TextView.java revision 7843f0a799690bea661c3ff859b11c547601d45c 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
20import static android.view.accessibility.AccessibilityNodeInfo.EXTRA_DATA_TEXT_CHARACTER_LOCATION_ARG_LENGTH;
21import static android.view.accessibility.AccessibilityNodeInfo.EXTRA_DATA_TEXT_CHARACTER_LOCATION_ARG_START_INDEX;
22import static android.view.accessibility.AccessibilityNodeInfo.EXTRA_DATA_TEXT_CHARACTER_LOCATION_KEY;
23import static android.view.inputmethod.CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION;
24
25import android.R;
26import android.annotation.ColorInt;
27import android.annotation.DrawableRes;
28import android.annotation.FloatRange;
29import android.annotation.IntDef;
30import android.annotation.NonNull;
31import android.annotation.Nullable;
32import android.annotation.Size;
33import android.annotation.StringRes;
34import android.annotation.StyleRes;
35import android.annotation.XmlRes;
36import android.app.Activity;
37import android.app.assist.AssistStructure;
38import android.content.ClipData;
39import android.content.ClipboardManager;
40import android.content.Context;
41import android.content.Intent;
42import android.content.UndoManager;
43import android.content.res.ColorStateList;
44import android.content.res.CompatibilityInfo;
45import android.content.res.Configuration;
46import android.content.res.Resources;
47import android.content.res.TypedArray;
48import android.content.res.XmlResourceParser;
49import android.graphics.BaseCanvas;
50import android.graphics.Canvas;
51import android.graphics.Insets;
52import android.graphics.Paint;
53import android.graphics.Path;
54import android.graphics.PorterDuff;
55import android.graphics.Rect;
56import android.graphics.RectF;
57import android.graphics.Typeface;
58import android.graphics.drawable.Drawable;
59import android.os.AsyncTask;
60import android.os.Bundle;
61import android.os.LocaleList;
62import android.os.Parcel;
63import android.os.Parcelable;
64import android.os.ParcelableParcel;
65import android.os.SystemClock;
66import android.provider.Settings;
67import android.text.BoringLayout;
68import android.text.DynamicLayout;
69import android.text.Editable;
70import android.text.GetChars;
71import android.text.GraphicsOperations;
72import android.text.InputFilter;
73import android.text.InputType;
74import android.text.Layout;
75import android.text.ParcelableSpan;
76import android.text.Selection;
77import android.text.SpanWatcher;
78import android.text.Spannable;
79import android.text.SpannableStringBuilder;
80import android.text.Spanned;
81import android.text.SpannedString;
82import android.text.StaticLayout;
83import android.text.TextDirectionHeuristic;
84import android.text.TextDirectionHeuristics;
85import android.text.TextPaint;
86import android.text.TextUtils;
87import android.text.TextUtils.TruncateAt;
88import android.text.TextWatcher;
89import android.text.method.AllCapsTransformationMethod;
90import android.text.method.ArrowKeyMovementMethod;
91import android.text.method.DateKeyListener;
92import android.text.method.DateTimeKeyListener;
93import android.text.method.DialerKeyListener;
94import android.text.method.DigitsKeyListener;
95import android.text.method.KeyListener;
96import android.text.method.LinkMovementMethod;
97import android.text.method.MetaKeyKeyListener;
98import android.text.method.MovementMethod;
99import android.text.method.PasswordTransformationMethod;
100import android.text.method.SingleLineTransformationMethod;
101import android.text.method.TextKeyListener;
102import android.text.method.TimeKeyListener;
103import android.text.method.TransformationMethod;
104import android.text.method.TransformationMethod2;
105import android.text.method.WordIterator;
106import android.text.style.CharacterStyle;
107import android.text.style.ClickableSpan;
108import android.text.style.ParagraphStyle;
109import android.text.style.SpellCheckSpan;
110import android.text.style.SuggestionSpan;
111import android.text.style.URLSpan;
112import android.text.style.UpdateAppearance;
113import android.text.util.Linkify;
114import android.util.AttributeSet;
115import android.util.DisplayMetrics;
116import android.util.IntArray;
117import android.util.Log;
118import android.util.TypedValue;
119import android.view.AccessibilityIterators.TextSegmentIterator;
120import android.view.ActionMode;
121import android.view.Choreographer;
122import android.view.ContextMenu;
123import android.view.DragEvent;
124import android.view.Gravity;
125import android.view.HapticFeedbackConstants;
126import android.view.KeyCharacterMap;
127import android.view.KeyEvent;
128import android.view.MotionEvent;
129import android.view.PointerIcon;
130import android.view.View;
131import android.view.ViewConfiguration;
132import android.view.ViewDebug;
133import android.view.ViewGroup.LayoutParams;
134import android.view.ViewHierarchyEncoder;
135import android.view.ViewParent;
136import android.view.ViewRootImpl;
137import android.view.ViewStructure;
138import android.view.ViewTreeObserver;
139import android.view.accessibility.AccessibilityEvent;
140import android.view.accessibility.AccessibilityManager;
141import android.view.accessibility.AccessibilityNodeInfo;
142import android.view.animation.AnimationUtils;
143import android.view.autofill.AutoFillManager;
144import android.view.autofill.AutoFillType;
145import android.view.autofill.AutoFillValue;
146import android.view.inputmethod.BaseInputConnection;
147import android.view.inputmethod.CompletionInfo;
148import android.view.inputmethod.CorrectionInfo;
149import android.view.inputmethod.CursorAnchorInfo;
150import android.view.inputmethod.EditorInfo;
151import android.view.inputmethod.ExtractedText;
152import android.view.inputmethod.ExtractedTextRequest;
153import android.view.inputmethod.InputConnection;
154import android.view.inputmethod.InputMethodManager;
155import android.view.textclassifier.TextClassificationManager;
156import android.view.textclassifier.TextClassifier;
157import android.view.textservice.SpellCheckerSubtype;
158import android.view.textservice.TextServicesManager;
159import android.widget.RemoteViews.RemoteView;
160
161import com.android.internal.annotations.VisibleForTesting;
162import com.android.internal.logging.MetricsLogger;
163import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
164import com.android.internal.util.FastMath;
165import com.android.internal.widget.EditableInputConnection;
166
167import libcore.util.EmptyArray;
168
169import org.xmlpull.v1.XmlPullParserException;
170
171import java.io.IOException;
172import java.lang.annotation.Retention;
173import java.lang.annotation.RetentionPolicy;
174import java.lang.ref.WeakReference;
175import java.util.ArrayList;
176import java.util.Arrays;
177import java.util.Locale;
178
179/**
180 * Displays text to the user and optionally allows them to edit it.  A TextView
181 * is a complete text editor, however the basic class is configured to not
182 * allow editing; see {@link EditText} for a subclass that configures the text
183 * view for editing.
184 *
185 * <p>
186 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
187 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
188 * android:textIsSelectable} to "true" or call
189 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
190 * allows users to make selection gestures in the TextView, which in turn triggers the system's
191 * built-in copy/paste controls.
192 * <p>
193 * <b>XML attributes</b>
194 * <p>
195 * See {@link android.R.styleable#TextView TextView Attributes},
196 * {@link android.R.styleable#View View Attributes}
197 *
198 * @attr ref android.R.styleable#TextView_text
199 * @attr ref android.R.styleable#TextView_bufferType
200 * @attr ref android.R.styleable#TextView_hint
201 * @attr ref android.R.styleable#TextView_textColor
202 * @attr ref android.R.styleable#TextView_textColorHighlight
203 * @attr ref android.R.styleable#TextView_textColorHint
204 * @attr ref android.R.styleable#TextView_textAppearance
205 * @attr ref android.R.styleable#TextView_textColorLink
206 * @attr ref android.R.styleable#TextView_textSize
207 * @attr ref android.R.styleable#TextView_textScaleX
208 * @attr ref android.R.styleable#TextView_fontFamily
209 * @attr ref android.R.styleable#TextView_typeface
210 * @attr ref android.R.styleable#TextView_textStyle
211 * @attr ref android.R.styleable#TextView_cursorVisible
212 * @attr ref android.R.styleable#TextView_maxLines
213 * @attr ref android.R.styleable#TextView_maxHeight
214 * @attr ref android.R.styleable#TextView_lines
215 * @attr ref android.R.styleable#TextView_height
216 * @attr ref android.R.styleable#TextView_minLines
217 * @attr ref android.R.styleable#TextView_minHeight
218 * @attr ref android.R.styleable#TextView_maxEms
219 * @attr ref android.R.styleable#TextView_maxWidth
220 * @attr ref android.R.styleable#TextView_ems
221 * @attr ref android.R.styleable#TextView_width
222 * @attr ref android.R.styleable#TextView_minEms
223 * @attr ref android.R.styleable#TextView_minWidth
224 * @attr ref android.R.styleable#TextView_gravity
225 * @attr ref android.R.styleable#TextView_scrollHorizontally
226 * @attr ref android.R.styleable#TextView_password
227 * @attr ref android.R.styleable#TextView_singleLine
228 * @attr ref android.R.styleable#TextView_selectAllOnFocus
229 * @attr ref android.R.styleable#TextView_includeFontPadding
230 * @attr ref android.R.styleable#TextView_maxLength
231 * @attr ref android.R.styleable#TextView_shadowColor
232 * @attr ref android.R.styleable#TextView_shadowDx
233 * @attr ref android.R.styleable#TextView_shadowDy
234 * @attr ref android.R.styleable#TextView_shadowRadius
235 * @attr ref android.R.styleable#TextView_autoLink
236 * @attr ref android.R.styleable#TextView_linksClickable
237 * @attr ref android.R.styleable#TextView_numeric
238 * @attr ref android.R.styleable#TextView_digits
239 * @attr ref android.R.styleable#TextView_phoneNumber
240 * @attr ref android.R.styleable#TextView_inputMethod
241 * @attr ref android.R.styleable#TextView_capitalize
242 * @attr ref android.R.styleable#TextView_autoText
243 * @attr ref android.R.styleable#TextView_editable
244 * @attr ref android.R.styleable#TextView_freezesText
245 * @attr ref android.R.styleable#TextView_ellipsize
246 * @attr ref android.R.styleable#TextView_drawableTop
247 * @attr ref android.R.styleable#TextView_drawableBottom
248 * @attr ref android.R.styleable#TextView_drawableRight
249 * @attr ref android.R.styleable#TextView_drawableLeft
250 * @attr ref android.R.styleable#TextView_drawableStart
251 * @attr ref android.R.styleable#TextView_drawableEnd
252 * @attr ref android.R.styleable#TextView_drawablePadding
253 * @attr ref android.R.styleable#TextView_drawableTint
254 * @attr ref android.R.styleable#TextView_drawableTintMode
255 * @attr ref android.R.styleable#TextView_lineSpacingExtra
256 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
257 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
258 * @attr ref android.R.styleable#TextView_inputType
259 * @attr ref android.R.styleable#TextView_imeOptions
260 * @attr ref android.R.styleable#TextView_privateImeOptions
261 * @attr ref android.R.styleable#TextView_imeActionLabel
262 * @attr ref android.R.styleable#TextView_imeActionId
263 * @attr ref android.R.styleable#TextView_editorExtras
264 * @attr ref android.R.styleable#TextView_elegantTextHeight
265 * @attr ref android.R.styleable#TextView_letterSpacing
266 * @attr ref android.R.styleable#TextView_fontFeatureSettings
267 * @attr ref android.R.styleable#TextView_breakStrategy
268 * @attr ref android.R.styleable#TextView_hyphenationFrequency
269 * @attr ref android.R.styleable#TextView_autoSizeText
270 * @attr ref android.R.styleable#TextView_autoSizeMinTextSize
271 * @attr ref android.R.styleable#TextView_autoSizeMaxTextSize
272 * @attr ref android.R.styleable#TextView_autoSizeStepGranularity
273 * @attr ref android.R.styleable#TextView_autoSizePresetSizes
274 */
275@RemoteView
276public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
277    static final String LOG_TAG = "TextView";
278    static final boolean DEBUG_EXTRACT = false;
279    static final boolean DEBUG_AUTOFILL = false;
280    private static final float[] TEMP_POSITION = new float[2];
281
282    // Enum for the "typeface" XML parameter.
283    // TODO: How can we get this from the XML instead of hardcoding it here?
284    private static final int SANS = 1;
285    private static final int SERIF = 2;
286    private static final int MONOSPACE = 3;
287
288    // Bitfield for the "numeric" XML parameter.
289    // TODO: How can we get this from the XML instead of hardcoding it here?
290    private static final int SIGNED = 2;
291    private static final int DECIMAL = 4;
292
293    /**
294     * Draw marquee text with fading edges as usual
295     */
296    private static final int MARQUEE_FADE_NORMAL = 0;
297
298    /**
299     * Draw marquee text as ellipsize end while inactive instead of with the fade.
300     * (Useful for devices where the fade can be expensive if overdone)
301     */
302    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
303
304    /**
305     * Draw marquee text with fading edges because it is currently active/animating.
306     */
307    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
308
309    private static final int LINES = 1;
310    private static final int EMS = LINES;
311    private static final int PIXELS = 2;
312
313    private static final RectF TEMP_RECTF = new RectF();
314
315    /** @hide */
316    static final int VERY_WIDE = 1024 * 1024; // XXX should be much larger
317    private static final int ANIMATED_SCROLL_GAP = 250;
318
319    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
320    private static final Spanned EMPTY_SPANNED = new SpannedString("");
321
322    private static final int CHANGE_WATCHER_PRIORITY = 100;
323
324    // New state used to change background based on whether this TextView is multiline.
325    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
326
327    // Accessibility action to share selected text.
328    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
329
330    /**
331     * @hide
332     */
333    // Accessibility action start id for "process text" actions.
334    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
335
336    /**
337     * @hide
338     */
339    static final int PROCESS_TEXT_REQUEST_CODE = 100;
340
341    /**
342     *  Return code of {@link #doKeyDown}.
343     */
344    private static final int KEY_EVENT_NOT_HANDLED = 0;
345    private static final int KEY_EVENT_HANDLED = -1;
346    private static final int KEY_DOWN_HANDLED_BY_KEY_LISTENER = 1;
347    private static final int KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD = 2;
348
349    // System wide time for last cut, copy or text changed action.
350    static long sLastCutCopyOrTextChangedTime;
351
352    private ColorStateList mTextColor;
353    private ColorStateList mHintTextColor;
354    private ColorStateList mLinkTextColor;
355    @ViewDebug.ExportedProperty(category = "text")
356    private int mCurTextColor;
357    private int mCurHintTextColor;
358    private boolean mFreezesText;
359
360    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
361    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
362
363    private float mShadowRadius, mShadowDx, mShadowDy;
364    private int mShadowColor;
365
366    private boolean mPreDrawRegistered;
367    private boolean mPreDrawListenerDetached;
368
369    private TextClassifier mTextClassifier;
370
371    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
372    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
373    // the view hierarchy. On the other hand, if the user is using the movement key to traverse
374    // views (i.e. the first movement was to traverse out of this view, or this view was traversed
375    // into by the user holding the movement key down) then we shouldn't prevent the focus from
376    // changing.
377    private boolean mPreventDefaultMovement;
378
379    private TextUtils.TruncateAt mEllipsize;
380
381    static class Drawables {
382        static final int LEFT = 0;
383        static final int TOP = 1;
384        static final int RIGHT = 2;
385        static final int BOTTOM = 3;
386
387        static final int DRAWABLE_NONE = -1;
388        static final int DRAWABLE_RIGHT = 0;
389        static final int DRAWABLE_LEFT = 1;
390
391        final Rect mCompoundRect = new Rect();
392
393        final Drawable[] mShowing = new Drawable[4];
394
395        ColorStateList mTintList;
396        PorterDuff.Mode mTintMode;
397        boolean mHasTint;
398        boolean mHasTintMode;
399
400        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
401        Drawable mDrawableLeftInitial, mDrawableRightInitial;
402
403        boolean mIsRtlCompatibilityMode;
404        boolean mOverride;
405
406        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
407                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
408
409        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
410                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
411
412        int mDrawablePadding;
413
414        int mDrawableSaved = DRAWABLE_NONE;
415
416        public Drawables(Context context) {
417            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
418            mIsRtlCompatibilityMode = targetSdkVersion < JELLY_BEAN_MR1
419                    || !context.getApplicationInfo().hasRtlSupport();
420            mOverride = false;
421        }
422
423        /**
424         * @return {@code true} if this object contains metadata that needs to
425         *         be retained, {@code false} otherwise
426         */
427        public boolean hasMetadata() {
428            return mDrawablePadding != 0 || mHasTintMode || mHasTint;
429        }
430
431        /**
432         * Updates the list of displayed drawables to account for the current
433         * layout direction.
434         *
435         * @param layoutDirection the current layout direction
436         * @return {@code true} if the displayed drawables changed
437         */
438        public boolean resolveWithLayoutDirection(int layoutDirection) {
439            final Drawable previousLeft = mShowing[Drawables.LEFT];
440            final Drawable previousRight = mShowing[Drawables.RIGHT];
441
442            // First reset "left" and "right" drawables to their initial values
443            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
444            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
445
446            if (mIsRtlCompatibilityMode) {
447                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
448                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
449                    mShowing[Drawables.LEFT] = mDrawableStart;
450                    mDrawableSizeLeft = mDrawableSizeStart;
451                    mDrawableHeightLeft = mDrawableHeightStart;
452                }
453                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
454                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
455                    mShowing[Drawables.RIGHT] = mDrawableEnd;
456                    mDrawableSizeRight = mDrawableSizeEnd;
457                    mDrawableHeightRight = mDrawableHeightEnd;
458                }
459            } else {
460                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
461                // drawable if and only if they have been defined
462                switch(layoutDirection) {
463                    case LAYOUT_DIRECTION_RTL:
464                        if (mOverride) {
465                            mShowing[Drawables.RIGHT] = mDrawableStart;
466                            mDrawableSizeRight = mDrawableSizeStart;
467                            mDrawableHeightRight = mDrawableHeightStart;
468
469                            mShowing[Drawables.LEFT] = mDrawableEnd;
470                            mDrawableSizeLeft = mDrawableSizeEnd;
471                            mDrawableHeightLeft = mDrawableHeightEnd;
472                        }
473                        break;
474
475                    case LAYOUT_DIRECTION_LTR:
476                    default:
477                        if (mOverride) {
478                            mShowing[Drawables.LEFT] = mDrawableStart;
479                            mDrawableSizeLeft = mDrawableSizeStart;
480                            mDrawableHeightLeft = mDrawableHeightStart;
481
482                            mShowing[Drawables.RIGHT] = mDrawableEnd;
483                            mDrawableSizeRight = mDrawableSizeEnd;
484                            mDrawableHeightRight = mDrawableHeightEnd;
485                        }
486                        break;
487                }
488            }
489
490            applyErrorDrawableIfNeeded(layoutDirection);
491
492            return mShowing[Drawables.LEFT] != previousLeft
493                    || mShowing[Drawables.RIGHT] != previousRight;
494        }
495
496        public void setErrorDrawable(Drawable dr, TextView tv) {
497            if (mDrawableError != dr && mDrawableError != null) {
498                mDrawableError.setCallback(null);
499            }
500            mDrawableError = dr;
501
502            if (mDrawableError != null) {
503                final Rect compoundRect = mCompoundRect;
504                final int[] state = tv.getDrawableState();
505
506                mDrawableError.setState(state);
507                mDrawableError.copyBounds(compoundRect);
508                mDrawableError.setCallback(tv);
509                mDrawableSizeError = compoundRect.width();
510                mDrawableHeightError = compoundRect.height();
511            } else {
512                mDrawableSizeError = mDrawableHeightError = 0;
513            }
514        }
515
516        private void applyErrorDrawableIfNeeded(int layoutDirection) {
517            // first restore the initial state if needed
518            switch (mDrawableSaved) {
519                case DRAWABLE_LEFT:
520                    mShowing[Drawables.LEFT] = mDrawableTemp;
521                    mDrawableSizeLeft = mDrawableSizeTemp;
522                    mDrawableHeightLeft = mDrawableHeightTemp;
523                    break;
524                case DRAWABLE_RIGHT:
525                    mShowing[Drawables.RIGHT] = mDrawableTemp;
526                    mDrawableSizeRight = mDrawableSizeTemp;
527                    mDrawableHeightRight = mDrawableHeightTemp;
528                    break;
529                case DRAWABLE_NONE:
530                default:
531            }
532            // then, if needed, assign the Error drawable to the correct location
533            if (mDrawableError != null) {
534                switch(layoutDirection) {
535                    case LAYOUT_DIRECTION_RTL:
536                        mDrawableSaved = DRAWABLE_LEFT;
537
538                        mDrawableTemp = mShowing[Drawables.LEFT];
539                        mDrawableSizeTemp = mDrawableSizeLeft;
540                        mDrawableHeightTemp = mDrawableHeightLeft;
541
542                        mShowing[Drawables.LEFT] = mDrawableError;
543                        mDrawableSizeLeft = mDrawableSizeError;
544                        mDrawableHeightLeft = mDrawableHeightError;
545                        break;
546                    case LAYOUT_DIRECTION_LTR:
547                    default:
548                        mDrawableSaved = DRAWABLE_RIGHT;
549
550                        mDrawableTemp = mShowing[Drawables.RIGHT];
551                        mDrawableSizeTemp = mDrawableSizeRight;
552                        mDrawableHeightTemp = mDrawableHeightRight;
553
554                        mShowing[Drawables.RIGHT] = mDrawableError;
555                        mDrawableSizeRight = mDrawableSizeError;
556                        mDrawableHeightRight = mDrawableHeightError;
557                        break;
558                }
559            }
560        }
561    }
562
563    Drawables mDrawables;
564
565    private CharWrapper mCharWrapper;
566
567    private Marquee mMarquee;
568    private boolean mRestartMarquee;
569
570    private int mMarqueeRepeatLimit = 3;
571
572    private int mLastLayoutDirection = -1;
573
574    /**
575     * On some devices the fading edges add a performance penalty if used
576     * extensively in the same layout. This mode indicates how the marquee
577     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
578     */
579    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
580
581    /**
582     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
583     * the layout that should be used when the mode switches.
584     */
585    private Layout mSavedMarqueeModeLayout;
586
587    @ViewDebug.ExportedProperty(category = "text")
588    private CharSequence mText;
589    private CharSequence mTransformed;
590    private BufferType mBufferType = BufferType.NORMAL;
591
592    private CharSequence mHint;
593    private Layout mHintLayout;
594
595    private MovementMethod mMovement;
596
597    private TransformationMethod mTransformation;
598    private boolean mAllowTransformationLengthChange;
599    private ChangeWatcher mChangeWatcher;
600
601    private ArrayList<TextWatcher> mListeners;
602
603    // display attributes
604    private final TextPaint mTextPaint;
605    private boolean mUserSetTextScaleX;
606    private Layout mLayout;
607    private boolean mLocalesChanged = false;
608
609    @ViewDebug.ExportedProperty(category = "text")
610    private int mGravity = Gravity.TOP | Gravity.START;
611    private boolean mHorizontallyScrolling;
612
613    private int mAutoLinkMask;
614    private boolean mLinksClickable = true;
615
616    private float mSpacingMult = 1.0f;
617    private float mSpacingAdd = 0.0f;
618
619    private int mBreakStrategy;
620    private int mHyphenationFrequency;
621    private boolean mJustify;
622
623    private int mMaximum = Integer.MAX_VALUE;
624    private int mMaxMode = LINES;
625    private int mMinimum = 0;
626    private int mMinMode = LINES;
627
628    private int mOldMaximum = mMaximum;
629    private int mOldMaxMode = mMaxMode;
630
631    private int mMaxWidth = Integer.MAX_VALUE;
632    private int mMaxWidthMode = PIXELS;
633    private int mMinWidth = 0;
634    private int mMinWidthMode = PIXELS;
635
636    private boolean mSingleLine;
637    private int mDesiredHeightAtMeasure = -1;
638    private boolean mIncludePad = true;
639    private int mDeferScroll = -1;
640
641    // tmp primitives, so we don't alloc them on each draw
642    private Rect mTempRect;
643    private long mLastScroll;
644    private Scroller mScroller;
645    private TextPaint mTempTextPaint;
646
647    private BoringLayout.Metrics mBoring, mHintBoring;
648    private BoringLayout mSavedLayout, mSavedHintLayout;
649
650    private TextDirectionHeuristic mTextDir;
651
652    private InputFilter[] mFilters = NO_FILTERS;
653
654    private volatile Locale mCurrentSpellCheckerLocaleCache;
655
656    // It is possible to have a selection even when mEditor is null (programmatically set, like when
657    // a link is pressed). These highlight-related fields do not go in mEditor.
658    int mHighlightColor = 0x6633B5E5;
659    private Path mHighlightPath;
660    private final Paint mHighlightPaint;
661    private boolean mHighlightPathBogus = true;
662
663    // Although these fields are specific to editable text, they are not added to Editor because
664    // they are defined by the TextView's style and are theme-dependent.
665    int mCursorDrawableRes;
666    // These six fields, could be moved to Editor, since we know their default values and we
667    // could condition the creation of the Editor to a non standard value. This is however
668    // brittle since the hardcoded values here (such as
669    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
670    // default style is modified.
671    int mTextSelectHandleLeftRes;
672    int mTextSelectHandleRightRes;
673    int mTextSelectHandleRes;
674    int mTextEditSuggestionItemLayout;
675    int mTextEditSuggestionContainerLayout;
676    int mTextEditSuggestionHighlightStyle;
677
678    /**
679     * EditText specific data, created on demand when one of the Editor fields is used.
680     * See {@link #createEditorIfNeeded()}.
681     */
682    private Editor mEditor;
683
684    private static final int DEVICE_PROVISIONED_UNKNOWN = 0;
685    private static final int DEVICE_PROVISIONED_NO = 1;
686    private static final int DEVICE_PROVISIONED_YES = 2;
687
688    /**
689     * Some special options such as sharing selected text should only be shown if the device
690     * is provisioned. Only check the provisioned state once for a given view instance.
691     */
692    private int mDeviceProvisionedState = DEVICE_PROVISIONED_UNKNOWN;
693
694    // The TextView does not auto-size text (default).
695    public static final int AUTO_SIZE_TEXT_TYPE_NONE = 0;
696    // The TextView performs uniform horizontal and vertical text size scaling to fit within the
697    // container.
698    public static final int AUTO_SIZE_TEXT_TYPE_UNIFORM = 1;
699    /** @hide */
700    @IntDef({AUTO_SIZE_TEXT_TYPE_NONE, AUTO_SIZE_TEXT_TYPE_UNIFORM})
701    @Retention(RetentionPolicy.SOURCE)
702    public @interface AutoSizeTextType {}
703    // Default minimum size for auto-sizing text in scaled pixels. {@see #setAutoSizeMinTextSize}.
704    private static final int DEFAULT_AUTO_SIZE_MIN_TEXT_SIZE_IN_SP = 12;
705    // Default maximum size for auto-sizing text in scaled pixels. {@see #setAutoSizeMaxTextSize}.
706    private static final int DEFAULT_AUTO_SIZE_MAX_TEXT_SIZE_IN_SP = 112;
707    // Default value for the step size in pixels.
708    private static final int DEFAULT_AUTO_SIZE_GRANULARITY_IN_PX = 1;
709    // Use this to specify that any of the auto-size configuration int values have not been set.
710    private static final int UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE = -1;
711    // Auto-size text type.
712    private int mAutoSizeTextType = AUTO_SIZE_TEXT_TYPE_NONE;
713    // Specify if auto-size text is needed.
714    private boolean mNeedsAutoSizeText = false;
715    // Step size for auto-sizing in pixels.
716    private int mAutoSizeStepGranularityInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
717    // Minimum text size for auto-sizing in pixels.
718    private int mAutoSizeMinTextSizeInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
719    // Maximum text size for auto-sizing in pixels.
720    private int mAutoSizeMaxTextSizeInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
721    // Contains a (specified or computed) distinct sorted set of text sizes in pixels to pick from
722    // when auto-sizing text.
723    private int[] mAutoSizeTextSizesInPx = EmptyArray.INT;
724    // Specifies whether auto-size should use the provided auto size steps set or if it should
725    // build the steps set using mAutoSizeMinTextSizeInPx, mAutoSizeMaxTextSizeInPx and
726    // mAutoSizeStepGranularityInPx.
727    private boolean mHasPresetAutoSizeValues = false;
728
729    // Indicates whether the text was set from resources or dynamically, so it can be used to
730    // sanitize auto-fill request.
731    private boolean mTextFromResource = false;
732
733    /**
734     * Kick-start the font cache for the zygote process (to pay the cost of
735     * initializing freetype for our default font only once).
736     * @hide
737     */
738    public static void preloadFontCache() {
739        Paint p = new Paint();
740        p.setAntiAlias(true);
741        // Ensure that the Typeface is loaded here.
742        // Typically, Typeface is preloaded by zygote but not on all devices, e.g. Android Auto.
743        // So, sets Typeface.DEFAULT explicitly here for ensuring that the Typeface is loaded here
744        // since Paint.measureText can not be called without Typeface static initializer.
745        p.setTypeface(Typeface.DEFAULT);
746        // We don't care about the result, just the side-effect of measuring.
747        p.measureText("H");
748    }
749
750    /**
751     * Interface definition for a callback to be invoked when an action is
752     * performed on the editor.
753     */
754    public interface OnEditorActionListener {
755        /**
756         * Called when an action is being performed.
757         *
758         * @param v The view that was clicked.
759         * @param actionId Identifier of the action.  This will be either the
760         * identifier you supplied, or {@link EditorInfo#IME_NULL
761         * EditorInfo.IME_NULL} if being called due to the enter key
762         * being pressed.
763         * @param event If triggered by an enter key, this is the event;
764         * otherwise, this is null.
765         * @return Return true if you have consumed the action, else false.
766         */
767        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
768    }
769
770    public TextView(Context context) {
771        this(context, null);
772    }
773
774    public TextView(Context context, @Nullable AttributeSet attrs) {
775        this(context, attrs, com.android.internal.R.attr.textViewStyle);
776    }
777
778    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
779        this(context, attrs, defStyleAttr, 0);
780    }
781
782    @SuppressWarnings("deprecation")
783    public TextView(
784            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
785        super(context, attrs, defStyleAttr, defStyleRes);
786
787        mText = "";
788
789        final Resources res = getResources();
790        final CompatibilityInfo compat = res.getCompatibilityInfo();
791
792        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
793        mTextPaint.density = res.getDisplayMetrics().density;
794        mTextPaint.setCompatibilityScaling(compat.applicationScale);
795
796        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
797        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
798
799        mMovement = getDefaultMovementMethod();
800
801        mTransformation = null;
802
803        int textColorHighlight = 0;
804        ColorStateList textColor = null;
805        ColorStateList textColorHint = null;
806        ColorStateList textColorLink = null;
807        int textSize = 15;
808        String fontFamily = null;
809        Typeface fontTypeface = null;
810        boolean fontFamilyExplicit = false;
811        int typefaceIndex = -1;
812        int styleIndex = -1;
813        boolean allCaps = false;
814        int shadowcolor = 0;
815        float dx = 0, dy = 0, r = 0;
816        boolean elegant = false;
817        float letterSpacing = 0;
818        String fontFeatureSettings = null;
819        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
820        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
821        mJustify = false;
822
823        final Resources.Theme theme = context.getTheme();
824
825        /*
826         * Look the appearance up without checking first if it exists because
827         * almost every TextView has one and it greatly simplifies the logic
828         * to be able to parse the appearance first and then let specific tags
829         * for this View override it.
830         */
831        TypedArray a = theme.obtainStyledAttributes(attrs,
832                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
833        TypedArray appearance = null;
834        int ap = a.getResourceId(
835                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
836        a.recycle();
837        if (ap != -1) {
838            appearance = theme.obtainStyledAttributes(
839                    ap, com.android.internal.R.styleable.TextAppearance);
840        }
841        if (appearance != null) {
842            int n = appearance.getIndexCount();
843            for (int i = 0; i < n; i++) {
844                int attr = appearance.getIndex(i);
845
846                switch (attr) {
847                    case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
848                        textColorHighlight = appearance.getColor(attr, textColorHighlight);
849                        break;
850
851                    case com.android.internal.R.styleable.TextAppearance_textColor:
852                        textColor = appearance.getColorStateList(attr);
853                        break;
854
855                    case com.android.internal.R.styleable.TextAppearance_textColorHint:
856                        textColorHint = appearance.getColorStateList(attr);
857                        break;
858
859                    case com.android.internal.R.styleable.TextAppearance_textColorLink:
860                        textColorLink = appearance.getColorStateList(attr);
861                        break;
862
863                    case com.android.internal.R.styleable.TextAppearance_textSize:
864                        textSize = appearance.getDimensionPixelSize(attr, textSize);
865                        break;
866
867                    case com.android.internal.R.styleable.TextAppearance_typeface:
868                        typefaceIndex = appearance.getInt(attr, -1);
869                        break;
870
871                    case com.android.internal.R.styleable.TextAppearance_fontFamily:
872                        try {
873                            fontTypeface = appearance.getFont(attr);
874                        } catch (UnsupportedOperationException e) {
875                            // Expected if it is not a font resource.
876                        }
877                        if (fontTypeface == null) {
878                            fontFamily = appearance.getString(attr);
879                        }
880                        break;
881
882                    case com.android.internal.R.styleable.TextAppearance_textStyle:
883                        styleIndex = appearance.getInt(attr, -1);
884                        break;
885
886                    case com.android.internal.R.styleable.TextAppearance_textAllCaps:
887                        allCaps = appearance.getBoolean(attr, false);
888                        break;
889
890                    case com.android.internal.R.styleable.TextAppearance_shadowColor:
891                        shadowcolor = appearance.getInt(attr, 0);
892                        break;
893
894                    case com.android.internal.R.styleable.TextAppearance_shadowDx:
895                        dx = appearance.getFloat(attr, 0);
896                        break;
897
898                    case com.android.internal.R.styleable.TextAppearance_shadowDy:
899                        dy = appearance.getFloat(attr, 0);
900                        break;
901
902                    case com.android.internal.R.styleable.TextAppearance_shadowRadius:
903                        r = appearance.getFloat(attr, 0);
904                        break;
905
906                    case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
907                        elegant = appearance.getBoolean(attr, false);
908                        break;
909
910                    case com.android.internal.R.styleable.TextAppearance_letterSpacing:
911                        letterSpacing = appearance.getFloat(attr, 0);
912                        break;
913
914                    case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
915                        fontFeatureSettings = appearance.getString(attr);
916                        break;
917                }
918            }
919
920            appearance.recycle();
921        }
922
923        boolean editable = getDefaultEditable();
924        CharSequence inputMethod = null;
925        int numeric = 0;
926        CharSequence digits = null;
927        boolean phone = false;
928        boolean autotext = false;
929        int autocap = -1;
930        int buffertype = 0;
931        boolean selectallonfocus = false;
932        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
933                drawableBottom = null, drawableStart = null, drawableEnd = null;
934        ColorStateList drawableTint = null;
935        PorterDuff.Mode drawableTintMode = null;
936        int drawablePadding = 0;
937        int ellipsize = -1;
938        boolean singleLine = false;
939        int maxlength = -1;
940        CharSequence text = "";
941        CharSequence hint = null;
942        boolean password = false;
943        int autoSizeMinTextSizeInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
944        int autoSizeMaxTextSizeInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
945        int autoSizeStepGranularityInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
946        int inputType = EditorInfo.TYPE_NULL;
947        a = theme.obtainStyledAttributes(
948                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
949
950        int n = a.getIndexCount();
951
952        boolean fromResourceId = false;
953        for (int i = 0; i < n; i++) {
954            int attr = a.getIndex(i);
955
956            switch (attr) {
957                case com.android.internal.R.styleable.TextView_editable:
958                    editable = a.getBoolean(attr, editable);
959                    break;
960
961                case com.android.internal.R.styleable.TextView_inputMethod:
962                    inputMethod = a.getText(attr);
963                    break;
964
965                case com.android.internal.R.styleable.TextView_numeric:
966                    numeric = a.getInt(attr, numeric);
967                    break;
968
969                case com.android.internal.R.styleable.TextView_digits:
970                    digits = a.getText(attr);
971                    break;
972
973                case com.android.internal.R.styleable.TextView_phoneNumber:
974                    phone = a.getBoolean(attr, phone);
975                    break;
976
977                case com.android.internal.R.styleable.TextView_autoText:
978                    autotext = a.getBoolean(attr, autotext);
979                    break;
980
981                case com.android.internal.R.styleable.TextView_capitalize:
982                    autocap = a.getInt(attr, autocap);
983                    break;
984
985                case com.android.internal.R.styleable.TextView_bufferType:
986                    buffertype = a.getInt(attr, buffertype);
987                    break;
988
989                case com.android.internal.R.styleable.TextView_selectAllOnFocus:
990                    selectallonfocus = a.getBoolean(attr, selectallonfocus);
991                    break;
992
993                case com.android.internal.R.styleable.TextView_autoLink:
994                    mAutoLinkMask = a.getInt(attr, 0);
995                    break;
996
997                case com.android.internal.R.styleable.TextView_linksClickable:
998                    mLinksClickable = a.getBoolean(attr, true);
999                    break;
1000
1001                case com.android.internal.R.styleable.TextView_drawableLeft:
1002                    drawableLeft = a.getDrawable(attr);
1003                    break;
1004
1005                case com.android.internal.R.styleable.TextView_drawableTop:
1006                    drawableTop = a.getDrawable(attr);
1007                    break;
1008
1009                case com.android.internal.R.styleable.TextView_drawableRight:
1010                    drawableRight = a.getDrawable(attr);
1011                    break;
1012
1013                case com.android.internal.R.styleable.TextView_drawableBottom:
1014                    drawableBottom = a.getDrawable(attr);
1015                    break;
1016
1017                case com.android.internal.R.styleable.TextView_drawableStart:
1018                    drawableStart = a.getDrawable(attr);
1019                    break;
1020
1021                case com.android.internal.R.styleable.TextView_drawableEnd:
1022                    drawableEnd = a.getDrawable(attr);
1023                    break;
1024
1025                case com.android.internal.R.styleable.TextView_drawableTint:
1026                    drawableTint = a.getColorStateList(attr);
1027                    break;
1028
1029                case com.android.internal.R.styleable.TextView_drawableTintMode:
1030                    drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
1031                    break;
1032
1033                case com.android.internal.R.styleable.TextView_drawablePadding:
1034                    drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
1035                    break;
1036
1037                case com.android.internal.R.styleable.TextView_maxLines:
1038                    setMaxLines(a.getInt(attr, -1));
1039                    break;
1040
1041                case com.android.internal.R.styleable.TextView_maxHeight:
1042                    setMaxHeight(a.getDimensionPixelSize(attr, -1));
1043                    break;
1044
1045                case com.android.internal.R.styleable.TextView_lines:
1046                    setLines(a.getInt(attr, -1));
1047                    break;
1048
1049                case com.android.internal.R.styleable.TextView_height:
1050                    setHeight(a.getDimensionPixelSize(attr, -1));
1051                    break;
1052
1053                case com.android.internal.R.styleable.TextView_minLines:
1054                    setMinLines(a.getInt(attr, -1));
1055                    break;
1056
1057                case com.android.internal.R.styleable.TextView_minHeight:
1058                    setMinHeight(a.getDimensionPixelSize(attr, -1));
1059                    break;
1060
1061                case com.android.internal.R.styleable.TextView_maxEms:
1062                    setMaxEms(a.getInt(attr, -1));
1063                    break;
1064
1065                case com.android.internal.R.styleable.TextView_maxWidth:
1066                    setMaxWidth(a.getDimensionPixelSize(attr, -1));
1067                    break;
1068
1069                case com.android.internal.R.styleable.TextView_ems:
1070                    setEms(a.getInt(attr, -1));
1071                    break;
1072
1073                case com.android.internal.R.styleable.TextView_width:
1074                    setWidth(a.getDimensionPixelSize(attr, -1));
1075                    break;
1076
1077                case com.android.internal.R.styleable.TextView_minEms:
1078                    setMinEms(a.getInt(attr, -1));
1079                    break;
1080
1081                case com.android.internal.R.styleable.TextView_minWidth:
1082                    setMinWidth(a.getDimensionPixelSize(attr, -1));
1083                    break;
1084
1085                case com.android.internal.R.styleable.TextView_gravity:
1086                    setGravity(a.getInt(attr, -1));
1087                    break;
1088
1089                case com.android.internal.R.styleable.TextView_hint:
1090                    hint = a.getText(attr);
1091                    break;
1092
1093                case com.android.internal.R.styleable.TextView_text:
1094                    fromResourceId = true;
1095                    text = a.getText(attr);
1096                    break;
1097
1098                case com.android.internal.R.styleable.TextView_scrollHorizontally:
1099                    if (a.getBoolean(attr, false)) {
1100                        setHorizontallyScrolling(true);
1101                    }
1102                    break;
1103
1104                case com.android.internal.R.styleable.TextView_singleLine:
1105                    singleLine = a.getBoolean(attr, singleLine);
1106                    break;
1107
1108                case com.android.internal.R.styleable.TextView_ellipsize:
1109                    ellipsize = a.getInt(attr, ellipsize);
1110                    break;
1111
1112                case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1113                    setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1114                    break;
1115
1116                case com.android.internal.R.styleable.TextView_includeFontPadding:
1117                    if (!a.getBoolean(attr, true)) {
1118                        setIncludeFontPadding(false);
1119                    }
1120                    break;
1121
1122                case com.android.internal.R.styleable.TextView_cursorVisible:
1123                    if (!a.getBoolean(attr, true)) {
1124                        setCursorVisible(false);
1125                    }
1126                    break;
1127
1128                case com.android.internal.R.styleable.TextView_maxLength:
1129                    maxlength = a.getInt(attr, -1);
1130                    break;
1131
1132                case com.android.internal.R.styleable.TextView_textScaleX:
1133                    setTextScaleX(a.getFloat(attr, 1.0f));
1134                    break;
1135
1136                case com.android.internal.R.styleable.TextView_freezesText:
1137                    mFreezesText = a.getBoolean(attr, false);
1138                    break;
1139
1140                case com.android.internal.R.styleable.TextView_shadowColor:
1141                    shadowcolor = a.getInt(attr, 0);
1142                    break;
1143
1144                case com.android.internal.R.styleable.TextView_shadowDx:
1145                    dx = a.getFloat(attr, 0);
1146                    break;
1147
1148                case com.android.internal.R.styleable.TextView_shadowDy:
1149                    dy = a.getFloat(attr, 0);
1150                    break;
1151
1152                case com.android.internal.R.styleable.TextView_shadowRadius:
1153                    r = a.getFloat(attr, 0);
1154                    break;
1155
1156                case com.android.internal.R.styleable.TextView_enabled:
1157                    setEnabled(a.getBoolean(attr, isEnabled()));
1158                    break;
1159
1160                case com.android.internal.R.styleable.TextView_textColorHighlight:
1161                    textColorHighlight = a.getColor(attr, textColorHighlight);
1162                    break;
1163
1164                case com.android.internal.R.styleable.TextView_textColor:
1165                    textColor = a.getColorStateList(attr);
1166                    break;
1167
1168                case com.android.internal.R.styleable.TextView_textColorHint:
1169                    textColorHint = a.getColorStateList(attr);
1170                    break;
1171
1172                case com.android.internal.R.styleable.TextView_textColorLink:
1173                    textColorLink = a.getColorStateList(attr);
1174                    break;
1175
1176                case com.android.internal.R.styleable.TextView_textSize:
1177                    textSize = a.getDimensionPixelSize(attr, textSize);
1178                    break;
1179
1180                case com.android.internal.R.styleable.TextView_typeface:
1181                    typefaceIndex = a.getInt(attr, typefaceIndex);
1182                    break;
1183
1184                case com.android.internal.R.styleable.TextView_textStyle:
1185                    styleIndex = a.getInt(attr, styleIndex);
1186                    break;
1187
1188                case com.android.internal.R.styleable.TextView_fontFamily:
1189                    try {
1190                        fontTypeface = a.getFont(attr);
1191                    } catch (UnsupportedOperationException e) {
1192                        // Expected if it is not a font resource.
1193                    }
1194                    if (fontTypeface == null) {
1195                        fontFamily = a.getString(attr);
1196                    }
1197                    fontFamilyExplicit = true;
1198                    break;
1199
1200                case com.android.internal.R.styleable.TextView_password:
1201                    password = a.getBoolean(attr, password);
1202                    break;
1203
1204                case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1205                    mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1206                    break;
1207
1208                case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1209                    mSpacingMult = a.getFloat(attr, mSpacingMult);
1210                    break;
1211
1212                case com.android.internal.R.styleable.TextView_inputType:
1213                    inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1214                    break;
1215
1216                case com.android.internal.R.styleable.TextView_allowUndo:
1217                    createEditorIfNeeded();
1218                    mEditor.mAllowUndo = a.getBoolean(attr, true);
1219                    break;
1220
1221                case com.android.internal.R.styleable.TextView_imeOptions:
1222                    createEditorIfNeeded();
1223                    mEditor.createInputContentTypeIfNeeded();
1224                    mEditor.mInputContentType.imeOptions = a.getInt(attr,
1225                            mEditor.mInputContentType.imeOptions);
1226                    break;
1227
1228                case com.android.internal.R.styleable.TextView_imeActionLabel:
1229                    createEditorIfNeeded();
1230                    mEditor.createInputContentTypeIfNeeded();
1231                    mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1232                    break;
1233
1234                case com.android.internal.R.styleable.TextView_imeActionId:
1235                    createEditorIfNeeded();
1236                    mEditor.createInputContentTypeIfNeeded();
1237                    mEditor.mInputContentType.imeActionId = a.getInt(attr,
1238                            mEditor.mInputContentType.imeActionId);
1239                    break;
1240
1241                case com.android.internal.R.styleable.TextView_privateImeOptions:
1242                    setPrivateImeOptions(a.getString(attr));
1243                    break;
1244
1245                case com.android.internal.R.styleable.TextView_editorExtras:
1246                    try {
1247                        setInputExtras(a.getResourceId(attr, 0));
1248                    } catch (XmlPullParserException e) {
1249                        Log.w(LOG_TAG, "Failure reading input extras", e);
1250                    } catch (IOException e) {
1251                        Log.w(LOG_TAG, "Failure reading input extras", e);
1252                    }
1253                    break;
1254
1255                case com.android.internal.R.styleable.TextView_textCursorDrawable:
1256                    mCursorDrawableRes = a.getResourceId(attr, 0);
1257                    break;
1258
1259                case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1260                    mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1261                    break;
1262
1263                case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1264                    mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1265                    break;
1266
1267                case com.android.internal.R.styleable.TextView_textSelectHandle:
1268                    mTextSelectHandleRes = a.getResourceId(attr, 0);
1269                    break;
1270
1271                case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1272                    mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1273                    break;
1274
1275                case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1276                    mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1277                    break;
1278
1279                case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1280                    mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1281                    break;
1282
1283                case com.android.internal.R.styleable.TextView_textIsSelectable:
1284                    setTextIsSelectable(a.getBoolean(attr, false));
1285                    break;
1286
1287                case com.android.internal.R.styleable.TextView_textAllCaps:
1288                    allCaps = a.getBoolean(attr, false);
1289                    break;
1290
1291                case com.android.internal.R.styleable.TextView_elegantTextHeight:
1292                    elegant = a.getBoolean(attr, false);
1293                    break;
1294
1295                case com.android.internal.R.styleable.TextView_letterSpacing:
1296                    letterSpacing = a.getFloat(attr, 0);
1297                    break;
1298
1299                case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1300                    fontFeatureSettings = a.getString(attr);
1301                    break;
1302
1303                case com.android.internal.R.styleable.TextView_breakStrategy:
1304                    mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1305                    break;
1306
1307                case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1308                    mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1309                    break;
1310
1311                case com.android.internal.R.styleable.TextView_autoSizeText:
1312                    mAutoSizeTextType = a.getInt(attr, AUTO_SIZE_TEXT_TYPE_NONE);
1313                    break;
1314
1315                case com.android.internal.R.styleable.TextView_autoSizeStepGranularity:
1316                    autoSizeStepGranularityInPx = a.getDimensionPixelSize(attr,
1317                        UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE);
1318                    break;
1319
1320                case com.android.internal.R.styleable.TextView_autoSizeMinTextSize:
1321                    autoSizeMinTextSizeInPx = a.getDimensionPixelSize(attr,
1322                        UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE);
1323                    break;
1324
1325                case com.android.internal.R.styleable.TextView_autoSizeMaxTextSize:
1326                    autoSizeMaxTextSizeInPx = a.getDimensionPixelSize(attr,
1327                        UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE);
1328                    break;
1329
1330                case com.android.internal.R.styleable.TextView_autoSizePresetSizes:
1331                    final int autoSizeStepSizeArrayResId = a.getResourceId(attr, 0);
1332                    if (autoSizeStepSizeArrayResId > 0) {
1333                        final TypedArray autoSizePreDefTextSizes = a.getResources()
1334                                .obtainTypedArray(autoSizeStepSizeArrayResId);
1335                        setupAutoSizeUniformPresetSizes(autoSizePreDefTextSizes);
1336                        autoSizePreDefTextSizes.recycle();
1337                    }
1338                    break;
1339            }
1340        }
1341
1342        a.recycle();
1343
1344        BufferType bufferType = BufferType.EDITABLE;
1345
1346        final int variation =
1347                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1348        final boolean passwordInputType = variation
1349                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1350        final boolean webPasswordInputType = variation
1351                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1352        final boolean numberPasswordInputType = variation
1353                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1354
1355        if (inputMethod != null) {
1356            Class<?> c;
1357
1358            try {
1359                c = Class.forName(inputMethod.toString());
1360            } catch (ClassNotFoundException ex) {
1361                throw new RuntimeException(ex);
1362            }
1363
1364            try {
1365                createEditorIfNeeded();
1366                mEditor.mKeyListener = (KeyListener) c.newInstance();
1367            } catch (InstantiationException ex) {
1368                throw new RuntimeException(ex);
1369            } catch (IllegalAccessException ex) {
1370                throw new RuntimeException(ex);
1371            }
1372            try {
1373                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1374                        ? inputType
1375                        : mEditor.mKeyListener.getInputType();
1376            } catch (IncompatibleClassChangeError e) {
1377                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1378            }
1379        } else if (digits != null) {
1380            createEditorIfNeeded();
1381            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1382            // If no input type was specified, we will default to generic
1383            // text, since we can't tell the IME about the set of digits
1384            // that was selected.
1385            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1386                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1387        } else if (inputType != EditorInfo.TYPE_NULL) {
1388            setInputType(inputType, true);
1389            // If set, the input type overrides what was set using the deprecated singleLine flag.
1390            singleLine = !isMultilineInputType(inputType);
1391        } else if (phone) {
1392            createEditorIfNeeded();
1393            mEditor.mKeyListener = DialerKeyListener.getInstance();
1394            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1395        } else if (numeric != 0) {
1396            createEditorIfNeeded();
1397            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1398                                                   (numeric & DECIMAL) != 0);
1399            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1400            if ((numeric & SIGNED) != 0) {
1401                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1402            }
1403            if ((numeric & DECIMAL) != 0) {
1404                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1405            }
1406            mEditor.mInputType = inputType;
1407        } else if (autotext || autocap != -1) {
1408            TextKeyListener.Capitalize cap;
1409
1410            inputType = EditorInfo.TYPE_CLASS_TEXT;
1411
1412            switch (autocap) {
1413                case 1:
1414                    cap = TextKeyListener.Capitalize.SENTENCES;
1415                    inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1416                    break;
1417
1418                case 2:
1419                    cap = TextKeyListener.Capitalize.WORDS;
1420                    inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1421                    break;
1422
1423                case 3:
1424                    cap = TextKeyListener.Capitalize.CHARACTERS;
1425                    inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1426                    break;
1427
1428                default:
1429                    cap = TextKeyListener.Capitalize.NONE;
1430                    break;
1431            }
1432
1433            createEditorIfNeeded();
1434            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1435            mEditor.mInputType = inputType;
1436        } else if (editable) {
1437            createEditorIfNeeded();
1438            mEditor.mKeyListener = TextKeyListener.getInstance();
1439            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1440        } else if (isTextSelectable()) {
1441            // Prevent text changes from keyboard.
1442            if (mEditor != null) {
1443                mEditor.mKeyListener = null;
1444                mEditor.mInputType = EditorInfo.TYPE_NULL;
1445            }
1446            bufferType = BufferType.SPANNABLE;
1447            // So that selection can be changed using arrow keys and touch is handled.
1448            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1449        } else {
1450            if (mEditor != null) mEditor.mKeyListener = null;
1451
1452            switch (buffertype) {
1453                case 0:
1454                    bufferType = BufferType.NORMAL;
1455                    break;
1456                case 1:
1457                    bufferType = BufferType.SPANNABLE;
1458                    break;
1459                case 2:
1460                    bufferType = BufferType.EDITABLE;
1461                    break;
1462            }
1463        }
1464
1465        if (mEditor != null) {
1466            mEditor.adjustInputType(password, passwordInputType, webPasswordInputType,
1467                    numberPasswordInputType);
1468        }
1469
1470        if (selectallonfocus) {
1471            createEditorIfNeeded();
1472            mEditor.mSelectAllOnFocus = true;
1473
1474            if (bufferType == BufferType.NORMAL) {
1475                bufferType = BufferType.SPANNABLE;
1476            }
1477        }
1478
1479        // Set up the tint (if needed) before setting the drawables so that it
1480        // gets applied correctly.
1481        if (drawableTint != null || drawableTintMode != null) {
1482            if (mDrawables == null) {
1483                mDrawables = new Drawables(context);
1484            }
1485            if (drawableTint != null) {
1486                mDrawables.mTintList = drawableTint;
1487                mDrawables.mHasTint = true;
1488            }
1489            if (drawableTintMode != null) {
1490                mDrawables.mTintMode = drawableTintMode;
1491                mDrawables.mHasTintMode = true;
1492            }
1493        }
1494
1495        // This call will save the initial left/right drawables
1496        setCompoundDrawablesWithIntrinsicBounds(
1497                drawableLeft, drawableTop, drawableRight, drawableBottom);
1498        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1499        setCompoundDrawablePadding(drawablePadding);
1500
1501        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1502        // of lines of height are unchanged for multi-line TextViews.
1503        setInputTypeSingleLine(singleLine);
1504        applySingleLine(singleLine, singleLine, singleLine);
1505
1506        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1507            ellipsize = 3; // END
1508        }
1509
1510        switch (ellipsize) {
1511            case 1:
1512                setEllipsize(TextUtils.TruncateAt.START);
1513                break;
1514            case 2:
1515                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1516                break;
1517            case 3:
1518                setEllipsize(TextUtils.TruncateAt.END);
1519                break;
1520            case 4:
1521                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1522                    setHorizontalFadingEdgeEnabled(true);
1523                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1524                } else {
1525                    setHorizontalFadingEdgeEnabled(false);
1526                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1527                }
1528                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1529                break;
1530        }
1531
1532        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1533        setHintTextColor(textColorHint);
1534        setLinkTextColor(textColorLink);
1535        if (textColorHighlight != 0) {
1536            setHighlightColor(textColorHighlight);
1537        }
1538        setRawTextSize(textSize);
1539        setElegantTextHeight(elegant);
1540        setLetterSpacing(letterSpacing);
1541        setFontFeatureSettings(fontFeatureSettings);
1542
1543        if (allCaps) {
1544            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1545        }
1546
1547        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1548            setTransformationMethod(PasswordTransformationMethod.getInstance());
1549            typefaceIndex = MONOSPACE;
1550        } else if (mEditor != null
1551                && (mEditor.mInputType
1552                        & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1553                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1554            typefaceIndex = MONOSPACE;
1555        }
1556
1557        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1558            fontFamily = null;
1559        }
1560        setTypefaceFromAttrs(fontTypeface, fontFamily, typefaceIndex, styleIndex);
1561
1562        if (shadowcolor != 0) {
1563            setShadowLayer(r, dx, dy, shadowcolor);
1564        }
1565
1566        if (maxlength >= 0) {
1567            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1568        } else {
1569            setFilters(NO_FILTERS);
1570        }
1571
1572        setText(text, bufferType);
1573        if (fromResourceId) {
1574            mTextFromResource = true;
1575        }
1576
1577        if (hint != null) setHint(hint);
1578
1579        /*
1580         * Views are not normally clickable unless specified to be.
1581         * However, TextViews that have input or movement methods *are*
1582         * clickable by default. By setting clickable here, we implicitly set focusable as well
1583         * if not overridden by the developer.
1584         */
1585        a = context.obtainStyledAttributes(
1586                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1587        boolean canInputOrMove = (mMovement != null || getKeyListener() != null);
1588        boolean clickable = canInputOrMove || isClickable();
1589        boolean longClickable = canInputOrMove || isLongClickable();
1590
1591        n = a.getIndexCount();
1592        for (int i = 0; i < n; i++) {
1593            int attr = a.getIndex(i);
1594
1595            switch (attr) {
1596                case com.android.internal.R.styleable.View_clickable:
1597                    clickable = a.getBoolean(attr, clickable);
1598                    break;
1599
1600                case com.android.internal.R.styleable.View_longClickable:
1601                    longClickable = a.getBoolean(attr, longClickable);
1602                    break;
1603            }
1604        }
1605        a.recycle();
1606
1607        setClickable(clickable);
1608        setLongClickable(longClickable);
1609
1610        if (mEditor != null) mEditor.prepareCursorControllers();
1611
1612        // If not explicitly specified this view is important for accessibility.
1613        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1614            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1615        }
1616
1617        if (supportsAutoSizeText()) {
1618            if (mAutoSizeTextType == AUTO_SIZE_TEXT_TYPE_UNIFORM) {
1619                // If uniform auto-size has been specified but preset values have not been set then
1620                // replace the auto-size configuration values that have not been specified with the
1621                // defaults.
1622                if (!mHasPresetAutoSizeValues) {
1623                    final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
1624
1625                    if (autoSizeMinTextSizeInPx == UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE) {
1626                        autoSizeMinTextSizeInPx = (int) TypedValue.applyDimension(
1627                                TypedValue.COMPLEX_UNIT_SP,
1628                                DEFAULT_AUTO_SIZE_MIN_TEXT_SIZE_IN_SP,
1629                                displayMetrics);
1630                    }
1631
1632                    if (autoSizeMaxTextSizeInPx == UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE) {
1633                        autoSizeMaxTextSizeInPx = (int) TypedValue.applyDimension(
1634                                TypedValue.COMPLEX_UNIT_SP,
1635                                DEFAULT_AUTO_SIZE_MAX_TEXT_SIZE_IN_SP,
1636                                displayMetrics);
1637                    }
1638
1639                    if (autoSizeMinTextSizeInPx == UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE) {
1640                        autoSizeStepGranularityInPx = DEFAULT_AUTO_SIZE_GRANULARITY_IN_PX;
1641                    }
1642
1643                    validateAndSetAutoSizeTextTypeUniformConfiguration(autoSizeMinTextSizeInPx,
1644                            autoSizeMaxTextSizeInPx,
1645                            autoSizeStepGranularityInPx);
1646                }
1647
1648                setupAutoSizeText();
1649            }
1650        } else {
1651            mAutoSizeTextType = AUTO_SIZE_TEXT_TYPE_NONE;
1652        }
1653    }
1654
1655    /**
1656     * Specify whether this widget should automatically scale the text to try to perfectly fit
1657     * within the layout bounds by using the default auto-size configuration.
1658     *
1659     * @param autoSizeTextType the type of auto-size. Must be one of
1660     *        {@link TextView#AUTO_SIZE_TEXT_TYPE_NONE} or
1661     *        {@link TextView#AUTO_SIZE_TEXT_TYPE_UNIFORM}
1662     *
1663     * @attr ref android.R.styleable#TextView_autoSizeText
1664     *
1665     * @see #getAutoSizeTextType()
1666     */
1667    public void setAutoSizeTextTypeWithDefaults(@AutoSizeTextType int autoSizeTextType) {
1668        if (supportsAutoSizeText()) {
1669            switch (autoSizeTextType) {
1670                case AUTO_SIZE_TEXT_TYPE_NONE:
1671                    clearAutoSizeConfiguration();
1672                    break;
1673                case AUTO_SIZE_TEXT_TYPE_UNIFORM:
1674                    final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
1675                    final int autoSizeMinTextSizeInPx = (int) TypedValue.applyDimension(
1676                            TypedValue.COMPLEX_UNIT_SP,
1677                            DEFAULT_AUTO_SIZE_MIN_TEXT_SIZE_IN_SP,
1678                            displayMetrics);
1679                    final int autoSizeMaxTextSizeInPx = (int) TypedValue.applyDimension(
1680                            TypedValue.COMPLEX_UNIT_SP,
1681                            DEFAULT_AUTO_SIZE_MAX_TEXT_SIZE_IN_SP,
1682                            displayMetrics);
1683
1684                    validateAndSetAutoSizeTextTypeUniformConfiguration(
1685                            autoSizeMinTextSizeInPx,
1686                            autoSizeMaxTextSizeInPx,
1687                            DEFAULT_AUTO_SIZE_GRANULARITY_IN_PX);
1688                    setupAutoSizeText();
1689                    break;
1690                default:
1691                    throw new IllegalArgumentException(
1692                            "Unknown auto-size text type: " + autoSizeTextType);
1693            }
1694        }
1695    }
1696
1697    /**
1698     * Specify whether this widget should automatically scale the text to try to perfectly fit
1699     * within the layout bounds. If all the configuration params are valid the type of auto-size is
1700     * set to {@link #AUTO_SIZE_TEXT_TYPE_UNIFORM}.
1701     *
1702     * @param autoSizeMinTextSize the minimum text size available for auto-size
1703     * @param autoSizeMaxTextSize the maximum text size available for auto-size
1704     * @param autoSizeStepGranularity the auto-size step granularity. It is used in conjunction with
1705     *                                the minimum and maximum text size in order to build the set of
1706     *                                text sizes the system uses to choose from when auto-sizing
1707     * @param unit the desired dimension unit for all sizes above. See {@link TypedValue} for the
1708     *             possible dimension units
1709     *
1710     * @throws IllegalArgumentException if any of the configuration params are invalid.
1711     *
1712     * @attr ref android.R.styleable#TextView_autoSizeText
1713     * @attr ref android.R.styleable#TextView_autoSizeMinTextSize
1714     * @attr ref android.R.styleable#TextView_autoSizeMaxTextSize
1715     * @attr ref android.R.styleable#TextView_autoSizeStepGranularity
1716     *
1717     * @see #setAutoSizeTextTypeWithDefaults(int)
1718     * @see #setAutoSizeTextTypeUniformWithPresetSizes(int[], int)
1719     * @see #getAutoSizeMinTextSize()
1720     * @see #getAutoSizeMaxTextSize()
1721     * @see #getAutoSizeStepGranularity()
1722     * @see #getAutoSizeTextAvailableSizes()
1723     */
1724    public void setAutoSizeTextTypeUniformWithConfiguration(
1725            int autoSizeMinTextSize,
1726            int autoSizeMaxTextSize,
1727            int autoSizeStepGranularity,
1728            int unit) throws IllegalArgumentException {
1729        if (supportsAutoSizeText()) {
1730            final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
1731            final int autoSizeMinTextSizeInPx = (int) TypedValue.applyDimension(
1732                    unit, autoSizeMinTextSize, displayMetrics);
1733            final int autoSizeMaxTextSizeInPx = (int) TypedValue.applyDimension(
1734                    unit, autoSizeMaxTextSize, displayMetrics);
1735            final int autoSizeStepGranularityInPx = (int) TypedValue.applyDimension(
1736                    unit, autoSizeStepGranularity, displayMetrics);
1737
1738            validateAndSetAutoSizeTextTypeUniformConfiguration(autoSizeMinTextSizeInPx,
1739                    autoSizeMaxTextSizeInPx,
1740                    autoSizeStepGranularityInPx);
1741            setupAutoSizeText();
1742        }
1743    }
1744
1745    /**
1746     * Specify whether this widget should automatically scale the text to try to perfectly fit
1747     * within the layout bounds. If at least one value from the <code>presetSizes</code> is valid
1748     * then the type of auto-size is set to {@link #AUTO_SIZE_TEXT_TYPE_UNIFORM}.
1749     *
1750     * @param presetSizes an {@code int} array of sizes in pixels
1751     * @param unit the desired dimension unit for the preset sizes above. See {@link TypedValue} for
1752     *             the possible dimension units
1753     *
1754     * @throws IllegalArgumentException if all of the <code>presetSizes</code> are invalid.
1755     *
1756     * @attr ref android.R.styleable#TextView_autoSizeText
1757     * @attr ref android.R.styleable#TextView_autoSizePresetSizes
1758     *
1759     * @see #setAutoSizeTextTypeWithDefaults(int)
1760     * @see #setAutoSizeTextTypeUniformWithConfiguration(int, int, int, int)
1761     * @see #getAutoSizeMinTextSize()
1762     * @see #getAutoSizeMaxTextSize()
1763     * @see #getAutoSizeTextAvailableSizes()
1764     */
1765    public void setAutoSizeTextTypeUniformWithPresetSizes(@NonNull int[] presetSizes, int unit)
1766            throws IllegalArgumentException {
1767        if (supportsAutoSizeText()) {
1768            final int presetSizesLength = presetSizes.length;
1769            if (presetSizesLength > 0) {
1770                int[] presetSizesInPx = new int[presetSizesLength];
1771
1772                if (unit == TypedValue.COMPLEX_UNIT_PX) {
1773                    presetSizesInPx = Arrays.copyOf(presetSizes, presetSizesLength);
1774                } else {
1775                    final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
1776                    // Convert all to sizes to pixels.
1777                    for (int i = 0; i < presetSizesLength; i++) {
1778                        presetSizesInPx[i] = (int) TypedValue.applyDimension(unit, presetSizes[i],
1779                            displayMetrics);
1780                    }
1781                }
1782
1783                mAutoSizeTextSizesInPx = cleanupAutoSizePresetSizes(presetSizesInPx);
1784                final int sizesLength = mAutoSizeTextSizesInPx.length;
1785                mHasPresetAutoSizeValues = sizesLength > 0;
1786                if (mHasPresetAutoSizeValues) {
1787                    mAutoSizeTextType = AUTO_SIZE_TEXT_TYPE_UNIFORM;
1788                    mAutoSizeMinTextSizeInPx = mAutoSizeTextSizesInPx[0];
1789                    mAutoSizeMaxTextSizeInPx = mAutoSizeTextSizesInPx[sizesLength - 1];
1790                    mAutoSizeStepGranularityInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
1791                } else {
1792                    throw new IllegalArgumentException("None of the preset sizes is valid: "
1793                        + Arrays.toString(presetSizes));
1794                }
1795            } else {
1796                mHasPresetAutoSizeValues = false;
1797            }
1798            setupAutoSizeText();
1799        }
1800    }
1801
1802    /**
1803     * Returns the type of auto-size set for this widget.
1804     *
1805     * @return an {@code int} corresponding to one of the auto-size types:
1806     *         {@link TextView#AUTO_SIZE_TEXT_TYPE_NONE} or
1807     *         {@link TextView#AUTO_SIZE_TEXT_TYPE_UNIFORM}
1808     *
1809     * @attr ref android.R.styleable#TextView_autoSizeText
1810     *
1811     * @see #setAutoSizeTextTypeWithDefaults(int)
1812     * @see #setAutoSizeTextTypeUniformWithConfiguration(int, int, int, int)
1813     * @see #setAutoSizeTextTypeUniformWithPresetSizes(int[], int)
1814     */
1815    @AutoSizeTextType
1816    public int getAutoSizeTextType() {
1817        return mAutoSizeTextType;
1818    }
1819
1820    /**
1821     * @return the current auto-size step granularity in pixels.
1822     *
1823     * @attr ref android.R.styleable#TextView_autoSizeStepGranularity
1824     *
1825     * @see #setAutoSizeTextTypeUniformWithConfiguration(int, int, int, int)
1826     */
1827    public int getAutoSizeStepGranularity() {
1828        return mAutoSizeStepGranularityInPx;
1829    }
1830
1831    /**
1832     * @return the current auto-size minimum text size in pixels (the default is 12sp). Note that
1833     *         if auto-size has not been configured this function returns {@code -1}.
1834     *
1835     * @attr ref android.R.styleable#TextView_autoSizeMinTextSize
1836     *
1837     * @see #setAutoSizeTextTypeUniformWithConfiguration(int, int, int, int)
1838     * @see #setAutoSizeTextTypeUniformWithPresetSizes(int[], int)
1839     */
1840    public int getAutoSizeMinTextSize() {
1841        return mAutoSizeMinTextSizeInPx;
1842    }
1843
1844    /**
1845     * @return the current auto-size maximum text size in pixels (the default is 112sp). Note that
1846     *         if auto-size has not been configured this function returns {@code -1}.
1847     *
1848     * @attr ref android.R.styleable#TextView_autoSizeMaxTextSize
1849     *
1850     * @see #setAutoSizeTextTypeUniformWithConfiguration(int, int, int, int)
1851     * @see #setAutoSizeTextTypeUniformWithPresetSizes(int[], int)
1852     */
1853    public int getAutoSizeMaxTextSize() {
1854        return mAutoSizeMaxTextSizeInPx;
1855    }
1856
1857    /**
1858     * @return the current auto-size {@code int} sizes array (in pixels).
1859     *
1860     * @see #setAutoSizeTextTypeUniformWithConfiguration(int, int, int, int)
1861     * @see #setAutoSizeTextTypeUniformWithPresetSizes(int[], int)
1862     */
1863    public int[] getAutoSizeTextAvailableSizes() {
1864        return mAutoSizeTextSizesInPx;
1865    }
1866
1867    private void setupAutoSizeUniformPresetSizes(TypedArray textSizes) {
1868        final int textSizesLength = textSizes.length();
1869        final int[] parsedSizes = new int[textSizesLength];
1870
1871        if (textSizesLength > 0) {
1872            for (int i = 0; i < textSizesLength; i++) {
1873                parsedSizes[i] = textSizes.getDimensionPixelSize(i, -1);
1874            }
1875            mAutoSizeTextSizesInPx = cleanupAutoSizePresetSizes(parsedSizes);
1876            mHasPresetAutoSizeValues = mAutoSizeTextSizesInPx.length > 0;
1877        }
1878    }
1879
1880    /**
1881     * If all params are valid then save the auto-size configuration.
1882     *
1883     * @throws IllegalArgumentException if any of the params are invalid
1884     */
1885    private void validateAndSetAutoSizeTextTypeUniformConfiguration(
1886            int autoSizeMinTextSizeInPx,
1887            int autoSizeMaxTextSizeInPx,
1888            int autoSizeStepGranularityInPx) throws IllegalArgumentException {
1889        // First validate.
1890        if (autoSizeMinTextSizeInPx <= 0) {
1891            throw new IllegalArgumentException("Minimum auto-size text size ("
1892                + autoSizeMinTextSizeInPx  + "px) is less or equal to 0px)");
1893        }
1894
1895        if (autoSizeMaxTextSizeInPx <= autoSizeMinTextSizeInPx) {
1896            throw new IllegalArgumentException("Maximum auto-size text size ("
1897                + autoSizeMaxTextSizeInPx + "px) is less or equal to minimum auto-size "
1898                + "text size (" + autoSizeMinTextSizeInPx + "px)");
1899        }
1900
1901        if (autoSizeStepGranularityInPx <= 0) {
1902            throw new IllegalArgumentException("Minimum auto-size text size ("
1903                + autoSizeStepGranularityInPx + "px) is less or equal to 0px)");
1904        }
1905
1906        // All good, persist the configuration.
1907        mAutoSizeTextType = AUTO_SIZE_TEXT_TYPE_UNIFORM;
1908        mAutoSizeMinTextSizeInPx = autoSizeMinTextSizeInPx;
1909        mAutoSizeMaxTextSizeInPx = autoSizeMaxTextSizeInPx;
1910        mAutoSizeStepGranularityInPx = autoSizeStepGranularityInPx;
1911        mHasPresetAutoSizeValues = false;
1912    }
1913
1914    private void clearAutoSizeConfiguration() {
1915        mAutoSizeTextType = AUTO_SIZE_TEXT_TYPE_NONE;
1916        mAutoSizeMinTextSizeInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
1917        mAutoSizeMaxTextSizeInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
1918        mAutoSizeStepGranularityInPx = UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE;
1919        mAutoSizeTextSizesInPx = EmptyArray.INT;
1920        mNeedsAutoSizeText = false;
1921    }
1922
1923    // Returns distinct sorted positive values.
1924    private int[] cleanupAutoSizePresetSizes(int[] presetValues) {
1925        final int presetValuesLength = presetValues.length;
1926        if (presetValuesLength == 0) {
1927            return presetValues;
1928        }
1929        Arrays.sort(presetValues);
1930
1931        final IntArray uniqueValidSizes = new IntArray();
1932        for (int i = 0; i < presetValuesLength; i++) {
1933            final int currentPresetValue = presetValues[i];
1934
1935            if (currentPresetValue > 0
1936                    && uniqueValidSizes.binarySearch(currentPresetValue) < 0) {
1937                uniqueValidSizes.add(currentPresetValue);
1938            }
1939        }
1940
1941        return presetValuesLength == uniqueValidSizes.size()
1942            ? presetValues
1943            : uniqueValidSizes.toArray();
1944    }
1945
1946    private void setupAutoSizeText() {
1947        if (supportsAutoSizeText() && mAutoSizeTextType == AUTO_SIZE_TEXT_TYPE_UNIFORM) {
1948            // Calculate the sizes set based on minimum size, maximum size and step size if we do
1949            // not have a predefined set of sizes or if the current sizes array is empty.
1950            if (!mHasPresetAutoSizeValues || mAutoSizeTextSizesInPx.length == 0) {
1951                // Calculate sizes to choose from based on the current auto-size configuration.
1952                int autoSizeValuesLength = (int) Math.ceil(
1953                        (mAutoSizeMaxTextSizeInPx - mAutoSizeMinTextSizeInPx)
1954                                / (float) mAutoSizeStepGranularityInPx);
1955                // Also reserve a slot for the max size if it fits.
1956                if ((mAutoSizeMaxTextSizeInPx - mAutoSizeMinTextSizeInPx)
1957                        % mAutoSizeStepGranularityInPx == 0) {
1958                    autoSizeValuesLength++;
1959                }
1960                mAutoSizeTextSizesInPx = new int[autoSizeValuesLength];
1961                int sizeToAdd = mAutoSizeMinTextSizeInPx;
1962                for (int i = 0; i < autoSizeValuesLength; i++) {
1963                    mAutoSizeTextSizesInPx[i] = sizeToAdd;
1964                    sizeToAdd += mAutoSizeStepGranularityInPx;
1965                }
1966            }
1967
1968            mNeedsAutoSizeText = true;
1969            autoSizeText();
1970        }
1971    }
1972
1973    private int[] parseDimensionArray(TypedArray dimens) {
1974        if (dimens == null) {
1975            return null;
1976        }
1977        int[] result = new int[dimens.length()];
1978        for (int i = 0; i < result.length; i++) {
1979            result[i] = dimens.getDimensionPixelSize(i, 0);
1980        }
1981        return result;
1982    }
1983
1984    /**
1985     * @hide
1986     */
1987    @Override
1988    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1989        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1990            if (resultCode == Activity.RESULT_OK && data != null) {
1991                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1992                if (result != null) {
1993                    if (isTextEditable()) {
1994                        replaceSelectionWithText(result);
1995                        if (mEditor != null) {
1996                            mEditor.refreshTextActionMode();
1997                        }
1998                    } else {
1999                        if (result.length() > 0) {
2000                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
2001                                .show();
2002                        }
2003                    }
2004                }
2005            } else if (mText instanceof Spannable) {
2006                // Reset the selection.
2007                Selection.setSelection((Spannable) mText, getSelectionEnd());
2008            }
2009        }
2010    }
2011
2012    private void setTypefaceFromAttrs(Typeface fontTypeface, String familyName, int typefaceIndex,
2013            int styleIndex) {
2014        Typeface tf = fontTypeface;
2015        if (tf == null && familyName != null) {
2016            tf = Typeface.create(familyName, styleIndex);
2017        }
2018        if (tf != null) {
2019            setTypeface(tf);
2020            return;
2021        }
2022        switch (typefaceIndex) {
2023            case SANS:
2024                tf = Typeface.SANS_SERIF;
2025                break;
2026
2027            case SERIF:
2028                tf = Typeface.SERIF;
2029                break;
2030
2031            case MONOSPACE:
2032                tf = Typeface.MONOSPACE;
2033                break;
2034        }
2035
2036        setTypeface(tf, styleIndex);
2037    }
2038
2039    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
2040        boolean hasRelativeDrawables = (start != null) || (end != null);
2041        if (hasRelativeDrawables) {
2042            Drawables dr = mDrawables;
2043            if (dr == null) {
2044                mDrawables = dr = new Drawables(getContext());
2045            }
2046            mDrawables.mOverride = true;
2047            final Rect compoundRect = dr.mCompoundRect;
2048            int[] state = getDrawableState();
2049            if (start != null) {
2050                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2051                start.setState(state);
2052                start.copyBounds(compoundRect);
2053                start.setCallback(this);
2054
2055                dr.mDrawableStart = start;
2056                dr.mDrawableSizeStart = compoundRect.width();
2057                dr.mDrawableHeightStart = compoundRect.height();
2058            } else {
2059                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2060            }
2061            if (end != null) {
2062                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2063                end.setState(state);
2064                end.copyBounds(compoundRect);
2065                end.setCallback(this);
2066
2067                dr.mDrawableEnd = end;
2068                dr.mDrawableSizeEnd = compoundRect.width();
2069                dr.mDrawableHeightEnd = compoundRect.height();
2070            } else {
2071                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2072            }
2073            resetResolvedDrawables();
2074            resolveDrawables();
2075            applyCompoundDrawableTint();
2076        }
2077    }
2078
2079    @android.view.RemotableViewMethod
2080    @Override
2081    public void setEnabled(boolean enabled) {
2082        if (enabled == isEnabled()) {
2083            return;
2084        }
2085
2086        if (!enabled) {
2087            // Hide the soft input if the currently active TextView is disabled
2088            InputMethodManager imm = InputMethodManager.peekInstance();
2089            if (imm != null && imm.isActive(this)) {
2090                imm.hideSoftInputFromWindow(getWindowToken(), 0);
2091            }
2092        }
2093
2094        super.setEnabled(enabled);
2095
2096        if (enabled) {
2097            // Make sure IME is updated with current editor info.
2098            InputMethodManager imm = InputMethodManager.peekInstance();
2099            if (imm != null) imm.restartInput(this);
2100        }
2101
2102        // Will change text color
2103        if (mEditor != null) {
2104            mEditor.invalidateTextDisplayList();
2105            mEditor.prepareCursorControllers();
2106
2107            // start or stop the cursor blinking as appropriate
2108            mEditor.makeBlink();
2109        }
2110    }
2111
2112    /**
2113     * Sets the typeface and style in which the text should be displayed,
2114     * and turns on the fake bold and italic bits in the Paint if the
2115     * Typeface that you provided does not have all the bits in the
2116     * style that you specified.
2117     *
2118     * @attr ref android.R.styleable#TextView_typeface
2119     * @attr ref android.R.styleable#TextView_textStyle
2120     */
2121    public void setTypeface(Typeface tf, int style) {
2122        if (style > 0) {
2123            if (tf == null) {
2124                tf = Typeface.defaultFromStyle(style);
2125            } else {
2126                tf = Typeface.create(tf, style);
2127            }
2128
2129            setTypeface(tf);
2130            // now compute what (if any) algorithmic styling is needed
2131            int typefaceStyle = tf != null ? tf.getStyle() : 0;
2132            int need = style & ~typefaceStyle;
2133            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
2134            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
2135        } else {
2136            mTextPaint.setFakeBoldText(false);
2137            mTextPaint.setTextSkewX(0);
2138            setTypeface(tf);
2139        }
2140    }
2141
2142    /**
2143     * Subclasses override this to specify that they have a KeyListener
2144     * by default even if not specifically called for in the XML options.
2145     */
2146    protected boolean getDefaultEditable() {
2147        return false;
2148    }
2149
2150    /**
2151     * Subclasses override this to specify a default movement method.
2152     */
2153    protected MovementMethod getDefaultMovementMethod() {
2154        return null;
2155    }
2156
2157    /**
2158     * Return the text that TextView is displaying. If {@link #setText(CharSequence)} was called
2159     * with an argument of {@link android.widget.TextView.BufferType#SPANNABLE BufferType.SPANNABLE}
2160     * or {@link android.widget.TextView.BufferType#EDITABLE BufferType.EDITABLE}, you can cast
2161     * the return value from this method to Spannable or Editable, respectively.
2162     * <p/>
2163     * The content of the return value should not be modified. If you want a modifiable one, you
2164     * should make your own copy first.
2165     *
2166     * @attr ref android.R.styleable#TextView_text
2167     */
2168    @ViewDebug.CapturedViewProperty
2169    public CharSequence getText() {
2170        return mText;
2171    }
2172
2173    /**
2174     * Returns the length, in characters, of the text managed by this TextView
2175     */
2176    public int length() {
2177        return mText.length();
2178    }
2179
2180    /**
2181     * Return the text that TextView is displaying as an Editable object. If the text is not
2182     * editable, null is returned.
2183     *
2184     * @see #getText
2185     */
2186    public Editable getEditableText() {
2187        return (mText instanceof Editable) ? (Editable) mText : null;
2188    }
2189
2190    /**
2191     * @return the height of one standard line in pixels.  Note that markup
2192     * within the text can cause individual lines to be taller or shorter
2193     * than this height, and the layout may contain additional first-
2194     * or last-line padding.
2195     */
2196    public int getLineHeight() {
2197        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
2198    }
2199
2200    /**
2201     * @return the Layout that is currently being used to display the text.
2202     * This can be null if the text or width has recently changes.
2203     */
2204    public final Layout getLayout() {
2205        return mLayout;
2206    }
2207
2208    /**
2209     * @return the Layout that is currently being used to display the hint text.
2210     * This can be null.
2211     */
2212    final Layout getHintLayout() {
2213        return mHintLayout;
2214    }
2215
2216    /**
2217     * Retrieve the {@link android.content.UndoManager} that is currently associated
2218     * with this TextView.  By default there is no associated UndoManager, so null
2219     * is returned.  One can be associated with the TextView through
2220     * {@link #setUndoManager(android.content.UndoManager, String)}
2221     *
2222     * @hide
2223     */
2224    public final UndoManager getUndoManager() {
2225        // TODO: Consider supporting a global undo manager.
2226        throw new UnsupportedOperationException("not implemented");
2227    }
2228
2229
2230    /**
2231     * @hide
2232     */
2233    @VisibleForTesting
2234    public final Editor getEditorForTesting() {
2235        return mEditor;
2236    }
2237
2238    /**
2239     * Associate an {@link android.content.UndoManager} with this TextView.  Once
2240     * done, all edit operations on the TextView will result in appropriate
2241     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
2242     * stack.
2243     *
2244     * @param undoManager The {@link android.content.UndoManager} to associate with
2245     * this TextView, or null to clear any existing association.
2246     * @param tag String tag identifying this particular TextView owner in the
2247     * UndoManager.  This is used to keep the correct association with the
2248     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
2249     *
2250     * @hide
2251     */
2252    public final void setUndoManager(UndoManager undoManager, String tag) {
2253        // TODO: Consider supporting a global undo manager. An implementation will need to:
2254        // * createEditorIfNeeded()
2255        // * Promote to BufferType.EDITABLE if needed.
2256        // * Update the UndoManager and UndoOwner.
2257        // Likewise it will need to be able to restore the default UndoManager.
2258        throw new UnsupportedOperationException("not implemented");
2259    }
2260
2261    /**
2262     * @return the current key listener for this TextView.
2263     * This will frequently be null for non-EditText TextViews.
2264     *
2265     * @attr ref android.R.styleable#TextView_numeric
2266     * @attr ref android.R.styleable#TextView_digits
2267     * @attr ref android.R.styleable#TextView_phoneNumber
2268     * @attr ref android.R.styleable#TextView_inputMethod
2269     * @attr ref android.R.styleable#TextView_capitalize
2270     * @attr ref android.R.styleable#TextView_autoText
2271     */
2272    public final KeyListener getKeyListener() {
2273        return mEditor == null ? null : mEditor.mKeyListener;
2274    }
2275
2276    /**
2277     * Sets the key listener to be used with this TextView.  This can be null
2278     * to disallow user input.  Note that this method has significant and
2279     * subtle interactions with soft keyboards and other input method:
2280     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
2281     * for important details.  Calling this method will replace the current
2282     * content type of the text view with the content type returned by the
2283     * key listener.
2284     * <p>
2285     * Be warned that if you want a TextView with a key listener or movement
2286     * method not to be focusable, or if you want a TextView without a
2287     * key listener or movement method to be focusable, you must call
2288     * {@link #setFocusable} again after calling this to get the focusability
2289     * back the way you want it.
2290     *
2291     * @attr ref android.R.styleable#TextView_numeric
2292     * @attr ref android.R.styleable#TextView_digits
2293     * @attr ref android.R.styleable#TextView_phoneNumber
2294     * @attr ref android.R.styleable#TextView_inputMethod
2295     * @attr ref android.R.styleable#TextView_capitalize
2296     * @attr ref android.R.styleable#TextView_autoText
2297     */
2298    public void setKeyListener(KeyListener input) {
2299        setKeyListenerOnly(input);
2300        fixFocusableAndClickableSettings();
2301
2302        if (input != null) {
2303            createEditorIfNeeded();
2304            try {
2305                mEditor.mInputType = mEditor.mKeyListener.getInputType();
2306            } catch (IncompatibleClassChangeError e) {
2307                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
2308            }
2309            // Change inputType, without affecting transformation.
2310            // No need to applySingleLine since mSingleLine is unchanged.
2311            setInputTypeSingleLine(mSingleLine);
2312        } else {
2313            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
2314        }
2315
2316        InputMethodManager imm = InputMethodManager.peekInstance();
2317        if (imm != null) imm.restartInput(this);
2318    }
2319
2320    private void setKeyListenerOnly(KeyListener input) {
2321        if (mEditor == null && input == null) return; // null is the default value
2322
2323        createEditorIfNeeded();
2324        if (mEditor.mKeyListener != input) {
2325            mEditor.mKeyListener = input;
2326            if (input != null && !(mText instanceof Editable)) {
2327                setText(mText);
2328            }
2329
2330            setFilters((Editable) mText, mFilters);
2331        }
2332    }
2333
2334    /**
2335     * @return the movement method being used for this TextView.
2336     * This will frequently be null for non-EditText TextViews.
2337     */
2338    public final MovementMethod getMovementMethod() {
2339        return mMovement;
2340    }
2341
2342    /**
2343     * Sets the movement method (arrow key handler) to be used for
2344     * this TextView.  This can be null to disallow using the arrow keys
2345     * to move the cursor or scroll the view.
2346     * <p>
2347     * Be warned that if you want a TextView with a key listener or movement
2348     * method not to be focusable, or if you want a TextView without a
2349     * key listener or movement method to be focusable, you must call
2350     * {@link #setFocusable} again after calling this to get the focusability
2351     * back the way you want it.
2352     */
2353    public final void setMovementMethod(MovementMethod movement) {
2354        if (mMovement != movement) {
2355            mMovement = movement;
2356
2357            if (movement != null && !(mText instanceof Spannable)) {
2358                setText(mText);
2359            }
2360
2361            fixFocusableAndClickableSettings();
2362
2363            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
2364            // mMovement
2365            if (mEditor != null) mEditor.prepareCursorControllers();
2366        }
2367    }
2368
2369    private void fixFocusableAndClickableSettings() {
2370        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
2371            setFocusable(FOCUSABLE);
2372            setClickable(true);
2373            setLongClickable(true);
2374        } else {
2375            setFocusable(FOCUSABLE_AUTO);
2376            setClickable(false);
2377            setLongClickable(false);
2378        }
2379    }
2380
2381    /**
2382     * @return the current transformation method for this TextView.
2383     * This will frequently be null except for single-line and password
2384     * fields.
2385     *
2386     * @attr ref android.R.styleable#TextView_password
2387     * @attr ref android.R.styleable#TextView_singleLine
2388     */
2389    public final TransformationMethod getTransformationMethod() {
2390        return mTransformation;
2391    }
2392
2393    /**
2394     * Sets the transformation that is applied to the text that this
2395     * TextView is displaying.
2396     *
2397     * @attr ref android.R.styleable#TextView_password
2398     * @attr ref android.R.styleable#TextView_singleLine
2399     */
2400    public final void setTransformationMethod(TransformationMethod method) {
2401        if (method == mTransformation) {
2402            // Avoid the setText() below if the transformation is
2403            // the same.
2404            return;
2405        }
2406        if (mTransformation != null) {
2407            if (mText instanceof Spannable) {
2408                ((Spannable) mText).removeSpan(mTransformation);
2409            }
2410        }
2411
2412        mTransformation = method;
2413
2414        if (method instanceof TransformationMethod2) {
2415            TransformationMethod2 method2 = (TransformationMethod2) method;
2416            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
2417            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
2418        } else {
2419            mAllowTransformationLengthChange = false;
2420        }
2421
2422        setText(mText);
2423
2424        if (hasPasswordTransformationMethod()) {
2425            notifyViewAccessibilityStateChangedIfNeeded(
2426                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
2427        }
2428
2429        // PasswordTransformationMethod always have LTR text direction heuristics returned by
2430        // getTextDirectionHeuristic, needs reset
2431        mTextDir = getTextDirectionHeuristic();
2432    }
2433
2434    /**
2435     * Returns the top padding of the view, plus space for the top
2436     * Drawable if any.
2437     */
2438    public int getCompoundPaddingTop() {
2439        final Drawables dr = mDrawables;
2440        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
2441            return mPaddingTop;
2442        } else {
2443            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
2444        }
2445    }
2446
2447    /**
2448     * Returns the bottom padding of the view, plus space for the bottom
2449     * Drawable if any.
2450     */
2451    public int getCompoundPaddingBottom() {
2452        final Drawables dr = mDrawables;
2453        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
2454            return mPaddingBottom;
2455        } else {
2456            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
2457        }
2458    }
2459
2460    /**
2461     * Returns the left padding of the view, plus space for the left
2462     * Drawable if any.
2463     */
2464    public int getCompoundPaddingLeft() {
2465        final Drawables dr = mDrawables;
2466        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
2467            return mPaddingLeft;
2468        } else {
2469            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
2470        }
2471    }
2472
2473    /**
2474     * Returns the right padding of the view, plus space for the right
2475     * Drawable if any.
2476     */
2477    public int getCompoundPaddingRight() {
2478        final Drawables dr = mDrawables;
2479        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
2480            return mPaddingRight;
2481        } else {
2482            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
2483        }
2484    }
2485
2486    /**
2487     * Returns the start padding of the view, plus space for the start
2488     * Drawable if any.
2489     */
2490    public int getCompoundPaddingStart() {
2491        resolveDrawables();
2492        switch(getLayoutDirection()) {
2493            default:
2494            case LAYOUT_DIRECTION_LTR:
2495                return getCompoundPaddingLeft();
2496            case LAYOUT_DIRECTION_RTL:
2497                return getCompoundPaddingRight();
2498        }
2499    }
2500
2501    /**
2502     * Returns the end padding of the view, plus space for the end
2503     * Drawable if any.
2504     */
2505    public int getCompoundPaddingEnd() {
2506        resolveDrawables();
2507        switch(getLayoutDirection()) {
2508            default:
2509            case LAYOUT_DIRECTION_LTR:
2510                return getCompoundPaddingRight();
2511            case LAYOUT_DIRECTION_RTL:
2512                return getCompoundPaddingLeft();
2513        }
2514    }
2515
2516    /**
2517     * Returns the extended top padding of the view, including both the
2518     * top Drawable if any and any extra space to keep more than maxLines
2519     * of text from showing.  It is only valid to call this after measuring.
2520     */
2521    public int getExtendedPaddingTop() {
2522        if (mMaxMode != LINES) {
2523            return getCompoundPaddingTop();
2524        }
2525
2526        if (mLayout == null) {
2527            assumeLayout();
2528        }
2529
2530        if (mLayout.getLineCount() <= mMaximum) {
2531            return getCompoundPaddingTop();
2532        }
2533
2534        int top = getCompoundPaddingTop();
2535        int bottom = getCompoundPaddingBottom();
2536        int viewht = getHeight() - top - bottom;
2537        int layoutht = mLayout.getLineTop(mMaximum);
2538
2539        if (layoutht >= viewht) {
2540            return top;
2541        }
2542
2543        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2544        if (gravity == Gravity.TOP) {
2545            return top;
2546        } else if (gravity == Gravity.BOTTOM) {
2547            return top + viewht - layoutht;
2548        } else { // (gravity == Gravity.CENTER_VERTICAL)
2549            return top + (viewht - layoutht) / 2;
2550        }
2551    }
2552
2553    /**
2554     * Returns the extended bottom padding of the view, including both the
2555     * bottom Drawable if any and any extra space to keep more than maxLines
2556     * of text from showing.  It is only valid to call this after measuring.
2557     */
2558    public int getExtendedPaddingBottom() {
2559        if (mMaxMode != LINES) {
2560            return getCompoundPaddingBottom();
2561        }
2562
2563        if (mLayout == null) {
2564            assumeLayout();
2565        }
2566
2567        if (mLayout.getLineCount() <= mMaximum) {
2568            return getCompoundPaddingBottom();
2569        }
2570
2571        int top = getCompoundPaddingTop();
2572        int bottom = getCompoundPaddingBottom();
2573        int viewht = getHeight() - top - bottom;
2574        int layoutht = mLayout.getLineTop(mMaximum);
2575
2576        if (layoutht >= viewht) {
2577            return bottom;
2578        }
2579
2580        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2581        if (gravity == Gravity.TOP) {
2582            return bottom + viewht - layoutht;
2583        } else if (gravity == Gravity.BOTTOM) {
2584            return bottom;
2585        } else { // (gravity == Gravity.CENTER_VERTICAL)
2586            return bottom + (viewht - layoutht) / 2;
2587        }
2588    }
2589
2590    /**
2591     * Returns the total left padding of the view, including the left
2592     * Drawable if any.
2593     */
2594    public int getTotalPaddingLeft() {
2595        return getCompoundPaddingLeft();
2596    }
2597
2598    /**
2599     * Returns the total right padding of the view, including the right
2600     * Drawable if any.
2601     */
2602    public int getTotalPaddingRight() {
2603        return getCompoundPaddingRight();
2604    }
2605
2606    /**
2607     * Returns the total start padding of the view, including the start
2608     * Drawable if any.
2609     */
2610    public int getTotalPaddingStart() {
2611        return getCompoundPaddingStart();
2612    }
2613
2614    /**
2615     * Returns the total end padding of the view, including the end
2616     * Drawable if any.
2617     */
2618    public int getTotalPaddingEnd() {
2619        return getCompoundPaddingEnd();
2620    }
2621
2622    /**
2623     * Returns the total top padding of the view, including the top
2624     * Drawable if any, the extra space to keep more than maxLines
2625     * from showing, and the vertical offset for gravity, if any.
2626     */
2627    public int getTotalPaddingTop() {
2628        return getExtendedPaddingTop() + getVerticalOffset(true);
2629    }
2630
2631    /**
2632     * Returns the total bottom padding of the view, including the bottom
2633     * Drawable if any, the extra space to keep more than maxLines
2634     * from showing, and the vertical offset for gravity, if any.
2635     */
2636    public int getTotalPaddingBottom() {
2637        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2638    }
2639
2640    /**
2641     * Sets the Drawables (if any) to appear to the left of, above, to the
2642     * right of, and below the text. Use {@code null} if you do not want a
2643     * Drawable there. The Drawables must already have had
2644     * {@link Drawable#setBounds} called.
2645     * <p>
2646     * Calling this method will overwrite any Drawables previously set using
2647     * {@link #setCompoundDrawablesRelative} or related methods.
2648     *
2649     * @attr ref android.R.styleable#TextView_drawableLeft
2650     * @attr ref android.R.styleable#TextView_drawableTop
2651     * @attr ref android.R.styleable#TextView_drawableRight
2652     * @attr ref android.R.styleable#TextView_drawableBottom
2653     */
2654    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2655            @Nullable Drawable right, @Nullable Drawable bottom) {
2656        Drawables dr = mDrawables;
2657
2658        // We're switching to absolute, discard relative.
2659        if (dr != null) {
2660            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2661            dr.mDrawableStart = null;
2662            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2663            dr.mDrawableEnd = null;
2664            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2665            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2666        }
2667
2668        final boolean drawables = left != null || top != null || right != null || bottom != null;
2669        if (!drawables) {
2670            // Clearing drawables...  can we free the data structure?
2671            if (dr != null) {
2672                if (!dr.hasMetadata()) {
2673                    mDrawables = null;
2674                } else {
2675                    // We need to retain the last set padding, so just clear
2676                    // out all of the fields in the existing structure.
2677                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2678                        if (dr.mShowing[i] != null) {
2679                            dr.mShowing[i].setCallback(null);
2680                        }
2681                        dr.mShowing[i] = null;
2682                    }
2683                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2684                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2685                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2686                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2687                }
2688            }
2689        } else {
2690            if (dr == null) {
2691                mDrawables = dr = new Drawables(getContext());
2692            }
2693
2694            mDrawables.mOverride = false;
2695
2696            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2697                dr.mShowing[Drawables.LEFT].setCallback(null);
2698            }
2699            dr.mShowing[Drawables.LEFT] = left;
2700
2701            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2702                dr.mShowing[Drawables.TOP].setCallback(null);
2703            }
2704            dr.mShowing[Drawables.TOP] = top;
2705
2706            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2707                dr.mShowing[Drawables.RIGHT].setCallback(null);
2708            }
2709            dr.mShowing[Drawables.RIGHT] = right;
2710
2711            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2712                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2713            }
2714            dr.mShowing[Drawables.BOTTOM] = bottom;
2715
2716            final Rect compoundRect = dr.mCompoundRect;
2717            int[] state;
2718
2719            state = getDrawableState();
2720
2721            if (left != null) {
2722                left.setState(state);
2723                left.copyBounds(compoundRect);
2724                left.setCallback(this);
2725                dr.mDrawableSizeLeft = compoundRect.width();
2726                dr.mDrawableHeightLeft = compoundRect.height();
2727            } else {
2728                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2729            }
2730
2731            if (right != null) {
2732                right.setState(state);
2733                right.copyBounds(compoundRect);
2734                right.setCallback(this);
2735                dr.mDrawableSizeRight = compoundRect.width();
2736                dr.mDrawableHeightRight = compoundRect.height();
2737            } else {
2738                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2739            }
2740
2741            if (top != null) {
2742                top.setState(state);
2743                top.copyBounds(compoundRect);
2744                top.setCallback(this);
2745                dr.mDrawableSizeTop = compoundRect.height();
2746                dr.mDrawableWidthTop = compoundRect.width();
2747            } else {
2748                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2749            }
2750
2751            if (bottom != null) {
2752                bottom.setState(state);
2753                bottom.copyBounds(compoundRect);
2754                bottom.setCallback(this);
2755                dr.mDrawableSizeBottom = compoundRect.height();
2756                dr.mDrawableWidthBottom = compoundRect.width();
2757            } else {
2758                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2759            }
2760        }
2761
2762        // Save initial left/right drawables
2763        if (dr != null) {
2764            dr.mDrawableLeftInitial = left;
2765            dr.mDrawableRightInitial = right;
2766        }
2767
2768        resetResolvedDrawables();
2769        resolveDrawables();
2770        applyCompoundDrawableTint();
2771        invalidate();
2772        requestLayout();
2773    }
2774
2775    /**
2776     * Sets the Drawables (if any) to appear to the left of, above, to the
2777     * right of, and below the text. Use 0 if you do not want a Drawable there.
2778     * The Drawables' bounds will be set to their intrinsic bounds.
2779     * <p>
2780     * Calling this method will overwrite any Drawables previously set using
2781     * {@link #setCompoundDrawablesRelative} or related methods.
2782     *
2783     * @param left Resource identifier of the left Drawable.
2784     * @param top Resource identifier of the top Drawable.
2785     * @param right Resource identifier of the right Drawable.
2786     * @param bottom Resource identifier of the bottom Drawable.
2787     *
2788     * @attr ref android.R.styleable#TextView_drawableLeft
2789     * @attr ref android.R.styleable#TextView_drawableTop
2790     * @attr ref android.R.styleable#TextView_drawableRight
2791     * @attr ref android.R.styleable#TextView_drawableBottom
2792     */
2793    @android.view.RemotableViewMethod
2794    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2795            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2796        final Context context = getContext();
2797        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2798                top != 0 ? context.getDrawable(top) : null,
2799                right != 0 ? context.getDrawable(right) : null,
2800                bottom != 0 ? context.getDrawable(bottom) : null);
2801    }
2802
2803    /**
2804     * Sets the Drawables (if any) to appear to the left of, above, to the
2805     * right of, and below the text. Use {@code null} if you do not want a
2806     * Drawable there. The Drawables' bounds will be set to their intrinsic
2807     * bounds.
2808     * <p>
2809     * Calling this method will overwrite any Drawables previously set using
2810     * {@link #setCompoundDrawablesRelative} or related methods.
2811     *
2812     * @attr ref android.R.styleable#TextView_drawableLeft
2813     * @attr ref android.R.styleable#TextView_drawableTop
2814     * @attr ref android.R.styleable#TextView_drawableRight
2815     * @attr ref android.R.styleable#TextView_drawableBottom
2816     */
2817    @android.view.RemotableViewMethod
2818    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2819            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2820
2821        if (left != null) {
2822            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2823        }
2824        if (right != null) {
2825            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2826        }
2827        if (top != null) {
2828            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2829        }
2830        if (bottom != null) {
2831            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2832        }
2833        setCompoundDrawables(left, top, right, bottom);
2834    }
2835
2836    /**
2837     * Sets the Drawables (if any) to appear to the start of, above, to the end
2838     * of, and below the text. Use {@code null} if you do not want a Drawable
2839     * there. The Drawables must already have had {@link Drawable#setBounds}
2840     * called.
2841     * <p>
2842     * Calling this method will overwrite any Drawables previously set using
2843     * {@link #setCompoundDrawables} or related methods.
2844     *
2845     * @attr ref android.R.styleable#TextView_drawableStart
2846     * @attr ref android.R.styleable#TextView_drawableTop
2847     * @attr ref android.R.styleable#TextView_drawableEnd
2848     * @attr ref android.R.styleable#TextView_drawableBottom
2849     */
2850    @android.view.RemotableViewMethod
2851    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2852            @Nullable Drawable end, @Nullable Drawable bottom) {
2853        Drawables dr = mDrawables;
2854
2855        // We're switching to relative, discard absolute.
2856        if (dr != null) {
2857            if (dr.mShowing[Drawables.LEFT] != null) {
2858                dr.mShowing[Drawables.LEFT].setCallback(null);
2859            }
2860            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2861            if (dr.mShowing[Drawables.RIGHT] != null) {
2862                dr.mShowing[Drawables.RIGHT].setCallback(null);
2863            }
2864            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2865            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2866            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2867        }
2868
2869        final boolean drawables = start != null || top != null
2870                || end != null || bottom != null;
2871
2872        if (!drawables) {
2873            // Clearing drawables...  can we free the data structure?
2874            if (dr != null) {
2875                if (!dr.hasMetadata()) {
2876                    mDrawables = null;
2877                } else {
2878                    // We need to retain the last set padding, so just clear
2879                    // out all of the fields in the existing structure.
2880                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2881                    dr.mDrawableStart = null;
2882                    if (dr.mShowing[Drawables.TOP] != null) {
2883                        dr.mShowing[Drawables.TOP].setCallback(null);
2884                    }
2885                    dr.mShowing[Drawables.TOP] = null;
2886                    if (dr.mDrawableEnd != null) {
2887                        dr.mDrawableEnd.setCallback(null);
2888                    }
2889                    dr.mDrawableEnd = null;
2890                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2891                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2892                    }
2893                    dr.mShowing[Drawables.BOTTOM] = null;
2894                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2895                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2896                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2897                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2898                }
2899            }
2900        } else {
2901            if (dr == null) {
2902                mDrawables = dr = new Drawables(getContext());
2903            }
2904
2905            mDrawables.mOverride = true;
2906
2907            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2908                dr.mDrawableStart.setCallback(null);
2909            }
2910            dr.mDrawableStart = start;
2911
2912            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2913                dr.mShowing[Drawables.TOP].setCallback(null);
2914            }
2915            dr.mShowing[Drawables.TOP] = top;
2916
2917            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2918                dr.mDrawableEnd.setCallback(null);
2919            }
2920            dr.mDrawableEnd = end;
2921
2922            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2923                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2924            }
2925            dr.mShowing[Drawables.BOTTOM] = bottom;
2926
2927            final Rect compoundRect = dr.mCompoundRect;
2928            int[] state;
2929
2930            state = getDrawableState();
2931
2932            if (start != null) {
2933                start.setState(state);
2934                start.copyBounds(compoundRect);
2935                start.setCallback(this);
2936                dr.mDrawableSizeStart = compoundRect.width();
2937                dr.mDrawableHeightStart = compoundRect.height();
2938            } else {
2939                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2940            }
2941
2942            if (end != null) {
2943                end.setState(state);
2944                end.copyBounds(compoundRect);
2945                end.setCallback(this);
2946                dr.mDrawableSizeEnd = compoundRect.width();
2947                dr.mDrawableHeightEnd = compoundRect.height();
2948            } else {
2949                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2950            }
2951
2952            if (top != null) {
2953                top.setState(state);
2954                top.copyBounds(compoundRect);
2955                top.setCallback(this);
2956                dr.mDrawableSizeTop = compoundRect.height();
2957                dr.mDrawableWidthTop = compoundRect.width();
2958            } else {
2959                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2960            }
2961
2962            if (bottom != null) {
2963                bottom.setState(state);
2964                bottom.copyBounds(compoundRect);
2965                bottom.setCallback(this);
2966                dr.mDrawableSizeBottom = compoundRect.height();
2967                dr.mDrawableWidthBottom = compoundRect.width();
2968            } else {
2969                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2970            }
2971        }
2972
2973        resetResolvedDrawables();
2974        resolveDrawables();
2975        invalidate();
2976        requestLayout();
2977    }
2978
2979    /**
2980     * Sets the Drawables (if any) to appear to the start of, above, to the end
2981     * of, and below the text. Use 0 if you do not want a Drawable there. The
2982     * Drawables' bounds will be set to their intrinsic bounds.
2983     * <p>
2984     * Calling this method will overwrite any Drawables previously set using
2985     * {@link #setCompoundDrawables} or related methods.
2986     *
2987     * @param start Resource identifier of the start Drawable.
2988     * @param top Resource identifier of the top Drawable.
2989     * @param end Resource identifier of the end Drawable.
2990     * @param bottom Resource identifier of the bottom Drawable.
2991     *
2992     * @attr ref android.R.styleable#TextView_drawableStart
2993     * @attr ref android.R.styleable#TextView_drawableTop
2994     * @attr ref android.R.styleable#TextView_drawableEnd
2995     * @attr ref android.R.styleable#TextView_drawableBottom
2996     */
2997    @android.view.RemotableViewMethod
2998    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2999            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
3000        final Context context = getContext();
3001        setCompoundDrawablesRelativeWithIntrinsicBounds(
3002                start != 0 ? context.getDrawable(start) : null,
3003                top != 0 ? context.getDrawable(top) : null,
3004                end != 0 ? context.getDrawable(end) : null,
3005                bottom != 0 ? context.getDrawable(bottom) : null);
3006    }
3007
3008    /**
3009     * Sets the Drawables (if any) to appear to the start of, above, to the end
3010     * of, and below the text. Use {@code null} if you do not want a Drawable
3011     * there. The Drawables' bounds will be set to their intrinsic bounds.
3012     * <p>
3013     * Calling this method will overwrite any Drawables previously set using
3014     * {@link #setCompoundDrawables} or related methods.
3015     *
3016     * @attr ref android.R.styleable#TextView_drawableStart
3017     * @attr ref android.R.styleable#TextView_drawableTop
3018     * @attr ref android.R.styleable#TextView_drawableEnd
3019     * @attr ref android.R.styleable#TextView_drawableBottom
3020     */
3021    @android.view.RemotableViewMethod
3022    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
3023            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
3024
3025        if (start != null) {
3026            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
3027        }
3028        if (end != null) {
3029            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
3030        }
3031        if (top != null) {
3032            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
3033        }
3034        if (bottom != null) {
3035            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
3036        }
3037        setCompoundDrawablesRelative(start, top, end, bottom);
3038    }
3039
3040    /**
3041     * Returns drawables for the left, top, right, and bottom borders.
3042     *
3043     * @attr ref android.R.styleable#TextView_drawableLeft
3044     * @attr ref android.R.styleable#TextView_drawableTop
3045     * @attr ref android.R.styleable#TextView_drawableRight
3046     * @attr ref android.R.styleable#TextView_drawableBottom
3047     */
3048    @NonNull
3049    public Drawable[] getCompoundDrawables() {
3050        final Drawables dr = mDrawables;
3051        if (dr != null) {
3052            return dr.mShowing.clone();
3053        } else {
3054            return new Drawable[] { null, null, null, null };
3055        }
3056    }
3057
3058    /**
3059     * Returns drawables for the start, top, end, and bottom borders.
3060     *
3061     * @attr ref android.R.styleable#TextView_drawableStart
3062     * @attr ref android.R.styleable#TextView_drawableTop
3063     * @attr ref android.R.styleable#TextView_drawableEnd
3064     * @attr ref android.R.styleable#TextView_drawableBottom
3065     */
3066    @NonNull
3067    public Drawable[] getCompoundDrawablesRelative() {
3068        final Drawables dr = mDrawables;
3069        if (dr != null) {
3070            return new Drawable[] {
3071                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
3072                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
3073            };
3074        } else {
3075            return new Drawable[] { null, null, null, null };
3076        }
3077    }
3078
3079    /**
3080     * Sets the size of the padding between the compound drawables and
3081     * the text.
3082     *
3083     * @attr ref android.R.styleable#TextView_drawablePadding
3084     */
3085    @android.view.RemotableViewMethod
3086    public void setCompoundDrawablePadding(int pad) {
3087        Drawables dr = mDrawables;
3088        if (pad == 0) {
3089            if (dr != null) {
3090                dr.mDrawablePadding = pad;
3091            }
3092        } else {
3093            if (dr == null) {
3094                mDrawables = dr = new Drawables(getContext());
3095            }
3096            dr.mDrawablePadding = pad;
3097        }
3098
3099        invalidate();
3100        requestLayout();
3101    }
3102
3103    /**
3104     * Returns the padding between the compound drawables and the text.
3105     *
3106     * @attr ref android.R.styleable#TextView_drawablePadding
3107     */
3108    public int getCompoundDrawablePadding() {
3109        final Drawables dr = mDrawables;
3110        return dr != null ? dr.mDrawablePadding : 0;
3111    }
3112
3113    /**
3114     * Applies a tint to the compound drawables. Does not modify the
3115     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
3116     * <p>
3117     * Subsequent calls to
3118     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
3119     * and related methods will automatically mutate the drawables and apply
3120     * the specified tint and tint mode using
3121     * {@link Drawable#setTintList(ColorStateList)}.
3122     *
3123     * @param tint the tint to apply, may be {@code null} to clear tint
3124     *
3125     * @attr ref android.R.styleable#TextView_drawableTint
3126     * @see #getCompoundDrawableTintList()
3127     * @see Drawable#setTintList(ColorStateList)
3128     */
3129    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
3130        if (mDrawables == null) {
3131            mDrawables = new Drawables(getContext());
3132        }
3133        mDrawables.mTintList = tint;
3134        mDrawables.mHasTint = true;
3135
3136        applyCompoundDrawableTint();
3137    }
3138
3139    /**
3140     * @return the tint applied to the compound drawables
3141     * @attr ref android.R.styleable#TextView_drawableTint
3142     * @see #setCompoundDrawableTintList(ColorStateList)
3143     */
3144    public ColorStateList getCompoundDrawableTintList() {
3145        return mDrawables != null ? mDrawables.mTintList : null;
3146    }
3147
3148    /**
3149     * Specifies the blending mode used to apply the tint specified by
3150     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
3151     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
3152     *
3153     * @param tintMode the blending mode used to apply the tint, may be
3154     *                 {@code null} to clear tint
3155     * @attr ref android.R.styleable#TextView_drawableTintMode
3156     * @see #setCompoundDrawableTintList(ColorStateList)
3157     * @see Drawable#setTintMode(PorterDuff.Mode)
3158     */
3159    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
3160        if (mDrawables == null) {
3161            mDrawables = new Drawables(getContext());
3162        }
3163        mDrawables.mTintMode = tintMode;
3164        mDrawables.mHasTintMode = true;
3165
3166        applyCompoundDrawableTint();
3167    }
3168
3169    /**
3170     * Returns the blending mode used to apply the tint to the compound
3171     * drawables, if specified.
3172     *
3173     * @return the blending mode used to apply the tint to the compound
3174     *         drawables
3175     * @attr ref android.R.styleable#TextView_drawableTintMode
3176     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
3177     */
3178    public PorterDuff.Mode getCompoundDrawableTintMode() {
3179        return mDrawables != null ? mDrawables.mTintMode : null;
3180    }
3181
3182    private void applyCompoundDrawableTint() {
3183        if (mDrawables == null) {
3184            return;
3185        }
3186
3187        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
3188            final ColorStateList tintList = mDrawables.mTintList;
3189            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
3190            final boolean hasTint = mDrawables.mHasTint;
3191            final boolean hasTintMode = mDrawables.mHasTintMode;
3192            final int[] state = getDrawableState();
3193
3194            for (Drawable dr : mDrawables.mShowing) {
3195                if (dr == null) {
3196                    continue;
3197                }
3198
3199                if (dr == mDrawables.mDrawableError) {
3200                    // From a developer's perspective, the error drawable isn't
3201                    // a compound drawable. Don't apply the generic compound
3202                    // drawable tint to it.
3203                    continue;
3204                }
3205
3206                dr.mutate();
3207
3208                if (hasTint) {
3209                    dr.setTintList(tintList);
3210                }
3211
3212                if (hasTintMode) {
3213                    dr.setTintMode(tintMode);
3214                }
3215
3216                // The drawable (or one of its children) may not have been
3217                // stateful before applying the tint, so let's try again.
3218                if (dr.isStateful()) {
3219                    dr.setState(state);
3220                }
3221            }
3222        }
3223    }
3224
3225    @Override
3226    public void setPadding(int left, int top, int right, int bottom) {
3227        if (left != mPaddingLeft
3228                || right != mPaddingRight
3229                || top != mPaddingTop
3230                ||  bottom != mPaddingBottom) {
3231            nullLayouts();
3232        }
3233
3234        // the super call will requestLayout()
3235        super.setPadding(left, top, right, bottom);
3236        invalidate();
3237    }
3238
3239    @Override
3240    public void setPaddingRelative(int start, int top, int end, int bottom) {
3241        if (start != getPaddingStart()
3242                || end != getPaddingEnd()
3243                || top != mPaddingTop
3244                || bottom != mPaddingBottom) {
3245            nullLayouts();
3246        }
3247
3248        // the super call will requestLayout()
3249        super.setPaddingRelative(start, top, end, bottom);
3250        invalidate();
3251    }
3252
3253    /**
3254     * Gets the autolink mask of the text.  See {@link
3255     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3256     * possible values.
3257     *
3258     * @attr ref android.R.styleable#TextView_autoLink
3259     */
3260    public final int getAutoLinkMask() {
3261        return mAutoLinkMask;
3262    }
3263
3264    /**
3265     * Sets the text appearance from the specified style resource.
3266     * <p>
3267     * Use a framework-defined {@code TextAppearance} style like
3268     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
3269     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
3270     * set of attributes that can be used in a custom style.
3271     *
3272     * @param resId the resource identifier of the style to apply
3273     * @attr ref android.R.styleable#TextView_textAppearance
3274     */
3275    @SuppressWarnings("deprecation")
3276    public void setTextAppearance(@StyleRes int resId) {
3277        setTextAppearance(mContext, resId);
3278    }
3279
3280    /**
3281     * Sets the text color, size, style, hint color, and highlight color
3282     * from the specified TextAppearance resource.
3283     *
3284     * @deprecated Use {@link #setTextAppearance(int)} instead.
3285     */
3286    @Deprecated
3287    public void setTextAppearance(Context context, @StyleRes int resId) {
3288        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
3289
3290        final int textColorHighlight = ta.getColor(
3291                R.styleable.TextAppearance_textColorHighlight, 0);
3292        if (textColorHighlight != 0) {
3293            setHighlightColor(textColorHighlight);
3294        }
3295
3296        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
3297        if (textColor != null) {
3298            setTextColor(textColor);
3299        }
3300
3301        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
3302        if (textSize != 0) {
3303            setRawTextSize(textSize);
3304        }
3305
3306        final ColorStateList textColorHint = ta.getColorStateList(
3307                R.styleable.TextAppearance_textColorHint);
3308        if (textColorHint != null) {
3309            setHintTextColor(textColorHint);
3310        }
3311
3312        final ColorStateList textColorLink = ta.getColorStateList(
3313                R.styleable.TextAppearance_textColorLink);
3314        if (textColorLink != null) {
3315            setLinkTextColor(textColorLink);
3316        }
3317
3318        Typeface fontTypeface = null;
3319        String fontFamily = null;
3320        try {
3321            fontTypeface = ta.getFont(R.styleable.TextAppearance_fontFamily);
3322        } catch (UnsupportedOperationException e) {
3323            // Expected if it is not a font resource.
3324        }
3325        if (fontTypeface == null) {
3326            fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
3327        }
3328        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
3329        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
3330        setTypefaceFromAttrs(fontTypeface, fontFamily, typefaceIndex, styleIndex);
3331
3332        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
3333        if (shadowColor != 0) {
3334            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
3335            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
3336            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
3337            setShadowLayer(r, dx, dy, shadowColor);
3338        }
3339
3340        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
3341            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
3342        }
3343
3344        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
3345            setElegantTextHeight(ta.getBoolean(
3346                    R.styleable.TextAppearance_elegantTextHeight, false));
3347        }
3348
3349        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
3350            setLetterSpacing(ta.getFloat(
3351                    R.styleable.TextAppearance_letterSpacing, 0));
3352        }
3353
3354        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
3355            setFontFeatureSettings(ta.getString(
3356                    R.styleable.TextAppearance_fontFeatureSettings));
3357        }
3358
3359        ta.recycle();
3360    }
3361
3362    /**
3363     * Get the default primary {@link Locale} of the text in this TextView. This will always be
3364     * the first member of {@link #getTextLocales()}.
3365     * @return the default primary {@link Locale} of the text in this TextView.
3366     */
3367    @NonNull
3368    public Locale getTextLocale() {
3369        return mTextPaint.getTextLocale();
3370    }
3371
3372    /**
3373     * Get the default {@link LocaleList} of the text in this TextView.
3374     * @return the default {@link LocaleList} of the text in this TextView.
3375     */
3376    @NonNull @Size(min = 1)
3377    public LocaleList getTextLocales() {
3378        return mTextPaint.getTextLocales();
3379    }
3380
3381    /**
3382     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
3383     * containing just the given value.
3384     *
3385     * @param locale the {@link Locale} for drawing text, must not be null.
3386     *
3387     * @see #setTextLocales
3388     */
3389    public void setTextLocale(@NonNull Locale locale) {
3390        mLocalesChanged = true;
3391        mTextPaint.setTextLocale(locale);
3392        if (mLayout != null) {
3393            nullLayouts();
3394            requestLayout();
3395            invalidate();
3396        }
3397    }
3398
3399    /**
3400     * Set the default {@link LocaleList} of the text in this TextView to the given value.
3401     *
3402     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
3403     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
3404     * other aspects of text display, including line breaking.
3405     *
3406     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
3407     *
3408     * @see Paint#setTextLocales
3409     */
3410    public void setTextLocales(@NonNull @Size(min = 1) LocaleList locales) {
3411        mLocalesChanged = true;
3412        mTextPaint.setTextLocales(locales);
3413        if (mLayout != null) {
3414            nullLayouts();
3415            requestLayout();
3416            invalidate();
3417        }
3418    }
3419
3420    @Override
3421    protected void onConfigurationChanged(Configuration newConfig) {
3422        super.onConfigurationChanged(newConfig);
3423        if (!mLocalesChanged) {
3424            mTextPaint.setTextLocales(LocaleList.getDefault());
3425            if (mLayout != null) {
3426                nullLayouts();
3427                requestLayout();
3428                invalidate();
3429            }
3430        }
3431    }
3432
3433    /**
3434     * @return the size (in pixels) of the default text size in this TextView.
3435     */
3436    @ViewDebug.ExportedProperty(category = "text")
3437    public float getTextSize() {
3438        return mTextPaint.getTextSize();
3439    }
3440
3441    /**
3442     * @return the size (in scaled pixels) of thee default text size in this TextView.
3443     * @hide
3444     */
3445    @ViewDebug.ExportedProperty(category = "text")
3446    public float getScaledTextSize() {
3447        return mTextPaint.getTextSize() / mTextPaint.density;
3448    }
3449
3450    /** @hide */
3451    @ViewDebug.ExportedProperty(category = "text", mapping = {
3452            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
3453            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
3454            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
3455            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
3456    })
3457    public int getTypefaceStyle() {
3458        Typeface typeface = mTextPaint.getTypeface();
3459        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
3460    }
3461
3462    /**
3463     * Set the default text size to the given value, interpreted as "scaled
3464     * pixel" units.  This size is adjusted based on the current density and
3465     * user font size preference.
3466     *
3467     * <p>Note: if this TextView has the auto-size feature enabled than this function is no-op.
3468     *
3469     * @param size The scaled pixel size.
3470     *
3471     * @attr ref android.R.styleable#TextView_textSize
3472     */
3473    @android.view.RemotableViewMethod
3474    public void setTextSize(float size) {
3475        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
3476    }
3477
3478    /**
3479     * Set the default text size to a given unit and value. See {@link
3480     * TypedValue} for the possible dimension units.
3481     *
3482     * <p>Note: if this TextView has the auto-size feature enabled than this function is no-op.
3483     *
3484     * @param unit The desired dimension unit.
3485     * @param size The desired size in the given units.
3486     *
3487     * @attr ref android.R.styleable#TextView_textSize
3488     */
3489    public void setTextSize(int unit, float size) {
3490        if (!isAutoSizeEnabled()) {
3491            setTextSizeInternal(unit, size);
3492        }
3493    }
3494
3495    private void setTextSizeInternal(int unit, float size) {
3496        Context c = getContext();
3497        Resources r;
3498
3499        if (c == null) {
3500            r = Resources.getSystem();
3501        } else {
3502            r = c.getResources();
3503        }
3504
3505        setRawTextSize(TypedValue.applyDimension(
3506                unit, size, r.getDisplayMetrics()));
3507    }
3508
3509    private void setRawTextSize(float size) {
3510        if (size != mTextPaint.getTextSize()) {
3511            mTextPaint.setTextSize(size);
3512
3513            if (mLayout != null) {
3514                // Do not auto-size right after setting the text size.
3515                mNeedsAutoSizeText = false;
3516                nullLayouts();
3517                requestLayout();
3518                invalidate();
3519            }
3520        }
3521    }
3522
3523    /**
3524     * @return the extent by which text is currently being stretched
3525     * horizontally.  This will usually be 1.
3526     */
3527    public float getTextScaleX() {
3528        return mTextPaint.getTextScaleX();
3529    }
3530
3531    /**
3532     * Sets the extent by which text should be stretched horizontally.
3533     *
3534     * @attr ref android.R.styleable#TextView_textScaleX
3535     */
3536    @android.view.RemotableViewMethod
3537    public void setTextScaleX(float size) {
3538        if (size != mTextPaint.getTextScaleX()) {
3539            mUserSetTextScaleX = true;
3540            mTextPaint.setTextScaleX(size);
3541
3542            if (mLayout != null) {
3543                nullLayouts();
3544                requestLayout();
3545                invalidate();
3546            }
3547        }
3548    }
3549
3550    /**
3551     * Sets the typeface and style in which the text should be displayed.
3552     * Note that not all Typeface families actually have bold and italic
3553     * variants, so you may need to use
3554     * {@link #setTypeface(Typeface, int)} to get the appearance
3555     * that you actually want.
3556     *
3557     * @see #getTypeface()
3558     *
3559     * @attr ref android.R.styleable#TextView_fontFamily
3560     * @attr ref android.R.styleable#TextView_typeface
3561     * @attr ref android.R.styleable#TextView_textStyle
3562     */
3563    public void setTypeface(Typeface tf) {
3564        if (mTextPaint.getTypeface() != tf) {
3565            mTextPaint.setTypeface(tf);
3566
3567            if (mLayout != null) {
3568                nullLayouts();
3569                requestLayout();
3570                invalidate();
3571            }
3572        }
3573    }
3574
3575    /**
3576     * @return the current typeface and style in which the text is being
3577     * displayed.
3578     *
3579     * @see #setTypeface(Typeface)
3580     *
3581     * @attr ref android.R.styleable#TextView_fontFamily
3582     * @attr ref android.R.styleable#TextView_typeface
3583     * @attr ref android.R.styleable#TextView_textStyle
3584     */
3585    public Typeface getTypeface() {
3586        return mTextPaint.getTypeface();
3587    }
3588
3589    /**
3590     * Set the TextView's elegant height metrics flag. This setting selects font
3591     * variants that have not been compacted to fit Latin-based vertical
3592     * metrics, and also increases top and bottom bounds to provide more space.
3593     *
3594     * @param elegant set the paint's elegant metrics flag.
3595     *
3596     * @attr ref android.R.styleable#TextView_elegantTextHeight
3597     */
3598    public void setElegantTextHeight(boolean elegant) {
3599        if (elegant != mTextPaint.isElegantTextHeight()) {
3600            mTextPaint.setElegantTextHeight(elegant);
3601            if (mLayout != null) {
3602                nullLayouts();
3603                requestLayout();
3604                invalidate();
3605            }
3606        }
3607    }
3608
3609    /**
3610     * @return the extent by which text is currently being letter-spaced.
3611     * This will normally be 0.
3612     *
3613     * @see #setLetterSpacing(float)
3614     * @see Paint#setLetterSpacing
3615     */
3616    public float getLetterSpacing() {
3617        return mTextPaint.getLetterSpacing();
3618    }
3619
3620    /**
3621     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3622     * for slight expansion will be around 0.05.  Negative values tighten text.
3623     *
3624     * @see #getLetterSpacing()
3625     * @see Paint#getLetterSpacing
3626     *
3627     * @attr ref android.R.styleable#TextView_letterSpacing
3628     */
3629    @android.view.RemotableViewMethod
3630    public void setLetterSpacing(float letterSpacing) {
3631        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3632            mTextPaint.setLetterSpacing(letterSpacing);
3633
3634            if (mLayout != null) {
3635                nullLayouts();
3636                requestLayout();
3637                invalidate();
3638            }
3639        }
3640    }
3641
3642    /**
3643     * Returns the font feature settings. The format is the same as the CSS
3644     * font-feature-settings attribute:
3645     * <a href="https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop">
3646     *     https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop</a>
3647     *
3648     * @return the currently set font feature settings.  Default is null.
3649     *
3650     * @see #setFontFeatureSettings(String)
3651     * @see Paint#setFontFeatureSettings(String) Paint.setFontFeatureSettings(String)
3652     */
3653    @Nullable
3654    public String getFontFeatureSettings() {
3655        return mTextPaint.getFontFeatureSettings();
3656    }
3657
3658    /**
3659     * Returns the font variation settings.
3660     *
3661     * @return the currently set font variation settings.  Returns null if no variation is
3662     * specified.
3663     *
3664     * @see #setFontVariationSettings(String)
3665     * @see Paint#setFontVariationSettings(String) Paint.setFontVariationSettings(String)
3666     */
3667    @Nullable
3668    public String getFontVariationSettings() {
3669        return mTextPaint.getFontVariationSettings();
3670    }
3671
3672    /**
3673     * Sets the break strategy for breaking paragraphs into lines. The default value for
3674     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3675     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3676     * text "dancing" when being edited.
3677     *
3678     * @attr ref android.R.styleable#TextView_breakStrategy
3679     * @see #getBreakStrategy()
3680     */
3681    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3682        mBreakStrategy = breakStrategy;
3683        if (mLayout != null) {
3684            nullLayouts();
3685            requestLayout();
3686            invalidate();
3687        }
3688    }
3689
3690    /**
3691     * @return the currently set break strategy.
3692     *
3693     * @attr ref android.R.styleable#TextView_breakStrategy
3694     * @see #setBreakStrategy(int)
3695     */
3696    @Layout.BreakStrategy
3697    public int getBreakStrategy() {
3698        return mBreakStrategy;
3699    }
3700
3701    /**
3702     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is
3703     * set from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3704     *
3705     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3706     * @see #getHyphenationFrequency()
3707     */
3708    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3709        mHyphenationFrequency = hyphenationFrequency;
3710        if (mLayout != null) {
3711            nullLayouts();
3712            requestLayout();
3713            invalidate();
3714        }
3715    }
3716
3717    /**
3718     * @return the currently set hyphenation frequency.
3719     *
3720     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3721     * @see #setHyphenationFrequency(int)
3722     */
3723    @Layout.HyphenationFrequency
3724    public int getHyphenationFrequency() {
3725        return mHyphenationFrequency;
3726    }
3727
3728    /**
3729     * Enables or disables full justification. The default value is false.
3730     *
3731     * @see #getJustify()
3732     */
3733    public void setJustify(boolean justify) {
3734        mJustify = justify;
3735        if (mLayout != null) {
3736            nullLayouts();
3737            requestLayout();
3738            invalidate();
3739        }
3740    }
3741
3742    /**
3743     * @return true if currently paragraph justification is enabled.
3744     *
3745     * @see #setJustify(boolean)
3746     */
3747    public boolean getJustify() {
3748        return mJustify;
3749    }
3750
3751    /**
3752     * Sets font feature settings. The format is the same as the CSS
3753     * font-feature-settings attribute:
3754     * <a href="https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop">
3755     *     https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop</a>
3756     *
3757     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3758     *
3759     * @see #getFontFeatureSettings()
3760     * @see Paint#getFontFeatureSettings() Paint.getFontFeatureSettings()
3761     *
3762     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3763     */
3764    @android.view.RemotableViewMethod
3765    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3766        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3767            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3768
3769            if (mLayout != null) {
3770                nullLayouts();
3771                requestLayout();
3772                invalidate();
3773            }
3774        }
3775    }
3776
3777
3778    /**
3779     * Sets TrueType or OpenType font variation settings. The settings string is constructed from
3780     * multiple pairs of axis tag and style values. The axis tag must contain four ASCII characters
3781     * and must be wrapped with single quotes (U+0027) or double quotes (U+0022). Axis strings that
3782     * are longer or shorter than four characters, or contain characters outside of U+0020..U+007E
3783     * are invalid. If a specified axis name is not defined in the font, the settings will be
3784     * ignored.
3785     *
3786     * <pre>
3787     *   textView.setFontVariationSettings("'wdth' 1.0");
3788     *   textView.setFontVariationSettings("'AX  ' 1.8, 'FB  ' 2.0");
3789     * </pre>
3790     *
3791     * @param fontVariationSettings font variation settings. You can pass null or empty string as
3792     *                              no variation settings.
3793     *
3794     * @see #getFontVariationSettings()
3795     * @see Paint#getFontVariationSettings() Paint.getFontVariationSettings()
3796     */
3797    public void setFontVariationSettings(@Nullable String fontVariationSettings) {
3798        final String existingSettings = mTextPaint.getFontVariationSettings();
3799        if (fontVariationSettings == existingSettings
3800                || (fontVariationSettings != null
3801                        && fontVariationSettings.equals(existingSettings))) {
3802            return;
3803        }
3804        mTextPaint.setFontVariationSettings(fontVariationSettings);
3805
3806        if (mLayout != null) {
3807            nullLayouts();
3808            requestLayout();
3809            invalidate();
3810        }
3811    }
3812
3813    /**
3814     * Sets the text color for all the states (normal, selected,
3815     * focused) to be this color.
3816     *
3817     * @param color A color value in the form 0xAARRGGBB.
3818     * Do not pass a resource ID. To get a color value from a resource ID, call
3819     * {@link android.support.v4.content.ContextCompat#getColor(Context, int) getColor}.
3820     *
3821     * @see #setTextColor(ColorStateList)
3822     * @see #getTextColors()
3823     *
3824     * @attr ref android.R.styleable#TextView_textColor
3825     */
3826    @android.view.RemotableViewMethod
3827    public void setTextColor(@ColorInt int color) {
3828        mTextColor = ColorStateList.valueOf(color);
3829        updateTextColors();
3830    }
3831
3832    /**
3833     * Sets the text color.
3834     *
3835     * @see #setTextColor(int)
3836     * @see #getTextColors()
3837     * @see #setHintTextColor(ColorStateList)
3838     * @see #setLinkTextColor(ColorStateList)
3839     *
3840     * @attr ref android.R.styleable#TextView_textColor
3841     */
3842    @android.view.RemotableViewMethod
3843    public void setTextColor(ColorStateList colors) {
3844        if (colors == null) {
3845            throw new NullPointerException();
3846        }
3847
3848        mTextColor = colors;
3849        updateTextColors();
3850    }
3851
3852    /**
3853     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3854     *
3855     * @see #setTextColor(ColorStateList)
3856     * @see #setTextColor(int)
3857     *
3858     * @attr ref android.R.styleable#TextView_textColor
3859     */
3860    public final ColorStateList getTextColors() {
3861        return mTextColor;
3862    }
3863
3864    /**
3865     * <p>Return the current color selected for normal text.</p>
3866     *
3867     * @return Returns the current text color.
3868     */
3869    @ColorInt
3870    public final int getCurrentTextColor() {
3871        return mCurTextColor;
3872    }
3873
3874    /**
3875     * Sets the color used to display the selection highlight.
3876     *
3877     * @attr ref android.R.styleable#TextView_textColorHighlight
3878     */
3879    @android.view.RemotableViewMethod
3880    public void setHighlightColor(@ColorInt int color) {
3881        if (mHighlightColor != color) {
3882            mHighlightColor = color;
3883            invalidate();
3884        }
3885    }
3886
3887    /**
3888     * @return the color used to display the selection highlight
3889     *
3890     * @see #setHighlightColor(int)
3891     *
3892     * @attr ref android.R.styleable#TextView_textColorHighlight
3893     */
3894    @ColorInt
3895    public int getHighlightColor() {
3896        return mHighlightColor;
3897    }
3898
3899    /**
3900     * Sets whether the soft input method will be made visible when this
3901     * TextView gets focused. The default is true.
3902     */
3903    @android.view.RemotableViewMethod
3904    public final void setShowSoftInputOnFocus(boolean show) {
3905        createEditorIfNeeded();
3906        mEditor.mShowSoftInputOnFocus = show;
3907    }
3908
3909    /**
3910     * Returns whether the soft input method will be made visible when this
3911     * TextView gets focused. The default is true.
3912     */
3913    public final boolean getShowSoftInputOnFocus() {
3914        // When there is no Editor, return default true value
3915        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3916    }
3917
3918    /**
3919     * Gives the text a shadow of the specified blur radius and color, the specified
3920     * distance from its drawn position.
3921     * <p>
3922     * The text shadow produced does not interact with the properties on view
3923     * that are responsible for real time shadows,
3924     * {@link View#getElevation() elevation} and
3925     * {@link View#getTranslationZ() translationZ}.
3926     *
3927     * @see Paint#setShadowLayer(float, float, float, int)
3928     *
3929     * @attr ref android.R.styleable#TextView_shadowColor
3930     * @attr ref android.R.styleable#TextView_shadowDx
3931     * @attr ref android.R.styleable#TextView_shadowDy
3932     * @attr ref android.R.styleable#TextView_shadowRadius
3933     */
3934    public void setShadowLayer(float radius, float dx, float dy, int color) {
3935        mTextPaint.setShadowLayer(radius, dx, dy, color);
3936
3937        mShadowRadius = radius;
3938        mShadowDx = dx;
3939        mShadowDy = dy;
3940        mShadowColor = color;
3941
3942        // Will change text clip region
3943        if (mEditor != null) {
3944            mEditor.invalidateTextDisplayList();
3945            mEditor.invalidateHandlesAndActionMode();
3946        }
3947        invalidate();
3948    }
3949
3950    /**
3951     * Gets the radius of the shadow layer.
3952     *
3953     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3954     *
3955     * @see #setShadowLayer(float, float, float, int)
3956     *
3957     * @attr ref android.R.styleable#TextView_shadowRadius
3958     */
3959    public float getShadowRadius() {
3960        return mShadowRadius;
3961    }
3962
3963    /**
3964     * @return the horizontal offset of the shadow layer
3965     *
3966     * @see #setShadowLayer(float, float, float, int)
3967     *
3968     * @attr ref android.R.styleable#TextView_shadowDx
3969     */
3970    public float getShadowDx() {
3971        return mShadowDx;
3972    }
3973
3974    /**
3975     * @return the vertical offset of the shadow layer
3976     *
3977     * @see #setShadowLayer(float, float, float, int)
3978     *
3979     * @attr ref android.R.styleable#TextView_shadowDy
3980     */
3981    public float getShadowDy() {
3982        return mShadowDy;
3983    }
3984
3985    /**
3986     * @return the color of the shadow layer
3987     *
3988     * @see #setShadowLayer(float, float, float, int)
3989     *
3990     * @attr ref android.R.styleable#TextView_shadowColor
3991     */
3992    @ColorInt
3993    public int getShadowColor() {
3994        return mShadowColor;
3995    }
3996
3997    /**
3998     * @return the base paint used for the text.  Please use this only to
3999     * consult the Paint's properties and not to change them.
4000     */
4001    public TextPaint getPaint() {
4002        return mTextPaint;
4003    }
4004
4005    /**
4006     * Sets the autolink mask of the text.  See {@link
4007     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
4008     * possible values.
4009     *
4010     * @attr ref android.R.styleable#TextView_autoLink
4011     */
4012    @android.view.RemotableViewMethod
4013    public final void setAutoLinkMask(int mask) {
4014        mAutoLinkMask = mask;
4015    }
4016
4017    /**
4018     * Sets whether the movement method will automatically be set to
4019     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
4020     * set to nonzero and links are detected in {@link #setText}.
4021     * The default is true.
4022     *
4023     * @attr ref android.R.styleable#TextView_linksClickable
4024     */
4025    @android.view.RemotableViewMethod
4026    public final void setLinksClickable(boolean whether) {
4027        mLinksClickable = whether;
4028    }
4029
4030    /**
4031     * Returns whether the movement method will automatically be set to
4032     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
4033     * set to nonzero and links are detected in {@link #setText}.
4034     * The default is true.
4035     *
4036     * @attr ref android.R.styleable#TextView_linksClickable
4037     */
4038    public final boolean getLinksClickable() {
4039        return mLinksClickable;
4040    }
4041
4042    /**
4043     * Returns the list of URLSpans attached to the text
4044     * (by {@link Linkify} or otherwise) if any.  You can call
4045     * {@link URLSpan#getURL} on them to find where they link to
4046     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
4047     * to find the region of the text they are attached to.
4048     */
4049    public URLSpan[] getUrls() {
4050        if (mText instanceof Spanned) {
4051            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
4052        } else {
4053            return new URLSpan[0];
4054        }
4055    }
4056
4057    /**
4058     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
4059     * TextView.
4060     *
4061     * @see #setHintTextColor(ColorStateList)
4062     * @see #getHintTextColors()
4063     * @see #setTextColor(int)
4064     *
4065     * @attr ref android.R.styleable#TextView_textColorHint
4066     */
4067    @android.view.RemotableViewMethod
4068    public final void setHintTextColor(@ColorInt int color) {
4069        mHintTextColor = ColorStateList.valueOf(color);
4070        updateTextColors();
4071    }
4072
4073    /**
4074     * Sets the color of the hint text.
4075     *
4076     * @see #getHintTextColors()
4077     * @see #setHintTextColor(int)
4078     * @see #setTextColor(ColorStateList)
4079     * @see #setLinkTextColor(ColorStateList)
4080     *
4081     * @attr ref android.R.styleable#TextView_textColorHint
4082     */
4083    public final void setHintTextColor(ColorStateList colors) {
4084        mHintTextColor = colors;
4085        updateTextColors();
4086    }
4087
4088    /**
4089     * @return the color of the hint text, for the different states of this TextView.
4090     *
4091     * @see #setHintTextColor(ColorStateList)
4092     * @see #setHintTextColor(int)
4093     * @see #setTextColor(ColorStateList)
4094     * @see #setLinkTextColor(ColorStateList)
4095     *
4096     * @attr ref android.R.styleable#TextView_textColorHint
4097     */
4098    public final ColorStateList getHintTextColors() {
4099        return mHintTextColor;
4100    }
4101
4102    /**
4103     * <p>Return the current color selected to paint the hint text.</p>
4104     *
4105     * @return Returns the current hint text color.
4106     */
4107    @ColorInt
4108    public final int getCurrentHintTextColor() {
4109        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
4110    }
4111
4112    /**
4113     * Sets the color of links in the text.
4114     *
4115     * @see #setLinkTextColor(ColorStateList)
4116     * @see #getLinkTextColors()
4117     *
4118     * @attr ref android.R.styleable#TextView_textColorLink
4119     */
4120    @android.view.RemotableViewMethod
4121    public final void setLinkTextColor(@ColorInt int color) {
4122        mLinkTextColor = ColorStateList.valueOf(color);
4123        updateTextColors();
4124    }
4125
4126    /**
4127     * Sets the color of links in the text.
4128     *
4129     * @see #setLinkTextColor(int)
4130     * @see #getLinkTextColors()
4131     * @see #setTextColor(ColorStateList)
4132     * @see #setHintTextColor(ColorStateList)
4133     *
4134     * @attr ref android.R.styleable#TextView_textColorLink
4135     */
4136    public final void setLinkTextColor(ColorStateList colors) {
4137        mLinkTextColor = colors;
4138        updateTextColors();
4139    }
4140
4141    /**
4142     * @return the list of colors used to paint the links in the text, for the different states of
4143     * this TextView
4144     *
4145     * @see #setLinkTextColor(ColorStateList)
4146     * @see #setLinkTextColor(int)
4147     *
4148     * @attr ref android.R.styleable#TextView_textColorLink
4149     */
4150    public final ColorStateList getLinkTextColors() {
4151        return mLinkTextColor;
4152    }
4153
4154    /**
4155     * Sets the horizontal alignment of the text and the
4156     * vertical gravity that will be used when there is extra space
4157     * in the TextView beyond what is required for the text itself.
4158     *
4159     * @see android.view.Gravity
4160     * @attr ref android.R.styleable#TextView_gravity
4161     */
4162    public void setGravity(int gravity) {
4163        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
4164            gravity |= Gravity.START;
4165        }
4166        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
4167            gravity |= Gravity.TOP;
4168        }
4169
4170        boolean newLayout = false;
4171
4172        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)
4173                != (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
4174            newLayout = true;
4175        }
4176
4177        if (gravity != mGravity) {
4178            invalidate();
4179        }
4180
4181        mGravity = gravity;
4182
4183        if (mLayout != null && newLayout) {
4184            // XXX this is heavy-handed because no actual content changes.
4185            int want = mLayout.getWidth();
4186            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
4187
4188            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
4189                    mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), true);
4190        }
4191    }
4192
4193    /**
4194     * Returns the horizontal and vertical alignment of this TextView.
4195     *
4196     * @see android.view.Gravity
4197     * @attr ref android.R.styleable#TextView_gravity
4198     */
4199    public int getGravity() {
4200        return mGravity;
4201    }
4202
4203    /**
4204     * @return the flags on the Paint being used to display the text.
4205     * @see Paint#getFlags
4206     */
4207    public int getPaintFlags() {
4208        return mTextPaint.getFlags();
4209    }
4210
4211    /**
4212     * Sets flags on the Paint being used to display the text and
4213     * reflows the text if they are different from the old flags.
4214     * @see Paint#setFlags
4215     */
4216    @android.view.RemotableViewMethod
4217    public void setPaintFlags(int flags) {
4218        if (mTextPaint.getFlags() != flags) {
4219            mTextPaint.setFlags(flags);
4220
4221            if (mLayout != null) {
4222                nullLayouts();
4223                requestLayout();
4224                invalidate();
4225            }
4226        }
4227    }
4228
4229    /**
4230     * Sets whether the text should be allowed to be wider than the
4231     * View is.  If false, it will be wrapped to the width of the View.
4232     *
4233     * @attr ref android.R.styleable#TextView_scrollHorizontally
4234     */
4235    public void setHorizontallyScrolling(boolean whether) {
4236        if (mHorizontallyScrolling != whether) {
4237            mHorizontallyScrolling = whether;
4238
4239            if (mLayout != null) {
4240                nullLayouts();
4241                requestLayout();
4242                invalidate();
4243            }
4244        }
4245    }
4246
4247    /**
4248     * Returns whether the text is allowed to be wider than the View is.
4249     * If false, the text will be wrapped to the width of the View.
4250     *
4251     * @attr ref android.R.styleable#TextView_scrollHorizontally
4252     * @hide
4253     */
4254    public boolean getHorizontallyScrolling() {
4255        return mHorizontallyScrolling;
4256    }
4257
4258    /**
4259     * Sets the height of the TextView to be at least {@code minLines} tall.
4260     * <p>
4261     * This value is used for height calculation if LayoutParams does not force TextView to have an
4262     * exact height. Setting this value overrides other previous minimum height configurations such
4263     * as {@link #setMinHeight(int)} or {@link #setHeight(int)}. {@link #setSingleLine()} will set
4264     * this value to 1.
4265     *
4266     * @param minLines the minimum height of TextView in terms of number of lines
4267     *
4268     * @see #getMinLines()
4269     * @see #setLines(int)
4270     *
4271     * @attr ref android.R.styleable#TextView_minLines
4272     */
4273    @android.view.RemotableViewMethod
4274    public void setMinLines(int minLines) {
4275        mMinimum = minLines;
4276        mMinMode = LINES;
4277
4278        requestLayout();
4279        invalidate();
4280    }
4281
4282    /**
4283     * Returns the minimum height of TextView in terms of number of lines or -1 if the minimum
4284     * height was set using {@link #setMinHeight(int)} or {@link #setHeight(int)}.
4285     *
4286     * @return the minimum height of TextView in terms of number of lines or -1 if the minimum
4287     *         height is not defined in lines
4288     *
4289     * @see #setMinLines(int)
4290     * @see #setLines(int)
4291     *
4292     * @attr ref android.R.styleable#TextView_minLines
4293     */
4294    public int getMinLines() {
4295        return mMinMode == LINES ? mMinimum : -1;
4296    }
4297
4298    /**
4299     * Sets the height of the TextView to be at least {@code minPixels} tall.
4300     * <p>
4301     * This value is used for height calculation if LayoutParams does not force TextView to have an
4302     * exact height. Setting this value overrides previous minimum height configurations such as
4303     * {@link #setMinLines(int)} or {@link #setLines(int)}.
4304     * <p>
4305     * The value given here is different than {@link #setMinimumHeight(int)}. Between
4306     * {@code minHeight} and the value set in {@link #setMinimumHeight(int)}, the greater one is
4307     * used to decide the final height.
4308     *
4309     * @param minPixels the minimum height of TextView in terms of pixels
4310     *
4311     * @see #getMinHeight()
4312     * @see #setHeight(int)
4313     *
4314     * @attr ref android.R.styleable#TextView_minHeight
4315     */
4316    @android.view.RemotableViewMethod
4317    public void setMinHeight(int minPixels) {
4318        mMinimum = minPixels;
4319        mMinMode = PIXELS;
4320
4321        requestLayout();
4322        invalidate();
4323    }
4324
4325    /**
4326     * Returns the minimum height of TextView in terms of pixels or -1 if the minimum height was
4327     * set using {@link #setMinLines(int)} or {@link #setLines(int)}.
4328     *
4329     * @return the minimum height of TextView in terms of pixels or -1 if the minimum height is not
4330     *         defined in pixels
4331     *
4332     * @see #setMinHeight(int)
4333     * @see #setHeight(int)
4334     *
4335     * @attr ref android.R.styleable#TextView_minHeight
4336     */
4337    public int getMinHeight() {
4338        return mMinMode == PIXELS ? mMinimum : -1;
4339    }
4340
4341    /**
4342     * Sets the height of the TextView to be at most {@code maxLines} tall.
4343     * <p>
4344     * This value is used for height calculation if LayoutParams does not force TextView to have an
4345     * exact height. Setting this value overrides previous maximum height configurations such as
4346     * {@link #setMaxHeight(int)} or {@link #setLines(int)}.
4347     *
4348     * @param maxLines the maximum height of TextView in terms of number of lines
4349     *
4350     * @see #getMaxLines()
4351     * @see #setLines(int)
4352     *
4353     * @attr ref android.R.styleable#TextView_maxLines
4354     */
4355    @android.view.RemotableViewMethod
4356    public void setMaxLines(int maxLines) {
4357        mMaximum = maxLines;
4358        mMaxMode = LINES;
4359
4360        requestLayout();
4361        invalidate();
4362    }
4363
4364    /**
4365     * Returns the maximum height of TextView in terms of number of lines or -1 if the
4366     * maximum height was set using {@link #setMaxHeight(int)} or {@link #setHeight(int)}.
4367     *
4368     * @return the maximum height of TextView in terms of number of lines. -1 if the maximum height
4369     *         is not defined in lines.
4370     *
4371     * @see #setMaxLines(int)
4372     * @see #setLines(int)
4373     *
4374     * @attr ref android.R.styleable#TextView_maxLines
4375     */
4376    public int getMaxLines() {
4377        return mMaxMode == LINES ? mMaximum : -1;
4378    }
4379
4380    /**
4381     * Sets the height of the TextView to be at most {@code maxPixels} tall.
4382     * <p>
4383     * This value is used for height calculation if LayoutParams does not force TextView to have an
4384     * exact height. Setting this value overrides previous maximum height configurations such as
4385     * {@link #setMaxLines(int)} or {@link #setLines(int)}.
4386     *
4387     * @param maxPixels the maximum height of TextView in terms of pixels
4388     *
4389     * @see #getMaxHeight()
4390     * @see #setHeight(int)
4391     *
4392     * @attr ref android.R.styleable#TextView_maxHeight
4393     */
4394    @android.view.RemotableViewMethod
4395    public void setMaxHeight(int maxPixels) {
4396        mMaximum = maxPixels;
4397        mMaxMode = PIXELS;
4398
4399        requestLayout();
4400        invalidate();
4401    }
4402
4403    /**
4404     * Returns the maximum height of TextView in terms of pixels or -1 if the maximum height was
4405     * set using {@link #setMaxLines(int)} or {@link #setLines(int)}.
4406     *
4407     * @return the maximum height of TextView in terms of pixels or -1 if the maximum height
4408     *         is not defined in pixels
4409     *
4410     * @see #setMaxHeight(int)
4411     * @see #setHeight(int)
4412     *
4413     * @attr ref android.R.styleable#TextView_maxHeight
4414     */
4415    public int getMaxHeight() {
4416        return mMaxMode == PIXELS ? mMaximum : -1;
4417    }
4418
4419    /**
4420     * Sets the height of the TextView to be exactly {@code lines} tall.
4421     * <p>
4422     * This value is used for height calculation if LayoutParams does not force TextView to have an
4423     * exact height. Setting this value overrides previous minimum/maximum height configurations
4424     * such as {@link #setMinLines(int)} or {@link #setMaxLines(int)}. {@link #setSingleLine()} will
4425     * set this value to 1.
4426     *
4427     * @param lines the exact height of the TextView in terms of lines
4428     *
4429     * @see #setHeight(int)
4430     *
4431     * @attr ref android.R.styleable#TextView_lines
4432     */
4433    @android.view.RemotableViewMethod
4434    public void setLines(int lines) {
4435        mMaximum = mMinimum = lines;
4436        mMaxMode = mMinMode = LINES;
4437
4438        requestLayout();
4439        invalidate();
4440    }
4441
4442    /**
4443     * Sets the height of the TextView to be exactly <code>pixels</code> tall.
4444     * <p>
4445     * This value is used for height calculation if LayoutParams does not force TextView to have an
4446     * exact height. Setting this value overrides previous minimum/maximum height configurations
4447     * such as {@link #setMinHeight(int)} or {@link #setMaxHeight(int)}.
4448     *
4449     * @param pixels the exact height of the TextView in terms of pixels
4450     *
4451     * @see #setLines(int)
4452     *
4453     * @attr ref android.R.styleable#TextView_height
4454     */
4455    @android.view.RemotableViewMethod
4456    public void setHeight(int pixels) {
4457        mMaximum = mMinimum = pixels;
4458        mMaxMode = mMinMode = PIXELS;
4459
4460        requestLayout();
4461        invalidate();
4462    }
4463
4464    /**
4465     * Sets the width of the TextView to be at least {@code minEms} wide.
4466     * <p>
4467     * This value is used for width calculation if LayoutParams does not force TextView to have an
4468     * exact width. Setting this value overrides previous minimum width configurations such as
4469     * {@link #setMinWidth(int)} or {@link #setWidth(int)}.
4470     *
4471     * @param minEms the minimum width of TextView in terms of ems
4472     *
4473     * @see #getMinEms()
4474     * @see #setEms(int)
4475     *
4476     * @attr ref android.R.styleable#TextView_minEms
4477     */
4478    @android.view.RemotableViewMethod
4479    public void setMinEms(int minEms) {
4480        mMinWidth = minEms;
4481        mMinWidthMode = EMS;
4482
4483        requestLayout();
4484        invalidate();
4485    }
4486
4487    /**
4488     * Returns the minimum width of TextView in terms of ems or -1 if the minimum width was set
4489     * using {@link #setMinWidth(int)} or {@link #setWidth(int)}.
4490     *
4491     * @return the minimum width of TextView in terms of ems. -1 if the minimum width is not
4492     *         defined in ems
4493     *
4494     * @see #setMinEms(int)
4495     * @see #setEms(int)
4496     *
4497     * @attr ref android.R.styleable#TextView_minEms
4498     */
4499    public int getMinEms() {
4500        return mMinWidthMode == EMS ? mMinWidth : -1;
4501    }
4502
4503    /**
4504     * Sets the width of the TextView to be at least {@code minPixels} wide.
4505     * <p>
4506     * This value is used for width calculation if LayoutParams does not force TextView to have an
4507     * exact width. Setting this value overrides previous minimum width configurations such as
4508     * {@link #setMinEms(int)} or {@link #setEms(int)}.
4509     * <p>
4510     * The value given here is different than {@link #setMinimumWidth(int)}. Between
4511     * {@code minWidth} and the value set in {@link #setMinimumWidth(int)}, the greater one is used
4512     * to decide the final width.
4513     *
4514     * @param minPixels the minimum width of TextView in terms of pixels
4515     *
4516     * @see #getMinWidth()
4517     * @see #setWidth(int)
4518     *
4519     * @attr ref android.R.styleable#TextView_minWidth
4520     */
4521    @android.view.RemotableViewMethod
4522    public void setMinWidth(int minPixels) {
4523        mMinWidth = minPixels;
4524        mMinWidthMode = PIXELS;
4525
4526        requestLayout();
4527        invalidate();
4528    }
4529
4530    /**
4531     * Returns the minimum width of TextView in terms of pixels or -1 if the minimum width was set
4532     * using {@link #setMinEms(int)} or {@link #setEms(int)}.
4533     *
4534     * @return the minimum width of TextView in terms of pixels or -1 if the minimum width is not
4535     *         defined in pixels
4536     *
4537     * @see #setMinWidth(int)
4538     * @see #setWidth(int)
4539     *
4540     * @attr ref android.R.styleable#TextView_minWidth
4541     */
4542    public int getMinWidth() {
4543        return mMinWidthMode == PIXELS ? mMinWidth : -1;
4544    }
4545
4546    /**
4547     * Sets the width of the TextView to be at most {@code maxEms} wide.
4548     * <p>
4549     * This value is used for width calculation if LayoutParams does not force TextView to have an
4550     * exact width. Setting this value overrides previous maximum width configurations such as
4551     * {@link #setMaxWidth(int)} or {@link #setWidth(int)}.
4552     *
4553     * @param maxEms the maximum width of TextView in terms of ems
4554     *
4555     * @see #getMaxEms()
4556     * @see #setEms(int)
4557     *
4558     * @attr ref android.R.styleable#TextView_maxEms
4559     */
4560    @android.view.RemotableViewMethod
4561    public void setMaxEms(int maxEms) {
4562        mMaxWidth = maxEms;
4563        mMaxWidthMode = EMS;
4564
4565        requestLayout();
4566        invalidate();
4567    }
4568
4569    /**
4570     * Returns the maximum width of TextView in terms of ems or -1 if the maximum width was set
4571     * using {@link #setMaxWidth(int)} or {@link #setWidth(int)}.
4572     *
4573     * @return the maximum width of TextView in terms of ems or -1 if the maximum width is not
4574     *         defined in ems
4575     *
4576     * @see #setMaxEms(int)
4577     * @see #setEms(int)
4578     *
4579     * @attr ref android.R.styleable#TextView_maxEms
4580     */
4581    public int getMaxEms() {
4582        return mMaxWidthMode == EMS ? mMaxWidth : -1;
4583    }
4584
4585    /**
4586     * Sets the width of the TextView to be at most {@code maxPixels} wide.
4587     * <p>
4588     * This value is used for width calculation if LayoutParams does not force TextView to have an
4589     * exact width. Setting this value overrides previous maximum width configurations such as
4590     * {@link #setMaxEms(int)} or {@link #setEms(int)}.
4591     *
4592     * @param maxPixels the maximum width of TextView in terms of pixels
4593     *
4594     * @see #getMaxWidth()
4595     * @see #setWidth(int)
4596     *
4597     * @attr ref android.R.styleable#TextView_maxWidth
4598     */
4599    @android.view.RemotableViewMethod
4600    public void setMaxWidth(int maxPixels) {
4601        mMaxWidth = maxPixels;
4602        mMaxWidthMode = PIXELS;
4603
4604        requestLayout();
4605        invalidate();
4606    }
4607
4608    /**
4609     * Returns the maximum width of TextView in terms of pixels or -1 if the maximum width was set
4610     * using {@link #setMaxEms(int)} or {@link #setEms(int)}.
4611     *
4612     * @return the maximum width of TextView in terms of pixels. -1 if the maximum width is not
4613     *         defined in pixels
4614     *
4615     * @see #setMaxWidth(int)
4616     * @see #setWidth(int)
4617     *
4618     * @attr ref android.R.styleable#TextView_maxWidth
4619     */
4620    public int getMaxWidth() {
4621        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
4622    }
4623
4624    /**
4625     * Sets the width of the TextView to be exactly {@code ems} wide.
4626     *
4627     * This value is used for width calculation if LayoutParams does not force TextView to have an
4628     * exact width. Setting this value overrides previous minimum/maximum configurations such as
4629     * {@link #setMinEms(int)} or {@link #setMaxEms(int)}.
4630     *
4631     * @param ems the exact width of the TextView in terms of ems
4632     *
4633     * @see #setWidth(int)
4634     *
4635     * @attr ref android.R.styleable#TextView_ems
4636     */
4637    @android.view.RemotableViewMethod
4638    public void setEms(int ems) {
4639        mMaxWidth = mMinWidth = ems;
4640        mMaxWidthMode = mMinWidthMode = EMS;
4641
4642        requestLayout();
4643        invalidate();
4644    }
4645
4646    /**
4647     * Sets the width of the TextView to be exactly {@code pixels} wide.
4648     * <p>
4649     * This value is used for width calculation if LayoutParams does not force TextView to have an
4650     * exact width. Setting this value overrides previous minimum/maximum width configurations
4651     * such as {@link #setMinWidth(int)} or {@link #setMaxWidth(int)}.
4652     *
4653     * @param pixels the exact width of the TextView in terms of pixels
4654     *
4655     * @see #setEms(int)
4656     *
4657     * @attr ref android.R.styleable#TextView_width
4658     */
4659    @android.view.RemotableViewMethod
4660    public void setWidth(int pixels) {
4661        mMaxWidth = mMinWidth = pixels;
4662        mMaxWidthMode = mMinWidthMode = PIXELS;
4663
4664        requestLayout();
4665        invalidate();
4666    }
4667
4668    /**
4669     * Sets line spacing for this TextView.  Each line will have its height
4670     * multiplied by <code>mult</code> and have <code>add</code> added to it.
4671     *
4672     * @attr ref android.R.styleable#TextView_lineSpacingExtra
4673     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
4674     */
4675    public void setLineSpacing(float add, float mult) {
4676        if (mSpacingAdd != add || mSpacingMult != mult) {
4677            mSpacingAdd = add;
4678            mSpacingMult = mult;
4679
4680            if (mLayout != null) {
4681                nullLayouts();
4682                requestLayout();
4683                invalidate();
4684            }
4685        }
4686    }
4687
4688    /**
4689     * Gets the line spacing multiplier
4690     *
4691     * @return the value by which each line's height is multiplied to get its actual height.
4692     *
4693     * @see #setLineSpacing(float, float)
4694     * @see #getLineSpacingExtra()
4695     *
4696     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
4697     */
4698    public float getLineSpacingMultiplier() {
4699        return mSpacingMult;
4700    }
4701
4702    /**
4703     * Gets the line spacing extra space
4704     *
4705     * @return the extra space that is added to the height of each lines of this TextView.
4706     *
4707     * @see #setLineSpacing(float, float)
4708     * @see #getLineSpacingMultiplier()
4709     *
4710     * @attr ref android.R.styleable#TextView_lineSpacingExtra
4711     */
4712    public float getLineSpacingExtra() {
4713        return mSpacingAdd;
4714    }
4715
4716    /**
4717     * Convenience method to append the specified text to the TextView's
4718     * display buffer, upgrading it to {@link android.widget.TextView.BufferType#EDITABLE}
4719     * if it was not already editable.
4720     *
4721     * @param text text to be appended to the already displayed text
4722     */
4723    public final void append(CharSequence text) {
4724        append(text, 0, text.length());
4725    }
4726
4727    /**
4728     * Convenience method to append the specified text slice to the TextView's
4729     * display buffer, upgrading it to {@link android.widget.TextView.BufferType#EDITABLE}
4730     * if it was not already editable.
4731     *
4732     * @param text text to be appended to the already displayed text
4733     * @param start the index of the first character in the {@code text}
4734     * @param end the index of the character following the last character in the {@code text}
4735     *
4736     * @see Appendable#append(CharSequence, int, int)
4737     */
4738    public void append(CharSequence text, int start, int end) {
4739        if (!(mText instanceof Editable)) {
4740            setText(mText, BufferType.EDITABLE);
4741        }
4742
4743        ((Editable) mText).append(text, start, end);
4744
4745        if (mAutoLinkMask != 0) {
4746            boolean linksWereAdded = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4747            // Do not change the movement method for text that support text selection as it
4748            // would prevent an arbitrary cursor displacement.
4749            if (linksWereAdded && mLinksClickable && !textCanBeSelected()) {
4750                setMovementMethod(LinkMovementMethod.getInstance());
4751            }
4752        }
4753    }
4754
4755    private void updateTextColors() {
4756        boolean inval = false;
4757        int color = mTextColor.getColorForState(getDrawableState(), 0);
4758        if (color != mCurTextColor) {
4759            mCurTextColor = color;
4760            inval = true;
4761        }
4762        if (mLinkTextColor != null) {
4763            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4764            if (color != mTextPaint.linkColor) {
4765                mTextPaint.linkColor = color;
4766                inval = true;
4767            }
4768        }
4769        if (mHintTextColor != null) {
4770            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4771            if (color != mCurHintTextColor) {
4772                mCurHintTextColor = color;
4773                if (mText.length() == 0) {
4774                    inval = true;
4775                }
4776            }
4777        }
4778        if (inval) {
4779            // Text needs to be redrawn with the new color
4780            if (mEditor != null) mEditor.invalidateTextDisplayList();
4781            invalidate();
4782        }
4783    }
4784
4785    @Override
4786    protected void drawableStateChanged() {
4787        super.drawableStateChanged();
4788
4789        if (mTextColor != null && mTextColor.isStateful()
4790                || (mHintTextColor != null && mHintTextColor.isStateful())
4791                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4792            updateTextColors();
4793        }
4794
4795        if (mDrawables != null) {
4796            final int[] state = getDrawableState();
4797            for (Drawable dr : mDrawables.mShowing) {
4798                if (dr != null && dr.isStateful() && dr.setState(state)) {
4799                    invalidateDrawable(dr);
4800                }
4801            }
4802        }
4803    }
4804
4805    @Override
4806    public void drawableHotspotChanged(float x, float y) {
4807        super.drawableHotspotChanged(x, y);
4808
4809        if (mDrawables != null) {
4810            for (Drawable dr : mDrawables.mShowing) {
4811                if (dr != null) {
4812                    dr.setHotspot(x, y);
4813                }
4814            }
4815        }
4816    }
4817
4818    @Override
4819    public Parcelable onSaveInstanceState() {
4820        Parcelable superState = super.onSaveInstanceState();
4821
4822        // Save state if we are forced to
4823        final boolean freezesText = getFreezesText();
4824        boolean hasSelection = false;
4825        int start = -1;
4826        int end = -1;
4827
4828        if (mText != null) {
4829            start = getSelectionStart();
4830            end = getSelectionEnd();
4831            if (start >= 0 || end >= 0) {
4832                // Or save state if there is a selection
4833                hasSelection = true;
4834            }
4835        }
4836
4837        if (freezesText || hasSelection) {
4838            SavedState ss = new SavedState(superState);
4839
4840            if (freezesText) {
4841                if (mText instanceof Spanned) {
4842                    final Spannable sp = new SpannableStringBuilder(mText);
4843
4844                    if (mEditor != null) {
4845                        removeMisspelledSpans(sp);
4846                        sp.removeSpan(mEditor.mSuggestionRangeSpan);
4847                    }
4848
4849                    ss.text = sp;
4850                } else {
4851                    ss.text = mText.toString();
4852                }
4853            }
4854
4855            if (hasSelection) {
4856                // XXX Should also save the current scroll position!
4857                ss.selStart = start;
4858                ss.selEnd = end;
4859            }
4860
4861            if (isFocused() && start >= 0 && end >= 0) {
4862                ss.frozenWithFocus = true;
4863            }
4864
4865            ss.error = getError();
4866
4867            if (mEditor != null) {
4868                ss.editorState = mEditor.saveInstanceState();
4869            }
4870            return ss;
4871        }
4872
4873        return superState;
4874    }
4875
4876    void removeMisspelledSpans(Spannable spannable) {
4877        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4878                SuggestionSpan.class);
4879        for (int i = 0; i < suggestionSpans.length; i++) {
4880            int flags = suggestionSpans[i].getFlags();
4881            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4882                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4883                spannable.removeSpan(suggestionSpans[i]);
4884            }
4885        }
4886    }
4887
4888    @Override
4889    public void onRestoreInstanceState(Parcelable state) {
4890        if (!(state instanceof SavedState)) {
4891            super.onRestoreInstanceState(state);
4892            return;
4893        }
4894
4895        SavedState ss = (SavedState) state;
4896        super.onRestoreInstanceState(ss.getSuperState());
4897
4898        // XXX restore buffer type too, as well as lots of other stuff
4899        if (ss.text != null) {
4900            setText(ss.text);
4901        }
4902
4903        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4904            if (mText instanceof Spannable) {
4905                int len = mText.length();
4906
4907                if (ss.selStart > len || ss.selEnd > len) {
4908                    String restored = "";
4909
4910                    if (ss.text != null) {
4911                        restored = "(restored) ";
4912                    }
4913
4914                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart + "/" + ss.selEnd
4915                            + " out of range for " + restored + "text " + mText);
4916                } else {
4917                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4918
4919                    if (ss.frozenWithFocus) {
4920                        createEditorIfNeeded();
4921                        mEditor.mFrozenWithFocus = true;
4922                    }
4923                }
4924            }
4925        }
4926
4927        if (ss.error != null) {
4928            final CharSequence error = ss.error;
4929            // Display the error later, after the first layout pass
4930            post(new Runnable() {
4931                public void run() {
4932                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4933                        setError(error);
4934                    }
4935                }
4936            });
4937        }
4938
4939        if (ss.editorState != null) {
4940            createEditorIfNeeded();
4941            mEditor.restoreInstanceState(ss.editorState);
4942        }
4943    }
4944
4945    /**
4946     * Control whether this text view saves its entire text contents when
4947     * freezing to an icicle, in addition to dynamic state such as cursor
4948     * position.  By default this is false, not saving the text.  Set to true
4949     * if the text in the text view is not being saved somewhere else in
4950     * persistent storage (such as in a content provider) so that if the
4951     * view is later thawed the user will not lose their data. For
4952     * {@link android.widget.EditText} it is always enabled, regardless of
4953     * the value of the attribute.
4954     *
4955     * @param freezesText Controls whether a frozen icicle should include the
4956     * entire text data: true to include it, false to not.
4957     *
4958     * @attr ref android.R.styleable#TextView_freezesText
4959     */
4960    @android.view.RemotableViewMethod
4961    public void setFreezesText(boolean freezesText) {
4962        mFreezesText = freezesText;
4963    }
4964
4965    /**
4966     * Return whether this text view is including its entire text contents
4967     * in frozen icicles. For {@link android.widget.EditText} it always returns true.
4968     *
4969     * @return Returns true if text is included, false if it isn't.
4970     *
4971     * @see #setFreezesText
4972     */
4973    public boolean getFreezesText() {
4974        return mFreezesText;
4975    }
4976
4977    ///////////////////////////////////////////////////////////////////////////
4978
4979    /**
4980     * Sets the Factory used to create new {@link Editable Editables}.
4981     *
4982     * @param factory {@link android.text.Editable.Factory Editable.Factory} to be used
4983     *
4984     * @see android.text.Editable.Factory
4985     * @see android.widget.TextView.BufferType#EDITABLE
4986     */
4987    public final void setEditableFactory(Editable.Factory factory) {
4988        mEditableFactory = factory;
4989        setText(mText);
4990    }
4991
4992    /**
4993     * Sets the Factory used to create new {@link Spannable Spannables}.
4994     *
4995     * @param factory {@link android.text.Spannable.Factory Spannable.Factory} to be used
4996     *
4997     * @see android.text.Spannable.Factory
4998     * @see android.widget.TextView.BufferType#SPANNABLE
4999     */
5000    public final void setSpannableFactory(Spannable.Factory factory) {
5001        mSpannableFactory = factory;
5002        setText(mText);
5003    }
5004
5005    /**
5006     * Sets the text to be displayed. TextView <em>does not</em> accept
5007     * HTML-like formatting, which you can do with text strings in XML resource files.
5008     * To style your strings, attach android.text.style.* objects to a
5009     * {@link android.text.SpannableString}, or see the
5010     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
5011     * Available Resource Types</a> documentation for an example of setting
5012     * formatted text in the XML resource file.
5013     * <p/>
5014     * When required, TextView will use {@link android.text.Spannable.Factory} to create final or
5015     * intermediate {@link Spannable Spannables}. Likewise it will use
5016     * {@link android.text.Editable.Factory} to create final or intermediate
5017     * {@link Editable Editables}.
5018     *
5019     * @param text text to be displayed
5020     *
5021     * @attr ref android.R.styleable#TextView_text
5022     */
5023    @android.view.RemotableViewMethod
5024    public final void setText(CharSequence text) {
5025        setText(text, mBufferType);
5026    }
5027
5028    /**
5029     * Sets the text to be displayed but retains the cursor position. Same as
5030     * {@link #setText(CharSequence)} except that the cursor position (if any) is retained in the
5031     * new text.
5032     * <p/>
5033     * When required, TextView will use {@link android.text.Spannable.Factory} to create final or
5034     * intermediate {@link Spannable Spannables}. Likewise it will use
5035     * {@link android.text.Editable.Factory} to create final or intermediate
5036     * {@link Editable Editables}.
5037     *
5038     * @param text text to be displayed
5039     *
5040     * @see #setText(CharSequence)
5041     */
5042    @android.view.RemotableViewMethod
5043    public final void setTextKeepState(CharSequence text) {
5044        setTextKeepState(text, mBufferType);
5045    }
5046
5047    /**
5048     * Sets the text to be displayed and the {@link android.widget.TextView.BufferType}.
5049     * <p/>
5050     * When required, TextView will use {@link android.text.Spannable.Factory} to create final or
5051     * intermediate {@link Spannable Spannables}. Likewise it will use
5052     * {@link android.text.Editable.Factory} to create final or intermediate
5053     * {@link Editable Editables}.
5054     *
5055     * @param text text to be displayed
5056     * @param type a {@link android.widget.TextView.BufferType} which defines whether the text is
5057     *              stored as a static text, styleable/spannable text, or editable text
5058     *
5059     * @see #setText(CharSequence)
5060     * @see android.widget.TextView.BufferType
5061     * @see #setSpannableFactory(Spannable.Factory)
5062     * @see #setEditableFactory(Editable.Factory)
5063     *
5064     * @attr ref android.R.styleable#TextView_text
5065     * @attr ref android.R.styleable#TextView_bufferType
5066     */
5067    public void setText(CharSequence text, BufferType type) {
5068        setText(text, type, true, 0);
5069
5070        if (mCharWrapper != null) {
5071            mCharWrapper.mChars = null;
5072        }
5073    }
5074
5075    private void setText(CharSequence text, BufferType type,
5076                         boolean notifyBefore, int oldlen) {
5077        mTextFromResource = false;
5078        if (text == null) {
5079            text = "";
5080        }
5081
5082        // If suggestions are not enabled, remove the suggestion spans from the text
5083        if (!isSuggestionsEnabled()) {
5084            text = removeSuggestionSpans(text);
5085        }
5086
5087        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
5088
5089        if (text instanceof Spanned
5090                && ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
5091            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
5092                setHorizontalFadingEdgeEnabled(true);
5093                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
5094            } else {
5095                setHorizontalFadingEdgeEnabled(false);
5096                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
5097            }
5098            setEllipsize(TextUtils.TruncateAt.MARQUEE);
5099        }
5100
5101        int n = mFilters.length;
5102        for (int i = 0; i < n; i++) {
5103            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
5104            if (out != null) {
5105                text = out;
5106            }
5107        }
5108
5109        if (notifyBefore) {
5110            if (mText != null) {
5111                oldlen = mText.length();
5112                sendBeforeTextChanged(mText, 0, oldlen, text.length());
5113            } else {
5114                sendBeforeTextChanged("", 0, 0, text.length());
5115            }
5116        }
5117
5118        boolean needEditableForNotification = false;
5119
5120        if (mListeners != null && mListeners.size() != 0) {
5121            needEditableForNotification = true;
5122        }
5123
5124        if (type == BufferType.EDITABLE || getKeyListener() != null
5125                || needEditableForNotification) {
5126            createEditorIfNeeded();
5127            mEditor.forgetUndoRedo();
5128            Editable t = mEditableFactory.newEditable(text);
5129            text = t;
5130            setFilters(t, mFilters);
5131            InputMethodManager imm = InputMethodManager.peekInstance();
5132            if (imm != null) imm.restartInput(this);
5133        } else if (type == BufferType.SPANNABLE || mMovement != null) {
5134            text = mSpannableFactory.newSpannable(text);
5135        } else if (!(text instanceof CharWrapper)) {
5136            text = TextUtils.stringOrSpannedString(text);
5137        }
5138
5139        if (mAutoLinkMask != 0) {
5140            Spannable s2;
5141
5142            if (type == BufferType.EDITABLE || text instanceof Spannable) {
5143                s2 = (Spannable) text;
5144            } else {
5145                s2 = mSpannableFactory.newSpannable(text);
5146            }
5147
5148            if (Linkify.addLinks(s2, mAutoLinkMask)) {
5149                text = s2;
5150                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
5151
5152                /*
5153                 * We must go ahead and set the text before changing the
5154                 * movement method, because setMovementMethod() may call
5155                 * setText() again to try to upgrade the buffer type.
5156                 */
5157                mText = text;
5158
5159                // Do not change the movement method for text that support text selection as it
5160                // would prevent an arbitrary cursor displacement.
5161                if (mLinksClickable && !textCanBeSelected()) {
5162                    setMovementMethod(LinkMovementMethod.getInstance());
5163                }
5164            }
5165        }
5166
5167        mBufferType = type;
5168        mText = text;
5169
5170        if (mTransformation == null) {
5171            mTransformed = text;
5172        } else {
5173            mTransformed = mTransformation.getTransformation(text, this);
5174        }
5175
5176        final int textLength = text.length();
5177
5178        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
5179            Spannable sp = (Spannable) text;
5180
5181            // Remove any ChangeWatchers that might have come from other TextViews.
5182            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
5183            final int count = watchers.length;
5184            for (int i = 0; i < count; i++) {
5185                sp.removeSpan(watchers[i]);
5186            }
5187
5188            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
5189
5190            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE
5191                    | (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
5192
5193            if (mEditor != null) mEditor.addSpanWatchers(sp);
5194
5195            if (mTransformation != null) {
5196                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
5197            }
5198
5199            if (mMovement != null) {
5200                mMovement.initialize(this, (Spannable) text);
5201
5202                /*
5203                 * Initializing the movement method will have set the
5204                 * selection, so reset mSelectionMoved to keep that from
5205                 * interfering with the normal on-focus selection-setting.
5206                 */
5207                if (mEditor != null) mEditor.mSelectionMoved = false;
5208            }
5209        }
5210
5211        if (mLayout != null) {
5212            checkForRelayout();
5213        }
5214
5215        sendOnTextChanged(text, 0, oldlen, textLength);
5216        onTextChanged(text, 0, oldlen, textLength);
5217
5218        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
5219
5220        if (needEditableForNotification) {
5221            sendAfterTextChanged((Editable) text);
5222        }
5223
5224        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
5225        if (mEditor != null) mEditor.prepareCursorControllers();
5226    }
5227
5228    /**
5229     * Sets the TextView to display the specified slice of the specified
5230     * char array. You must promise that you will not change the contents
5231     * of the array except for right before another call to setText(),
5232     * since the TextView has no way to know that the text
5233     * has changed and that it needs to invalidate and re-layout.
5234     *
5235     * @param text char array to be displayed
5236     * @param start start index in the char array
5237     * @param len length of char count after {@code start}
5238     */
5239    public final void setText(char[] text, int start, int len) {
5240        int oldlen = 0;
5241
5242        if (start < 0 || len < 0 || start + len > text.length) {
5243            throw new IndexOutOfBoundsException(start + ", " + len);
5244        }
5245
5246        /*
5247         * We must do the before-notification here ourselves because if
5248         * the old text is a CharWrapper we destroy it before calling
5249         * into the normal path.
5250         */
5251        if (mText != null) {
5252            oldlen = mText.length();
5253            sendBeforeTextChanged(mText, 0, oldlen, len);
5254        } else {
5255            sendBeforeTextChanged("", 0, 0, len);
5256        }
5257
5258        if (mCharWrapper == null) {
5259            mCharWrapper = new CharWrapper(text, start, len);
5260        } else {
5261            mCharWrapper.set(text, start, len);
5262        }
5263
5264        setText(mCharWrapper, mBufferType, false, oldlen);
5265    }
5266
5267    /**
5268     * Sets the text to be displayed and the {@link android.widget.TextView.BufferType} but retains
5269     * the cursor position. Same as
5270     * {@link #setText(CharSequence, android.widget.TextView.BufferType)} except that the cursor
5271     * position (if any) is retained in the new text.
5272     * <p/>
5273     * When required, TextView will use {@link android.text.Spannable.Factory} to create final or
5274     * intermediate {@link Spannable Spannables}. Likewise it will use
5275     * {@link android.text.Editable.Factory} to create final or intermediate
5276     * {@link Editable Editables}.
5277     *
5278     * @param text text to be displayed
5279     * @param type a {@link android.widget.TextView.BufferType} which defines whether the text is
5280     *              stored as a static text, styleable/spannable text, or editable text
5281     *
5282     * @see #setText(CharSequence, android.widget.TextView.BufferType)
5283     */
5284    public final void setTextKeepState(CharSequence text, BufferType type) {
5285        int start = getSelectionStart();
5286        int end = getSelectionEnd();
5287        int len = text.length();
5288
5289        setText(text, type);
5290
5291        if (start >= 0 || end >= 0) {
5292            if (mText instanceof Spannable) {
5293                Selection.setSelection((Spannable) mText,
5294                                       Math.max(0, Math.min(start, len)),
5295                                       Math.max(0, Math.min(end, len)));
5296            }
5297        }
5298    }
5299
5300    /**
5301     * Sets the text to be displayed using a string resource identifier.
5302     *
5303     * @param resid the resource identifier of the string resource to be displayed
5304     *
5305     * @see #setText(CharSequence)
5306     *
5307     * @attr ref android.R.styleable#TextView_text
5308     */
5309    @android.view.RemotableViewMethod
5310    public final void setText(@StringRes int resid) {
5311        setText(getContext().getResources().getText(resid));
5312        mTextFromResource = true;
5313    }
5314
5315    /**
5316     * Sets the text to be displayed using a string resource identifier and the
5317     * {@link android.widget.TextView.BufferType}.
5318     * <p/>
5319     * When required, TextView will use {@link android.text.Spannable.Factory} to create final or
5320     * intermediate {@link Spannable Spannables}. Likewise it will use
5321     * {@link android.text.Editable.Factory} to create final or intermediate
5322     * {@link Editable Editables}.
5323     *
5324     * @param resid the resource identifier of the string resource to be displayed
5325     * @param type a {@link android.widget.TextView.BufferType} which defines whether the text is
5326     *              stored as a static text, styleable/spannable text, or editable text
5327     *
5328     * @see #setText(int)
5329     * @see #setText(CharSequence)
5330     * @see android.widget.TextView.BufferType
5331     * @see #setSpannableFactory(Spannable.Factory)
5332     * @see #setEditableFactory(Editable.Factory)
5333     *
5334     * @attr ref android.R.styleable#TextView_text
5335     * @attr ref android.R.styleable#TextView_bufferType
5336     */
5337    public final void setText(@StringRes int resid, BufferType type) {
5338        setText(getContext().getResources().getText(resid), type);
5339        mTextFromResource = true;
5340    }
5341
5342    /**
5343     * Sets the text to be displayed when the text of the TextView is empty.
5344     * Null means to use the normal empty text. The hint does not currently
5345     * participate in determining the size of the view.
5346     *
5347     * @attr ref android.R.styleable#TextView_hint
5348     */
5349    @android.view.RemotableViewMethod
5350    public final void setHint(CharSequence hint) {
5351        mHint = TextUtils.stringOrSpannedString(hint);
5352
5353        if (mLayout != null) {
5354            checkForRelayout();
5355        }
5356
5357        if (mText.length() == 0) {
5358            invalidate();
5359        }
5360
5361        // Invalidate display list if hint is currently used
5362        if (mEditor != null && mText.length() == 0 && mHint != null) {
5363            mEditor.invalidateTextDisplayList();
5364        }
5365    }
5366
5367    /**
5368     * Sets the text to be displayed when the text of the TextView is empty,
5369     * from a resource.
5370     *
5371     * @attr ref android.R.styleable#TextView_hint
5372     */
5373    @android.view.RemotableViewMethod
5374    public final void setHint(@StringRes int resid) {
5375        setHint(getContext().getResources().getText(resid));
5376    }
5377
5378    /**
5379     * Returns the hint that is displayed when the text of the TextView
5380     * is empty.
5381     *
5382     * @attr ref android.R.styleable#TextView_hint
5383     */
5384    @ViewDebug.CapturedViewProperty
5385    public CharSequence getHint() {
5386        return mHint;
5387    }
5388
5389    boolean isSingleLine() {
5390        return mSingleLine;
5391    }
5392
5393    private static boolean isMultilineInputType(int type) {
5394        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE))
5395                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
5396    }
5397
5398    /**
5399     * Removes the suggestion spans.
5400     */
5401    CharSequence removeSuggestionSpans(CharSequence text) {
5402        if (text instanceof Spanned) {
5403            Spannable spannable;
5404            if (text instanceof Spannable) {
5405                spannable = (Spannable) text;
5406            } else {
5407                spannable = mSpannableFactory.newSpannable(text);
5408                text = spannable;
5409            }
5410
5411            SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
5412            for (int i = 0; i < spans.length; i++) {
5413                spannable.removeSpan(spans[i]);
5414            }
5415        }
5416        return text;
5417    }
5418
5419    /**
5420     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
5421     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
5422     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
5423     * then a soft keyboard will not be displayed for this text view.
5424     *
5425     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
5426     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
5427     * type.
5428     *
5429     * @see #getInputType()
5430     * @see #setRawInputType(int)
5431     * @see android.text.InputType
5432     * @attr ref android.R.styleable#TextView_inputType
5433     */
5434    public void setInputType(int type) {
5435        final boolean wasPassword = isPasswordInputType(getInputType());
5436        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
5437        setInputType(type, false);
5438        final boolean isPassword = isPasswordInputType(type);
5439        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
5440        boolean forceUpdate = false;
5441        if (isPassword) {
5442            setTransformationMethod(PasswordTransformationMethod.getInstance());
5443            setTypefaceFromAttrs(null/* fontTypeface */, null /* fontFamily */, MONOSPACE, 0);
5444        } else if (isVisiblePassword) {
5445            if (mTransformation == PasswordTransformationMethod.getInstance()) {
5446                forceUpdate = true;
5447            }
5448            setTypefaceFromAttrs(null/* fontTypeface */, null /* fontFamily */, MONOSPACE, 0);
5449        } else if (wasPassword || wasVisiblePassword) {
5450            // not in password mode, clean up typeface and transformation
5451            setTypefaceFromAttrs(null/* fontTypeface */, null /* fontFamily */, -1, -1);
5452            if (mTransformation == PasswordTransformationMethod.getInstance()) {
5453                forceUpdate = true;
5454            }
5455        }
5456
5457        boolean singleLine = !isMultilineInputType(type);
5458
5459        // We need to update the single line mode if it has changed or we
5460        // were previously in password mode.
5461        if (mSingleLine != singleLine || forceUpdate) {
5462            // Change single line mode, but only change the transformation if
5463            // we are not in password mode.
5464            applySingleLine(singleLine, !isPassword, true);
5465        }
5466
5467        if (!isSuggestionsEnabled()) {
5468            mText = removeSuggestionSpans(mText);
5469        }
5470
5471        InputMethodManager imm = InputMethodManager.peekInstance();
5472        if (imm != null) imm.restartInput(this);
5473    }
5474
5475    /**
5476     * It would be better to rely on the input type for everything. A password inputType should have
5477     * a password transformation. We should hence use isPasswordInputType instead of this method.
5478     *
5479     * We should:
5480     * - Call setInputType in setKeyListener instead of changing the input type directly (which
5481     * would install the correct transformation).
5482     * - Refuse the installation of a non-password transformation in setTransformation if the input
5483     * type is password.
5484     *
5485     * However, this is like this for legacy reasons and we cannot break existing apps. This method
5486     * is useful since it matches what the user can see (obfuscated text or not).
5487     *
5488     * @return true if the current transformation method is of the password type.
5489     */
5490    boolean hasPasswordTransformationMethod() {
5491        return mTransformation instanceof PasswordTransformationMethod;
5492    }
5493
5494    private static boolean isPasswordInputType(int inputType) {
5495        final int variation =
5496                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
5497        return variation
5498                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
5499                || variation
5500                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
5501                || variation
5502                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
5503    }
5504
5505    private static boolean isVisiblePasswordInputType(int inputType) {
5506        final int variation =
5507                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
5508        return variation
5509                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
5510    }
5511
5512    /**
5513     * Directly change the content type integer of the text view, without
5514     * modifying any other state.
5515     * @see #setInputType(int)
5516     * @see android.text.InputType
5517     * @attr ref android.R.styleable#TextView_inputType
5518     */
5519    public void setRawInputType(int type) {
5520        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
5521        createEditorIfNeeded();
5522        mEditor.mInputType = type;
5523    }
5524
5525    private void setInputType(int type, boolean direct) {
5526        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
5527        KeyListener input;
5528        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
5529            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
5530            TextKeyListener.Capitalize cap;
5531            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
5532                cap = TextKeyListener.Capitalize.CHARACTERS;
5533            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
5534                cap = TextKeyListener.Capitalize.WORDS;
5535            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
5536                cap = TextKeyListener.Capitalize.SENTENCES;
5537            } else {
5538                cap = TextKeyListener.Capitalize.NONE;
5539            }
5540            input = TextKeyListener.getInstance(autotext, cap);
5541        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
5542            input = DigitsKeyListener.getInstance(
5543                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
5544                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
5545        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
5546            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
5547                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
5548                    input = DateKeyListener.getInstance();
5549                    break;
5550                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
5551                    input = TimeKeyListener.getInstance();
5552                    break;
5553                default:
5554                    input = DateTimeKeyListener.getInstance();
5555                    break;
5556            }
5557        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
5558            input = DialerKeyListener.getInstance();
5559        } else {
5560            input = TextKeyListener.getInstance();
5561        }
5562        setRawInputType(type);
5563        if (direct) {
5564            createEditorIfNeeded();
5565            mEditor.mKeyListener = input;
5566        } else {
5567            setKeyListenerOnly(input);
5568        }
5569    }
5570
5571    /**
5572     * Get the type of the editable content.
5573     *
5574     * @see #setInputType(int)
5575     * @see android.text.InputType
5576     */
5577    public int getInputType() {
5578        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
5579    }
5580
5581    /**
5582     * Change the editor type integer associated with the text view, which
5583     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
5584     * has focus.
5585     * @see #getImeOptions
5586     * @see android.view.inputmethod.EditorInfo
5587     * @attr ref android.R.styleable#TextView_imeOptions
5588     */
5589    public void setImeOptions(int imeOptions) {
5590        createEditorIfNeeded();
5591        mEditor.createInputContentTypeIfNeeded();
5592        mEditor.mInputContentType.imeOptions = imeOptions;
5593    }
5594
5595    /**
5596     * Get the type of the IME editor.
5597     *
5598     * @see #setImeOptions(int)
5599     * @see android.view.inputmethod.EditorInfo
5600     */
5601    public int getImeOptions() {
5602        return mEditor != null && mEditor.mInputContentType != null
5603                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
5604    }
5605
5606    /**
5607     * Change the custom IME action associated with the text view, which
5608     * will be reported to an IME with {@link EditorInfo#actionLabel}
5609     * and {@link EditorInfo#actionId} when it has focus.
5610     * @see #getImeActionLabel
5611     * @see #getImeActionId
5612     * @see android.view.inputmethod.EditorInfo
5613     * @attr ref android.R.styleable#TextView_imeActionLabel
5614     * @attr ref android.R.styleable#TextView_imeActionId
5615     */
5616    public void setImeActionLabel(CharSequence label, int actionId) {
5617        createEditorIfNeeded();
5618        mEditor.createInputContentTypeIfNeeded();
5619        mEditor.mInputContentType.imeActionLabel = label;
5620        mEditor.mInputContentType.imeActionId = actionId;
5621    }
5622
5623    /**
5624     * Get the IME action label previous set with {@link #setImeActionLabel}.
5625     *
5626     * @see #setImeActionLabel
5627     * @see android.view.inputmethod.EditorInfo
5628     */
5629    public CharSequence getImeActionLabel() {
5630        return mEditor != null && mEditor.mInputContentType != null
5631                ? mEditor.mInputContentType.imeActionLabel : null;
5632    }
5633
5634    /**
5635     * Get the IME action ID previous set with {@link #setImeActionLabel}.
5636     *
5637     * @see #setImeActionLabel
5638     * @see android.view.inputmethod.EditorInfo
5639     */
5640    public int getImeActionId() {
5641        return mEditor != null && mEditor.mInputContentType != null
5642                ? mEditor.mInputContentType.imeActionId : 0;
5643    }
5644
5645    /**
5646     * Set a special listener to be called when an action is performed
5647     * on the text view.  This will be called when the enter key is pressed,
5648     * or when an action supplied to the IME is selected by the user.  Setting
5649     * this means that the normal hard key event will not insert a newline
5650     * into the text view, even if it is multi-line; holding down the ALT
5651     * modifier will, however, allow the user to insert a newline character.
5652     */
5653    public void setOnEditorActionListener(OnEditorActionListener l) {
5654        createEditorIfNeeded();
5655        mEditor.createInputContentTypeIfNeeded();
5656        mEditor.mInputContentType.onEditorActionListener = l;
5657    }
5658
5659    /**
5660     * Called when an attached input method calls
5661     * {@link InputConnection#performEditorAction(int)
5662     * InputConnection.performEditorAction()}
5663     * for this text view.  The default implementation will call your action
5664     * listener supplied to {@link #setOnEditorActionListener}, or perform
5665     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
5666     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
5667     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
5668     * EditorInfo.IME_ACTION_DONE}.
5669     *
5670     * <p>For backwards compatibility, if no IME options have been set and the
5671     * text view would not normally advance focus on enter, then
5672     * the NEXT and DONE actions received here will be turned into an enter
5673     * key down/up pair to go through the normal key handling.
5674     *
5675     * @param actionCode The code of the action being performed.
5676     *
5677     * @see #setOnEditorActionListener
5678     */
5679    public void onEditorAction(int actionCode) {
5680        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
5681        if (ict != null) {
5682            if (ict.onEditorActionListener != null) {
5683                if (ict.onEditorActionListener.onEditorAction(this,
5684                        actionCode, null)) {
5685                    return;
5686                }
5687            }
5688
5689            // This is the handling for some default action.
5690            // Note that for backwards compatibility we don't do this
5691            // default handling if explicit ime options have not been given,
5692            // instead turning this into the normal enter key codes that an
5693            // app may be expecting.
5694            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
5695                View v = focusSearch(FOCUS_FORWARD);
5696                if (v != null) {
5697                    if (!v.requestFocus(FOCUS_FORWARD)) {
5698                        throw new IllegalStateException("focus search returned a view "
5699                                + "that wasn't able to take focus!");
5700                    }
5701                }
5702                return;
5703
5704            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
5705                View v = focusSearch(FOCUS_BACKWARD);
5706                if (v != null) {
5707                    if (!v.requestFocus(FOCUS_BACKWARD)) {
5708                        throw new IllegalStateException("focus search returned a view "
5709                                + "that wasn't able to take focus!");
5710                    }
5711                }
5712                return;
5713
5714            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
5715                InputMethodManager imm = InputMethodManager.peekInstance();
5716                if (imm != null && imm.isActive(this)) {
5717                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5718                }
5719                return;
5720            }
5721        }
5722
5723        ViewRootImpl viewRootImpl = getViewRootImpl();
5724        if (viewRootImpl != null) {
5725            long eventTime = SystemClock.uptimeMillis();
5726            viewRootImpl.dispatchKeyFromIme(
5727                    new KeyEvent(eventTime, eventTime,
5728                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
5729                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
5730                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
5731                    | KeyEvent.FLAG_EDITOR_ACTION));
5732            viewRootImpl.dispatchKeyFromIme(
5733                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
5734                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
5735                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
5736                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
5737                    | KeyEvent.FLAG_EDITOR_ACTION));
5738        }
5739    }
5740
5741    /**
5742     * Set the private content type of the text, which is the
5743     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
5744     * field that will be filled in when creating an input connection.
5745     *
5746     * @see #getPrivateImeOptions()
5747     * @see EditorInfo#privateImeOptions
5748     * @attr ref android.R.styleable#TextView_privateImeOptions
5749     */
5750    public void setPrivateImeOptions(String type) {
5751        createEditorIfNeeded();
5752        mEditor.createInputContentTypeIfNeeded();
5753        mEditor.mInputContentType.privateImeOptions = type;
5754    }
5755
5756    /**
5757     * Get the private type of the content.
5758     *
5759     * @see #setPrivateImeOptions(String)
5760     * @see EditorInfo#privateImeOptions
5761     */
5762    public String getPrivateImeOptions() {
5763        return mEditor != null && mEditor.mInputContentType != null
5764                ? mEditor.mInputContentType.privateImeOptions : null;
5765    }
5766
5767    /**
5768     * Set the extra input data of the text, which is the
5769     * {@link EditorInfo#extras TextBoxAttribute.extras}
5770     * Bundle that will be filled in when creating an input connection.  The
5771     * given integer is the resource identifier of an XML resource holding an
5772     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
5773     *
5774     * @see #getInputExtras(boolean)
5775     * @see EditorInfo#extras
5776     * @attr ref android.R.styleable#TextView_editorExtras
5777     */
5778    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
5779        createEditorIfNeeded();
5780        XmlResourceParser parser = getResources().getXml(xmlResId);
5781        mEditor.createInputContentTypeIfNeeded();
5782        mEditor.mInputContentType.extras = new Bundle();
5783        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
5784    }
5785
5786    /**
5787     * Retrieve the input extras currently associated with the text view, which
5788     * can be viewed as well as modified.
5789     *
5790     * @param create If true, the extras will be created if they don't already
5791     * exist.  Otherwise, null will be returned if none have been created.
5792     * @see #setInputExtras(int)
5793     * @see EditorInfo#extras
5794     * @attr ref android.R.styleable#TextView_editorExtras
5795     */
5796    public Bundle getInputExtras(boolean create) {
5797        if (mEditor == null && !create) return null;
5798        createEditorIfNeeded();
5799        if (mEditor.mInputContentType == null) {
5800            if (!create) return null;
5801            mEditor.createInputContentTypeIfNeeded();
5802        }
5803        if (mEditor.mInputContentType.extras == null) {
5804            if (!create) return null;
5805            mEditor.mInputContentType.extras = new Bundle();
5806        }
5807        return mEditor.mInputContentType.extras;
5808    }
5809
5810    /**
5811     * Change "hint" locales associated with the text view, which will be reported to an IME with
5812     * {@link EditorInfo#hintLocales} when it has focus.
5813     *
5814     * <p><strong>Note:</strong> If you want new "hint" to take effect immediately you need to
5815     * call {@link InputMethodManager#restartInput(View)}.</p>
5816     * @param hintLocales List of the languages that the user is supposed to switch to no matter
5817     * what input method subtype is currently used. Set {@code null} to clear the current "hint".
5818     * @see #getImeHintLocales()
5819     * @see android.view.inputmethod.EditorInfo#hintLocales
5820     */
5821    public void setImeHintLocales(@Nullable LocaleList hintLocales) {
5822        createEditorIfNeeded();
5823        mEditor.createInputContentTypeIfNeeded();
5824        mEditor.mInputContentType.imeHintLocales = hintLocales;
5825    }
5826
5827    /**
5828     * @return The current languages list "hint". {@code null} when no "hint" is available.
5829     * @see #setImeHintLocales(LocaleList)
5830     * @see android.view.inputmethod.EditorInfo#hintLocales
5831     */
5832    @Nullable
5833    public LocaleList getImeHintLocales() {
5834        if (mEditor == null) {
5835            return null;
5836        }
5837        if (mEditor.mInputContentType == null) {
5838            return null;
5839        }
5840        return mEditor.mInputContentType.imeHintLocales;
5841    }
5842
5843    /**
5844     * Returns the error message that was set to be displayed with
5845     * {@link #setError}, or <code>null</code> if no error was set
5846     * or if it the error was cleared by the widget after user input.
5847     */
5848    public CharSequence getError() {
5849        return mEditor == null ? null : mEditor.mError;
5850    }
5851
5852    /**
5853     * Sets the right-hand compound drawable of the TextView to the "error"
5854     * icon and sets an error message that will be displayed in a popup when
5855     * the TextView has focus.  The icon and error message will be reset to
5856     * null when any key events cause changes to the TextView's text.  If the
5857     * <code>error</code> is <code>null</code>, the error message and icon
5858     * will be cleared.
5859     */
5860    @android.view.RemotableViewMethod
5861    public void setError(CharSequence error) {
5862        if (error == null) {
5863            setError(null, null);
5864        } else {
5865            Drawable dr = getContext().getDrawable(
5866                    com.android.internal.R.drawable.indicator_input_error);
5867
5868            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5869            setError(error, dr);
5870        }
5871    }
5872
5873    /**
5874     * Sets the right-hand compound drawable of the TextView to the specified
5875     * icon and sets an error message that will be displayed in a popup when
5876     * the TextView has focus.  The icon and error message will be reset to
5877     * null when any key events cause changes to the TextView's text.  The
5878     * drawable must already have had {@link Drawable#setBounds} set on it.
5879     * If the <code>error</code> is <code>null</code>, the error message will
5880     * be cleared (and you should provide a <code>null</code> icon as well).
5881     */
5882    public void setError(CharSequence error, Drawable icon) {
5883        createEditorIfNeeded();
5884        mEditor.setError(error, icon);
5885        notifyViewAccessibilityStateChangedIfNeeded(
5886                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5887    }
5888
5889    @Override
5890    protected boolean setFrame(int l, int t, int r, int b) {
5891        boolean result = super.setFrame(l, t, r, b);
5892
5893        if (mEditor != null) mEditor.setFrame();
5894
5895        restartMarqueeIfNeeded();
5896
5897        return result;
5898    }
5899
5900    private void restartMarqueeIfNeeded() {
5901        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5902            mRestartMarquee = false;
5903            startMarquee();
5904        }
5905    }
5906
5907    /**
5908     * Sets the list of input filters that will be used if the buffer is
5909     * Editable. Has no effect otherwise.
5910     *
5911     * @attr ref android.R.styleable#TextView_maxLength
5912     */
5913    public void setFilters(InputFilter[] filters) {
5914        if (filters == null) {
5915            throw new IllegalArgumentException();
5916        }
5917
5918        mFilters = filters;
5919
5920        if (mText instanceof Editable) {
5921            setFilters((Editable) mText, filters);
5922        }
5923    }
5924
5925    /**
5926     * Sets the list of input filters on the specified Editable,
5927     * and includes mInput in the list if it is an InputFilter.
5928     */
5929    private void setFilters(Editable e, InputFilter[] filters) {
5930        if (mEditor != null) {
5931            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5932            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5933            int num = 0;
5934            if (undoFilter) num++;
5935            if (keyFilter) num++;
5936            if (num > 0) {
5937                InputFilter[] nf = new InputFilter[filters.length + num];
5938
5939                System.arraycopy(filters, 0, nf, 0, filters.length);
5940                num = 0;
5941                if (undoFilter) {
5942                    nf[filters.length] = mEditor.mUndoInputFilter;
5943                    num++;
5944                }
5945                if (keyFilter) {
5946                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5947                }
5948
5949                e.setFilters(nf);
5950                return;
5951            }
5952        }
5953        e.setFilters(filters);
5954    }
5955
5956    /**
5957     * Returns the current list of input filters.
5958     *
5959     * @attr ref android.R.styleable#TextView_maxLength
5960     */
5961    public InputFilter[] getFilters() {
5962        return mFilters;
5963    }
5964
5965    /////////////////////////////////////////////////////////////////////////
5966
5967    private int getBoxHeight(Layout l) {
5968        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5969        int padding = (l == mHintLayout)
5970                ? getCompoundPaddingTop() + getCompoundPaddingBottom()
5971                : getExtendedPaddingTop() + getExtendedPaddingBottom();
5972        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5973    }
5974
5975    int getVerticalOffset(boolean forceNormal) {
5976        int voffset = 0;
5977        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5978
5979        Layout l = mLayout;
5980        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5981            l = mHintLayout;
5982        }
5983
5984        if (gravity != Gravity.TOP) {
5985            int boxht = getBoxHeight(l);
5986            int textht = l.getHeight();
5987
5988            if (textht < boxht) {
5989                if (gravity == Gravity.BOTTOM) {
5990                    voffset = boxht - textht;
5991                } else { // (gravity == Gravity.CENTER_VERTICAL)
5992                    voffset = (boxht - textht) >> 1;
5993                }
5994            }
5995        }
5996        return voffset;
5997    }
5998
5999    private int getBottomVerticalOffset(boolean forceNormal) {
6000        int voffset = 0;
6001        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
6002
6003        Layout l = mLayout;
6004        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
6005            l = mHintLayout;
6006        }
6007
6008        if (gravity != Gravity.BOTTOM) {
6009            int boxht = getBoxHeight(l);
6010            int textht = l.getHeight();
6011
6012            if (textht < boxht) {
6013                if (gravity == Gravity.TOP) {
6014                    voffset = boxht - textht;
6015                } else { // (gravity == Gravity.CENTER_VERTICAL)
6016                    voffset = (boxht - textht) >> 1;
6017                }
6018            }
6019        }
6020        return voffset;
6021    }
6022
6023    void invalidateCursorPath() {
6024        if (mHighlightPathBogus) {
6025            invalidateCursor();
6026        } else {
6027            final int horizontalPadding = getCompoundPaddingLeft();
6028            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
6029
6030            if (mEditor.mCursorCount == 0) {
6031                synchronized (TEMP_RECTF) {
6032                    /*
6033                     * The reason for this concern about the thickness of the
6034                     * cursor and doing the floor/ceil on the coordinates is that
6035                     * some EditTexts (notably textfields in the Browser) have
6036                     * anti-aliased text where not all the characters are
6037                     * necessarily at integer-multiple locations.  This should
6038                     * make sure the entire cursor gets invalidated instead of
6039                     * sometimes missing half a pixel.
6040                     */
6041                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
6042                    if (thick < 1.0f) {
6043                        thick = 1.0f;
6044                    }
6045
6046                    thick /= 2.0f;
6047
6048                    // mHighlightPath is guaranteed to be non null at that point.
6049                    mHighlightPath.computeBounds(TEMP_RECTF, false);
6050
6051                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
6052                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
6053                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
6054                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
6055                }
6056            } else {
6057                for (int i = 0; i < mEditor.mCursorCount; i++) {
6058                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
6059                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
6060                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
6061                }
6062            }
6063        }
6064    }
6065
6066    void invalidateCursor() {
6067        int where = getSelectionEnd();
6068
6069        invalidateCursor(where, where, where);
6070    }
6071
6072    private void invalidateCursor(int a, int b, int c) {
6073        if (a >= 0 || b >= 0 || c >= 0) {
6074            int start = Math.min(Math.min(a, b), c);
6075            int end = Math.max(Math.max(a, b), c);
6076            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
6077        }
6078    }
6079
6080    /**
6081     * Invalidates the region of text enclosed between the start and end text offsets.
6082     */
6083    void invalidateRegion(int start, int end, boolean invalidateCursor) {
6084        if (mLayout == null) {
6085            invalidate();
6086        } else {
6087            int lineStart = mLayout.getLineForOffset(start);
6088            int top = mLayout.getLineTop(lineStart);
6089
6090            // This is ridiculous, but the descent from the line above
6091            // can hang down into the line we really want to redraw,
6092            // so we have to invalidate part of the line above to make
6093            // sure everything that needs to be redrawn really is.
6094            // (But not the whole line above, because that would cause
6095            // the same problem with the descenders on the line above it!)
6096            if (lineStart > 0) {
6097                top -= mLayout.getLineDescent(lineStart - 1);
6098            }
6099
6100            int lineEnd;
6101
6102            if (start == end) {
6103                lineEnd = lineStart;
6104            } else {
6105                lineEnd = mLayout.getLineForOffset(end);
6106            }
6107
6108            int bottom = mLayout.getLineBottom(lineEnd);
6109
6110            // mEditor can be null in case selection is set programmatically.
6111            if (invalidateCursor && mEditor != null) {
6112                for (int i = 0; i < mEditor.mCursorCount; i++) {
6113                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
6114                    top = Math.min(top, bounds.top);
6115                    bottom = Math.max(bottom, bounds.bottom);
6116                }
6117            }
6118
6119            final int compoundPaddingLeft = getCompoundPaddingLeft();
6120            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
6121
6122            int left, right;
6123            if (lineStart == lineEnd && !invalidateCursor) {
6124                left = (int) mLayout.getPrimaryHorizontal(start);
6125                right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
6126                left += compoundPaddingLeft;
6127                right += compoundPaddingLeft;
6128            } else {
6129                // Rectangle bounding box when the region spans several lines
6130                left = compoundPaddingLeft;
6131                right = getWidth() - getCompoundPaddingRight();
6132            }
6133
6134            invalidate(mScrollX + left, verticalPadding + top,
6135                    mScrollX + right, verticalPadding + bottom);
6136        }
6137    }
6138
6139    private void registerForPreDraw() {
6140        if (!mPreDrawRegistered) {
6141            getViewTreeObserver().addOnPreDrawListener(this);
6142            mPreDrawRegistered = true;
6143        }
6144    }
6145
6146    private void unregisterForPreDraw() {
6147        getViewTreeObserver().removeOnPreDrawListener(this);
6148        mPreDrawRegistered = false;
6149        mPreDrawListenerDetached = false;
6150    }
6151
6152    /**
6153     * {@inheritDoc}
6154     */
6155    @Override
6156    public boolean onPreDraw() {
6157        if (mLayout == null) {
6158            assumeLayout();
6159        }
6160
6161        if (mMovement != null) {
6162            /* This code also provides auto-scrolling when a cursor is moved using a
6163             * CursorController (insertion point or selection limits).
6164             * For selection, ensure start or end is visible depending on controller's state.
6165             */
6166            int curs = getSelectionEnd();
6167            // Do not create the controller if it is not already created.
6168            if (mEditor != null && mEditor.mSelectionModifierCursorController != null
6169                    && mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
6170                curs = getSelectionStart();
6171            }
6172
6173            /*
6174             * TODO: This should really only keep the end in view if
6175             * it already was before the text changed.  I'm not sure
6176             * of a good way to tell from here if it was.
6177             */
6178            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6179                curs = mText.length();
6180            }
6181
6182            if (curs >= 0) {
6183                bringPointIntoView(curs);
6184            }
6185        } else {
6186            bringTextIntoView();
6187        }
6188
6189        // This has to be checked here since:
6190        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
6191        //   a screen rotation) since layout is not yet initialized at that point.
6192        if (mEditor != null && mEditor.mCreatedWithASelection) {
6193            mEditor.refreshTextActionMode();
6194            mEditor.mCreatedWithASelection = false;
6195        }
6196
6197        unregisterForPreDraw();
6198
6199        return true;
6200    }
6201
6202    @Override
6203    protected void onAttachedToWindow() {
6204        super.onAttachedToWindow();
6205
6206        if (mEditor != null) mEditor.onAttachedToWindow();
6207
6208        if (mPreDrawListenerDetached) {
6209            getViewTreeObserver().addOnPreDrawListener(this);
6210            mPreDrawListenerDetached = false;
6211        }
6212    }
6213
6214    /** @hide */
6215    @Override
6216    protected void onDetachedFromWindowInternal() {
6217        if (mPreDrawRegistered) {
6218            getViewTreeObserver().removeOnPreDrawListener(this);
6219            mPreDrawListenerDetached = true;
6220        }
6221
6222        resetResolvedDrawables();
6223
6224        if (mEditor != null) mEditor.onDetachedFromWindow();
6225
6226        super.onDetachedFromWindowInternal();
6227    }
6228
6229    @Override
6230    public void onScreenStateChanged(int screenState) {
6231        super.onScreenStateChanged(screenState);
6232        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
6233    }
6234
6235    @Override
6236    protected boolean isPaddingOffsetRequired() {
6237        return mShadowRadius != 0 || mDrawables != null;
6238    }
6239
6240    @Override
6241    protected int getLeftPaddingOffset() {
6242        return getCompoundPaddingLeft() - mPaddingLeft
6243                + (int) Math.min(0, mShadowDx - mShadowRadius);
6244    }
6245
6246    @Override
6247    protected int getTopPaddingOffset() {
6248        return (int) Math.min(0, mShadowDy - mShadowRadius);
6249    }
6250
6251    @Override
6252    protected int getBottomPaddingOffset() {
6253        return (int) Math.max(0, mShadowDy + mShadowRadius);
6254    }
6255
6256    @Override
6257    protected int getRightPaddingOffset() {
6258        return -(getCompoundPaddingRight() - mPaddingRight)
6259                + (int) Math.max(0, mShadowDx + mShadowRadius);
6260    }
6261
6262    @Override
6263    protected boolean verifyDrawable(@NonNull Drawable who) {
6264        final boolean verified = super.verifyDrawable(who);
6265        if (!verified && mDrawables != null) {
6266            for (Drawable dr : mDrawables.mShowing) {
6267                if (who == dr) {
6268                    return true;
6269                }
6270            }
6271        }
6272        return verified;
6273    }
6274
6275    @Override
6276    public void jumpDrawablesToCurrentState() {
6277        super.jumpDrawablesToCurrentState();
6278        if (mDrawables != null) {
6279            for (Drawable dr : mDrawables.mShowing) {
6280                if (dr != null) {
6281                    dr.jumpToCurrentState();
6282                }
6283            }
6284        }
6285    }
6286
6287    @Override
6288    public void invalidateDrawable(@NonNull Drawable drawable) {
6289        boolean handled = false;
6290
6291        if (verifyDrawable(drawable)) {
6292            final Rect dirty = drawable.getBounds();
6293            int scrollX = mScrollX;
6294            int scrollY = mScrollY;
6295
6296            // IMPORTANT: The coordinates below are based on the coordinates computed
6297            // for each compound drawable in onDraw(). Make sure to update each section
6298            // accordingly.
6299            final TextView.Drawables drawables = mDrawables;
6300            if (drawables != null) {
6301                if (drawable == drawables.mShowing[Drawables.LEFT]) {
6302                    final int compoundPaddingTop = getCompoundPaddingTop();
6303                    final int compoundPaddingBottom = getCompoundPaddingBottom();
6304                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
6305
6306                    scrollX += mPaddingLeft;
6307                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
6308                    handled = true;
6309                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
6310                    final int compoundPaddingTop = getCompoundPaddingTop();
6311                    final int compoundPaddingBottom = getCompoundPaddingBottom();
6312                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
6313
6314                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
6315                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
6316                    handled = true;
6317                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
6318                    final int compoundPaddingLeft = getCompoundPaddingLeft();
6319                    final int compoundPaddingRight = getCompoundPaddingRight();
6320                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
6321
6322                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
6323                    scrollY += mPaddingTop;
6324                    handled = true;
6325                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
6326                    final int compoundPaddingLeft = getCompoundPaddingLeft();
6327                    final int compoundPaddingRight = getCompoundPaddingRight();
6328                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
6329
6330                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
6331                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
6332                    handled = true;
6333                }
6334            }
6335
6336            if (handled) {
6337                invalidate(dirty.left + scrollX, dirty.top + scrollY,
6338                        dirty.right + scrollX, dirty.bottom + scrollY);
6339            }
6340        }
6341
6342        if (!handled) {
6343            super.invalidateDrawable(drawable);
6344        }
6345    }
6346
6347    @Override
6348    public boolean hasOverlappingRendering() {
6349        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
6350        return ((getBackground() != null && getBackground().getCurrent() != null)
6351                || mText instanceof Spannable || hasSelection()
6352                || isHorizontalFadingEdgeEnabled());
6353    }
6354
6355    /**
6356     *
6357     * Returns the state of the {@code textIsSelectable} flag (See
6358     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
6359     * to allow users to select and copy text in a non-editable TextView, the content of an
6360     * {@link EditText} can always be selected, independently of the value of this flag.
6361     * <p>
6362     *
6363     * @return True if the text displayed in this TextView can be selected by the user.
6364     *
6365     * @attr ref android.R.styleable#TextView_textIsSelectable
6366     */
6367    public boolean isTextSelectable() {
6368        return mEditor == null ? false : mEditor.mTextIsSelectable;
6369    }
6370
6371    /**
6372     * Sets whether the content of this view is selectable by the user. The default is
6373     * {@code false}, meaning that the content is not selectable.
6374     * <p>
6375     * When you use a TextView to display a useful piece of information to the user (such as a
6376     * contact's address), make it selectable, so that the user can select and copy its
6377     * content. You can also use set the XML attribute
6378     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
6379     * <p>
6380     * When you call this method to set the value of {@code textIsSelectable}, it sets
6381     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
6382     * and {@code longClickable} to the same value. These flags correspond to the attributes
6383     * {@link android.R.styleable#View_focusable android:focusable},
6384     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
6385     * {@link android.R.styleable#View_clickable android:clickable}, and
6386     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
6387     * flags to a state you had set previously, call one or more of the following methods:
6388     * {@link #setFocusable(boolean) setFocusable()},
6389     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
6390     * {@link #setClickable(boolean) setClickable()} or
6391     * {@link #setLongClickable(boolean) setLongClickable()}.
6392     *
6393     * @param selectable Whether the content of this TextView should be selectable.
6394     */
6395    public void setTextIsSelectable(boolean selectable) {
6396        if (!selectable && mEditor == null) return; // false is default value with no edit data
6397
6398        createEditorIfNeeded();
6399        if (mEditor.mTextIsSelectable == selectable) return;
6400
6401        mEditor.mTextIsSelectable = selectable;
6402        setFocusableInTouchMode(selectable);
6403        setFocusable(FOCUSABLE_AUTO);
6404        setClickable(selectable);
6405        setLongClickable(selectable);
6406
6407        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
6408
6409        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
6410        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
6411
6412        // Called by setText above, but safer in case of future code changes
6413        mEditor.prepareCursorControllers();
6414    }
6415
6416    @Override
6417    protected int[] onCreateDrawableState(int extraSpace) {
6418        final int[] drawableState;
6419
6420        if (mSingleLine) {
6421            drawableState = super.onCreateDrawableState(extraSpace);
6422        } else {
6423            drawableState = super.onCreateDrawableState(extraSpace + 1);
6424            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
6425        }
6426
6427        if (isTextSelectable()) {
6428            // Disable pressed state, which was introduced when TextView was made clickable.
6429            // Prevents text color change.
6430            // setClickable(false) would have a similar effect, but it also disables focus changes
6431            // and long press actions, which are both needed by text selection.
6432            final int length = drawableState.length;
6433            for (int i = 0; i < length; i++) {
6434                if (drawableState[i] == R.attr.state_pressed) {
6435                    final int[] nonPressedState = new int[length - 1];
6436                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
6437                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
6438                    return nonPressedState;
6439                }
6440            }
6441        }
6442
6443        return drawableState;
6444    }
6445
6446    private Path getUpdatedHighlightPath() {
6447        Path highlight = null;
6448        Paint highlightPaint = mHighlightPaint;
6449
6450        final int selStart = getSelectionStart();
6451        final int selEnd = getSelectionEnd();
6452        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
6453            if (selStart == selEnd) {
6454                if (mEditor != null && mEditor.isCursorVisible()
6455                        && (SystemClock.uptimeMillis() - mEditor.mShowCursor)
6456                        % (2 * Editor.BLINK) < Editor.BLINK) {
6457                    if (mHighlightPathBogus) {
6458                        if (mHighlightPath == null) mHighlightPath = new Path();
6459                        mHighlightPath.reset();
6460                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
6461                        mEditor.updateCursorsPositions();
6462                        mHighlightPathBogus = false;
6463                    }
6464
6465                    // XXX should pass to skin instead of drawing directly
6466                    highlightPaint.setColor(mCurTextColor);
6467                    highlightPaint.setStyle(Paint.Style.STROKE);
6468                    highlight = mHighlightPath;
6469                }
6470            } else {
6471                if (mHighlightPathBogus) {
6472                    if (mHighlightPath == null) mHighlightPath = new Path();
6473                    mHighlightPath.reset();
6474                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
6475                    mHighlightPathBogus = false;
6476                }
6477
6478                // XXX should pass to skin instead of drawing directly
6479                highlightPaint.setColor(mHighlightColor);
6480                highlightPaint.setStyle(Paint.Style.FILL);
6481
6482                highlight = mHighlightPath;
6483            }
6484        }
6485        return highlight;
6486    }
6487
6488    /**
6489     * @hide
6490     */
6491    public int getHorizontalOffsetForDrawables() {
6492        return 0;
6493    }
6494
6495    @Override
6496    protected void onDraw(Canvas canvas) {
6497        restartMarqueeIfNeeded();
6498
6499        // Draw the background for this view
6500        super.onDraw(canvas);
6501
6502        final int compoundPaddingLeft = getCompoundPaddingLeft();
6503        final int compoundPaddingTop = getCompoundPaddingTop();
6504        final int compoundPaddingRight = getCompoundPaddingRight();
6505        final int compoundPaddingBottom = getCompoundPaddingBottom();
6506        final int scrollX = mScrollX;
6507        final int scrollY = mScrollY;
6508        final int right = mRight;
6509        final int left = mLeft;
6510        final int bottom = mBottom;
6511        final int top = mTop;
6512        final boolean isLayoutRtl = isLayoutRtl();
6513        final int offset = getHorizontalOffsetForDrawables();
6514        final int leftOffset = isLayoutRtl ? 0 : offset;
6515        final int rightOffset = isLayoutRtl ? offset : 0;
6516
6517        final Drawables dr = mDrawables;
6518        if (dr != null) {
6519            /*
6520             * Compound, not extended, because the icon is not clipped
6521             * if the text height is smaller.
6522             */
6523
6524            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
6525            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
6526
6527            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
6528            // Make sure to update invalidateDrawable() when changing this code.
6529            if (dr.mShowing[Drawables.LEFT] != null) {
6530                canvas.save();
6531                canvas.translate(scrollX + mPaddingLeft + leftOffset,
6532                        scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightLeft) / 2);
6533                dr.mShowing[Drawables.LEFT].draw(canvas);
6534                canvas.restore();
6535            }
6536
6537            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
6538            // Make sure to update invalidateDrawable() when changing this code.
6539            if (dr.mShowing[Drawables.RIGHT] != null) {
6540                canvas.save();
6541                canvas.translate(scrollX + right - left - mPaddingRight
6542                        - dr.mDrawableSizeRight - rightOffset,
6543                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
6544                dr.mShowing[Drawables.RIGHT].draw(canvas);
6545                canvas.restore();
6546            }
6547
6548            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
6549            // Make sure to update invalidateDrawable() when changing this code.
6550            if (dr.mShowing[Drawables.TOP] != null) {
6551                canvas.save();
6552                canvas.translate(scrollX + compoundPaddingLeft
6553                        + (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
6554                dr.mShowing[Drawables.TOP].draw(canvas);
6555                canvas.restore();
6556            }
6557
6558            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
6559            // Make sure to update invalidateDrawable() when changing this code.
6560            if (dr.mShowing[Drawables.BOTTOM] != null) {
6561                canvas.save();
6562                canvas.translate(scrollX + compoundPaddingLeft
6563                        + (hspace - dr.mDrawableWidthBottom) / 2,
6564                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
6565                dr.mShowing[Drawables.BOTTOM].draw(canvas);
6566                canvas.restore();
6567            }
6568        }
6569
6570        int color = mCurTextColor;
6571
6572        if (mLayout == null) {
6573            assumeLayout();
6574        }
6575
6576        Layout layout = mLayout;
6577
6578        if (mHint != null && mText.length() == 0) {
6579            if (mHintTextColor != null) {
6580                color = mCurHintTextColor;
6581            }
6582
6583            layout = mHintLayout;
6584        }
6585
6586        mTextPaint.setColor(color);
6587        mTextPaint.drawableState = getDrawableState();
6588
6589        canvas.save();
6590        /*  Would be faster if we didn't have to do this. Can we chop the
6591            (displayable) text so that we don't need to do this ever?
6592        */
6593
6594        int extendedPaddingTop = getExtendedPaddingTop();
6595        int extendedPaddingBottom = getExtendedPaddingBottom();
6596
6597        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
6598        final int maxScrollY = mLayout.getHeight() - vspace;
6599
6600        float clipLeft = compoundPaddingLeft + scrollX;
6601        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
6602        float clipRight = right - left - getCompoundPaddingRight() + scrollX;
6603        float clipBottom = bottom - top + scrollY
6604                - ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
6605
6606        if (mShadowRadius != 0) {
6607            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
6608            clipRight += Math.max(0, mShadowDx + mShadowRadius);
6609
6610            clipTop += Math.min(0, mShadowDy - mShadowRadius);
6611            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
6612        }
6613
6614        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
6615
6616        int voffsetText = 0;
6617        int voffsetCursor = 0;
6618
6619        // translate in by our padding
6620        /* shortcircuit calling getVerticaOffset() */
6621        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6622            voffsetText = getVerticalOffset(false);
6623            voffsetCursor = getVerticalOffset(true);
6624        }
6625        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
6626
6627        final int layoutDirection = getLayoutDirection();
6628        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
6629        if (isMarqueeFadeEnabled()) {
6630            if (!mSingleLine && getLineCount() == 1 && canMarquee()
6631                    && (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
6632                final int width = mRight - mLeft;
6633                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
6634                final float dx = mLayout.getLineRight(0) - (width - padding);
6635                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
6636            }
6637
6638            if (mMarquee != null && mMarquee.isRunning()) {
6639                final float dx = -mMarquee.getScroll();
6640                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
6641            }
6642        }
6643
6644        final int cursorOffsetVertical = voffsetCursor - voffsetText;
6645
6646        Path highlight = getUpdatedHighlightPath();
6647        if (mEditor != null) {
6648            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
6649        } else {
6650            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
6651        }
6652
6653        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
6654            final float dx = mMarquee.getGhostOffset();
6655            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
6656            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
6657        }
6658
6659        canvas.restore();
6660    }
6661
6662    @Override
6663    public void getFocusedRect(Rect r) {
6664        if (mLayout == null) {
6665            super.getFocusedRect(r);
6666            return;
6667        }
6668
6669        int selEnd = getSelectionEnd();
6670        if (selEnd < 0) {
6671            super.getFocusedRect(r);
6672            return;
6673        }
6674
6675        int selStart = getSelectionStart();
6676        if (selStart < 0 || selStart >= selEnd) {
6677            int line = mLayout.getLineForOffset(selEnd);
6678            r.top = mLayout.getLineTop(line);
6679            r.bottom = mLayout.getLineBottom(line);
6680            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
6681            r.right = r.left + 4;
6682        } else {
6683            int lineStart = mLayout.getLineForOffset(selStart);
6684            int lineEnd = mLayout.getLineForOffset(selEnd);
6685            r.top = mLayout.getLineTop(lineStart);
6686            r.bottom = mLayout.getLineBottom(lineEnd);
6687            if (lineStart == lineEnd) {
6688                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
6689                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
6690            } else {
6691                // Selection extends across multiple lines -- make the focused
6692                // rect cover the entire width.
6693                if (mHighlightPathBogus) {
6694                    if (mHighlightPath == null) mHighlightPath = new Path();
6695                    mHighlightPath.reset();
6696                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
6697                    mHighlightPathBogus = false;
6698                }
6699                synchronized (TEMP_RECTF) {
6700                    mHighlightPath.computeBounds(TEMP_RECTF, true);
6701                    r.left = (int) TEMP_RECTF.left - 1;
6702                    r.right = (int) TEMP_RECTF.right + 1;
6703                }
6704            }
6705        }
6706
6707        // Adjust for padding and gravity.
6708        int paddingLeft = getCompoundPaddingLeft();
6709        int paddingTop = getExtendedPaddingTop();
6710        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6711            paddingTop += getVerticalOffset(false);
6712        }
6713        r.offset(paddingLeft, paddingTop);
6714        int paddingBottom = getExtendedPaddingBottom();
6715        r.bottom += paddingBottom;
6716    }
6717
6718    /**
6719     * Return the number of lines of text, or 0 if the internal Layout has not
6720     * been built.
6721     */
6722    public int getLineCount() {
6723        return mLayout != null ? mLayout.getLineCount() : 0;
6724    }
6725
6726    /**
6727     * Return the baseline for the specified line (0...getLineCount() - 1)
6728     * If bounds is not null, return the top, left, right, bottom extents
6729     * of the specified line in it. If the internal Layout has not been built,
6730     * return 0 and set bounds to (0, 0, 0, 0)
6731     * @param line which line to examine (0..getLineCount() - 1)
6732     * @param bounds Optional. If not null, it returns the extent of the line
6733     * @return the Y-coordinate of the baseline
6734     */
6735    public int getLineBounds(int line, Rect bounds) {
6736        if (mLayout == null) {
6737            if (bounds != null) {
6738                bounds.set(0, 0, 0, 0);
6739            }
6740            return 0;
6741        } else {
6742            int baseline = mLayout.getLineBounds(line, bounds);
6743
6744            int voffset = getExtendedPaddingTop();
6745            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6746                voffset += getVerticalOffset(true);
6747            }
6748            if (bounds != null) {
6749                bounds.offset(getCompoundPaddingLeft(), voffset);
6750            }
6751            return baseline + voffset;
6752        }
6753    }
6754
6755    @Override
6756    public int getBaseline() {
6757        if (mLayout == null) {
6758            return super.getBaseline();
6759        }
6760
6761        return getBaselineOffset() + mLayout.getLineBaseline(0);
6762    }
6763
6764    int getBaselineOffset() {
6765        int voffset = 0;
6766        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6767            voffset = getVerticalOffset(true);
6768        }
6769
6770        if (isLayoutModeOptical(mParent)) {
6771            voffset -= getOpticalInsets().top;
6772        }
6773
6774        return getExtendedPaddingTop() + voffset;
6775    }
6776
6777    /**
6778     * @hide
6779     */
6780    @Override
6781    protected int getFadeTop(boolean offsetRequired) {
6782        if (mLayout == null) return 0;
6783
6784        int voffset = 0;
6785        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6786            voffset = getVerticalOffset(true);
6787        }
6788
6789        if (offsetRequired) voffset += getTopPaddingOffset();
6790
6791        return getExtendedPaddingTop() + voffset;
6792    }
6793
6794    /**
6795     * @hide
6796     */
6797    @Override
6798    protected int getFadeHeight(boolean offsetRequired) {
6799        return mLayout != null ? mLayout.getHeight() : 0;
6800    }
6801
6802    @Override
6803    public PointerIcon onResolvePointerIcon(MotionEvent event, int pointerIndex) {
6804        if (mText instanceof Spannable && mLinksClickable) {
6805            final float x = event.getX(pointerIndex);
6806            final float y = event.getY(pointerIndex);
6807            final int offset = getOffsetForPosition(x, y);
6808            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
6809                    ClickableSpan.class);
6810            if (clickables.length > 0) {
6811                return PointerIcon.getSystemIcon(mContext, PointerIcon.TYPE_HAND);
6812            }
6813        }
6814        if (isTextSelectable() || isTextEditable()) {
6815            return PointerIcon.getSystemIcon(mContext, PointerIcon.TYPE_TEXT);
6816        }
6817        return super.onResolvePointerIcon(event, pointerIndex);
6818    }
6819
6820    @Override
6821    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
6822        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
6823        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
6824        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
6825        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
6826            return true;
6827        }
6828        return super.onKeyPreIme(keyCode, event);
6829    }
6830
6831    /**
6832     * @hide
6833     */
6834    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
6835        // Do nothing unless mEditor is in text action mode.
6836        if (mEditor == null || mEditor.getTextActionMode() == null) {
6837            return false;
6838        }
6839
6840        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
6841            KeyEvent.DispatcherState state = getKeyDispatcherState();
6842            if (state != null) {
6843                state.startTracking(event, this);
6844            }
6845            return true;
6846        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6847            KeyEvent.DispatcherState state = getKeyDispatcherState();
6848            if (state != null) {
6849                state.handleUpEvent(event);
6850            }
6851            if (event.isTracking() && !event.isCanceled()) {
6852                stopTextActionMode();
6853                return true;
6854            }
6855        }
6856        return false;
6857    }
6858
6859    @Override
6860    public boolean onKeyDown(int keyCode, KeyEvent event) {
6861        final int which = doKeyDown(keyCode, event, null);
6862        if (which == KEY_EVENT_NOT_HANDLED) {
6863            return super.onKeyDown(keyCode, event);
6864        }
6865
6866        return true;
6867    }
6868
6869    @Override
6870    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6871        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6872        final int which = doKeyDown(keyCode, down, event);
6873        if (which == KEY_EVENT_NOT_HANDLED) {
6874            // Go through default dispatching.
6875            return super.onKeyMultiple(keyCode, repeatCount, event);
6876        }
6877        if (which == KEY_EVENT_HANDLED) {
6878            // Consumed the whole thing.
6879            return true;
6880        }
6881
6882        repeatCount--;
6883
6884        // We are going to dispatch the remaining events to either the input
6885        // or movement method.  To do this, we will just send a repeated stream
6886        // of down and up events until we have done the complete repeatCount.
6887        // It would be nice if those interfaces had an onKeyMultiple() method,
6888        // but adding that is a more complicated change.
6889        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6890        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6891            // mEditor and mEditor.mInput are not null from doKeyDown
6892            mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, up);
6893            while (--repeatCount > 0) {
6894                mEditor.mKeyListener.onKeyDown(this, (Editable) mText, keyCode, down);
6895                mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, up);
6896            }
6897            hideErrorIfUnchanged();
6898
6899        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6900            // mMovement is not null from doKeyDown
6901            mMovement.onKeyUp(this, (Spannable) mText, keyCode, up);
6902            while (--repeatCount > 0) {
6903                mMovement.onKeyDown(this, (Spannable) mText, keyCode, down);
6904                mMovement.onKeyUp(this, (Spannable) mText, keyCode, up);
6905            }
6906        }
6907
6908        return true;
6909    }
6910
6911    /**
6912     * Returns true if pressing ENTER in this field advances focus instead
6913     * of inserting the character.  This is true mostly in single-line fields,
6914     * but also in mail addresses and subjects which will display on multiple
6915     * lines but where it doesn't make sense to insert newlines.
6916     */
6917    private boolean shouldAdvanceFocusOnEnter() {
6918        if (getKeyListener() == null) {
6919            return false;
6920        }
6921
6922        if (mSingleLine) {
6923            return true;
6924        }
6925
6926        if (mEditor != null
6927                && (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS)
6928                        == EditorInfo.TYPE_CLASS_TEXT) {
6929            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6930            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6931                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6932                return true;
6933            }
6934        }
6935
6936        return false;
6937    }
6938
6939    /**
6940     * Returns true if pressing TAB in this field advances focus instead
6941     * of inserting the character.  Insert tabs only in multi-line editors.
6942     */
6943    private boolean shouldAdvanceFocusOnTab() {
6944        if (getKeyListener() != null && !mSingleLine && mEditor != null
6945                && (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS)
6946                        == EditorInfo.TYPE_CLASS_TEXT) {
6947            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6948            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6949                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6950                return false;
6951            }
6952        }
6953        return true;
6954    }
6955
6956    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6957        if (!isEnabled()) {
6958            return KEY_EVENT_NOT_HANDLED;
6959        }
6960
6961        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6962        // While this shouldn't be necessary because any time we're preventing default movement we
6963        // should be restricting the focus to remain within this view, thus we'll also receive
6964        // the key up event, occasionally key up events will get dropped and we don't want to
6965        // prevent the user from traversing out of this on the next key down.
6966        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6967            mPreventDefaultMovement = false;
6968        }
6969
6970        switch (keyCode) {
6971            case KeyEvent.KEYCODE_ENTER:
6972                if (event.hasNoModifiers()) {
6973                    // When mInputContentType is set, we know that we are
6974                    // running in a "modern" cupcake environment, so don't need
6975                    // to worry about the application trying to capture
6976                    // enter key events.
6977                    if (mEditor != null && mEditor.mInputContentType != null) {
6978                        // If there is an action listener, given them a
6979                        // chance to consume the event.
6980                        if (mEditor.mInputContentType.onEditorActionListener != null
6981                                && mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6982                                        this, EditorInfo.IME_NULL, event)) {
6983                            mEditor.mInputContentType.enterDown = true;
6984                            // We are consuming the enter key for them.
6985                            return KEY_EVENT_HANDLED;
6986                        }
6987                    }
6988
6989                    // If our editor should move focus when enter is pressed, or
6990                    // this is a generated event from an IME action button, then
6991                    // don't let it be inserted into the text.
6992                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6993                            || shouldAdvanceFocusOnEnter()) {
6994                        if (hasOnClickListeners()) {
6995                            return KEY_EVENT_NOT_HANDLED;
6996                        }
6997                        return KEY_EVENT_HANDLED;
6998                    }
6999                }
7000                break;
7001
7002            case KeyEvent.KEYCODE_DPAD_CENTER:
7003                if (event.hasNoModifiers()) {
7004                    if (shouldAdvanceFocusOnEnter()) {
7005                        return KEY_EVENT_NOT_HANDLED;
7006                    }
7007                }
7008                break;
7009
7010            case KeyEvent.KEYCODE_TAB:
7011                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
7012                    if (shouldAdvanceFocusOnTab()) {
7013                        return KEY_EVENT_NOT_HANDLED;
7014                    }
7015                }
7016                break;
7017
7018                // Has to be done on key down (and not on key up) to correctly be intercepted.
7019            case KeyEvent.KEYCODE_BACK:
7020                if (mEditor != null && mEditor.getTextActionMode() != null) {
7021                    stopTextActionMode();
7022                    return KEY_EVENT_HANDLED;
7023                }
7024                break;
7025
7026            case KeyEvent.KEYCODE_CUT:
7027                if (event.hasNoModifiers() && canCut()) {
7028                    if (onTextContextMenuItem(ID_CUT)) {
7029                        return KEY_EVENT_HANDLED;
7030                    }
7031                }
7032                break;
7033
7034            case KeyEvent.KEYCODE_COPY:
7035                if (event.hasNoModifiers() && canCopy()) {
7036                    if (onTextContextMenuItem(ID_COPY)) {
7037                        return KEY_EVENT_HANDLED;
7038                    }
7039                }
7040                break;
7041
7042            case KeyEvent.KEYCODE_PASTE:
7043                if (event.hasNoModifiers() && canPaste()) {
7044                    if (onTextContextMenuItem(ID_PASTE)) {
7045                        return KEY_EVENT_HANDLED;
7046                    }
7047                }
7048                break;
7049        }
7050
7051        if (mEditor != null && mEditor.mKeyListener != null) {
7052            boolean doDown = true;
7053            if (otherEvent != null) {
7054                try {
7055                    beginBatchEdit();
7056                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
7057                            otherEvent);
7058                    hideErrorIfUnchanged();
7059                    doDown = false;
7060                    if (handled) {
7061                        return KEY_EVENT_HANDLED;
7062                    }
7063                } catch (AbstractMethodError e) {
7064                    // onKeyOther was added after 1.0, so if it isn't
7065                    // implemented we need to try to dispatch as a regular down.
7066                } finally {
7067                    endBatchEdit();
7068                }
7069            }
7070
7071            if (doDown) {
7072                beginBatchEdit();
7073                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
7074                        keyCode, event);
7075                endBatchEdit();
7076                hideErrorIfUnchanged();
7077                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
7078            }
7079        }
7080
7081        // bug 650865: sometimes we get a key event before a layout.
7082        // don't try to move around if we don't know the layout.
7083
7084        if (mMovement != null && mLayout != null) {
7085            boolean doDown = true;
7086            if (otherEvent != null) {
7087                try {
7088                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
7089                            otherEvent);
7090                    doDown = false;
7091                    if (handled) {
7092                        return KEY_EVENT_HANDLED;
7093                    }
7094                } catch (AbstractMethodError e) {
7095                    // onKeyOther was added after 1.0, so if it isn't
7096                    // implemented we need to try to dispatch as a regular down.
7097                }
7098            }
7099            if (doDown) {
7100                if (mMovement.onKeyDown(this, (Spannable) mText, keyCode, event)) {
7101                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
7102                        mPreventDefaultMovement = true;
7103                    }
7104                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
7105                }
7106            }
7107        }
7108
7109        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode)
7110                ? KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
7111    }
7112
7113    /**
7114     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
7115     * can be recorded.
7116     * @hide
7117     */
7118    public void resetErrorChangedFlag() {
7119        /*
7120         * Keep track of what the error was before doing the input
7121         * so that if an input filter changed the error, we leave
7122         * that error showing.  Otherwise, we take down whatever
7123         * error was showing when the user types something.
7124         */
7125        if (mEditor != null) mEditor.mErrorWasChanged = false;
7126    }
7127
7128    /**
7129     * @hide
7130     */
7131    public void hideErrorIfUnchanged() {
7132        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
7133            setError(null, null);
7134        }
7135    }
7136
7137    @Override
7138    public boolean onKeyUp(int keyCode, KeyEvent event) {
7139        if (!isEnabled()) {
7140            return super.onKeyUp(keyCode, event);
7141        }
7142
7143        if (!KeyEvent.isModifierKey(keyCode)) {
7144            mPreventDefaultMovement = false;
7145        }
7146
7147        switch (keyCode) {
7148            case KeyEvent.KEYCODE_DPAD_CENTER:
7149                if (event.hasNoModifiers()) {
7150                    /*
7151                     * If there is a click listener, just call through to
7152                     * super, which will invoke it.
7153                     *
7154                     * If there isn't a click listener, try to show the soft
7155                     * input method.  (It will also
7156                     * call performClick(), but that won't do anything in
7157                     * this case.)
7158                     */
7159                    if (!hasOnClickListeners()) {
7160                        if (mMovement != null && mText instanceof Editable
7161                                && mLayout != null && onCheckIsTextEditor()) {
7162                            InputMethodManager imm = InputMethodManager.peekInstance();
7163                            viewClicked(imm);
7164                            if (imm != null && getShowSoftInputOnFocus()) {
7165                                imm.showSoftInput(this, 0);
7166                            }
7167                        }
7168                    }
7169                }
7170                return super.onKeyUp(keyCode, event);
7171
7172            case KeyEvent.KEYCODE_ENTER:
7173                if (event.hasNoModifiers()) {
7174                    if (mEditor != null && mEditor.mInputContentType != null
7175                            && mEditor.mInputContentType.onEditorActionListener != null
7176                            && mEditor.mInputContentType.enterDown) {
7177                        mEditor.mInputContentType.enterDown = false;
7178                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
7179                                this, EditorInfo.IME_NULL, event)) {
7180                            return true;
7181                        }
7182                    }
7183
7184                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
7185                            || shouldAdvanceFocusOnEnter()) {
7186                        /*
7187                         * If there is a click listener, just call through to
7188                         * super, which will invoke it.
7189                         *
7190                         * If there isn't a click listener, try to advance focus,
7191                         * but still call through to super, which will reset the
7192                         * pressed state and longpress state.  (It will also
7193                         * call performClick(), but that won't do anything in
7194                         * this case.)
7195                         */
7196                        if (!hasOnClickListeners()) {
7197                            View v = focusSearch(FOCUS_DOWN);
7198
7199                            if (v != null) {
7200                                if (!v.requestFocus(FOCUS_DOWN)) {
7201                                    throw new IllegalStateException("focus search returned a view "
7202                                            + "that wasn't able to take focus!");
7203                                }
7204
7205                                /*
7206                                 * Return true because we handled the key; super
7207                                 * will return false because there was no click
7208                                 * listener.
7209                                 */
7210                                super.onKeyUp(keyCode, event);
7211                                return true;
7212                            } else if ((event.getFlags()
7213                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
7214                                // No target for next focus, but make sure the IME
7215                                // if this came from it.
7216                                InputMethodManager imm = InputMethodManager.peekInstance();
7217                                if (imm != null && imm.isActive(this)) {
7218                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
7219                                }
7220                            }
7221                        }
7222                    }
7223                    return super.onKeyUp(keyCode, event);
7224                }
7225                break;
7226        }
7227
7228        if (mEditor != null && mEditor.mKeyListener != null) {
7229            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event)) {
7230                return true;
7231            }
7232        }
7233
7234        if (mMovement != null && mLayout != null) {
7235            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event)) {
7236                return true;
7237            }
7238        }
7239
7240        return super.onKeyUp(keyCode, event);
7241    }
7242
7243    @Override
7244    public boolean onCheckIsTextEditor() {
7245        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
7246    }
7247
7248    @Override
7249    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
7250        if (onCheckIsTextEditor() && isEnabled()) {
7251            mEditor.createInputMethodStateIfNeeded();
7252            outAttrs.inputType = getInputType();
7253            if (mEditor.mInputContentType != null) {
7254                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
7255                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
7256                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
7257                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
7258                outAttrs.extras = mEditor.mInputContentType.extras;
7259                outAttrs.hintLocales = mEditor.mInputContentType.imeHintLocales;
7260            } else {
7261                outAttrs.imeOptions = EditorInfo.IME_NULL;
7262                outAttrs.hintLocales = null;
7263            }
7264            if (focusSearch(FOCUS_DOWN) != null) {
7265                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
7266            }
7267            if (focusSearch(FOCUS_UP) != null) {
7268                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
7269            }
7270            if ((outAttrs.imeOptions & EditorInfo.IME_MASK_ACTION)
7271                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
7272                if ((outAttrs.imeOptions & EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
7273                    // An action has not been set, but the enter key will move to
7274                    // the next focus, so set the action to that.
7275                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
7276                } else {
7277                    // An action has not been set, and there is no focus to move
7278                    // to, so let's just supply a "done" action.
7279                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
7280                }
7281                if (!shouldAdvanceFocusOnEnter()) {
7282                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
7283                }
7284            }
7285            if (isMultilineInputType(outAttrs.inputType)) {
7286                // Multi-line text editors should always show an enter key.
7287                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
7288            }
7289            outAttrs.hintText = mHint;
7290            if (mText instanceof Editable) {
7291                InputConnection ic = new EditableInputConnection(this);
7292                outAttrs.initialSelStart = getSelectionStart();
7293                outAttrs.initialSelEnd = getSelectionEnd();
7294                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
7295                return ic;
7296            }
7297        }
7298        return null;
7299    }
7300
7301    /**
7302     * If this TextView contains editable content, extract a portion of it
7303     * based on the information in <var>request</var> in to <var>outText</var>.
7304     * @return Returns true if the text was successfully extracted, else false.
7305     */
7306    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
7307        createEditorIfNeeded();
7308        return mEditor.extractText(request, outText);
7309    }
7310
7311    /**
7312     * This is used to remove all style-impacting spans from text before new
7313     * extracted text is being replaced into it, so that we don't have any
7314     * lingering spans applied during the replace.
7315     */
7316    static void removeParcelableSpans(Spannable spannable, int start, int end) {
7317        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
7318        int i = spans.length;
7319        while (i > 0) {
7320            i--;
7321            spannable.removeSpan(spans[i]);
7322        }
7323    }
7324
7325    /**
7326     * Apply to this text view the given extracted text, as previously
7327     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
7328     */
7329    public void setExtractedText(ExtractedText text) {
7330        Editable content = getEditableText();
7331        if (text.text != null) {
7332            if (content == null) {
7333                setText(text.text, TextView.BufferType.EDITABLE);
7334            } else {
7335                int start = 0;
7336                int end = content.length();
7337
7338                if (text.partialStartOffset >= 0) {
7339                    final int N = content.length();
7340                    start = text.partialStartOffset;
7341                    if (start > N) start = N;
7342                    end = text.partialEndOffset;
7343                    if (end > N) end = N;
7344                }
7345
7346                removeParcelableSpans(content, start, end);
7347                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
7348                    if (text.text instanceof Spanned) {
7349                        // OK to copy spans only.
7350                        TextUtils.copySpansFrom((Spanned) text.text, 0, end - start,
7351                                Object.class, content, start);
7352                    }
7353                } else {
7354                    content.replace(start, end, text.text);
7355                }
7356            }
7357        }
7358
7359        // Now set the selection position...  make sure it is in range, to
7360        // avoid crashes.  If this is a partial update, it is possible that
7361        // the underlying text may have changed, causing us problems here.
7362        // Also we just don't want to trust clients to do the right thing.
7363        Spannable sp = (Spannable) getText();
7364        final int N = sp.length();
7365        int start = text.selectionStart;
7366        if (start < 0) {
7367            start = 0;
7368        } else if (start > N) {
7369            start = N;
7370        }
7371        int end = text.selectionEnd;
7372        if (end < 0) {
7373            end = 0;
7374        } else if (end > N) {
7375            end = N;
7376        }
7377        Selection.setSelection(sp, start, end);
7378
7379        // Finally, update the selection mode.
7380        if ((text.flags & ExtractedText.FLAG_SELECTING) != 0) {
7381            MetaKeyKeyListener.startSelecting(this, sp);
7382        } else {
7383            MetaKeyKeyListener.stopSelecting(this, sp);
7384        }
7385    }
7386
7387    /**
7388     * @hide
7389     */
7390    public void setExtracting(ExtractedTextRequest req) {
7391        if (mEditor.mInputMethodState != null) {
7392            mEditor.mInputMethodState.mExtractedTextRequest = req;
7393        }
7394        // This would stop a possible selection mode, but no such mode is started in case
7395        // extracted mode will start. Some text is selected though, and will trigger an action mode
7396        // in the extracted view.
7397        mEditor.hideCursorAndSpanControllers();
7398        stopTextActionMode();
7399        if (mEditor.mSelectionModifierCursorController != null) {
7400            mEditor.mSelectionModifierCursorController.resetTouchOffsets();
7401        }
7402    }
7403
7404    /**
7405     * Called by the framework in response to a text completion from
7406     * the current input method, provided by it calling
7407     * {@link InputConnection#commitCompletion
7408     * InputConnection.commitCompletion()}.  The default implementation does
7409     * nothing; text views that are supporting auto-completion should override
7410     * this to do their desired behavior.
7411     *
7412     * @param text The auto complete text the user has selected.
7413     */
7414    public void onCommitCompletion(CompletionInfo text) {
7415        // intentionally empty
7416    }
7417
7418    /**
7419     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
7420     * a dictionary) from the current input method, provided by it calling
7421     * {@link InputConnection#commitCorrection(CorrectionInfo) InputConnection.commitCorrection()}.
7422     * The default implementation flashes the background of the corrected word to provide
7423     * feedback to the user.
7424     *
7425     * @param info The auto correct info about the text that was corrected.
7426     */
7427    public void onCommitCorrection(CorrectionInfo info) {
7428        if (mEditor != null) mEditor.onCommitCorrection(info);
7429    }
7430
7431    public void beginBatchEdit() {
7432        if (mEditor != null) mEditor.beginBatchEdit();
7433    }
7434
7435    public void endBatchEdit() {
7436        if (mEditor != null) mEditor.endBatchEdit();
7437    }
7438
7439    /**
7440     * Called by the framework in response to a request to begin a batch
7441     * of edit operations through a call to link {@link #beginBatchEdit()}.
7442     */
7443    public void onBeginBatchEdit() {
7444        // intentionally empty
7445    }
7446
7447    /**
7448     * Called by the framework in response to a request to end a batch
7449     * of edit operations through a call to link {@link #endBatchEdit}.
7450     */
7451    public void onEndBatchEdit() {
7452        // intentionally empty
7453    }
7454
7455    /**
7456     * Called by the framework in response to a private command from the
7457     * current method, provided by it calling
7458     * {@link InputConnection#performPrivateCommand
7459     * InputConnection.performPrivateCommand()}.
7460     *
7461     * @param action The action name of the command.
7462     * @param data Any additional data for the command.  This may be null.
7463     * @return Return true if you handled the command, else false.
7464     */
7465    public boolean onPrivateIMECommand(String action, Bundle data) {
7466        return false;
7467    }
7468
7469    private void nullLayouts() {
7470        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
7471            mSavedLayout = (BoringLayout) mLayout;
7472        }
7473        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
7474            mSavedHintLayout = (BoringLayout) mHintLayout;
7475        }
7476
7477        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
7478
7479        mBoring = mHintBoring = null;
7480
7481        // Since it depends on the value of mLayout
7482        if (mEditor != null) mEditor.prepareCursorControllers();
7483    }
7484
7485    /**
7486     * Make a new Layout based on the already-measured size of the view,
7487     * on the assumption that it was measured correctly at some point.
7488     */
7489    private void assumeLayout() {
7490        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7491
7492        if (width < 1) {
7493            width = 0;
7494        }
7495
7496        int physicalWidth = width;
7497
7498        if (mHorizontallyScrolling) {
7499            width = VERY_WIDE;
7500        }
7501
7502        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
7503                      physicalWidth, false);
7504    }
7505
7506    private Layout.Alignment getLayoutAlignment() {
7507        Layout.Alignment alignment;
7508        switch (getTextAlignment()) {
7509            case TEXT_ALIGNMENT_GRAVITY:
7510                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
7511                    case Gravity.START:
7512                        alignment = Layout.Alignment.ALIGN_NORMAL;
7513                        break;
7514                    case Gravity.END:
7515                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
7516                        break;
7517                    case Gravity.LEFT:
7518                        alignment = Layout.Alignment.ALIGN_LEFT;
7519                        break;
7520                    case Gravity.RIGHT:
7521                        alignment = Layout.Alignment.ALIGN_RIGHT;
7522                        break;
7523                    case Gravity.CENTER_HORIZONTAL:
7524                        alignment = Layout.Alignment.ALIGN_CENTER;
7525                        break;
7526                    default:
7527                        alignment = Layout.Alignment.ALIGN_NORMAL;
7528                        break;
7529                }
7530                break;
7531            case TEXT_ALIGNMENT_TEXT_START:
7532                alignment = Layout.Alignment.ALIGN_NORMAL;
7533                break;
7534            case TEXT_ALIGNMENT_TEXT_END:
7535                alignment = Layout.Alignment.ALIGN_OPPOSITE;
7536                break;
7537            case TEXT_ALIGNMENT_CENTER:
7538                alignment = Layout.Alignment.ALIGN_CENTER;
7539                break;
7540            case TEXT_ALIGNMENT_VIEW_START:
7541                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL)
7542                        ? Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
7543                break;
7544            case TEXT_ALIGNMENT_VIEW_END:
7545                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL)
7546                        ? Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
7547                break;
7548            case TEXT_ALIGNMENT_INHERIT:
7549                // This should never happen as we have already resolved the text alignment
7550                // but better safe than sorry so we just fall through
7551            default:
7552                alignment = Layout.Alignment.ALIGN_NORMAL;
7553                break;
7554        }
7555        return alignment;
7556    }
7557
7558    /**
7559     * The width passed in is now the desired layout width,
7560     * not the full view width with padding.
7561     * {@hide}
7562     */
7563    protected void makeNewLayout(int wantWidth, int hintWidth,
7564                                 BoringLayout.Metrics boring,
7565                                 BoringLayout.Metrics hintBoring,
7566                                 int ellipsisWidth, boolean bringIntoView) {
7567        stopMarquee();
7568
7569        // Update "old" cached values
7570        mOldMaximum = mMaximum;
7571        mOldMaxMode = mMaxMode;
7572
7573        mHighlightPathBogus = true;
7574
7575        if (wantWidth < 0) {
7576            wantWidth = 0;
7577        }
7578        if (hintWidth < 0) {
7579            hintWidth = 0;
7580        }
7581
7582        Layout.Alignment alignment = getLayoutAlignment();
7583        final boolean testDirChange = mSingleLine && mLayout != null
7584                && (alignment == Layout.Alignment.ALIGN_NORMAL
7585                        || alignment == Layout.Alignment.ALIGN_OPPOSITE);
7586        int oldDir = 0;
7587        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
7588        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
7589        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE
7590                && mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
7591        TruncateAt effectiveEllipsize = mEllipsize;
7592        if (mEllipsize == TruncateAt.MARQUEE
7593                && mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7594            effectiveEllipsize = TruncateAt.END_SMALL;
7595        }
7596
7597        if (mTextDir == null) {
7598            mTextDir = getTextDirectionHeuristic();
7599        }
7600
7601        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
7602                effectiveEllipsize, effectiveEllipsize == mEllipsize);
7603        if (switchEllipsize) {
7604            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE
7605                    ? TruncateAt.END : TruncateAt.MARQUEE;
7606            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
7607                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
7608        }
7609
7610        shouldEllipsize = mEllipsize != null;
7611        mHintLayout = null;
7612
7613        if (mHint != null) {
7614            if (shouldEllipsize) hintWidth = wantWidth;
7615
7616            if (hintBoring == UNKNOWN_BORING) {
7617                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
7618                                                   mHintBoring);
7619                if (hintBoring != null) {
7620                    mHintBoring = hintBoring;
7621                }
7622            }
7623
7624            if (hintBoring != null) {
7625                if (hintBoring.width <= hintWidth
7626                        && (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
7627                    if (mSavedHintLayout != null) {
7628                        mHintLayout = mSavedHintLayout.replaceOrMake(mHint, mTextPaint,
7629                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
7630                                hintBoring, mIncludePad);
7631                    } else {
7632                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
7633                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
7634                                hintBoring, mIncludePad);
7635                    }
7636
7637                    mSavedHintLayout = (BoringLayout) mHintLayout;
7638                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
7639                    if (mSavedHintLayout != null) {
7640                        mHintLayout = mSavedHintLayout.replaceOrMake(mHint, mTextPaint,
7641                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
7642                                hintBoring, mIncludePad, mEllipsize,
7643                                ellipsisWidth);
7644                    } else {
7645                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
7646                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
7647                                hintBoring, mIncludePad, mEllipsize,
7648                                ellipsisWidth);
7649                    }
7650                }
7651            }
7652            // TODO: code duplication with makeSingleLayout()
7653            if (mHintLayout == null) {
7654                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
7655                        mHint.length(), mTextPaint, hintWidth)
7656                        .setAlignment(alignment)
7657                        .setTextDirection(mTextDir)
7658                        .setLineSpacing(mSpacingAdd, mSpacingMult)
7659                        .setIncludePad(mIncludePad)
7660                        .setBreakStrategy(mBreakStrategy)
7661                        .setHyphenationFrequency(mHyphenationFrequency)
7662                        .setJustify(mJustify)
7663                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
7664                if (shouldEllipsize) {
7665                    builder.setEllipsize(mEllipsize)
7666                            .setEllipsizedWidth(ellipsisWidth);
7667                }
7668                mHintLayout = builder.build();
7669            }
7670        }
7671
7672        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
7673            registerForPreDraw();
7674        }
7675
7676        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7677            if (!compressText(ellipsisWidth)) {
7678                final int height = mLayoutParams.height;
7679                // If the size of the view does not depend on the size of the text, try to
7680                // start the marquee immediately
7681                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
7682                    startMarquee();
7683                } else {
7684                    // Defer the start of the marquee until we know our width (see setFrame())
7685                    mRestartMarquee = true;
7686                }
7687            }
7688        }
7689
7690        // CursorControllers need a non-null mLayout
7691        if (mEditor != null) mEditor.prepareCursorControllers();
7692    }
7693
7694    /**
7695     * @hide
7696     */
7697    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
7698            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
7699            boolean useSaved) {
7700        Layout result = null;
7701        if (mText instanceof Spannable) {
7702            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
7703                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
7704                    mBreakStrategy, mHyphenationFrequency, mJustify,
7705                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
7706        } else {
7707            if (boring == UNKNOWN_BORING) {
7708                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7709                if (boring != null) {
7710                    mBoring = boring;
7711                }
7712            }
7713
7714            if (boring != null) {
7715                if (boring.width <= wantWidth
7716                        && (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
7717                    if (useSaved && mSavedLayout != null) {
7718                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
7719                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
7720                                boring, mIncludePad);
7721                    } else {
7722                        result = BoringLayout.make(mTransformed, mTextPaint,
7723                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
7724                                boring, mIncludePad);
7725                    }
7726
7727                    if (useSaved) {
7728                        mSavedLayout = (BoringLayout) result;
7729                    }
7730                } else if (shouldEllipsize && boring.width <= wantWidth) {
7731                    if (useSaved && mSavedLayout != null) {
7732                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
7733                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
7734                                boring, mIncludePad, effectiveEllipsize,
7735                                ellipsisWidth);
7736                    } else {
7737                        result = BoringLayout.make(mTransformed, mTextPaint,
7738                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
7739                                boring, mIncludePad, effectiveEllipsize,
7740                                ellipsisWidth);
7741                    }
7742                }
7743            }
7744        }
7745        if (result == null) {
7746            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
7747                    0, mTransformed.length(), mTextPaint, wantWidth)
7748                    .setAlignment(alignment)
7749                    .setTextDirection(mTextDir)
7750                    .setLineSpacing(mSpacingAdd, mSpacingMult)
7751                    .setIncludePad(mIncludePad)
7752                    .setBreakStrategy(mBreakStrategy)
7753                    .setHyphenationFrequency(mHyphenationFrequency)
7754                    .setJustify(mJustify)
7755                    .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
7756            if (shouldEllipsize) {
7757                builder.setEllipsize(effectiveEllipsize)
7758                        .setEllipsizedWidth(ellipsisWidth);
7759            }
7760            // TODO: explore always setting maxLines
7761            result = builder.build();
7762        }
7763        return result;
7764    }
7765
7766    private boolean compressText(float width) {
7767        if (isHardwareAccelerated()) return false;
7768
7769        // Only compress the text if it hasn't been compressed by the previous pass
7770        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX
7771                && mTextPaint.getTextScaleX() == 1.0f) {
7772            final float textWidth = mLayout.getLineWidth(0);
7773            final float overflow = (textWidth + 1.0f - width) / width;
7774            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
7775                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
7776                post(new Runnable() {
7777                    public void run() {
7778                        requestLayout();
7779                    }
7780                });
7781                return true;
7782            }
7783        }
7784
7785        return false;
7786    }
7787
7788    private static int desired(Layout layout) {
7789        int n = layout.getLineCount();
7790        CharSequence text = layout.getText();
7791        float max = 0;
7792
7793        // if any line was wrapped, we can't use it.
7794        // but it's ok for the last line not to have a newline
7795
7796        for (int i = 0; i < n - 1; i++) {
7797            if (text.charAt(layout.getLineEnd(i) - 1) != '\n') {
7798                return -1;
7799            }
7800        }
7801
7802        for (int i = 0; i < n; i++) {
7803            max = Math.max(max, layout.getLineWidth(i));
7804        }
7805
7806        return (int) Math.ceil(max);
7807    }
7808
7809    /**
7810     * Set whether the TextView includes extra top and bottom padding to make
7811     * room for accents that go above the normal ascent and descent.
7812     * The default is true.
7813     *
7814     * @see #getIncludeFontPadding()
7815     *
7816     * @attr ref android.R.styleable#TextView_includeFontPadding
7817     */
7818    public void setIncludeFontPadding(boolean includepad) {
7819        if (mIncludePad != includepad) {
7820            mIncludePad = includepad;
7821
7822            if (mLayout != null) {
7823                nullLayouts();
7824                requestLayout();
7825                invalidate();
7826            }
7827        }
7828    }
7829
7830    /**
7831     * Gets whether the TextView includes extra top and bottom padding to make
7832     * room for accents that go above the normal ascent and descent.
7833     *
7834     * @see #setIncludeFontPadding(boolean)
7835     *
7836     * @attr ref android.R.styleable#TextView_includeFontPadding
7837     */
7838    public boolean getIncludeFontPadding() {
7839        return mIncludePad;
7840    }
7841
7842    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
7843
7844    @Override
7845    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
7846        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
7847        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
7848        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
7849        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
7850
7851        int width;
7852        int height;
7853
7854        BoringLayout.Metrics boring = UNKNOWN_BORING;
7855        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
7856
7857        if (mTextDir == null) {
7858            mTextDir = getTextDirectionHeuristic();
7859        }
7860
7861        int des = -1;
7862        boolean fromexisting = false;
7863
7864        if (widthMode == MeasureSpec.EXACTLY) {
7865            // Parent has told us how big to be. So be it.
7866            width = widthSize;
7867        } else {
7868            if (mLayout != null && mEllipsize == null) {
7869                des = desired(mLayout);
7870            }
7871
7872            if (des < 0) {
7873                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7874                if (boring != null) {
7875                    mBoring = boring;
7876                }
7877            } else {
7878                fromexisting = true;
7879            }
7880
7881            if (boring == null || boring == UNKNOWN_BORING) {
7882                if (des < 0) {
7883                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, 0,
7884                            mTransformed.length(), mTextPaint, mTextDir));
7885                }
7886                width = des;
7887            } else {
7888                width = boring.width;
7889            }
7890
7891            final Drawables dr = mDrawables;
7892            if (dr != null) {
7893                width = Math.max(width, dr.mDrawableWidthTop);
7894                width = Math.max(width, dr.mDrawableWidthBottom);
7895            }
7896
7897            if (mHint != null) {
7898                int hintDes = -1;
7899                int hintWidth;
7900
7901                if (mHintLayout != null && mEllipsize == null) {
7902                    hintDes = desired(mHintLayout);
7903                }
7904
7905                if (hintDes < 0) {
7906                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7907                    if (hintBoring != null) {
7908                        mHintBoring = hintBoring;
7909                    }
7910                }
7911
7912                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7913                    if (hintDes < 0) {
7914                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, 0, mHint.length(),
7915                                mTextPaint, mTextDir));
7916                    }
7917                    hintWidth = hintDes;
7918                } else {
7919                    hintWidth = hintBoring.width;
7920                }
7921
7922                if (hintWidth > width) {
7923                    width = hintWidth;
7924                }
7925            }
7926
7927            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7928
7929            if (mMaxWidthMode == EMS) {
7930                width = Math.min(width, mMaxWidth * getLineHeight());
7931            } else {
7932                width = Math.min(width, mMaxWidth);
7933            }
7934
7935            if (mMinWidthMode == EMS) {
7936                width = Math.max(width, mMinWidth * getLineHeight());
7937            } else {
7938                width = Math.max(width, mMinWidth);
7939            }
7940
7941            // Check against our minimum width
7942            width = Math.max(width, getSuggestedMinimumWidth());
7943
7944            if (widthMode == MeasureSpec.AT_MOST) {
7945                width = Math.min(widthSize, width);
7946            }
7947        }
7948
7949        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7950        int unpaddedWidth = want;
7951
7952        if (mHorizontallyScrolling) want = VERY_WIDE;
7953
7954        int hintWant = want;
7955        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7956
7957        if (mLayout == null) {
7958            makeNewLayout(want, hintWant, boring, hintBoring,
7959                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7960        } else {
7961            final boolean layoutChanged = (mLayout.getWidth() != want) || (hintWidth != hintWant)
7962                    || (mLayout.getEllipsizedWidth()
7963                            != width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7964
7965            final boolean widthChanged = (mHint == null) && (mEllipsize == null)
7966                    && (want > mLayout.getWidth())
7967                    && (mLayout instanceof BoringLayout
7968                            || (fromexisting && des >= 0 && des <= want));
7969
7970            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7971
7972            if (layoutChanged || maximumChanged) {
7973                if (!maximumChanged && widthChanged) {
7974                    mLayout.increaseWidthTo(want);
7975                } else {
7976                    makeNewLayout(want, hintWant, boring, hintBoring,
7977                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7978                }
7979            } else {
7980                // Nothing has changed
7981            }
7982        }
7983
7984        if (heightMode == MeasureSpec.EXACTLY) {
7985            // Parent has told us how big to be. So be it.
7986            height = heightSize;
7987            mDesiredHeightAtMeasure = -1;
7988        } else {
7989            int desired = getDesiredHeight();
7990
7991            height = desired;
7992            mDesiredHeightAtMeasure = desired;
7993
7994            if (heightMode == MeasureSpec.AT_MOST) {
7995                height = Math.min(desired, heightSize);
7996            }
7997        }
7998
7999        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
8000        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
8001            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
8002        }
8003
8004        /*
8005         * We didn't let makeNewLayout() register to bring the cursor into view,
8006         * so do it here if there is any possibility that it is needed.
8007         */
8008        if (mMovement != null
8009                || mLayout.getWidth() > unpaddedWidth
8010                || mLayout.getHeight() > unpaddedHeight) {
8011            registerForPreDraw();
8012        } else {
8013            scrollTo(0, 0);
8014        }
8015
8016        setMeasuredDimension(width, height);
8017    }
8018
8019    /**
8020     * Automatically computes and sets the text size.
8021     */
8022    private void autoSizeText() {
8023        final int maxWidth = getWidth() - getTotalPaddingLeft() - getTotalPaddingRight();
8024        final int maxHeight = getHeight() - getExtendedPaddingBottom() - getExtendedPaddingTop();
8025
8026        if (maxWidth <= 0 || maxHeight <= 0) {
8027            return;
8028        }
8029
8030        synchronized (TEMP_RECTF) {
8031            TEMP_RECTF.setEmpty();
8032            TEMP_RECTF.right = maxWidth;
8033            TEMP_RECTF.bottom = maxHeight;
8034            final float optimalTextSize = findLargestTextSizeWhichFits(TEMP_RECTF);
8035            if (optimalTextSize != getTextSize()) {
8036                setTextSizeInternal(TypedValue.COMPLEX_UNIT_PX, optimalTextSize);
8037            }
8038        }
8039    }
8040
8041    /**
8042     * Performs a binary search to find the largest text size that will still fit within the size
8043     * available to this view.
8044     */
8045    private int findLargestTextSizeWhichFits(RectF availableSpace) {
8046        final int sizesCount = mAutoSizeTextSizesInPx.length;
8047        if (sizesCount == 0) {
8048            throw new IllegalStateException("No available text sizes to choose from.");
8049        }
8050
8051        int bestSizeIndex = 0;
8052        int lowIndex = bestSizeIndex + 1;
8053        int highIndex = sizesCount - 1;
8054        int sizeToTryIndex;
8055        while (lowIndex <= highIndex) {
8056            sizeToTryIndex = (lowIndex + highIndex) / 2;
8057            if (suggestedSizeFitsInSpace(mAutoSizeTextSizesInPx[sizeToTryIndex], availableSpace)) {
8058                bestSizeIndex = lowIndex;
8059                lowIndex = sizeToTryIndex + 1;
8060            } else {
8061                highIndex = sizeToTryIndex - 1;
8062                bestSizeIndex = highIndex;
8063            }
8064        }
8065
8066        return mAutoSizeTextSizesInPx[bestSizeIndex];
8067    }
8068
8069    private boolean suggestedSizeFitsInSpace(int suggestedSizeInPx, RectF availableSpace) {
8070        final CharSequence text = getText();
8071        final int maxLines = getMaxLines();
8072        if (mTempTextPaint == null) {
8073            mTempTextPaint = new TextPaint();
8074        } else {
8075            mTempTextPaint.reset();
8076        }
8077        mTempTextPaint.set(getPaint());
8078        mTempTextPaint.setTextSize(suggestedSizeInPx);
8079
8080        if ((mLayout instanceof BoringLayout) && BoringLayout.isBoring(
8081                text, mTempTextPaint, getTextDirectionHeuristic(), mBoring) != null) {
8082            return mTempTextPaint.getFontSpacing() <= availableSpace.bottom
8083                    && mTempTextPaint.measureText(text, 0, text.length()) <= availableSpace.right;
8084        } else {
8085            StaticLayout.Builder layoutBuilder = StaticLayout.Builder.obtain(text, 0, text.length(),
8086                    mTempTextPaint,
8087                    getMeasuredWidth() - getTotalPaddingLeft() - getTotalPaddingRight());
8088            layoutBuilder.setAlignment(getLayoutAlignment());
8089            layoutBuilder.setLineSpacing(getLineSpacingExtra(), getLineSpacingMultiplier());
8090            layoutBuilder.setIncludePad(true);
8091            StaticLayout layout = layoutBuilder.build();
8092
8093            // Lines overflow.
8094            if (maxLines != -1 && layout.getLineCount() > maxLines) {
8095                return false;
8096            }
8097
8098            // Height overflow.
8099            if (layout.getHeight() > availableSpace.bottom) {
8100                return false;
8101            }
8102        }
8103
8104        return true;
8105    }
8106
8107    private int getDesiredHeight() {
8108        return Math.max(
8109                getDesiredHeight(mLayout, true),
8110                getDesiredHeight(mHintLayout, mEllipsize != null));
8111    }
8112
8113    private int getDesiredHeight(Layout layout, boolean cap) {
8114        if (layout == null) {
8115            return 0;
8116        }
8117
8118        /*
8119        * Don't cap the hint to a certain number of lines.
8120        * (Do cap it, though, if we have a maximum pixel height.)
8121        */
8122        int desired = layout.getHeight(cap);
8123
8124        final Drawables dr = mDrawables;
8125        if (dr != null) {
8126            desired = Math.max(desired, dr.mDrawableHeightLeft);
8127            desired = Math.max(desired, dr.mDrawableHeightRight);
8128        }
8129
8130        int linecount = layout.getLineCount();
8131        final int padding = getCompoundPaddingTop() + getCompoundPaddingBottom();
8132        desired += padding;
8133
8134        if (mMaxMode != LINES) {
8135            desired = Math.min(desired, mMaximum);
8136        } else if (cap && linecount > mMaximum && layout instanceof DynamicLayout) {
8137            desired = layout.getLineTop(mMaximum);
8138
8139            if (dr != null) {
8140                desired = Math.max(desired, dr.mDrawableHeightLeft);
8141                desired = Math.max(desired, dr.mDrawableHeightRight);
8142            }
8143
8144            desired += padding;
8145            linecount = mMaximum;
8146        }
8147
8148        if (mMinMode == LINES) {
8149            if (linecount < mMinimum) {
8150                desired += getLineHeight() * (mMinimum - linecount);
8151            }
8152        } else {
8153            desired = Math.max(desired, mMinimum);
8154        }
8155
8156        // Check against our minimum height
8157        desired = Math.max(desired, getSuggestedMinimumHeight());
8158
8159        return desired;
8160    }
8161
8162    /**
8163     * Check whether a change to the existing text layout requires a
8164     * new view layout.
8165     */
8166    private void checkForResize() {
8167        boolean sizeChanged = false;
8168
8169        if (mLayout != null) {
8170            // Check if our width changed
8171            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
8172                sizeChanged = true;
8173                invalidate();
8174            }
8175
8176            // Check if our height changed
8177            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
8178                int desiredHeight = getDesiredHeight();
8179
8180                if (desiredHeight != this.getHeight()) {
8181                    sizeChanged = true;
8182                }
8183            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
8184                if (mDesiredHeightAtMeasure >= 0) {
8185                    int desiredHeight = getDesiredHeight();
8186
8187                    if (desiredHeight != mDesiredHeightAtMeasure) {
8188                        sizeChanged = true;
8189                    }
8190                }
8191            }
8192        }
8193
8194        if (sizeChanged) {
8195            requestLayout();
8196            // caller will have already invalidated
8197        }
8198    }
8199
8200    /**
8201     * Check whether entirely new text requires a new view layout
8202     * or merely a new text layout.
8203     */
8204    private void checkForRelayout() {
8205        // If we have a fixed width, we can just swap in a new text layout
8206        // if the text height stays the same or if the view height is fixed.
8207
8208        if (((mLayoutParams.width != LayoutParams.WRAP_CONTENT && mLayoutParams.width != 0)
8209                || (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth))
8210                && (mHint == null || mHintLayout != null)
8211                && (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
8212            // Static width, so try making a new text layout.
8213
8214            int oldht = mLayout.getHeight();
8215            int want = mLayout.getWidth();
8216            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
8217
8218            /*
8219             * No need to bring the text into view, since the size is not
8220             * changing (unless we do the requestLayout(), in which case it
8221             * will happen at measure).
8222             */
8223            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
8224                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
8225                          false);
8226
8227            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
8228                // In a fixed-height view, so use our new text layout.
8229                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT
8230                        && mLayoutParams.height != LayoutParams.MATCH_PARENT) {
8231                    invalidate();
8232                    return;
8233                }
8234
8235                // Dynamic height, but height has stayed the same,
8236                // so use our new text layout.
8237                if (mLayout.getHeight() == oldht
8238                        && (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
8239                    invalidate();
8240                    return;
8241                }
8242            }
8243
8244            // We lose: the height has changed and we have a dynamic height.
8245            // Request a new view layout using our new text layout.
8246            requestLayout();
8247            invalidate();
8248        } else {
8249            // Dynamic width, so we have no choice but to request a new
8250            // view layout with a new text layout.
8251            nullLayouts();
8252            requestLayout();
8253            invalidate();
8254        }
8255    }
8256
8257    @Override
8258    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
8259        super.onLayout(changed, left, top, right, bottom);
8260        if (mDeferScroll >= 0) {
8261            int curs = mDeferScroll;
8262            mDeferScroll = -1;
8263            bringPointIntoView(Math.min(curs, mText.length()));
8264        }
8265
8266        if (isAutoSizeEnabled()) {
8267            if (mNeedsAutoSizeText) {
8268                // Call auto-size after the width and height have been calculated.
8269                autoSizeText();
8270            }
8271            // Always try to auto-size if enabled. Functions that do not want to trigger auto-sizing
8272            // after the next layout round should set this to false.
8273            mNeedsAutoSizeText = true;
8274        }
8275    }
8276
8277    private boolean isShowingHint() {
8278        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
8279    }
8280
8281    /**
8282     * Returns true if anything changed.
8283     */
8284    private boolean bringTextIntoView() {
8285        Layout layout = isShowingHint() ? mHintLayout : mLayout;
8286        int line = 0;
8287        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8288            line = layout.getLineCount() - 1;
8289        }
8290
8291        Layout.Alignment a = layout.getParagraphAlignment(line);
8292        int dir = layout.getParagraphDirection(line);
8293        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
8294        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
8295        int ht = layout.getHeight();
8296
8297        int scrollx, scrolly;
8298
8299        // Convert to left, center, or right alignment.
8300        if (a == Layout.Alignment.ALIGN_NORMAL) {
8301            a = dir == Layout.DIR_LEFT_TO_RIGHT
8302                    ? Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
8303        } else if (a == Layout.Alignment.ALIGN_OPPOSITE) {
8304            a = dir == Layout.DIR_LEFT_TO_RIGHT
8305                    ? Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
8306        }
8307
8308        if (a == Layout.Alignment.ALIGN_CENTER) {
8309            /*
8310             * Keep centered if possible, or, if it is too wide to fit,
8311             * keep leading edge in view.
8312             */
8313
8314            int left = (int) Math.floor(layout.getLineLeft(line));
8315            int right = (int) Math.ceil(layout.getLineRight(line));
8316
8317            if (right - left < hspace) {
8318                scrollx = (right + left) / 2 - hspace / 2;
8319            } else {
8320                if (dir < 0) {
8321                    scrollx = right - hspace;
8322                } else {
8323                    scrollx = left;
8324                }
8325            }
8326        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
8327            int right = (int) Math.ceil(layout.getLineRight(line));
8328            scrollx = right - hspace;
8329        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
8330            scrollx = (int) Math.floor(layout.getLineLeft(line));
8331        }
8332
8333        if (ht < vspace) {
8334            scrolly = 0;
8335        } else {
8336            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8337                scrolly = ht - vspace;
8338            } else {
8339                scrolly = 0;
8340            }
8341        }
8342
8343        if (scrollx != mScrollX || scrolly != mScrollY) {
8344            scrollTo(scrollx, scrolly);
8345            return true;
8346        } else {
8347            return false;
8348        }
8349    }
8350
8351    /**
8352     * Move the point, specified by the offset, into the view if it is needed.
8353     * This has to be called after layout. Returns true if anything changed.
8354     */
8355    public boolean bringPointIntoView(int offset) {
8356        if (isLayoutRequested()) {
8357            mDeferScroll = offset;
8358            return false;
8359        }
8360        boolean changed = false;
8361
8362        Layout layout = isShowingHint() ? mHintLayout : mLayout;
8363
8364        if (layout == null) return changed;
8365
8366        int line = layout.getLineForOffset(offset);
8367
8368        int grav;
8369
8370        switch (layout.getParagraphAlignment(line)) {
8371            case ALIGN_LEFT:
8372                grav = 1;
8373                break;
8374            case ALIGN_RIGHT:
8375                grav = -1;
8376                break;
8377            case ALIGN_NORMAL:
8378                grav = layout.getParagraphDirection(line);
8379                break;
8380            case ALIGN_OPPOSITE:
8381                grav = -layout.getParagraphDirection(line);
8382                break;
8383            case ALIGN_CENTER:
8384            default:
8385                grav = 0;
8386                break;
8387        }
8388
8389        // We only want to clamp the cursor to fit within the layout width
8390        // in left-to-right modes, because in a right to left alignment,
8391        // we want to scroll to keep the line-right on the screen, as other
8392        // lines are likely to have text flush with the right margin, which
8393        // we want to keep visible.
8394        // A better long-term solution would probably be to measure both
8395        // the full line and a blank-trimmed version, and, for example, use
8396        // the latter measurement for centering and right alignment, but for
8397        // the time being we only implement the cursor clamping in left to
8398        // right where it is most likely to be annoying.
8399        final boolean clamped = grav > 0;
8400        // FIXME: Is it okay to truncate this, or should we round?
8401        final int x = (int) layout.getPrimaryHorizontal(offset, clamped, true);
8402        final int top = layout.getLineTop(line);
8403        final int bottom = layout.getLineTop(line + 1);
8404
8405        int left = (int) Math.floor(layout.getLineLeft(line));
8406        int right = (int) Math.ceil(layout.getLineRight(line));
8407        int ht = layout.getHeight();
8408
8409        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
8410        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
8411        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
8412            // If cursor has been clamped, make sure we don't scroll.
8413            right = Math.max(x, left + hspace);
8414        }
8415
8416        int hslack = (bottom - top) / 2;
8417        int vslack = hslack;
8418
8419        if (vslack > vspace / 4) {
8420            vslack = vspace / 4;
8421        }
8422        if (hslack > hspace / 4) {
8423            hslack = hspace / 4;
8424        }
8425
8426        int hs = mScrollX;
8427        int vs = mScrollY;
8428
8429        if (top - vs < vslack) {
8430            vs = top - vslack;
8431        }
8432        if (bottom - vs > vspace - vslack) {
8433            vs = bottom - (vspace - vslack);
8434        }
8435        if (ht - vs < vspace) {
8436            vs = ht - vspace;
8437        }
8438        if (0 - vs > 0) {
8439            vs = 0;
8440        }
8441
8442        if (grav != 0) {
8443            if (x - hs < hslack) {
8444                hs = x - hslack;
8445            }
8446            if (x - hs > hspace - hslack) {
8447                hs = x - (hspace - hslack);
8448            }
8449        }
8450
8451        if (grav < 0) {
8452            if (left - hs > 0) {
8453                hs = left;
8454            }
8455            if (right - hs < hspace) {
8456                hs = right - hspace;
8457            }
8458        } else if (grav > 0) {
8459            if (right - hs < hspace) {
8460                hs = right - hspace;
8461            }
8462            if (left - hs > 0) {
8463                hs = left;
8464            }
8465        } else /* grav == 0 */ {
8466            if (right - left <= hspace) {
8467                /*
8468                 * If the entire text fits, center it exactly.
8469                 */
8470                hs = left - (hspace - (right - left)) / 2;
8471            } else if (x > right - hslack) {
8472                /*
8473                 * If we are near the right edge, keep the right edge
8474                 * at the edge of the view.
8475                 */
8476                hs = right - hspace;
8477            } else if (x < left + hslack) {
8478                /*
8479                 * If we are near the left edge, keep the left edge
8480                 * at the edge of the view.
8481                 */
8482                hs = left;
8483            } else if (left > hs) {
8484                /*
8485                 * Is there whitespace visible at the left?  Fix it if so.
8486                 */
8487                hs = left;
8488            } else if (right < hs + hspace) {
8489                /*
8490                 * Is there whitespace visible at the right?  Fix it if so.
8491                 */
8492                hs = right - hspace;
8493            } else {
8494                /*
8495                 * Otherwise, float as needed.
8496                 */
8497                if (x - hs < hslack) {
8498                    hs = x - hslack;
8499                }
8500                if (x - hs > hspace - hslack) {
8501                    hs = x - (hspace - hslack);
8502                }
8503            }
8504        }
8505
8506        if (hs != mScrollX || vs != mScrollY) {
8507            if (mScroller == null) {
8508                scrollTo(hs, vs);
8509            } else {
8510                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
8511                int dx = hs - mScrollX;
8512                int dy = vs - mScrollY;
8513
8514                if (duration > ANIMATED_SCROLL_GAP) {
8515                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
8516                    awakenScrollBars(mScroller.getDuration());
8517                    invalidate();
8518                } else {
8519                    if (!mScroller.isFinished()) {
8520                        mScroller.abortAnimation();
8521                    }
8522
8523                    scrollBy(dx, dy);
8524                }
8525
8526                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
8527            }
8528
8529            changed = true;
8530        }
8531
8532        if (isFocused()) {
8533            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
8534            // requestRectangleOnScreen() is in terms of content coordinates.
8535
8536            // The offsets here are to ensure the rectangle we are using is
8537            // within our view bounds, in case the cursor is on the far left
8538            // or right.  If it isn't withing the bounds, then this request
8539            // will be ignored.
8540            if (mTempRect == null) mTempRect = new Rect();
8541            mTempRect.set(x - 2, top, x + 2, bottom);
8542            getInterestingRect(mTempRect, line);
8543            mTempRect.offset(mScrollX, mScrollY);
8544
8545            if (requestRectangleOnScreen(mTempRect)) {
8546                changed = true;
8547            }
8548        }
8549
8550        return changed;
8551    }
8552
8553    /**
8554     * Move the cursor, if needed, so that it is at an offset that is visible
8555     * to the user.  This will not move the cursor if it represents more than
8556     * one character (a selection range).  This will only work if the
8557     * TextView contains spannable text; otherwise it will do nothing.
8558     *
8559     * @return True if the cursor was actually moved, false otherwise.
8560     */
8561    public boolean moveCursorToVisibleOffset() {
8562        if (!(mText instanceof Spannable)) {
8563            return false;
8564        }
8565        int start = getSelectionStart();
8566        int end = getSelectionEnd();
8567        if (start != end) {
8568            return false;
8569        }
8570
8571        // First: make sure the line is visible on screen:
8572
8573        int line = mLayout.getLineForOffset(start);
8574
8575        final int top = mLayout.getLineTop(line);
8576        final int bottom = mLayout.getLineTop(line + 1);
8577        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
8578        int vslack = (bottom - top) / 2;
8579        if (vslack > vspace / 4) {
8580            vslack = vspace / 4;
8581        }
8582        final int vs = mScrollY;
8583
8584        if (top < (vs + vslack)) {
8585            line = mLayout.getLineForVertical(vs + vslack + (bottom - top));
8586        } else if (bottom > (vspace + vs - vslack)) {
8587            line = mLayout.getLineForVertical(vspace + vs - vslack - (bottom - top));
8588        }
8589
8590        // Next: make sure the character is visible on screen:
8591
8592        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
8593        final int hs = mScrollX;
8594        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
8595        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace + hs);
8596
8597        // line might contain bidirectional text
8598        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
8599        final int highChar = leftChar > rightChar ? leftChar : rightChar;
8600
8601        int newStart = start;
8602        if (newStart < lowChar) {
8603            newStart = lowChar;
8604        } else if (newStart > highChar) {
8605            newStart = highChar;
8606        }
8607
8608        if (newStart != start) {
8609            Selection.setSelection((Spannable) mText, newStart);
8610            return true;
8611        }
8612
8613        return false;
8614    }
8615
8616    @Override
8617    public void computeScroll() {
8618        if (mScroller != null) {
8619            if (mScroller.computeScrollOffset()) {
8620                mScrollX = mScroller.getCurrX();
8621                mScrollY = mScroller.getCurrY();
8622                invalidateParentCaches();
8623                postInvalidate();  // So we draw again
8624            }
8625        }
8626    }
8627
8628    private void getInterestingRect(Rect r, int line) {
8629        convertFromViewportToContentCoordinates(r);
8630
8631        // Rectangle can can be expanded on first and last line to take
8632        // padding into account.
8633        // TODO Take left/right padding into account too?
8634        if (line == 0) r.top -= getExtendedPaddingTop();
8635        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
8636    }
8637
8638    private void convertFromViewportToContentCoordinates(Rect r) {
8639        final int horizontalOffset = viewportToContentHorizontalOffset();
8640        r.left += horizontalOffset;
8641        r.right += horizontalOffset;
8642
8643        final int verticalOffset = viewportToContentVerticalOffset();
8644        r.top += verticalOffset;
8645        r.bottom += verticalOffset;
8646    }
8647
8648    int viewportToContentHorizontalOffset() {
8649        return getCompoundPaddingLeft() - mScrollX;
8650    }
8651
8652    int viewportToContentVerticalOffset() {
8653        int offset = getExtendedPaddingTop() - mScrollY;
8654        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
8655            offset += getVerticalOffset(false);
8656        }
8657        return offset;
8658    }
8659
8660    @Override
8661    public void debug(int depth) {
8662        super.debug(depth);
8663
8664        String output = debugIndent(depth);
8665        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
8666                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
8667                + "} ";
8668
8669        if (mText != null) {
8670
8671            output += "mText=\"" + mText + "\" ";
8672            if (mLayout != null) {
8673                output += "mLayout width=" + mLayout.getWidth()
8674                        + " height=" + mLayout.getHeight();
8675            }
8676        } else {
8677            output += "mText=NULL";
8678        }
8679        Log.d(VIEW_LOG_TAG, output);
8680    }
8681
8682    /**
8683     * Convenience for {@link Selection#getSelectionStart}.
8684     */
8685    @ViewDebug.ExportedProperty(category = "text")
8686    public int getSelectionStart() {
8687        return Selection.getSelectionStart(getText());
8688    }
8689
8690    /**
8691     * Convenience for {@link Selection#getSelectionEnd}.
8692     */
8693    @ViewDebug.ExportedProperty(category = "text")
8694    public int getSelectionEnd() {
8695        return Selection.getSelectionEnd(getText());
8696    }
8697
8698    /**
8699     * Return true iff there is a selection inside this text view.
8700     */
8701    public boolean hasSelection() {
8702        final int selectionStart = getSelectionStart();
8703        final int selectionEnd = getSelectionEnd();
8704
8705        return selectionStart >= 0 && selectionStart != selectionEnd;
8706    }
8707
8708    String getSelectedText() {
8709        if (!hasSelection()) {
8710            return null;
8711        }
8712
8713        final int start = getSelectionStart();
8714        final int end = getSelectionEnd();
8715        return String.valueOf(
8716                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
8717    }
8718
8719    /**
8720     * Sets the properties of this field (lines, horizontally scrolling,
8721     * transformation method) to be for a single-line input.
8722     *
8723     * @attr ref android.R.styleable#TextView_singleLine
8724     */
8725    public void setSingleLine() {
8726        setSingleLine(true);
8727    }
8728
8729    /**
8730     * Sets the properties of this field to transform input to ALL CAPS
8731     * display. This may use a "small caps" formatting if available.
8732     * This setting will be ignored if this field is editable or selectable.
8733     *
8734     * This call replaces the current transformation method. Disabling this
8735     * will not necessarily restore the previous behavior from before this
8736     * was enabled.
8737     *
8738     * @see #setTransformationMethod(TransformationMethod)
8739     * @attr ref android.R.styleable#TextView_textAllCaps
8740     */
8741    public void setAllCaps(boolean allCaps) {
8742        if (allCaps) {
8743            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
8744        } else {
8745            setTransformationMethod(null);
8746        }
8747    }
8748
8749    /**
8750     * If true, sets the properties of this field (number of lines, horizontally scrolling,
8751     * transformation method) to be for a single-line input; if false, restores these to the default
8752     * conditions.
8753     *
8754     * Note that the default conditions are not necessarily those that were in effect prior this
8755     * method, and you may want to reset these properties to your custom values.
8756     *
8757     * @attr ref android.R.styleable#TextView_singleLine
8758     */
8759    @android.view.RemotableViewMethod
8760    public void setSingleLine(boolean singleLine) {
8761        // Could be used, but may break backward compatibility.
8762        // if (mSingleLine == singleLine) return;
8763        setInputTypeSingleLine(singleLine);
8764        applySingleLine(singleLine, true, true);
8765    }
8766
8767    /**
8768     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
8769     * @param singleLine
8770     */
8771    private void setInputTypeSingleLine(boolean singleLine) {
8772        if (mEditor != null
8773                && (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS)
8774                        == EditorInfo.TYPE_CLASS_TEXT) {
8775            if (singleLine) {
8776                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
8777            } else {
8778                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
8779            }
8780        }
8781    }
8782
8783    private void applySingleLine(boolean singleLine, boolean applyTransformation,
8784            boolean changeMaxLines) {
8785        mSingleLine = singleLine;
8786        if (singleLine) {
8787            setLines(1);
8788            setHorizontallyScrolling(true);
8789            if (applyTransformation) {
8790                setTransformationMethod(SingleLineTransformationMethod.getInstance());
8791            }
8792        } else {
8793            if (changeMaxLines) {
8794                setMaxLines(Integer.MAX_VALUE);
8795            }
8796            setHorizontallyScrolling(false);
8797            if (applyTransformation) {
8798                setTransformationMethod(null);
8799            }
8800        }
8801    }
8802
8803    /**
8804     * Causes words in the text that are longer than the view's width
8805     * to be ellipsized instead of broken in the middle.  You may also
8806     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
8807     * to constrain the text to a single line.  Use <code>null</code>
8808     * to turn off ellipsizing.
8809     *
8810     * If {@link #setMaxLines} has been used to set two or more lines,
8811     * only {@link android.text.TextUtils.TruncateAt#END} and
8812     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
8813     * (other ellipsizing types will not do anything).
8814     *
8815     * @attr ref android.R.styleable#TextView_ellipsize
8816     */
8817    public void setEllipsize(TextUtils.TruncateAt where) {
8818        // TruncateAt is an enum. != comparison is ok between these singleton objects.
8819        if (mEllipsize != where) {
8820            mEllipsize = where;
8821
8822            if (mLayout != null) {
8823                nullLayouts();
8824                requestLayout();
8825                invalidate();
8826            }
8827        }
8828    }
8829
8830    /**
8831     * Sets how many times to repeat the marquee animation. Only applied if the
8832     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
8833     *
8834     * @see #getMarqueeRepeatLimit()
8835     *
8836     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
8837     */
8838    public void setMarqueeRepeatLimit(int marqueeLimit) {
8839        mMarqueeRepeatLimit = marqueeLimit;
8840    }
8841
8842    /**
8843     * Gets the number of times the marquee animation is repeated. Only meaningful if the
8844     * TextView has marquee enabled.
8845     *
8846     * @return the number of times the marquee animation is repeated. -1 if the animation
8847     * repeats indefinitely
8848     *
8849     * @see #setMarqueeRepeatLimit(int)
8850     *
8851     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
8852     */
8853    public int getMarqueeRepeatLimit() {
8854        return mMarqueeRepeatLimit;
8855    }
8856
8857    /**
8858     * Returns where, if anywhere, words that are longer than the view
8859     * is wide should be ellipsized.
8860     */
8861    @ViewDebug.ExportedProperty
8862    public TextUtils.TruncateAt getEllipsize() {
8863        return mEllipsize;
8864    }
8865
8866    /**
8867     * Set the TextView so that when it takes focus, all the text is
8868     * selected.
8869     *
8870     * @attr ref android.R.styleable#TextView_selectAllOnFocus
8871     */
8872    @android.view.RemotableViewMethod
8873    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
8874        createEditorIfNeeded();
8875        mEditor.mSelectAllOnFocus = selectAllOnFocus;
8876
8877        if (selectAllOnFocus && !(mText instanceof Spannable)) {
8878            setText(mText, BufferType.SPANNABLE);
8879        }
8880    }
8881
8882    /**
8883     * Set whether the cursor is visible. The default is true. Note that this property only
8884     * makes sense for editable TextView.
8885     *
8886     * @see #isCursorVisible()
8887     *
8888     * @attr ref android.R.styleable#TextView_cursorVisible
8889     */
8890    @android.view.RemotableViewMethod
8891    public void setCursorVisible(boolean visible) {
8892        if (visible && mEditor == null) return; // visible is the default value with no edit data
8893        createEditorIfNeeded();
8894        if (mEditor.mCursorVisible != visible) {
8895            mEditor.mCursorVisible = visible;
8896            invalidate();
8897
8898            mEditor.makeBlink();
8899
8900            // InsertionPointCursorController depends on mCursorVisible
8901            mEditor.prepareCursorControllers();
8902        }
8903    }
8904
8905    /**
8906     * @return whether or not the cursor is visible (assuming this TextView is editable)
8907     *
8908     * @see #setCursorVisible(boolean)
8909     *
8910     * @attr ref android.R.styleable#TextView_cursorVisible
8911     */
8912    public boolean isCursorVisible() {
8913        // true is the default value
8914        return mEditor == null ? true : mEditor.mCursorVisible;
8915    }
8916
8917    private boolean canMarquee() {
8918        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
8919        return width > 0 && (mLayout.getLineWidth(0) > width
8920                || (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null
8921                        && mSavedMarqueeModeLayout.getLineWidth(0) > width));
8922    }
8923
8924    private void startMarquee() {
8925        // Do not ellipsize EditText
8926        if (getKeyListener() != null) return;
8927
8928        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
8929            return;
8930        }
8931
8932        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected())
8933                && getLineCount() == 1 && canMarquee()) {
8934
8935            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8936                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
8937                final Layout tmp = mLayout;
8938                mLayout = mSavedMarqueeModeLayout;
8939                mSavedMarqueeModeLayout = tmp;
8940                setHorizontalFadingEdgeEnabled(true);
8941                requestLayout();
8942                invalidate();
8943            }
8944
8945            if (mMarquee == null) mMarquee = new Marquee(this);
8946            mMarquee.start(mMarqueeRepeatLimit);
8947        }
8948    }
8949
8950    private void stopMarquee() {
8951        if (mMarquee != null && !mMarquee.isStopped()) {
8952            mMarquee.stop();
8953        }
8954
8955        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
8956            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8957            final Layout tmp = mSavedMarqueeModeLayout;
8958            mSavedMarqueeModeLayout = mLayout;
8959            mLayout = tmp;
8960            setHorizontalFadingEdgeEnabled(false);
8961            requestLayout();
8962            invalidate();
8963        }
8964    }
8965
8966    private void startStopMarquee(boolean start) {
8967        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8968            if (start) {
8969                startMarquee();
8970            } else {
8971                stopMarquee();
8972            }
8973        }
8974    }
8975
8976    /**
8977     * This method is called when the text is changed, in case any subclasses
8978     * would like to know.
8979     *
8980     * Within <code>text</code>, the <code>lengthAfter</code> characters
8981     * beginning at <code>start</code> have just replaced old text that had
8982     * length <code>lengthBefore</code>. It is an error to attempt to make
8983     * changes to <code>text</code> from this callback.
8984     *
8985     * @param text The text the TextView is displaying
8986     * @param start The offset of the start of the range of the text that was
8987     * modified
8988     * @param lengthBefore The length of the former text that has been replaced
8989     * @param lengthAfter The length of the replacement modified text
8990     */
8991    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8992        // intentionally empty, template pattern method can be overridden by subclasses
8993    }
8994
8995    /**
8996     * This method is called when the selection has changed, in case any
8997     * subclasses would like to know.
8998     *
8999     * @param selStart The new selection start location.
9000     * @param selEnd The new selection end location.
9001     */
9002    protected void onSelectionChanged(int selStart, int selEnd) {
9003        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
9004    }
9005
9006    /**
9007     * Adds a TextWatcher to the list of those whose methods are called
9008     * whenever this TextView's text changes.
9009     * <p>
9010     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
9011     * not called after {@link #setText} calls.  Now, doing {@link #setText}
9012     * if there are any text changed listeners forces the buffer type to
9013     * Editable if it would not otherwise be and does call this method.
9014     */
9015    public void addTextChangedListener(TextWatcher watcher) {
9016        if (mListeners == null) {
9017            mListeners = new ArrayList<TextWatcher>();
9018        }
9019
9020        mListeners.add(watcher);
9021    }
9022
9023    /**
9024     * Removes the specified TextWatcher from the list of those whose
9025     * methods are called
9026     * whenever this TextView's text changes.
9027     */
9028    public void removeTextChangedListener(TextWatcher watcher) {
9029        if (mListeners != null) {
9030            int i = mListeners.indexOf(watcher);
9031
9032            if (i >= 0) {
9033                mListeners.remove(i);
9034            }
9035        }
9036    }
9037
9038    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
9039        if (mListeners != null) {
9040            final ArrayList<TextWatcher> list = mListeners;
9041            final int count = list.size();
9042            for (int i = 0; i < count; i++) {
9043                list.get(i).beforeTextChanged(text, start, before, after);
9044            }
9045        }
9046
9047        // The spans that are inside or intersect the modified region no longer make sense
9048        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
9049        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
9050    }
9051
9052    // Removes all spans that are inside or actually overlap the start..end range
9053    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
9054        if (!(mText instanceof Editable)) return;
9055        Editable text = (Editable) mText;
9056
9057        T[] spans = text.getSpans(start, end, type);
9058        final int length = spans.length;
9059        for (int i = 0; i < length; i++) {
9060            final int spanStart = text.getSpanStart(spans[i]);
9061            final int spanEnd = text.getSpanEnd(spans[i]);
9062            if (spanEnd == start || spanStart == end) break;
9063            text.removeSpan(spans[i]);
9064        }
9065    }
9066
9067    void removeAdjacentSuggestionSpans(final int pos) {
9068        if (!(mText instanceof Editable)) return;
9069        final Editable text = (Editable) mText;
9070
9071        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
9072        final int length = spans.length;
9073        for (int i = 0; i < length; i++) {
9074            final int spanStart = text.getSpanStart(spans[i]);
9075            final int spanEnd = text.getSpanEnd(spans[i]);
9076            if (spanEnd == pos || spanStart == pos) {
9077                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
9078                    text.removeSpan(spans[i]);
9079                }
9080            }
9081        }
9082    }
9083
9084    /**
9085     * Not private so it can be called from an inner class without going
9086     * through a thunk.
9087     */
9088    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
9089        if (mListeners != null) {
9090            final ArrayList<TextWatcher> list = mListeners;
9091            final int count = list.size();
9092            for (int i = 0; i < count; i++) {
9093                list.get(i).onTextChanged(text, start, before, after);
9094            }
9095        }
9096
9097        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
9098    }
9099
9100    /**
9101     * Not private so it can be called from an inner class without going
9102     * through a thunk.
9103     */
9104    void sendAfterTextChanged(Editable text) {
9105        if (mListeners != null) {
9106            final ArrayList<TextWatcher> list = mListeners;
9107            final int count = list.size();
9108            for (int i = 0; i < count; i++) {
9109                list.get(i).afterTextChanged(text);
9110            }
9111        }
9112
9113        // Always notify AutoFillManager - it will return right away if auto-fill is disabled.
9114        final AutoFillManager afm = mContext.getSystemService(AutoFillManager.class);
9115        if (afm != null) {
9116            if (DEBUG_AUTOFILL) {
9117                Log.v(LOG_TAG, "sendAfterTextChanged(): notify AFM for text=" + text);
9118            }
9119            afm.valueChanged(TextView.this);
9120        }
9121
9122        hideErrorIfUnchanged();
9123    }
9124
9125    void updateAfterEdit() {
9126        invalidate();
9127        int curs = getSelectionStart();
9128
9129        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
9130            registerForPreDraw();
9131        }
9132
9133        checkForResize();
9134
9135        if (curs >= 0) {
9136            mHighlightPathBogus = true;
9137            if (mEditor != null) mEditor.makeBlink();
9138            bringPointIntoView(curs);
9139        }
9140    }
9141
9142    /**
9143     * Not private so it can be called from an inner class without going
9144     * through a thunk.
9145     */
9146    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
9147        sLastCutCopyOrTextChangedTime = 0;
9148
9149        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
9150        if (ims == null || ims.mBatchEditNesting == 0) {
9151            updateAfterEdit();
9152        }
9153        if (ims != null) {
9154            ims.mContentChanged = true;
9155            if (ims.mChangedStart < 0) {
9156                ims.mChangedStart = start;
9157                ims.mChangedEnd = start + before;
9158            } else {
9159                ims.mChangedStart = Math.min(ims.mChangedStart, start);
9160                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
9161            }
9162            ims.mChangedDelta += after - before;
9163        }
9164        resetErrorChangedFlag();
9165        sendOnTextChanged(buffer, start, before, after);
9166        onTextChanged(buffer, start, before, after);
9167    }
9168
9169    /**
9170     * Not private so it can be called from an inner class without going
9171     * through a thunk.
9172     */
9173    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
9174        // XXX Make the start and end move together if this ends up
9175        // spending too much time invalidating.
9176
9177        boolean selChanged = false;
9178        int newSelStart = -1, newSelEnd = -1;
9179
9180        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
9181
9182        if (what == Selection.SELECTION_END) {
9183            selChanged = true;
9184            newSelEnd = newStart;
9185
9186            if (oldStart >= 0 || newStart >= 0) {
9187                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
9188                checkForResize();
9189                registerForPreDraw();
9190                if (mEditor != null) mEditor.makeBlink();
9191            }
9192        }
9193
9194        if (what == Selection.SELECTION_START) {
9195            selChanged = true;
9196            newSelStart = newStart;
9197
9198            if (oldStart >= 0 || newStart >= 0) {
9199                int end = Selection.getSelectionEnd(buf);
9200                invalidateCursor(end, oldStart, newStart);
9201            }
9202        }
9203
9204        if (selChanged) {
9205            mHighlightPathBogus = true;
9206            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
9207
9208            if ((buf.getSpanFlags(what) & Spanned.SPAN_INTERMEDIATE) == 0) {
9209                if (newSelStart < 0) {
9210                    newSelStart = Selection.getSelectionStart(buf);
9211                }
9212                if (newSelEnd < 0) {
9213                    newSelEnd = Selection.getSelectionEnd(buf);
9214                }
9215
9216                if (mEditor != null) {
9217                    mEditor.refreshTextActionMode();
9218                    if (!hasSelection()
9219                            && mEditor.getTextActionMode() == null && hasTransientState()) {
9220                        // User generated selection has been removed.
9221                        setHasTransientState(false);
9222                    }
9223                }
9224                onSelectionChanged(newSelStart, newSelEnd);
9225            }
9226        }
9227
9228        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle
9229                || what instanceof CharacterStyle) {
9230            if (ims == null || ims.mBatchEditNesting == 0) {
9231                invalidate();
9232                mHighlightPathBogus = true;
9233                checkForResize();
9234            } else {
9235                ims.mContentChanged = true;
9236            }
9237            if (mEditor != null) {
9238                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
9239                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
9240                mEditor.invalidateHandlesAndActionMode();
9241            }
9242        }
9243
9244        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
9245            mHighlightPathBogus = true;
9246            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
9247                ims.mSelectionModeChanged = true;
9248            }
9249
9250            if (Selection.getSelectionStart(buf) >= 0) {
9251                if (ims == null || ims.mBatchEditNesting == 0) {
9252                    invalidateCursor();
9253                } else {
9254                    ims.mCursorChanged = true;
9255                }
9256            }
9257        }
9258
9259        if (what instanceof ParcelableSpan) {
9260            // If this is a span that can be sent to a remote process,
9261            // the current extract editor would be interested in it.
9262            if (ims != null && ims.mExtractedTextRequest != null) {
9263                if (ims.mBatchEditNesting != 0) {
9264                    if (oldStart >= 0) {
9265                        if (ims.mChangedStart > oldStart) {
9266                            ims.mChangedStart = oldStart;
9267                        }
9268                        if (ims.mChangedStart > oldEnd) {
9269                            ims.mChangedStart = oldEnd;
9270                        }
9271                    }
9272                    if (newStart >= 0) {
9273                        if (ims.mChangedStart > newStart) {
9274                            ims.mChangedStart = newStart;
9275                        }
9276                        if (ims.mChangedStart > newEnd) {
9277                            ims.mChangedStart = newEnd;
9278                        }
9279                    }
9280                } else {
9281                    if (DEBUG_EXTRACT) {
9282                        Log.v(LOG_TAG, "Span change outside of batch: "
9283                                + oldStart + "-" + oldEnd + ","
9284                                + newStart + "-" + newEnd + " " + what);
9285                    }
9286                    ims.mContentChanged = true;
9287                }
9288            }
9289        }
9290
9291        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0
9292                && what instanceof SpellCheckSpan) {
9293            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
9294        }
9295    }
9296
9297    @Override
9298    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
9299        if (isTemporarilyDetached()) {
9300            // If we are temporarily in the detach state, then do nothing.
9301            super.onFocusChanged(focused, direction, previouslyFocusedRect);
9302            return;
9303        }
9304
9305        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
9306
9307        if (focused) {
9308            if (mText instanceof Spannable) {
9309                Spannable sp = (Spannable) mText;
9310                MetaKeyKeyListener.resetMetaState(sp);
9311            }
9312        }
9313
9314        startStopMarquee(focused);
9315
9316        if (mTransformation != null) {
9317            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
9318        }
9319
9320        super.onFocusChanged(focused, direction, previouslyFocusedRect);
9321    }
9322
9323    @Override
9324    public void onWindowFocusChanged(boolean hasWindowFocus) {
9325        super.onWindowFocusChanged(hasWindowFocus);
9326
9327        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
9328
9329        startStopMarquee(hasWindowFocus);
9330    }
9331
9332    @Override
9333    protected void onVisibilityChanged(View changedView, int visibility) {
9334        super.onVisibilityChanged(changedView, visibility);
9335        if (mEditor != null && visibility != VISIBLE) {
9336            mEditor.hideCursorAndSpanControllers();
9337            stopTextActionMode();
9338        }
9339    }
9340
9341    /**
9342     * Use {@link BaseInputConnection#removeComposingSpans
9343     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
9344     * state from this text view.
9345     */
9346    public void clearComposingText() {
9347        if (mText instanceof Spannable) {
9348            BaseInputConnection.removeComposingSpans((Spannable) mText);
9349        }
9350    }
9351
9352    @Override
9353    public void setSelected(boolean selected) {
9354        boolean wasSelected = isSelected();
9355
9356        super.setSelected(selected);
9357
9358        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
9359            if (selected) {
9360                startMarquee();
9361            } else {
9362                stopMarquee();
9363            }
9364        }
9365    }
9366
9367    @Override
9368    public boolean onTouchEvent(MotionEvent event) {
9369        final int action = event.getActionMasked();
9370        if (mEditor != null) {
9371            mEditor.onTouchEvent(event);
9372
9373            if (mEditor.mSelectionModifierCursorController != null
9374                    && mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
9375                return true;
9376            }
9377        }
9378
9379        final boolean superResult = super.onTouchEvent(event);
9380
9381        /*
9382         * Don't handle the release after a long press, because it will move the selection away from
9383         * whatever the menu action was trying to affect. If the long press should have triggered an
9384         * insertion action mode, we can now actually show it.
9385         */
9386        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
9387            mEditor.mDiscardNextActionUp = false;
9388
9389            if (mEditor.mIsInsertionActionModeStartPending) {
9390                mEditor.startInsertionActionMode();
9391                mEditor.mIsInsertionActionModeStartPending = false;
9392            }
9393            return superResult;
9394        }
9395
9396        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP)
9397                && (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
9398
9399        if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
9400                && mText instanceof Spannable && mLayout != null) {
9401            boolean handled = false;
9402
9403            if (mMovement != null) {
9404                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
9405            }
9406
9407            final boolean textIsSelectable = isTextSelectable();
9408            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
9409                // The LinkMovementMethod which should handle taps on links has not been installed
9410                // on non editable text that support text selection.
9411                // We reproduce its behavior here to open links for these.
9412                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
9413                    getSelectionEnd(), ClickableSpan.class);
9414
9415                if (links.length > 0) {
9416                    links[0].onClick(this);
9417                    handled = true;
9418                }
9419            }
9420
9421            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
9422                // Show the IME, except when selecting in read-only text.
9423                final InputMethodManager imm = InputMethodManager.peekInstance();
9424                viewClicked(imm);
9425                if (isTextEditable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9426                    imm.showSoftInput(this, 0);
9427                }
9428
9429                // The above condition ensures that the mEditor is not null
9430                mEditor.onTouchUpEvent(event);
9431
9432                handled = true;
9433            }
9434
9435            if (handled) {
9436                return true;
9437            }
9438        }
9439
9440        return superResult;
9441    }
9442
9443    @Override
9444    public boolean onGenericMotionEvent(MotionEvent event) {
9445        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
9446            try {
9447                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
9448                    return true;
9449                }
9450            } catch (AbstractMethodError ex) {
9451                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
9452                // Ignore its absence in case third party applications implemented the
9453                // interface directly.
9454            }
9455        }
9456        return super.onGenericMotionEvent(event);
9457    }
9458
9459    @Override
9460    protected void onCreateContextMenu(ContextMenu menu) {
9461        if (mEditor != null) {
9462            mEditor.onCreateContextMenu(menu);
9463        }
9464    }
9465
9466    @Override
9467    public boolean showContextMenu() {
9468        if (mEditor != null) {
9469            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
9470        }
9471        return super.showContextMenu();
9472    }
9473
9474    @Override
9475    public boolean showContextMenu(float x, float y) {
9476        if (mEditor != null) {
9477            mEditor.setContextMenuAnchor(x, y);
9478        }
9479        return super.showContextMenu(x, y);
9480    }
9481
9482    /**
9483     * @return True iff this TextView contains a text that can be edited, or if this is
9484     * a selectable TextView.
9485     */
9486    boolean isTextEditable() {
9487        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
9488    }
9489
9490    /**
9491     * Returns true, only while processing a touch gesture, if the initial
9492     * touch down event caused focus to move to the text view and as a result
9493     * its selection changed.  Only valid while processing the touch gesture
9494     * of interest, in an editable text view.
9495     */
9496    public boolean didTouchFocusSelect() {
9497        return mEditor != null && mEditor.mTouchFocusSelected;
9498    }
9499
9500    @Override
9501    public void cancelLongPress() {
9502        super.cancelLongPress();
9503        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
9504    }
9505
9506    @Override
9507    public boolean onTrackballEvent(MotionEvent event) {
9508        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
9509            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
9510                return true;
9511            }
9512        }
9513
9514        return super.onTrackballEvent(event);
9515    }
9516
9517    public void setScroller(Scroller s) {
9518        mScroller = s;
9519    }
9520
9521    @Override
9522    protected float getLeftFadingEdgeStrength() {
9523        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
9524            final Marquee marquee = mMarquee;
9525            if (marquee.shouldDrawLeftFade()) {
9526                return getHorizontalFadingEdgeStrength(marquee.getScroll(), 0.0f);
9527            } else {
9528                return 0.0f;
9529            }
9530        } else if (getLineCount() == 1) {
9531            final float lineLeft = getLayout().getLineLeft(0);
9532            if (lineLeft > mScrollX) return 0.0f;
9533            return getHorizontalFadingEdgeStrength(mScrollX, lineLeft);
9534        }
9535        return super.getLeftFadingEdgeStrength();
9536    }
9537
9538    @Override
9539    protected float getRightFadingEdgeStrength() {
9540        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
9541            final Marquee marquee = mMarquee;
9542            return getHorizontalFadingEdgeStrength(marquee.getMaxFadeScroll(), marquee.getScroll());
9543        } else if (getLineCount() == 1) {
9544            final float rightEdge = mScrollX +
9545                    (getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight());
9546            final float lineRight = getLayout().getLineRight(0);
9547            if (lineRight < rightEdge) return 0.0f;
9548            return getHorizontalFadingEdgeStrength(rightEdge, lineRight);
9549        }
9550        return super.getRightFadingEdgeStrength();
9551    }
9552
9553    /**
9554     * Calculates the fading edge strength as the ratio of the distance between two
9555     * horizontal positions to {@link View#getHorizontalFadingEdgeLength()}. Uses the absolute
9556     * value for the distance calculation.
9557     *
9558     * @param position1 A horizontal position.
9559     * @param position2 A horizontal position.
9560     * @return Fading edge strength between [0.0f, 1.0f].
9561     */
9562    @FloatRange(from = 0.0, to = 1.0)
9563    private float getHorizontalFadingEdgeStrength(float position1, float position2) {
9564        final int horizontalFadingEdgeLength = getHorizontalFadingEdgeLength();
9565        if (horizontalFadingEdgeLength == 0) return 0.0f;
9566        final float diff = Math.abs(position1 - position2);
9567        if (diff > horizontalFadingEdgeLength) return 1.0f;
9568        return diff / horizontalFadingEdgeLength;
9569    }
9570
9571    private boolean isMarqueeFadeEnabled() {
9572        return mEllipsize == TextUtils.TruncateAt.MARQUEE
9573                && mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
9574    }
9575
9576    @Override
9577    protected int computeHorizontalScrollRange() {
9578        if (mLayout != null) {
9579            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT
9580                    ? (int) mLayout.getLineWidth(0) : mLayout.getWidth();
9581        }
9582
9583        return super.computeHorizontalScrollRange();
9584    }
9585
9586    @Override
9587    protected int computeVerticalScrollRange() {
9588        if (mLayout != null) {
9589            return mLayout.getHeight();
9590        }
9591        return super.computeVerticalScrollRange();
9592    }
9593
9594    @Override
9595    protected int computeVerticalScrollExtent() {
9596        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
9597    }
9598
9599    @Override
9600    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
9601        super.findViewsWithText(outViews, searched, flags);
9602        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
9603                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
9604            String searchedLowerCase = searched.toString().toLowerCase();
9605            String textLowerCase = mText.toString().toLowerCase();
9606            if (textLowerCase.contains(searchedLowerCase)) {
9607                outViews.add(this);
9608            }
9609        }
9610    }
9611
9612    /**
9613     * Type of the text buffer that defines the characteristics of the text such as static,
9614     * styleable, or editable.
9615     */
9616    public enum BufferType {
9617        NORMAL, SPANNABLE, EDITABLE
9618    }
9619
9620    /**
9621     * Returns the TextView_textColor attribute from the TypedArray, if set, or
9622     * the TextAppearance_textColor from the TextView_textAppearance attribute,
9623     * if TextView_textColor was not set directly.
9624     *
9625     * @removed
9626     */
9627    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
9628        if (attrs == null) {
9629            // Preserve behavior prior to removal of this API.
9630            throw new NullPointerException();
9631        }
9632
9633        // It's not safe to use this method from apps. The parameter 'attrs'
9634        // must have been obtained using the TextView filter array which is not
9635        // available to the SDK. As such, we grab a default TypedArray with the
9636        // right filter instead here.
9637        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
9638        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
9639        if (colors == null) {
9640            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
9641            if (ap != 0) {
9642                final TypedArray appearance = context.obtainStyledAttributes(
9643                        ap, R.styleable.TextAppearance);
9644                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
9645                appearance.recycle();
9646            }
9647        }
9648        a.recycle();
9649
9650        return colors;
9651    }
9652
9653    /**
9654     * Returns the default color from the TextView_textColor attribute from the
9655     * AttributeSet, if set, or the default color from the
9656     * TextAppearance_textColor from the TextView_textAppearance attribute, if
9657     * TextView_textColor was not set directly.
9658     *
9659     * @removed
9660     */
9661    public static int getTextColor(Context context, TypedArray attrs, int def) {
9662        final ColorStateList colors = getTextColors(context, attrs);
9663        if (colors == null) {
9664            return def;
9665        } else {
9666            return colors.getDefaultColor();
9667        }
9668    }
9669
9670    @Override
9671    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
9672        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
9673            // Handle Ctrl-only shortcuts.
9674            switch (keyCode) {
9675                case KeyEvent.KEYCODE_A:
9676                    if (canSelectText()) {
9677                        return onTextContextMenuItem(ID_SELECT_ALL);
9678                    }
9679                    break;
9680                case KeyEvent.KEYCODE_Z:
9681                    if (canUndo()) {
9682                        return onTextContextMenuItem(ID_UNDO);
9683                    }
9684                    break;
9685                case KeyEvent.KEYCODE_X:
9686                    if (canCut()) {
9687                        return onTextContextMenuItem(ID_CUT);
9688                    }
9689                    break;
9690                case KeyEvent.KEYCODE_C:
9691                    if (canCopy()) {
9692                        return onTextContextMenuItem(ID_COPY);
9693                    }
9694                    break;
9695                case KeyEvent.KEYCODE_V:
9696                    if (canPaste()) {
9697                        return onTextContextMenuItem(ID_PASTE);
9698                    }
9699                    break;
9700            }
9701        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
9702            // Handle Ctrl-Shift shortcuts.
9703            switch (keyCode) {
9704                case KeyEvent.KEYCODE_Z:
9705                    if (canRedo()) {
9706                        return onTextContextMenuItem(ID_REDO);
9707                    }
9708                    break;
9709                case KeyEvent.KEYCODE_V:
9710                    if (canPaste()) {
9711                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
9712                    }
9713            }
9714        }
9715        return super.onKeyShortcut(keyCode, event);
9716    }
9717
9718    /**
9719     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
9720     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
9721     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
9722     * sufficient.
9723     */
9724    boolean canSelectText() {
9725        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
9726    }
9727
9728    /**
9729     * Test based on the <i>intrinsic</i> charateristics of the TextView.
9730     * The text must be spannable and the movement method must allow for arbitary selection.
9731     *
9732     * See also {@link #canSelectText()}.
9733     */
9734    boolean textCanBeSelected() {
9735        // prepareCursorController() relies on this method.
9736        // If you change this condition, make sure prepareCursorController is called anywhere
9737        // the value of this condition might be changed.
9738        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
9739        return isTextEditable()
9740                || (isTextSelectable() && mText instanceof Spannable && isEnabled());
9741    }
9742
9743    private Locale getTextServicesLocale(boolean allowNullLocale) {
9744        // Start fetching the text services locale asynchronously.
9745        updateTextServicesLocaleAsync();
9746        // If !allowNullLocale and there is no cached text services locale, just return the default
9747        // locale.
9748        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
9749                : mCurrentSpellCheckerLocaleCache;
9750    }
9751
9752    /**
9753     * This is a temporary method. Future versions may support multi-locale text.
9754     * Caveat: This method may not return the latest text services locale, but this should be
9755     * acceptable and it's more important to make this method asynchronous.
9756     *
9757     * @return The locale that should be used for a word iterator
9758     * in this TextView, based on the current spell checker settings,
9759     * the current IME's locale, or the system default locale.
9760     * Please note that a word iterator in this TextView is different from another word iterator
9761     * used by SpellChecker.java of TextView. This method should be used for the former.
9762     * @hide
9763     */
9764    // TODO: Support multi-locale
9765    // TODO: Update the text services locale immediately after the keyboard locale is switched
9766    // by catching intent of keyboard switch event
9767    public Locale getTextServicesLocale() {
9768        return getTextServicesLocale(false /* allowNullLocale */);
9769    }
9770
9771    /**
9772     * @return {@code true} if this TextView is specialized for showing and interacting with the
9773     * extracted text in a full-screen input method.
9774     * @hide
9775     */
9776    public boolean isInExtractedMode() {
9777        return false;
9778    }
9779
9780    /**
9781     * @return {@code true} if this widget supports auto-sizing text and has been configured to
9782     * auto-size.
9783     */
9784    private boolean isAutoSizeEnabled() {
9785        return supportsAutoSizeText() && mAutoSizeTextType != AUTO_SIZE_TEXT_TYPE_NONE;
9786    }
9787
9788    /**
9789     * @return {@code true} if this TextView supports auto-sizing text to fit within its container.
9790     * @hide
9791     */
9792    protected boolean supportsAutoSizeText() {
9793        return true;
9794    }
9795
9796    /**
9797     * This is a temporary method. Future versions may support multi-locale text.
9798     * Caveat: This method may not return the latest spell checker locale, but this should be
9799     * acceptable and it's more important to make this method asynchronous.
9800     *
9801     * @return The locale that should be used for a spell checker in this TextView,
9802     * based on the current spell checker settings, the current IME's locale, or the system default
9803     * locale.
9804     * @hide
9805     */
9806    public Locale getSpellCheckerLocale() {
9807        return getTextServicesLocale(true /* allowNullLocale */);
9808    }
9809
9810    private void updateTextServicesLocaleAsync() {
9811        // AsyncTask.execute() uses a serial executor which means we don't have
9812        // to lock around updateTextServicesLocaleLocked() to prevent it from
9813        // being executed n times in parallel.
9814        AsyncTask.execute(new Runnable() {
9815            @Override
9816            public void run() {
9817                updateTextServicesLocaleLocked();
9818            }
9819        });
9820    }
9821
9822    private void updateTextServicesLocaleLocked() {
9823        final TextServicesManager textServicesManager = (TextServicesManager)
9824                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
9825        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
9826        final Locale locale;
9827        if (subtype != null) {
9828            locale = subtype.getLocaleObject();
9829        } else {
9830            locale = null;
9831        }
9832        mCurrentSpellCheckerLocaleCache = locale;
9833    }
9834
9835    void onLocaleChanged() {
9836        mEditor.onLocaleChanged();
9837    }
9838
9839    /**
9840     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
9841     * Made available to achieve a consistent behavior.
9842     * @hide
9843     */
9844    public WordIterator getWordIterator() {
9845        if (mEditor != null) {
9846            return mEditor.getWordIterator();
9847        } else {
9848            return null;
9849        }
9850    }
9851
9852    /** @hide */
9853    @Override
9854    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
9855        super.onPopulateAccessibilityEventInternal(event);
9856
9857        final CharSequence text = getTextForAccessibility();
9858        if (!TextUtils.isEmpty(text)) {
9859            event.getText().add(text);
9860        }
9861    }
9862
9863    @Override
9864    public CharSequence getAccessibilityClassName() {
9865        return TextView.class.getName();
9866    }
9867
9868    @Override
9869    public void onProvideStructure(ViewStructure structure) {
9870        super.onProvideStructure(structure);
9871        onProvideAutoStructureForAssistOrAutoFill(structure, false);
9872    }
9873
9874    @Override
9875    public void onProvideAutoFillStructure(ViewStructure structure, int flags) {
9876        super.onProvideAutoFillStructure(structure, flags);
9877        onProvideAutoStructureForAssistOrAutoFill(structure, true);
9878    }
9879
9880    private void onProvideAutoStructureForAssistOrAutoFill(ViewStructure structure,
9881            boolean forAutoFill) {
9882        final boolean isPassword = hasPasswordTransformationMethod()
9883                || isPasswordInputType(getInputType());
9884        if (forAutoFill) {
9885            structure.setSanitized(mTextFromResource);
9886        }
9887
9888        if (!isPassword || forAutoFill) {
9889            if (mLayout == null) {
9890                assumeLayout();
9891            }
9892            Layout layout = mLayout;
9893            final int lineCount = layout.getLineCount();
9894            if (lineCount <= 1) {
9895                // Simple case: this is a single line.
9896                final CharSequence text = getText();
9897                structure.setText(text, getSelectionStart(), getSelectionEnd());
9898            } else {
9899                // Complex case: multi-line, could be scrolled or within a scroll container
9900                // so some lines are not visible.
9901                final int[] tmpCords = new int[2];
9902                getLocationInWindow(tmpCords);
9903                final int topWindowLocation = tmpCords[1];
9904                View root = this;
9905                ViewParent viewParent = getParent();
9906                while (viewParent instanceof View) {
9907                    root = (View) viewParent;
9908                    viewParent = root.getParent();
9909                }
9910                final int windowHeight = root.getHeight();
9911                final int topLine;
9912                final int bottomLine;
9913                if (topWindowLocation >= 0) {
9914                    // The top of the view is fully within its window; start text at line 0.
9915                    topLine = getLineAtCoordinateUnclamped(0);
9916                    bottomLine = getLineAtCoordinateUnclamped(windowHeight - 1);
9917                } else {
9918                    // The top of hte window has scrolled off the top of the window; figure out
9919                    // the starting line for this.
9920                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
9921                    bottomLine = getLineAtCoordinateUnclamped(windowHeight - 1 - topWindowLocation);
9922                }
9923                // We want to return some contextual lines above/below the lines that are
9924                // actually visible.
9925                int expandedTopLine = topLine - (bottomLine - topLine) / 2;
9926                if (expandedTopLine < 0) {
9927                    expandedTopLine = 0;
9928                }
9929                int expandedBottomLine = bottomLine + (bottomLine - topLine) / 2;
9930                if (expandedBottomLine >= lineCount) {
9931                    expandedBottomLine = lineCount - 1;
9932                }
9933                // Convert lines into character offsets.
9934                int expandedTopChar = layout.getLineStart(expandedTopLine);
9935                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
9936                // Take into account selection -- if there is a selection, we need to expand
9937                // the text we are returning to include that selection.
9938                final int selStart = getSelectionStart();
9939                final int selEnd = getSelectionEnd();
9940                if (selStart < selEnd) {
9941                    if (selStart < expandedTopChar) {
9942                        expandedTopChar = selStart;
9943                    }
9944                    if (selEnd > expandedBottomChar) {
9945                        expandedBottomChar = selEnd;
9946                    }
9947                }
9948                // Get the text and trim it to the range we are reporting.
9949                CharSequence text = getText();
9950                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
9951                    text = text.subSequence(expandedTopChar, expandedBottomChar);
9952                }
9953                structure.setText(text, selStart - expandedTopChar, selEnd - expandedTopChar);
9954                final int[] lineOffsets = new int[bottomLine - topLine + 1];
9955                final int[] lineBaselines = new int[bottomLine - topLine + 1];
9956                final int baselineOffset = getBaselineOffset();
9957                for (int i = topLine; i <= bottomLine; i++) {
9958                    lineOffsets[i - topLine] = layout.getLineStart(i);
9959                    lineBaselines[i - topLine] = layout.getLineBaseline(i) + baselineOffset;
9960                }
9961                structure.setTextLines(lineOffsets, lineBaselines);
9962            }
9963
9964            // Extract style information that applies to the TextView as a whole.
9965            int style = 0;
9966            int typefaceStyle = getTypefaceStyle();
9967            if ((typefaceStyle & Typeface.BOLD) != 0) {
9968                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9969            }
9970            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9971                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9972            }
9973
9974            // Global styles can also be set via TextView.setPaintFlags().
9975            int paintFlags = mTextPaint.getFlags();
9976            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9977                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9978            }
9979            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9980                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9981            }
9982            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9983                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9984            }
9985
9986            // TextView does not have its own text background color. A background is either part
9987            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9988            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9989                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9990        }
9991        structure.setHint(getHint());
9992    }
9993
9994    // TODO(b/33197203): add unit/CTS tests for auto-fill methods
9995
9996    @Override
9997    public void autoFill(AutoFillValue value) {
9998        final CharSequence text = value.getTextValue();
9999
10000        if (text != null && isTextEditable()) {
10001            setText(text, mBufferType, true, 0);
10002        }
10003    }
10004
10005    @Override
10006    @Nullable
10007    public AutoFillType getAutoFillType() {
10008        return isTextEditable() ? AutoFillType.forText(getInputType()) : null;
10009    }
10010
10011    @Override
10012    @Nullable
10013    public AutoFillValue getAutoFillValue() {
10014        return isTextEditable() ? AutoFillValue.forText(getText()) : null;
10015    }
10016
10017    /** @hide */
10018    @Override
10019    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
10020        super.onInitializeAccessibilityEventInternal(event);
10021
10022        final boolean isPassword = hasPasswordTransformationMethod();
10023        event.setPassword(isPassword);
10024
10025        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
10026            event.setFromIndex(Selection.getSelectionStart(mText));
10027            event.setToIndex(Selection.getSelectionEnd(mText));
10028            event.setItemCount(mText.length());
10029        }
10030    }
10031
10032    /** @hide */
10033    @Override
10034    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
10035        super.onInitializeAccessibilityNodeInfoInternal(info);
10036
10037        final boolean isPassword = hasPasswordTransformationMethod();
10038        info.setPassword(isPassword);
10039        info.setText(getTextForAccessibility());
10040        info.setHintText(mHint);
10041        info.setShowingHintText(isShowingHint());
10042
10043        if (mBufferType == BufferType.EDITABLE) {
10044            info.setEditable(true);
10045            if (isEnabled()) {
10046                info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SET_TEXT);
10047            }
10048        }
10049
10050        if (mEditor != null) {
10051            info.setInputType(mEditor.mInputType);
10052
10053            if (mEditor.mError != null) {
10054                info.setContentInvalid(true);
10055                info.setError(mEditor.mError);
10056            }
10057        }
10058
10059        if (!TextUtils.isEmpty(mText)) {
10060            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
10061            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
10062            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
10063                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
10064                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
10065                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
10066                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
10067            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
10068            info.setAvailableExtraData(
10069                    Arrays.asList(EXTRA_DATA_TEXT_CHARACTER_LOCATION_KEY));
10070        }
10071
10072        if (isFocused()) {
10073            if (canCopy()) {
10074                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
10075            }
10076            if (canPaste()) {
10077                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
10078            }
10079            if (canCut()) {
10080                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
10081            }
10082            if (canShare()) {
10083                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
10084                        ACCESSIBILITY_ACTION_SHARE,
10085                        getResources().getString(com.android.internal.R.string.share)));
10086            }
10087            if (canProcessText()) {  // also implies mEditor is not null.
10088                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
10089            }
10090        }
10091
10092        // Check for known input filter types.
10093        final int numFilters = mFilters.length;
10094        for (int i = 0; i < numFilters; i++) {
10095            final InputFilter filter = mFilters[i];
10096            if (filter instanceof InputFilter.LengthFilter) {
10097                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
10098            }
10099        }
10100
10101        if (!isSingleLine()) {
10102            info.setMultiLine(true);
10103        }
10104    }
10105
10106    @Override
10107    public void addExtraDataToAccessibilityNodeInfo(
10108            AccessibilityNodeInfo info, String extraDataKey, Bundle arguments) {
10109        // The only extra data we support requires arguments.
10110        if (arguments == null) {
10111            return;
10112        }
10113        if (extraDataKey.equals(EXTRA_DATA_TEXT_CHARACTER_LOCATION_KEY)) {
10114            int positionInfoStartIndex = arguments.getInt(
10115                    EXTRA_DATA_TEXT_CHARACTER_LOCATION_ARG_START_INDEX, -1);
10116            int positionInfoLength = arguments.getInt(
10117                    EXTRA_DATA_TEXT_CHARACTER_LOCATION_ARG_LENGTH, -1);
10118            if ((positionInfoLength <= 0) || (positionInfoStartIndex < 0)
10119                    || (positionInfoStartIndex >= mText.length())) {
10120                Log.e(LOG_TAG, "Invalid arguments for accessibility character locations");
10121                return;
10122            }
10123            RectF[] boundingRects = new RectF[positionInfoLength];
10124            final CursorAnchorInfo.Builder builder = new CursorAnchorInfo.Builder();
10125            populateCharacterBounds(builder, positionInfoStartIndex,
10126                    positionInfoStartIndex + positionInfoLength,
10127                    viewportToContentHorizontalOffset(), viewportToContentVerticalOffset());
10128            CursorAnchorInfo cursorAnchorInfo = builder.setMatrix(null).build();
10129            if (mTempRect == null) mTempRect = new Rect();
10130            Rect viewBoundsInScreen = mTempRect;
10131            info.getBoundsInScreen(viewBoundsInScreen);
10132            for (int i = 0; i < positionInfoLength; i++) {
10133                int flags = cursorAnchorInfo.getCharacterBoundsFlags(positionInfoStartIndex + i);
10134                if ((flags & FLAG_HAS_VISIBLE_REGION) == FLAG_HAS_VISIBLE_REGION) {
10135                    RectF bounds = cursorAnchorInfo
10136                            .getCharacterBounds(positionInfoStartIndex + i);
10137                    if (bounds != null) {
10138                        bounds.offset(viewBoundsInScreen.left, viewBoundsInScreen.top);
10139                        boundingRects[i] = bounds;
10140                    }
10141                }
10142            }
10143            info.getExtras().putParcelableArray(extraDataKey, boundingRects);
10144        }
10145    }
10146
10147    /**
10148     * Populate requested character bounds in a {@link CursorAnchorInfo.Builder}
10149     *
10150     * @param builder The builder to populate
10151     * @param startIndex The starting character index to populate
10152     * @param endIndex The ending character index to populate
10153     * @param viewportToContentHorizontalOffset The horizontal offset from the viewport to the
10154     * content
10155     * @param viewportToContentVerticalOffset The vertical offset from the viewport to the content
10156     * @hide
10157     */
10158    public void populateCharacterBounds(CursorAnchorInfo.Builder builder,
10159            int startIndex, int endIndex, float viewportToContentHorizontalOffset,
10160            float viewportToContentVerticalOffset) {
10161        final int minLine = mLayout.getLineForOffset(startIndex);
10162        final int maxLine = mLayout.getLineForOffset(endIndex - 1);
10163        for (int line = minLine; line <= maxLine; ++line) {
10164            final int lineStart = mLayout.getLineStart(line);
10165            final int lineEnd = mLayout.getLineEnd(line);
10166            final int offsetStart = Math.max(lineStart, startIndex);
10167            final int offsetEnd = Math.min(lineEnd, endIndex);
10168            final boolean ltrLine =
10169                    mLayout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT;
10170            final float[] widths = new float[offsetEnd - offsetStart];
10171            mLayout.getPaint().getTextWidths(mText, offsetStart, offsetEnd, widths);
10172            final float top = mLayout.getLineTop(line);
10173            final float bottom = mLayout.getLineBottom(line);
10174            for (int offset = offsetStart; offset < offsetEnd; ++offset) {
10175                final float charWidth = widths[offset - offsetStart];
10176                final boolean isRtl = mLayout.isRtlCharAt(offset);
10177                final float primary = mLayout.getPrimaryHorizontal(offset);
10178                final float secondary = mLayout.getSecondaryHorizontal(offset);
10179                // TODO: This doesn't work perfectly for text with custom styles and
10180                // TAB chars.
10181                final float left;
10182                final float right;
10183                if (ltrLine) {
10184                    if (isRtl) {
10185                        left = secondary - charWidth;
10186                        right = secondary;
10187                    } else {
10188                        left = primary;
10189                        right = primary + charWidth;
10190                    }
10191                } else {
10192                    if (!isRtl) {
10193                        left = secondary;
10194                        right = secondary + charWidth;
10195                    } else {
10196                        left = primary - charWidth;
10197                        right = primary;
10198                    }
10199                }
10200                // TODO: Check top-right and bottom-left as well.
10201                final float localLeft = left + viewportToContentHorizontalOffset;
10202                final float localRight = right + viewportToContentHorizontalOffset;
10203                final float localTop = top + viewportToContentVerticalOffset;
10204                final float localBottom = bottom + viewportToContentVerticalOffset;
10205                final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop);
10206                final boolean isBottomRightVisible =
10207                        isPositionVisible(localRight, localBottom);
10208                int characterBoundsFlags = 0;
10209                if (isTopLeftVisible || isBottomRightVisible) {
10210                    characterBoundsFlags |= FLAG_HAS_VISIBLE_REGION;
10211                }
10212                if (!isTopLeftVisible || !isBottomRightVisible) {
10213                    characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION;
10214                }
10215                if (isRtl) {
10216                    characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL;
10217                }
10218                // Here offset is the index in Java chars.
10219                builder.addCharacterBounds(offset, localLeft, localTop, localRight,
10220                        localBottom, characterBoundsFlags);
10221            }
10222        }
10223    }
10224
10225    /**
10226     * @hide
10227     */
10228    public boolean isPositionVisible(final float positionX, final float positionY) {
10229        synchronized (TEMP_POSITION) {
10230            final float[] position = TEMP_POSITION;
10231            position[0] = positionX;
10232            position[1] = positionY;
10233            View view = this;
10234
10235            while (view != null) {
10236                if (view != this) {
10237                    // Local scroll is already taken into account in positionX/Y
10238                    position[0] -= view.getScrollX();
10239                    position[1] -= view.getScrollY();
10240                }
10241
10242                if (position[0] < 0 || position[1] < 0 || position[0] > view.getWidth()
10243                        || position[1] > view.getHeight()) {
10244                    return false;
10245                }
10246
10247                if (!view.getMatrix().isIdentity()) {
10248                    view.getMatrix().mapPoints(position);
10249                }
10250
10251                position[0] += view.getLeft();
10252                position[1] += view.getTop();
10253
10254                final ViewParent parent = view.getParent();
10255                if (parent instanceof View) {
10256                    view = (View) parent;
10257                } else {
10258                    // We've reached the ViewRoot, stop iterating
10259                    view = null;
10260                }
10261            }
10262        }
10263
10264        // We've been able to walk up the view hierarchy and the position was never clipped
10265        return true;
10266    }
10267
10268    /**
10269     * Performs an accessibility action after it has been offered to the
10270     * delegate.
10271     *
10272     * @hide
10273     */
10274    @Override
10275    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
10276        if (mEditor != null
10277                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
10278            return true;
10279        }
10280        switch (action) {
10281            case AccessibilityNodeInfo.ACTION_CLICK: {
10282                return performAccessibilityActionClick(arguments);
10283            }
10284            case AccessibilityNodeInfo.ACTION_COPY: {
10285                if (isFocused() && canCopy()) {
10286                    if (onTextContextMenuItem(ID_COPY)) {
10287                        return true;
10288                    }
10289                }
10290            } return false;
10291            case AccessibilityNodeInfo.ACTION_PASTE: {
10292                if (isFocused() && canPaste()) {
10293                    if (onTextContextMenuItem(ID_PASTE)) {
10294                        return true;
10295                    }
10296                }
10297            } return false;
10298            case AccessibilityNodeInfo.ACTION_CUT: {
10299                if (isFocused() && canCut()) {
10300                    if (onTextContextMenuItem(ID_CUT)) {
10301                        return true;
10302                    }
10303                }
10304            } return false;
10305            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
10306                ensureIterableTextForAccessibilitySelectable();
10307                CharSequence text = getIterableTextForAccessibility();
10308                if (text == null) {
10309                    return false;
10310                }
10311                final int start = (arguments != null) ? arguments.getInt(
10312                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
10313                final int end = (arguments != null) ? arguments.getInt(
10314                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
10315                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
10316                    // No arguments clears the selection.
10317                    if (start == end && end == -1) {
10318                        Selection.removeSelection((Spannable) text);
10319                        return true;
10320                    }
10321                    if (start >= 0 && start <= end && end <= text.length()) {
10322                        Selection.setSelection((Spannable) text, start, end);
10323                        // Make sure selection mode is engaged.
10324                        if (mEditor != null) {
10325                            mEditor.startSelectionActionModeAsync();
10326                        }
10327                        return true;
10328                    }
10329                }
10330            } return false;
10331            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
10332            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
10333                ensureIterableTextForAccessibilitySelectable();
10334                return super.performAccessibilityActionInternal(action, arguments);
10335            }
10336            case ACCESSIBILITY_ACTION_SHARE: {
10337                if (isFocused() && canShare()) {
10338                    if (onTextContextMenuItem(ID_SHARE)) {
10339                        return true;
10340                    }
10341                }
10342            } return false;
10343            case AccessibilityNodeInfo.ACTION_SET_TEXT: {
10344                if (!isEnabled() || (mBufferType != BufferType.EDITABLE)) {
10345                    return false;
10346                }
10347                CharSequence text = (arguments != null) ? arguments.getCharSequence(
10348                        AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE) : null;
10349                setText(text);
10350                if (mText != null) {
10351                    int updatedTextLength = mText.length();
10352                    if (updatedTextLength > 0) {
10353                        Selection.setSelection((Spannable) mText, updatedTextLength);
10354                    }
10355                }
10356            } return true;
10357            default: {
10358                return super.performAccessibilityActionInternal(action, arguments);
10359            }
10360        }
10361    }
10362
10363    private boolean performAccessibilityActionClick(Bundle arguments) {
10364        boolean handled = false;
10365
10366        if (!isEnabled()) {
10367            return false;
10368        }
10369
10370        if (isClickable() || isLongClickable()) {
10371            // Simulate View.onTouchEvent for an ACTION_UP event
10372            if (isFocusable() && !isFocused()) {
10373                requestFocus();
10374            }
10375
10376            performClick();
10377            handled = true;
10378        }
10379
10380        // Show the IME, except when selecting in read-only text.
10381        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
10382                && (isTextEditable() || isTextSelectable()) && isFocused()) {
10383            final InputMethodManager imm = InputMethodManager.peekInstance();
10384            viewClicked(imm);
10385            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
10386                handled |= imm.showSoftInput(this, 0);
10387            }
10388        }
10389
10390        return handled;
10391    }
10392
10393    private boolean hasSpannableText() {
10394        return mText != null && mText instanceof Spannable;
10395    }
10396
10397    /** @hide */
10398    @Override
10399    public void sendAccessibilityEventInternal(int eventType) {
10400        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
10401            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
10402        }
10403
10404        // Do not send scroll events since first they are not interesting for
10405        // accessibility and second such events a generated too frequently.
10406        // For details see the implementation of bringTextIntoView().
10407        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
10408            return;
10409        }
10410        super.sendAccessibilityEventInternal(eventType);
10411    }
10412
10413    /**
10414     * Returns the text that should be exposed to accessibility services.
10415     * <p>
10416     * This approximates what is displayed visually. If the user has specified
10417     * that accessibility services should speak passwords, this method will
10418     * bypass any password transformation method and return unobscured text.
10419     *
10420     * @return the text that should be exposed to accessibility services, may
10421     *         be {@code null} if no text is set
10422     */
10423    @Nullable
10424    private CharSequence getTextForAccessibility() {
10425        // If the text is empty, we must be showing the hint text.
10426        if (TextUtils.isEmpty(mText)) {
10427            return mHint;
10428        }
10429
10430        // Otherwise, return whatever text is being displayed.
10431        return mTransformed;
10432    }
10433
10434    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
10435            int fromIndex, int removedCount, int addedCount) {
10436        AccessibilityEvent event =
10437                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
10438        event.setFromIndex(fromIndex);
10439        event.setRemovedCount(removedCount);
10440        event.setAddedCount(addedCount);
10441        event.setBeforeText(beforeText);
10442        sendAccessibilityEventUnchecked(event);
10443    }
10444
10445    /**
10446     * Returns whether this text view is a current input method target.  The
10447     * default implementation just checks with {@link InputMethodManager}.
10448     */
10449    public boolean isInputMethodTarget() {
10450        InputMethodManager imm = InputMethodManager.peekInstance();
10451        return imm != null && imm.isActive(this);
10452    }
10453
10454    static final int ID_SELECT_ALL = android.R.id.selectAll;
10455    static final int ID_UNDO = android.R.id.undo;
10456    static final int ID_REDO = android.R.id.redo;
10457    static final int ID_CUT = android.R.id.cut;
10458    static final int ID_COPY = android.R.id.copy;
10459    static final int ID_PASTE = android.R.id.paste;
10460    static final int ID_SHARE = android.R.id.shareText;
10461    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
10462    static final int ID_REPLACE = android.R.id.replaceText;
10463    static final int ID_ASSIST = android.R.id.textAssist;
10464
10465    /**
10466     * Called when a context menu option for the text view is selected.  Currently
10467     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
10468     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
10469     *
10470     * @return true if the context menu item action was performed.
10471     */
10472    public boolean onTextContextMenuItem(int id) {
10473        int min = 0;
10474        int max = mText.length();
10475
10476        if (isFocused()) {
10477            final int selStart = getSelectionStart();
10478            final int selEnd = getSelectionEnd();
10479
10480            min = Math.max(0, Math.min(selStart, selEnd));
10481            max = Math.max(0, Math.max(selStart, selEnd));
10482        }
10483
10484        switch (id) {
10485            case ID_SELECT_ALL:
10486                selectAllText();
10487                return true;
10488
10489            case ID_UNDO:
10490                if (mEditor != null) {
10491                    mEditor.undo();
10492                }
10493                return true;  // Returns true even if nothing was undone.
10494
10495            case ID_REDO:
10496                if (mEditor != null) {
10497                    mEditor.redo();
10498                }
10499                return true;  // Returns true even if nothing was undone.
10500
10501            case ID_PASTE:
10502                paste(min, max, true /* withFormatting */);
10503                return true;
10504
10505            case ID_PASTE_AS_PLAIN_TEXT:
10506                paste(min, max, false /* withFormatting */);
10507                return true;
10508
10509            case ID_CUT:
10510                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
10511                deleteText_internal(min, max);
10512                return true;
10513
10514            case ID_COPY:
10515                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
10516                stopTextActionMode();
10517                return true;
10518
10519            case ID_REPLACE:
10520                if (mEditor != null) {
10521                    mEditor.replace();
10522                }
10523                return true;
10524
10525            case ID_SHARE:
10526                shareSelectedText();
10527                return true;
10528        }
10529        return false;
10530    }
10531
10532    CharSequence getTransformedText(int start, int end) {
10533        return removeSuggestionSpans(mTransformed.subSequence(start, end));
10534    }
10535
10536    @Override
10537    public boolean performLongClick() {
10538        boolean handled = false;
10539
10540        if (mEditor != null) {
10541            mEditor.mIsBeingLongClicked = true;
10542        }
10543
10544        if (super.performLongClick()) {
10545            handled = true;
10546        }
10547
10548        if (mEditor != null) {
10549            handled |= mEditor.performLongClick(handled);
10550            mEditor.mIsBeingLongClicked = false;
10551        }
10552
10553        if (handled) {
10554            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
10555            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
10556        } else {
10557            MetricsLogger.action(
10558                    mContext,
10559                    MetricsEvent.TEXT_LONGPRESS,
10560                    TextViewMetrics.SUBTYPE_LONG_PRESS_OTHER);
10561        }
10562
10563        return handled;
10564    }
10565
10566    @Override
10567    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
10568        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
10569        if (mEditor != null) {
10570            mEditor.onScrollChanged();
10571        }
10572    }
10573
10574    /**
10575     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
10576     * by the IME or by the spell checker as the user types. This is done by adding
10577     * {@link SuggestionSpan}s to the text.
10578     *
10579     * When suggestions are enabled (default), this list of suggestions will be displayed when the
10580     * user asks for them on these parts of the text. This value depends on the inputType of this
10581     * TextView.
10582     *
10583     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
10584     *
10585     * In addition, the type variation must be one of
10586     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
10587     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
10588     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
10589     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
10590     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
10591     *
10592     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
10593     *
10594     * @return true if the suggestions popup window is enabled, based on the inputType.
10595     */
10596    public boolean isSuggestionsEnabled() {
10597        if (mEditor == null) return false;
10598        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
10599            return false;
10600        }
10601        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
10602
10603        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
10604        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL
10605                || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT
10606                || variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE
10607                || variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE
10608                || variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
10609    }
10610
10611    /**
10612     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
10613     * selection is initiated in this View.
10614     *
10615     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
10616     * Paste, Replace and Share actions, depending on what this View supports.
10617     *
10618     * <p>A custom implementation can add new entries in the default menu in its
10619     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
10620     * method. The default actions can also be removed from the menu using
10621     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
10622     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
10623     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
10624     *
10625     * <p>Returning false from
10626     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
10627     * will prevent the action mode from being started.
10628     *
10629     * <p>Action click events should be handled by the custom implementation of
10630     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
10631     * android.view.MenuItem)}.
10632     *
10633     * <p>Note that text selection mode is not started when a TextView receives focus and the
10634     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
10635     * that case, to allow for quick replacement.
10636     */
10637    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
10638        createEditorIfNeeded();
10639        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
10640    }
10641
10642    /**
10643     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
10644     *
10645     * @return The current custom selection callback.
10646     */
10647    public ActionMode.Callback getCustomSelectionActionModeCallback() {
10648        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
10649    }
10650
10651    /**
10652     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
10653     * insertion is initiated in this View.
10654     * The standard implementation populates the menu with a subset of Select All,
10655     * Paste and Replace actions, depending on what this View supports.
10656     *
10657     * <p>A custom implementation can add new entries in the default menu in its
10658     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
10659     * android.view.Menu)} method. The default actions can also be removed from the menu using
10660     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
10661     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
10662     *
10663     * <p>Returning false from
10664     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
10665     * android.view.Menu)} will prevent the action mode from being started.</p>
10666     *
10667     * <p>Action click events should be handled by the custom implementation of
10668     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
10669     * android.view.MenuItem)}.</p>
10670     *
10671     * <p>Note that text insertion mode is not started when a TextView receives focus and the
10672     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
10673     */
10674    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
10675        createEditorIfNeeded();
10676        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
10677    }
10678
10679    /**
10680     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
10681     *
10682     * @return The current custom insertion callback.
10683     */
10684    public ActionMode.Callback getCustomInsertionActionModeCallback() {
10685        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
10686    }
10687
10688    /**
10689     * Sets the {@link TextClassifier} for this TextView.
10690     */
10691    public void setTextClassifier(@Nullable TextClassifier textClassifier) {
10692        mTextClassifier = textClassifier;
10693    }
10694
10695    /**
10696     * Returns the {@link TextClassifier} used by this TextView.
10697     * If no TextClassifier has been set, this TextView uses the default set by the
10698     * {@link TextClassificationManager}.
10699     */
10700    @NonNull
10701    public TextClassifier getTextClassifier() {
10702        if (mTextClassifier == null) {
10703            TextClassificationManager tcm =
10704                    mContext.getSystemService(TextClassificationManager.class);
10705            if (tcm != null) {
10706                mTextClassifier = tcm.getDefaultTextClassifier();
10707            } else {
10708                mTextClassifier = TextClassifier.NO_OP;
10709            }
10710        }
10711        return mTextClassifier;
10712    }
10713
10714    /**
10715     * @hide
10716     */
10717    protected void stopTextActionMode() {
10718        if (mEditor != null) {
10719            mEditor.stopTextActionMode();
10720        }
10721    }
10722
10723    boolean canUndo() {
10724        return mEditor != null && mEditor.canUndo();
10725    }
10726
10727    boolean canRedo() {
10728        return mEditor != null && mEditor.canRedo();
10729    }
10730
10731    boolean canCut() {
10732        if (hasPasswordTransformationMethod()) {
10733            return false;
10734        }
10735
10736        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null
10737                && mEditor.mKeyListener != null) {
10738            return true;
10739        }
10740
10741        return false;
10742    }
10743
10744    boolean canCopy() {
10745        if (hasPasswordTransformationMethod()) {
10746            return false;
10747        }
10748
10749        if (mText.length() > 0 && hasSelection() && mEditor != null) {
10750            return true;
10751        }
10752
10753        return false;
10754    }
10755
10756    boolean canShare() {
10757        if (!getContext().canStartActivityForResult() || !isDeviceProvisioned()) {
10758            return false;
10759        }
10760        return canCopy();
10761    }
10762
10763    boolean isDeviceProvisioned() {
10764        if (mDeviceProvisionedState == DEVICE_PROVISIONED_UNKNOWN) {
10765            mDeviceProvisionedState = Settings.Global.getInt(
10766                    mContext.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0
10767                    ? DEVICE_PROVISIONED_YES
10768                    : DEVICE_PROVISIONED_NO;
10769        }
10770        return mDeviceProvisionedState == DEVICE_PROVISIONED_YES;
10771    }
10772
10773    boolean canPaste() {
10774        return (mText instanceof Editable
10775                && mEditor != null && mEditor.mKeyListener != null
10776                && getSelectionStart() >= 0
10777                && getSelectionEnd() >= 0
10778                && ((ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE))
10779                        .hasPrimaryClip());
10780    }
10781
10782    boolean canProcessText() {
10783        if (getId() == View.NO_ID) {
10784            return false;
10785        }
10786        return canShare();
10787    }
10788
10789    boolean canSelectAllText() {
10790        return canSelectText() && !hasPasswordTransformationMethod()
10791                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
10792    }
10793
10794    boolean selectAllText() {
10795        final int length = mText.length();
10796        Selection.setSelection((Spannable) mText, 0, length);
10797        return length > 0;
10798    }
10799
10800    void replaceSelectionWithText(CharSequence text) {
10801        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
10802    }
10803
10804    /**
10805     * Paste clipboard content between min and max positions.
10806     */
10807    private void paste(int min, int max, boolean withFormatting) {
10808        ClipboardManager clipboard =
10809                (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
10810        ClipData clip = clipboard.getPrimaryClip();
10811        if (clip != null) {
10812            boolean didFirst = false;
10813            for (int i = 0; i < clip.getItemCount(); i++) {
10814                final CharSequence paste;
10815                if (withFormatting) {
10816                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
10817                } else {
10818                    // Get an item as text and remove all spans by toString().
10819                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
10820                    paste = (text instanceof Spanned) ? text.toString() : text;
10821                }
10822                if (paste != null) {
10823                    if (!didFirst) {
10824                        Selection.setSelection((Spannable) mText, max);
10825                        ((Editable) mText).replace(min, max, paste);
10826                        didFirst = true;
10827                    } else {
10828                        ((Editable) mText).insert(getSelectionEnd(), "\n");
10829                        ((Editable) mText).insert(getSelectionEnd(), paste);
10830                    }
10831                }
10832            }
10833            sLastCutCopyOrTextChangedTime = 0;
10834        }
10835    }
10836
10837    private void shareSelectedText() {
10838        String selectedText = getSelectedText();
10839        if (selectedText != null && !selectedText.isEmpty()) {
10840            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
10841            sharingIntent.setType("text/plain");
10842            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
10843            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
10844            getContext().startActivity(Intent.createChooser(sharingIntent, null));
10845            Selection.setSelection((Spannable) mText, getSelectionEnd());
10846        }
10847    }
10848
10849    private void setPrimaryClip(ClipData clip) {
10850        ClipboardManager clipboard =
10851                (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
10852        clipboard.setPrimaryClip(clip);
10853        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
10854    }
10855
10856    /**
10857     * Get the character offset closest to the specified absolute position. A typical use case is to
10858     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
10859     *
10860     * @param x The horizontal absolute position of a point on screen
10861     * @param y The vertical absolute position of a point on screen
10862     * @return the character offset for the character whose position is closest to the specified
10863     *  position. Returns -1 if there is no layout.
10864     */
10865    public int getOffsetForPosition(float x, float y) {
10866        if (getLayout() == null) return -1;
10867        final int line = getLineAtCoordinate(y);
10868        final int offset = getOffsetAtCoordinate(line, x);
10869        return offset;
10870    }
10871
10872    float convertToLocalHorizontalCoordinate(float x) {
10873        x -= getTotalPaddingLeft();
10874        // Clamp the position to inside of the view.
10875        x = Math.max(0.0f, x);
10876        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
10877        x += getScrollX();
10878        return x;
10879    }
10880
10881    int getLineAtCoordinate(float y) {
10882        y -= getTotalPaddingTop();
10883        // Clamp the position to inside of the view.
10884        y = Math.max(0.0f, y);
10885        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
10886        y += getScrollY();
10887        return getLayout().getLineForVertical((int) y);
10888    }
10889
10890    int getLineAtCoordinateUnclamped(float y) {
10891        y -= getTotalPaddingTop();
10892        y += getScrollY();
10893        return getLayout().getLineForVertical((int) y);
10894    }
10895
10896    int getOffsetAtCoordinate(int line, float x) {
10897        x = convertToLocalHorizontalCoordinate(x);
10898        return getLayout().getOffsetForHorizontal(line, x);
10899    }
10900
10901    @Override
10902    public boolean onDragEvent(DragEvent event) {
10903        switch (event.getAction()) {
10904            case DragEvent.ACTION_DRAG_STARTED:
10905                return mEditor != null && mEditor.hasInsertionController();
10906
10907            case DragEvent.ACTION_DRAG_ENTERED:
10908                TextView.this.requestFocus();
10909                return true;
10910
10911            case DragEvent.ACTION_DRAG_LOCATION:
10912                final int offset = getOffsetForPosition(event.getX(), event.getY());
10913                Selection.setSelection((Spannable) mText, offset);
10914                return true;
10915
10916            case DragEvent.ACTION_DROP:
10917                if (mEditor != null) mEditor.onDrop(event);
10918                return true;
10919
10920            case DragEvent.ACTION_DRAG_ENDED:
10921            case DragEvent.ACTION_DRAG_EXITED:
10922            default:
10923                return true;
10924        }
10925    }
10926
10927    boolean isInBatchEditMode() {
10928        if (mEditor == null) return false;
10929        final Editor.InputMethodState ims = mEditor.mInputMethodState;
10930        if (ims != null) {
10931            return ims.mBatchEditNesting > 0;
10932        }
10933        return mEditor.mInBatchEditControllers;
10934    }
10935
10936    @Override
10937    public void onRtlPropertiesChanged(int layoutDirection) {
10938        super.onRtlPropertiesChanged(layoutDirection);
10939
10940        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
10941        if (mTextDir != newTextDir) {
10942            mTextDir = newTextDir;
10943            if (mLayout != null) {
10944                checkForRelayout();
10945            }
10946        }
10947    }
10948
10949    /**
10950     * @hide
10951     */
10952    protected TextDirectionHeuristic getTextDirectionHeuristic() {
10953        if (hasPasswordTransformationMethod()) {
10954            // passwords fields should be LTR
10955            return TextDirectionHeuristics.LTR;
10956        }
10957
10958        // Always need to resolve layout direction first
10959        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
10960
10961        // Now, we can select the heuristic
10962        switch (getTextDirection()) {
10963            default:
10964            case TEXT_DIRECTION_FIRST_STRONG:
10965                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
10966                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
10967            case TEXT_DIRECTION_ANY_RTL:
10968                return TextDirectionHeuristics.ANYRTL_LTR;
10969            case TEXT_DIRECTION_LTR:
10970                return TextDirectionHeuristics.LTR;
10971            case TEXT_DIRECTION_RTL:
10972                return TextDirectionHeuristics.RTL;
10973            case TEXT_DIRECTION_LOCALE:
10974                return TextDirectionHeuristics.LOCALE;
10975            case TEXT_DIRECTION_FIRST_STRONG_LTR:
10976                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
10977            case TEXT_DIRECTION_FIRST_STRONG_RTL:
10978                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
10979        }
10980    }
10981
10982    /**
10983     * @hide
10984     */
10985    @Override
10986    public void onResolveDrawables(int layoutDirection) {
10987        // No need to resolve twice
10988        if (mLastLayoutDirection == layoutDirection) {
10989            return;
10990        }
10991        mLastLayoutDirection = layoutDirection;
10992
10993        // Resolve drawables
10994        if (mDrawables != null) {
10995            if (mDrawables.resolveWithLayoutDirection(layoutDirection)) {
10996                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.LEFT]);
10997                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.RIGHT]);
10998                applyCompoundDrawableTint();
10999            }
11000        }
11001    }
11002
11003    /**
11004     * Prepares a drawable for display by propagating layout direction and
11005     * drawable state.
11006     *
11007     * @param dr the drawable to prepare
11008     */
11009    private void prepareDrawableForDisplay(@Nullable Drawable dr) {
11010        if (dr == null) {
11011            return;
11012        }
11013
11014        dr.setLayoutDirection(getLayoutDirection());
11015
11016        if (dr.isStateful()) {
11017            dr.setState(getDrawableState());
11018            dr.jumpToCurrentState();
11019        }
11020    }
11021
11022    /**
11023     * @hide
11024     */
11025    protected void resetResolvedDrawables() {
11026        super.resetResolvedDrawables();
11027        mLastLayoutDirection = -1;
11028    }
11029
11030    /**
11031     * @hide
11032     */
11033    protected void viewClicked(InputMethodManager imm) {
11034        if (imm != null) {
11035            imm.viewClicked(this);
11036        }
11037    }
11038
11039    /**
11040     * Deletes the range of text [start, end[.
11041     * @hide
11042     */
11043    protected void deleteText_internal(int start, int end) {
11044        ((Editable) mText).delete(start, end);
11045    }
11046
11047    /**
11048     * Replaces the range of text [start, end[ by replacement text
11049     * @hide
11050     */
11051    protected void replaceText_internal(int start, int end, CharSequence text) {
11052        ((Editable) mText).replace(start, end, text);
11053    }
11054
11055    /**
11056     * Sets a span on the specified range of text
11057     * @hide
11058     */
11059    protected void setSpan_internal(Object span, int start, int end, int flags) {
11060        ((Editable) mText).setSpan(span, start, end, flags);
11061    }
11062
11063    /**
11064     * Moves the cursor to the specified offset position in text
11065     * @hide
11066     */
11067    protected void setCursorPosition_internal(int start, int end) {
11068        Selection.setSelection(((Editable) mText), start, end);
11069    }
11070
11071    /**
11072     * An Editor should be created as soon as any of the editable-specific fields (grouped
11073     * inside the Editor object) is assigned to a non-default value.
11074     * This method will create the Editor if needed.
11075     *
11076     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
11077     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
11078     * Editor for backward compatibility, as soon as one of these fields is assigned.
11079     *
11080     * Also note that for performance reasons, the mEditor is created when needed, but not
11081     * reset when no more edit-specific fields are needed.
11082     */
11083    private void createEditorIfNeeded() {
11084        if (mEditor == null) {
11085            mEditor = new Editor(this);
11086        }
11087    }
11088
11089    /**
11090     * @hide
11091     */
11092    @Override
11093    public CharSequence getIterableTextForAccessibility() {
11094        return mText;
11095    }
11096
11097    private void ensureIterableTextForAccessibilitySelectable() {
11098        if (!(mText instanceof Spannable)) {
11099            setText(mText, BufferType.SPANNABLE);
11100        }
11101    }
11102
11103    /**
11104     * @hide
11105     */
11106    @Override
11107    public TextSegmentIterator getIteratorForGranularity(int granularity) {
11108        switch (granularity) {
11109            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
11110                Spannable text = (Spannable) getIterableTextForAccessibility();
11111                if (!TextUtils.isEmpty(text) && getLayout() != null) {
11112                    AccessibilityIterators.LineTextSegmentIterator iterator =
11113                            AccessibilityIterators.LineTextSegmentIterator.getInstance();
11114                    iterator.initialize(text, getLayout());
11115                    return iterator;
11116                }
11117            } break;
11118            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
11119                Spannable text = (Spannable) getIterableTextForAccessibility();
11120                if (!TextUtils.isEmpty(text) && getLayout() != null) {
11121                    AccessibilityIterators.PageTextSegmentIterator iterator =
11122                            AccessibilityIterators.PageTextSegmentIterator.getInstance();
11123                    iterator.initialize(this);
11124                    return iterator;
11125                }
11126            } break;
11127        }
11128        return super.getIteratorForGranularity(granularity);
11129    }
11130
11131    /**
11132     * @hide
11133     */
11134    @Override
11135    public int getAccessibilitySelectionStart() {
11136        return getSelectionStart();
11137    }
11138
11139    /**
11140     * @hide
11141     */
11142    public boolean isAccessibilitySelectionExtendable() {
11143        return true;
11144    }
11145
11146    /**
11147     * @hide
11148     */
11149    @Override
11150    public int getAccessibilitySelectionEnd() {
11151        return getSelectionEnd();
11152    }
11153
11154    /**
11155     * @hide
11156     */
11157    @Override
11158    public void setAccessibilitySelection(int start, int end) {
11159        if (getAccessibilitySelectionStart() == start
11160                && getAccessibilitySelectionEnd() == end) {
11161            return;
11162        }
11163        CharSequence text = getIterableTextForAccessibility();
11164        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
11165            Selection.setSelection((Spannable) text, start, end);
11166        } else {
11167            Selection.removeSelection((Spannable) text);
11168        }
11169        // Hide all selection controllers used for adjusting selection
11170        // since we are doing so explicitlty by other means and these
11171        // controllers interact with how selection behaves.
11172        if (mEditor != null) {
11173            mEditor.hideCursorAndSpanControllers();
11174            mEditor.stopTextActionMode();
11175        }
11176    }
11177
11178    /** @hide */
11179    @Override
11180    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
11181        super.encodeProperties(stream);
11182
11183        TruncateAt ellipsize = getEllipsize();
11184        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
11185        stream.addProperty("text:textSize", getTextSize());
11186        stream.addProperty("text:scaledTextSize", getScaledTextSize());
11187        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
11188        stream.addProperty("text:selectionStart", getSelectionStart());
11189        stream.addProperty("text:selectionEnd", getSelectionEnd());
11190        stream.addProperty("text:curTextColor", mCurTextColor);
11191        stream.addProperty("text:text", mText == null ? null : mText.toString());
11192        stream.addProperty("text:gravity", mGravity);
11193    }
11194
11195    /**
11196     * User interface state that is stored by TextView for implementing
11197     * {@link View#onSaveInstanceState}.
11198     */
11199    public static class SavedState extends BaseSavedState {
11200        int selStart = -1;
11201        int selEnd = -1;
11202        CharSequence text;
11203        boolean frozenWithFocus;
11204        CharSequence error;
11205        ParcelableParcel editorState;  // Optional state from Editor.
11206
11207        SavedState(Parcelable superState) {
11208            super(superState);
11209        }
11210
11211        @Override
11212        public void writeToParcel(Parcel out, int flags) {
11213            super.writeToParcel(out, flags);
11214            out.writeInt(selStart);
11215            out.writeInt(selEnd);
11216            out.writeInt(frozenWithFocus ? 1 : 0);
11217            TextUtils.writeToParcel(text, out, flags);
11218
11219            if (error == null) {
11220                out.writeInt(0);
11221            } else {
11222                out.writeInt(1);
11223                TextUtils.writeToParcel(error, out, flags);
11224            }
11225
11226            if (editorState == null) {
11227                out.writeInt(0);
11228            } else {
11229                out.writeInt(1);
11230                editorState.writeToParcel(out, flags);
11231            }
11232        }
11233
11234        @Override
11235        public String toString() {
11236            String str = "TextView.SavedState{"
11237                    + Integer.toHexString(System.identityHashCode(this))
11238                    + " start=" + selStart + " end=" + selEnd;
11239            if (text != null) {
11240                str += " text=" + text;
11241            }
11242            return str + "}";
11243        }
11244
11245        @SuppressWarnings("hiding")
11246        public static final Parcelable.Creator<SavedState> CREATOR =
11247                new Parcelable.Creator<SavedState>() {
11248                    public SavedState createFromParcel(Parcel in) {
11249                        return new SavedState(in);
11250                    }
11251
11252                    public SavedState[] newArray(int size) {
11253                        return new SavedState[size];
11254                    }
11255                };
11256
11257        private SavedState(Parcel in) {
11258            super(in);
11259            selStart = in.readInt();
11260            selEnd = in.readInt();
11261            frozenWithFocus = (in.readInt() != 0);
11262            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
11263
11264            if (in.readInt() != 0) {
11265                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
11266            }
11267
11268            if (in.readInt() != 0) {
11269                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
11270            }
11271        }
11272    }
11273
11274    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
11275        private char[] mChars;
11276        private int mStart, mLength;
11277
11278        public CharWrapper(char[] chars, int start, int len) {
11279            mChars = chars;
11280            mStart = start;
11281            mLength = len;
11282        }
11283
11284        /* package */ void set(char[] chars, int start, int len) {
11285            mChars = chars;
11286            mStart = start;
11287            mLength = len;
11288        }
11289
11290        public int length() {
11291            return mLength;
11292        }
11293
11294        public char charAt(int off) {
11295            return mChars[off + mStart];
11296        }
11297
11298        @Override
11299        public String toString() {
11300            return new String(mChars, mStart, mLength);
11301        }
11302
11303        public CharSequence subSequence(int start, int end) {
11304            if (start < 0 || end < 0 || start > mLength || end > mLength) {
11305                throw new IndexOutOfBoundsException(start + ", " + end);
11306            }
11307
11308            return new String(mChars, start + mStart, end - start);
11309        }
11310
11311        public void getChars(int start, int end, char[] buf, int off) {
11312            if (start < 0 || end < 0 || start > mLength || end > mLength) {
11313                throw new IndexOutOfBoundsException(start + ", " + end);
11314            }
11315
11316            System.arraycopy(mChars, start + mStart, buf, off, end - start);
11317        }
11318
11319        @Override
11320        public void drawText(BaseCanvas c, int start, int end,
11321                             float x, float y, Paint p) {
11322            c.drawText(mChars, start + mStart, end - start, x, y, p);
11323        }
11324
11325        @Override
11326        public void drawTextRun(BaseCanvas c, int start, int end,
11327                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
11328            int count = end - start;
11329            int contextCount = contextEnd - contextStart;
11330            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
11331                    contextCount, x, y, isRtl, p);
11332        }
11333
11334        public float measureText(int start, int end, Paint p) {
11335            return p.measureText(mChars, start + mStart, end - start);
11336        }
11337
11338        public int getTextWidths(int start, int end, float[] widths, Paint p) {
11339            return p.getTextWidths(mChars, start + mStart, end - start, widths);
11340        }
11341
11342        public float getTextRunAdvances(int start, int end, int contextStart,
11343                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
11344                Paint p) {
11345            int count = end - start;
11346            int contextCount = contextEnd - contextStart;
11347            return p.getTextRunAdvances(mChars, start + mStart, count,
11348                    contextStart + mStart, contextCount, isRtl, advances,
11349                    advancesIndex);
11350        }
11351
11352        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
11353                int offset, int cursorOpt, Paint p) {
11354            int contextCount = contextEnd - contextStart;
11355            return p.getTextRunCursor(mChars, contextStart + mStart,
11356                    contextCount, dir, offset + mStart, cursorOpt);
11357        }
11358    }
11359
11360    private static final class Marquee {
11361        // TODO: Add an option to configure this
11362        private static final float MARQUEE_DELTA_MAX = 0.07f;
11363        private static final int MARQUEE_DELAY = 1200;
11364        private static final int MARQUEE_DP_PER_SECOND = 30;
11365
11366        private static final byte MARQUEE_STOPPED = 0x0;
11367        private static final byte MARQUEE_STARTING = 0x1;
11368        private static final byte MARQUEE_RUNNING = 0x2;
11369
11370        private final WeakReference<TextView> mView;
11371        private final Choreographer mChoreographer;
11372
11373        private byte mStatus = MARQUEE_STOPPED;
11374        private final float mPixelsPerSecond;
11375        private float mMaxScroll;
11376        private float mMaxFadeScroll;
11377        private float mGhostStart;
11378        private float mGhostOffset;
11379        private float mFadeStop;
11380        private int mRepeatLimit;
11381
11382        private float mScroll;
11383        private long mLastAnimationMs;
11384
11385        Marquee(TextView v) {
11386            final float density = v.getContext().getResources().getDisplayMetrics().density;
11387            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
11388            mView = new WeakReference<TextView>(v);
11389            mChoreographer = Choreographer.getInstance();
11390        }
11391
11392        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
11393            @Override
11394            public void doFrame(long frameTimeNanos) {
11395                tick();
11396            }
11397        };
11398
11399        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
11400            @Override
11401            public void doFrame(long frameTimeNanos) {
11402                mStatus = MARQUEE_RUNNING;
11403                mLastAnimationMs = mChoreographer.getFrameTime();
11404                tick();
11405            }
11406        };
11407
11408        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
11409            @Override
11410            public void doFrame(long frameTimeNanos) {
11411                if (mStatus == MARQUEE_RUNNING) {
11412                    if (mRepeatLimit >= 0) {
11413                        mRepeatLimit--;
11414                    }
11415                    start(mRepeatLimit);
11416                }
11417            }
11418        };
11419
11420        void tick() {
11421            if (mStatus != MARQUEE_RUNNING) {
11422                return;
11423            }
11424
11425            mChoreographer.removeFrameCallback(mTickCallback);
11426
11427            final TextView textView = mView.get();
11428            if (textView != null && (textView.isFocused() || textView.isSelected())) {
11429                long currentMs = mChoreographer.getFrameTime();
11430                long deltaMs = currentMs - mLastAnimationMs;
11431                mLastAnimationMs = currentMs;
11432                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
11433                mScroll += deltaPx;
11434                if (mScroll > mMaxScroll) {
11435                    mScroll = mMaxScroll;
11436                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
11437                } else {
11438                    mChoreographer.postFrameCallback(mTickCallback);
11439                }
11440                textView.invalidate();
11441            }
11442        }
11443
11444        void stop() {
11445            mStatus = MARQUEE_STOPPED;
11446            mChoreographer.removeFrameCallback(mStartCallback);
11447            mChoreographer.removeFrameCallback(mRestartCallback);
11448            mChoreographer.removeFrameCallback(mTickCallback);
11449            resetScroll();
11450        }
11451
11452        private void resetScroll() {
11453            mScroll = 0.0f;
11454            final TextView textView = mView.get();
11455            if (textView != null) textView.invalidate();
11456        }
11457
11458        void start(int repeatLimit) {
11459            if (repeatLimit == 0) {
11460                stop();
11461                return;
11462            }
11463            mRepeatLimit = repeatLimit;
11464            final TextView textView = mView.get();
11465            if (textView != null && textView.mLayout != null) {
11466                mStatus = MARQUEE_STARTING;
11467                mScroll = 0.0f;
11468                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft()
11469                        - textView.getCompoundPaddingRight();
11470                final float lineWidth = textView.mLayout.getLineWidth(0);
11471                final float gap = textWidth / 3.0f;
11472                mGhostStart = lineWidth - textWidth + gap;
11473                mMaxScroll = mGhostStart + textWidth;
11474                mGhostOffset = lineWidth + gap;
11475                mFadeStop = lineWidth + textWidth / 6.0f;
11476                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
11477
11478                textView.invalidate();
11479                mChoreographer.postFrameCallback(mStartCallback);
11480            }
11481        }
11482
11483        float getGhostOffset() {
11484            return mGhostOffset;
11485        }
11486
11487        float getScroll() {
11488            return mScroll;
11489        }
11490
11491        float getMaxFadeScroll() {
11492            return mMaxFadeScroll;
11493        }
11494
11495        boolean shouldDrawLeftFade() {
11496            return mScroll <= mFadeStop;
11497        }
11498
11499        boolean shouldDrawGhost() {
11500            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
11501        }
11502
11503        boolean isRunning() {
11504            return mStatus == MARQUEE_RUNNING;
11505        }
11506
11507        boolean isStopped() {
11508            return mStatus == MARQUEE_STOPPED;
11509        }
11510    }
11511
11512    private class ChangeWatcher implements TextWatcher, SpanWatcher {
11513
11514        private CharSequence mBeforeText;
11515
11516        public void beforeTextChanged(CharSequence buffer, int start,
11517                                      int before, int after) {
11518            if (DEBUG_EXTRACT) {
11519                Log.v(LOG_TAG, "beforeTextChanged start=" + start
11520                        + " before=" + before + " after=" + after + ": " + buffer);
11521            }
11522
11523            if (AccessibilityManager.getInstance(mContext).isEnabled()) {
11524                mBeforeText = buffer.toString();
11525            }
11526
11527            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
11528        }
11529
11530        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
11531            if (DEBUG_EXTRACT) {
11532                Log.v(LOG_TAG, "onTextChanged start=" + start
11533                        + " before=" + before + " after=" + after + ": " + buffer);
11534            }
11535            TextView.this.handleTextChanged(buffer, start, before, after);
11536
11537            if (AccessibilityManager.getInstance(mContext).isEnabled()
11538                    && (isFocused() || isSelected() && isShown())) {
11539                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
11540                mBeforeText = null;
11541            }
11542        }
11543
11544        public void afterTextChanged(Editable buffer) {
11545            if (DEBUG_EXTRACT) {
11546                Log.v(LOG_TAG, "afterTextChanged: " + buffer);
11547            }
11548            TextView.this.sendAfterTextChanged(buffer);
11549
11550            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
11551                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
11552            }
11553        }
11554
11555        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
11556            if (DEBUG_EXTRACT) {
11557                Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
11558                        + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
11559            }
11560            TextView.this.spanChange(buf, what, s, st, e, en);
11561        }
11562
11563        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
11564            if (DEBUG_EXTRACT) {
11565                Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e + " what=" + what + ": " + buf);
11566            }
11567            TextView.this.spanChange(buf, what, -1, s, -1, e);
11568        }
11569
11570        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
11571            if (DEBUG_EXTRACT) {
11572                Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e + " what=" + what + ": " + buf);
11573            }
11574            TextView.this.spanChange(buf, what, s, -1, e, -1);
11575        }
11576    }
11577}
11578