styleable.TextView_maxWidth:
982                setMaxWidth(a.getDimensionPixelSize(attr, -1));
983                break;
984
985            case com.android.internal.R.styleable.TextView_ems:
986                setEms(a.getInt(attr, -1));
987                break;
988
989            case com.android.internal.R.styleable.TextView_width:
990                setWidth(a.getDimensionPixelSize(attr, -1));
991                break;
992
993            case com.android.internal.R.styleable.TextView_minEms:
994                setMinEms(a.getInt(attr, -1));
995                break;
996
997            case com.android.internal.R.styleable.TextView_minWidth:
998                setMinWidth(a.getDimensionPixelSize(attr, -1));
999                break;
1000
1001            case com.android.internal.R.styleable.TextView_gravity:
1002                setGravity(a.getInt(attr, -1));
1003                break;
1004
1005            case com.android.internal.R.styleable.TextView_hint:
1006                hint = a.getText(attr);
1007                break;
1008
1009            case com.android.internal.R.styleable.TextView_text:
1010                text = a.getText(attr);
1011                break;
1012
1013            case com.android.internal.R.styleable.TextView_scrollHorizontally:
1014                if (a.getBoolean(attr, false)) {
1015                    setHorizontallyScrolling(true);
1016                }
1017                break;
1018
1019            case com.android.internal.R.styleable.TextView_singleLine:
1020                singleLine = a.getBoolean(attr, singleLine);
1021                break;
1022
1023            case com.android.internal.R.styleable.TextView_ellipsize:
1024                ellipsize = a.getInt(attr, ellipsize);
1025                break;
1026
1027            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1028                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1029                break;
1030
1031            case com.android.internal.R.styleable.TextView_includeFontPadding:
1032                if (!a.getBoolean(attr, true)) {
1033                    setIncludeFontPadding(false);
1034                }
1035                break;
1036
1037            case com.android.internal.R.styleable.TextView_cursorVisible:
1038                if (!a.getBoolean(attr, true)) {
1039                    setCursorVisible(false);
1040                }
1041                break;
1042
1043            case com.android.internal.R.styleable.TextView_maxLength:
1044                maxlength = a.getInt(attr, -1);
1045                break;
1046
1047            case com.android.internal.R.styleable.TextView_textScaleX:
1048                setTextScaleX(a.getFloat(attr, 1.0f));
1049                break;
1050
1051            case com.android.internal.R.styleable.TextView_freezesText:
1052                mFreezesText = a.getBoolean(attr, false);
1053                break;
1054
1055            case com.android.internal.R.styleable.TextView_shadowColor:
1056                shadowcolor = a.getInt(attr, 0);
1057                break;
1058
1059            case com.android.internal.R.styleable.TextView_shadowDx:
1060                dx = a.getFloat(attr, 0);
1061                break;
1062
1063            case com.android.internal.R.styleable.TextView_shadowDy:
1064                dy = a.getFloat(attr, 0);
1065                break;
1066
1067            case com.android.internal.R.styleable.TextView_shadowRadius:
1068                r = a.getFloat(attr, 0);
1069                break;
1070
1071            case com.android.internal.R.styleable.TextView_enabled:
1072                setEnabled(a.getBoolean(attr, isEnabled()));
1073                break;
1074
1075            case com.android.internal.R.styleable.TextView_textColorHighlight:
1076                textColorHighlight = a.getColor(attr, textColorHighlight);
1077                break;
1078
1079            case com.android.internal.R.styleable.TextView_textColor:
1080                textColor = a.getColorStateList(attr);
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_textColorHint:
1084                textColorHint = a.getColorStateList(attr);
1085                break;
1086
1087            case com.android.internal.R.styleable.TextView_textColorLink:
1088                textColorLink = a.getColorStateList(attr);
1089                break;
1090
1091            case com.android.internal.R.styleable.TextView_textSize:
1092                textSize = a.getDimensionPixelSize(attr, textSize);
1093                break;
1094
1095            case com.android.internal.R.styleable.TextView_typeface:
1096                typefaceIndex = a.getInt(attr, typefaceIndex);
1097                break;
1098
1099            case com.android.internal.R.styleable.TextView_textStyle:
1100                styleIndex = a.getInt(attr, styleIndex);
1101                break;
1102
1103            case com.android.internal.R.styleable.TextView_fontFamily:
1104                fontFamily = a.getString(attr);
1105                fontFamilyExplicit = true;
1106                break;
1107
1108            case com.android.internal.R.styleable.TextView_password:
1109                password = a.getBoolean(attr, password);
1110                break;
1111
1112            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1113                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1114                break;
1115
1116            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1117                mSpacingMult = a.getFloat(attr, mSpacingMult);
1118                break;
1119
1120            case com.android.internal.R.styleable.TextView_inputType:
1121                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1122                break;
1123
1124            case com.android.internal.R.styleable.TextView_allowUndo:
1125                createEditorIfNeeded();
1126                mEditor.mAllowUndo = a.getBoolean(attr, true);
1127                break;
1128
1129            case com.android.internal.R.styleable.TextView_imeOptions:
1130                createEditorIfNeeded();
1131                mEditor.createInputContentTypeIfNeeded();
1132                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1133                        mEditor.mInputContentType.imeOptions);
1134                break;
1135
1136            case com.android.internal.R.styleable.TextView_imeActionLabel:
1137                createEditorIfNeeded();
1138                mEditor.createInputContentTypeIfNeeded();
1139                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1140                break;
1141
1142            case com.android.internal.R.styleable.TextView_imeActionId:
1143                createEditorIfNeeded();
1144                mEditor.createInputContentTypeIfNeeded();
1145                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1146                        mEditor.mInputContentType.imeActionId);
1147                break;
1148
1149            case com.android.internal.R.styleable.TextView_privateImeOptions:
1150                setPrivateImeOptions(a.getString(attr));
1151                break;
1152
1153            case com.android.internal.R.styleable.TextView_editorExtras:
1154                try {
1155                    setInputExtras(a.getResourceId(attr, 0));
1156                } catch (XmlPullParserException e) {
1157                    Log.w(LOG_TAG, "Failure reading input extras", e);
1158                } catch (IOException e) {
1159                    Log.w(LOG_TAG, "Failure reading input extras", e);
1160                }
1161                break;
1162
1163            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1164                mCursorDrawableRes = a.getResourceId(attr, 0);
1165                break;
1166
1167            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1168                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1169                break;
1170
1171            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1172                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1173                break;
1174
1175            case com.android.internal.R.styleable.TextView_textSelectHandle:
1176                mTextSelectHandleRes = a.getResourceId(attr, 0);
1177                break;
1178
1179            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1180                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1181                break;
1182
1183            case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1184                mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1185                break;
1186
1187            case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1188                mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1189                break;
1190
1191            case com.android.internal.R.styleable.TextView_textIsSelectable:
1192                setTextIsSelectable(a.getBoolean(attr, false));
1193                break;
1194
1195            case com.android.internal.R.styleable.TextView_textAllCaps:
1196                allCaps = a.getBoolean(attr, false);
1197                break;
1198
1199            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1200                elegant = a.getBoolean(attr, false);
1201                break;
1202
1203            case com.android.internal.R.styleable.TextView_letterSpacing:
1204                letterSpacing = a.getFloat(attr, 0);
1205                break;
1206
1207            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1208                fontFeatureSettings = a.getString(attr);
1209                break;
1210
1211            case com.android.internal.R.styleable.TextView_breakStrategy:
1212                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1213                break;
1214
1215            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1216                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1217                break;
1218            }
1219        }
1220        a.recycle();
1221
1222        BufferType bufferType = BufferType.EDITABLE;
1223
1224        final int variation =
1225                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1226        final boolean passwordInputType = variation
1227                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1228        final boolean webPasswordInputType = variation
1229                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1230        final boolean numberPasswordInputType = variation
1231                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1232
1233        if (inputMethod != null) {
1234            Class<?> c;
1235
1236            try {
1237                c = Class.forName(inputMethod.toString());
1238            } catch (ClassNotFoundException ex) {
1239                throw new RuntimeException(ex);
1240            }
1241
1242            try {
1243                createEditorIfNeeded();
1244                mEditor.mKeyListener = (KeyListener) c.newInstance();
1245            } catch (InstantiationException ex) {
1246                throw new RuntimeException(ex);
1247            } catch (IllegalAccessException ex) {
1248                throw new RuntimeException(ex);
1249            }
1250            try {
1251                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1252                        ? inputType
1253                        : mEditor.mKeyListener.getInputType();
1254            } catch (IncompatibleClassChangeError e) {
1255                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1256            }
1257        } else if (digits != null) {
1258            createEditorIfNeeded();
1259            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1260            // If no input type was specified, we will default to generic
1261            // text, since we can't tell the IME about the set of digits
1262            // that was selected.
1263            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1264                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1265        } else if (inputType != EditorInfo.TYPE_NULL) {
1266            setInputType(inputType, true);
1267            // If set, the input type overrides what was set using the deprecated singleLine flag.
1268            singleLine = !isMultilineInputType(inputType);
1269        } else if (phone) {
1270            createEditorIfNeeded();
1271            mEditor.mKeyListener = DialerKeyListener.getInstance();
1272            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1273        } else if (numeric != 0) {
1274            createEditorIfNeeded();
1275            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1276                                                   (numeric & DECIMAL) != 0);
1277            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1278            if ((numeric & SIGNED) != 0) {
1279                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1280            }
1281            if ((numeric & DECIMAL) != 0) {
1282                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1283            }
1284            mEditor.mInputType = inputType;
1285        } else if (autotext || autocap != -1) {
1286            TextKeyListener.Capitalize cap;
1287
1288            inputType = EditorInfo.TYPE_CLASS_TEXT;
1289
1290            switch (autocap) {
1291            case 1:
1292                cap = TextKeyListener.Capitalize.SENTENCES;
1293                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1294                break;
1295
1296            case 2:
1297                cap = TextKeyListener.Capitalize.WORDS;
1298                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1299                break;
1300
1301            case 3:
1302                cap = TextKeyListener.Capitalize.CHARACTERS;
1303                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1304                break;
1305
1306            default:
1307                cap = TextKeyListener.Capitalize.NONE;
1308                break;
1309            }
1310
1311            createEditorIfNeeded();
1312            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1313            mEditor.mInputType = inputType;
1314        } else if (isTextSelectable()) {
1315            // Prevent text changes from keyboard.
1316            if (mEditor != null) {
1317                mEditor.mKeyListener = null;
1318                mEditor.mInputType = EditorInfo.TYPE_NULL;
1319            }
1320            bufferType = BufferType.SPANNABLE;
1321            // So that selection can be changed using arrow keys and touch is handled.
1322            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1323        } else if (editable) {
1324            createEditorIfNeeded();
1325            mEditor.mKeyListener = TextKeyListener.getInstance();
1326            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1327        } else {
1328            if (mEditor != null) mEditor.mKeyListener = null;
1329
1330            switch (buffertype) {
1331                case 0:
1332                    bufferType = BufferType.NORMAL;
1333                    break;
1334                case 1:
1335                    bufferType = BufferType.SPANNABLE;
1336                    break;
1337                case 2:
1338                    bufferType = BufferType.EDITABLE;
1339                    break;
1340            }
1341        }
1342
1343        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1344                webPasswordInputType, numberPasswordInputType);
1345
1346        if (selectallonfocus) {
1347            createEditorIfNeeded();
1348            mEditor.mSelectAllOnFocus = true;
1349
1350            if (bufferType == BufferType.NORMAL)
1351                bufferType = BufferType.SPANNABLE;
1352        }
1353
1354        // Set up the tint (if needed) before setting the drawables so that it
1355        // gets applied correctly.
1356        if (drawableTint != null || drawableTintMode != null) {
1357            if (mDrawables == null) {
1358                mDrawables = new Drawables(context);
1359            }
1360            if (drawableTint != null) {
1361                mDrawables.mTintList = drawableTint;
1362                mDrawables.mHasTint = true;
1363            }
1364            if (drawableTintMode != null) {
1365                mDrawables.mTintMode = drawableTintMode;
1366                mDrawables.mHasTintMode = true;
1367            }
1368        }
1369
1370        // This call will save the initial left/right drawables
1371        setCompoundDrawablesWithIntrinsicBounds(
1372            drawableLeft, drawableTop, drawableRight, drawableBottom);
1373        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1374        setCompoundDrawablePadding(drawablePadding);
1375
1376        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1377        // of lines of height are unchanged for multi-line TextViews.
1378        setInputTypeSingleLine(singleLine);
1379        applySingleLine(singleLine, singleLine, singleLine);
1380
1381        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1382                ellipsize = 3; // END
1383        }
1384
1385        switch (ellipsize) {
1386            case 1:
1387                setEllipsize(TextUtils.TruncateAt.START);
1388                break;
1389            case 2:
1390                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1391                break;
1392            case 3:
1393                setEllipsize(TextUtils.TruncateAt.END);
1394                break;
1395            case 4:
1396                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1397                    setHorizontalFadingEdgeEnabled(true);
1398                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1399                } else {
1400                    setHorizontalFadingEdgeEnabled(false);
1401                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1402                }
1403                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1404                break;
1405        }
1406
1407        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1408        setHintTextColor(textColorHint);
1409        setLinkTextColor(textColorLink);
1410        if (textColorHighlight != 0) {
1411            setHighlightColor(textColorHighlight);
1412        }
1413        setRawTextSize(textSize);
1414        setElegantTextHeight(elegant);
1415        setLetterSpacing(letterSpacing);
1416        setFontFeatureSettings(fontFeatureSettings);
1417
1418        if (allCaps) {
1419            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1420        }
1421
1422        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1423            setTransformationMethod(PasswordTransformationMethod.getInstance());
1424            typefaceIndex = MONOSPACE;
1425        } else if (mEditor != null &&
1426                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1427                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1428            typefaceIndex = MONOSPACE;
1429        }
1430
1431        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1432            fontFamily = null;
1433        }
1434        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1435
1436        if (shadowcolor != 0) {
1437            setShadowLayer(r, dx, dy, shadowcolor);
1438        }
1439
1440        if (maxlength >= 0) {
1441            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1442        } else {
1443            setFilters(NO_FILTERS);
1444        }
1445
1446        setText(text, bufferType);
1447        if (hint != null) setHint(hint);
1448
1449        /*
1450         * Views are not normally focusable unless specified to be.
1451         * However, TextViews that have input or movement methods *are*
1452         * focusable by default.
1453         */
1454        a = context.obtainStyledAttributes(
1455                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1456
1457        boolean focusable = mMovement != null || getKeyListener() != null;
1458        boolean clickable = focusable || isClickable();
1459        boolean longClickable = focusable || isLongClickable();
1460
1461        n = a.getIndexCount();
1462        for (int i = 0; i < n; i++) {
1463            int attr = a.getIndex(i);
1464
1465            switch (attr) {
1466            case com.android.internal.R.styleable.View_focusable:
1467                focusable = a.getBoolean(attr, focusable);
1468                break;
1469
1470            case com.android.internal.R.styleable.View_clickable:
1471                clickable = a.getBoolean(attr, clickable);
1472                break;
1473
1474            case com.android.internal.R.styleable.View_longClickable:
1475                longClickable = a.getBoolean(attr, longClickable);
1476                break;
1477            }
1478        }
1479        a.recycle();
1480
1481        setFocusable(focusable);
1482        setClickable(clickable);
1483        setLongClickable(longClickable);
1484
1485        if (mEditor != null) mEditor.prepareCursorControllers();
1486
1487        // If not explicitly specified this view is important for accessibility.
1488        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1489            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1490        }
1491    }
1492
1493    private int[] parseDimensionArray(TypedArray dimens) {
1494        if (dimens == null) {
1495            return null;
1496        }
1497        int[] result = new int[dimens.length()];
1498        for (int i = 0; i < result.length; i++) {
1499            result[i] = dimens.getDimensionPixelSize(i, 0);
1500        }
1501        return result;
1502    }
1503
1504    /**
1505     * @hide
1506     */
1507    @Override
1508    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1509        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1510            if (resultCode == Activity.RESULT_OK && data != null) {
1511                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1512                if (result != null) {
1513                    if (isTextEditable()) {
1514                        replaceSelectionWithText(result);
1515                        if (mEditor != null) {
1516                            mEditor.refreshTextActionMode();
1517                        }
1518                    } else {
1519                        if (result.length() > 0) {
1520                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1521                                .show();
1522                        }
1523                    }
1524                }
1525            } else if (mText instanceof Spannable) {
1526                // Reset the selection.
1527                Selection.setSelection((Spannable) mText, getSelectionEnd());
1528            }
1529        }
1530    }
1531
1532    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1533        Typeface tf = null;
1534        if (familyName != null) {
1535            tf = Typeface.create(familyName, styleIndex);
1536            if (tf != null) {
1537                setTypeface(tf);
1538                return;
1539            }
1540        }
1541        switch (typefaceIndex) {
1542            case SANS:
1543                tf = Typeface.SANS_SERIF;
1544                break;
1545
1546            case SERIF:
1547                tf = Typeface.SERIF;
1548                break;
1549
1550            case MONOSPACE:
1551                tf = Typeface.MONOSPACE;
1552                break;
1553        }
1554
1555        setTypeface(tf, styleIndex);
1556    }
1557
1558    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1559        boolean hasRelativeDrawables = (start != null) || (end != null);
1560        if (hasRelativeDrawables) {
1561            Drawables dr = mDrawables;
1562            if (dr == null) {
1563                mDrawables = dr = new Drawables(getContext());
1564            }
1565            mDrawables.mOverride = true;
1566            final Rect compoundRect = dr.mCompoundRect;
1567            int[] state = getDrawableState();
1568            if (start != null) {
1569                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1570                start.setState(state);
1571                start.copyBounds(compoundRect);
1572                start.setCallback(this);
1573
1574                dr.mDrawableStart = start;
1575                dr.mDrawableSizeStart = compoundRect.width();
1576                dr.mDrawableHeightStart = compoundRect.height();
1577            } else {
1578                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1579            }
1580            if (end != null) {
1581                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1582                end.setState(state);
1583                end.copyBounds(compoundRect);
1584                end.setCallback(this);
1585
1586                dr.mDrawableEnd = end;
1587                dr.mDrawableSizeEnd = compoundRect.width();
1588                dr.mDrawableHeightEnd = compoundRect.height();
1589            } else {
1590                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1591            }
1592            resetResolvedDrawables();
1593            resolveDrawables();
1594            applyCompoundDrawableTint();
1595        }
1596    }
1597
1598    @Override
1599    public void setEnabled(boolean enabled) {
1600        if (enabled == isEnabled()) {
1601            return;
1602        }
1603
1604        if (!enabled) {
1605            // Hide the soft input if the currently active TextView is disabled
1606            InputMethodManager imm = InputMethodManager.peekInstance();
1607            if (imm != null && imm.isActive(this)) {
1608                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1609            }
1610        }
1611
1612        super.setEnabled(enabled);
1613
1614        if (enabled) {
1615            // Make sure IME is updated with current editor info.
1616            InputMethodManager imm = InputMethodManager.peekInstance();
1617            if (imm != null) imm.restartInput(this);
1618        }
1619
1620        // Will change text color
1621        if (mEditor != null) {
1622            mEditor.invalidateTextDisplayList();
1623            mEditor.prepareCursorControllers();
1624
1625            // start or stop the cursor blinking as appropriate
1626            mEditor.makeBlink();
1627        }
1628    }
1629
1630    /**
1631     * Sets the typeface and style in which the text should be displayed,
1632     * and turns on the fake bold and italic bits in the Paint if the
1633     * Typeface that you provided does not have all the bits in the
1634     * style that you specified.
1635     *
1636     * @attr ref android.R.styleable#TextView_typeface
1637     * @attr ref android.R.styleable#TextView_textStyle
1638     */
1639    public void setTypeface(Typeface tf, int style) {
1640        if (style > 0) {
1641            if (tf == null) {
1642                tf = Typeface.defaultFromStyle(style);
1643            } else {
1644                tf = Typeface.create(tf, style);
1645            }
1646
1647            setTypeface(tf);
1648            // now compute what (if any) algorithmic styling is needed
1649            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1650            int need = style & ~typefaceStyle;
1651            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1652            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1653        } else {
1654            mTextPaint.setFakeBoldText(false);
1655            mTextPaint.setTextSkewX(0);
1656            setTypeface(tf);
1657        }
1658    }
1659
1660    /**
1661     * Subclasses override this to specify that they have a KeyListener
1662     * by default even if not specifically called for in the XML options.
1663     */
1664    protected boolean getDefaultEditable() {
1665        return false;
1666    }
1667
1668    /**
1669     * Subclasses override this to specify a default movement method.
1670     */
1671    protected MovementMethod getDefaultMovementMethod() {
1672        return null;
1673    }
1674
1675    /**
1676     * Return the text the TextView is displaying. If setText() was called with
1677     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1678     * the return value from this method to Spannable or Editable, respectively.
1679     *
1680     * Note: The content of the return value should not be modified. If you want
1681     * a modifiable one, you should make your own copy first.
1682     *
1683     * @attr ref android.R.styleable#TextView_text
1684     */
1685    @ViewDebug.CapturedViewProperty
1686    public CharSequence getText() {
1687        return mText;
1688    }
1689
1690    /**
1691     * Returns the length, in characters, of the text managed by this TextView
1692     */
1693    public int length() {
1694        return mText.length();
1695    }
1696
1697    /**
1698     * Return the text the TextView is displaying as an Editable object.  If
1699     * the text is not editable, null is returned.
1700     *
1701     * @see #getText
1702     */
1703    public Editable getEditableText() {
1704        return (mText instanceof Editable) ? (Editable)mText : null;
1705    }
1706
1707    /**
1708     * @return the height of one standard line in pixels.  Note that markup
1709     * within the text can cause individual lines to be taller or shorter
1710     * than this height, and the layout may contain additional first-
1711     * or last-line padding.
1712     */
1713    public int getLineHeight() {
1714        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1715    }
1716
1717    /**
1718     * @return the Layout that is currently being used to display the text.
1719     * This can be null if the text or width has recently changes.
1720     */
1721    public final Layout getLayout() {
1722        return mLayout;
1723    }
1724
1725    /**
1726     * @return the Layout that is currently being used to display the hint text.
1727     * This can be null.
1728     */
1729    final Layout getHintLayout() {
1730        return mHintLayout;
1731    }
1732
1733    /**
1734     * Retrieve the {@link android.content.UndoManager} that is currently associated
1735     * with this TextView.  By default there is no associated UndoManager, so null
1736     * is returned.  One can be associated with the TextView through
1737     * {@link #setUndoManager(android.content.UndoManager, String)}
1738     *
1739     * @hide
1740     */
1741    public final UndoManager getUndoManager() {
1742        // TODO: Consider supporting a global undo manager.
1743        throw new UnsupportedOperationException("not implemented");
1744    }
1745
1746
1747    /**
1748     * @hide
1749     */
1750    @VisibleForTesting
1751    public final Editor getEditorForTesting() {
1752        return mEditor;
1753    }
1754
1755    /**
1756     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1757     * done, all edit operations on the TextView will result in appropriate
1758     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1759     * stack.
1760     *
1761     * @param undoManager The {@link android.content.UndoManager} to associate with
1762     * this TextView, or null to clear any existing association.
1763     * @param tag String tag identifying this particular TextView owner in the
1764     * UndoManager.  This is used to keep the correct association with the
1765     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1766     *
1767     * @hide
1768     */
1769    public final void setUndoManager(UndoManager undoManager, String tag) {
1770        // TODO: Consider supporting a global undo manager. An implementation will need to:
1771        // * createEditorIfNeeded()
1772        // * Promote to BufferType.EDITABLE if needed.
1773        // * Update the UndoManager and UndoOwner.
1774        // Likewise it will need to be able to restore the default UndoManager.
1775        throw new UnsupportedOperationException("not implemented");
1776    }
1777
1778    /**
1779     * @return the current key listener for this TextView.
1780     * This will frequently be null for non-EditText TextViews.
1781     *
1782     * @attr ref android.R.styleable#TextView_numeric
1783     * @attr ref android.R.styleable#TextView_digits
1784     * @attr ref android.R.styleable#TextView_phoneNumber
1785     * @attr ref android.R.styleable#TextView_inputMethod
1786     * @attr ref android.R.styleable#TextView_capitalize
1787     * @attr ref android.R.styleable#TextView_autoText
1788     */
1789    public final KeyListener getKeyListener() {
1790        return mEditor == null ? null : mEditor.mKeyListener;
1791    }
1792
1793    /**
1794     * Sets the key listener to be used with this TextView.  This can be null
1795     * to disallow user input.  Note that this method has significant and
1796     * subtle interactions with soft keyboards and other input method:
1797     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1798     * for important details.  Calling this method will replace the current
1799     * content type of the text view with the content type returned by the
1800     * key listener.
1801     * <p>
1802     * Be warned that if you want a TextView with a key listener or movement
1803     * method not to be focusable, or if you want a TextView without a
1804     * key listener or movement method to be focusable, you must call
1805     * {@link #setFocusable} again after calling this to get the focusability
1806     * back the way you want it.
1807     *
1808     * @attr ref android.R.styleable#TextView_numeric
1809     * @attr ref android.R.styleable#TextView_digits
1810     * @attr ref android.R.styleable#TextView_phoneNumber
1811     * @attr ref android.R.styleable#TextView_inputMethod
1812     * @attr ref android.R.styleable#TextView_capitalize
1813     * @attr ref android.R.styleable#TextView_autoText
1814     */
1815    public void setKeyListener(KeyListener input) {
1816        setKeyListenerOnly(input);
1817        fixFocusableAndClickableSettings();
1818
1819        if (input != null) {
1820            createEditorIfNeeded();
1821            try {
1822                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1823            } catch (IncompatibleClassChangeError e) {
1824                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1825            }
1826            // Change inputType, without affecting transformation.
1827            // No need to applySingleLine since mSingleLine is unchanged.
1828            setInputTypeSingleLine(mSingleLine);
1829        } else {
1830            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1831        }
1832
1833        InputMethodManager imm = InputMethodManager.peekInstance();
1834        if (imm != null) imm.restartInput(this);
1835    }
1836
1837    private void setKeyListenerOnly(KeyListener input) {
1838        if (mEditor == null && input == null) return; // null is the default value
1839
1840        createEditorIfNeeded();
1841        if (mEditor.mKeyListener != input) {
1842            mEditor.mKeyListener = input;
1843            if (input != null && !(mText instanceof Editable)) {
1844                setText(mText);
1845            }
1846
1847            setFilters((Editable) mText, mFilters);
1848        }
1849    }
1850
1851    /**
1852     * @return the movement method being used for this TextView.
1853     * This will frequently be null for non-EditText TextViews.
1854     */
1855    public final MovementMethod getMovementMethod() {
1856        return mMovement;
1857    }
1858
1859    /**
1860     * Sets the movement method (arrow key handler) to be used for
1861     * this TextView.  This can be null to disallow using the arrow keys
1862     * to move the cursor or scroll the view.
1863     * <p>
1864     * Be warned that if you want a TextView with a key listener or movement
1865     * method not to be focusable, or if you want a TextView without a
1866     * key listener or movement method to be focusable, you must call
1867     * {@link #setFocusable} again after calling this to get the focusability
1868     * back the way you want it.
1869     */
1870    public final void setMovementMethod(MovementMethod movement) {
1871        if (mMovement != movement) {
1872            mMovement = movement;
1873
1874            if (movement != null && !(mText instanceof Spannable)) {
1875                setText(mText);
1876            }
1877
1878            fixFocusableAndClickableSettings();
1879
1880            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1881            // mMovement
1882            if (mEditor != null) mEditor.prepareCursorControllers();
1883        }
1884    }
1885
1886    private void fixFocusableAndClickableSettings() {
1887        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1888            setFocusable(true);
1889            setClickable(true);
1890            setLongClickable(true);
1891        } else {
1892            setFocusable(false);
1893            setClickable(false);
1894            setLongClickable(false);
1895        }
1896    }
1897
1898    /**
1899     * @return the current transformation method for this TextView.
1900     * This will frequently be null except for single-line and password
1901     * fields.
1902     *
1903     * @attr ref android.R.styleable#TextView_password
1904     * @attr ref android.R.styleable#TextView_singleLine
1905     */
1906    public final TransformationMethod getTransformationMethod() {
1907        return mTransformation;
1908    }
1909
1910    /**
1911     * Sets the transformation that is applied to the text that this
1912     * TextView is displaying.
1913     *
1914     * @attr ref android.R.styleable#TextView_password
1915     * @attr ref android.R.styleable#TextView_singleLine
1916     */
1917    public final void setTransformationMethod(TransformationMethod method) {
1918        if (method == mTransformation) {
1919            // Avoid the setText() below if the transformation is
1920            // the same.
1921            return;
1922        }
1923        if (mTransformation != null) {
1924            if (mText instanceof Spannable) {
1925                ((Spannable) mText).removeSpan(mTransformation);
1926            }
1927        }
1928
1929        mTransformation = method;
1930
1931        if (method instanceof TransformationMethod2) {
1932            TransformationMethod2 method2 = (TransformationMethod2) method;
1933            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1934            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1935        } else {
1936            mAllowTransformationLengthChange = false;
1937        }
1938
1939        setText(mText);
1940
1941        if (hasPasswordTransformationMethod()) {
1942            notifyViewAccessibilityStateChangedIfNeeded(
1943                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1944        }
1945    }
1946
1947    /**
1948     * Returns the top padding of the view, plus space for the top
1949     * Drawable if any.
1950     */
1951    public int getCompoundPaddingTop() {
1952        final Drawables dr = mDrawables;
1953        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1954            return mPaddingTop;
1955        } else {
1956            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1957        }
1958    }
1959
1960    /**
1961     * Returns the bottom padding of the view, plus space for the bottom
1962     * Drawable if any.
1963     */
1964    public int getCompoundPaddingBottom() {
1965        final Drawables dr = mDrawables;
1966        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1967            return mPaddingBottom;
1968        } else {
1969            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1970        }
1971    }
1972
1973    /**
1974     * Returns the left padding of the view, plus space for the left
1975     * Drawable if any.
1976     */
1977    public int getCompoundPaddingLeft() {
1978        final Drawables dr = mDrawables;
1979        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1980            return mPaddingLeft;
1981        } else {
1982            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1983        }
1984    }
1985
1986    /**
1987     * Returns the right padding of the view, plus space for the right
1988     * Drawable if any.
1989     */
1990    public int getCompoundPaddingRight() {
1991        final Drawables dr = mDrawables;
1992        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1993            return mPaddingRight;
1994        } else {
1995            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1996        }
1997    }
1998
1999    /**
2000     * Returns the start padding of the view, plus space for the start
2001     * Drawable if any.
2002     */
2003    public int getCompoundPaddingStart() {
2004        resolveDrawables();
2005        switch(getLayoutDirection()) {
2006            default:
2007            case LAYOUT_DIRECTION_LTR:
2008                return getCompoundPaddingLeft();
2009            case LAYOUT_DIRECTION_RTL:
2010                return getCompoundPaddingRight();
2011        }
2012    }
2013
2014    /**
2015     * Returns the end padding of the view, plus space for the end
2016     * Drawable if any.
2017     */
2018    public int getCompoundPaddingEnd() {
2019        resolveDrawables();
2020        switch(getLayoutDirection()) {
2021            default:
2022            case LAYOUT_DIRECTION_LTR:
2023                return getCompoundPaddingRight();
2024            case LAYOUT_DIRECTION_RTL:
2025                return getCompoundPaddingLeft();
2026        }
2027    }
2028
2029    /**
2030     * Returns the extended top padding of the view, including both the
2031     * top Drawable if any and any extra space to keep more than maxLines
2032     * of text from showing.  It is only valid to call this after measuring.
2033     */
2034    public int getExtendedPaddingTop() {
2035        if (mMaxMode != LINES) {
2036            return getCompoundPaddingTop();
2037        }
2038
2039        if (mLayout == null) {
2040            assumeLayout();
2041        }
2042
2043        if (mLayout.getLineCount() <= mMaximum) {
2044            return getCompoundPaddingTop();
2045        }
2046
2047        int top = getCompoundPaddingTop();
2048        int bottom = getCompoundPaddingBottom();
2049        int viewht = getHeight() - top - bottom;
2050        int layoutht = mLayout.getLineTop(mMaximum);
2051
2052        if (layoutht >= viewht) {
2053            return top;
2054        }
2055
2056        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2057        if (gravity == Gravity.TOP) {
2058            return top;
2059        } else if (gravity == Gravity.BOTTOM) {
2060            return top + viewht - layoutht;
2061        } else { // (gravity == Gravity.CENTER_VERTICAL)
2062            return top + (viewht - layoutht) / 2;
2063        }
2064    }
2065
2066    /**
2067     * Returns the extended bottom padding of the view, including both the
2068     * bottom Drawable if any and any extra space to keep more than maxLines
2069     * of text from showing.  It is only valid to call this after measuring.
2070     */
2071    public int getExtendedPaddingBottom() {
2072        if (mMaxMode != LINES) {
2073            return getCompoundPaddingBottom();
2074        }
2075
2076        if (mLayout == null) {
2077            assumeLayout();
2078        }
2079
2080        if (mLayout.getLineCount() <= mMaximum) {
2081            return getCompoundPaddingBottom();
2082        }
2083
2084        int top = getCompoundPaddingTop();
2085        int bottom = getCompoundPaddingBottom();
2086        int viewht = getHeight() - top - bottom;
2087        int layoutht = mLayout.getLineTop(mMaximum);
2088
2089        if (layoutht >= viewht) {
2090            return bottom;
2091        }
2092
2093        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2094        if (gravity == Gravity.TOP) {
2095            return bottom + viewht - layoutht;
2096        } else if (gravity == Gravity.BOTTOM) {
2097            return bottom;
2098        } else { // (gravity == Gravity.CENTER_VERTICAL)
2099            return bottom + (viewht - layoutht) / 2;
2100        }
2101    }
2102
2103    /**
2104     * Returns the total left padding of the view, including the left
2105     * Drawable if any.
2106     */
2107    public int getTotalPaddingLeft() {
2108        return getCompoundPaddingLeft();
2109    }
2110
2111    /**
2112     * Returns the total right padding of the view, including the right
2113     * Drawable if any.
2114     */
2115    public int getTotalPaddingRight() {
2116        return getCompoundPaddingRight();
2117    }
2118
2119    /**
2120     * Returns the total start padding of the view, including the start
2121     * Drawable if any.
2122     */
2123    public int getTotalPaddingStart() {
2124        return getCompoundPaddingStart();
2125    }
2126
2127    /**
2128     * Returns the total end padding of the view, including the end
2129     * Drawable if any.
2130     */
2131    public int getTotalPaddingEnd() {
2132        return getCompoundPaddingEnd();
2133    }
2134
2135    /**
2136     * Returns the total top padding of the view, including the top
2137     * Drawable if any, the extra space to keep more than maxLines
2138     * from showing, and the vertical offset for gravity, if any.
2139     */
2140    public int getTotalPaddingTop() {
2141        return getExtendedPaddingTop() + getVerticalOffset(true);
2142    }
2143
2144    /**
2145     * Returns the total bottom padding of the view, including the bottom
2146     * Drawable if any, the extra space to keep more than maxLines
2147     * from showing, and the vertical offset for gravity, if any.
2148     */
2149    public int getTotalPaddingBottom() {
2150        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2151    }
2152
2153    /**
2154     * Sets the Drawables (if any) to appear to the left of, above, to the
2155     * right of, and below the text. Use {@code null} if you do not want a
2156     * Drawable there. The Drawables must already have had
2157     * {@link Drawable#setBounds} called.
2158     * <p>
2159     * Calling this method will overwrite any Drawables previously set using
2160     * {@link #setCompoundDrawablesRelative} or related methods.
2161     *
2162     * @attr ref android.R.styleable#TextView_drawableLeft
2163     * @attr ref android.R.styleable#TextView_drawableTop
2164     * @attr ref android.R.styleable#TextView_drawableRight
2165     * @attr ref android.R.styleable#TextView_drawableBottom
2166     */
2167    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2168            @Nullable Drawable right, @Nullable Drawable bottom) {
2169        Drawables dr = mDrawables;
2170
2171        // We're switching to absolute, discard relative.
2172        if (dr != null) {
2173            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2174            dr.mDrawableStart = null;
2175            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2176            dr.mDrawableEnd = null;
2177            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2178            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2179        }
2180
2181        final boolean drawables = left != null || top != null || right != null || bottom != null;
2182        if (!drawables) {
2183            // Clearing drawables...  can we free the data structure?
2184            if (dr != null) {
2185                if (!dr.hasMetadata()) {
2186                    mDrawables = null;
2187                } else {
2188                    // We need to retain the last set padding, so just clear
2189                    // out all of the fields in the existing structure.
2190                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2191                        if (dr.mShowing[i] != null) {
2192                            dr.mShowing[i].setCallback(null);
2193                        }
2194                        dr.mShowing[i] = null;
2195                    }
2196                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2197                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2198                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2199                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2200                }
2201            }
2202        } else {
2203            if (dr == null) {
2204                mDrawables = dr = new Drawables(getContext());
2205            }
2206
2207            mDrawables.mOverride = false;
2208
2209            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2210                dr.mShowing[Drawables.LEFT].setCallback(null);
2211            }
2212            dr.mShowing[Drawables.LEFT] = left;
2213
2214            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2215                dr.mShowing[Drawables.TOP].setCallback(null);
2216            }
2217            dr.mShowing[Drawables.TOP] = top;
2218
2219            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2220                dr.mShowing[Drawables.RIGHT].setCallback(null);
2221            }
2222            dr.mShowing[Drawables.RIGHT] = right;
2223
2224            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2225                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2226            }
2227            dr.mShowing[Drawables.BOTTOM] = bottom;
2228
2229            final Rect compoundRect = dr.mCompoundRect;
2230            int[] state;
2231
2232            state = getDrawableState();
2233
2234            if (left != null) {
2235                left.setState(state);
2236                left.copyBounds(compoundRect);
2237                left.setCallback(this);
2238                dr.mDrawableSizeLeft = compoundRect.width();
2239                dr.mDrawableHeightLeft = compoundRect.height();
2240            } else {
2241                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2242            }
2243
2244            if (right != null) {
2245                right.setState(state);
2246                right.copyBounds(compoundRect);
2247                right.setCallback(this);
2248                dr.mDrawableSizeRight = compoundRect.width();
2249                dr.mDrawableHeightRight = compoundRect.height();
2250            } else {
2251                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2252            }
2253
2254            if (top != null) {
2255                top.setState(state);
2256                top.copyBounds(compoundRect);
2257                top.setCallback(this);
2258                dr.mDrawableSizeTop = compoundRect.height();
2259                dr.mDrawableWidthTop = compoundRect.width();
2260            } else {
2261                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2262            }
2263
2264            if (bottom != null) {
2265                bottom.setState(state);
2266                bottom.copyBounds(compoundRect);
2267                bottom.setCallback(this);
2268                dr.mDrawableSizeBottom = compoundRect.height();
2269                dr.mDrawableWidthBottom = compoundRect.width();
2270            } else {
2271                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2272            }
2273        }
2274
2275        // Save initial left/right drawables
2276        if (dr != null) {
2277            dr.mDrawableLeftInitial = left;
2278            dr.mDrawableRightInitial = right;
2279        }
2280
2281        resetResolvedDrawables();
2282        resolveDrawables();
2283        applyCompoundDrawableTint();
2284        invalidate();
2285        requestLayout();
2286    }
2287
2288    /**
2289     * Sets the Drawables (if any) to appear to the left of, above, to the
2290     * right of, and below the text. Use 0 if you do not want a Drawable there.
2291     * The Drawables' bounds will be set to their intrinsic bounds.
2292     * <p>
2293     * Calling this method will overwrite any Drawables previously set using
2294     * {@link #setCompoundDrawablesRelative} or related methods.
2295     *
2296     * @param left Resource identifier of the left Drawable.
2297     * @param top Resource identifier of the top Drawable.
2298     * @param right Resource identifier of the right Drawable.
2299     * @param bottom Resource identifier of the bottom Drawable.
2300     *
2301     * @attr ref android.R.styleable#TextView_drawableLeft
2302     * @attr ref android.R.styleable#TextView_drawableTop
2303     * @attr ref android.R.styleable#TextView_drawableRight
2304     * @attr ref android.R.styleable#TextView_drawableBottom
2305     */
2306    @android.view.RemotableViewMethod
2307    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2308            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2309        final Context context = getContext();
2310        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2311                top != 0 ? context.getDrawable(top) : null,
2312                right != 0 ? context.getDrawable(right) : null,
2313                bottom != 0 ? context.getDrawable(bottom) : null);
2314    }
2315
2316    /**
2317     * Sets the Drawables (if any) to appear to the left of, above, to the
2318     * right of, and below the text. Use {@code null} if you do not want a
2319     * Drawable there. The Drawables' bounds will be set to their intrinsic
2320     * bounds.
2321     * <p>
2322     * Calling this method will overwrite any Drawables previously set using
2323     * {@link #setCompoundDrawablesRelative} or related methods.
2324     *
2325     * @attr ref android.R.styleable#TextView_drawableLeft
2326     * @attr ref android.R.styleable#TextView_drawableTop
2327     * @attr ref android.R.styleable#TextView_drawableRight
2328     * @attr ref android.R.styleable#TextView_drawableBottom
2329     */
2330    @android.view.RemotableViewMethod
2331    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2332            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2333
2334        if (left != null) {
2335            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2336        }
2337        if (right != null) {
2338            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2339        }
2340        if (top != null) {
2341            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2342        }
2343        if (bottom != null) {
2344            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2345        }
2346        setCompoundDrawables(left, top, right, bottom);
2347    }
2348
2349    /**
2350     * Sets the Drawables (if any) to appear to the start of, above, to the end
2351     * of, and below the text. Use {@code null} if you do not want a Drawable
2352     * there. The Drawables must already have had {@link Drawable#setBounds}
2353     * called.
2354     * <p>
2355     * Calling this method will overwrite any Drawables previously set using
2356     * {@link #setCompoundDrawables} or related methods.
2357     *
2358     * @attr ref android.R.styleable#TextView_drawableStart
2359     * @attr ref android.R.styleable#TextView_drawableTop
2360     * @attr ref android.R.styleable#TextView_drawableEnd
2361     * @attr ref android.R.styleable#TextView_drawableBottom
2362     */
2363    @android.view.RemotableViewMethod
2364    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2365            @Nullable Drawable end, @Nullable Drawable bottom) {
2366        Drawables dr = mDrawables;
2367
2368        // We're switching to relative, discard absolute.
2369        if (dr != null) {
2370            if (dr.mShowing[Drawables.LEFT] != null) {
2371                dr.mShowing[Drawables.LEFT].setCallback(null);
2372            }
2373            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2374            if (dr.mShowing[Drawables.RIGHT] != null) {
2375                dr.mShowing[Drawables.RIGHT].setCallback(null);
2376            }
2377            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2378            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2379            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2380        }
2381
2382        final boolean drawables = start != null || top != null
2383                || end != null || bottom != null;
2384
2385        if (!drawables) {
2386            // Clearing drawables...  can we free the data structure?
2387            if (dr != null) {
2388                if (!dr.hasMetadata()) {
2389                    mDrawables = null;
2390                } else {
2391                    // We need to retain the last set padding, so just clear
2392                    // out all of the fields in the existing structure.
2393                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2394                    dr.mDrawableStart = null;
2395                    if (dr.mShowing[Drawables.TOP] != null) {
2396                        dr.mShowing[Drawables.TOP].setCallback(null);
2397                    }
2398                    dr.mShowing[Drawables.TOP] = null;
2399                    if (dr.mDrawableEnd != null) {
2400                        dr.mDrawableEnd.setCallback(null);
2401                    }
2402                    dr.mDrawableEnd = null;
2403                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2404                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2405                    }
2406                    dr.mShowing[Drawables.BOTTOM] = null;
2407                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2408                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2409                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2410                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2411                }
2412            }
2413        } else {
2414            if (dr == null) {
2415                mDrawables = dr = new Drawables(getContext());
2416            }
2417
2418            mDrawables.mOverride = true;
2419
2420            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2421                dr.mDrawableStart.setCallback(null);
2422            }
2423            dr.mDrawableStart = start;
2424
2425            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2426                dr.mShowing[Drawables.TOP].setCallback(null);
2427            }
2428            dr.mShowing[Drawables.TOP] = top;
2429
2430            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2431                dr.mDrawableEnd.setCallback(null);
2432            }
2433            dr.mDrawableEnd = end;
2434
2435            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2436                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2437            }
2438            dr.mShowing[Drawables.BOTTOM] = bottom;
2439
2440            final Rect compoundRect = dr.mCompoundRect;
2441            int[] state;
2442
2443            state = getDrawableState();
2444
2445            if (start != null) {
2446                start.setState(state);
2447                start.copyBounds(compoundRect);
2448                start.setCallback(this);
2449                dr.mDrawableSizeStart = compoundRect.width();
2450                dr.mDrawableHeightStart = compoundRect.height();
2451            } else {
2452                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2453            }
2454
2455            if (end != null) {
2456                end.setState(state);
2457                end.copyBounds(compoundRect);
2458                end.setCallback(this);
2459                dr.mDrawableSizeEnd = compoundRect.width();
2460                dr.mDrawableHeightEnd = compoundRect.height();
2461            } else {
2462                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2463            }
2464
2465            if (top != null) {
2466                top.setState(state);
2467                top.copyBounds(compoundRect);
2468                top.setCallback(this);
2469                dr.mDrawableSizeTop = compoundRect.height();
2470                dr.mDrawableWidthTop = compoundRect.width();
2471            } else {
2472                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2473            }
2474
2475            if (bottom != null) {
2476                bottom.setState(state);
2477                bottom.copyBounds(compoundRect);
2478                bottom.setCallback(this);
2479                dr.mDrawableSizeBottom = compoundRect.height();
2480                dr.mDrawableWidthBottom = compoundRect.width();
2481            } else {
2482                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2483            }
2484        }
2485
2486        resetResolvedDrawables();
2487        resolveDrawables();
2488        invalidate();
2489        requestLayout();
2490    }
2491
2492    /**
2493     * Sets the Drawables (if any) to appear to the start of, above, to the end
2494     * of, and below the text. Use 0 if you do not want a Drawable there. The
2495     * Drawables' bounds will be set to their intrinsic bounds.
2496     * <p>
2497     * Calling this method will overwrite any Drawables previously set using
2498     * {@link #setCompoundDrawables} or related methods.
2499     *
2500     * @param start Resource identifier of the start Drawable.
2501     * @param top Resource identifier of the top Drawable.
2502     * @param end Resource identifier of the end Drawable.
2503     * @param bottom Resource identifier of the bottom Drawable.
2504     *
2505     * @attr ref android.R.styleable#TextView_drawableStart
2506     * @attr ref android.R.styleable#TextView_drawableTop
2507     * @attr ref android.R.styleable#TextView_drawableEnd
2508     * @attr ref android.R.styleable#TextView_drawableBottom
2509     */
2510    @android.view.RemotableViewMethod
2511    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2512            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2513        final Context context = getContext();
2514        setCompoundDrawablesRelativeWithIntrinsicBounds(
2515                start != 0 ? context.getDrawable(start) : null,
2516                top != 0 ? context.getDrawable(top) : null,
2517                end != 0 ? context.getDrawable(end) : null,
2518                bottom != 0 ? context.getDrawable(bottom) : null);
2519    }
2520
2521    /**
2522     * Sets the Drawables (if any) to appear to the start of, above, to the end
2523     * of, and below the text. Use {@code null} if you do not want a Drawable
2524     * there. The Drawables' bounds will be set to their intrinsic bounds.
2525     * <p>
2526     * Calling this method will overwrite any Drawables previously set using
2527     * {@link #setCompoundDrawables} or related methods.
2528     *
2529     * @attr ref android.R.styleable#TextView_drawableStart
2530     * @attr ref android.R.styleable#TextView_drawableTop
2531     * @attr ref android.R.styleable#TextView_drawableEnd
2532     * @attr ref android.R.styleable#TextView_drawableBottom
2533     */
2534    @android.view.RemotableViewMethod
2535    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2536            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2537
2538        if (start != null) {
2539            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2540        }
2541        if (end != null) {
2542            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2543        }
2544        if (top != null) {
2545            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2546        }
2547        if (bottom != null) {
2548            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2549        }
2550        setCompoundDrawablesRelative(start, top, end, bottom);
2551    }
2552
2553    /**
2554     * Returns drawables for the left, top, right, and bottom borders.
2555     *
2556     * @attr ref android.R.styleable#TextView_drawableLeft
2557     * @attr ref android.R.styleable#TextView_drawableTop
2558     * @attr ref android.R.styleable#TextView_drawableRight
2559     * @attr ref android.R.styleable#TextView_drawableBottom
2560     */
2561    @NonNull
2562    public Drawable[] getCompoundDrawables() {
2563        final Drawables dr = mDrawables;
2564        if (dr != null) {
2565            return dr.mShowing.clone();
2566        } else {
2567            return new Drawable[] { null, null, null, null };
2568        }
2569    }
2570
2571    /**
2572     * Returns drawables for the start, top, end, and bottom borders.
2573     *
2574     * @attr ref android.R.styleable#TextView_drawableStart
2575     * @attr ref android.R.styleable#TextView_drawableTop
2576     * @attr ref android.R.styleable#TextView_drawableEnd
2577     * @attr ref android.R.styleable#TextView_drawableBottom
2578     */
2579    @NonNull
2580    public Drawable[] getCompoundDrawablesRelative() {
2581        final Drawables dr = mDrawables;
2582        if (dr != null) {
2583            return new Drawable[] {
2584                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2585                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2586            };
2587        } else {
2588            return new Drawable[] { null, null, null, null };
2589        }
2590    }
2591
2592    /**
2593     * Sets the size of the padding between the compound drawables and
2594     * the text.
2595     *
2596     * @attr ref android.R.styleable#TextView_drawablePadding
2597     */
2598    @android.view.RemotableViewMethod
2599    public void setCompoundDrawablePadding(int pad) {
2600        Drawables dr = mDrawables;
2601        if (pad == 0) {
2602            if (dr != null) {
2603                dr.mDrawablePadding = pad;
2604            }
2605        } else {
2606            if (dr == null) {
2607                mDrawables = dr = new Drawables(getContext());
2608            }
2609            dr.mDrawablePadding = pad;
2610        }
2611
2612        invalidate();
2613        requestLayout();
2614    }
2615
2616    /**
2617     * Returns the padding between the compound drawables and the text.
2618     *
2619     * @attr ref android.R.styleable#TextView_drawablePadding
2620     */
2621    public int getCompoundDrawablePadding() {
2622        final Drawables dr = mDrawables;
2623        return dr != null ? dr.mDrawablePadding : 0;
2624    }
2625
2626    /**
2627     * Applies a tint to the compound drawables. Does not modify the
2628     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2629     * <p>
2630     * Subsequent calls to
2631     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2632     * and related methods will automatically mutate the drawables and apply
2633     * the specified tint and tint mode using
2634     * {@link Drawable#setTintList(ColorStateList)}.
2635     *
2636     * @param tint the tint to apply, may be {@code null} to clear tint
2637     *
2638     * @attr ref android.R.styleable#TextView_drawableTint
2639     * @see #getCompoundDrawableTintList()
2640     * @see Drawable#setTintList(ColorStateList)
2641     */
2642    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2643        if (mDrawables == null) {
2644            mDrawables = new Drawables(getContext());
2645        }
2646        mDrawables.mTintList = tint;
2647        mDrawables.mHasTint = true;
2648
2649        applyCompoundDrawableTint();
2650    }
2651
2652    /**
2653     * @return the tint applied to the compound drawables
2654     * @attr ref android.R.styleable#TextView_drawableTint
2655     * @see #setCompoundDrawableTintList(ColorStateList)
2656     */
2657    public ColorStateList getCompoundDrawableTintList() {
2658        return mDrawables != null ? mDrawables.mTintList : null;
2659    }
2660
2661    /**
2662     * Specifies the blending mode used to apply the tint specified by
2663     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2664     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2665     *
2666     * @param tintMode the blending mode used to apply the tint, may be
2667     *                 {@code null} to clear tint
2668     * @attr ref android.R.styleable#TextView_drawableTintMode
2669     * @see #setCompoundDrawableTintList(ColorStateList)
2670     * @see Drawable#setTintMode(PorterDuff.Mode)
2671     */
2672    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2673        if (mDrawables == null) {
2674            mDrawables = new Drawables(getContext());
2675        }
2676        mDrawables.mTintMode = tintMode;
2677        mDrawables.mHasTintMode = true;
2678
2679        applyCompoundDrawableTint();
2680    }
2681
2682    /**
2683     * Returns the blending mode used to apply the tint to the compound
2684     * drawables, if specified.
2685     *
2686     * @return the blending mode used to apply the tint to the compound
2687     *         drawables
2688     * @attr ref android.R.styleable#TextView_drawableTintMode
2689     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2690     */
2691    public PorterDuff.Mode getCompoundDrawableTintMode() {
2692        return mDrawables != null ? mDrawables.mTintMode : null;
2693    }
2694
2695    private void applyCompoundDrawableTint() {
2696        if (mDrawables == null) {
2697            return;
2698        }
2699
2700        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2701            final ColorStateList tintList = mDrawables.mTintList;
2702            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2703            final boolean hasTint = mDrawables.mHasTint;
2704            final boolean hasTintMode = mDrawables.mHasTintMode;
2705            final int[] state = getDrawableState();
2706
2707            for (Drawable dr : mDrawables.mShowing) {
2708                if (dr == null) {
2709                    continue;
2710                }
2711
2712                if (dr == mDrawables.mDrawableError) {
2713                    // From a developer's perspective, the error drawable isn't
2714                    // a compound drawable. Don't apply the generic compound
2715                    // drawable tint to it.
2716                    continue;
2717                }
2718
2719                dr.mutate();
2720
2721                if (hasTint) {
2722                    dr.setTintList(tintList);
2723                }
2724
2725                if (hasTintMode) {
2726                    dr.setTintMode(tintMode);
2727                }
2728
2729                // The drawable (or one of its children) may not have been
2730                // stateful before applying the tint, so let's try again.
2731                if (dr.isStateful()) {
2732                    dr.setState(state);
2733                }
2734            }
2735        }
2736    }
2737
2738    @Override
2739    public void setPadding(int left, int top, int right, int bottom) {
2740        if (left != mPaddingLeft ||
2741            right != mPaddingRight ||
2742            top != mPaddingTop ||
2743            bottom != mPaddingBottom) {
2744            nullLayouts();
2745        }
2746
2747        // the super call will requestLayout()
2748        super.setPadding(left, top, right, bottom);
2749        invalidate();
2750    }
2751
2752    @Override
2753    public void setPaddingRelative(int start, int top, int end, int bottom) {
2754        if (start != getPaddingStart() ||
2755            end != getPaddingEnd() ||
2756            top != mPaddingTop ||
2757            bottom != mPaddingBottom) {
2758            nullLayouts();
2759        }
2760
2761        // the super call will requestLayout()
2762        super.setPaddingRelative(start, top, end, bottom);
2763        invalidate();
2764    }
2765
2766    /**
2767     * Gets the autolink mask of the text.  See {@link
2768     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2769     * possible values.
2770     *
2771     * @attr ref android.R.styleable#TextView_autoLink
2772     */
2773    public final int getAutoLinkMask() {
2774        return mAutoLinkMask;
2775    }
2776
2777    /**
2778     * Sets the text appearance from the specified style resource.
2779     * <p>
2780     * Use a framework-defined {@code TextAppearance} style like
2781     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2782     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2783     * set of attributes that can be used in a custom style.
2784     *
2785     * @param resId the resource identifier of the style to apply
2786     * @attr ref android.R.styleable#TextView_textAppearance
2787     */
2788    @SuppressWarnings("deprecation")
2789    public void setTextAppearance(@StyleRes int resId) {
2790        setTextAppearance(mContext, resId);
2791    }
2792
2793    /**
2794     * Sets the text color, size, style, hint color, and highlight color
2795     * from the specified TextAppearance resource.
2796     *
2797     * @deprecated Use {@link #setTextAppearance(int)} instead.
2798     */
2799    @Deprecated
2800    public void setTextAppearance(Context context, @StyleRes int resId) {
2801        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2802
2803        final int textColorHighlight = ta.getColor(
2804                R.styleable.TextAppearance_textColorHighlight, 0);
2805        if (textColorHighlight != 0) {
2806            setHighlightColor(textColorHighlight);
2807        }
2808
2809        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2810        if (textColor != null) {
2811            setTextColor(textColor);
2812        }
2813
2814        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2815        if (textSize != 0) {
2816            setRawTextSize(textSize);
2817        }
2818
2819        final ColorStateList textColorHint = ta.getColorStateList(
2820                R.styleable.TextAppearance_textColorHint);
2821        if (textColorHint != null) {
2822            setHintTextColor(textColorHint);
2823        }
2824
2825        final ColorStateList textColorLink = ta.getColorStateList(
2826                R.styleable.TextAppearance_textColorLink);
2827        if (textColorLink != null) {
2828            setLinkTextColor(textColorLink);
2829        }
2830
2831        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2832        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2833        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2834        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2835
2836        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2837        if (shadowColor != 0) {
2838            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2839            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2840            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2841            setShadowLayer(r, dx, dy, shadowColor);
2842        }
2843
2844        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2845            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2846        }
2847
2848        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2849            setElegantTextHeight(ta.getBoolean(
2850                R.styleable.TextAppearance_elegantTextHeight, false));
2851        }
2852
2853        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2854            setLetterSpacing(ta.getFloat(
2855                R.styleable.TextAppearance_letterSpacing, 0));
2856        }
2857
2858        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2859            setFontFeatureSettings(ta.getString(
2860                R.styleable.TextAppearance_fontFeatureSettings));
2861        }
2862
2863        ta.recycle();
2864    }
2865
2866    /**
2867     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2868     * the first member of {@link #getTextLocales()}.
2869     * @return the default primary {@link Locale} of the text in this TextView.
2870     */
2871    @NonNull
2872    public Locale getTextLocale() {
2873        return mTextPaint.getTextLocale();
2874    }
2875
2876    /**
2877     * Get the default {@link LocaleList} of the text in this TextView.
2878     * @return the default {@link LocaleList} of the text in this TextView.
2879     */
2880    @NonNull @Size(min=1)
2881    public LocaleList getTextLocales() {
2882        return mTextPaint.getTextLocales();
2883    }
2884
2885    /**
2886     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2887     * containing just the given value.
2888     *
2889     * @param locale the {@link Locale} for drawing text, must not be null.
2890     *
2891     * @see #setTextLocales
2892     */
2893    public void setTextLocale(@NonNull Locale locale) {
2894        mLocalesChanged = true;
2895        mTextPaint.setTextLocale(locale);
2896    }
2897
2898    /**
2899     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2900     *
2901     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2902     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2903     * other aspects of text display, including line breaking.
2904     *
2905     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2906     *
2907     * @see Paint#setTextLocales
2908     */
2909    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2910        mLocalesChanged = true;
2911        mTextPaint.setTextLocales(locales);
2912    }
2913
2914    @Override
2915    protected void onConfigurationChanged(Configuration newConfig) {
2916        super.onConfigurationChanged(newConfig);
2917        if (!mLocalesChanged) {
2918            mTextPaint.setTextLocales(LocaleList.getDefault());
2919        }
2920    }
2921
2922    /**
2923     * @return the size (in pixels) of the default text size in this TextView.
2924     */
2925    @ViewDebug.ExportedProperty(category = "text")
2926    public float getTextSize() {
2927        return mTextPaint.getTextSize();
2928    }
2929
2930    /**
2931     * @return the size (in scaled pixels) of thee default text size in this TextView.
2932     * @hide
2933     */
2934    @ViewDebug.ExportedProperty(category = "text")
2935    public float getScaledTextSize() {
2936        return mTextPaint.getTextSize() / mTextPaint.density;
2937    }
2938
2939    /** @hide */
2940    @ViewDebug.ExportedProperty(category = "text", mapping = {
2941            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2942            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2943            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2944            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2945    })
2946    public int getTypefaceStyle() {
2947        Typeface typeface = mTextPaint.getTypeface();
2948        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2949    }
2950
2951    /**
2952     * Set the default text size to the given value, interpreted as "scaled
2953     * pixel" units.  This size is adjusted based on the current density and
2954     * user font size preference.
2955     *
2956     * @param size The scaled pixel size.
2957     *
2958     * @attr ref android.R.styleable#TextView_textSize
2959     */
2960    @android.view.RemotableViewMethod
2961    public void setTextSize(float size) {
2962        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2963    }
2964
2965    /**
2966     * Set the default text size to a given unit and value.  See {@link
2967     * TypedValue} for the possible dimension units.
2968     *
2969     * @param unit The desired dimension unit.
2970     * @param size The desired size in the given units.
2971     *
2972     * @attr ref android.R.styleable#TextView_textSize
2973     */
2974    public void setTextSize(int unit, float size) {
2975        Context c = getContext();
2976        Resources r;
2977
2978        if (c == null)
2979            r = Resources.getSystem();
2980        else
2981            r = c.getResources();
2982
2983        setRawTextSize(TypedValue.applyDimension(
2984                unit, size, r.getDisplayMetrics()));
2985    }
2986
2987    private void setRawTextSize(float size) {
2988        if (size != mTextPaint.getTextSize()) {
2989            mTextPaint.setTextSize(size);
2990
2991            if (mLayout != null) {
2992                nullLayouts();
2993                requestLayout();
2994                invalidate();
2995            }
2996        }
2997    }
2998
2999    /**
3000     * @return the extent by which text is currently being stretched
3001     * horizontally.  This will usually be 1.
3002     */
3003    public float getTextScaleX() {
3004        return mTextPaint.getTextScaleX();
3005    }
3006
3007    /**
3008     * Sets the extent by which text should be stretched horizontally.
3009     *
3010     * @attr ref android.R.styleable#TextView_textScaleX
3011     */
3012    @android.view.RemotableViewMethod
3013    public void setTextScaleX(float size) {
3014        if (size != mTextPaint.getTextScaleX()) {
3015            mUserSetTextScaleX = true;
3016            mTextPaint.setTextScaleX(size);
3017
3018            if (mLayout != null) {
3019                nullLayouts();
3020                requestLayout();
3021                invalidate();
3022            }
3023        }
3024    }
3025
3026    /**
3027     * Sets the typeface and style in which the text should be displayed.
3028     * Note that not all Typeface families actually have bold and italic
3029     * variants, so you may need to use
3030     * {@link #setTypeface(Typeface, int)} to get the appearance
3031     * that you actually want.
3032     *
3033     * @see #getTypeface()
3034     *
3035     * @attr ref android.R.styleable#TextView_fontFamily
3036     * @attr ref android.R.styleable#TextView_typeface
3037     * @attr ref android.R.styleable#TextView_textStyle
3038     */
3039    public void setTypeface(Typeface tf) {
3040        if (mTextPaint.getTypeface() != tf) {
3041            mTextPaint.setTypeface(tf);
3042
3043            if (mLayout != null) {
3044                nullLayouts();
3045                requestLayout();
3046                invalidate();
3047            }
3048        }
3049    }
3050
3051    /**
3052     * @return the current typeface and style in which the text is being
3053     * displayed.
3054     *
3055     * @see #setTypeface(Typeface)
3056     *
3057     * @attr ref android.R.styleable#TextView_fontFamily
3058     * @attr ref android.R.styleable#TextView_typeface
3059     * @attr ref android.R.styleable#TextView_textStyle
3060     */
3061    public Typeface getTypeface() {
3062        return mTextPaint.getTypeface();
3063    }
3064
3065    /**
3066     * Set the TextView's elegant height metrics flag. This setting selects font
3067     * variants that have not been compacted to fit Latin-based vertical
3068     * metrics, and also increases top and bottom bounds to provide more space.
3069     *
3070     * @param elegant set the paint's elegant metrics flag.
3071     *
3072     * @attr ref android.R.styleable#TextView_elegantTextHeight
3073     */
3074    public void setElegantTextHeight(boolean elegant) {
3075        if (elegant != mTextPaint.isElegantTextHeight()) {
3076            mTextPaint.setElegantTextHeight(elegant);
3077            if (mLayout != null) {
3078                nullLayouts();
3079                requestLayout();
3080                invalidate();
3081            }
3082        }
3083    }
3084
3085    /**
3086     * @return the extent by which text is currently being letter-spaced.
3087     * This will normally be 0.
3088     *
3089     * @see #setLetterSpacing(float)
3090     * @see Paint#setLetterSpacing
3091     */
3092    public float getLetterSpacing() {
3093        return mTextPaint.getLetterSpacing();
3094    }
3095
3096    /**
3097     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3098     * for slight expansion will be around 0.05.  Negative values tighten text.
3099     *
3100     * @see #getLetterSpacing()
3101     * @see Paint#getLetterSpacing
3102     *
3103     * @attr ref android.R.styleable#TextView_letterSpacing
3104     */
3105    @android.view.RemotableViewMethod
3106    public void setLetterSpacing(float letterSpacing) {
3107        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3108            mTextPaint.setLetterSpacing(letterSpacing);
3109
3110            if (mLayout != null) {
3111                nullLayouts();
3112                requestLayout();
3113                invalidate();
3114            }
3115        }
3116    }
3117
3118    /**
3119     * Returns the font feature settings. The format is the same as the CSS
3120     * font-feature-settings attribute:
3121     * <a href="http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings">
3122     *     http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings</a>
3123     *
3124     * @return the currently set font feature settings.  Default is null.
3125     *
3126     * @see #setFontFeatureSettings(String)
3127     * @see Paint#setFontFeatureSettings(String) Paint.setFontFeatureSettings(String)
3128     */
3129    @Nullable
3130    public String getFontFeatureSettings() {
3131        return mTextPaint.getFontFeatureSettings();
3132    }
3133
3134    /**
3135     * Sets the break strategy for breaking paragraphs into lines. The default value for
3136     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3137     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3138     * text "dancing" when being edited.
3139     *
3140     * @attr ref android.R.styleable#TextView_breakStrategy
3141     * @see #getBreakStrategy()
3142     */
3143    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3144        mBreakStrategy = breakStrategy;
3145        if (mLayout != null) {
3146            nullLayouts();
3147            requestLayout();
3148            invalidate();
3149        }
3150    }
3151
3152    /**
3153     * @return the currently set break strategy.
3154     *
3155     * @attr ref android.R.styleable#TextView_breakStrategy
3156     * @see #setBreakStrategy(int)
3157     */
3158    @Layout.BreakStrategy
3159    public int getBreakStrategy() {
3160        return mBreakStrategy;
3161    }
3162
3163    /**
3164     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3165     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3166     *
3167     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3168     * @see #getHyphenationFrequency()
3169     */
3170    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3171        mHyphenationFrequency = hyphenationFrequency;
3172        if (mLayout != null) {
3173            nullLayouts();
3174            requestLayout();
3175            invalidate();
3176        }
3177    }
3178
3179    /**
3180     * @return the currently set hyphenation frequency.
3181     *
3182     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3183     * @see #setHyphenationFrequency(int)
3184     */
3185    @Layout.HyphenationFrequency
3186    public int getHyphenationFrequency() {
3187        return mHyphenationFrequency;
3188    }
3189
3190    /**
3191     * Sets font feature settings. The format is the same as the CSS
3192     * font-feature-settings attribute:
3193     * <a href="http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings">
3194     *     http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings</a>
3195     *
3196     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3197     *
3198     * @see #getFontFeatureSettings()
3199     * @see Paint#getFontFeatureSettings() Paint.getFontFeatureSettings()
3200     *
3201     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3202     */
3203    @android.view.RemotableViewMethod
3204    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3205        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3206            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3207
3208            if (mLayout != null) {
3209                nullLayouts();
3210                requestLayout();
3211                invalidate();
3212            }
3213        }
3214    }
3215
3216
3217    /**
3218     * Sets the text color for all the states (normal, selected,
3219     * focused) to be this color.
3220     *
3221     * @see #setTextColor(ColorStateList)
3222     * @see #getTextColors()
3223     *
3224     * @attr ref android.R.styleable#TextView_textColor
3225     */
3226    @android.view.RemotableViewMethod
3227    public void setTextColor(@ColorInt int color) {
3228        mTextColor = ColorStateList.valueOf(color);
3229        updateTextColors();
3230    }
3231
3232    /**
3233     * Sets the text color.
3234     *
3235     * @see #setTextColor(int)
3236     * @see #getTextColors()
3237     * @see #setHintTextColor(ColorStateList)
3238     * @see #setLinkTextColor(ColorStateList)
3239     *
3240     * @attr ref android.R.styleable#TextView_textColor
3241     */
3242    public void setTextColor(ColorStateList colors) {
3243        if (colors == null) {
3244            throw new NullPointerException();
3245        }
3246
3247        mTextColor = colors;
3248        updateTextColors();
3249    }
3250
3251    /**
3252     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3253     *
3254     * @see #setTextColor(ColorStateList)
3255     * @see #setTextColor(int)
3256     *
3257     * @attr ref android.R.styleable#TextView_textColor
3258     */
3259    public final ColorStateList getTextColors() {
3260        return mTextColor;
3261    }
3262
3263    /**
3264     * <p>Return the current color selected for normal text.</p>
3265     *
3266     * @return Returns the current text color.
3267     */
3268    @ColorInt
3269    public final int getCurrentTextColor() {
3270        return mCurTextColor;
3271    }
3272
3273    /**
3274     * Sets the color used to display the selection highlight.
3275     *
3276     * @attr ref android.R.styleable#TextView_textColorHighlight
3277     */
3278    @android.view.RemotableViewMethod
3279    public void setHighlightColor(@ColorInt int color) {
3280        if (mHighlightColor != color) {
3281            mHighlightColor = color;
3282            invalidate();
3283        }
3284    }
3285
3286    /**
3287     * @return the color used to display the selection highlight
3288     *
3289     * @see #setHighlightColor(int)
3290     *
3291     * @attr ref android.R.styleable#TextView_textColorHighlight
3292     */
3293    @ColorInt
3294    public int getHighlightColor() {
3295        return mHighlightColor;
3296    }
3297
3298    /**
3299     * Sets whether the soft input method will be made visible when this
3300     * TextView gets focused. The default is true.
3301     */
3302    @android.view.RemotableViewMethod
3303    public final void setShowSoftInputOnFocus(boolean show) {
3304        createEditorIfNeeded();
3305        mEditor.mShowSoftInputOnFocus = show;
3306    }
3307
3308    /**
3309     * Returns whether the soft input method will be made visible when this
3310     * TextView gets focused. The default is true.
3311     */
3312    public final boolean getShowSoftInputOnFocus() {
3313        // When there is no Editor, return default true value
3314        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3315    }
3316
3317    /**
3318     * Gives the text a shadow of the specified blur radius and color, the specified
3319     * distance from its drawn position.
3320     * <p>
3321     * The text shadow produced does not interact with the properties on view
3322     * that are responsible for real time shadows,
3323     * {@link View#getElevation() elevation} and
3324     * {@link View#getTranslationZ() translationZ}.
3325     *
3326     * @see Paint#setShadowLayer(float, float, float, int)
3327     *
3328     * @attr ref android.R.styleable#TextView_shadowColor
3329     * @attr ref android.R.styleable#TextView_shadowDx
3330     * @attr ref android.R.styleable#TextView_shadowDy
3331     * @attr ref android.R.styleable#TextView_shadowRadius
3332     */
3333    public void setShadowLayer(float radius, float dx, float dy, int color) {
3334        mTextPaint.setShadowLayer(radius, dx, dy, color);
3335
3336        mShadowRadius = radius;
3337        mShadowDx = dx;
3338        mShadowDy = dy;
3339        mShadowColor = color;
3340
3341        // Will change text clip region
3342        if (mEditor != null) mEditor.invalidateTextDisplayList();
3343        invalidate();
3344    }
3345
3346    /**
3347     * Gets the radius of the shadow layer.
3348     *
3349     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3350     *
3351     * @see #setShadowLayer(float, float, float, int)
3352     *
3353     * @attr ref android.R.styleable#TextView_shadowRadius
3354     */
3355    public float getShadowRadius() {
3356        return mShadowRadius;
3357    }
3358
3359    /**
3360     * @return the horizontal offset of the shadow layer
3361     *
3362     * @see #setShadowLayer(float, float, float, int)
3363     *
3364     * @attr ref android.R.styleable#TextView_shadowDx
3365     */
3366    public float getShadowDx() {
3367        return mShadowDx;
3368    }
3369
3370    /**
3371     * @return the vertical offset of the shadow layer
3372     *
3373     * @see #setShadowLayer(float, float, float, int)
3374     *
3375     * @attr ref android.R.styleable#TextView_shadowDy
3376     */
3377    public float getShadowDy() {
3378        return mShadowDy;
3379    }
3380
3381    /**
3382     * @return the color of the shadow layer
3383     *
3384     * @see #setShadowLayer(float, float, float, int)
3385     *
3386     * @attr ref android.R.styleable#TextView_shadowColor
3387     */
3388    @ColorInt
3389    public int getShadowColor() {
3390        return mShadowColor;
3391    }
3392
3393    /**
3394     * @return the base paint used for the text.  Please use this only to
3395     * consult the Paint's properties and not to change them.
3396     */
3397    public TextPaint getPaint() {
3398        return mTextPaint;
3399    }
3400
3401    /**
3402     * Sets the autolink mask of the text.  See {@link
3403     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3404     * possible values.
3405     *
3406     * @attr ref android.R.styleable#TextView_autoLink
3407     */
3408    @android.view.RemotableViewMethod
3409    public final void setAutoLinkMask(int mask) {
3410        mAutoLinkMask = mask;
3411    }
3412
3413    /**
3414     * Sets whether the movement method will automatically be set to {@link LinkMovementMethod}
3415     * after {@link #setText} or {@link #append} is called. The movement method is set if one of the
3416     * following is true:
3417     * <ul>
3418     * <li>{@link #setAutoLinkMask} has been set to nonzero and links are detected in
3419     * {@link #setText} or {@link #append}.
3420     * <li>The input for {@link #setText} or {@link #append} contains a {@link ClickableSpan}.
3421     * </ul>
3422     *
3423     * <p>This function does not have an immediate effect, movement method will be set only after a
3424     * call to {@link #setText} or {@link #append}. The default is true.</p>
3425     *
3426     * @attr ref android.R.styleable#TextView_linksClickable
3427     */
3428    @android.view.RemotableViewMethod
3429    public final void setLinksClickable(boolean whether) {
3430        mLinksClickable = whether;
3431    }
3432
3433    /**
3434     * Returns whether the movement method will automatically be set to {@link LinkMovementMethod}
3435     * after {@link #setText} or {@link #append} is called.
3436     *
3437     * See {@link #setLinksClickable} for details.
3438     *
3439     * <p>The default is true.</p>
3440     *
3441     * @see #setLinksClickable
3442     *
3443     * @attr ref android.R.styleable#TextView_linksClickable
3444     */
3445    public final boolean getLinksClickable() {
3446        return mLinksClickable;
3447    }
3448
3449    /**
3450     * Returns the list of URLSpans attached to the text
3451     * (by {@link Linkify} or otherwise) if any.  You can call
3452     * {@link URLSpan#getURL} on them to find where they link to
3453     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3454     * to find the region of the text they are attached to.
3455     */
3456    public URLSpan[] getUrls() {
3457        if (mText instanceof Spanned) {
3458            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3459        } else {
3460            return new URLSpan[0];
3461        }
3462    }
3463
3464    /**
3465     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3466     * TextView.
3467     *
3468     * @see #setHintTextColor(ColorStateList)
3469     * @see #getHintTextColors()
3470     * @see #setTextColor(int)
3471     *
3472     * @attr ref android.R.styleable#TextView_textColorHint
3473     */
3474    @android.view.RemotableViewMethod
3475    public final void setHintTextColor(@ColorInt int color) {
3476        mHintTextColor = ColorStateList.valueOf(color);
3477        updateTextColors();
3478    }
3479
3480    /**
3481     * Sets the color of the hint text.
3482     *
3483     * @see #getHintTextColors()
3484     * @see #setHintTextColor(int)
3485     * @see #setTextColor(ColorStateList)
3486     * @see #setLinkTextColor(ColorStateList)
3487     *
3488     * @attr ref android.R.styleable#TextView_textColorHint
3489     */
3490    public final void setHintTextColor(ColorStateList colors) {
3491        mHintTextColor = colors;
3492        updateTextColors();
3493    }
3494
3495    /**
3496     * @return the color of the hint text, for the different states of this TextView.
3497     *
3498     * @see #setHintTextColor(ColorStateList)
3499     * @see #setHintTextColor(int)
3500     * @see #setTextColor(ColorStateList)
3501     * @see #setLinkTextColor(ColorStateList)
3502     *
3503     * @attr ref android.R.styleable#TextView_textColorHint
3504     */
3505    public final ColorStateList getHintTextColors() {
3506        return mHintTextColor;
3507    }
3508
3509    /**
3510     * <p>Return the current color selected to paint the hint text.</p>
3511     *
3512     * @return Returns the current hint text color.
3513     */
3514    @ColorInt
3515    public final int getCurrentHintTextColor() {
3516        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3517    }
3518
3519    /**
3520     * Sets the color of links in the text.
3521     *
3522     * @see #setLinkTextColor(ColorStateList)
3523     * @see #getLinkTextColors()
3524     *
3525     * @attr ref android.R.styleable#TextView_textColorLink
3526     */
3527    @android.view.RemotableViewMethod
3528    public final void setLinkTextColor(@ColorInt int color) {
3529        mLinkTextColor = ColorStateList.valueOf(color);
3530        updateTextColors();
3531    }
3532
3533    /**
3534     * Sets the color of links in the text.
3535     *
3536     * @see #setLinkTextColor(int)
3537     * @see #getLinkTextColors()
3538     * @see #setTextColor(ColorStateList)
3539     * @see #setHintTextColor(ColorStateList)
3540     *
3541     * @attr ref android.R.styleable#TextView_textColorLink
3542     */
3543    public final void setLinkTextColor(ColorStateList colors) {
3544        mLinkTextColor = colors;
3545        updateTextColors();
3546    }
3547
3548    /**
3549     * @return the list of colors used to paint the links in the text, for the different states of
3550     * this TextView
3551     *
3552     * @see #setLinkTextColor(ColorStateList)
3553     * @see #setLinkTextColor(int)
3554     *
3555     * @attr ref android.R.styleable#TextView_textColorLink
3556     */
3557    public final ColorStateList getLinkTextColors() {
3558        return mLinkTextColor;
3559    }
3560
3561    /**
3562     * Sets the horizontal alignment of the text and the
3563     * vertical gravity that will be used when there is extra space
3564     * in the TextView beyond what is required for the text itself.
3565     *
3566     * @see android.view.Gravity
3567     * @attr ref android.R.styleable#TextView_gravity
3568     */
3569    public void setGravity(int gravity) {
3570        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3571            gravity |= Gravity.START;
3572        }
3573        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3574            gravity |= Gravity.TOP;
3575        }
3576
3577        boolean newLayout = false;
3578
3579        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3580            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3581            newLayout = true;
3582        }
3583
3584        if (gravity != mGravity) {
3585            invalidate();
3586        }
3587
3588        mGravity = gravity;
3589
3590        if (mLayout != null && newLayout) {
3591            // XXX this is heavy-handed because no actual content changes.
3592            int want = mLayout.getWidth();
3593            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3594
3595            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3596                          mRight - mLeft - getCompoundPaddingLeft() -
3597                          getCompoundPaddingRight(), true);
3598        }
3599    }
3600
3601    /**
3602     * Returns the horizontal and vertical alignment of this TextView.
3603     *
3604     * @see android.view.Gravity
3605     * @attr ref android.R.styleable#TextView_gravity
3606     */
3607    public int getGravity() {
3608        return mGravity;
3609    }
3610
3611    /**
3612     * @return the flags on the Paint being used to display the text.
3613     * @see Paint#getFlags
3614     */
3615    public int getPaintFlags() {
3616        return mTextPaint.getFlags();
3617    }
3618
3619    /**
3620     * Sets flags on the Paint being used to display the text and
3621     * reflows the text if they are different from the old flags.
3622     * @see Paint#setFlags
3623     */
3624    @android.view.RemotableViewMethod
3625    public void setPaintFlags(int flags) {
3626        if (mTextPaint.getFlags() != flags) {
3627            mTextPaint.setFlags(flags);
3628
3629            if (mLayout != null) {
3630                nullLayouts();
3631                requestLayout();
3632                invalidate();
3633            }
3634        }
3635    }
3636
3637    /**
3638     * Sets whether the text should be allowed to be wider than the
3639     * View is.  If false, it will be wrapped to the width of the View.
3640     *
3641     * @attr ref android.R.styleable#TextView_scrollHorizontally
3642     */
3643    public void setHorizontallyScrolling(boolean whether) {
3644        if (mHorizontallyScrolling != whether) {
3645            mHorizontallyScrolling = whether;
3646
3647            if (mLayout != null) {
3648                nullLayouts();
3649                requestLayout();
3650                invalidate();
3651            }
3652        }
3653    }
3654
3655    /**
3656     * Returns whether the text is allowed to be wider than the View is.
3657     * If false, the text will be wrapped to the width of the View.
3658     *
3659     * @attr ref android.R.styleable#TextView_scrollHorizontally
3660     * @hide
3661     */
3662    public boolean getHorizontallyScrolling() {
3663        return mHorizontallyScrolling;
3664    }
3665
3666    /**
3667     * Makes the TextView at least this many lines tall.
3668     *
3669     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3670     * set this value to 1.
3671     *
3672     * @see #getMinLines()
3673     *
3674     * @attr ref android.R.styleable#TextView_minLines
3675     */
3676    @android.view.RemotableViewMethod
3677    public void setMinLines(int minlines) {
3678        mMinimum = minlines;
3679        mMinMode = LINES;
3680
3681        requestLayout();
3682        invalidate();
3683    }
3684
3685    /**
3686     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3687     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3688     *
3689     * @see #setMinLines(int)
3690     *
3691     * @attr ref android.R.styleable#TextView_minLines
3692     */
3693    public int getMinLines() {
3694        return mMinMode == LINES ? mMinimum : -1;
3695    }
3696
3697    /**
3698     * Makes the TextView at least this many pixels tall.
3699     *
3700     * Setting this value overrides any other (minimum) number of lines setting.
3701     *
3702     * @attr ref android.R.styleable#TextView_minHeight
3703     */
3704    @android.view.RemotableViewMethod
3705    public void setMinHeight(int minHeight) {
3706        mMinimum = minHeight;
3707        mMinMode = PIXELS;
3708
3709        requestLayout();
3710        invalidate();
3711    }
3712
3713    /**
3714     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3715     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3716     *
3717     * @see #setMinHeight(int)
3718     *
3719     * @attr ref android.R.styleable#TextView_minHeight
3720     */
3721    public int getMinHeight() {
3722        return mMinMode == PIXELS ? mMinimum : -1;
3723    }
3724
3725    /**
3726     * Makes the TextView at most this many lines tall.
3727     *
3728     * Setting this value overrides any other (maximum) height setting.
3729     *
3730     * @attr ref android.R.styleable#TextView_maxLines
3731     */
3732    @android.view.RemotableViewMethod
3733    public void setMaxLines(int maxlines) {
3734        mMaximum = maxlines;
3735        mMaxMode = LINES;
3736
3737        requestLayout();
3738        invalidate();
3739    }
3740
3741    /**
3742     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3743     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3744     *
3745     * @see #setMaxLines(int)
3746     *
3747     * @attr ref android.R.styleable#TextView_maxLines
3748     */
3749    public int getMaxLines() {
3750        return mMaxMode == LINES ? mMaximum : -1;
3751    }
3752
3753    /**
3754     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3755     * {@link #setMaxLines(int)} method.
3756     *
3757     * Setting this value overrides any other (maximum) number of lines setting.
3758     *
3759     * @attr ref android.R.styleable#TextView_maxHeight
3760     */
3761    @android.view.RemotableViewMethod
3762    public void setMaxHeight(int maxHeight) {
3763        mMaximum = maxHeight;
3764        mMaxMode = PIXELS;
3765
3766        requestLayout();
3767        invalidate();
3768    }
3769
3770    /**
3771     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3772     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3773     *
3774     * @see #setMaxHeight(int)
3775     *
3776     * @attr ref android.R.styleable#TextView_maxHeight
3777     */
3778    public int getMaxHeight() {
3779        return mMaxMode == PIXELS ? mMaximum : -1;
3780    }
3781
3782    /**
3783     * Makes the TextView exactly this many lines tall.
3784     *
3785     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3786     * height setting. A single line TextView will set this value to 1.
3787     *
3788     * @attr ref android.R.styleable#TextView_lines
3789     */
3790    @android.view.RemotableViewMethod
3791    public void setLines(int lines) {
3792        mMaximum = mMinimum = lines;
3793        mMaxMode = mMinMode = LINES;
3794
3795        requestLayout();
3796        invalidate();
3797    }
3798
3799    /**
3800     * Makes the TextView exactly this many pixels tall.
3801     * You could do the same thing by specifying this number in the
3802     * LayoutParams.
3803     *
3804     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3805     * height setting.
3806     *
3807     * @attr ref android.R.styleable#TextView_height
3808     */
3809    @android.view.RemotableViewMethod
3810    public void setHeight(int pixels) {
3811        mMaximum = mMinimum = pixels;
3812        mMaxMode = mMinMode = PIXELS;
3813
3814        requestLayout();
3815        invalidate();
3816    }
3817
3818    /**
3819     * Makes the TextView at least this many ems wide
3820     *
3821     * @attr ref android.R.styleable#TextView_minEms
3822     */
3823    @android.view.RemotableViewMethod
3824    public void setMinEms(int minems) {
3825        mMinWidth = minems;
3826        mMinWidthMode = EMS;
3827
3828        requestLayout();
3829        invalidate();
3830    }
3831
3832    /**
3833     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3834     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3835     *
3836     * @see #setMinEms(int)
3837     * @see #setEms(int)
3838     *
3839     * @attr ref android.R.styleable#TextView_minEms
3840     */
3841    public int getMinEms() {
3842        return mMinWidthMode == EMS ? mMinWidth : -1;
3843    }
3844
3845    /**
3846     * Makes the TextView at least this many pixels wide
3847     *
3848     * @attr ref android.R.styleable#TextView_minWidth
3849     */
3850    @android.view.RemotableViewMethod
3851    public void setMinWidth(int minpixels) {
3852        mMinWidth = minpixels;
3853        mMinWidthMode = PIXELS;
3854
3855        requestLayout();
3856        invalidate();
3857    }
3858
3859    /**
3860     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3861     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3862     *
3863     * @see #setMinWidth(int)
3864     * @see #setWidth(int)
3865     *
3866     * @attr ref android.R.styleable#TextView_minWidth
3867     */
3868    public int getMinWidth() {
3869        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3870    }
3871
3872    /**
3873     * Makes the TextView at most this many ems wide
3874     *
3875     * @attr ref android.R.styleable#TextView_maxEms
3876     */
3877    @android.view.RemotableViewMethod
3878    public void setMaxEms(int maxems) {
3879        mMaxWidth = maxems;
3880        mMaxWidthMode = EMS;
3881
3882        requestLayout();
3883        invalidate();
3884    }
3885
3886    /**
3887     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3888     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3889     *
3890     * @see #setMaxEms(int)
3891     * @see #setEms(int)
3892     *
3893     * @attr ref android.R.styleable#TextView_maxEms
3894     */
3895    public int getMaxEms() {
3896        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3897    }
3898
3899    /**
3900     * Makes the TextView at most this many pixels wide
3901     *
3902     * @attr ref android.R.styleable#TextView_maxWidth
3903     */
3904    @android.view.RemotableViewMethod
3905    public void setMaxWidth(int maxpixels) {
3906        mMaxWidth = maxpixels;
3907        mMaxWidthMode = PIXELS;
3908
3909        requestLayout();
3910        invalidate();
3911    }
3912
3913    /**
3914     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3915     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3916     *
3917     * @see #setMaxWidth(int)
3918     * @see #setWidth(int)
3919     *
3920     * @attr ref android.R.styleable#TextView_maxWidth
3921     */
3922    public int getMaxWidth() {
3923        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3924    }
3925
3926    /**
3927     * Makes the TextView exactly this many ems wide
3928     *
3929     * @see #setMaxEms(int)
3930     * @see #setMinEms(int)
3931     * @see #getMinEms()
3932     * @see #getMaxEms()
3933     *
3934     * @attr ref android.R.styleable#TextView_ems
3935     */
3936    @android.view.RemotableViewMethod
3937    public void setEms(int ems) {
3938        mMaxWidth = mMinWidth = ems;
3939        mMaxWidthMode = mMinWidthMode = EMS;
3940
3941        requestLayout();
3942        invalidate();
3943    }
3944
3945    /**
3946     * Makes the TextView exactly this many pixels wide.
3947     * You could do the same thing by specifying this number in the
3948     * LayoutParams.
3949     *
3950     * @see #setMaxWidth(int)
3951     * @see #setMinWidth(int)
3952     * @see #getMinWidth()
3953     * @see #getMaxWidth()
3954     *
3955     * @attr ref android.R.styleable#TextView_width
3956     */
3957    @android.view.RemotableViewMethod
3958    public void setWidth(int pixels) {
3959        mMaxWidth = mMinWidth = pixels;
3960        mMaxWidthMode = mMinWidthMode = PIXELS;
3961
3962        requestLayout();
3963        invalidate();
3964    }
3965
3966    /**
3967     * Sets line spacing for this TextView.  Each line will have its height
3968     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3969     *
3970     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3971     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3972     */
3973    public void setLineSpacing(float add, float mult) {
3974        if (mSpacingAdd != add || mSpacingMult != mult) {
3975            mSpacingAdd = add;
3976            mSpacingMult = mult;
3977
3978            if (mLayout != null) {
3979                nullLayouts();
3980                requestLayout();
3981                invalidate();
3982            }
3983        }
3984    }
3985
3986    /**
3987     * Gets the line spacing multiplier
3988     *
3989     * @return the value by which each line's height is multiplied to get its actual height.
3990     *
3991     * @see #setLineSpacing(float, float)
3992     * @see #getLineSpacingExtra()
3993     *
3994     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3995     */
3996    public float getLineSpacingMultiplier() {
3997        return mSpacingMult;
3998    }
3999
4000    /**
4001     * Gets the line spacing extra space
4002     *
4003     * @return the extra space that is added to the height of each lines of this TextView.
4004     *
4005     * @see #setLineSpacing(float, float)
4006     * @see #getLineSpacingMultiplier()
4007     *
4008     * @attr ref android.R.styleable#TextView_lineSpacingExtra
4009     */
4010    public float getLineSpacingExtra() {
4011        return mSpacingAdd;
4012    }
4013
4014    /**
4015     * Convenience method: Append the specified text to the TextView's
4016     * display buffer, upgrading it to BufferType.EDITABLE if it was
4017     * not already editable.
4018     */
4019    public final void append(CharSequence text) {
4020        append(text, 0, text.length());
4021    }
4022
4023    /**
4024     * Convenience method: Append the specified text slice to the TextView's
4025     * display buffer, upgrading it to BufferType.EDITABLE if it was
4026     * not already editable.
4027     */
4028    public void append(CharSequence text, int start, int end) {
4029        if (!(mText instanceof Editable)) {
4030            setText(mText, BufferType.EDITABLE);
4031        }
4032
4033        ((Editable) mText).append(text, start, end);
4034
4035        boolean hasClickableSpans = false;
4036        if (mAutoLinkMask != 0) {
4037            hasClickableSpans = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4038        } else if (mLinksClickable && text instanceof Spanned) {
4039            ClickableSpan[] clickableSpans =
4040                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4041            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4042        }
4043
4044        // Do not change the movement method for text that supports text selection as it
4045        // would prevent an arbitrary cursor displacement.
4046        if (hasClickableSpans && mLinksClickable && !textCanBeSelected()) {
4047            setMovementMethod(LinkMovementMethod.getInstance());
4048        }
4049    }
4050
4051    private void updateTextColors() {
4052        boolean inval = false;
4053        int color = mTextColor.getColorForState(getDrawableState(), 0);
4054        if (color != mCurTextColor) {
4055            mCurTextColor = color;
4056            inval = true;
4057        }
4058        if (mLinkTextColor != null) {
4059            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4060            if (color != mTextPaint.linkColor) {
4061                mTextPaint.linkColor = color;
4062                inval = true;
4063            }
4064        }
4065        if (mHintTextColor != null) {
4066            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4067            if (color != mCurHintTextColor) {
4068                mCurHintTextColor = color;
4069                if (mText.length() == 0) {
4070                    inval = true;
4071                }
4072            }
4073        }
4074        if (inval) {
4075            // Text needs to be redrawn with the new color
4076            if (mEditor != null) mEditor.invalidateTextDisplayList();
4077            invalidate();
4078        }
4079    }
4080
4081    @Override
4082    protected void drawableStateChanged() {
4083        super.drawableStateChanged();
4084
4085        if (mTextColor != null && mTextColor.isStateful()
4086                || (mHintTextColor != null && mHintTextColor.isStateful())
4087                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4088            updateTextColors();
4089        }
4090
4091        if (mDrawables != null) {
4092            final int[] state = getDrawableState();
4093            for (Drawable dr : mDrawables.mShowing) {
4094                if (dr != null && dr.isStateful() && dr.setState(state)) {
4095                    invalidateDrawable(dr);
4096                }
4097            }
4098        }
4099    }
4100
4101    @Override
4102    public void drawableHotspotChanged(float x, float y) {
4103        super.drawableHotspotChanged(x, y);
4104
4105        if (mDrawables != null) {
4106            for (Drawable dr : mDrawables.mShowing) {
4107                if (dr != null) {
4108                    dr.setHotspot(x, y);
4109                }
4110            }
4111        }
4112    }
4113
4114    @Override
4115    public Parcelable onSaveInstanceState() {
4116        Parcelable superState = super.onSaveInstanceState();
4117
4118        // Save state if we are forced to
4119        final boolean freezesText = getFreezesText();
4120        boolean hasSelection = false;
4121        int start = -1;
4122        int end = -1;
4123
4124        if (mText != null) {
4125            start = getSelectionStart();
4126            end = getSelectionEnd();
4127            if (start >= 0 || end >= 0) {
4128                // Or save state if there is a selection
4129                hasSelection = true;
4130            }
4131        }
4132
4133        if (freezesText || hasSelection) {
4134            SavedState ss = new SavedState(superState);
4135
4136            if (freezesText) {
4137                if (mText instanceof Spanned) {
4138                    final Spannable sp = new SpannableStringBuilder(mText);
4139
4140                    if (mEditor != null) {
4141                        removeMisspelledSpans(sp);
4142                        sp.removeSpan(mEditor.mSuggestionRangeSpan);
4143                    }
4144
4145                    ss.text = sp;
4146                } else {
4147                    ss.text = mText.toString();
4148                }
4149            }
4150
4151            if (hasSelection) {
4152                // XXX Should also save the current scroll position!
4153                ss.selStart = start;
4154                ss.selEnd = end;
4155            }
4156
4157            if (isFocused() && start >= 0 && end >= 0) {
4158                ss.frozenWithFocus = true;
4159            }
4160
4161            ss.error = getError();
4162
4163            if (mEditor != null) {
4164                ss.editorState = mEditor.saveInstanceState();
4165            }
4166            return ss;
4167        }
4168
4169        return superState;
4170    }
4171
4172    void removeMisspelledSpans(Spannable spannable) {
4173        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4174                SuggestionSpan.class);
4175        for (int i = 0; i < suggestionSpans.length; i++) {
4176            int flags = suggestionSpans[i].getFlags();
4177            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4178                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4179                spannable.removeSpan(suggestionSpans[i]);
4180            }
4181        }
4182    }
4183
4184    @Override
4185    public void onRestoreInstanceState(Parcelable state) {
4186        if (!(state instanceof SavedState)) {
4187            super.onRestoreInstanceState(state);
4188            return;
4189        }
4190
4191        SavedState ss = (SavedState)state;
4192        super.onRestoreInstanceState(ss.getSuperState());
4193
4194        // XXX restore buffer type too, as well as lots of other stuff
4195        if (ss.text != null) {
4196            setText(ss.text);
4197        }
4198
4199        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4200            if (mText instanceof Spannable) {
4201                int len = mText.length();
4202
4203                if (ss.selStart > len || ss.selEnd > len) {
4204                    String restored = "";
4205
4206                    if (ss.text != null) {
4207                        restored = "(restored) ";
4208                    }
4209
4210                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4211                          "/" + ss.selEnd + " out of range for " + restored +
4212                          "text " + mText);
4213                } else {
4214                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4215
4216                    if (ss.frozenWithFocus) {
4217                        createEditorIfNeeded();
4218                        mEditor.mFrozenWithFocus = true;
4219                    }
4220                }
4221            }
4222        }
4223
4224        if (ss.error != null) {
4225            final CharSequence error = ss.error;
4226            // Display the error later, after the first layout pass
4227            post(new Runnable() {
4228                public void run() {
4229                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4230                        setError(error);
4231                    }
4232                }
4233            });
4234        }
4235
4236        if (ss.editorState != null) {
4237            createEditorIfNeeded();
4238            mEditor.restoreInstanceState(ss.editorState);
4239        }
4240    }
4241
4242    /**
4243     * Control whether this text view saves its entire text contents when
4244     * freezing to an icicle, in addition to dynamic state such as cursor
4245     * position.  By default this is false, not saving the text.  Set to true
4246     * if the text in the text view is not being saved somewhere else in
4247     * persistent storage (such as in a content provider) so that if the
4248     * view is later thawed the user will not lose their data. For
4249     * {@link android.widget.EditText} it is always enabled, regardless of
4250     * the value of the attribute.
4251     *
4252     * @param freezesText Controls whether a frozen icicle should include the
4253     * entire text data: true to include it, false to not.
4254     *
4255     * @attr ref android.R.styleable#TextView_freezesText
4256     */
4257    @android.view.RemotableViewMethod
4258    public void setFreezesText(boolean freezesText) {
4259        mFreezesText = freezesText;
4260    }
4261
4262    /**
4263     * Return whether this text view is including its entire text contents
4264     * in frozen icicles. For {@link android.widget.EditText} it always returns true.
4265     *
4266     * @return Returns true if text is included, false if it isn't.
4267     *
4268     * @see #setFreezesText
4269     */
4270    public boolean getFreezesText() {
4271        return mFreezesText;
4272    }
4273
4274    ///////////////////////////////////////////////////////////////////////////
4275
4276    /**
4277     * Sets the Factory used to create new Editables.
4278     */
4279    public final void setEditableFactory(Editable.Factory factory) {
4280        mEditableFactory = factory;
4281        setText(mText);
4282    }
4283
4284    /**
4285     * Sets the Factory used to create new Spannables.
4286     */
4287    public final void setSpannableFactory(Spannable.Factory factory) {
4288        mSpannableFactory = factory;
4289        setText(mText);
4290    }
4291
4292    /**
4293     * Sets the string value of the TextView. TextView <em>does not</em> accept
4294     * HTML-like formatting, which you can do with text strings in XML resource files.
4295     * To style your strings, attach android.text.style.* objects to a
4296     * {@link android.text.SpannableString SpannableString}, or see the
4297     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4298     * Available Resource Types</a> documentation for an example of setting
4299     * formatted text in the XML resource file.
4300     *
4301     * @attr ref android.R.styleable#TextView_text
4302     */
4303    @android.view.RemotableViewMethod
4304    public final void setText(CharSequence text) {
4305        setText(text, mBufferType);
4306    }
4307
4308    /**
4309     * Like {@link #setText(CharSequence)},
4310     * except that the cursor position (if any) is retained in the new text.
4311     *
4312     * @param text The new text to place in the text view.
4313     *
4314     * @see #setText(CharSequence)
4315     */
4316    @android.view.RemotableViewMethod
4317    public final void setTextKeepState(CharSequence text) {
4318        setTextKeepState(text, mBufferType);
4319    }
4320
4321    /**
4322     * Sets the text that this TextView is to display (see
4323     * {@link #setText(CharSequence)}) and also sets whether it is stored
4324     * in a styleable/spannable buffer and whether it is editable.
4325     *
4326     * @attr ref android.R.styleable#TextView_text
4327     * @attr ref android.R.styleable#TextView_bufferType
4328     */
4329    public void setText(CharSequence text, BufferType type) {
4330        setText(text, type, true, 0);
4331
4332        if (mCharWrapper != null) {
4333            mCharWrapper.mChars = null;
4334        }
4335    }
4336
4337    private void setText(CharSequence text, BufferType type,
4338                         boolean notifyBefore, int oldlen) {
4339        if (text == null) {
4340            text = "";
4341        }
4342
4343        // If suggestions are not enabled, remove the suggestion spans from the text
4344        if (!isSuggestionsEnabled()) {
4345            text = removeSuggestionSpans(text);
4346        }
4347
4348        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4349
4350        if (text instanceof Spanned &&
4351            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4352            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4353                setHorizontalFadingEdgeEnabled(true);
4354                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4355            } else {
4356                setHorizontalFadingEdgeEnabled(false);
4357                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4358            }
4359            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4360        }
4361
4362        int n = mFilters.length;
4363        for (int i = 0; i < n; i++) {
4364            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4365            if (out != null) {
4366                text = out;
4367            }
4368        }
4369
4370        if (notifyBefore) {
4371            if (mText != null) {
4372                oldlen = mText.length();
4373                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4374            } else {
4375                sendBeforeTextChanged("", 0, 0, text.length());
4376            }
4377        }
4378
4379        boolean needEditableForNotification = false;
4380
4381        if (mListeners != null && mListeners.size() != 0) {
4382            needEditableForNotification = true;
4383        }
4384
4385        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4386                needEditableForNotification) {
4387            createEditorIfNeeded();
4388            mEditor.forgetUndoRedo();
4389            Editable t = mEditableFactory.newEditable(text);
4390            text = t;
4391            setFilters(t, mFilters);
4392            InputMethodManager imm = InputMethodManager.peekInstance();
4393            if (imm != null) imm.restartInput(this);
4394        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4395            text = mSpannableFactory.newSpannable(text);
4396        } else if (!(text instanceof CharWrapper)) {
4397            text = TextUtils.stringOrSpannedString(text);
4398        }
4399
4400        boolean hasClickableSpans = false;
4401        if (mAutoLinkMask != 0) {
4402            Spannable s2;
4403
4404            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4405                s2 = (Spannable) text;
4406            } else {
4407                s2 = mSpannableFactory.newSpannable(text);
4408            }
4409
4410            hasClickableSpans = Linkify.addLinks(s2, mAutoLinkMask);
4411            if (hasClickableSpans) {
4412                text = s2;
4413            }
4414        } else if (mLinksClickable && text instanceof Spanned) {
4415            ClickableSpan[] clickableSpans =
4416                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4417            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4418            if (hasClickableSpans && !(text instanceof Spannable)) {
4419                text = mSpannableFactory.newSpannable(text);
4420            }
4421        }
4422
4423        if (hasClickableSpans) {
4424            type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4425            /*
4426             * We must go ahead and set the text before changing the
4427             * movement method, because setMovementMethod() may call
4428             * setText() again to try to upgrade the buffer type.
4429             */
4430            mText = text;
4431
4432            // Do not change the movement method for text that supports text selection as it
4433            // would prevent an arbitrary cursor displacement.
4434            if (mLinksClickable && !textCanBeSelected()) {
4435                setMovementMethod(LinkMovementMethod.getInstance());
4436            }
4437        }
4438
4439        mBufferType = type;
4440        mText = text;
4441
4442        if (mTransformation == null) {
4443            mTransformed = text;
4444        } else {
4445            mTransformed = mTransformation.getTransformation(text, this);
4446        }
4447
4448        final int textLength = text.length();
4449
4450        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4451            Spannable sp = (Spannable) text;
4452
4453            // Remove any ChangeWatchers that might have come from other TextViews.
4454            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4455            final int count = watchers.length;
4456            for (int i = 0; i < count; i++) {
4457                sp.removeSpan(watchers[i]);
4458            }
4459
4460            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4461
4462            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4463                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4464
4465            if (mEditor != null) mEditor.addSpanWatchers(sp);
4466
4467            if (mTransformation != null) {
4468                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4469            }
4470
4471            if (mMovement != null) {
4472                mMovement.initialize(this, (Spannable) text);
4473
4474                /*
4475                 * Initializing the movement method will have set the
4476                 * selection, so reset mSelectionMoved to keep that from
4477                 * interfering with the normal on-focus selection-setting.
4478                 */
4479                if (mEditor != null) mEditor.mSelectionMoved = false;
4480            }
4481        }
4482
4483        if (mLayout != null) {
4484            checkForRelayout();
4485        }
4486
4487        sendOnTextChanged(text, 0, oldlen, textLength);
4488        onTextChanged(text, 0, oldlen, textLength);
4489
4490        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4491
4492        if (needEditableForNotification) {
4493            sendAfterTextChanged((Editable) text);
4494        }
4495
4496        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4497        if (mEditor != null) mEditor.prepareCursorControllers();
4498    }
4499
4500    /**
4501     * Sets the TextView to display the specified slice of the specified
4502     * char array.  You must promise that you will not change the contents
4503     * of the array except for right before another call to setText(),
4504     * since the TextView has no way to know that the text
4505     * has changed and that it needs to invalidate and re-layout.
4506     */
4507    public final void setText(char[] text, int start, int len) {
4508        int oldlen = 0;
4509
4510        if (start < 0 || len < 0 || start + len > text.length) {
4511            throw new IndexOutOfBoundsException(start + ", " + len);
4512        }
4513
4514        /*
4515         * We must do the before-notification here ourselves because if
4516         * the old text is a CharWrapper we destroy it before calling
4517         * into the normal path.
4518         */
4519        if (mText != null) {
4520            oldlen = mText.length();
4521            sendBeforeTextChanged(mText, 0, oldlen, len);
4522        } else {
4523            sendBeforeTextChanged("", 0, 0, len);
4524        }
4525
4526        if (mCharWrapper == null) {
4527            mCharWrapper = new CharWrapper(text, start, len);
4528        } else {
4529            mCharWrapper.set(text, start, len);
4530        }
4531
4532        setText(mCharWrapper, mBufferType, false, oldlen);
4533    }
4534
4535    /**
4536     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4537     * except that the cursor position (if any) is retained in the new text.
4538     *
4539     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4540     */
4541    public final void setTextKeepState(CharSequence text, BufferType type) {
4542        int start = getSelectionStart();
4543        int end = getSelectionEnd();
4544        int len = text.length();
4545
4546        setText(text, type);
4547
4548        if (start >= 0 || end >= 0) {
4549            if (mText instanceof Spannable) {
4550                Selection.setSelection((Spannable) mText,
4551                                       Math.max(0, Math.min(start, len)),
4552                                       Math.max(0, Math.min(end, len)));
4553            }
4554        }
4555    }
4556
4557    @android.view.RemotableViewMethod
4558    public final void setText(@StringRes int resid) {
4559        setText(getContext().getResources().getText(resid));
4560    }
4561
4562    public final void setText(@StringRes int resid, BufferType type) {
4563        setText(getContext().getResources().getText(resid), type);
4564    }
4565
4566    /**
4567     * Sets the text to be displayed when the text of the TextView is empty.
4568     * Null means to use the normal empty text. The hint does not currently
4569     * participate in determining the size of the view.
4570     *
4571     * @attr ref android.R.styleable#TextView_hint
4572     */
4573    @android.view.RemotableViewMethod
4574    public final void setHint(CharSequence hint) {
4575        mHint = TextUtils.stringOrSpannedString(hint);
4576
4577        if (mLayout != null) {
4578            checkForRelayout();
4579        }
4580
4581        if (mText.length() == 0) {
4582            invalidate();
4583        }
4584
4585        // Invalidate display list if hint is currently used
4586        if (mEditor != null && mText.length() == 0 && mHint != null) {
4587            mEditor.invalidateTextDisplayList();
4588        }
4589    }
4590
4591    /**
4592     * Sets the text to be displayed when the text of the TextView is empty,
4593     * from a resource.
4594     *
4595     * @attr ref android.R.styleable#TextView_hint
4596     */
4597    @android.view.RemotableViewMethod
4598    public final void setHint(@StringRes int resid) {
4599        setHint(getContext().getResources().getText(resid));
4600    }
4601
4602    /**
4603     * Returns the hint that is displayed when the text of the TextView
4604     * is empty.
4605     *
4606     * @attr ref android.R.styleable#TextView_hint
4607     */
4608    @ViewDebug.CapturedViewProperty
4609    public CharSequence getHint() {
4610        return mHint;
4611    }
4612
4613    boolean isSingleLine() {
4614        return mSingleLine;
4615    }
4616
4617    private static boolean isMultilineInputType(int type) {
4618        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4619            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4620    }
4621
4622    /**
4623     * Removes the suggestion spans.
4624     */
4625    CharSequence removeSuggestionSpans(CharSequence text) {
4626       if (text instanceof Spanned) {
4627           Spannable spannable;
4628           if (text instanceof Spannable) {
4629               spannable = (Spannable) text;
4630           } else {
4631               spannable = new SpannableString(text);
4632               text = spannable;
4633           }
4634
4635           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4636           for (int i = 0; i < spans.length; i++) {
4637               spannable.removeSpan(spans[i]);
4638           }
4639       }
4640       return text;
4641    }
4642
4643    /**
4644     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4645     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4646     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4647     * then a soft keyboard will not be displayed for this text view.
4648     *
4649     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4650     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4651     * type.
4652     *
4653     * @see #getInputType()
4654     * @see #setRawInputType(int)
4655     * @see android.text.InputType
4656     * @attr ref android.R.styleable#TextView_inputType
4657     */
4658    public void setInputType(int type) {
4659        final boolean wasPassword = isPasswordInputType(getInputType());
4660        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4661        setInputType(type, false);
4662        final boolean isPassword = isPasswordInputType(type);
4663        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4664        boolean forceUpdate = false;
4665        if (isPassword) {
4666            setTransformationMethod(PasswordTransformationMethod.getInstance());
4667            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4668        } else if (isVisiblePassword) {
4669            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4670                forceUpdate = true;
4671            }
4672            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4673        } else if (wasPassword || wasVisiblePassword) {
4674            // not in password mode, clean up typeface and transformation
4675            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4676            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4677                forceUpdate = true;
4678            }
4679        }
4680
4681        boolean singleLine = !isMultilineInputType(type);
4682
4683        // We need to update the single line mode if it has changed or we
4684        // were previously in password mode.
4685        if (mSingleLine != singleLine || forceUpdate) {
4686            // Change single line mode, but only change the transformation if
4687            // we are not in password mode.
4688            applySingleLine(singleLine, !isPassword, true);
4689        }
4690
4691        if (!isSuggestionsEnabled()) {
4692            mText = removeSuggestionSpans(mText);
4693        }
4694
4695        InputMethodManager imm = InputMethodManager.peekInstance();
4696        if (imm != null) imm.restartInput(this);
4697    }
4698
4699    /**
4700     * It would be better to rely on the input type for everything. A password inputType should have
4701     * a password transformation. We should hence use isPasswordInputType instead of this method.
4702     *
4703     * We should:
4704     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4705     * would install the correct transformation).
4706     * - Refuse the installation of a non-password transformation in setTransformation if the input
4707     * type is password.
4708     *
4709     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4710     * is useful since it matches what the user can see (obfuscated text or not).
4711     *
4712     * @return true if the current transformation method is of the password type.
4713     */
4714    boolean hasPasswordTransformationMethod() {
4715        return mTransformation instanceof PasswordTransformationMethod;
4716    }
4717
4718    private static boolean isPasswordInputType(int inputType) {
4719        final int variation =
4720                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4721        return variation
4722                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4723                || variation
4724                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4725                || variation
4726                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4727    }
4728
4729    private static boolean isVisiblePasswordInputType(int inputType) {
4730        final int variation =
4731                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4732        return variation
4733                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4734    }
4735
4736    /**
4737     * Directly change the content type integer of the text view, without
4738     * modifying any other state.
4739     * @see #setInputType(int)
4740     * @see android.text.InputType
4741     * @attr ref android.R.styleable#TextView_inputType
4742     */
4743    public void setRawInputType(int type) {
4744        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4745        createEditorIfNeeded();
4746        mEditor.mInputType = type;
4747    }
4748
4749    private void setInputType(int type, boolean direct) {
4750        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4751        KeyListener input;
4752        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4753            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4754            TextKeyListener.Capitalize cap;
4755            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4756                cap = TextKeyListener.Capitalize.CHARACTERS;
4757            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4758                cap = TextKeyListener.Capitalize.WORDS;
4759            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4760                cap = TextKeyListener.Capitalize.SENTENCES;
4761            } else {
4762                cap = TextKeyListener.Capitalize.NONE;
4763            }
4764            input = TextKeyListener.getInstance(autotext, cap);
4765        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4766            input = DigitsKeyListener.getInstance(
4767                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4768                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4769        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4770            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4771                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4772                    input = DateKeyListener.getInstance();
4773                    break;
4774                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4775                    input = TimeKeyListener.getInstance();
4776                    break;
4777                default:
4778                    input = DateTimeKeyListener.getInstance();
4779                    break;
4780            }
4781        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4782            input = DialerKeyListener.getInstance();
4783        } else {
4784            input = TextKeyListener.getInstance();
4785        }
4786        setRawInputType(type);
4787        if (direct) {
4788            createEditorIfNeeded();
4789            mEditor.mKeyListener = input;
4790        } else {
4791            setKeyListenerOnly(input);
4792        }
4793    }
4794
4795    /**
4796     * Get the type of the editable content.
4797     *
4798     * @see #setInputType(int)
4799     * @see android.text.InputType
4800     */
4801    public int getInputType() {
4802        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4803    }
4804
4805    /**
4806     * Change the editor type integer associated with the text view, which
4807     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4808     * has focus.
4809     * @see #getImeOptions
4810     * @see android.view.inputmethod.EditorInfo
4811     * @attr ref android.R.styleable#TextView_imeOptions
4812     */
4813    public void setImeOptions(int imeOptions) {
4814        createEditorIfNeeded();
4815        mEditor.createInputContentTypeIfNeeded();
4816        mEditor.mInputContentType.imeOptions = imeOptions;
4817    }
4818
4819    /**
4820     * Get the type of the IME editor.
4821     *
4822     * @see #setImeOptions(int)
4823     * @see android.view.inputmethod.EditorInfo
4824     */
4825    public int getImeOptions() {
4826        return mEditor != null && mEditor.mInputContentType != null
4827                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4828    }
4829
4830    /**
4831     * Change the custom IME action associated with the text view, which
4832     * will be reported to an IME with {@link EditorInfo#actionLabel}
4833     * and {@link EditorInfo#actionId} when it has focus.
4834     * @see #getImeActionLabel
4835     * @see #getImeActionId
4836     * @see android.view.inputmethod.EditorInfo
4837     * @attr ref android.R.styleable#TextView_imeActionLabel
4838     * @attr ref android.R.styleable#TextView_imeActionId
4839     */
4840    public void setImeActionLabel(CharSequence label, int actionId) {
4841        createEditorIfNeeded();
4842        mEditor.createInputContentTypeIfNeeded();
4843        mEditor.mInputContentType.imeActionLabel = label;
4844        mEditor.mInputContentType.imeActionId = actionId;
4845    }
4846
4847    /**
4848     * Get the IME action label previous set with {@link #setImeActionLabel}.
4849     *
4850     * @see #setImeActionLabel
4851     * @see android.view.inputmethod.EditorInfo
4852     */
4853    public CharSequence getImeActionLabel() {
4854        return mEditor != null && mEditor.mInputContentType != null
4855                ? mEditor.mInputContentType.imeActionLabel : null;
4856    }
4857
4858    /**
4859     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4860     *
4861     * @see #setImeActionLabel
4862     * @see android.view.inputmethod.EditorInfo
4863     */
4864    public int getImeActionId() {
4865        return mEditor != null && mEditor.mInputContentType != null
4866                ? mEditor.mInputContentType.imeActionId : 0;
4867    }
4868
4869    /**
4870     * Set a special listener to be called when an action is performed
4871     * on the text view.  This will be called when the enter key is pressed,
4872     * or when an action supplied to the IME is selected by the user.  Setting
4873     * this means that the normal hard key event will not insert a newline
4874     * into the text view, even if it is multi-line; holding down the ALT
4875     * modifier will, however, allow the user to insert a newline character.
4876     */
4877    public void setOnEditorActionListener(OnEditorActionListener l) {
4878        createEditorIfNeeded();
4879        mEditor.createInputContentTypeIfNeeded();
4880        mEditor.mInputContentType.onEditorActionListener = l;
4881    }
4882
4883    /**
4884     * Called when an attached input method calls
4885     * {@link InputConnection#performEditorAction(int)
4886     * InputConnection.performEditorAction()}
4887     * for this text view.  The default implementation will call your action
4888     * listener supplied to {@link #setOnEditorActionListener}, or perform
4889     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4890     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4891     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4892     * EditorInfo.IME_ACTION_DONE}.
4893     *
4894     * <p>For backwards compatibility, if no IME options have been set and the
4895     * text view would not normally advance focus on enter, then
4896     * the NEXT and DONE actions received here will be turned into an enter
4897     * key down/up pair to go through the normal key handling.
4898     *
4899     * @param actionCode The code of the action being performed.
4900     *
4901     * @see #setOnEditorActionListener
4902     */
4903    public void onEditorAction(int actionCode) {
4904        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4905        if (ict != null) {
4906            if (ict.onEditorActionListener != null) {
4907                if (ict.onEditorActionListener.onEditorAction(this,
4908                        actionCode, null)) {
4909                    return;
4910                }
4911            }
4912
4913            // This is the handling for some default action.
4914            // Note that for backwards compatibility we don't do this
4915            // default handling if explicit ime options have not been given,
4916            // instead turning this into the normal enter key codes that an
4917            // app may be expecting.
4918            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4919                View v = focusSearch(FOCUS_FORWARD);
4920                if (v != null) {
4921                    if (!v.requestFocus(FOCUS_FORWARD)) {
4922                        throw new IllegalStateException("focus search returned a view " +
4923                                "that wasn't able to take focus!");
4924                    }
4925                }
4926                return;
4927
4928            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4929                View v = focusSearch(FOCUS_BACKWARD);
4930                if (v != null) {
4931                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4932                        throw new IllegalStateException("focus search returned a view " +
4933                                "that wasn't able to take focus!");
4934                    }
4935                }
4936                return;
4937
4938            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4939                InputMethodManager imm = InputMethodManager.peekInstance();
4940                if (imm != null && imm.isActive(this)) {
4941                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4942                }
4943                return;
4944            }
4945        }
4946
4947        ViewRootImpl viewRootImpl = getViewRootImpl();
4948        if (viewRootImpl != null) {
4949            long eventTime = SystemClock.uptimeMillis();
4950            viewRootImpl.dispatchKeyFromIme(
4951                    new KeyEvent(eventTime, eventTime,
4952                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4953                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4954                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4955                    | KeyEvent.FLAG_EDITOR_ACTION));
4956            viewRootImpl.dispatchKeyFromIme(
4957                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4958                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4959                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4960                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4961                    | KeyEvent.FLAG_EDITOR_ACTION));
4962        }
4963    }
4964
4965    /**
4966     * Set the private content type of the text, which is the
4967     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4968     * field that will be filled in when creating an input connection.
4969     *
4970     * @see #getPrivateImeOptions()
4971     * @see EditorInfo#privateImeOptions
4972     * @attr ref android.R.styleable#TextView_privateImeOptions
4973     */
4974    public void setPrivateImeOptions(String type) {
4975        createEditorIfNeeded();
4976        mEditor.createInputContentTypeIfNeeded();
4977        mEditor.mInputContentType.privateImeOptions = type;
4978    }
4979
4980    /**
4981     * Get the private type of the content.
4982     *
4983     * @see #setPrivateImeOptions(String)
4984     * @see EditorInfo#privateImeOptions
4985     */
4986    public String getPrivateImeOptions() {
4987        return mEditor != null && mEditor.mInputContentType != null
4988                ? mEditor.mInputContentType.privateImeOptions : null;
4989    }
4990
4991    /**
4992     * Set the extra input data of the text, which is the
4993     * {@link EditorInfo#extras TextBoxAttribute.extras}
4994     * Bundle that will be filled in when creating an input connection.  The
4995     * given integer is the resource ID of an XML resource holding an
4996     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4997     *
4998     * @see #getInputExtras(boolean)
4999     * @see EditorInfo#extras
5000     * @attr ref android.R.styleable#TextView_editorExtras
5001     */
5002    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
5003        createEditorIfNeeded();
5004        XmlResourceParser parser = getResources().getXml(xmlResId);
5005        mEditor.createInputContentTypeIfNeeded();
5006        mEditor.mInputContentType.extras = new Bundle();
5007        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
5008    }
5009
5010    /**
5011     * Retrieve the input extras currently associated with the text view, which
5012     * can be viewed as well as modified.
5013     *
5014     * @param create If true, the extras will be created if they don't already
5015     * exist.  Otherwise, null will be returned if none have been created.
5016     * @see #setInputExtras(int)
5017     * @see EditorInfo#extras
5018     * @attr ref android.R.styleable#TextView_editorExtras
5019     */
5020    public Bundle getInputExtras(boolean create) {
5021        if (mEditor == null && !create) return null;
5022        createEditorIfNeeded();
5023        if (mEditor.mInputContentType == null) {
5024            if (!create) return null;
5025            mEditor.createInputContentTypeIfNeeded();
5026        }
5027        if (mEditor.mInputContentType.extras == null) {
5028            if (!create) return null;
5029            mEditor.mInputContentType.extras = new Bundle();
5030        }
5031        return mEditor.mInputContentType.extras;
5032    }
5033
5034    /**
5035     * Change "hint" locales associated with the text view, which will be reported to an IME with
5036     * {@link EditorInfo#hintLocales} when it has focus.
5037     *
5038     * <p><strong>Note:</strong> If you want new "hint" to take effect immediately you need to
5039     * call {@link InputMethodManager#restartInput(View)}.</p>
5040     * @param hintLocales List of the languages that the user is supposed to switch to no matter
5041     * what input method subtype is currently used. Set {@code null} to clear the current "hint".
5042     * @see #getImeHIntLocales()
5043     * @see android.view.inputmethod.EditorInfo#hintLocales
5044     */
5045    public void setImeHintLocales(@Nullable LocaleList hintLocales) {
5046        createEditorIfNeeded();
5047        mEditor.createInputContentTypeIfNeeded();
5048        mEditor.mInputContentType.imeHintLocales = hintLocales;
5049    }
5050
5051    /**
5052     * @return The current languages list "hint". {@code null} when no "hint" is available.
5053     * @see #setImeHintLocales(LocaleList)
5054     * @see android.view.inputmethod.EditorInfo#hintLocales
5055     */
5056    @Nullable
5057    public LocaleList getImeHintLocales() {
5058        if (mEditor == null) { return null; }
5059        if (mEditor.mInputContentType == null) { return null; }
5060        return mEditor.mInputContentType.imeHintLocales;
5061    }
5062
5063    /**
5064     * Returns the error message that was set to be displayed with
5065     * {@link #setError}, or <code>null</code> if no error was set
5066     * or if it the error was cleared by the widget after user input.
5067     */
5068    public CharSequence getError() {
5069        return mEditor == null ? null : mEditor.mError;
5070    }
5071
5072    /**
5073     * Sets the right-hand compound drawable of the TextView to the "error"
5074     * icon and sets an error message that will be displayed in a popup when
5075     * the TextView has focus.  The icon and error message will be reset to
5076     * null when any key events cause changes to the TextView's text.  If the
5077     * <code>error</code> is <code>null</code>, the error message and icon
5078     * will be cleared.
5079     */
5080    @android.view.RemotableViewMethod
5081    public void setError(CharSequence error) {
5082        if (error == null) {
5083            setError(null, null);
5084        } else {
5085            Drawable dr = getContext().getDrawable(
5086                    com.android.internal.R.drawable.indicator_input_error);
5087
5088            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5089            setError(error, dr);
5090        }
5091    }
5092
5093    /**
5094     * Sets the right-hand compound drawable of the TextView to the specified
5095     * icon and sets an error message that will be displayed in a popup when
5096     * the TextView has focus.  The icon and error message will be reset to
5097     * null when any key events cause changes to the TextView's text.  The
5098     * drawable must already have had {@link Drawable#setBounds} set on it.
5099     * If the <code>error</code> is <code>null</code>, the error message will
5100     * be cleared (and you should provide a <code>null</code> icon as well).
5101     */
5102    public void setError(CharSequence error, Drawable icon) {
5103        createEditorIfNeeded();
5104        mEditor.setError(error, icon);
5105        notifyViewAccessibilityStateChangedIfNeeded(
5106                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5107    }
5108
5109    @Override
5110    protected boolean setFrame(int l, int t, int r, int b) {
5111        boolean result = super.setFrame(l, t, r, b);
5112
5113        if (mEditor != null) mEditor.setFrame();
5114
5115        restartMarqueeIfNeeded();
5116
5117        return result;
5118    }
5119
5120    private void restartMarqueeIfNeeded() {
5121        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5122            mRestartMarquee = false;
5123            startMarquee();
5124        }
5125    }
5126
5127    /**
5128     * Sets the list of input filters that will be used if the buffer is
5129     * Editable. Has no effect otherwise.
5130     *
5131     * @attr ref android.R.styleable#TextView_maxLength
5132     */
5133    public void setFilters(InputFilter[] filters) {
5134        if (filters == null) {
5135            throw new IllegalArgumentException();
5136        }
5137
5138        mFilters = filters;
5139
5140        if (mText instanceof Editable) {
5141            setFilters((Editable) mText, filters);
5142        }
5143    }
5144
5145    /**
5146     * Sets the list of input filters on the specified Editable,
5147     * and includes mInput in the list if it is an InputFilter.
5148     */
5149    private void setFilters(Editable e, InputFilter[] filters) {
5150        if (mEditor != null) {
5151            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5152            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5153            int num = 0;
5154            if (undoFilter) num++;
5155            if (keyFilter) num++;
5156            if (num > 0) {
5157                InputFilter[] nf = new InputFilter[filters.length + num];
5158
5159                System.arraycopy(filters, 0, nf, 0, filters.length);
5160                num = 0;
5161                if (undoFilter) {
5162                    nf[filters.length] = mEditor.mUndoInputFilter;
5163                    num++;
5164                }
5165                if (keyFilter) {
5166                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5167                }
5168
5169                e.setFilters(nf);
5170                return;
5171            }
5172        }
5173        e.setFilters(filters);
5174    }
5175
5176    /**
5177     * Returns the current list of input filters.
5178     *
5179     * @attr ref android.R.styleable#TextView_maxLength
5180     */
5181    public InputFilter[] getFilters() {
5182        return mFilters;
5183    }
5184
5185    /////////////////////////////////////////////////////////////////////////
5186
5187    private int getBoxHeight(Layout l) {
5188        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5189        int padding = (l == mHintLayout) ?
5190                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5191                getExtendedPaddingTop() + getExtendedPaddingBottom();
5192        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5193    }
5194
5195    int getVerticalOffset(boolean forceNormal) {
5196        int voffset = 0;
5197        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5198
5199        Layout l = mLayout;
5200        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5201            l = mHintLayout;
5202        }
5203
5204        if (gravity != Gravity.TOP) {
5205            int boxht = getBoxHeight(l);
5206            int textht = l.getHeight();
5207
5208            if (textht < boxht) {
5209                if (gravity == Gravity.BOTTOM)
5210                    voffset = boxht - textht;
5211                else // (gravity == Gravity.CENTER_VERTICAL)
5212                    voffset = (boxht - textht) >> 1;
5213            }
5214        }
5215        return voffset;
5216    }
5217
5218    private int getBottomVerticalOffset(boolean forceNormal) {
5219        int voffset = 0;
5220        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5221
5222        Layout l = mLayout;
5223        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5224            l = mHintLayout;
5225        }
5226
5227        if (gravity != Gravity.BOTTOM) {
5228            int boxht = getBoxHeight(l);
5229            int textht = l.getHeight();
5230
5231            if (textht < boxht) {
5232                if (gravity == Gravity.TOP)
5233                    voffset = boxht - textht;
5234                else // (gravity == Gravity.CENTER_VERTICAL)
5235                    voffset = (boxht - textht) >> 1;
5236            }
5237        }
5238        return voffset;
5239    }
5240
5241    void invalidateCursorPath() {
5242        if (mHighlightPathBogus) {
5243            invalidateCursor();
5244        } else {
5245            final int horizontalPadding = getCompoundPaddingLeft();
5246            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5247
5248            if (mEditor.mCursorCount == 0) {
5249                synchronized (TEMP_RECTF) {
5250                    /*
5251                     * The reason for this concern about the thickness of the
5252                     * cursor and doing the floor/ceil on the coordinates is that
5253                     * some EditTexts (notably textfields in the Browser) have
5254                     * anti-aliased text where not all the characters are
5255                     * necessarily at integer-multiple locations.  This should
5256                     * make sure the entire cursor gets invalidated instead of
5257                     * sometimes missing half a pixel.
5258                     */
5259                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5260                    if (thick < 1.0f) {
5261                        thick = 1.0f;
5262                    }
5263
5264                    thick /= 2.0f;
5265
5266                    // mHighlightPath is guaranteed to be non null at that point.
5267                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5268
5269                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5270                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5271                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5272                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5273                }
5274            } else {
5275                for (int i = 0; i < mEditor.mCursorCount; i++) {
5276                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5277                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5278                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5279                }
5280            }
5281        }
5282    }
5283
5284    void invalidateCursor() {
5285        int where = getSelectionEnd();
5286
5287        invalidateCursor(where, where, where);
5288    }
5289
5290    private void invalidateCursor(int a, int b, int c) {
5291        if (a >= 0 || b >= 0 || c >= 0) {
5292            int start = Math.min(Math.min(a, b), c);
5293            int end = Math.max(Math.max(a, b), c);
5294            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5295        }
5296    }
5297
5298    /**
5299     * Invalidates the region of text enclosed between the start and end text offsets.
5300     */
5301    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5302        if (mLayout == null) {
5303            invalidate();
5304        } else {
5305                int lineStart = mLayout.getLineForOffset(start);
5306                int top = mLayout.getLineTop(lineStart);
5307
5308                // This is ridiculous, but the descent from the line above
5309                // can hang down into the line we really want to redraw,
5310                // so we have to invalidate part of the line above to make
5311                // sure everything that needs to be redrawn really is.
5312                // (But not the whole line above, because that would cause
5313                // the same problem with the descenders on the line above it!)
5314                if (lineStart > 0) {
5315                    top -= mLayout.getLineDescent(lineStart - 1);
5316                }
5317
5318                int lineEnd;
5319
5320                if (start == end)
5321                    lineEnd = lineStart;
5322                else
5323                    lineEnd = mLayout.getLineForOffset(end);
5324
5325                int bottom = mLayout.getLineBottom(lineEnd);
5326
5327                // mEditor can be null in case selection is set programmatically.
5328                if (invalidateCursor && mEditor != null) {
5329                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5330                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5331                        top = Math.min(top, bounds.top);
5332                        bottom = Math.max(bottom, bounds.bottom);
5333                    }
5334                }
5335
5336                final int compoundPaddingLeft = getCompoundPaddingLeft();
5337                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5338
5339                int left, right;
5340                if (lineStart == lineEnd && !invalidateCursor) {
5341                    left = (int) mLayout.getPrimaryHorizontal(start);
5342                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5343                    left += compoundPaddingLeft;
5344                    right += compoundPaddingLeft;
5345                } else {
5346                    // Rectangle bounding box when the region spans several lines
5347                    left = compoundPaddingLeft;
5348                    right = getWidth() - getCompoundPaddingRight();
5349                }
5350
5351                invalidate(mScrollX + left, verticalPadding + top,
5352                        mScrollX + right, verticalPadding + bottom);
5353        }
5354    }
5355
5356    private void registerForPreDraw() {
5357        if (!mPreDrawRegistered) {
5358            getViewTreeObserver().addOnPreDrawListener(this);
5359            mPreDrawRegistered = true;
5360        }
5361    }
5362
5363    private void unregisterForPreDraw() {
5364        getViewTreeObserver().removeOnPreDrawListener(this);
5365        mPreDrawRegistered = false;
5366        mPreDrawListenerDetached = false;
5367    }
5368
5369    /**
5370     * {@inheritDoc}
5371     */
5372    public boolean onPreDraw() {
5373        if (mLayout == null) {
5374            assumeLayout();
5375        }
5376
5377        if (mMovement != null) {
5378            /* This code also provides auto-scrolling when a cursor is moved using a
5379             * CursorController (insertion point or selection limits).
5380             * For selection, ensure start or end is visible depending on controller's state.
5381             */
5382            int curs = getSelectionEnd();
5383            // Do not create the controller if it is not already created.
5384            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5385                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5386                curs = getSelectionStart();
5387            }
5388
5389            /*
5390             * TODO: This should really only keep the end in view if
5391             * it already was before the text changed.  I'm not sure
5392             * of a good way to tell from here if it was.
5393             */
5394            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5395                curs = mText.length();
5396            }
5397
5398            if (curs >= 0) {
5399                bringPointIntoView(curs);
5400            }
5401        } else {
5402            bringTextIntoView();
5403        }
5404
5405        // This has to be checked here since:
5406        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5407        //   a screen rotation) since layout is not yet initialized at that point.
5408        if (mEditor != null && mEditor.mCreatedWithASelection) {
5409            mEditor.refreshTextActionMode();
5410            mEditor.mCreatedWithASelection = false;
5411        }
5412
5413        unregisterForPreDraw();
5414
5415        return true;
5416    }
5417
5418    @Override
5419    protected void onAttachedToWindow() {
5420        super.onAttachedToWindow();
5421
5422        mTemporaryDetach = false;
5423
5424        if (mEditor != null) mEditor.onAttachedToWindow();
5425
5426        if (mPreDrawListenerDetached) {
5427            getViewTreeObserver().addOnPreDrawListener(this);
5428            mPreDrawListenerDetached = false;
5429        }
5430    }
5431
5432    /** @hide */
5433    @Override
5434    protected void onDetachedFromWindowInternal() {
5435        if (mPreDrawRegistered) {
5436            getViewTreeObserver().removeOnPreDrawListener(this);
5437            mPreDrawListenerDetached = true;
5438        }
5439
5440        resetResolvedDrawables();
5441
5442        if (mEditor != null) mEditor.onDetachedFromWindow();
5443
5444        super.onDetachedFromWindowInternal();
5445    }
5446
5447    @Override
5448    public void onScreenStateChanged(int screenState) {
5449        super.onScreenStateChanged(screenState);
5450        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5451    }
5452
5453    @Override
5454    protected boolean isPaddingOffsetRequired() {
5455        return mShadowRadius != 0 || mDrawables != null;
5456    }
5457
5458    @Override
5459    protected int getLeftPaddingOffset() {
5460        return getCompoundPaddingLeft() - mPaddingLeft +
5461                (int) Math.min(0, mShadowDx - mShadowRadius);
5462    }
5463
5464    @Override
5465    protected int getTopPaddingOffset() {
5466        return (int) Math.min(0, mShadowDy - mShadowRadius);
5467    }
5468
5469    @Override
5470    protected int getBottomPaddingOffset() {
5471        return (int) Math.max(0, mShadowDy + mShadowRadius);
5472    }
5473
5474    @Override
5475    protected int getRightPaddingOffset() {
5476        return -(getCompoundPaddingRight() - mPaddingRight) +
5477                (int) Math.max(0, mShadowDx + mShadowRadius);
5478    }
5479
5480    @Override
5481    protected boolean verifyDrawable(@NonNull Drawable who) {
5482        final boolean verified = super.verifyDrawable(who);
5483        if (!verified && mDrawables != null) {
5484            for (Drawable dr : mDrawables.mShowing) {
5485                if (who == dr) {
5486                    return true;
5487                }
5488            }
5489        }
5490        return verified;
5491    }
5492
5493    @Override
5494    public void jumpDrawablesToCurrentState() {
5495        super.jumpDrawablesToCurrentState();
5496        if (mDrawables != null) {
5497            for (Drawable dr : mDrawables.mShowing) {
5498                if (dr != null) {
5499                    dr.jumpToCurrentState();
5500                }
5501            }
5502        }
5503    }
5504
5505    @Override
5506    public void invalidateDrawable(@NonNull Drawable drawable) {
5507        boolean handled = false;
5508
5509        if (verifyDrawable(drawable)) {
5510            final Rect dirty = drawable.getBounds();
5511            int scrollX = mScrollX;
5512            int scrollY = mScrollY;
5513
5514            // IMPORTANT: The coordinates below are based on the coordinates computed
5515            // for each compound drawable in onDraw(). Make sure to update each section
5516            // accordingly.
5517            final TextView.Drawables drawables = mDrawables;
5518            if (drawables != null) {
5519                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5520                    final int compoundPaddingTop = getCompoundPaddingTop();
5521                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5522                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5523
5524                    scrollX += mPaddingLeft;
5525                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5526                    handled = true;
5527                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5528                    final int compoundPaddingTop = getCompoundPaddingTop();
5529                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5530                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5531
5532                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5533                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5534                    handled = true;
5535                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5536                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5537                    final int compoundPaddingRight = getCompoundPaddingRight();
5538                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5539
5540                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5541                    scrollY += mPaddingTop;
5542                    handled = true;
5543                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5544                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5545                    final int compoundPaddingRight = getCompoundPaddingRight();
5546                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5547
5548                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5549                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5550                    handled = true;
5551                }
5552            }
5553
5554            if (handled) {
5555                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5556                        dirty.right + scrollX, dirty.bottom + scrollY);
5557            }
5558        }
5559
5560        if (!handled) {
5561            super.invalidateDrawable(drawable);
5562        }
5563    }
5564
5565    @Override
5566    public boolean hasOverlappingRendering() {
5567        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5568        return ((getBackground() != null && getBackground().getCurrent() != null)
5569                || mText instanceof Spannable || hasSelection()
5570                || isHorizontalFadingEdgeEnabled());
5571    }
5572
5573    /**
5574     *
5575     * Returns the state of the {@code textIsSelectable} flag (See
5576     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5577     * to allow users to select and copy text in a non-editable TextView, the content of an
5578     * {@link EditText} can always be selected, independently of the value of this flag.
5579     * <p>
5580     *
5581     * @return True if the text displayed in this TextView can be selected by the user.
5582     *
5583     * @attr ref android.R.styleable#TextView_textIsSelectable
5584     */
5585    public boolean isTextSelectable() {
5586        return mEditor == null ? false : mEditor.mTextIsSelectable;
5587    }
5588
5589    /**
5590     * Sets whether the content of this view is selectable by the user. The default is
5591     * {@code false}, meaning that the content is not selectable.
5592     * <p>
5593     * When you use a TextView to display a useful piece of information to the user (such as a
5594     * contact's address), make it selectable, so that the user can select and copy its
5595     * content. You can also use set the XML attribute
5596     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5597     * <p>
5598     * When you call this method to set the value of {@code textIsSelectable}, it sets
5599     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5600     * and {@code longClickable} to the same value. These flags correspond to the attributes
5601     * {@link android.R.styleable#View_focusable android:focusable},
5602     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5603     * {@link android.R.styleable#View_clickable android:clickable}, and
5604     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5605     * flags to a state you had set previously, call one or more of the following methods:
5606     * {@link #setFocusable(boolean) setFocusable()},
5607     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5608     * {@link #setClickable(boolean) setClickable()} or
5609     * {@link #setLongClickable(boolean) setLongClickable()}.
5610     *
5611     * @param selectable Whether the content of this TextView should be selectable.
5612     */
5613    public void setTextIsSelectable(boolean selectable) {
5614        if (!selectable && mEditor == null) return; // false is default value with no edit data
5615
5616        createEditorIfNeeded();
5617        if (mEditor.mTextIsSelectable == selectable) return;
5618
5619        mEditor.mTextIsSelectable = selectable;
5620        setFocusableInTouchMode(selectable);
5621        setFocusable(selectable);
5622        setClickable(selectable);
5623        setLongClickable(selectable);
5624
5625        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5626
5627        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5628        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5629
5630        // Called by setText above, but safer in case of future code changes
5631        mEditor.prepareCursorControllers();
5632    }
5633
5634    @Override
5635    protected int[] onCreateDrawableState(int extraSpace) {
5636        final int[] drawableState;
5637
5638        if (mSingleLine) {
5639            drawableState = super.onCreateDrawableState(extraSpace);
5640        } else {
5641            drawableState = super.onCreateDrawableState(extraSpace + 1);
5642            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5643        }
5644
5645        if (isTextSelectable()) {
5646            // Disable pressed state, which was introduced when TextView was made clickable.
5647            // Prevents text color change.
5648            // setClickable(false) would have a similar effect, but it also disables focus changes
5649            // and long press actions, which are both needed by text selection.
5650            final int length = drawableState.length;
5651            for (int i = 0; i < length; i++) {
5652                if (drawableState[i] == R.attr.state_pressed) {
5653                    final int[] nonPressedState = new int[length - 1];
5654                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5655                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5656                    return nonPressedState;
5657                }
5658            }
5659        }
5660
5661        return drawableState;
5662    }
5663
5664    private Path getUpdatedHighlightPath() {
5665        Path highlight = null;
5666        Paint highlightPaint = mHighlightPaint;
5667
5668        final int selStart = getSelectionStart();
5669        final int selEnd = getSelectionEnd();
5670        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5671            if (selStart == selEnd) {
5672                if (mEditor != null && mEditor.isCursorVisible() &&
5673                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5674                        (2 * Editor.BLINK) < Editor.BLINK) {
5675                    if (mHighlightPathBogus) {
5676                        if (mHighlightPath == null) mHighlightPath = new Path();
5677                        mHighlightPath.reset();
5678                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5679                        mEditor.updateCursorsPositions();
5680                        mHighlightPathBogus = false;
5681                    }
5682
5683                    // XXX should pass to skin instead of drawing directly
5684                    highlightPaint.setColor(mCurTextColor);
5685                    highlightPaint.setStyle(Paint.Style.STROKE);
5686                    highlight = mHighlightPath;
5687                }
5688            } else {
5689                if (mHighlightPathBogus) {
5690                    if (mHighlightPath == null) mHighlightPath = new Path();
5691                    mHighlightPath.reset();
5692                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5693                    mHighlightPathBogus = false;
5694                }
5695
5696                // XXX should pass to skin instead of drawing directly
5697                highlightPaint.setColor(mHighlightColor);
5698                highlightPaint.setStyle(Paint.Style.FILL);
5699
5700                highlight = mHighlightPath;
5701            }
5702        }
5703        return highlight;
5704    }
5705
5706    /**
5707     * @hide
5708     */
5709    public int getHorizontalOffsetForDrawables() {
5710        return 0;
5711    }
5712
5713    @Override
5714    protected void onDraw(Canvas canvas) {
5715        restartMarqueeIfNeeded();
5716
5717        // Draw the background for this view
5718        super.onDraw(canvas);
5719
5720        final int compoundPaddingLeft = getCompoundPaddingLeft();
5721        final int compoundPaddingTop = getCompoundPaddingTop();
5722        final int compoundPaddingRight = getCompoundPaddingRight();
5723        final int compoundPaddingBottom = getCompoundPaddingBottom();
5724        final int scrollX = mScrollX;
5725        final int scrollY = mScrollY;
5726        final int right = mRight;
5727        final int left = mLeft;
5728        final int bottom = mBottom;
5729        final int top = mTop;
5730        final boolean isLayoutRtl = isLayoutRtl();
5731        final int offset = getHorizontalOffsetForDrawables();
5732        final int leftOffset = isLayoutRtl ? 0 : offset;
5733        final int rightOffset = isLayoutRtl ? offset : 0 ;
5734
5735        final Drawables dr = mDrawables;
5736        if (dr != null) {
5737            /*
5738             * Compound, not extended, because the icon is not clipped
5739             * if the text height is smaller.
5740             */
5741
5742            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5743            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5744
5745            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5746            // Make sure to update invalidateDrawable() when changing this code.
5747            if (dr.mShowing[Drawables.LEFT] != null) {
5748                canvas.save();
5749                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5750                                 scrollY + compoundPaddingTop +
5751                                 (vspace - dr.mDrawableHeightLeft) / 2);
5752                dr.mShowing[Drawables.LEFT].draw(canvas);
5753                canvas.restore();
5754            }
5755
5756            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5757            // Make sure to update invalidateDrawable() when changing this code.
5758            if (dr.mShowing[Drawables.RIGHT] != null) {
5759                canvas.save();
5760                canvas.translate(scrollX + right - left - mPaddingRight
5761                        - dr.mDrawableSizeRight - rightOffset,
5762                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5763                dr.mShowing[Drawables.RIGHT].draw(canvas);
5764                canvas.restore();
5765            }
5766
5767            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5768            // Make sure to update invalidateDrawable() when changing this code.
5769            if (dr.mShowing[Drawables.TOP] != null) {
5770                canvas.save();
5771                canvas.translate(scrollX + compoundPaddingLeft +
5772                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5773                dr.mShowing[Drawables.TOP].draw(canvas);
5774                canvas.restore();
5775            }
5776
5777            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5778            // Make sure to update invalidateDrawable() when changing this code.
5779            if (dr.mShowing[Drawables.BOTTOM] != null) {
5780                canvas.save();
5781                canvas.translate(scrollX + compoundPaddingLeft +
5782                        (hspace - dr.mDrawableWidthBottom) / 2,
5783                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5784                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5785                canvas.restore();
5786            }
5787        }
5788
5789        int color = mCurTextColor;
5790
5791        if (mLayout == null) {
5792            assumeLayout();
5793        }
5794
5795        Layout layout = mLayout;
5796
5797        if (mHint != null && mText.length() == 0) {
5798            if (mHintTextColor != null) {
5799                color = mCurHintTextColor;
5800            }
5801
5802            layout = mHintLayout;
5803        }
5804
5805        mTextPaint.setColor(color);
5806        mTextPaint.drawableState = getDrawableState();
5807
5808        canvas.save();
5809        /*  Would be faster if we didn't have to do this. Can we chop the
5810            (displayable) text so that we don't need to do this ever?
5811        */
5812
5813        int extendedPaddingTop = getExtendedPaddingTop();
5814        int extendedPaddingBottom = getExtendedPaddingBottom();
5815
5816        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5817        final int maxScrollY = mLayout.getHeight() - vspace;
5818
5819        float clipLeft = compoundPaddingLeft + scrollX;
5820        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5821        float clipRight = right - left - getCompoundPaddingRight() + scrollX;
5822        float clipBottom = bottom - top + scrollY -
5823                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5824
5825        if (mShadowRadius != 0) {
5826            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5827            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5828
5829            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5830            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5831        }
5832
5833        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5834
5835        int voffsetText = 0;
5836        int voffsetCursor = 0;
5837
5838        // translate in by our padding
5839        /* shortcircuit calling getVerticaOffset() */
5840        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5841            voffsetText = getVerticalOffset(false);
5842            voffsetCursor = getVerticalOffset(true);
5843        }
5844        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5845
5846        final int layoutDirection = getLayoutDirection();
5847        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5848        if (isMarqueeFadeEnabled()) {
5849            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5850                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5851                final int width = mRight - mLeft;
5852                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5853                final float dx = mLayout.getLineRight(0) - (width - padding);
5854                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5855            }
5856
5857            if (mMarquee != null && mMarquee.isRunning()) {
5858                final float dx = -mMarquee.getScroll();
5859                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5860            }
5861        }
5862
5863        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5864
5865        Path highlight = getUpdatedHighlightPath();
5866        if (mEditor != null) {
5867            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5868        } else {
5869            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5870        }
5871
5872        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5873            final float dx = mMarquee.getGhostOffset();
5874            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5875            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5876        }
5877
5878        canvas.restore();
5879    }
5880
5881    @Override
5882    public void getFocusedRect(Rect r) {
5883        if (mLayout == null) {
5884            super.getFocusedRect(r);
5885            return;
5886        }
5887
5888        int selEnd = getSelectionEnd();
5889        if (selEnd < 0) {
5890            super.getFocusedRect(r);
5891            return;
5892        }
5893
5894        int selStart = getSelectionStart();
5895        if (selStart < 0 || selStart >= selEnd) {
5896            int line = mLayout.getLineForOffset(selEnd);
5897            r.top = mLayout.getLineTop(line);
5898            r.bottom = mLayout.getLineBottom(line);
5899            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5900            r.right = r.left + 4;
5901        } else {
5902            int lineStart = mLayout.getLineForOffset(selStart);
5903            int lineEnd = mLayout.getLineForOffset(selEnd);
5904            r.top = mLayout.getLineTop(lineStart);
5905            r.bottom = mLayout.getLineBottom(lineEnd);
5906            if (lineStart == lineEnd) {
5907                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5908                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5909            } else {
5910                // Selection extends across multiple lines -- make the focused
5911                // rect cover the entire width.
5912                if (mHighlightPathBogus) {
5913                    if (mHighlightPath == null) mHighlightPath = new Path();
5914                    mHighlightPath.reset();
5915                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5916                    mHighlightPathBogus = false;
5917                }
5918                synchronized (TEMP_RECTF) {
5919                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5920                    r.left = (int)TEMP_RECTF.left-1;
5921                    r.right = (int)TEMP_RECTF.right+1;
5922                }
5923            }
5924        }
5925
5926        // Adjust for padding and gravity.
5927        int paddingLeft = getCompoundPaddingLeft();
5928        int paddingTop = getExtendedPaddingTop();
5929        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5930            paddingTop += getVerticalOffset(false);
5931        }
5932        r.offset(paddingLeft, paddingTop);
5933        int paddingBottom = getExtendedPaddingBottom();
5934        r.bottom += paddingBottom;
5935    }
5936
5937    /**
5938     * Return the number of lines of text, or 0 if the internal Layout has not
5939     * been built.
5940     */
5941    public int getLineCount() {
5942        return mLayout != null ? mLayout.getLineCount() : 0;
5943    }
5944
5945    /**
5946     * Return the baseline for the specified line (0...getLineCount() - 1)
5947     * If bounds is not null, return the top, left, right, bottom extents
5948     * of the specified line in it. If the internal Layout has not been built,
5949     * return 0 and set bounds to (0, 0, 0, 0)
5950     * @param line which line to examine (0..getLineCount() - 1)
5951     * @param bounds Optional. If not null, it returns the extent of the line
5952     * @return the Y-coordinate of the baseline
5953     */
5954    public int getLineBounds(int line, Rect bounds) {
5955        if (mLayout == null) {
5956            if (bounds != null) {
5957                bounds.set(0, 0, 0, 0);
5958            }
5959            return 0;
5960        }
5961        else {
5962            int baseline = mLayout.getLineBounds(line, bounds);
5963
5964            int voffset = getExtendedPaddingTop();
5965            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5966                voffset += getVerticalOffset(true);
5967            }
5968            if (bounds != null) {
5969                bounds.offset(getCompoundPaddingLeft(), voffset);
5970            }
5971            return baseline + voffset;
5972        }
5973    }
5974
5975    @Override
5976    public int getBaseline() {
5977        if (mLayout == null) {
5978            return super.getBaseline();
5979        }
5980
5981        return getBaselineOffset() + mLayout.getLineBaseline(0);
5982    }
5983
5984    int getBaselineOffset() {
5985        int voffset = 0;
5986        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5987            voffset = getVerticalOffset(true);
5988        }
5989
5990        if (isLayoutModeOptical(mParent)) {
5991            voffset -= getOpticalInsets().top;
5992        }
5993
5994        return getExtendedPaddingTop() + voffset;
5995    }
5996
5997    /**
5998     * @hide
5999     */
6000    @Override
6001    protected int getFadeTop(boolean offsetRequired) {
6002        if (mLayout == null) return 0;
6003
6004        int voffset = 0;
6005        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6006            voffset = getVerticalOffset(true);
6007        }
6008
6009        if (offsetRequired) voffset += getTopPaddingOffset();
6010
6011        return getExtendedPaddingTop() + voffset;
6012    }
6013
6014    /**
6015     * @hide
6016     */
6017    @Override
6018    protected int getFadeHeight(boolean offsetRequired) {
6019        return mLayout != null ? mLayout.getHeight() : 0;
6020    }
6021
6022    @Override
6023    public PointerIcon getPointerIcon(MotionEvent event, float x, float y) {
6024        if (mText instanceof Spannable && mLinksClickable) {
6025            final int offset = getOffsetForPosition(x, y);
6026            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
6027                    ClickableSpan.class);
6028            if (clickables.length > 0) {
6029                return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_HAND);
6030            }
6031        }
6032        if (isTextSelectable() || isTextEditable()) {
6033            return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_TEXT);
6034        }
6035        return super.getPointerIcon(event, x, y);
6036    }
6037
6038    @Override
6039    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
6040        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
6041        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
6042        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
6043        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
6044            return true;
6045        }
6046        return super.onKeyPreIme(keyCode, event);
6047    }
6048
6049    /**
6050     * @hide
6051     */
6052    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
6053        // Do nothing unless mEditor is in text action mode.
6054        if (mEditor == null || mEditor.mTextActionMode == null) {
6055            return false;
6056        }
6057
6058        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
6059            KeyEvent.DispatcherState state = getKeyDispatcherState();
6060            if (state != null) {
6061                state.startTracking(event, this);
6062            }
6063            return true;
6064        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6065            KeyEvent.DispatcherState state = getKeyDispatcherState();
6066            if (state != null) {
6067                state.handleUpEvent(event);
6068            }
6069            if (event.isTracking() && !event.isCanceled()) {
6070                stopTextActionMode();
6071                return true;
6072            }
6073        }
6074        return false;
6075    }
6076
6077    @Override
6078    public boolean onKeyDown(int keyCode, KeyEvent event) {
6079        final int which = doKeyDown(keyCode, event, null);
6080        if (which == KEY_EVENT_NOT_HANDLED) {
6081            return super.onKeyDown(keyCode, event);
6082        }
6083
6084        return true;
6085    }
6086
6087    @Override
6088    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6089        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6090        final int which = doKeyDown(keyCode, down, event);
6091        if (which == KEY_EVENT_NOT_HANDLED) {
6092            // Go through default dispatching.
6093            return super.onKeyMultiple(keyCode, repeatCount, event);
6094        }
6095        if (which == KEY_EVENT_HANDLED) {
6096            // Consumed the whole thing.
6097            return true;
6098        }
6099
6100        repeatCount--;
6101
6102        // We are going to dispatch the remaining events to either the input
6103        // or movement method.  To do this, we will just send a repeated stream
6104        // of down and up events until we have done the complete repeatCount.
6105        // It would be nice if those interfaces had an onKeyMultiple() method,
6106        // but adding that is a more complicated change.
6107        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6108        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6109            // mEditor and mEditor.mInput are not null from doKeyDown
6110            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6111            while (--repeatCount > 0) {
6112                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6113                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6114            }
6115            hideErrorIfUnchanged();
6116
6117        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6118            // mMovement is not null from doKeyDown
6119            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6120            while (--repeatCount > 0) {
6121                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6122                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6123            }
6124        }
6125
6126        return true;
6127    }
6128
6129    /**
6130     * Returns true if pressing ENTER in this field advances focus instead
6131     * of inserting the character.  This is true mostly in single-line fields,
6132     * but also in mail addresses and subjects which will display on multiple
6133     * lines but where it doesn't make sense to insert newlines.
6134     */
6135    private boolean shouldAdvanceFocusOnEnter() {
6136        if (getKeyListener() == null) {
6137            return false;
6138        }
6139
6140        if (mSingleLine) {
6141            return true;
6142        }
6143
6144        if (mEditor != null &&
6145                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6146            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6147            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6148                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6149                return true;
6150            }
6151        }
6152
6153        return false;
6154    }
6155
6156    /**
6157     * Returns true if pressing TAB in this field advances focus instead
6158     * of inserting the character.  Insert tabs only in multi-line editors.
6159     */
6160    private boolean shouldAdvanceFocusOnTab() {
6161        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6162                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6163            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6164            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6165                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6166                return false;
6167            }
6168        }
6169        return true;
6170    }
6171
6172    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6173        if (!isEnabled()) {
6174            return KEY_EVENT_NOT_HANDLED;
6175        }
6176
6177        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6178        // While this shouldn't be necessary because any time we're preventing default movement we
6179        // should be restricting the focus to remain within this view, thus we'll also receive
6180        // the key up event, occasionally key up events will get dropped and we don't want to
6181        // prevent the user from traversing out of this on the next key down.
6182        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6183            mPreventDefaultMovement = false;
6184        }
6185
6186        switch (keyCode) {
6187            case KeyEvent.KEYCODE_ENTER:
6188                if (event.hasNoModifiers()) {
6189                    // When mInputContentType is set, we know that we are
6190                    // running in a "modern" cupcake environment, so don't need
6191                    // to worry about the application trying to capture
6192                    // enter key events.
6193                    if (mEditor != null && mEditor.mInputContentType != null) {
6194                        // If there is an action listener, given them a
6195                        // chance to consume the event.
6196                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6197                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6198                                this, EditorInfo.IME_NULL, event)) {
6199                            mEditor.mInputContentType.enterDown = true;
6200                            // We are consuming the enter key for them.
6201                            return KEY_EVENT_HANDLED;
6202                        }
6203                    }
6204
6205                    // If our editor should move focus when enter is pressed, or
6206                    // this is a generated event from an IME action button, then
6207                    // don't let it be inserted into the text.
6208                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6209                            || shouldAdvanceFocusOnEnter()) {
6210                        if (hasOnClickListeners()) {
6211                            return KEY_EVENT_NOT_HANDLED;
6212                        }
6213                        return KEY_EVENT_HANDLED;
6214                    }
6215                }
6216                break;
6217
6218            case KeyEvent.KEYCODE_DPAD_CENTER:
6219                if (event.hasNoModifiers()) {
6220                    if (shouldAdvanceFocusOnEnter()) {
6221                        return KEY_EVENT_NOT_HANDLED;
6222                    }
6223                }
6224                break;
6225
6226            case KeyEvent.KEYCODE_TAB:
6227                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6228                    if (shouldAdvanceFocusOnTab()) {
6229                        return KEY_EVENT_NOT_HANDLED;
6230                    }
6231                }
6232                break;
6233
6234                // Has to be done on key down (and not on key up) to correctly be intercepted.
6235            case KeyEvent.KEYCODE_BACK:
6236                if (mEditor != null && mEditor.mTextActionMode != null) {
6237                    stopTextActionMode();
6238                    return KEY_EVENT_HANDLED;
6239                }
6240                break;
6241
6242            case KeyEvent.KEYCODE_CUT:
6243                if (event.hasNoModifiers() && canCut()) {
6244                    if (onTextContextMenuItem(ID_CUT)) {
6245                        return KEY_EVENT_HANDLED;
6246                    }
6247                }
6248                break;
6249
6250            case KeyEvent.KEYCODE_COPY:
6251                if (event.hasNoModifiers() && canCopy()) {
6252                    if (onTextContextMenuItem(ID_COPY)) {
6253                        return KEY_EVENT_HANDLED;
6254                    }
6255                }
6256                break;
6257
6258            case KeyEvent.KEYCODE_PASTE:
6259                if (event.hasNoModifiers() && canPaste()) {
6260                    if (onTextContextMenuItem(ID_PASTE)) {
6261                        return KEY_EVENT_HANDLED;
6262                    }
6263                }
6264                break;
6265        }
6266
6267        if (mEditor != null && mEditor.mKeyListener != null) {
6268            boolean doDown = true;
6269            if (otherEvent != null) {
6270                try {
6271                    beginBatchEdit();
6272                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6273                            otherEvent);
6274                    hideErrorIfUnchanged();
6275                    doDown = false;
6276                    if (handled) {
6277                        return KEY_EVENT_HANDLED;
6278                    }
6279                } catch (AbstractMethodError e) {
6280                    // onKeyOther was added after 1.0, so if it isn't
6281                    // implemented we need to try to dispatch as a regular down.
6282                } finally {
6283                    endBatchEdit();
6284                }
6285            }
6286
6287            if (doDown) {
6288                beginBatchEdit();
6289                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6290                        keyCode, event);
6291                endBatchEdit();
6292                hideErrorIfUnchanged();
6293                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6294            }
6295        }
6296
6297        // bug 650865: sometimes we get a key event before a layout.
6298        // don't try to move around if we don't know the layout.
6299
6300        if (mMovement != null && mLayout != null) {
6301            boolean doDown = true;
6302            if (otherEvent != null) {
6303                try {
6304                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6305                            otherEvent);
6306                    doDown = false;
6307                    if (handled) {
6308                        return KEY_EVENT_HANDLED;
6309                    }
6310                } catch (AbstractMethodError e) {
6311                    // onKeyOther was added after 1.0, so if it isn't
6312                    // implemented we need to try to dispatch as a regular down.
6313                }
6314            }
6315            if (doDown) {
6316                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6317                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6318                        mPreventDefaultMovement = true;
6319                    }
6320                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6321                }
6322            }
6323        }
6324
6325        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6326                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6327    }
6328
6329    /**
6330     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6331     * can be recorded.
6332     * @hide
6333     */
6334    public void resetErrorChangedFlag() {
6335        /*
6336         * Keep track of what the error was before doing the input
6337         * so that if an input filter changed the error, we leave
6338         * that error showing.  Otherwise, we take down whatever
6339         * error was showing when the user types something.
6340         */
6341        if (mEditor != null) mEditor.mErrorWasChanged = false;
6342    }
6343
6344    /**
6345     * @hide
6346     */
6347    public void hideErrorIfUnchanged() {
6348        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6349            setError(null, null);
6350        }
6351    }
6352
6353    @Override
6354    public boolean onKeyUp(int keyCode, KeyEvent event) {
6355        if (!isEnabled()) {
6356            return super.onKeyUp(keyCode, event);
6357        }
6358
6359        if (!KeyEvent.isModifierKey(keyCode)) {
6360            mPreventDefaultMovement = false;
6361        }
6362
6363        switch (keyCode) {
6364            case KeyEvent.KEYCODE_DPAD_CENTER:
6365                if (event.hasNoModifiers()) {
6366                    /*
6367                     * If there is a click listener, just call through to
6368                     * super, which will invoke it.
6369                     *
6370                     * If there isn't a click listener, try to show the soft
6371                     * input method.  (It will also
6372                     * call performClick(), but that won't do anything in
6373                     * this case.)
6374                     */
6375                    if (!hasOnClickListeners()) {
6376                        if (mMovement != null && mText instanceof Editable
6377                                && mLayout != null && onCheckIsTextEditor()) {
6378                            InputMethodManager imm = InputMethodManager.peekInstance();
6379                            viewClicked(imm);
6380                            if (imm != null && getShowSoftInputOnFocus()) {
6381                                imm.showSoftInput(this, 0);
6382                            }
6383                        }
6384                    }
6385                }
6386                return super.onKeyUp(keyCode, event);
6387
6388            case KeyEvent.KEYCODE_ENTER:
6389                if (event.hasNoModifiers()) {
6390                    if (mEditor != null && mEditor.mInputContentType != null
6391                            && mEditor.mInputContentType.onEditorActionListener != null
6392                            && mEditor.mInputContentType.enterDown) {
6393                        mEditor.mInputContentType.enterDown = false;
6394                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6395                                this, EditorInfo.IME_NULL, event)) {
6396                            return true;
6397                        }
6398                    }
6399
6400                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6401                            || shouldAdvanceFocusOnEnter()) {
6402                        /*
6403                         * If there is a click listener, just call through to
6404                         * super, which will invoke it.
6405                         *
6406                         * If there isn't a click listener, try to advance focus,
6407                         * but still call through to super, which will reset the
6408                         * pressed state and longpress state.  (It will also
6409                         * call performClick(), but that won't do anything in
6410                         * this case.)
6411                         */
6412                        if (!hasOnClickListeners()) {
6413                            View v = focusSearch(FOCUS_DOWN);
6414
6415                            if (v != null) {
6416                                if (!v.requestFocus(FOCUS_DOWN)) {
6417                                    throw new IllegalStateException(
6418                                            "focus search returned a view " +
6419                                            "that wasn't able to take focus!");
6420                                }
6421
6422                                /*
6423                                 * Return true because we handled the key; super
6424                                 * will return false because there was no click
6425                                 * listener.
6426                                 */
6427                                super.onKeyUp(keyCode, event);
6428                                return true;
6429                            } else if ((event.getFlags()
6430                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6431                                // No target for next focus, but make sure the IME
6432                                // if this came from it.
6433                                InputMethodManager imm = InputMethodManager.peekInstance();
6434                                if (imm != null && imm.isActive(this)) {
6435                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6436                                }
6437                            }
6438                        }
6439                    }
6440                    return super.onKeyUp(keyCode, event);
6441                }
6442                break;
6443        }
6444
6445        if (mEditor != null && mEditor.mKeyListener != null)
6446            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6447                return true;
6448
6449        if (mMovement != null && mLayout != null)
6450            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6451                return true;
6452
6453        return super.onKeyUp(keyCode, event);
6454    }
6455
6456    @Override
6457    public boolean onCheckIsTextEditor() {
6458        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6459    }
6460
6461    @Override
6462    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6463        if (onCheckIsTextEditor() && isEnabled()) {
6464            mEditor.createInputMethodStateIfNeeded();
6465            outAttrs.inputType = getInputType();
6466            if (mEditor.mInputContentType != null) {
6467                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6468                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6469                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6470                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6471                outAttrs.extras = mEditor.mInputContentType.extras;
6472                outAttrs.hintLocales = mEditor.mInputContentType.imeHintLocales;
6473            } else {
6474                outAttrs.imeOptions = EditorInfo.IME_NULL;
6475                outAttrs.hintLocales = null;
6476            }
6477            if (focusSearch(FOCUS_DOWN) != null) {
6478                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6479            }
6480            if (focusSearch(FOCUS_UP) != null) {
6481                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6482            }
6483            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6484                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6485                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6486                    // An action has not been set, but the enter key will move to
6487                    // the next focus, so set the action to that.
6488                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6489                } else {
6490                    // An action has not been set, and there is no focus to move
6491                    // to, so let's just supply a "done" action.
6492                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6493                }
6494                if (!shouldAdvanceFocusOnEnter()) {
6495                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6496                }
6497            }
6498            if (isMultilineInputType(outAttrs.inputType)) {
6499                // Multi-line text editors should always show an enter key.
6500                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6501            }
6502            outAttrs.hintText = mHint;
6503            if (mText instanceof Editable) {
6504                InputConnection ic = new EditableInputConnection(this);
6505                outAttrs.initialSelStart = getSelectionStart();
6506                outAttrs.initialSelEnd = getSelectionEnd();
6507                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6508                return ic;
6509            }
6510        }
6511        return null;
6512    }
6513
6514    /**
6515     * If this TextView contains editable content, extract a portion of it
6516     * based on the information in <var>request</var> in to <var>outText</var>.
6517     * @return Returns true if the text was successfully extracted, else false.
6518     */
6519    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6520        createEditorIfNeeded();
6521        return mEditor.extractText(request, outText);
6522    }
6523
6524    /**
6525     * This is used to remove all style-impacting spans from text before new
6526     * extracted text is being replaced into it, so that we don't have any
6527     * lingering spans applied during the replace.
6528     */
6529    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6530        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6531        int i = spans.length;
6532        while (i > 0) {
6533            i--;
6534            spannable.removeSpan(spans[i]);
6535        }
6536    }
6537
6538    /**
6539     * Apply to this text view the given extracted text, as previously
6540     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6541     */
6542    public void setExtractedText(ExtractedText text) {
6543        Editable content = getEditableText();
6544        if (text.text != null) {
6545            if (content == null) {
6546                setText(text.text, TextView.BufferType.EDITABLE);
6547            } else {
6548                int start = 0;
6549                int end = content.length();
6550
6551                if (text.partialStartOffset >= 0) {
6552                    final int N = content.length();
6553                    start = text.partialStartOffset;
6554                    if (start > N) start = N;
6555                    end = text.partialEndOffset;
6556                    if (end > N) end = N;
6557                }
6558
6559                removeParcelableSpans(content, start, end);
6560                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6561                    if (text.text instanceof Spanned) {
6562                        // OK to copy spans only.
6563                        TextUtils.copySpansFrom((Spanned) text.text, 0, end - start,
6564                                Object.class, content, start);
6565                    }
6566                } else {
6567                    content.replace(start, end, text.text);
6568                }
6569            }
6570        }
6571
6572        // Now set the selection position...  make sure it is in range, to
6573        // avoid crashes.  If this is a partial update, it is possible that
6574        // the underlying text may have changed, causing us problems here.
6575        // Also we just don't want to trust clients to do the right thing.
6576        Spannable sp = (Spannable)getText();
6577        final int N = sp.length();
6578        int start = text.selectionStart;
6579        if (start < 0) start = 0;
6580        else if (start > N) start = N;
6581        int end = text.selectionEnd;
6582        if (end < 0) end = 0;
6583        else if (end > N) end = N;
6584        Selection.setSelection(sp, start, end);
6585
6586        // Finally, update the selection mode.
6587        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6588            MetaKeyKeyListener.startSelecting(this, sp);
6589        } else {
6590            MetaKeyKeyListener.stopSelecting(this, sp);
6591        }
6592    }
6593
6594    /**
6595     * @hide
6596     */
6597    public void setExtracting(ExtractedTextRequest req) {
6598        if (mEditor.mInputMethodState != null) {
6599            mEditor.mInputMethodState.mExtractedTextRequest = req;
6600        }
6601        // This would stop a possible selection mode, but no such mode is started in case
6602        // extracted mode will start. Some text is selected though, and will trigger an action mode
6603        // in the extracted view.
6604        mEditor.hideCursorAndSpanControllers();
6605        stopTextActionMode();
6606        if (mEditor.mSelectionModifierCursorController != null) {
6607            mEditor.mSelectionModifierCursorController.resetTouchOffsets();
6608        }
6609    }
6610
6611    /**
6612     * Called by the framework in response to a text completion from
6613     * the current input method, provided by it calling
6614     * {@link InputConnection#commitCompletion
6615     * InputConnection.commitCompletion()}.  The default implementation does
6616     * nothing; text views that are supporting auto-completion should override
6617     * this to do their desired behavior.
6618     *
6619     * @param text The auto complete text the user has selected.
6620     */
6621    public void onCommitCompletion(CompletionInfo text) {
6622        // intentionally empty
6623    }
6624
6625    /**
6626     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6627     * a dictionnary) from the current input method, provided by it calling
6628     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6629     * implementation flashes the background of the corrected word to provide feedback to the user.
6630     *
6631     * @param info The auto correct info about the text that was corrected.
6632     */
6633    public void onCommitCorrection(CorrectionInfo info) {
6634        if (mEditor != null) mEditor.onCommitCorrection(info);
6635    }
6636
6637    public void beginBatchEdit() {
6638        if (mEditor != null) mEditor.beginBatchEdit();
6639    }
6640
6641    public void endBatchEdit() {
6642        if (mEditor != null) mEditor.endBatchEdit();
6643    }
6644
6645    /**
6646     * Called by the framework in response to a request to begin a batch
6647     * of edit operations through a call to link {@link #beginBatchEdit()}.
6648     */
6649    public void onBeginBatchEdit() {
6650        // intentionally empty
6651    }
6652
6653    /**
6654     * Called by the framework in response to a request to end a batch
6655     * of edit operations through a call to link {@link #endBatchEdit}.
6656     */
6657    public void onEndBatchEdit() {
6658        // intentionally empty
6659    }
6660
6661    /**
6662     * Called by the framework in response to a private command from the
6663     * current method, provided by it calling
6664     * {@link InputConnection#performPrivateCommand
6665     * InputConnection.performPrivateCommand()}.
6666     *
6667     * @param action The action name of the command.
6668     * @param data Any additional data for the command.  This may be null.
6669     * @return Return true if you handled the command, else false.
6670     */
6671    public boolean onPrivateIMECommand(String action, Bundle data) {
6672        return false;
6673    }
6674
6675    private void nullLayouts() {
6676        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6677            mSavedLayout = (BoringLayout) mLayout;
6678        }
6679        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6680            mSavedHintLayout = (BoringLayout) mHintLayout;
6681        }
6682
6683        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6684
6685        mBoring = mHintBoring = null;
6686
6687        // Since it depends on the value of mLayout
6688        if (mEditor != null) mEditor.prepareCursorControllers();
6689    }
6690
6691    /**
6692     * Make a new Layout based on the already-measured size of the view,
6693     * on the assumption that it was measured correctly at some point.
6694     */
6695    private void assumeLayout() {
6696        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6697
6698        if (width < 1) {
6699            width = 0;
6700        }
6701
6702        int physicalWidth = width;
6703
6704        if (mHorizontallyScrolling) {
6705            width = VERY_WIDE;
6706        }
6707
6708        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6709                      physicalWidth, false);
6710    }
6711
6712    private Layout.Alignment getLayoutAlignment() {
6713        Layout.Alignment alignment;
6714        switch (getTextAlignment()) {
6715            case TEXT_ALIGNMENT_GRAVITY:
6716                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6717                    case Gravity.START:
6718                        alignment = Layout.Alignment.ALIGN_NORMAL;
6719                        break;
6720                    case Gravity.END:
6721                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6722                        break;
6723                    case Gravity.LEFT:
6724                        alignment = Layout.Alignment.ALIGN_LEFT;
6725                        break;
6726                    case Gravity.RIGHT:
6727                        alignment = Layout.Alignment.ALIGN_RIGHT;
6728                        break;
6729                    case Gravity.CENTER_HORIZONTAL:
6730                        alignment = Layout.Alignment.ALIGN_CENTER;
6731                        break;
6732                    default:
6733                        alignment = Layout.Alignment.ALIGN_NORMAL;
6734                        break;
6735                }
6736                break;
6737            case TEXT_ALIGNMENT_TEXT_START:
6738                alignment = Layout.Alignment.ALIGN_NORMAL;
6739                break;
6740            case TEXT_ALIGNMENT_TEXT_END:
6741                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6742                break;
6743            case TEXT_ALIGNMENT_CENTER:
6744                alignment = Layout.Alignment.ALIGN_CENTER;
6745                break;
6746            case TEXT_ALIGNMENT_VIEW_START:
6747                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6748                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6749                break;
6750            case TEXT_ALIGNMENT_VIEW_END:
6751                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6752                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6753                break;
6754            case TEXT_ALIGNMENT_INHERIT:
6755                // This should never happen as we have already resolved the text alignment
6756                // but better safe than sorry so we just fall through
6757            default:
6758                alignment = Layout.Alignment.ALIGN_NORMAL;
6759                break;
6760        }
6761        return alignment;
6762    }
6763
6764    /**
6765     * The width passed in is now the desired layout width,
6766     * not the full view width with padding.
6767     * {@hide}
6768     */
6769    protected void makeNewLayout(int wantWidth, int hintWidth,
6770                                 BoringLayout.Metrics boring,
6771                                 BoringLayout.Metrics hintBoring,
6772                                 int ellipsisWidth, boolean bringIntoView) {
6773        stopMarquee();
6774
6775        // Update "old" cached values
6776        mOldMaximum = mMaximum;
6777        mOldMaxMode = mMaxMode;
6778
6779        mHighlightPathBogus = true;
6780
6781        if (wantWidth < 0) {
6782            wantWidth = 0;
6783        }
6784        if (hintWidth < 0) {
6785            hintWidth = 0;
6786        }
6787
6788        Layout.Alignment alignment = getLayoutAlignment();
6789        final boolean testDirChange = mSingleLine && mLayout != null &&
6790            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6791             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6792        int oldDir = 0;
6793        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6794        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6795        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6796                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6797        TruncateAt effectiveEllipsize = mEllipsize;
6798        if (mEllipsize == TruncateAt.MARQUEE &&
6799                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6800            effectiveEllipsize = TruncateAt.END_SMALL;
6801        }
6802
6803        if (mTextDir == null) {
6804            mTextDir = getTextDirectionHeuristic();
6805        }
6806
6807        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6808                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6809        if (switchEllipsize) {
6810            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6811                    TruncateAt.END : TruncateAt.MARQUEE;
6812            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6813                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6814        }
6815
6816        shouldEllipsize = mEllipsize != null;
6817        mHintLayout = null;
6818
6819        if (mHint != null) {
6820            if (shouldEllipsize) hintWidth = wantWidth;
6821
6822            if (hintBoring == UNKNOWN_BORING) {
6823                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6824                                                   mHintBoring);
6825                if (hintBoring != null) {
6826                    mHintBoring = hintBoring;
6827                }
6828            }
6829
6830            if (hintBoring != null) {
6831                if (hintBoring.width <= hintWidth &&
6832                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6833                    if (mSavedHintLayout != null) {
6834                        mHintLayout = mSavedHintLayout.
6835                                replaceOrMake(mHint, mTextPaint,
6836                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6837                                hintBoring, mIncludePad);
6838                    } else {
6839                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6840                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6841                                hintBoring, mIncludePad);
6842                    }
6843
6844                    mSavedHintLayout = (BoringLayout) mHintLayout;
6845                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6846                    if (mSavedHintLayout != null) {
6847                        mHintLayout = mSavedHintLayout.
6848                                replaceOrMake(mHint, mTextPaint,
6849                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6850                                hintBoring, mIncludePad, mEllipsize,
6851                                ellipsisWidth);
6852                    } else {
6853                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6854                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6855                                hintBoring, mIncludePad, mEllipsize,
6856                                ellipsisWidth);
6857                    }
6858                }
6859            }
6860            // TODO: code duplication with makeSingleLayout()
6861            if (mHintLayout == null) {
6862                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6863                        mHint.length(), mTextPaint, hintWidth)
6864                        .setAlignment(alignment)
6865                        .setTextDirection(mTextDir)
6866                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6867                        .setIncludePad(mIncludePad)
6868                        .setBreakStrategy(mBreakStrategy)
6869                        .setHyphenationFrequency(mHyphenationFrequency)
6870                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6871                if (shouldEllipsize) {
6872                    builder.setEllipsize(mEllipsize)
6873                            .setEllipsizedWidth(ellipsisWidth);
6874                }
6875                mHintLayout = builder.build();
6876            }
6877        }
6878
6879        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6880            registerForPreDraw();
6881        }
6882
6883        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6884            if (!compressText(ellipsisWidth)) {
6885                final int height = mLayoutParams.height;
6886                // If the size of the view does not depend on the size of the text, try to
6887                // start the marquee immediately
6888                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6889                    startMarquee();
6890                } else {
6891                    // Defer the start of the marquee until we know our width (see setFrame())
6892                    mRestartMarquee = true;
6893                }
6894            }
6895        }
6896
6897        // CursorControllers need a non-null mLayout
6898        if (mEditor != null) mEditor.prepareCursorControllers();
6899    }
6900
6901    /**
6902     * @hide
6903     */
6904    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6905            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6906            boolean useSaved) {
6907        Layout result = null;
6908        if (mText instanceof Spannable) {
6909            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6910                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6911                    mBreakStrategy, mHyphenationFrequency,
6912                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6913        } else {
6914            if (boring == UNKNOWN_BORING) {
6915                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6916                if (boring != null) {
6917                    mBoring = boring;
6918                }
6919            }
6920
6921            if (boring != null) {
6922                if (boring.width <= wantWidth &&
6923                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6924                    if (useSaved && mSavedLayout != null) {
6925                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6926                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6927                                boring, mIncludePad);
6928                    } else {
6929                        result = BoringLayout.make(mTransformed, mTextPaint,
6930                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6931                                boring, mIncludePad);
6932                    }
6933
6934                    if (useSaved) {
6935                        mSavedLayout = (BoringLayout) result;
6936                    }
6937                } else if (shouldEllipsize && boring.width <= wantWidth) {
6938                    if (useSaved && mSavedLayout != null) {
6939                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6940                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6941                                boring, mIncludePad, effectiveEllipsize,
6942                                ellipsisWidth);
6943                    } else {
6944                        result = BoringLayout.make(mTransformed, mTextPaint,
6945                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6946                                boring, mIncludePad, effectiveEllipsize,
6947                                ellipsisWidth);
6948                    }
6949                }
6950            }
6951        }
6952        if (result == null) {
6953            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6954                    0, mTransformed.length(), mTextPaint, wantWidth)
6955                    .setAlignment(alignment)
6956                    .setTextDirection(mTextDir)
6957                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6958                    .setIncludePad(mIncludePad)
6959                    .setBreakStrategy(mBreakStrategy)
6960                    .setHyphenationFrequency(mHyphenationFrequency)
6961                    .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6962            if (shouldEllipsize) {
6963                builder.setEllipsize(effectiveEllipsize)
6964                        .setEllipsizedWidth(ellipsisWidth);
6965
6966            }
6967            // TODO: explore always setting maxLines
6968            result = builder.build();
6969        }
6970        return result;
6971    }
6972
6973    private boolean compressText(float width) {
6974        if (isHardwareAccelerated()) return false;
6975
6976        // Only compress the text if it hasn't been compressed by the previous pass
6977        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6978                mTextPaint.getTextScaleX() == 1.0f) {
6979            final float textWidth = mLayout.getLineWidth(0);
6980            final float overflow = (textWidth + 1.0f - width) / width;
6981            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6982                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6983                post(new Runnable() {
6984                    public void run() {
6985                        requestLayout();
6986                    }
6987                });
6988                return true;
6989            }
6990        }
6991
6992        return false;
6993    }
6994
6995    private static int desired(Layout layout) {
6996        int n = layout.getLineCount();
6997        CharSequence text = layout.getText();
6998        float max = 0;
6999
7000        // if any line was wrapped, we can't use it.
7001        // but it's ok for the last line not to have a newline
7002
7003        for (int i = 0; i < n - 1; i++) {
7004            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
7005                return -1;
7006        }
7007
7008        for (int i = 0; i < n; i++) {
7009            max = Math.max(max, layout.getLineWidth(i));
7010        }
7011
7012        return (int) Math.ceil(max);
7013    }
7014
7015    /**
7016     * Set whether the TextView includes extra top and bottom padding to make
7017     * room for accents that go above the normal ascent and descent.
7018     * The default is true.
7019     *
7020     * @see #getIncludeFontPadding()
7021     *
7022     * @attr ref android.R.styleable#TextView_includeFontPadding
7023     */
7024    public void setIncludeFontPadding(boolean includepad) {
7025        if (mIncludePad != includepad) {
7026            mIncludePad = includepad;
7027
7028            if (mLayout != null) {
7029                nullLayouts();
7030                requestLayout();
7031                invalidate();
7032            }
7033        }
7034    }
7035
7036    /**
7037     * Gets whether the TextView includes extra top and bottom padding to make
7038     * room for accents that go above the normal ascent and descent.
7039     *
7040     * @see #setIncludeFontPadding(boolean)
7041     *
7042     * @attr ref android.R.styleable#TextView_includeFontPadding
7043     */
7044    public boolean getIncludeFontPadding() {
7045        return mIncludePad;
7046    }
7047
7048    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
7049
7050    @Override
7051    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
7052        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
7053        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
7054        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
7055        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
7056
7057        int width;
7058        int height;
7059
7060        BoringLayout.Metrics boring = UNKNOWN_BORING;
7061        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
7062
7063        if (mTextDir == null) {
7064            mTextDir = getTextDirectionHeuristic();
7065        }
7066
7067        int des = -1;
7068        boolean fromexisting = false;
7069
7070        if (widthMode == MeasureSpec.EXACTLY) {
7071            // Parent has told us how big to be. So be it.
7072            width = widthSize;
7073        } else {
7074            if (mLayout != null && mEllipsize == null) {
7075                des = desired(mLayout);
7076            }
7077
7078            if (des < 0) {
7079                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7080                if (boring != null) {
7081                    mBoring = boring;
7082                }
7083            } else {
7084                fromexisting = true;
7085            }
7086
7087            if (boring == null || boring == UNKNOWN_BORING) {
7088                if (des < 0) {
7089                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7090                }
7091                width = des;
7092            } else {
7093                width = boring.width;
7094            }
7095
7096            final Drawables dr = mDrawables;
7097            if (dr != null) {
7098                width = Math.max(width, dr.mDrawableWidthTop);
7099                width = Math.max(width, dr.mDrawableWidthBottom);
7100            }
7101
7102            if (mHint != null) {
7103                int hintDes = -1;
7104                int hintWidth;
7105
7106                if (mHintLayout != null && mEllipsize == null) {
7107                    hintDes = desired(mHintLayout);
7108                }
7109
7110                if (hintDes < 0) {
7111                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7112                    if (hintBoring != null) {
7113                        mHintBoring = hintBoring;
7114                    }
7115                }
7116
7117                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7118                    if (hintDes < 0) {
7119                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7120                    }
7121                    hintWidth = hintDes;
7122                } else {
7123                    hintWidth = hintBoring.width;
7124                }
7125
7126                if (hintWidth > width) {
7127                    width = hintWidth;
7128                }
7129            }
7130
7131            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7132
7133            if (mMaxWidthMode == EMS) {
7134                width = Math.min(width, mMaxWidth * getLineHeight());
7135            } else {
7136                width = Math.min(width, mMaxWidth);
7137            }
7138
7139            if (mMinWidthMode == EMS) {
7140                width = Math.max(width, mMinWidth * getLineHeight());
7141            } else {
7142                width = Math.max(width, mMinWidth);
7143            }
7144
7145            // Check against our minimum width
7146            width = Math.max(width, getSuggestedMinimumWidth());
7147
7148            if (widthMode == MeasureSpec.AT_MOST) {
7149                width = Math.min(widthSize, width);
7150            }
7151        }
7152
7153        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7154        int unpaddedWidth = want;
7155
7156        if (mHorizontallyScrolling) want = VERY_WIDE;
7157
7158        int hintWant = want;
7159        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7160
7161        if (mLayout == null) {
7162            makeNewLayout(want, hintWant, boring, hintBoring,
7163                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7164        } else {
7165            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7166                    (hintWidth != hintWant) ||
7167                    (mLayout.getEllipsizedWidth() !=
7168                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7169
7170            final boolean widthChanged = (mHint == null) &&
7171                    (mEllipsize == null) &&
7172                    (want > mLayout.getWidth()) &&
7173                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7174
7175            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7176
7177            if (layoutChanged || maximumChanged) {
7178                if (!maximumChanged && widthChanged) {
7179                    mLayout.increaseWidthTo(want);
7180                } else {
7181                    makeNewLayout(want, hintWant, boring, hintBoring,
7182                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7183                }
7184            } else {
7185                // Nothing has changed
7186            }
7187        }
7188
7189        if (heightMode == MeasureSpec.EXACTLY) {
7190            // Parent has told us how big to be. So be it.
7191            height = heightSize;
7192            mDesiredHeightAtMeasure = -1;
7193        } else {
7194            int desired = getDesiredHeight();
7195
7196            height = desired;
7197            mDesiredHeightAtMeasure = desired;
7198
7199            if (heightMode == MeasureSpec.AT_MOST) {
7200                height = Math.min(desired, heightSize);
7201            }
7202        }
7203
7204        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7205        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7206            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7207        }
7208
7209        /*
7210         * We didn't let makeNewLayout() register to bring the cursor into view,
7211         * so do it here if there is any possibility that it is needed.
7212         */
7213        if (mMovement != null ||
7214            mLayout.getWidth() > unpaddedWidth ||
7215            mLayout.getHeight() > unpaddedHeight) {
7216            registerForPreDraw();
7217        } else {
7218            scrollTo(0, 0);
7219        }
7220
7221        setMeasuredDimension(width, height);
7222    }
7223
7224    private int getDesiredHeight() {
7225        return Math.max(
7226                getDesiredHeight(mLayout, true),
7227                getDesiredHeight(mHintLayout, mEllipsize != null));
7228    }
7229
7230    private int getDesiredHeight(Layout layout, boolean cap) {
7231        if (layout == null) {
7232            return 0;
7233        }
7234
7235        int linecount = layout.getLineCount();
7236        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7237        int desired = layout.getLineTop(linecount);
7238
7239        final Drawables dr = mDrawables;
7240        if (dr != null) {
7241            desired = Math.max(desired, dr.mDrawableHeightLeft);
7242            desired = Math.max(desired, dr.mDrawableHeightRight);
7243        }
7244
7245        desired += pad;
7246
7247        if (mMaxMode == LINES) {
7248            /*
7249             * Don't cap the hint to a certain number of lines.
7250             * (Do cap it, though, if we have a maximum pixel height.)
7251             */
7252            if (cap) {
7253                if (linecount > mMaximum) {
7254                    desired = layout.getLineTop(mMaximum);
7255
7256                    if (dr != null) {
7257                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7258                        desired = Math.max(desired, dr.mDrawableHeightRight);
7259                    }
7260
7261                    desired += pad;
7262                    linecount = mMaximum;
7263                }
7264            }
7265        } else {
7266            desired = Math.min(desired, mMaximum);
7267        }
7268
7269        if (mMinMode == LINES) {
7270            if (linecount < mMinimum) {
7271                desired += getLineHeight() * (mMinimum - linecount);
7272            }
7273        } else {
7274            desired = Math.max(desired, mMinimum);
7275        }
7276
7277        // Check against our minimum height
7278        desired = Math.max(desired, getSuggestedMinimumHeight());
7279
7280        return desired;
7281    }
7282
7283    /**
7284     * Check whether a change to the existing text layout requires a
7285     * new view layout.
7286     */
7287    private void checkForResize() {
7288        boolean sizeChanged = false;
7289
7290        if (mLayout != null) {
7291            // Check if our width changed
7292            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7293                sizeChanged = true;
7294                invalidate();
7295            }
7296
7297            // Check if our height changed
7298            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7299                int desiredHeight = getDesiredHeight();
7300
7301                if (desiredHeight != this.getHeight()) {
7302                    sizeChanged = true;
7303                }
7304            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7305                if (mDesiredHeightAtMeasure >= 0) {
7306                    int desiredHeight = getDesiredHeight();
7307
7308                    if (desiredHeight != mDesiredHeightAtMeasure) {
7309                        sizeChanged = true;
7310                    }
7311                }
7312            }
7313        }
7314
7315        if (sizeChanged) {
7316            requestLayout();
7317            // caller will have already invalidated
7318        }
7319    }
7320
7321    /**
7322     * Check whether entirely new text requires a new view layout
7323     * or merely a new text layout.
7324     */
7325    private void checkForRelayout() {
7326        // If we have a fixed width, we can just swap in a new text layout
7327        // if the text height stays the same or if the view height is fixed.
7328
7329        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7330                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7331                (mHint == null || mHintLayout != null) &&
7332                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7333            // Static width, so try making a new text layout.
7334
7335            int oldht = mLayout.getHeight();
7336            int want = mLayout.getWidth();
7337            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7338
7339            /*
7340             * No need to bring the text into view, since the size is not
7341             * changing (unless we do the requestLayout(), in which case it
7342             * will happen at measure).
7343             */
7344            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7345                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7346                          false);
7347
7348            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7349                // In a fixed-height view, so use our new text layout.
7350                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7351                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7352                    invalidate();
7353                    return;
7354                }
7355
7356                // Dynamic height, but height has stayed the same,
7357                // so use our new text layout.
7358                if (mLayout.getHeight() == oldht &&
7359                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7360                    invalidate();
7361                    return;
7362                }
7363            }
7364
7365            // We lose: the height has changed and we have a dynamic height.
7366            // Request a new view layout using our new text layout.
7367            requestLayout();
7368            invalidate();
7369        } else {
7370            // Dynamic width, so we have no choice but to request a new
7371            // view layout with a new text layout.
7372            nullLayouts();
7373            requestLayout();
7374            invalidate();
7375        }
7376    }
7377
7378    @Override
7379    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7380        super.onLayout(changed, left, top, right, bottom);
7381        if (mDeferScroll >= 0) {
7382            int curs = mDeferScroll;
7383            mDeferScroll = -1;
7384            bringPointIntoView(Math.min(curs, mText.length()));
7385        }
7386    }
7387
7388    private boolean isShowingHint() {
7389        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7390    }
7391
7392    /**
7393     * Returns true if anything changed.
7394     */
7395    private boolean bringTextIntoView() {
7396        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7397        int line = 0;
7398        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7399            line = layout.getLineCount() - 1;
7400        }
7401
7402        Layout.Alignment a = layout.getParagraphAlignment(line);
7403        int dir = layout.getParagraphDirection(line);
7404        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7405        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7406        int ht = layout.getHeight();
7407
7408        int scrollx, scrolly;
7409
7410        // Convert to left, center, or right alignment.
7411        if (a == Layout.Alignment.ALIGN_NORMAL) {
7412            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7413                Layout.Alignment.ALIGN_RIGHT;
7414        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7415            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7416                Layout.Alignment.ALIGN_LEFT;
7417        }
7418
7419        if (a == Layout.Alignment.ALIGN_CENTER) {
7420            /*
7421             * Keep centered if possible, or, if it is too wide to fit,
7422             * keep leading edge in view.
7423             */
7424
7425            int left = (int) Math.floor(layout.getLineLeft(line));
7426            int right = (int) Math.ceil(layout.getLineRight(line));
7427
7428            if (right - left < hspace) {
7429                scrollx = (right + left) / 2 - hspace / 2;
7430            } else {
7431                if (dir < 0) {
7432                    scrollx = right - hspace;
7433                } else {
7434                    scrollx = left;
7435                }
7436            }
7437        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7438            int right = (int) Math.ceil(layout.getLineRight(line));
7439            scrollx = right - hspace;
7440        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7441            scrollx = (int) Math.floor(layout.getLineLeft(line));
7442        }
7443
7444        if (ht < vspace) {
7445            scrolly = 0;
7446        } else {
7447            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7448                scrolly = ht - vspace;
7449            } else {
7450                scrolly = 0;
7451            }
7452        }
7453
7454        if (scrollx != mScrollX || scrolly != mScrollY) {
7455            scrollTo(scrollx, scrolly);
7456            return true;
7457        } else {
7458            return false;
7459        }
7460    }
7461
7462    /**
7463     * Move the point, specified by the offset, into the view if it is needed.
7464     * This has to be called after layout. Returns true if anything changed.
7465     */
7466    public boolean bringPointIntoView(int offset) {
7467        if (isLayoutRequested()) {
7468            mDeferScroll = offset;
7469            return false;
7470        }
7471        boolean changed = false;
7472
7473        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7474
7475        if (layout == null) return changed;
7476
7477        int line = layout.getLineForOffset(offset);
7478
7479        int grav;
7480
7481        switch (layout.getParagraphAlignment(line)) {
7482            case ALIGN_LEFT:
7483                grav = 1;
7484                break;
7485            case ALIGN_RIGHT:
7486                grav = -1;
7487                break;
7488            case ALIGN_NORMAL:
7489                grav = layout.getParagraphDirection(line);
7490                break;
7491            case ALIGN_OPPOSITE:
7492                grav = -layout.getParagraphDirection(line);
7493                break;
7494            case ALIGN_CENTER:
7495            default:
7496                grav = 0;
7497                break;
7498        }
7499
7500        // We only want to clamp the cursor to fit within the layout width
7501        // in left-to-right modes, because in a right to left alignment,
7502        // we want to scroll to keep the line-right on the screen, as other
7503        // lines are likely to have text flush with the right margin, which
7504        // we want to keep visible.
7505        // A better long-term solution would probably be to measure both
7506        // the full line and a blank-trimmed version, and, for example, use
7507        // the latter measurement for centering and right alignment, but for
7508        // the time being we only implement the cursor clamping in left to
7509        // right where it is most likely to be annoying.
7510        final boolean clamped = grav > 0;
7511        // FIXME: Is it okay to truncate this, or should we round?
7512        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7513        final int top = layout.getLineTop(line);
7514        final int bottom = layout.getLineTop(line + 1);
7515
7516        int left = (int) Math.floor(layout.getLineLeft(line));
7517        int right = (int) Math.ceil(layout.getLineRight(line));
7518        int ht = layout.getHeight();
7519
7520        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7521        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7522        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7523            // If cursor has been clamped, make sure we don't scroll.
7524            right = Math.max(x, left + hspace);
7525        }
7526
7527        int hslack = (bottom - top) / 2;
7528        int vslack = hslack;
7529
7530        if (vslack > vspace / 4)
7531            vslack = vspace / 4;
7532        if (hslack > hspace / 4)
7533            hslack = hspace / 4;
7534
7535        int hs = mScrollX;
7536        int vs = mScrollY;
7537
7538        if (top - vs < vslack)
7539            vs = top - vslack;
7540        if (bottom - vs > vspace - vslack)
7541            vs = bottom - (vspace - vslack);
7542        if (ht - vs < vspace)
7543            vs = ht - vspace;
7544        if (0 - vs > 0)
7545            vs = 0;
7546
7547        if (grav != 0) {
7548            if (x - hs < hslack) {
7549                hs = x - hslack;
7550            }
7551            if (x - hs > hspace - hslack) {
7552                hs = x - (hspace - hslack);
7553            }
7554        }
7555
7556        if (grav < 0) {
7557            if (left - hs > 0)
7558                hs = left;
7559            if (right - hs < hspace)
7560                hs = right - hspace;
7561        } else if (grav > 0) {
7562            if (right - hs < hspace)
7563                hs = right - hspace;
7564            if (left - hs > 0)
7565                hs = left;
7566        } else /* grav == 0 */ {
7567            if (right - left <= hspace) {
7568                /*
7569                 * If the entire text fits, center it exactly.
7570                 */
7571                hs = left - (hspace - (right - left)) / 2;
7572            } else if (x > right - hslack) {
7573                /*
7574                 * If we are near the right edge, keep the right edge
7575                 * at the edge of the view.
7576                 */
7577                hs = right - hspace;
7578            } else if (x < left + hslack) {
7579                /*
7580                 * If we are near the left edge, keep the left edge
7581                 * at the edge of the view.
7582                 */
7583                hs = left;
7584            } else if (left > hs) {
7585                /*
7586                 * Is there whitespace visible at the left?  Fix it if so.
7587                 */
7588                hs = left;
7589            } else if (right < hs + hspace) {
7590                /*
7591                 * Is there whitespace visible at the right?  Fix it if so.
7592                 */
7593                hs = right - hspace;
7594            } else {
7595                /*
7596                 * Otherwise, float as needed.
7597                 */
7598                if (x - hs < hslack) {
7599                    hs = x - hslack;
7600                }
7601                if (x - hs > hspace - hslack) {
7602                    hs = x - (hspace - hslack);
7603                }
7604            }
7605        }
7606
7607        if (hs != mScrollX || vs != mScrollY) {
7608            if (mScroller == null) {
7609                scrollTo(hs, vs);
7610            } else {
7611                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7612                int dx = hs - mScrollX;
7613                int dy = vs - mScrollY;
7614
7615                if (duration > ANIMATED_SCROLL_GAP) {
7616                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7617                    awakenScrollBars(mScroller.getDuration());
7618                    invalidate();
7619                } else {
7620                    if (!mScroller.isFinished()) {
7621                        mScroller.abortAnimation();
7622                    }
7623
7624                    scrollBy(dx, dy);
7625                }
7626
7627                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7628            }
7629
7630            changed = true;
7631        }
7632
7633        if (isFocused()) {
7634            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7635            // requestRectangleOnScreen() is in terms of content coordinates.
7636
7637            // The offsets here are to ensure the rectangle we are using is
7638            // within our view bounds, in case the cursor is on the far left
7639            // or right.  If it isn't withing the bounds, then this request
7640            // will be ignored.
7641            if (mTempRect == null) mTempRect = new Rect();
7642            mTempRect.set(x - 2, top, x + 2, bottom);
7643            getInterestingRect(mTempRect, line);
7644            mTempRect.offset(mScrollX, mScrollY);
7645
7646            if (requestRectangleOnScreen(mTempRect)) {
7647                changed = true;
7648            }
7649        }
7650
7651        return changed;
7652    }
7653
7654    /**
7655     * Move the cursor, if needed, so that it is at an offset that is visible
7656     * to the user.  This will not move the cursor if it represents more than
7657     * one character (a selection range).  This will only work if the
7658     * TextView contains spannable text; otherwise it will do nothing.
7659     *
7660     * @return True if the cursor was actually moved, false otherwise.
7661     */
7662    public boolean moveCursorToVisibleOffset() {
7663        if (!(mText instanceof Spannable)) {
7664            return false;
7665        }
7666        int start = getSelectionStart();
7667        int end = getSelectionEnd();
7668        if (start != end) {
7669            return false;
7670        }
7671
7672        // First: make sure the line is visible on screen:
7673
7674        int line = mLayout.getLineForOffset(start);
7675
7676        final int top = mLayout.getLineTop(line);
7677        final int bottom = mLayout.getLineTop(line + 1);
7678        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7679        int vslack = (bottom - top) / 2;
7680        if (vslack > vspace / 4)
7681            vslack = vspace / 4;
7682        final int vs = mScrollY;
7683
7684        if (top < (vs+vslack)) {
7685            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7686        } else if (bottom > (vspace+vs-vslack)) {
7687            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7688        }
7689
7690        // Next: make sure the character is visible on screen:
7691
7692        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7693        final int hs = mScrollX;
7694        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7695        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7696
7697        // line might contain bidirectional text
7698        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7699        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7700
7701        int newStart = start;
7702        if (newStart < lowChar) {
7703            newStart = lowChar;
7704        } else if (newStart > highChar) {
7705            newStart = highChar;
7706        }
7707
7708        if (newStart != start) {
7709            Selection.setSelection((Spannable)mText, newStart);
7710            return true;
7711        }
7712
7713        return false;
7714    }
7715
7716    @Override
7717    public void computeScroll() {
7718        if (mScroller != null) {
7719            if (mScroller.computeScrollOffset()) {
7720                mScrollX = mScroller.getCurrX();
7721                mScrollY = mScroller.getCurrY();
7722                invalidateParentCaches();
7723                postInvalidate();  // So we draw again
7724            }
7725        }
7726    }
7727
7728    private void getInterestingRect(Rect r, int line) {
7729        convertFromViewportToContentCoordinates(r);
7730
7731        // Rectangle can can be expanded on first and last line to take
7732        // padding into account.
7733        // TODO Take left/right padding into account too?
7734        if (line == 0) r.top -= getExtendedPaddingTop();
7735        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7736    }
7737
7738    private void convertFromViewportToContentCoordinates(Rect r) {
7739        final int horizontalOffset = viewportToContentHorizontalOffset();
7740        r.left += horizontalOffset;
7741        r.right += horizontalOffset;
7742
7743        final int verticalOffset = viewportToContentVerticalOffset();
7744        r.top += verticalOffset;
7745        r.bottom += verticalOffset;
7746    }
7747
7748    int viewportToContentHorizontalOffset() {
7749        return getCompoundPaddingLeft() - mScrollX;
7750    }
7751
7752    int viewportToContentVerticalOffset() {
7753        int offset = getExtendedPaddingTop() - mScrollY;
7754        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7755            offset += getVerticalOffset(false);
7756        }
7757        return offset;
7758    }
7759
7760    @Override
7761    public void debug(int depth) {
7762        super.debug(depth);
7763
7764        String output = debugIndent(depth);
7765        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7766                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7767                + "} ";
7768
7769        if (mText != null) {
7770
7771            output += "mText=\"" + mText + "\" ";
7772            if (mLayout != null) {
7773                output += "mLayout width=" + mLayout.getWidth()
7774                        + " height=" + mLayout.getHeight();
7775            }
7776        } else {
7777            output += "mText=NULL";
7778        }
7779        Log.d(VIEW_LOG_TAG, output);
7780    }
7781
7782    /**
7783     * Convenience for {@link Selection#getSelectionStart}.
7784     */
7785    @ViewDebug.ExportedProperty(category = "text")
7786    public int getSelectionStart() {
7787        return Selection.getSelectionStart(getText());
7788    }
7789
7790    /**
7791     * Convenience for {@link Selection#getSelectionEnd}.
7792     */
7793    @ViewDebug.ExportedProperty(category = "text")
7794    public int getSelectionEnd() {
7795        return Selection.getSelectionEnd(getText());
7796    }
7797
7798    /**
7799     * Return true iff there is a selection inside this text view.
7800     */
7801    public boolean hasSelection() {
7802        final int selectionStart = getSelectionStart();
7803        final int selectionEnd = getSelectionEnd();
7804
7805        return selectionStart >= 0 && selectionStart != selectionEnd;
7806    }
7807
7808    String getSelectedText() {
7809        if (!hasSelection()) {
7810            return null;
7811        }
7812
7813        final int start = getSelectionStart();
7814        final int end = getSelectionEnd();
7815        return String.valueOf(
7816                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7817    }
7818
7819    /**
7820     * Sets the properties of this field (lines, horizontally scrolling,
7821     * transformation method) to be for a single-line input.
7822     *
7823     * @attr ref android.R.styleable#TextView_singleLine
7824     */
7825    public void setSingleLine() {
7826        setSingleLine(true);
7827    }
7828
7829    /**
7830     * Sets the properties of this field to transform input to ALL CAPS
7831     * display. This may use a "small caps" formatting if available.
7832     * This setting will be ignored if this field is editable or selectable.
7833     *
7834     * This call replaces the current transformation method. Disabling this
7835     * will not necessarily restore the previous behavior from before this
7836     * was enabled.
7837     *
7838     * @see #setTransformationMethod(TransformationMethod)
7839     * @attr ref android.R.styleable#TextView_textAllCaps
7840     */
7841    public void setAllCaps(boolean allCaps) {
7842        if (allCaps) {
7843            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7844        } else {
7845            setTransformationMethod(null);
7846        }
7847    }
7848
7849    /**
7850     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7851     * transformation method) to be for a single-line input; if false, restores these to the default
7852     * conditions.
7853     *
7854     * Note that the default conditions are not necessarily those that were in effect prior this
7855     * method, and you may want to reset these properties to your custom values.
7856     *
7857     * @attr ref android.R.styleable#TextView_singleLine
7858     */
7859    @android.view.RemotableViewMethod
7860    public void setSingleLine(boolean singleLine) {
7861        // Could be used, but may break backward compatibility.
7862        // if (mSingleLine == singleLine) return;
7863        setInputTypeSingleLine(singleLine);
7864        applySingleLine(singleLine, true, true);
7865    }
7866
7867    /**
7868     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7869     * @param singleLine
7870     */
7871    private void setInputTypeSingleLine(boolean singleLine) {
7872        if (mEditor != null &&
7873                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7874            if (singleLine) {
7875                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7876            } else {
7877                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7878            }
7879        }
7880    }
7881
7882    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7883            boolean changeMaxLines) {
7884        mSingleLine = singleLine;
7885        if (singleLine) {
7886            setLines(1);
7887            setHorizontallyScrolling(true);
7888            if (applyTransformation) {
7889                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7890            }
7891        } else {
7892            if (changeMaxLines) {
7893                setMaxLines(Integer.MAX_VALUE);
7894            }
7895            setHorizontallyScrolling(false);
7896            if (applyTransformation) {
7897                setTransformationMethod(null);
7898            }
7899        }
7900    }
7901
7902    /**
7903     * Causes words in the text that are longer than the view's width
7904     * to be ellipsized instead of broken in the middle.  You may also
7905     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7906     * to constrain the text to a single line.  Use <code>null</code>
7907     * to turn off ellipsizing.
7908     *
7909     * If {@link #setMaxLines} has been used to set two or more lines,
7910     * only {@link android.text.TextUtils.TruncateAt#END} and
7911     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7912     * (other ellipsizing types will not do anything).
7913     *
7914     * @attr ref android.R.styleable#TextView_ellipsize
7915     */
7916    public void setEllipsize(TextUtils.TruncateAt where) {
7917        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7918        if (mEllipsize != where) {
7919            mEllipsize = where;
7920
7921            if (mLayout != null) {
7922                nullLayouts();
7923                requestLayout();
7924                invalidate();
7925            }
7926        }
7927    }
7928
7929    /**
7930     * Sets how many times to repeat the marquee animation. Only applied if the
7931     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7932     *
7933     * @see #getMarqueeRepeatLimit()
7934     *
7935     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7936     */
7937    public void setMarqueeRepeatLimit(int marqueeLimit) {
7938        mMarqueeRepeatLimit = marqueeLimit;
7939    }
7940
7941    /**
7942     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7943     * TextView has marquee enabled.
7944     *
7945     * @return the number of times the marquee animation is repeated. -1 if the animation
7946     * repeats indefinitely
7947     *
7948     * @see #setMarqueeRepeatLimit(int)
7949     *
7950     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7951     */
7952    public int getMarqueeRepeatLimit() {
7953        return mMarqueeRepeatLimit;
7954    }
7955
7956    /**
7957     * Returns where, if anywhere, words that are longer than the view
7958     * is wide should be ellipsized.
7959     */
7960    @ViewDebug.ExportedProperty
7961    public TextUtils.TruncateAt getEllipsize() {
7962        return mEllipsize;
7963    }
7964
7965    /**
7966     * Set the TextView so that when it takes focus, all the text is
7967     * selected.
7968     *
7969     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7970     */
7971    @android.view.RemotableViewMethod
7972    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7973        createEditorIfNeeded();
7974        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7975
7976        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7977            setText(mText, BufferType.SPANNABLE);
7978        }
7979    }
7980
7981    /**
7982     * Set whether the cursor is visible. The default is true. Note that this property only
7983     * makes sense for editable TextView.
7984     *
7985     * @see #isCursorVisible()
7986     *
7987     * @attr ref android.R.styleable#TextView_cursorVisible
7988     */
7989    @android.view.RemotableViewMethod
7990    public void setCursorVisible(boolean visible) {
7991        if (visible && mEditor == null) return; // visible is the default value with no edit data
7992        createEditorIfNeeded();
7993        if (mEditor.mCursorVisible != visible) {
7994            mEditor.mCursorVisible = visible;
7995            invalidate();
7996
7997            mEditor.makeBlink();
7998
7999            // InsertionPointCursorController depends on mCursorVisible
8000            mEditor.prepareCursorControllers();
8001        }
8002    }
8003
8004    /**
8005     * @return whether or not the cursor is visible (assuming this TextView is editable)
8006     *
8007     * @see #setCursorVisible(boolean)
8008     *
8009     * @attr ref android.R.styleable#TextView_cursorVisible
8010     */
8011    public boolean isCursorVisible() {
8012        // true is the default value
8013        return mEditor == null ? true : mEditor.mCursorVisible;
8014    }
8015
8016    private boolean canMarquee() {
8017        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
8018        return width > 0 && (mLayout.getLineWidth(0) > width ||
8019                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
8020                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
8021    }
8022
8023    private void startMarquee() {
8024        // Do not ellipsize EditText
8025        if (getKeyListener() != null) return;
8026
8027        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
8028            return;
8029        }
8030
8031        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
8032                getLineCount() == 1 && canMarquee()) {
8033
8034            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8035                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
8036                final Layout tmp = mLayout;
8037                mLayout = mSavedMarqueeModeLayout;
8038                mSavedMarqueeModeLayout = tmp;
8039                setHorizontalFadingEdgeEnabled(true);
8040                requestLayout();
8041                invalidate();
8042            }
8043
8044            if (mMarquee == null) mMarquee = new Marquee(this);
8045            mMarquee.start(mMarqueeRepeatLimit);
8046        }
8047    }
8048
8049    private void stopMarquee() {
8050        if (mMarquee != null && !mMarquee.isStopped()) {
8051            mMarquee.stop();
8052        }
8053
8054        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
8055            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8056            final Layout tmp = mSavedMarqueeModeLayout;
8057            mSavedMarqueeModeLayout = mLayout;
8058            mLayout = tmp;
8059            setHorizontalFadingEdgeEnabled(false);
8060            requestLayout();
8061            invalidate();
8062        }
8063    }
8064
8065    private void startStopMarquee(boolean start) {
8066        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8067            if (start) {
8068                startMarquee();
8069            } else {
8070                stopMarquee();
8071            }
8072        }
8073    }
8074
8075    /**
8076     * This method is called when the text is changed, in case any subclasses
8077     * would like to know.
8078     *
8079     * Within <code>text</code>, the <code>lengthAfter</code> characters
8080     * beginning at <code>start</code> have just replaced old text that had
8081     * length <code>lengthBefore</code>. It is an error to attempt to make
8082     * changes to <code>text</code> from this callback.
8083     *
8084     * @param text The text the TextView is displaying
8085     * @param start The offset of the start of the range of the text that was
8086     * modified
8087     * @param lengthBefore The length of the former text that has been replaced
8088     * @param lengthAfter The length of the replacement modified text
8089     */
8090    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8091        // intentionally empty, template pattern method can be overridden by subclasses
8092    }
8093
8094    /**
8095     * This method is called when the selection has changed, in case any
8096     * subclasses would like to know.
8097     *
8098     * @param selStart The new selection start location.
8099     * @param selEnd The new selection end location.
8100     */
8101    protected void onSelectionChanged(int selStart, int selEnd) {
8102        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8103    }
8104
8105    /**
8106     * Adds a TextWatcher to the list of those whose methods are called
8107     * whenever this TextView's text changes.
8108     * <p>
8109     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8110     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8111     * if there are any text changed listeners forces the buffer type to
8112     * Editable if it would not otherwise be and does call this method.
8113     */
8114    public void addTextChangedListener(TextWatcher watcher) {
8115        if (mListeners == null) {
8116            mListeners = new ArrayList<TextWatcher>();
8117        }
8118
8119        mListeners.add(watcher);
8120    }
8121
8122    /**
8123     * Removes the specified TextWatcher from the list of those whose
8124     * methods are called
8125     * whenever this TextView's text changes.
8126     */
8127    public void removeTextChangedListener(TextWatcher watcher) {
8128        if (mListeners != null) {
8129            int i = mListeners.indexOf(watcher);
8130
8131            if (i >= 0) {
8132                mListeners.remove(i);
8133            }
8134        }
8135    }
8136
8137    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8138        if (mListeners != null) {
8139            final ArrayList<TextWatcher> list = mListeners;
8140            final int count = list.size();
8141            for (int i = 0; i < count; i++) {
8142                list.get(i).beforeTextChanged(text, start, before, after);
8143            }
8144        }
8145
8146        // The spans that are inside or intersect the modified region no longer make sense
8147        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8148        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8149    }
8150
8151    // Removes all spans that are inside or actually overlap the start..end range
8152    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8153        if (!(mText instanceof Editable)) return;
8154        Editable text = (Editable) mText;
8155
8156        T[] spans = text.getSpans(start, end, type);
8157        final int length = spans.length;
8158        for (int i = 0; i < length; i++) {
8159            final int spanStart = text.getSpanStart(spans[i]);
8160            final int spanEnd = text.getSpanEnd(spans[i]);
8161            if (spanEnd == start || spanStart == end) break;
8162            text.removeSpan(spans[i]);
8163        }
8164    }
8165
8166    void removeAdjacentSuggestionSpans(final int pos) {
8167        if (!(mText instanceof Editable)) return;
8168        final Editable text = (Editable) mText;
8169
8170        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8171        final int length = spans.length;
8172        for (int i = 0; i < length; i++) {
8173            final int spanStart = text.getSpanStart(spans[i]);
8174            final int spanEnd = text.getSpanEnd(spans[i]);
8175            if (spanEnd == pos || spanStart == pos) {
8176                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8177                    text.removeSpan(spans[i]);
8178                }
8179            }
8180        }
8181    }
8182
8183    /**
8184     * Not private so it can be called from an inner class without going
8185     * through a thunk.
8186     */
8187    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8188        if (mListeners != null) {
8189            final ArrayList<TextWatcher> list = mListeners;
8190            final int count = list.size();
8191            for (int i = 0; i < count; i++) {
8192                list.get(i).onTextChanged(text, start, before, after);
8193            }
8194        }
8195
8196        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8197    }
8198
8199    /**
8200     * Not private so it can be called from an inner class without going
8201     * through a thunk.
8202     */
8203    void sendAfterTextChanged(Editable text) {
8204        if (mListeners != null) {
8205            final ArrayList<TextWatcher> list = mListeners;
8206            final int count = list.size();
8207            for (int i = 0; i < count; i++) {
8208                list.get(i).afterTextChanged(text);
8209            }
8210        }
8211        hideErrorIfUnchanged();
8212    }
8213
8214    void updateAfterEdit() {
8215        invalidate();
8216        int curs = getSelectionStart();
8217
8218        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8219            registerForPreDraw();
8220        }
8221
8222        checkForResize();
8223
8224        if (curs >= 0) {
8225            mHighlightPathBogus = true;
8226            if (mEditor != null) mEditor.makeBlink();
8227            bringPointIntoView(curs);
8228        }
8229    }
8230
8231    /**
8232     * Not private so it can be called from an inner class without going
8233     * through a thunk.
8234     */
8235    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8236        sLastCutCopyOrTextChangedTime = 0;
8237
8238        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8239        if (ims == null || ims.mBatchEditNesting == 0) {
8240            updateAfterEdit();
8241        }
8242        if (ims != null) {
8243            ims.mContentChanged = true;
8244            if (ims.mChangedStart < 0) {
8245                ims.mChangedStart = start;
8246                ims.mChangedEnd = start+before;
8247            } else {
8248                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8249                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8250            }
8251            ims.mChangedDelta += after-before;
8252        }
8253        resetErrorChangedFlag();
8254        sendOnTextChanged(buffer, start, before, after);
8255        onTextChanged(buffer, start, before, after);
8256    }
8257
8258    /**
8259     * Not private so it can be called from an inner class without going
8260     * through a thunk.
8261     */
8262    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8263        // XXX Make the start and end move together if this ends up
8264        // spending too much time invalidating.
8265
8266        boolean selChanged = false;
8267        int newSelStart=-1, newSelEnd=-1;
8268
8269        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8270
8271        if (what == Selection.SELECTION_END) {
8272            selChanged = true;
8273            newSelEnd = newStart;
8274
8275            if (oldStart >= 0 || newStart >= 0) {
8276                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8277                checkForResize();
8278                registerForPreDraw();
8279                if (mEditor != null) mEditor.makeBlink();
8280            }
8281        }
8282
8283        if (what == Selection.SELECTION_START) {
8284            selChanged = true;
8285            newSelStart = newStart;
8286
8287            if (oldStart >= 0 || newStart >= 0) {
8288                int end = Selection.getSelectionEnd(buf);
8289                invalidateCursor(end, oldStart, newStart);
8290            }
8291        }
8292
8293        if (selChanged) {
8294            mHighlightPathBogus = true;
8295            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8296
8297            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8298                if (newSelStart < 0) {
8299                    newSelStart = Selection.getSelectionStart(buf);
8300                }
8301                if (newSelEnd < 0) {
8302                    newSelEnd = Selection.getSelectionEnd(buf);
8303                }
8304
8305                if (newSelStart == newSelEnd && hasTransientState()) {
8306                    setHasTransientState(false);
8307                } else if (newSelStart != newSelEnd && !hasTransientState()) {
8308                    setHasTransientState(true);
8309                }
8310
8311                if (mEditor != null) {
8312                    mEditor.refreshTextActionMode();
8313                }
8314                onSelectionChanged(newSelStart, newSelEnd);
8315            }
8316        }
8317
8318        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8319                what instanceof CharacterStyle) {
8320            if (ims == null || ims.mBatchEditNesting == 0) {
8321                invalidate();
8322                mHighlightPathBogus = true;
8323                checkForResize();
8324            } else {
8325                ims.mContentChanged = true;
8326            }
8327            if (mEditor != null) {
8328                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8329                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8330            }
8331        }
8332
8333        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8334            mHighlightPathBogus = true;
8335            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8336                ims.mSelectionModeChanged = true;
8337            }
8338
8339            if (Selection.getSelectionStart(buf) >= 0) {
8340                if (ims == null || ims.mBatchEditNesting == 0) {
8341                    invalidateCursor();
8342                } else {
8343                    ims.mCursorChanged = true;
8344                }
8345            }
8346        }
8347
8348        if (what instanceof ParcelableSpan) {
8349            // If this is a span that can be sent to a remote process,
8350            // the current extract editor would be interested in it.
8351            if (ims != null && ims.mExtractedTextRequest != null) {
8352                if (ims.mBatchEditNesting != 0) {
8353                    if (oldStart >= 0) {
8354                        if (ims.mChangedStart > oldStart) {
8355                            ims.mChangedStart = oldStart;
8356                        }
8357                        if (ims.mChangedStart > oldEnd) {
8358                            ims.mChangedStart = oldEnd;
8359                        }
8360                    }
8361                    if (newStart >= 0) {
8362                        if (ims.mChangedStart > newStart) {
8363                            ims.mChangedStart = newStart;
8364                        }
8365                        if (ims.mChangedStart > newEnd) {
8366                            ims.mChangedStart = newEnd;
8367                        }
8368                    }
8369                } else {
8370                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8371                            + oldStart + "-" + oldEnd + ","
8372                            + newStart + "-" + newEnd + " " + what);
8373                    ims.mContentChanged = true;
8374                }
8375            }
8376        }
8377
8378        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8379                what instanceof SpellCheckSpan) {
8380            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8381        }
8382    }
8383
8384    /**
8385     * @hide
8386     */
8387    @Override
8388    public void dispatchFinishTemporaryDetach() {
8389        mDispatchTemporaryDetach = true;
8390        super.dispatchFinishTemporaryDetach();
8391        mDispatchTemporaryDetach = false;
8392    }
8393
8394    @Override
8395    public void onStartTemporaryDetach() {
8396        super.onStartTemporaryDetach();
8397        // Only track when onStartTemporaryDetach() is called directly,
8398        // usually because this instance is an editable field in a list
8399        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8400
8401        // Tell the editor that we are temporarily detached. It can use this to preserve
8402        // selection state as needed.
8403        if (mEditor != null) mEditor.mTemporaryDetach = true;
8404    }
8405
8406    @Override
8407    public void onFinishTemporaryDetach() {
8408        super.onFinishTemporaryDetach();
8409        // Only track when onStartTemporaryDetach() is called directly,
8410        // usually because this instance is an editable field in a list
8411        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8412        if (mEditor != null) mEditor.mTemporaryDetach = false;
8413    }
8414
8415    @Override
8416    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8417        if (mTemporaryDetach) {
8418            // If we are temporarily in the detach state, then do nothing.
8419            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8420            return;
8421        }
8422
8423        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8424
8425        if (focused) {
8426            if (mText instanceof Spannable) {
8427                Spannable sp = (Spannable) mText;
8428                MetaKeyKeyListener.resetMetaState(sp);
8429            }
8430        }
8431
8432        startStopMarquee(focused);
8433
8434        if (mTransformation != null) {
8435            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8436        }
8437
8438        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8439    }
8440
8441    @Override
8442    public void onWindowFocusChanged(boolean hasWindowFocus) {
8443        super.onWindowFocusChanged(hasWindowFocus);
8444
8445        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8446
8447        startStopMarquee(hasWindowFocus);
8448    }
8449
8450    @Override
8451    protected void onVisibilityChanged(View changedView, int visibility) {
8452        super.onVisibilityChanged(changedView, visibility);
8453        if (mEditor != null && visibility != VISIBLE) {
8454            mEditor.hideCursorAndSpanControllers();
8455            stopTextActionMode();
8456        }
8457    }
8458
8459    /**
8460     * Use {@link BaseInputConnection#removeComposingSpans
8461     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8462     * state from this text view.
8463     */
8464    public void clearComposingText() {
8465        if (mText instanceof Spannable) {
8466            BaseInputConnection.removeComposingSpans((Spannable)mText);
8467        }
8468    }
8469
8470    @Override
8471    public void setSelected(boolean selected) {
8472        boolean wasSelected = isSelected();
8473
8474        super.setSelected(selected);
8475
8476        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8477            if (selected) {
8478                startMarquee();
8479            } else {
8480                stopMarquee();
8481            }
8482        }
8483    }
8484
8485    @Override
8486    public boolean onTouchEvent(MotionEvent event) {
8487        final int action = event.getActionMasked();
8488        if (mEditor != null) {
8489            mEditor.onTouchEvent(event);
8490
8491            if (mEditor.mSelectionModifierCursorController != null &&
8492                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8493                return true;
8494            }
8495        }
8496
8497        final boolean superResult = super.onTouchEvent(event);
8498
8499        /*
8500         * Don't handle the release after a long press, because it will move the selection away from
8501         * whatever the menu action was trying to affect. If the long press should have triggered an
8502         * insertion action mode, we can now actually show it.
8503         */
8504        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8505            mEditor.mDiscardNextActionUp = false;
8506
8507            if (mEditor.mIsInsertionActionModeStartPending) {
8508                mEditor.startInsertionActionMode();
8509                mEditor.mIsInsertionActionModeStartPending = false;
8510            }
8511            return superResult;
8512        }
8513
8514        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8515                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8516
8517         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8518                && mText instanceof Spannable && mLayout != null) {
8519            boolean handled = false;
8520
8521            if (mMovement != null) {
8522                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8523            }
8524
8525            final boolean textIsSelectable = isTextSelectable();
8526            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8527                // The LinkMovementMethod which should handle taps on links has not been installed
8528                // on non editable text that support text selection.
8529                // We reproduce its behavior here to open links for these.
8530                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8531                        getSelectionEnd(), ClickableSpan.class);
8532
8533                if (links.length > 0) {
8534                    links[0].onClick(this);
8535                    handled = true;
8536                }
8537            }
8538
8539            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8540                // Show the IME, except when selecting in read-only text.
8541                final InputMethodManager imm = InputMethodManager.peekInstance();
8542                viewClicked(imm);
8543                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8544                    handled |= imm != null && imm.showSoftInput(this, 0);
8545                }
8546
8547                // The above condition ensures that the mEditor is not null
8548                mEditor.onTouchUpEvent(event);
8549
8550                handled = true;
8551            }
8552
8553            if (handled) {
8554                return true;
8555            }
8556        }
8557
8558        return superResult;
8559    }
8560
8561    @Override
8562    public boolean onGenericMotionEvent(MotionEvent event) {
8563        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8564            try {
8565                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8566                    return true;
8567                }
8568            } catch (AbstractMethodError ex) {
8569                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8570                // Ignore its absence in case third party applications implemented the
8571                // interface directly.
8572            }
8573        }
8574        return super.onGenericMotionEvent(event);
8575    }
8576
8577    @Override
8578    protected void onCreateContextMenu(ContextMenu menu) {
8579        if (mEditor != null) {
8580            mEditor.onCreateContextMenu(menu);
8581        }
8582    }
8583
8584    @Override
8585    public boolean showContextMenu() {
8586        if (mEditor != null) {
8587            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
8588        }
8589        return super.showContextMenu();
8590    }
8591
8592    @Override
8593    public boolean showContextMenu(float x, float y) {
8594        if (mEditor != null) {
8595            mEditor.setContextMenuAnchor(x, y);
8596        }
8597        return super.showContextMenu(x, y);
8598    }
8599
8600    /**
8601     * @return True iff this TextView contains a text that can be edited, or if this is
8602     * a selectable TextView.
8603     */
8604    boolean isTextEditable() {
8605        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8606    }
8607
8608    /**
8609     * Returns true, only while processing a touch gesture, if the initial
8610     * touch down event caused focus to move to the text view and as a result
8611     * its selection changed.  Only valid while processing the touch gesture
8612     * of interest, in an editable text view.
8613     */
8614    public boolean didTouchFocusSelect() {
8615        return mEditor != null && mEditor.mTouchFocusSelected;
8616    }
8617
8618    @Override
8619    public void cancelLongPress() {
8620        super.cancelLongPress();
8621        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8622    }
8623
8624    @Override
8625    public boolean onTrackballEvent(MotionEvent event) {
8626        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8627            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8628                return true;
8629            }
8630        }
8631
8632        return super.onTrackballEvent(event);
8633    }
8634
8635    public void setScroller(Scroller s) {
8636        mScroller = s;
8637    }
8638
8639    @Override
8640    protected float getLeftFadingEdgeStrength() {
8641        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
8642            final Marquee marquee = mMarquee;
8643            if (marquee.shouldDrawLeftFade()) {
8644                return getHorizontalFadingEdgeStrength(marquee.getScroll(), 0.0f);
8645            } else {
8646                return 0.0f;
8647            }
8648        } else if (getLineCount() == 1) {
8649            final float lineLeft = getLayout().getLineLeft(0);
8650            if(lineLeft > mScrollX) return 0.0f;
8651            return getHorizontalFadingEdgeStrength(mScrollX, lineLeft);
8652        }
8653        return super.getLeftFadingEdgeStrength();
8654    }
8655
8656    @Override
8657    protected float getRightFadingEdgeStrength() {
8658        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
8659            final Marquee marquee = mMarquee;
8660            return getHorizontalFadingEdgeStrength(marquee.getMaxFadeScroll(), marquee.getScroll());
8661        } else if (getLineCount() == 1) {
8662            final float rightEdge = mScrollX + (getWidth() - getCompoundPaddingLeft() -
8663                    getCompoundPaddingRight());
8664            final float lineRight = getLayout().getLineRight(0);
8665            if(lineRight < rightEdge) return 0.0f;
8666            return getHorizontalFadingEdgeStrength(rightEdge, lineRight);
8667        }
8668        return super.getRightFadingEdgeStrength();
8669    }
8670
8671    /**
8672     * Calculates the fading edge strength as the ratio of the distance between two
8673     * horizontal positions to {@link View#getHorizontalFadingEdgeLength()}. Uses the absolute
8674     * value for the distance calculation.
8675     *
8676     * @param position1 A horizontal position.
8677     * @param position2 A horizontal position.
8678     * @return Fading edge strength between [0.0f, 1.0f].
8679     */
8680    @FloatRange(from=0.0, to=1.0)
8681    private final float getHorizontalFadingEdgeStrength(float position1, float position2) {
8682        final int horizontalFadingEdgeLength = getHorizontalFadingEdgeLength();
8683        if(horizontalFadingEdgeLength == 0) return 0.0f;
8684        final float diff = Math.abs(position1 - position2);
8685        if(diff > horizontalFadingEdgeLength) return 1.0f;
8686        return diff / horizontalFadingEdgeLength;
8687    }
8688
8689    private final boolean isMarqueeFadeEnabled() {
8690        return mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8691                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8692    }
8693
8694    @Override
8695    protected int computeHorizontalScrollRange() {
8696        if (mLayout != null) {
8697            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8698                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8699        }
8700
8701        return super.computeHorizontalScrollRange();
8702    }
8703
8704    @Override
8705    protected int computeVerticalScrollRange() {
8706        if (mLayout != null)
8707            return mLayout.getHeight();
8708
8709        return super.computeVerticalScrollRange();
8710    }
8711
8712    @Override
8713    protected int computeVerticalScrollExtent() {
8714        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8715    }
8716
8717    @Override
8718    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8719        super.findViewsWithText(outViews, searched, flags);
8720        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8721                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8722            String searchedLowerCase = searched.toString().toLowerCase();
8723            String textLowerCase = mText.toString().toLowerCase();
8724            if (textLowerCase.contains(searchedLowerCase)) {
8725                outViews.add(this);
8726            }
8727        }
8728    }
8729
8730    public enum BufferType {
8731        NORMAL, SPANNABLE, EDITABLE,
8732    }
8733
8734    /**
8735     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8736     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8737     * if TextView_textColor was not set directly.
8738     *
8739     * @removed
8740     */
8741    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8742        if (attrs == null) {
8743            // Preserve behavior prior to removal of this API.
8744            throw new NullPointerException();
8745        }
8746
8747        // It's not safe to use this method from apps. The parameter 'attrs'
8748        // must have been obtained using the TextView filter array which is not
8749        // available to the SDK. As such, we grab a default TypedArray with the
8750        // right filter instead here.
8751        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8752        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8753        if (colors == null) {
8754            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8755            if (ap != 0) {
8756                final TypedArray appearance = context.obtainStyledAttributes(
8757                        ap, R.styleable.TextAppearance);
8758                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8759                appearance.recycle();
8760            }
8761        }
8762        a.recycle();
8763
8764        return colors;
8765    }
8766
8767    /**
8768     * Returns the default color from the TextView_textColor attribute from the
8769     * AttributeSet, if set, or the default color from the
8770     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8771     * TextView_textColor was not set directly.
8772     *
8773     * @removed
8774     */
8775    public static int getTextColor(Context context, TypedArray attrs, int def) {
8776        final ColorStateList colors = getTextColors(context, attrs);
8777        if (colors == null) {
8778            return def;
8779        } else {
8780            return colors.getDefaultColor();
8781        }
8782    }
8783
8784    @Override
8785    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8786        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8787            // Handle Ctrl-only shortcuts.
8788            switch (keyCode) {
8789            case KeyEvent.KEYCODE_A:
8790                if (canSelectText()) {
8791                    return onTextContextMenuItem(ID_SELECT_ALL);
8792                }
8793                break;
8794            case KeyEvent.KEYCODE_Z:
8795                if (canUndo()) {
8796                    return onTextContextMenuItem(ID_UNDO);
8797                }
8798                break;
8799            case KeyEvent.KEYCODE_X:
8800                if (canCut()) {
8801                    return onTextContextMenuItem(ID_CUT);
8802                }
8803                break;
8804            case KeyEvent.KEYCODE_C:
8805                if (canCopy()) {
8806                    return onTextContextMenuItem(ID_COPY);
8807                }
8808                break;
8809            case KeyEvent.KEYCODE_V:
8810                if (canPaste()) {
8811                    return onTextContextMenuItem(ID_PASTE);
8812                }
8813                break;
8814            }
8815        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8816            // Handle Ctrl-Shift shortcuts.
8817            switch (keyCode) {
8818                case KeyEvent.KEYCODE_Z:
8819                    if (canRedo()) {
8820                        return onTextContextMenuItem(ID_REDO);
8821                    }
8822                    break;
8823                case KeyEvent.KEYCODE_V:
8824                    if (canPaste()) {
8825                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8826                    }
8827            }
8828        }
8829        return super.onKeyShortcut(keyCode, event);
8830    }
8831
8832    /**
8833     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8834     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8835     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8836     * sufficient.
8837     */
8838    boolean canSelectText() {
8839        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8840    }
8841
8842    /**
8843     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8844     * The text must be spannable and the movement method must allow for arbitary selection.
8845     *
8846     * See also {@link #canSelectText()}.
8847     */
8848    boolean textCanBeSelected() {
8849        // prepareCursorController() relies on this method.
8850        // If you change this condition, make sure prepareCursorController is called anywhere
8851        // the value of this condition might be changed.
8852        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8853        return isTextEditable() ||
8854                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8855    }
8856
8857    private Locale getTextServicesLocale(boolean allowNullLocale) {
8858        // Start fetching the text services locale asynchronously.
8859        updateTextServicesLocaleAsync();
8860        // If !allowNullLocale and there is no cached text services locale, just return the default
8861        // locale.
8862        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8863                : mCurrentSpellCheckerLocaleCache;
8864    }
8865
8866    /**
8867     * This is a temporary method. Future versions may support multi-locale text.
8868     * Caveat: This method may not return the latest text services locale, but this should be
8869     * acceptable and it's more important to make this method asynchronous.
8870     *
8871     * @return The locale that should be used for a word iterator
8872     * in this TextView, based on the current spell checker settings,
8873     * the current IME's locale, or the system default locale.
8874     * Please note that a word iterator in this TextView is different from another word iterator
8875     * used by SpellChecker.java of TextView. This method should be used for the former.
8876     * @hide
8877     */
8878    // TODO: Support multi-locale
8879    // TODO: Update the text services locale immediately after the keyboard locale is switched
8880    // by catching intent of keyboard switch event
8881    public Locale getTextServicesLocale() {
8882        return getTextServicesLocale(false /* allowNullLocale */);
8883    }
8884
8885    /**
8886     * @return true if this TextView is specialized for showing and interacting with the extracted
8887     * text in a full-screen input method.
8888     * @hide
8889     */
8890    public boolean isInExtractedMode() {
8891        return false;
8892    }
8893
8894    /**
8895     * This is a temporary method. Future versions may support multi-locale text.
8896     * Caveat: This method may not return the latest spell checker locale, but this should be
8897     * acceptable and it's more important to make this method asynchronous.
8898     *
8899     * @return The locale that should be used for a spell checker in this TextView,
8900     * based on the current spell checker settings, the current IME's locale, or the system default
8901     * locale.
8902     * @hide
8903     */
8904    public Locale getSpellCheckerLocale() {
8905        return getTextServicesLocale(true /* allowNullLocale */);
8906    }
8907
8908    private void updateTextServicesLocaleAsync() {
8909        // AsyncTask.execute() uses a serial executor which means we don't have
8910        // to lock around updateTextServicesLocaleLocked() to prevent it from
8911        // being executed n times in parallel.
8912        AsyncTask.execute(new Runnable() {
8913            @Override
8914            public void run() {
8915                updateTextServicesLocaleLocked();
8916            }
8917        });
8918    }
8919
8920    private void updateTextServicesLocaleLocked() {
8921        final TextServicesManager textServicesManager = (TextServicesManager)
8922                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8923        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8924        final Locale locale;
8925        if (subtype != null) {
8926            locale = subtype.getLocaleObject();
8927        } else {
8928            locale = null;
8929        }
8930        mCurrentSpellCheckerLocaleCache = locale;
8931    }
8932
8933    void onLocaleChanged() {
8934        mEditor.onLocaleChanged();
8935    }
8936
8937    /**
8938     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8939     * Made available to achieve a consistent behavior.
8940     * @hide
8941     */
8942    public WordIterator getWordIterator() {
8943        if (mEditor != null) {
8944            return mEditor.getWordIterator();
8945        } else {
8946            return null;
8947        }
8948    }
8949
8950    /** @hide */
8951    @Override
8952    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8953        super.onPopulateAccessibilityEventInternal(event);
8954
8955        final CharSequence text = getTextForAccessibility();
8956        if (!TextUtils.isEmpty(text)) {
8957            event.getText().add(text);
8958        }
8959    }
8960
8961    /**
8962     * @return true if the user has explicitly allowed accessibility services
8963     * to speak passwords.
8964     */
8965    private boolean shouldSpeakPasswordsForAccessibility() {
8966        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8967                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8968                UserHandle.USER_CURRENT_OR_SELF) == 1);
8969    }
8970
8971    @Override
8972    public CharSequence getAccessibilityClassName() {
8973        return TextView.class.getName();
8974    }
8975
8976    @Override
8977    public void onProvideStructure(ViewStructure structure) {
8978        super.onProvideStructure(structure);
8979        final boolean isPassword = hasPasswordTransformationMethod()
8980                || isPasswordInputType(getInputType());
8981        if (!isPassword) {
8982            if (mLayout == null) {
8983                assumeLayout();
8984            }
8985            Layout layout = mLayout;
8986            final int lineCount = layout.getLineCount();
8987            if (lineCount <= 1) {
8988                // Simple case: this is a single line.
8989                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8990            } else {
8991                // Complex case: multi-line, could be scrolled or within a scroll container
8992                // so some lines are not visible.
8993                final int[] tmpCords = new int[2];
8994                getLocationInWindow(tmpCords);
8995                final int topWindowLocation = tmpCords[1];
8996                View root = this;
8997                ViewParent viewParent = getParent();
8998                while (viewParent instanceof View) {
8999                    root = (View) viewParent;
9000                    viewParent = root.getParent();
9001                }
9002                final int windowHeight = root.getHeight();
9003                final int topLine;
9004                final int bottomLine;
9005                if (topWindowLocation >= 0) {
9006                    // The top of the view is fully within its window; start text at line 0.
9007                    topLine = getLineAtCoordinateUnclamped(0);
9008                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
9009                } else {
9010                    // The top of hte window has scrolled off the top of the window; figure out
9011                    // the starting line for this.
9012                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
9013                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
9014                }
9015                // We want to return some contextual lines above/below the lines that are
9016                // actually visible.
9017                int expandedTopLine = topLine - (bottomLine-topLine)/2;
9018                if (expandedTopLine < 0) {
9019                    expandedTopLine = 0;
9020                }
9021                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
9022                if (expandedBottomLine >= lineCount) {
9023                    expandedBottomLine = lineCount-1;
9024                }
9025                // Convert lines into character offsets.
9026                int expandedTopChar = layout.getLineStart(expandedTopLine);
9027                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
9028                // Take into account selection -- if there is a selection, we need to expand
9029                // the text we are returning to include that selection.
9030                final int selStart = getSelectionStart();
9031                final int selEnd = getSelectionEnd();
9032                if (selStart < selEnd) {
9033                    if (selStart < expandedTopChar) {
9034                        expandedTopChar = selStart;
9035                    }
9036                    if (selEnd > expandedBottomChar) {
9037                        expandedBottomChar = selEnd;
9038                    }
9039                }
9040                // Get the text and trim it to the range we are reporting.
9041                CharSequence text = getText();
9042                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
9043                    text = text.subSequence(expandedTopChar, expandedBottomChar);
9044                }
9045                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
9046                final int[] lineOffsets = new int[bottomLine-topLine+1];
9047                final int[] lineBaselines = new int[bottomLine-topLine+1];
9048                final int baselineOffset = getBaselineOffset();
9049                for (int i=topLine; i<=bottomLine; i++) {
9050                    lineOffsets[i-topLine] = layout.getLineStart(i);
9051                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
9052                }
9053                structure.setTextLines(lineOffsets, lineBaselines);
9054            }
9055
9056            // Extract style information that applies to the TextView as a whole.
9057            int style = 0;
9058            int typefaceStyle = getTypefaceStyle();
9059            if ((typefaceStyle & Typeface.BOLD) != 0) {
9060                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9061            }
9062            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9063                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9064            }
9065
9066            // Global styles can also be set via TextView.setPaintFlags().
9067            int paintFlags = mTextPaint.getFlags();
9068            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9069                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9070            }
9071            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9072                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9073            }
9074            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9075                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9076            }
9077
9078            // TextView does not have its own text background color. A background is either part
9079            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9080            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9081                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9082        }
9083        structure.setHint(getHint());
9084    }
9085
9086    /** @hide */
9087    @Override
9088    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9089        super.onInitializeAccessibilityEventInternal(event);
9090
9091        final boolean isPassword = hasPasswordTransformationMethod();
9092        event.setPassword(isPassword);
9093
9094        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9095            event.setFromIndex(Selection.getSelectionStart(mText));
9096            event.setToIndex(Selection.getSelectionEnd(mText));
9097            event.setItemCount(mText.length());
9098        }
9099    }
9100
9101    /** @hide */
9102    @Override
9103    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9104        super.onInitializeAccessibilityNodeInfoInternal(info);
9105
9106        final boolean isPassword = hasPasswordTransformationMethod();
9107        info.setPassword(isPassword);
9108        info.setText(getTextForAccessibility());
9109
9110        if (mBufferType == BufferType.EDITABLE) {
9111            info.setEditable(true);
9112        }
9113
9114        if (mEditor != null) {
9115            info.setInputType(mEditor.mInputType);
9116
9117            if (mEditor.mError != null) {
9118                info.setContentInvalid(true);
9119                info.setError(mEditor.mError);
9120            }
9121        }
9122
9123        if (!TextUtils.isEmpty(mText)) {
9124            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9125            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9126            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9127                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9128                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9129                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9130                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9131            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9132        }
9133
9134        if (isFocused()) {
9135            if (canCopy()) {
9136                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9137            }
9138            if (canPaste()) {
9139                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9140            }
9141            if (canCut()) {
9142                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9143            }
9144            if (canShare()) {
9145                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9146                        ACCESSIBILITY_ACTION_SHARE,
9147                        getResources().getString(com.android.internal.R.string.share)));
9148            }
9149            if (canProcessText()) {  // also implies mEditor is not null.
9150                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9151            }
9152        }
9153
9154        // Check for known input filter types.
9155        final int numFilters = mFilters.length;
9156        for (int i = 0; i < numFilters; i++) {
9157            final InputFilter filter = mFilters[i];
9158            if (filter instanceof InputFilter.LengthFilter) {
9159                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9160            }
9161        }
9162
9163        if (!isSingleLine()) {
9164            info.setMultiLine(true);
9165        }
9166    }
9167
9168    /**
9169     * Performs an accessibility action after it has been offered to the
9170     * delegate.
9171     *
9172     * @hide
9173     */
9174    @Override
9175    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9176        if (mEditor != null
9177                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9178            return true;
9179        }
9180        switch (action) {
9181            case AccessibilityNodeInfo.ACTION_CLICK: {
9182                return performAccessibilityActionClick(arguments);
9183            }
9184            case AccessibilityNodeInfo.ACTION_COPY: {
9185                if (isFocused() && canCopy()) {
9186                    if (onTextContextMenuItem(ID_COPY)) {
9187                        return true;
9188                    }
9189                }
9190            } return false;
9191            case AccessibilityNodeInfo.ACTION_PASTE: {
9192                if (isFocused() && canPaste()) {
9193                    if (onTextContextMenuItem(ID_PASTE)) {
9194                        return true;
9195                    }
9196                }
9197            } return false;
9198            case AccessibilityNodeInfo.ACTION_CUT: {
9199                if (isFocused() && canCut()) {
9200                    if (onTextContextMenuItem(ID_CUT)) {
9201                        return true;
9202                    }
9203                }
9204            } return false;
9205            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9206                ensureIterableTextForAccessibilitySelectable();
9207                CharSequence text = getIterableTextForAccessibility();
9208                if (text == null) {
9209                    return false;
9210                }
9211                final int start = (arguments != null) ? arguments.getInt(
9212                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9213                final int end = (arguments != null) ? arguments.getInt(
9214                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9215                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9216                    // No arguments clears the selection.
9217                    if (start == end && end == -1) {
9218                        Selection.removeSelection((Spannable) text);
9219                        return true;
9220                    }
9221                    if (start >= 0 && start <= end && end <= text.length()) {
9222                        Selection.setSelection((Spannable) text, start, end);
9223                        // Make sure selection mode is engaged.
9224                        if (mEditor != null) {
9225                            mEditor.startSelectionActionMode();
9226                        }
9227                        return true;
9228                    }
9229                }
9230            } return false;
9231            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9232            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9233                ensureIterableTextForAccessibilitySelectable();
9234                return super.performAccessibilityActionInternal(action, arguments);
9235            }
9236            case ACCESSIBILITY_ACTION_SHARE: {
9237                if (isFocused() && canShare()) {
9238                    if (onTextContextMenuItem(ID_SHARE)) {
9239                        return true;
9240                    }
9241                }
9242            } return false;
9243            default: {
9244                return super.performAccessibilityActionInternal(action, arguments);
9245            }
9246        }
9247    }
9248
9249    private boolean performAccessibilityActionClick(Bundle arguments) {
9250        boolean handled = false;
9251        boolean processed = false;
9252
9253        if (!isEnabled()) {
9254            return false;
9255        }
9256
9257        if (arguments != null && arguments.containsKey(
9258                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT)) {
9259            int spanIndex = arguments.getInt(
9260                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT, -1);
9261            if (spanIndex >= 0 && hasSpannableText()) {
9262                ClickableSpan[] spans = ((Spannable) mText).getSpans(0,
9263                        mText.length(), ClickableSpan.class);
9264                if (spans != null && spans.length > spanIndex && spans[spanIndex] != null) {
9265                    // Simulate View.onTouchEvent for an ACTION_UP event
9266                    if (isFocusable() && !isFocused()) {
9267                        requestFocus();
9268                    }
9269                    spans[spanIndex].onClick(this);
9270                    handled = true;
9271                }
9272            }
9273            processed = true;
9274        }
9275
9276        if (!processed && arguments != null &&  arguments.containsKey(
9277                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT)) {
9278            int characterIndex = arguments.getInt(
9279                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT, -1);
9280            if (characterIndex >= 0 && hasSpannableText()) {
9281                ClickableSpan[] spans = ((Spannable) mText).getSpans(characterIndex,
9282                        characterIndex, ClickableSpan.class);
9283                // click only on the first span to keep parity with onTouch() implementation
9284                if (spans != null && spans.length > 0 && spans[0] != null) {
9285                    // Simulate View.onTouchEvent for an ACTION_UP event
9286                    if (isFocusable() && !isFocused()) {
9287                        requestFocus();
9288                    }
9289                    spans[0].onClick(this);
9290                    handled = true;
9291                }
9292            }
9293            processed = true;
9294        }
9295
9296        if (!processed && (isClickable() || isLongClickable())) {
9297            // Simulate View.onTouchEvent for an ACTION_UP event
9298            if (isFocusable() && !isFocused()) {
9299                requestFocus();
9300            }
9301
9302            performClick();
9303            handled = true;
9304        }
9305
9306        // Show the IME, except when selecting in read-only text.
9307        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9308                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9309            final InputMethodManager imm = InputMethodManager.peekInstance();
9310            viewClicked(imm);
9311            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9312                handled |= imm.showSoftInput(this, 0);
9313            }
9314        }
9315
9316        return handled;
9317    }
9318
9319    private boolean hasSpannableText() {
9320        return mText != null && mText instanceof Spannable;
9321    }
9322
9323    /** @hide */
9324    @Override
9325    public void sendAccessibilityEventInternal(int eventType) {
9326        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9327            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9328        }
9329
9330        // Do not send scroll events since first they are not interesting for
9331        // accessibility and second such events a generated too frequently.
9332        // For details see the implementation of bringTextIntoView().
9333        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9334            return;
9335        }
9336        super.sendAccessibilityEventInternal(eventType);
9337    }
9338
9339    /**
9340     * Returns the text that should be exposed to accessibility services.
9341     * <p>
9342     * This approximates what is displayed visually. If the user has specified
9343     * that accessibility services should speak passwords, this method will
9344     * bypass any password transformation method and return unobscured text.
9345     *
9346     * @return the text that should be exposed to accessibility services, may
9347     *         be {@code null} if no text is set
9348     */
9349    @Nullable
9350    private CharSequence getTextForAccessibility() {
9351        // If the text is empty, we must be showing the hint text.
9352        if (TextUtils.isEmpty(mText)) {
9353            return mHint;
9354        }
9355
9356        // Check whether we need to bypass the transformation
9357        // method and expose unobscured text.
9358        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9359            return mText;
9360        }
9361
9362        // Otherwise, speak whatever text is being displayed.
9363        return mTransformed;
9364    }
9365
9366    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9367            int fromIndex, int removedCount, int addedCount) {
9368        AccessibilityEvent event =
9369                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9370        event.setFromIndex(fromIndex);
9371        event.setRemovedCount(removedCount);
9372        event.setAddedCount(addedCount);
9373        event.setBeforeText(beforeText);
9374        sendAccessibilityEventUnchecked(event);
9375    }
9376
9377    /**
9378     * Returns whether this text view is a current input method target.  The
9379     * default implementation just checks with {@link InputMethodManager}.
9380     */
9381    public boolean isInputMethodTarget() {
9382        InputMethodManager imm = InputMethodManager.peekInstance();
9383        return imm != null && imm.isActive(this);
9384    }
9385
9386    static final int ID_SELECT_ALL = android.R.id.selectAll;
9387    static final int ID_UNDO = android.R.id.undo;
9388    static final int ID_REDO = android.R.id.redo;
9389    static final int ID_CUT = android.R.id.cut;
9390    static final int ID_COPY = android.R.id.copy;
9391    static final int ID_PASTE = android.R.id.paste;
9392    static final int ID_SHARE = android.R.id.shareText;
9393    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9394    static final int ID_REPLACE = android.R.id.replaceText;
9395
9396    /**
9397     * Called when a context menu option for the text view is selected.  Currently
9398     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9399     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9400     *
9401     * @return true if the context menu item action was performed.
9402     */
9403    public boolean onTextContextMenuItem(int id) {
9404        int min = 0;
9405        int max = mText.length();
9406
9407        if (isFocused()) {
9408            final int selStart = getSelectionStart();
9409            final int selEnd = getSelectionEnd();
9410
9411            min = Math.max(0, Math.min(selStart, selEnd));
9412            max = Math.max(0, Math.max(selStart, selEnd));
9413        }
9414
9415        switch (id) {
9416            case ID_SELECT_ALL:
9417                selectAllText();
9418                return true;
9419
9420            case ID_UNDO:
9421                if (mEditor != null) {
9422                    mEditor.undo();
9423                }
9424                return true;  // Returns true even if nothing was undone.
9425
9426            case ID_REDO:
9427                if (mEditor != null) {
9428                    mEditor.redo();
9429                }
9430                return true;  // Returns true even if nothing was undone.
9431
9432            case ID_PASTE:
9433                paste(min, max, true /* withFormatting */);
9434                return true;
9435
9436            case ID_PASTE_AS_PLAIN_TEXT:
9437                paste(min, max, false /* withFormatting */);
9438                return true;
9439
9440            case ID_CUT:
9441                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9442                deleteText_internal(min, max);
9443                return true;
9444
9445            case ID_COPY:
9446                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9447                stopTextActionMode();
9448                return true;
9449
9450            case ID_REPLACE:
9451                if (mEditor != null) {
9452                    mEditor.replace();
9453                }
9454                return true;
9455
9456            case ID_SHARE:
9457                shareSelectedText();
9458                return true;
9459        }
9460        return false;
9461    }
9462
9463    CharSequence getTransformedText(int start, int end) {
9464        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9465    }
9466
9467    @Override
9468    public boolean performLongClick() {
9469        boolean handled = false;
9470
9471        if (mEditor != null) {
9472            mEditor.mIsBeingLongClicked = true;
9473        }
9474
9475        if (super.performLongClick()) {
9476            handled = true;
9477        }
9478
9479        if (mEditor != null) {
9480            handled |= mEditor.performLongClick(handled);
9481            mEditor.mIsBeingLongClicked = false;
9482        }
9483
9484        if (handled) {
9485            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9486            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9487        }
9488
9489        return handled;
9490    }
9491
9492    @Override
9493    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9494        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9495        if (mEditor != null) {
9496            mEditor.onScrollChanged();
9497        }
9498    }
9499
9500    /**
9501     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9502     * by the IME or by the spell checker as the user types. This is done by adding
9503     * {@link SuggestionSpan}s to the text.
9504     *
9505     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9506     * user asks for them on these parts of the text. This value depends on the inputType of this
9507     * TextView.
9508     *
9509     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9510     *
9511     * In addition, the type variation must be one of
9512     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9513     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9514     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9515     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9516     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9517     *
9518     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9519     *
9520     * @return true if the suggestions popup window is enabled, based on the inputType.
9521     */
9522    public boolean isSuggestionsEnabled() {
9523        if (mEditor == null) return false;
9524        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9525            return false;
9526        }
9527        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9528
9529        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9530        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9531                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9532                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9533                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9534                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9535    }
9536
9537    /**
9538     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9539     * selection is initiated in this View.
9540     *
9541     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9542     * Paste, Replace and Share actions, depending on what this View supports.
9543     *
9544     * <p>A custom implementation can add new entries in the default menu in its
9545     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9546     * method. The default actions can also be removed from the menu using
9547     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9548     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9549     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9550     *
9551     * <p>Returning false from
9552     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9553     * will prevent the action mode from being started.
9554     *
9555     * <p>Action click events should be handled by the custom implementation of
9556     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9557     * android.view.MenuItem)}.
9558     *
9559     * <p>Note that text selection mode is not started when a TextView receives focus and the
9560     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9561     * that case, to allow for quick replacement.
9562     */
9563    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9564        createEditorIfNeeded();
9565        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9566    }
9567
9568    /**
9569     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9570     *
9571     * @return The current custom selection callback.
9572     */
9573    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9574        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9575    }
9576
9577    /**
9578     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9579     * insertion is initiated in this View.
9580     * The standard implementation populates the menu with a subset of Select All,
9581     * Paste and Replace actions, depending on what this View supports.
9582     *
9583     * <p>A custom implementation can add new entries in the default menu in its
9584     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9585     * android.view.Menu)} method. The default actions can also be removed from the menu using
9586     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9587     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9588     *
9589     * <p>Returning false from
9590     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9591     * android.view.Menu)} will prevent the action mode from being started.</p>
9592     *
9593     * <p>Action click events should be handled by the custom implementation of
9594     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9595     * android.view.MenuItem)}.</p>
9596     *
9597     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9598     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9599     */
9600    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9601        createEditorIfNeeded();
9602        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9603    }
9604
9605    /**
9606     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9607     *
9608     * @return The current custom insertion callback.
9609     */
9610    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9611        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9612    }
9613
9614    /**
9615     * @hide
9616     */
9617    protected void stopTextActionMode() {
9618        if (mEditor != null) {
9619            mEditor.stopTextActionMode();
9620        }
9621    }
9622
9623    boolean canUndo() {
9624        return mEditor != null && mEditor.canUndo();
9625    }
9626
9627    boolean canRedo() {
9628        return mEditor != null && mEditor.canRedo();
9629    }
9630
9631    boolean canCut() {
9632        if (hasPasswordTransformationMethod()) {
9633            return false;
9634        }
9635
9636        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9637                mEditor.mKeyListener != null) {
9638            return true;
9639        }
9640
9641        return false;
9642    }
9643
9644    boolean canCopy() {
9645        if (hasPasswordTransformationMethod()) {
9646            return false;
9647        }
9648
9649        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9650            return true;
9651        }
9652
9653        return false;
9654    }
9655
9656    boolean canShare() {
9657        if (!getContext().canStartActivityForResult() || !isDeviceProvisioned()) {
9658            return false;
9659        }
9660        return canCopy();
9661    }
9662
9663    boolean isDeviceProvisioned() {
9664        if (mDeviceProvisionedState == DEVICE_PROVISIONED_UNKNOWN) {
9665            mDeviceProvisionedState = Settings.Global.getInt(
9666                    mContext.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0
9667                    ? DEVICE_PROVISIONED_YES
9668                    : DEVICE_PROVISIONED_NO;
9669        }
9670        return mDeviceProvisionedState == DEVICE_PROVISIONED_YES;
9671    }
9672
9673    boolean canPaste() {
9674        return (mText instanceof Editable &&
9675                mEditor != null && mEditor.mKeyListener != null &&
9676                getSelectionStart() >= 0 &&
9677                getSelectionEnd() >= 0 &&
9678                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9679                hasPrimaryClip());
9680    }
9681
9682    boolean canProcessText() {
9683        if (getId() == View.NO_ID) {
9684            return false;
9685        }
9686        return canShare();
9687    }
9688
9689    boolean canSelectAllText() {
9690        return canSelectText() && !hasPasswordTransformationMethod()
9691                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9692    }
9693
9694    boolean selectAllText() {
9695        final int length = mText.length();
9696        Selection.setSelection((Spannable) mText, 0, length);
9697        return length > 0;
9698    }
9699
9700    void replaceSelectionWithText(CharSequence text) {
9701        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9702    }
9703
9704    /**
9705     * Paste clipboard content between min and max positions.
9706     */
9707    private void paste(int min, int max, boolean withFormatting) {
9708        ClipboardManager clipboard =
9709            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9710        ClipData clip = clipboard.getPrimaryClip();
9711        if (clip != null) {
9712            boolean didFirst = false;
9713            for (int i=0; i<clip.getItemCount(); i++) {
9714                final CharSequence paste;
9715                if (withFormatting) {
9716                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9717                } else {
9718                    // Get an item as text and remove all spans by toString().
9719                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9720                    paste = (text instanceof Spanned) ? text.toString() : text;
9721                }
9722                if (paste != null) {
9723                    if (!didFirst) {
9724                        Selection.setSelection((Spannable) mText, max);
9725                        ((Editable) mText).replace(min, max, paste);
9726                        didFirst = true;
9727                    } else {
9728                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9729                        ((Editable) mText).insert(getSelectionEnd(), paste);
9730                    }
9731                }
9732            }
9733            sLastCutCopyOrTextChangedTime = 0;
9734        }
9735    }
9736
9737    private void shareSelectedText() {
9738        String selectedText = getSelectedText();
9739        if (selectedText != null && !selectedText.isEmpty()) {
9740            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9741            sharingIntent.setType("text/plain");
9742            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9743            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9744            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9745            Selection.setSelection((Spannable) mText, getSelectionEnd());
9746        }
9747    }
9748
9749    private void setPrimaryClip(ClipData clip) {
9750        ClipboardManager clipboard = (ClipboardManager) getContext().
9751                getSystemService(Context.CLIPBOARD_SERVICE);
9752        clipboard.setPrimaryClip(clip);
9753        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9754    }
9755
9756    /**
9757     * Get the character offset closest to the specified absolute position. A typical use case is to
9758     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9759     *
9760     * @param x The horizontal absolute position of a point on screen
9761     * @param y The vertical absolute position of a point on screen
9762     * @return the character offset for the character whose position is closest to the specified
9763     *  position. Returns -1 if there is no layout.
9764     */
9765    public int getOffsetForPosition(float x, float y) {
9766        if (getLayout() == null) return -1;
9767        final int line = getLineAtCoordinate(y);
9768        final int offset = getOffsetAtCoordinate(line, x);
9769        return offset;
9770    }
9771
9772    float convertToLocalHorizontalCoordinate(float x) {
9773        x -= getTotalPaddingLeft();
9774        // Clamp the position to inside of the view.
9775        x = Math.max(0.0f, x);
9776        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9777        x += getScrollX();
9778        return x;
9779    }
9780
9781    int getLineAtCoordinate(float y) {
9782        y -= getTotalPaddingTop();
9783        // Clamp the position to inside of the view.
9784        y = Math.max(0.0f, y);
9785        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9786        y += getScrollY();
9787        return getLayout().getLineForVertical((int) y);
9788    }
9789
9790    int getLineAtCoordinateUnclamped(float y) {
9791        y -= getTotalPaddingTop();
9792        y += getScrollY();
9793        return getLayout().getLineForVertical((int) y);
9794    }
9795
9796    int getOffsetAtCoordinate(int line, float x) {
9797        x = convertToLocalHorizontalCoordinate(x);
9798        return getLayout().getOffsetForHorizontal(line, x);
9799    }
9800
9801    @Override
9802    public boolean onDragEvent(DragEvent event) {
9803        switch (event.getAction()) {
9804            case DragEvent.ACTION_DRAG_STARTED:
9805                return mEditor != null && mEditor.hasInsertionController();
9806
9807            case DragEvent.ACTION_DRAG_ENTERED:
9808                TextView.this.requestFocus();
9809                return true;
9810
9811            case DragEvent.ACTION_DRAG_LOCATION:
9812                final int offset = getOffsetForPosition(event.getX(), event.getY());
9813                Selection.setSelection((Spannable)mText, offset);
9814                return true;
9815
9816            case DragEvent.ACTION_DROP:
9817                if (mEditor != null) mEditor.onDrop(event);
9818                return true;
9819
9820            case DragEvent.ACTION_DRAG_ENDED:
9821            case DragEvent.ACTION_DRAG_EXITED:
9822            default:
9823                return true;
9824        }
9825    }
9826
9827    boolean isInBatchEditMode() {
9828        if (mEditor == null) return false;
9829        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9830        if (ims != null) {
9831            return ims.mBatchEditNesting > 0;
9832        }
9833        return mEditor.mInBatchEditControllers;
9834    }
9835
9836    @Override
9837    public void onRtlPropertiesChanged(int layoutDirection) {
9838        super.onRtlPropertiesChanged(layoutDirection);
9839
9840        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9841        if (mTextDir != newTextDir) {
9842            mTextDir = newTextDir;
9843            if (mLayout != null) {
9844                checkForRelayout();
9845            }
9846        }
9847    }
9848
9849    /**
9850     * @hide
9851     */
9852    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9853        if (hasPasswordTransformationMethod()) {
9854            // passwords fields should be LTR
9855            return TextDirectionHeuristics.LTR;
9856        }
9857
9858        // Always need to resolve layout direction first
9859        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9860
9861        // Now, we can select the heuristic
9862        switch (getTextDirection()) {
9863            default:
9864            case TEXT_DIRECTION_FIRST_STRONG:
9865                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9866                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9867            case TEXT_DIRECTION_ANY_RTL:
9868                return TextDirectionHeuristics.ANYRTL_LTR;
9869            case TEXT_DIRECTION_LTR:
9870                return TextDirectionHeuristics.LTR;
9871            case TEXT_DIRECTION_RTL:
9872                return TextDirectionHeuristics.RTL;
9873            case TEXT_DIRECTION_LOCALE:
9874                return TextDirectionHeuristics.LOCALE;
9875            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9876                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9877            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9878                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9879        }
9880    }
9881
9882    /**
9883     * @hide
9884     */
9885    @Override
9886    public void onResolveDrawables(int layoutDirection) {
9887        // No need to resolve twice
9888        if (mLastLayoutDirection == layoutDirection) {
9889            return;
9890        }
9891        mLastLayoutDirection = layoutDirection;
9892
9893        // Resolve drawables
9894        if (mDrawables != null) {
9895            if (mDrawables.resolveWithLayoutDirection(layoutDirection)) {
9896                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.LEFT]);
9897                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.RIGHT]);
9898                applyCompoundDrawableTint();
9899            }
9900        }
9901    }
9902
9903    /**
9904     * Prepares a drawable for display by propagating layout direction and
9905     * drawable state.
9906     *
9907     * @param dr the drawable to prepare
9908     */
9909    private void prepareDrawableForDisplay(@Nullable Drawable dr) {
9910        if (dr == null) {
9911            return;
9912        }
9913
9914        dr.setLayoutDirection(getLayoutDirection());
9915
9916        if (dr.isStateful()) {
9917            dr.setState(getDrawableState());
9918            dr.jumpToCurrentState();
9919        }
9920    }
9921
9922    /**
9923     * @hide
9924     */
9925    protected void resetResolvedDrawables() {
9926        super.resetResolvedDrawables();
9927        mLastLayoutDirection = -1;
9928    }
9929
9930    /**
9931     * @hide
9932     */
9933    protected void viewClicked(InputMethodManager imm) {
9934        if (imm != null) {
9935            imm.viewClicked(this);
9936        }
9937    }
9938
9939    /**
9940     * Deletes the range of text [start, end[.
9941     * @hide
9942     */
9943    protected void deleteText_internal(int start, int end) {
9944        ((Editable) mText).delete(start, end);
9945    }
9946
9947    /**
9948     * Replaces the range of text [start, end[ by replacement text
9949     * @hide
9950     */
9951    protected void replaceText_internal(int start, int end, CharSequence text) {
9952        ((Editable) mText).replace(start, end, text);
9953    }
9954
9955    /**
9956     * Sets a span on the specified range of text
9957     * @hide
9958     */
9959    protected void setSpan_internal(Object span, int start, int end, int flags) {
9960        ((Editable) mText).setSpan(span, start, end, flags);
9961    }
9962
9963    /**
9964     * Moves the cursor to the specified offset position in text
9965     * @hide
9966     */
9967    protected void setCursorPosition_internal(int start, int end) {
9968        Selection.setSelection(((Editable) mText), start, end);
9969    }
9970
9971    /**
9972     * An Editor should be created as soon as any of the editable-specific fields (grouped
9973     * inside the Editor object) is assigned to a non-default value.
9974     * This method will create the Editor if needed.
9975     *
9976     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9977     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9978     * Editor for backward compatibility, as soon as one of these fields is assigned.
9979     *
9980     * Also note that for performance reasons, the mEditor is created when needed, but not
9981     * reset when no more edit-specific fields are needed.
9982     */
9983    private void createEditorIfNeeded() {
9984        if (mEditor == null) {
9985            mEditor = new Editor(this);
9986        }
9987    }
9988
9989    /**
9990     * @hide
9991     */
9992    @Override
9993    public CharSequence getIterableTextForAccessibility() {
9994        return mText;
9995    }
9996
9997    private void ensureIterableTextForAccessibilitySelectable() {
9998        if (!(mText instanceof Spannable)) {
9999            setText(mText, BufferType.SPANNABLE);
10000        }
10001    }
10002
10003    /**
10004     * @hide
10005     */
10006    @Override
10007    public TextSegmentIterator getIteratorForGranularity(int granularity) {
10008        switch (granularity) {
10009            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
10010                Spannable text = (Spannable) getIterableTextForAccessibility();
10011                if (!TextUtils.isEmpty(text) && getLayout() != null) {
10012                    AccessibilityIterators.LineTextSegmentIterator iterator =
10013                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
10014                    iterator.initialize(text, getLayout());
10015                    return iterator;
10016                }
10017            } break;
10018            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
10019                Spannable text = (Spannable) getIterableTextForAccessibility();
10020                if (!TextUtils.isEmpty(text) && getLayout() != null) {
10021                    AccessibilityIterators.PageTextSegmentIterator iterator =
10022                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
10023                    iterator.initialize(this);
10024                    return iterator;
10025                }
10026            } break;
10027        }
10028        return super.getIteratorForGranularity(granularity);
10029    }
10030
10031    /**
10032     * @hide
10033     */
10034    @Override
10035    public int getAccessibilitySelectionStart() {
10036        return getSelectionStart();
10037    }
10038
10039    /**
10040     * @hide
10041     */
10042    public boolean isAccessibilitySelectionExtendable() {
10043        return true;
10044    }
10045
10046    /**
10047     * @hide
10048     */
10049    @Override
10050    public int getAccessibilitySelectionEnd() {
10051        return getSelectionEnd();
10052    }
10053
10054    /**
10055     * @hide
10056     */
10057    @Override
10058    public void setAccessibilitySelection(int start, int end) {
10059        if (getAccessibilitySelectionStart() == start
10060                && getAccessibilitySelectionEnd() == end) {
10061            return;
10062        }
10063        CharSequence text = getIterableTextForAccessibility();
10064        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
10065            Selection.setSelection((Spannable) text, start, end);
10066        } else {
10067            Selection.removeSelection((Spannable) text);
10068        }
10069        // Hide all selection controllers used for adjusting selection
10070        // since we are doing so explicitlty by other means and these
10071        // controllers interact with how selection behaves.
10072        if (mEditor != null) {
10073            mEditor.hideCursorAndSpanControllers();
10074            mEditor.stopTextActionMode();
10075        }
10076    }
10077
10078    /** @hide */
10079    @Override
10080    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10081        super.encodeProperties(stream);
10082
10083        TruncateAt ellipsize = getEllipsize();
10084        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10085        stream.addProperty("text:textSize", getTextSize());
10086        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10087        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10088        stream.addProperty("text:selectionStart", getSelectionStart());
10089        stream.addProperty("text:selectionEnd", getSelectionEnd());
10090        stream.addProperty("text:curTextColor", mCurTextColor);
10091        stream.addProperty("text:text", mText == null ? null : mText.toString());
10092        stream.addProperty("text:gravity", mGravity);
10093    }
10094
10095    /**
10096     * User interface state that is stored by TextView for implementing
10097     * {@link View#onSaveInstanceState}.
10098     */
10099    public static class SavedState extends BaseSavedState {
10100        int selStart = -1;
10101        int selEnd = -1;
10102        CharSequence text;
10103        boolean frozenWithFocus;
10104        CharSequence error;
10105        ParcelableParcel editorState;  // Optional state from Editor.
10106
10107        SavedState(Parcelable superState) {
10108            super(superState);
10109        }
10110
10111        @Override
10112        public void writeToParcel(Parcel out, int flags) {
10113            super.writeToParcel(out, flags);
10114            out.writeInt(selStart);
10115            out.writeInt(selEnd);
10116            out.writeInt(frozenWithFocus ? 1 : 0);
10117            TextUtils.writeToParcel(text, out, flags);
10118
10119            if (error == null) {
10120                out.writeInt(0);
10121            } else {
10122                out.writeInt(1);
10123                TextUtils.writeToParcel(error, out, flags);
10124            }
10125
10126            if (editorState == null) {
10127                out.writeInt(0);
10128            } else {
10129                out.writeInt(1);
10130                editorState.writeToParcel(out, flags);
10131            }
10132        }
10133
10134        @Override
10135        public String toString() {
10136            String str = "TextView.SavedState{"
10137                    + Integer.toHexString(System.identityHashCode(this))
10138                    + " start=" + selStart + " end=" + selEnd;
10139            if (text != null) {
10140                str += " text=" + text;
10141            }
10142            return str + "}";
10143        }
10144
10145        @SuppressWarnings("hiding")
10146        public static final Parcelable.Creator<SavedState> CREATOR
10147                = new Parcelable.Creator<SavedState>() {
10148            public SavedState createFromParcel(Parcel in) {
10149                return new SavedState(in);
10150            }
10151
10152            public SavedState[] newArray(int size) {
10153                return new SavedState[size];
10154            }
10155        };
10156
10157        private SavedState(Parcel in) {
10158            super(in);
10159            selStart = in.readInt();
10160            selEnd = in.readInt();
10161            frozenWithFocus = (in.readInt() != 0);
10162            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10163
10164            if (in.readInt() != 0) {
10165                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10166            }
10167
10168            if (in.readInt() != 0) {
10169                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10170            }
10171        }
10172    }
10173
10174    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10175        private char[] mChars;
10176        private int mStart, mLength;
10177
10178        public CharWrapper(char[] chars, int start, int len) {
10179            mChars = chars;
10180            mStart = start;
10181            mLength = len;
10182        }
10183
10184        /* package */ void set(char[] chars, int start, int len) {
10185            mChars = chars;
10186            mStart = start;
10187            mLength = len;
10188        }
10189
10190        public int length() {
10191            return mLength;
10192        }
10193
10194        public char charAt(int off) {
10195            return mChars[off + mStart];
10196        }
10197
10198        @Override
10199        public String toString() {
10200            return new String(mChars, mStart, mLength);
10201        }
10202
10203        public CharSequence subSequence(int start, int end) {
10204            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10205                throw new IndexOutOfBoundsException(start + ", " + end);
10206            }
10207
10208            return new String(mChars, start + mStart, end - start);
10209        }
10210
10211        public void getChars(int start, int end, char[] buf, int off) {
10212            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10213                throw new IndexOutOfBoundsException(start + ", " + end);
10214            }
10215
10216            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10217        }
10218
10219        public void drawText(Canvas c, int start, int end,
10220                             float x, float y, Paint p) {
10221            c.drawText(mChars, start + mStart, end - start, x, y, p);
10222        }
10223
10224        public void drawTextRun(Canvas c, int start, int end,
10225                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10226            int count = end - start;
10227            int contextCount = contextEnd - contextStart;
10228            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10229                    contextCount, x, y, isRtl, p);
10230        }
10231
10232        public float measureText(int start, int end, Paint p) {
10233            return p.measureText(mChars, start + mStart, end - start);
10234        }
10235
10236        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10237            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10238        }
10239
10240        public float getTextRunAdvances(int start, int end, int contextStart,
10241                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10242                Paint p) {
10243            int count = end - start;
10244            int contextCount = contextEnd - contextStart;
10245            return p.getTextRunAdvances(mChars, start + mStart, count,
10246                    contextStart + mStart, contextCount, isRtl, advances,
10247                    advancesIndex);
10248        }
10249
10250        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10251                int offset, int cursorOpt, Paint p) {
10252            int contextCount = contextEnd - contextStart;
10253            return p.getTextRunCursor(mChars, contextStart + mStart,
10254                    contextCount, dir, offset + mStart, cursorOpt);
10255        }
10256    }
10257
10258    private static final class Marquee {
10259        // TODO: Add an option to configure this
10260        private static final float MARQUEE_DELTA_MAX = 0.07f;
10261        private static final int MARQUEE_DELAY = 1200;
10262        private static final int MARQUEE_DP_PER_SECOND = 30;
10263
10264        private static final byte MARQUEE_STOPPED = 0x0;
10265        private static final byte MARQUEE_STARTING = 0x1;
10266        private static final byte MARQUEE_RUNNING = 0x2;
10267
10268        private final WeakReference<TextView> mView;
10269        private final Choreographer mChoreographer;
10270
10271        private byte mStatus = MARQUEE_STOPPED;
10272        private final float mPixelsPerSecond;
10273        private float mMaxScroll;
10274        private float mMaxFadeScroll;
10275        private float mGhostStart;
10276        private float mGhostOffset;
10277        private float mFadeStop;
10278        private int mRepeatLimit;
10279
10280        private float mScroll;
10281        private long mLastAnimationMs;
10282
10283        Marquee(TextView v) {
10284            final float density = v.getContext().getResources().getDisplayMetrics().density;
10285            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10286            mView = new WeakReference<TextView>(v);
10287            mChoreographer = Choreographer.getInstance();
10288        }
10289
10290        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10291            @Override
10292            public void doFrame(long frameTimeNanos) {
10293                tick();
10294            }
10295        };
10296
10297        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10298            @Override
10299            public void doFrame(long frameTimeNanos) {
10300                mStatus = MARQUEE_RUNNING;
10301                mLastAnimationMs = mChoreographer.getFrameTime();
10302                tick();
10303            }
10304        };
10305
10306        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10307            @Override
10308            public void doFrame(long frameTimeNanos) {
10309                if (mStatus == MARQUEE_RUNNING) {
10310                    if (mRepeatLimit >= 0) {
10311                        mRepeatLimit--;
10312                    }
10313                    start(mRepeatLimit);
10314                }
10315            }
10316        };
10317
10318        void tick() {
10319            if (mStatus != MARQUEE_RUNNING) {
10320                return;
10321            }
10322
10323            mChoreographer.removeFrameCallback(mTickCallback);
10324
10325            final TextView textView = mView.get();
10326            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10327                long currentMs = mChoreographer.getFrameTime();
10328                long deltaMs = currentMs - mLastAnimationMs;
10329                mLastAnimationMs = currentMs;
10330                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10331                mScroll += deltaPx;
10332                if (mScroll > mMaxScroll) {
10333                    mScroll = mMaxScroll;
10334                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10335                } else {
10336                    mChoreographer.postFrameCallback(mTickCallback);
10337                }
10338                textView.invalidate();
10339            }
10340        }
10341
10342        void stop() {
10343            mStatus = MARQUEE_STOPPED;
10344            mChoreographer.removeFrameCallback(mStartCallback);
10345            mChoreographer.removeFrameCallback(mRestartCallback);
10346            mChoreographer.removeFrameCallback(mTickCallback);
10347            resetScroll();
10348        }
10349
10350        private void resetScroll() {
10351            mScroll = 0.0f;
10352            final TextView textView = mView.get();
10353            if (textView != null) textView.invalidate();
10354        }
10355
10356        void start(int repeatLimit) {
10357            if (repeatLimit == 0) {
10358                stop();
10359                return;
10360            }
10361            mRepeatLimit = repeatLimit;
10362            final TextView textView = mView.get();
10363            if (textView != null && textView.mLayout != null) {
10364                mStatus = MARQUEE_STARTING;
10365                mScroll = 0.0f;
10366                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10367                        textView.getCompoundPaddingRight();
10368                final float lineWidth = textView.mLayout.getLineWidth(0);
10369                final float gap = textWidth / 3.0f;
10370                mGhostStart = lineWidth - textWidth + gap;
10371                mMaxScroll = mGhostStart + textWidth;
10372                mGhostOffset = lineWidth + gap;
10373                mFadeStop = lineWidth + textWidth / 6.0f;
10374                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10375
10376                textView.invalidate();
10377                mChoreographer.postFrameCallback(mStartCallback);
10378            }
10379        }
10380
10381        float getGhostOffset() {
10382            return mGhostOffset;
10383        }
10384
10385        float getScroll() {
10386            return mScroll;
10387        }
10388
10389        float getMaxFadeScroll() {
10390            return mMaxFadeScroll;
10391        }
10392
10393        boolean shouldDrawLeftFade() {
10394            return mScroll <= mFadeStop;
10395        }
10396
10397        boolean shouldDrawGhost() {
10398            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10399        }
10400
10401        boolean isRunning() {
10402            return mStatus == MARQUEE_RUNNING;
10403        }
10404
10405        boolean isStopped() {
10406            return mStatus == MARQUEE_STOPPED;
10407        }
10408    }
10409
10410    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10411
10412        private CharSequence mBeforeText;
10413
10414        public void beforeTextChanged(CharSequence buffer, int start,
10415                                      int before, int after) {
10416            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10417                    + " before=" + before + " after=" + after + ": " + buffer);
10418
10419            if (AccessibilityManager.getInstance(mContext).isEnabled()
10420                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10421                            || shouldSpeakPasswordsForAccessibility())) {
10422                mBeforeText = buffer.toString();
10423            }
10424
10425            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10426        }
10427
10428        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10429            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10430                    + " before=" + before + " after=" + after + ": " + buffer);
10431            TextView.this.handleTextChanged(buffer, start, before, after);
10432
10433            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10434                    (isFocused() || isSelected() && isShown())) {
10435                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10436                mBeforeText = null;
10437            }
10438        }
10439
10440        public void afterTextChanged(Editable buffer) {
10441            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10442            TextView.this.sendAfterTextChanged(buffer);
10443
10444            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10445                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10446            }
10447        }
10448
10449        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10450            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10451                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10452            TextView.this.spanChange(buf, what, s, st, e, en);
10453        }
10454
10455        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10456            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10457                    + " what=" + what + ": " + buf);
10458            TextView.this.spanChange(buf, what, -1, s, -1, e);
10459        }
10460
10461        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10462            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10463                    + " what=" + what + ": " + buf);
10464            TextView.this.spanChange(buf, what, s, -1, e, -1);
10465        }
10466    }
10467}
10468