TextView.java revision 1db5397d88e722b1ab82ccb2b429ceec1179ccd8 
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 android.R;
20import android.annotation.ColorInt;
21import android.annotation.DrawableRes;
22import android.annotation.NonNull;
23import android.annotation.Nullable;
24import android.annotation.Size;
25import android.annotation.StringRes;
26import android.annotation.StyleRes;
27import android.annotation.XmlRes;
28import android.app.Activity;
29import android.app.assist.AssistStructure;
30import android.content.ClipData;
31import android.content.ClipboardManager;
32import android.content.Context;
33import android.content.Intent;
34import android.content.UndoManager;
35import android.content.res.ColorStateList;
36import android.content.res.CompatibilityInfo;
37import android.content.res.Configuration;
38import android.content.res.Resources;
39import android.content.res.TypedArray;
40import android.content.res.XmlResourceParser;
41import android.graphics.Canvas;
42import android.graphics.Insets;
43import android.graphics.Paint;
44import android.graphics.Path;
45import android.graphics.PorterDuff;
46import android.graphics.Rect;
47import android.graphics.RectF;
48import android.graphics.Typeface;
49import android.graphics.drawable.Drawable;
50import android.os.AsyncTask;
51import android.os.Bundle;
52import android.os.Parcel;
53import android.os.Parcelable;
54import android.os.ParcelableParcel;
55import android.os.SystemClock;
56import android.os.UserHandle;
57import android.provider.Settings;
58import android.text.BoringLayout;
59import android.text.DynamicLayout;
60import android.text.Editable;
61import android.text.GetChars;
62import android.text.GraphicsOperations;
63import android.text.InputFilter;
64import android.text.InputType;
65import android.text.Layout;
66import android.text.ParcelableSpan;
67import android.text.Selection;
68import android.text.SpanWatcher;
69import android.text.Spannable;
70import android.text.SpannableString;
71import android.text.SpannableStringBuilder;
72import android.text.Spanned;
73import android.text.SpannedString;
74import android.text.StaticLayout;
75import android.text.TextDirectionHeuristic;
76import android.text.TextDirectionHeuristics;
77import android.text.TextPaint;
78import android.text.TextUtils;
79import android.text.TextUtils.TruncateAt;
80import android.text.TextWatcher;
81import android.text.method.AllCapsTransformationMethod;
82import android.text.method.ArrowKeyMovementMethod;
83import android.text.method.DateKeyListener;
84import android.text.method.DateTimeKeyListener;
85import android.text.method.DialerKeyListener;
86import android.text.method.DigitsKeyListener;
87import android.text.method.KeyListener;
88import android.text.method.LinkMovementMethod;
89import android.text.method.MetaKeyKeyListener;
90import android.text.method.MovementMethod;
91import android.text.method.PasswordTransformationMethod;
92import android.text.method.SingleLineTransformationMethod;
93import android.text.method.TextKeyListener;
94import android.text.method.TimeKeyListener;
95import android.text.method.TransformationMethod;
96import android.text.method.TransformationMethod2;
97import android.text.method.WordIterator;
98import android.text.style.CharacterStyle;
99import android.text.style.ClickableSpan;
100import android.text.style.ParagraphStyle;
101import android.text.style.SpellCheckSpan;
102import android.text.style.SuggestionSpan;
103import android.text.style.URLSpan;
104import android.text.style.UpdateAppearance;
105import android.text.util.Linkify;
106import android.util.AttributeSet;
107import android.util.LocaleList;
108import android.util.Log;
109import android.util.TypedValue;
110import android.view.AccessibilityIterators.TextSegmentIterator;
111import android.view.ActionMode;
112import android.view.Choreographer;
113import android.view.DragEvent;
114import android.view.Gravity;
115import android.view.HapticFeedbackConstants;
116import android.view.KeyCharacterMap;
117import android.view.KeyEvent;
118import android.view.MotionEvent;
119import android.view.PointerIcon;
120import android.view.View;
121import android.view.ViewParent;
122import android.view.ViewStructure;
123import android.view.ViewConfiguration;
124import android.view.ViewDebug;
125import android.view.ViewGroup.LayoutParams;
126import android.view.ViewRootImpl;
127import android.view.ViewTreeObserver;
128import android.view.ViewHierarchyEncoder;
129import android.view.accessibility.AccessibilityEvent;
130import android.view.accessibility.AccessibilityManager;
131import android.view.accessibility.AccessibilityNodeInfo;
132import android.view.animation.AnimationUtils;
133import android.view.inputmethod.BaseInputConnection;
134import android.view.inputmethod.CompletionInfo;
135import android.view.inputmethod.CorrectionInfo;
136import android.view.inputmethod.EditorInfo;
137import android.view.inputmethod.ExtractedText;
138import android.view.inputmethod.ExtractedTextRequest;
139import android.view.inputmethod.InputConnection;
140import android.view.inputmethod.InputMethodManager;
141import android.view.textservice.SpellCheckerSubtype;
142import android.view.textservice.TextServicesManager;
143import android.widget.RemoteViews.RemoteView;
144
145import com.android.internal.annotations.VisibleForTesting;
146import com.android.internal.util.FastMath;
147import com.android.internal.widget.EditableInputConnection;
148
149import org.xmlpull.v1.XmlPullParserException;
150
151import java.io.IOException;
152import java.lang.ref.WeakReference;
153import java.util.ArrayList;
154import java.util.Locale;
155
156import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
157
158/**
159 * Displays text to the user and optionally allows them to edit it.  A TextView
160 * is a complete text editor, however the basic class is configured to not
161 * allow editing; see {@link EditText} for a subclass that configures the text
162 * view for editing.
163 *
164 * <p>
165 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
166 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
167 * android:textIsSelectable} to "true" or call
168 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
169 * allows users to make selection gestures in the TextView, which in turn triggers the system's
170 * built-in copy/paste controls.
171 * <p>
172 * <b>XML attributes</b>
173 * <p>
174 * See {@link android.R.styleable#TextView TextView Attributes},
175 * {@link android.R.styleable#View View Attributes}
176 *
177 * @attr ref android.R.styleable#TextView_text
178 * @attr ref android.R.styleable#TextView_bufferType
179 * @attr ref android.R.styleable#TextView_hint
180 * @attr ref android.R.styleable#TextView_textColor
181 * @attr ref android.R.styleable#TextView_textColorHighlight
182 * @attr ref android.R.styleable#TextView_textColorHint
183 * @attr ref android.R.styleable#TextView_textAppearance
184 * @attr ref android.R.styleable#TextView_textColorLink
185 * @attr ref android.R.styleable#TextView_textSize
186 * @attr ref android.R.styleable#TextView_textScaleX
187 * @attr ref android.R.styleable#TextView_fontFamily
188 * @attr ref android.R.styleable#TextView_typeface
189 * @attr ref android.R.styleable#TextView_textStyle
190 * @attr ref android.R.styleable#TextView_cursorVisible
191 * @attr ref android.R.styleable#TextView_maxLines
192 * @attr ref android.R.styleable#TextView_maxHeight
193 * @attr ref android.R.styleable#TextView_lines
194 * @attr ref android.R.styleable#TextView_height
195 * @attr ref android.R.styleable#TextView_minLines
196 * @attr ref android.R.styleable#TextView_minHeight
197 * @attr ref android.R.styleable#TextView_maxEms
198 * @attr ref android.R.styleable#TextView_maxWidth
199 * @attr ref android.R.styleable#TextView_ems
200 * @attr ref android.R.styleable#TextView_width
201 * @attr ref android.R.styleable#TextView_minEms
202 * @attr ref android.R.styleable#TextView_minWidth
203 * @attr ref android.R.styleable#TextView_gravity
204 * @attr ref android.R.styleable#TextView_scrollHorizontally
205 * @attr ref android.R.styleable#TextView_password
206 * @attr ref android.R.styleable#TextView_singleLine
207 * @attr ref android.R.styleable#TextView_selectAllOnFocus
208 * @attr ref android.R.styleable#TextView_includeFontPadding
209 * @attr ref android.R.styleable#TextView_maxLength
210 * @attr ref android.R.styleable#TextView_shadowColor
211 * @attr ref android.R.styleable#TextView_shadowDx
212 * @attr ref android.R.styleable#TextView_shadowDy
213 * @attr ref android.R.styleable#TextView_shadowRadius
214 * @attr ref android.R.styleable#TextView_autoLink
215 * @attr ref android.R.styleable#TextView_linksClickable
216 * @attr ref android.R.styleable#TextView_numeric
217 * @attr ref android.R.styleable#TextView_digits
218 * @attr ref android.R.styleable#TextView_phoneNumber
219 * @attr ref android.R.styleable#TextView_inputMethod
220 * @attr ref android.R.styleable#TextView_capitalize
221 * @attr ref android.R.styleable#TextView_autoText
222 * @attr ref android.R.styleable#TextView_editable
223 * @attr ref android.R.styleable#TextView_freezesText
224 * @attr ref android.R.styleable#TextView_ellipsize
225 * @attr ref android.R.styleable#TextView_drawableTop
226 * @attr ref android.R.styleable#TextView_drawableBottom
227 * @attr ref android.R.styleable#TextView_drawableRight
228 * @attr ref android.R.styleable#TextView_drawableLeft
229 * @attr ref android.R.styleable#TextView_drawableStart
230 * @attr ref android.R.styleable#TextView_drawableEnd
231 * @attr ref android.R.styleable#TextView_drawablePadding
232 * @attr ref android.R.styleable#TextView_drawableTint
233 * @attr ref android.R.styleable#TextView_drawableTintMode
234 * @attr ref android.R.styleable#TextView_lineSpacingExtra
235 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
236 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
237 * @attr ref android.R.styleable#TextView_inputType
238 * @attr ref android.R.styleable#TextView_imeOptions
239 * @attr ref android.R.styleable#TextView_privateImeOptions
240 * @attr ref android.R.styleable#TextView_imeActionLabel
241 * @attr ref android.R.styleable#TextView_imeActionId
242 * @attr ref android.R.styleable#TextView_editorExtras
243 * @attr ref android.R.styleable#TextView_elegantTextHeight
244 * @attr ref android.R.styleable#TextView_letterSpacing
245 * @attr ref android.R.styleable#TextView_fontFeatureSettings
246 * @attr ref android.R.styleable#TextView_breakStrategy
247 * @attr ref android.R.styleable#TextView_hyphenationFrequency
248 */
249@RemoteView
250public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
251    static final String LOG_TAG = "TextView";
252    static final boolean DEBUG_EXTRACT = false;
253
254    // Enum for the "typeface" XML parameter.
255    // TODO: How can we get this from the XML instead of hardcoding it here?
256    private static final int SANS = 1;
257    private static final int SERIF = 2;
258    private static final int MONOSPACE = 3;
259
260    // Bitfield for the "numeric" XML parameter.
261    // TODO: How can we get this from the XML instead of hardcoding it here?
262    private static final int SIGNED = 2;
263    private static final int DECIMAL = 4;
264
265    /**
266     * Draw marquee text with fading edges as usual
267     */
268    private static final int MARQUEE_FADE_NORMAL = 0;
269
270    /**
271     * Draw marquee text as ellipsize end while inactive instead of with the fade.
272     * (Useful for devices where the fade can be expensive if overdone)
273     */
274    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
275
276    /**
277     * Draw marquee text with fading edges because it is currently active/animating.
278     */
279    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
280
281    private static final int LINES = 1;
282    private static final int EMS = LINES;
283    private static final int PIXELS = 2;
284
285    private static final RectF TEMP_RECTF = new RectF();
286
287    // XXX should be much larger
288    private static final int VERY_WIDE = 1024*1024;
289    private static final int ANIMATED_SCROLL_GAP = 250;
290
291    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
292    private static final Spanned EMPTY_SPANNED = new SpannedString("");
293
294    private static final int CHANGE_WATCHER_PRIORITY = 100;
295
296    // New state used to change background based on whether this TextView is multiline.
297    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
298
299    // Accessibility action to share selected text.
300    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
301
302    /**
303     * @hide
304     */
305    // Accessibility action start id for "process text" actions.
306    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
307
308    /**
309     * @hide
310     */
311    static final int PROCESS_TEXT_REQUEST_CODE = 100;
312
313    // System wide time for last cut, copy or text changed action.
314    static long sLastCutCopyOrTextChangedTime;
315
316    private ColorStateList mTextColor;
317    private ColorStateList mHintTextColor;
318    private ColorStateList mLinkTextColor;
319    @ViewDebug.ExportedProperty(category = "text")
320    private int mCurTextColor;
321    private int mCurHintTextColor;
322    private boolean mFreezesText;
323    private boolean mDispatchTemporaryDetach;
324
325    /** Whether this view is temporarily detached from the parent view. */
326    boolean mTemporaryDetach;
327
328    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
329    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
330
331    private float mShadowRadius, mShadowDx, mShadowDy;
332    private int mShadowColor;
333
334    private boolean mPreDrawRegistered;
335    private boolean mPreDrawListenerDetached;
336
337    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
338    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
339    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
340    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
341    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
342    private boolean mPreventDefaultMovement;
343
344    private TextUtils.TruncateAt mEllipsize;
345
346    static class Drawables {
347        static final int LEFT = 0;
348        static final int TOP = 1;
349        static final int RIGHT = 2;
350        static final int BOTTOM = 3;
351
352        static final int DRAWABLE_NONE = -1;
353        static final int DRAWABLE_RIGHT = 0;
354        static final int DRAWABLE_LEFT = 1;
355
356        final Rect mCompoundRect = new Rect();
357
358        final Drawable[] mShowing = new Drawable[4];
359
360        ColorStateList mTintList;
361        PorterDuff.Mode mTintMode;
362        boolean mHasTint;
363        boolean mHasTintMode;
364
365        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
366        Drawable mDrawableLeftInitial, mDrawableRightInitial;
367
368        boolean mIsRtlCompatibilityMode;
369        boolean mOverride;
370
371        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
372                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
373
374        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
375                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
376
377        int mDrawablePadding;
378
379        int mDrawableSaved = DRAWABLE_NONE;
380
381        public Drawables(Context context) {
382            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
383            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
384                !context.getApplicationInfo().hasRtlSupport());
385            mOverride = false;
386        }
387
388        public void resolveWithLayoutDirection(int layoutDirection) {
389            // First reset "left" and "right" drawables to their initial values
390            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
391            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
392
393            if (mIsRtlCompatibilityMode) {
394                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
395                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
396                    mShowing[Drawables.LEFT] = mDrawableStart;
397                    mDrawableSizeLeft = mDrawableSizeStart;
398                    mDrawableHeightLeft = mDrawableHeightStart;
399                }
400                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
401                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
402                    mShowing[Drawables.RIGHT] = mDrawableEnd;
403                    mDrawableSizeRight = mDrawableSizeEnd;
404                    mDrawableHeightRight = mDrawableHeightEnd;
405                }
406            } else {
407                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
408                // drawable if and only if they have been defined
409                switch(layoutDirection) {
410                    case LAYOUT_DIRECTION_RTL:
411                        if (mOverride) {
412                            mShowing[Drawables.RIGHT] = mDrawableStart;
413                            mDrawableSizeRight = mDrawableSizeStart;
414                            mDrawableHeightRight = mDrawableHeightStart;
415
416                            mShowing[Drawables.LEFT] = mDrawableEnd;
417                            mDrawableSizeLeft = mDrawableSizeEnd;
418                            mDrawableHeightLeft = mDrawableHeightEnd;
419                        }
420                        break;
421
422                    case LAYOUT_DIRECTION_LTR:
423                    default:
424                        if (mOverride) {
425                            mShowing[Drawables.LEFT] = mDrawableStart;
426                            mDrawableSizeLeft = mDrawableSizeStart;
427                            mDrawableHeightLeft = mDrawableHeightStart;
428
429                            mShowing[Drawables.RIGHT] = mDrawableEnd;
430                            mDrawableSizeRight = mDrawableSizeEnd;
431                            mDrawableHeightRight = mDrawableHeightEnd;
432                        }
433                        break;
434                }
435            }
436            applyErrorDrawableIfNeeded(layoutDirection);
437            updateDrawablesLayoutDirection(layoutDirection);
438        }
439
440        private void updateDrawablesLayoutDirection(int layoutDirection) {
441            for (Drawable dr : mShowing) {
442                if (dr != null) {
443                    dr.setLayoutDirection(layoutDirection);
444                }
445            }
446        }
447
448        public void setErrorDrawable(Drawable dr, TextView tv) {
449            if (mDrawableError != dr && mDrawableError != null) {
450                mDrawableError.setCallback(null);
451            }
452            mDrawableError = dr;
453
454            if (mDrawableError != null) {
455                final Rect compoundRect = mCompoundRect;
456                final int[] state = tv.getDrawableState();
457
458                mDrawableError.setState(state);
459                mDrawableError.copyBounds(compoundRect);
460                mDrawableError.setCallback(tv);
461                mDrawableSizeError = compoundRect.width();
462                mDrawableHeightError = compoundRect.height();
463            } else {
464                mDrawableSizeError = mDrawableHeightError = 0;
465            }
466        }
467
468        private void applyErrorDrawableIfNeeded(int layoutDirection) {
469            // first restore the initial state if needed
470            switch (mDrawableSaved) {
471                case DRAWABLE_LEFT:
472                    mShowing[Drawables.LEFT] = mDrawableTemp;
473                    mDrawableSizeLeft = mDrawableSizeTemp;
474                    mDrawableHeightLeft = mDrawableHeightTemp;
475                    break;
476                case DRAWABLE_RIGHT:
477                    mShowing[Drawables.RIGHT] = mDrawableTemp;
478                    mDrawableSizeRight = mDrawableSizeTemp;
479                    mDrawableHeightRight = mDrawableHeightTemp;
480                    break;
481                case DRAWABLE_NONE:
482                default:
483            }
484            // then, if needed, assign the Error drawable to the correct location
485            if (mDrawableError != null) {
486                switch(layoutDirection) {
487                    case LAYOUT_DIRECTION_RTL:
488                        mDrawableSaved = DRAWABLE_LEFT;
489
490                        mDrawableTemp = mShowing[Drawables.LEFT];
491                        mDrawableSizeTemp = mDrawableSizeLeft;
492                        mDrawableHeightTemp = mDrawableHeightLeft;
493
494                        mShowing[Drawables.LEFT] = mDrawableError;
495                        mDrawableSizeLeft = mDrawableSizeError;
496                        mDrawableHeightLeft = mDrawableHeightError;
497                        break;
498                    case LAYOUT_DIRECTION_LTR:
499                    default:
500                        mDrawableSaved = DRAWABLE_RIGHT;
501
502                        mDrawableTemp = mShowing[Drawables.RIGHT];
503                        mDrawableSizeTemp = mDrawableSizeRight;
504                        mDrawableHeightTemp = mDrawableHeightRight;
505
506                        mShowing[Drawables.RIGHT] = mDrawableError;
507                        mDrawableSizeRight = mDrawableSizeError;
508                        mDrawableHeightRight = mDrawableHeightError;
509                        break;
510                }
511            }
512        }
513    }
514
515    Drawables mDrawables;
516
517    private CharWrapper mCharWrapper;
518
519    private Marquee mMarquee;
520    private boolean mRestartMarquee;
521
522    private int mMarqueeRepeatLimit = 3;
523
524    private int mLastLayoutDirection = -1;
525
526    /**
527     * On some devices the fading edges add a performance penalty if used
528     * extensively in the same layout. This mode indicates how the marquee
529     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
530     */
531    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
532
533    /**
534     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
535     * the layout that should be used when the mode switches.
536     */
537    private Layout mSavedMarqueeModeLayout;
538
539    @ViewDebug.ExportedProperty(category = "text")
540    private CharSequence mText;
541    private CharSequence mTransformed;
542    private BufferType mBufferType = BufferType.NORMAL;
543
544    private CharSequence mHint;
545    private Layout mHintLayout;
546
547    private MovementMethod mMovement;
548
549    private TransformationMethod mTransformation;
550    private boolean mAllowTransformationLengthChange;
551    private ChangeWatcher mChangeWatcher;
552
553    private ArrayList<TextWatcher> mListeners;
554
555    // display attributes
556    private final TextPaint mTextPaint;
557    private boolean mUserSetTextScaleX;
558    private Layout mLayout;
559    private boolean mLocalesChanged = false;
560
561    @ViewDebug.ExportedProperty(category = "text")
562    private int mGravity = Gravity.TOP | Gravity.START;
563    private boolean mHorizontallyScrolling;
564
565    private int mAutoLinkMask;
566    private boolean mLinksClickable = true;
567
568    private float mSpacingMult = 1.0f;
569    private float mSpacingAdd = 0.0f;
570
571    private int mBreakStrategy;
572    private int mHyphenationFrequency;
573
574    private int mMaximum = Integer.MAX_VALUE;
575    private int mMaxMode = LINES;
576    private int mMinimum = 0;
577    private int mMinMode = LINES;
578
579    private int mOldMaximum = mMaximum;
580    private int mOldMaxMode = mMaxMode;
581
582    private int mMaxWidth = Integer.MAX_VALUE;
583    private int mMaxWidthMode = PIXELS;
584    private int mMinWidth = 0;
585    private int mMinWidthMode = PIXELS;
586
587    private boolean mSingleLine;
588    private int mDesiredHeightAtMeasure = -1;
589    private boolean mIncludePad = true;
590    private int mDeferScroll = -1;
591
592    // tmp primitives, so we don't alloc them on each draw
593    private Rect mTempRect;
594    private long mLastScroll;
595    private Scroller mScroller;
596
597    private BoringLayout.Metrics mBoring, mHintBoring;
598    private BoringLayout mSavedLayout, mSavedHintLayout;
599
600    private TextDirectionHeuristic mTextDir;
601
602    private InputFilter[] mFilters = NO_FILTERS;
603
604    private volatile Locale mCurrentSpellCheckerLocaleCache;
605
606    // It is possible to have a selection even when mEditor is null (programmatically set, like when
607    // a link is pressed). These highlight-related fields do not go in mEditor.
608    int mHighlightColor = 0x6633B5E5;
609    private Path mHighlightPath;
610    private final Paint mHighlightPaint;
611    private boolean mHighlightPathBogus = true;
612
613    private boolean mFirstTouch = false;
614    private long mLastTouchUpTime = 0;
615
616    // Although these fields are specific to editable text, they are not added to Editor because
617    // they are defined by the TextView's style and are theme-dependent.
618    int mCursorDrawableRes;
619    // These four fields, could be moved to Editor, since we know their default values and we
620    // could condition the creation of the Editor to a non standard value. This is however
621    // brittle since the hardcoded values here (such as
622    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
623    // default style is modified.
624    int mTextSelectHandleLeftRes;
625    int mTextSelectHandleRightRes;
626    int mTextSelectHandleRes;
627    int mTextEditSuggestionItemLayout;
628
629    /**
630     * EditText specific data, created on demand when one of the Editor fields is used.
631     * See {@link #createEditorIfNeeded()}.
632     */
633    private Editor mEditor;
634
635    /*
636     * Kick-start the font cache for the zygote process (to pay the cost of
637     * initializing freetype for our default font only once).
638     */
639    static {
640        Paint p = new Paint();
641        p.setAntiAlias(true);
642        // We don't care about the result, just the side-effect of measuring.
643        p.measureText("H");
644    }
645
646    /**
647     * Interface definition for a callback to be invoked when an action is
648     * performed on the editor.
649     */
650    public interface OnEditorActionListener {
651        /**
652         * Called when an action is being performed.
653         *
654         * @param v The view that was clicked.
655         * @param actionId Identifier of the action.  This will be either the
656         * identifier you supplied, or {@link EditorInfo#IME_NULL
657         * EditorInfo.IME_NULL} if being called due to the enter key
658         * being pressed.
659         * @param event If triggered by an enter key, this is the event;
660         * otherwise, this is null.
661         * @return Return true if you have consumed the action, else false.
662         */
663        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
664    }
665
666    public TextView(Context context) {
667        this(context, null);
668    }
669
670    public TextView(Context context, @Nullable AttributeSet attrs) {
671        this(context, attrs, com.android.internal.R.attr.textViewStyle);
672    }
673
674    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
675        this(context, attrs, defStyleAttr, 0);
676    }
677
678    @SuppressWarnings("deprecation")
679    public TextView(
680            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
681        super(context, attrs, defStyleAttr, defStyleRes);
682
683        mText = "";
684
685        final Resources res = getResources();
686        final CompatibilityInfo compat = res.getCompatibilityInfo();
687
688        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
689        mTextPaint.density = res.getDisplayMetrics().density;
690        mTextPaint.setCompatibilityScaling(compat.applicationScale);
691
692        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
693        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
694
695        mMovement = getDefaultMovementMethod();
696
697        mTransformation = null;
698
699        int textColorHighlight = 0;
700        ColorStateList textColor = null;
701        ColorStateList textColorHint = null;
702        ColorStateList textColorLink = null;
703        int textSize = 15;
704        String fontFamily = null;
705        boolean fontFamilyExplicit = false;
706        int typefaceIndex = -1;
707        int styleIndex = -1;
708        boolean allCaps = false;
709        int shadowcolor = 0;
710        float dx = 0, dy = 0, r = 0;
711        boolean elegant = false;
712        float letterSpacing = 0;
713        String fontFeatureSettings = null;
714        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
715        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
716
717        final Resources.Theme theme = context.getTheme();
718
719        /*
720         * Look the appearance up without checking first if it exists because
721         * almost every TextView has one and it greatly simplifies the logic
722         * to be able to parse the appearance first and then let specific tags
723         * for this View override it.
724         */
725        TypedArray a = theme.obtainStyledAttributes(attrs,
726                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
727        TypedArray appearance = null;
728        int ap = a.getResourceId(
729                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
730        a.recycle();
731        if (ap != -1) {
732            appearance = theme.obtainStyledAttributes(
733                    ap, com.android.internal.R.styleable.TextAppearance);
734        }
735        if (appearance != null) {
736            int n = appearance.getIndexCount();
737            for (int i = 0; i < n; i++) {
738                int attr = appearance.getIndex(i);
739
740                switch (attr) {
741                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
742                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
743                    break;
744
745                case com.android.internal.R.styleable.TextAppearance_textColor:
746                    textColor = appearance.getColorStateList(attr);
747                    break;
748
749                case com.android.internal.R.styleable.TextAppearance_textColorHint:
750                    textColorHint = appearance.getColorStateList(attr);
751                    break;
752
753                case com.android.internal.R.styleable.TextAppearance_textColorLink:
754                    textColorLink = appearance.getColorStateList(attr);
755                    break;
756
757                case com.android.internal.R.styleable.TextAppearance_textSize:
758                    textSize = appearance.getDimensionPixelSize(attr, textSize);
759                    break;
760
761                case com.android.internal.R.styleable.TextAppearance_typeface:
762                    typefaceIndex = appearance.getInt(attr, -1);
763                    break;
764
765                case com.android.internal.R.styleable.TextAppearance_fontFamily:
766                    fontFamily = appearance.getString(attr);
767                    break;
768
769                case com.android.internal.R.styleable.TextAppearance_textStyle:
770                    styleIndex = appearance.getInt(attr, -1);
771                    break;
772
773                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
774                    allCaps = appearance.getBoolean(attr, false);
775                    break;
776
777                case com.android.internal.R.styleable.TextAppearance_shadowColor:
778                    shadowcolor = appearance.getInt(attr, 0);
779                    break;
780
781                case com.android.internal.R.styleable.TextAppearance_shadowDx:
782                    dx = appearance.getFloat(attr, 0);
783                    break;
784
785                case com.android.internal.R.styleable.TextAppearance_shadowDy:
786                    dy = appearance.getFloat(attr, 0);
787                    break;
788
789                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
790                    r = appearance.getFloat(attr, 0);
791                    break;
792
793                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
794                    elegant = appearance.getBoolean(attr, false);
795                    break;
796
797                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
798                    letterSpacing = appearance.getFloat(attr, 0);
799                    break;
800
801                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
802                    fontFeatureSettings = appearance.getString(attr);
803                    break;
804                }
805            }
806
807            appearance.recycle();
808        }
809
810        boolean editable = getDefaultEditable();
811        CharSequence inputMethod = null;
812        int numeric = 0;
813        CharSequence digits = null;
814        boolean phone = false;
815        boolean autotext = false;
816        int autocap = -1;
817        int buffertype = 0;
818        boolean selectallonfocus = false;
819        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
820            drawableBottom = null, drawableStart = null, drawableEnd = null;
821        ColorStateList drawableTint = null;
822        PorterDuff.Mode drawableTintMode = null;
823        int drawablePadding = 0;
824        int ellipsize = -1;
825        boolean singleLine = false;
826        int maxlength = -1;
827        CharSequence text = "";
828        CharSequence hint = null;
829        boolean password = false;
830        int inputType = EditorInfo.TYPE_NULL;
831
832        a = theme.obtainStyledAttributes(
833                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
834
835        int n = a.getIndexCount();
836        for (int i = 0; i < n; i++) {
837            int attr = a.getIndex(i);
838
839            switch (attr) {
840            case com.android.internal.R.styleable.TextView_editable:
841                editable = a.getBoolean(attr, editable);
842                break;
843
844            case com.android.internal.R.styleable.TextView_inputMethod:
845                inputMethod = a.getText(attr);
846                break;
847
848            case com.android.internal.R.styleable.TextView_numeric:
849                numeric = a.getInt(attr, numeric);
850                break;
851
852            case com.android.internal.R.styleable.TextView_digits:
853                digits = a.getText(attr);
854                break;
855
856            case com.android.internal.R.styleable.TextView_phoneNumber:
857                phone = a.getBoolean(attr, phone);
858                break;
859
860            case com.android.internal.R.styleable.TextView_autoText:
861                autotext = a.getBoolean(attr, autotext);
862                break;
863
864            case com.android.internal.R.styleable.TextView_capitalize:
865                autocap = a.getInt(attr, autocap);
866                break;
867
868            case com.android.internal.R.styleable.TextView_bufferType:
869                buffertype = a.getInt(attr, buffertype);
870                break;
871
872            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
873                selectallonfocus = a.getBoolean(attr, selectallonfocus);
874                break;
875
876            case com.android.internal.R.styleable.TextView_autoLink:
877                mAutoLinkMask = a.getInt(attr, 0);
878                break;
879
880            case com.android.internal.R.styleable.TextView_linksClickable:
881                mLinksClickable = a.getBoolean(attr, true);
882                break;
883
884            case com.android.internal.R.styleable.TextView_drawableLeft:
885                drawableLeft = a.getDrawable(attr);
886                break;
887
888            case com.android.internal.R.styleable.TextView_drawableTop:
889                drawableTop = a.getDrawable(attr);
890                break;
891
892            case com.android.internal.R.styleable.TextView_drawableRight:
893                drawableRight = a.getDrawable(attr);
894                break;
895
896            case com.android.internal.R.styleable.TextView_drawableBottom:
897                drawableBottom = a.getDrawable(attr);
898                break;
899
900            case com.android.internal.R.styleable.TextView_drawableStart:
901                drawableStart = a.getDrawable(attr);
902                break;
903
904            case com.android.internal.R.styleable.TextView_drawableEnd:
905                drawableEnd = a.getDrawable(attr);
906                break;
907
908            case com.android.internal.R.styleable.TextView_drawableTint:
909                drawableTint = a.getColorStateList(attr);
910                break;
911
912            case com.android.internal.R.styleable.TextView_drawableTintMode:
913                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
914                break;
915
916            case com.android.internal.R.styleable.TextView_drawablePadding:
917                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
918                break;
919
920            case com.android.internal.R.styleable.TextView_maxLines:
921                setMaxLines(a.getInt(attr, -1));
922                break;
923
924            case com.android.internal.R.styleable.TextView_maxHeight:
925                setMaxHeight(a.getDimensionPixelSize(attr, -1));
926                break;
927
928            case com.android.internal.R.styleable.TextView_lines:
929                setLines(a.getInt(attr, -1));
930                break;
931
932            case com.android.internal.R.styleable.TextView_height:
933                setHeight(a.getDimensionPixelSize(attr, -1));
934                break;
935
936            case com.android.internal.R.styleable.TextView_minLines:
937                setMinLines(a.getInt(attr, -1));
938                break;
939
940            case com.android.internal.R.styleable.TextView_minHeight:
941                setMinHeight(a.getDimensionPixelSize(attr, -1));
942                break;
943
944            case com.android.internal.R.styleable.TextView_maxEms:
945                setMaxEms(a.getInt(attr, -1));
946                break;
947
948            case com.android.internal.R.styleable.TextView_maxWidth:
949                setMaxWidth(a.getDimensionPixelSize(attr, -1));
950                break;
951
952            case com.android.internal.R.styleable.TextView_ems:
953                setEms(a.getInt(attr, -1));
954                break;
955
956            case com.android.internal.R.styleable.TextView_width:
957                setWidth(a.getDimensionPixelSize(attr, -1));
958                break;
959
960            case com.android.internal.R.styleable.TextView_minEms:
961                setMinEms(a.getInt(attr, -1));
962                break;
963
964            case com.android.internal.R.styleable.TextView_minWidth:
965                setMinWidth(a.getDimensionPixelSize(attr, -1));
966                break;
967
968            case com.android.internal.R.styleable.TextView_gravity:
969                setGravity(a.getInt(attr, -1));
970                break;
971
972            case com.android.internal.R.styleable.TextView_hint:
973                hint = a.getText(attr);
974                break;
975
976            case com.android.internal.R.styleable.TextView_text:
977                text = a.getText(attr);
978                break;
979
980            case com.android.internal.R.styleable.TextView_scrollHorizontally:
981                if (a.getBoolean(attr, false)) {
982                    setHorizontallyScrolling(true);
983                }
984                break;
985
986            case com.android.internal.R.styleable.TextView_singleLine:
987                singleLine = a.getBoolean(attr, singleLine);
988                break;
989
990            case com.android.internal.R.styleable.TextView_ellipsize:
991                ellipsize = a.getInt(attr, ellipsize);
992                break;
993
994            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
995                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
996                break;
997
998            case com.android.internal.R.styleable.TextView_includeFontPadding:
999                if (!a.getBoolean(attr, true)) {
1000                    setIncludeFontPadding(false);
1001                }
1002                break;
1003
1004            case com.android.internal.R.styleable.TextView_cursorVisible:
1005                if (!a.getBoolean(attr, true)) {
1006                    setCursorVisible(false);
1007                }
1008                break;
1009
1010            case com.android.internal.R.styleable.TextView_maxLength:
1011                maxlength = a.getInt(attr, -1);
1012                break;
1013
1014            case com.android.internal.R.styleable.TextView_textScaleX:
1015                setTextScaleX(a.getFloat(attr, 1.0f));
1016                break;
1017
1018            case com.android.internal.R.styleable.TextView_freezesText:
1019                mFreezesText = a.getBoolean(attr, false);
1020                break;
1021
1022            case com.android.internal.R.styleable.TextView_shadowColor:
1023                shadowcolor = a.getInt(attr, 0);
1024                break;
1025
1026            case com.android.internal.R.styleable.TextView_shadowDx:
1027                dx = a.getFloat(attr, 0);
1028                break;
1029
1030            case com.android.internal.R.styleable.TextView_shadowDy:
1031                dy = a.getFloat(attr, 0);
1032                break;
1033
1034            case com.android.internal.R.styleable.TextView_shadowRadius:
1035                r = a.getFloat(attr, 0);
1036                break;
1037
1038            case com.android.internal.R.styleable.TextView_enabled:
1039                setEnabled(a.getBoolean(attr, isEnabled()));
1040                break;
1041
1042            case com.android.internal.R.styleable.TextView_textColorHighlight:
1043                textColorHighlight = a.getColor(attr, textColorHighlight);
1044                break;
1045
1046            case com.android.internal.R.styleable.TextView_textColor:
1047                textColor = a.getColorStateList(attr);
1048                break;
1049
1050            case com.android.internal.R.styleable.TextView_textColorHint:
1051                textColorHint = a.getColorStateList(attr);
1052                break;
1053
1054            case com.android.internal.R.styleable.TextView_textColorLink:
1055                textColorLink = a.getColorStateList(attr);
1056                break;
1057
1058            case com.android.internal.R.styleable.TextView_textSize:
1059                textSize = a.getDimensionPixelSize(attr, textSize);
1060                break;
1061
1062            case com.android.internal.R.styleable.TextView_typeface:
1063                typefaceIndex = a.getInt(attr, typefaceIndex);
1064                break;
1065
1066            case com.android.internal.R.styleable.TextView_textStyle:
1067                styleIndex = a.getInt(attr, styleIndex);
1068                break;
1069
1070            case com.android.internal.R.styleable.TextView_fontFamily:
1071                fontFamily = a.getString(attr);
1072                fontFamilyExplicit = true;
1073                break;
1074
1075            case com.android.internal.R.styleable.TextView_password:
1076                password = a.getBoolean(attr, password);
1077                break;
1078
1079            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1080                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1084                mSpacingMult = a.getFloat(attr, mSpacingMult);
1085                break;
1086
1087            case com.android.internal.R.styleable.TextView_inputType:
1088                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1089                break;
1090
1091            case com.android.internal.R.styleable.TextView_allowUndo:
1092                createEditorIfNeeded();
1093                mEditor.mAllowUndo = a.getBoolean(attr, true);
1094                break;
1095
1096            case com.android.internal.R.styleable.TextView_imeOptions:
1097                createEditorIfNeeded();
1098                mEditor.createInputContentTypeIfNeeded();
1099                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1100                        mEditor.mInputContentType.imeOptions);
1101                break;
1102
1103            case com.android.internal.R.styleable.TextView_imeActionLabel:
1104                createEditorIfNeeded();
1105                mEditor.createInputContentTypeIfNeeded();
1106                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1107                break;
1108
1109            case com.android.internal.R.styleable.TextView_imeActionId:
1110                createEditorIfNeeded();
1111                mEditor.createInputContentTypeIfNeeded();
1112                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1113                        mEditor.mInputContentType.imeActionId);
1114                break;
1115
1116            case com.android.internal.R.styleable.TextView_privateImeOptions:
1117                setPrivateImeOptions(a.getString(attr));
1118                break;
1119
1120            case com.android.internal.R.styleable.TextView_editorExtras:
1121                try {
1122                    setInputExtras(a.getResourceId(attr, 0));
1123                } catch (XmlPullParserException e) {
1124                    Log.w(LOG_TAG, "Failure reading input extras", e);
1125                } catch (IOException e) {
1126                    Log.w(LOG_TAG, "Failure reading input extras", e);
1127                }
1128                break;
1129
1130            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1131                mCursorDrawableRes = a.getResourceId(attr, 0);
1132                break;
1133
1134            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1135                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1136                break;
1137
1138            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1139                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1140                break;
1141
1142            case com.android.internal.R.styleable.TextView_textSelectHandle:
1143                mTextSelectHandleRes = a.getResourceId(attr, 0);
1144                break;
1145
1146            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1147                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1148                break;
1149
1150            case com.android.internal.R.styleable.TextView_textIsSelectable:
1151                setTextIsSelectable(a.getBoolean(attr, false));
1152                break;
1153
1154            case com.android.internal.R.styleable.TextView_textAllCaps:
1155                allCaps = a.getBoolean(attr, false);
1156                break;
1157
1158            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1159                elegant = a.getBoolean(attr, false);
1160                break;
1161
1162            case com.android.internal.R.styleable.TextView_letterSpacing:
1163                letterSpacing = a.getFloat(attr, 0);
1164                break;
1165
1166            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1167                fontFeatureSettings = a.getString(attr);
1168                break;
1169
1170            case com.android.internal.R.styleable.TextView_breakStrategy:
1171                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1172                break;
1173
1174            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1175                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1176                break;
1177            }
1178        }
1179        a.recycle();
1180
1181        BufferType bufferType = BufferType.EDITABLE;
1182
1183        final int variation =
1184                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1185        final boolean passwordInputType = variation
1186                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1187        final boolean webPasswordInputType = variation
1188                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1189        final boolean numberPasswordInputType = variation
1190                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1191
1192        if (inputMethod != null) {
1193            Class<?> c;
1194
1195            try {
1196                c = Class.forName(inputMethod.toString());
1197            } catch (ClassNotFoundException ex) {
1198                throw new RuntimeException(ex);
1199            }
1200
1201            try {
1202                createEditorIfNeeded();
1203                mEditor.mKeyListener = (KeyListener) c.newInstance();
1204            } catch (InstantiationException ex) {
1205                throw new RuntimeException(ex);
1206            } catch (IllegalAccessException ex) {
1207                throw new RuntimeException(ex);
1208            }
1209            try {
1210                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1211                        ? inputType
1212                        : mEditor.mKeyListener.getInputType();
1213            } catch (IncompatibleClassChangeError e) {
1214                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1215            }
1216        } else if (digits != null) {
1217            createEditorIfNeeded();
1218            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1219            // If no input type was specified, we will default to generic
1220            // text, since we can't tell the IME about the set of digits
1221            // that was selected.
1222            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1223                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1224        } else if (inputType != EditorInfo.TYPE_NULL) {
1225            setInputType(inputType, true);
1226            // If set, the input type overrides what was set using the deprecated singleLine flag.
1227            singleLine = !isMultilineInputType(inputType);
1228        } else if (phone) {
1229            createEditorIfNeeded();
1230            mEditor.mKeyListener = DialerKeyListener.getInstance();
1231            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1232        } else if (numeric != 0) {
1233            createEditorIfNeeded();
1234            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1235                                                   (numeric & DECIMAL) != 0);
1236            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1237            if ((numeric & SIGNED) != 0) {
1238                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1239            }
1240            if ((numeric & DECIMAL) != 0) {
1241                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1242            }
1243            mEditor.mInputType = inputType;
1244        } else if (autotext || autocap != -1) {
1245            TextKeyListener.Capitalize cap;
1246
1247            inputType = EditorInfo.TYPE_CLASS_TEXT;
1248
1249            switch (autocap) {
1250            case 1:
1251                cap = TextKeyListener.Capitalize.SENTENCES;
1252                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1253                break;
1254
1255            case 2:
1256                cap = TextKeyListener.Capitalize.WORDS;
1257                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1258                break;
1259
1260            case 3:
1261                cap = TextKeyListener.Capitalize.CHARACTERS;
1262                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1263                break;
1264
1265            default:
1266                cap = TextKeyListener.Capitalize.NONE;
1267                break;
1268            }
1269
1270            createEditorIfNeeded();
1271            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1272            mEditor.mInputType = inputType;
1273        } else if (isTextSelectable()) {
1274            // Prevent text changes from keyboard.
1275            if (mEditor != null) {
1276                mEditor.mKeyListener = null;
1277                mEditor.mInputType = EditorInfo.TYPE_NULL;
1278            }
1279            bufferType = BufferType.SPANNABLE;
1280            // So that selection can be changed using arrow keys and touch is handled.
1281            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1282        } else if (editable) {
1283            createEditorIfNeeded();
1284            mEditor.mKeyListener = TextKeyListener.getInstance();
1285            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1286        } else {
1287            if (mEditor != null) mEditor.mKeyListener = null;
1288
1289            switch (buffertype) {
1290                case 0:
1291                    bufferType = BufferType.NORMAL;
1292                    break;
1293                case 1:
1294                    bufferType = BufferType.SPANNABLE;
1295                    break;
1296                case 2:
1297                    bufferType = BufferType.EDITABLE;
1298                    break;
1299            }
1300        }
1301
1302        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1303                webPasswordInputType, numberPasswordInputType);
1304
1305        if (selectallonfocus) {
1306            createEditorIfNeeded();
1307            mEditor.mSelectAllOnFocus = true;
1308
1309            if (bufferType == BufferType.NORMAL)
1310                bufferType = BufferType.SPANNABLE;
1311        }
1312
1313        // Set up the tint (if needed) before setting the drawables so that it
1314        // gets applied correctly.
1315        if (drawableTint != null || drawableTintMode != null) {
1316            if (mDrawables == null) {
1317                mDrawables = new Drawables(context);
1318            }
1319            if (drawableTint != null) {
1320                mDrawables.mTintList = drawableTint;
1321                mDrawables.mHasTint = true;
1322            }
1323            if (drawableTintMode != null) {
1324                mDrawables.mTintMode = drawableTintMode;
1325                mDrawables.mHasTintMode = true;
1326            }
1327        }
1328
1329        // This call will save the initial left/right drawables
1330        setCompoundDrawablesWithIntrinsicBounds(
1331            drawableLeft, drawableTop, drawableRight, drawableBottom);
1332        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1333        setCompoundDrawablePadding(drawablePadding);
1334
1335        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1336        // of lines of height are unchanged for multi-line TextViews.
1337        setInputTypeSingleLine(singleLine);
1338        applySingleLine(singleLine, singleLine, singleLine);
1339
1340        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1341                ellipsize = 3; // END
1342        }
1343
1344        switch (ellipsize) {
1345            case 1:
1346                setEllipsize(TextUtils.TruncateAt.START);
1347                break;
1348            case 2:
1349                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1350                break;
1351            case 3:
1352                setEllipsize(TextUtils.TruncateAt.END);
1353                break;
1354            case 4:
1355                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1356                    setHorizontalFadingEdgeEnabled(true);
1357                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1358                } else {
1359                    setHorizontalFadingEdgeEnabled(false);
1360                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1361                }
1362                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1363                break;
1364        }
1365
1366        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1367        setHintTextColor(textColorHint);
1368        setLinkTextColor(textColorLink);
1369        if (textColorHighlight != 0) {
1370            setHighlightColor(textColorHighlight);
1371        }
1372        setRawTextSize(textSize);
1373        setElegantTextHeight(elegant);
1374        setLetterSpacing(letterSpacing);
1375        setFontFeatureSettings(fontFeatureSettings);
1376
1377        if (allCaps) {
1378            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1379        }
1380
1381        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1382            setTransformationMethod(PasswordTransformationMethod.getInstance());
1383            typefaceIndex = MONOSPACE;
1384        } else if (mEditor != null &&
1385                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1386                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1387            typefaceIndex = MONOSPACE;
1388        }
1389
1390        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1391            fontFamily = null;
1392        }
1393        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1394
1395        if (shadowcolor != 0) {
1396            setShadowLayer(r, dx, dy, shadowcolor);
1397        }
1398
1399        if (maxlength >= 0) {
1400            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1401        } else {
1402            setFilters(NO_FILTERS);
1403        }
1404
1405        setText(text, bufferType);
1406        if (hint != null) setHint(hint);
1407
1408        /*
1409         * Views are not normally focusable unless specified to be.
1410         * However, TextViews that have input or movement methods *are*
1411         * focusable by default.
1412         */
1413        a = context.obtainStyledAttributes(
1414                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1415
1416        boolean focusable = mMovement != null || getKeyListener() != null;
1417        boolean clickable = focusable || isClickable();
1418        boolean longClickable = focusable || isLongClickable();
1419
1420        n = a.getIndexCount();
1421        for (int i = 0; i < n; i++) {
1422            int attr = a.getIndex(i);
1423
1424            switch (attr) {
1425            case com.android.internal.R.styleable.View_focusable:
1426                focusable = a.getBoolean(attr, focusable);
1427                break;
1428
1429            case com.android.internal.R.styleable.View_clickable:
1430                clickable = a.getBoolean(attr, clickable);
1431                break;
1432
1433            case com.android.internal.R.styleable.View_longClickable:
1434                longClickable = a.getBoolean(attr, longClickable);
1435                break;
1436            }
1437        }
1438        a.recycle();
1439
1440        setFocusable(focusable);
1441        setClickable(clickable);
1442        setLongClickable(longClickable);
1443
1444        if (mEditor != null) mEditor.prepareCursorControllers();
1445
1446        // If not explicitly specified this view is important for accessibility.
1447        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1448            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1449        }
1450    }
1451
1452    private int[] parseDimensionArray(TypedArray dimens) {
1453        if (dimens == null) {
1454            return null;
1455        }
1456        int[] result = new int[dimens.length()];
1457        for (int i = 0; i < result.length; i++) {
1458            result[i] = dimens.getDimensionPixelSize(i, 0);
1459        }
1460        return result;
1461    }
1462
1463    /**
1464     * @hide
1465     */
1466    @Override
1467    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1468        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1469            if (resultCode == Activity.RESULT_OK && data != null) {
1470                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1471                if (result != null) {
1472                    if (isTextEditable()) {
1473                        replaceSelectionWithText(result);
1474                    } else {
1475                        if (result.length() > 0) {
1476                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1477                                .show();
1478                        }
1479                    }
1480                }
1481            }
1482            if (mEditor.hasSelectionController()) {
1483                mEditor.startSelectionActionMode();
1484            }
1485        }
1486    }
1487
1488    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1489        Typeface tf = null;
1490        if (familyName != null) {
1491            tf = Typeface.create(familyName, styleIndex);
1492            if (tf != null) {
1493                setTypeface(tf);
1494                return;
1495            }
1496        }
1497        switch (typefaceIndex) {
1498            case SANS:
1499                tf = Typeface.SANS_SERIF;
1500                break;
1501
1502            case SERIF:
1503                tf = Typeface.SERIF;
1504                break;
1505
1506            case MONOSPACE:
1507                tf = Typeface.MONOSPACE;
1508                break;
1509        }
1510
1511        setTypeface(tf, styleIndex);
1512    }
1513
1514    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1515        boolean hasRelativeDrawables = (start != null) || (end != null);
1516        if (hasRelativeDrawables) {
1517            Drawables dr = mDrawables;
1518            if (dr == null) {
1519                mDrawables = dr = new Drawables(getContext());
1520            }
1521            mDrawables.mOverride = true;
1522            final Rect compoundRect = dr.mCompoundRect;
1523            int[] state = getDrawableState();
1524            if (start != null) {
1525                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1526                start.setState(state);
1527                start.copyBounds(compoundRect);
1528                start.setCallback(this);
1529
1530                dr.mDrawableStart = start;
1531                dr.mDrawableSizeStart = compoundRect.width();
1532                dr.mDrawableHeightStart = compoundRect.height();
1533            } else {
1534                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1535            }
1536            if (end != null) {
1537                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1538                end.setState(state);
1539                end.copyBounds(compoundRect);
1540                end.setCallback(this);
1541
1542                dr.mDrawableEnd = end;
1543                dr.mDrawableSizeEnd = compoundRect.width();
1544                dr.mDrawableHeightEnd = compoundRect.height();
1545            } else {
1546                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1547            }
1548            resetResolvedDrawables();
1549            resolveDrawables();
1550            applyCompoundDrawableTint();
1551        }
1552    }
1553
1554    @Override
1555    public void setEnabled(boolean enabled) {
1556        if (enabled == isEnabled()) {
1557            return;
1558        }
1559
1560        if (!enabled) {
1561            // Hide the soft input if the currently active TextView is disabled
1562            InputMethodManager imm = InputMethodManager.peekInstance();
1563            if (imm != null && imm.isActive(this)) {
1564                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1565            }
1566        }
1567
1568        super.setEnabled(enabled);
1569
1570        if (enabled) {
1571            // Make sure IME is updated with current editor info.
1572            InputMethodManager imm = InputMethodManager.peekInstance();
1573            if (imm != null) imm.restartInput(this);
1574        }
1575
1576        // Will change text color
1577        if (mEditor != null) {
1578            mEditor.invalidateTextDisplayList();
1579            mEditor.prepareCursorControllers();
1580
1581            // start or stop the cursor blinking as appropriate
1582            mEditor.makeBlink();
1583        }
1584    }
1585
1586    /**
1587     * Sets the typeface and style in which the text should be displayed,
1588     * and turns on the fake bold and italic bits in the Paint if the
1589     * Typeface that you provided does not have all the bits in the
1590     * style that you specified.
1591     *
1592     * @attr ref android.R.styleable#TextView_typeface
1593     * @attr ref android.R.styleable#TextView_textStyle
1594     */
1595    public void setTypeface(Typeface tf, int style) {
1596        if (style > 0) {
1597            if (tf == null) {
1598                tf = Typeface.defaultFromStyle(style);
1599            } else {
1600                tf = Typeface.create(tf, style);
1601            }
1602
1603            setTypeface(tf);
1604            // now compute what (if any) algorithmic styling is needed
1605            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1606            int need = style & ~typefaceStyle;
1607            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1608            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1609        } else {
1610            mTextPaint.setFakeBoldText(false);
1611            mTextPaint.setTextSkewX(0);
1612            setTypeface(tf);
1613        }
1614    }
1615
1616    /**
1617     * Subclasses override this to specify that they have a KeyListener
1618     * by default even if not specifically called for in the XML options.
1619     */
1620    protected boolean getDefaultEditable() {
1621        return false;
1622    }
1623
1624    /**
1625     * Subclasses override this to specify a default movement method.
1626     */
1627    protected MovementMethod getDefaultMovementMethod() {
1628        return null;
1629    }
1630
1631    /**
1632     * Return the text the TextView is displaying. If setText() was called with
1633     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1634     * the return value from this method to Spannable or Editable, respectively.
1635     *
1636     * Note: The content of the return value should not be modified. If you want
1637     * a modifiable one, you should make your own copy first.
1638     *
1639     * @attr ref android.R.styleable#TextView_text
1640     */
1641    @ViewDebug.CapturedViewProperty
1642    public CharSequence getText() {
1643        return mText;
1644    }
1645
1646    /**
1647     * Returns the length, in characters, of the text managed by this TextView
1648     */
1649    public int length() {
1650        return mText.length();
1651    }
1652
1653    /**
1654     * Return the text the TextView is displaying as an Editable object.  If
1655     * the text is not editable, null is returned.
1656     *
1657     * @see #getText
1658     */
1659    public Editable getEditableText() {
1660        return (mText instanceof Editable) ? (Editable)mText : null;
1661    }
1662
1663    /**
1664     * @return the height of one standard line in pixels.  Note that markup
1665     * within the text can cause individual lines to be taller or shorter
1666     * than this height, and the layout may contain additional first-
1667     * or last-line padding.
1668     */
1669    public int getLineHeight() {
1670        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1671    }
1672
1673    /**
1674     * @return the Layout that is currently being used to display the text.
1675     * This can be null if the text or width has recently changes.
1676     */
1677    public final Layout getLayout() {
1678        return mLayout;
1679    }
1680
1681    /**
1682     * @return the Layout that is currently being used to display the hint text.
1683     * This can be null.
1684     */
1685    final Layout getHintLayout() {
1686        return mHintLayout;
1687    }
1688
1689    /**
1690     * Retrieve the {@link android.content.UndoManager} that is currently associated
1691     * with this TextView.  By default there is no associated UndoManager, so null
1692     * is returned.  One can be associated with the TextView through
1693     * {@link #setUndoManager(android.content.UndoManager, String)}
1694     *
1695     * @hide
1696     */
1697    public final UndoManager getUndoManager() {
1698        // TODO: Consider supporting a global undo manager.
1699        throw new UnsupportedOperationException("not implemented");
1700    }
1701
1702
1703    /**
1704     * @hide
1705     */
1706    @VisibleForTesting
1707    public final Editor getEditorForTesting() {
1708        return mEditor;
1709    }
1710
1711    /**
1712     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1713     * done, all edit operations on the TextView will result in appropriate
1714     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1715     * stack.
1716     *
1717     * @param undoManager The {@link android.content.UndoManager} to associate with
1718     * this TextView, or null to clear any existing association.
1719     * @param tag String tag identifying this particular TextView owner in the
1720     * UndoManager.  This is used to keep the correct association with the
1721     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1722     *
1723     * @hide
1724     */
1725    public final void setUndoManager(UndoManager undoManager, String tag) {
1726        // TODO: Consider supporting a global undo manager. An implementation will need to:
1727        // * createEditorIfNeeded()
1728        // * Promote to BufferType.EDITABLE if needed.
1729        // * Update the UndoManager and UndoOwner.
1730        // Likewise it will need to be able to restore the default UndoManager.
1731        throw new UnsupportedOperationException("not implemented");
1732    }
1733
1734    /**
1735     * @return the current key listener for this TextView.
1736     * This will frequently be null for non-EditText TextViews.
1737     *
1738     * @attr ref android.R.styleable#TextView_numeric
1739     * @attr ref android.R.styleable#TextView_digits
1740     * @attr ref android.R.styleable#TextView_phoneNumber
1741     * @attr ref android.R.styleable#TextView_inputMethod
1742     * @attr ref android.R.styleable#TextView_capitalize
1743     * @attr ref android.R.styleable#TextView_autoText
1744     */
1745    public final KeyListener getKeyListener() {
1746        return mEditor == null ? null : mEditor.mKeyListener;
1747    }
1748
1749    /**
1750     * Sets the key listener to be used with this TextView.  This can be null
1751     * to disallow user input.  Note that this method has significant and
1752     * subtle interactions with soft keyboards and other input method:
1753     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1754     * for important details.  Calling this method will replace the current
1755     * content type of the text view with the content type returned by the
1756     * key listener.
1757     * <p>
1758     * Be warned that if you want a TextView with a key listener or movement
1759     * method not to be focusable, or if you want a TextView without a
1760     * key listener or movement method to be focusable, you must call
1761     * {@link #setFocusable} again after calling this to get the focusability
1762     * back the way you want it.
1763     *
1764     * @attr ref android.R.styleable#TextView_numeric
1765     * @attr ref android.R.styleable#TextView_digits
1766     * @attr ref android.R.styleable#TextView_phoneNumber
1767     * @attr ref android.R.styleable#TextView_inputMethod
1768     * @attr ref android.R.styleable#TextView_capitalize
1769     * @attr ref android.R.styleable#TextView_autoText
1770     */
1771    public void setKeyListener(KeyListener input) {
1772        setKeyListenerOnly(input);
1773        fixFocusableAndClickableSettings();
1774
1775        if (input != null) {
1776            createEditorIfNeeded();
1777            try {
1778                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1779            } catch (IncompatibleClassChangeError e) {
1780                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1781            }
1782            // Change inputType, without affecting transformation.
1783            // No need to applySingleLine since mSingleLine is unchanged.
1784            setInputTypeSingleLine(mSingleLine);
1785        } else {
1786            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1787        }
1788
1789        InputMethodManager imm = InputMethodManager.peekInstance();
1790        if (imm != null) imm.restartInput(this);
1791    }
1792
1793    private void setKeyListenerOnly(KeyListener input) {
1794        if (mEditor == null && input == null) return; // null is the default value
1795
1796        createEditorIfNeeded();
1797        if (mEditor.mKeyListener != input) {
1798            mEditor.mKeyListener = input;
1799            if (input != null && !(mText instanceof Editable)) {
1800                setText(mText);
1801            }
1802
1803            setFilters((Editable) mText, mFilters);
1804        }
1805    }
1806
1807    /**
1808     * @return the movement method being used for this TextView.
1809     * This will frequently be null for non-EditText TextViews.
1810     */
1811    public final MovementMethod getMovementMethod() {
1812        return mMovement;
1813    }
1814
1815    /**
1816     * Sets the movement method (arrow key handler) to be used for
1817     * this TextView.  This can be null to disallow using the arrow keys
1818     * to move the cursor or scroll the view.
1819     * <p>
1820     * Be warned that if you want a TextView with a key listener or movement
1821     * method not to be focusable, or if you want a TextView without a
1822     * key listener or movement method to be focusable, you must call
1823     * {@link #setFocusable} again after calling this to get the focusability
1824     * back the way you want it.
1825     */
1826    public final void setMovementMethod(MovementMethod movement) {
1827        if (mMovement != movement) {
1828            mMovement = movement;
1829
1830            if (movement != null && !(mText instanceof Spannable)) {
1831                setText(mText);
1832            }
1833
1834            fixFocusableAndClickableSettings();
1835
1836            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1837            // mMovement
1838            if (mEditor != null) mEditor.prepareCursorControllers();
1839        }
1840    }
1841
1842    private void fixFocusableAndClickableSettings() {
1843        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1844            setFocusable(true);
1845            setClickable(true);
1846            setLongClickable(true);
1847        } else {
1848            setFocusable(false);
1849            setClickable(false);
1850            setLongClickable(false);
1851        }
1852    }
1853
1854    /**
1855     * @return the current transformation method for this TextView.
1856     * This will frequently be null except for single-line and password
1857     * fields.
1858     *
1859     * @attr ref android.R.styleable#TextView_password
1860     * @attr ref android.R.styleable#TextView_singleLine
1861     */
1862    public final TransformationMethod getTransformationMethod() {
1863        return mTransformation;
1864    }
1865
1866    /**
1867     * Sets the transformation that is applied to the text that this
1868     * TextView is displaying.
1869     *
1870     * @attr ref android.R.styleable#TextView_password
1871     * @attr ref android.R.styleable#TextView_singleLine
1872     */
1873    public final void setTransformationMethod(TransformationMethod method) {
1874        if (method == mTransformation) {
1875            // Avoid the setText() below if the transformation is
1876            // the same.
1877            return;
1878        }
1879        if (mTransformation != null) {
1880            if (mText instanceof Spannable) {
1881                ((Spannable) mText).removeSpan(mTransformation);
1882            }
1883        }
1884
1885        mTransformation = method;
1886
1887        if (method instanceof TransformationMethod2) {
1888            TransformationMethod2 method2 = (TransformationMethod2) method;
1889            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1890            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1891        } else {
1892            mAllowTransformationLengthChange = false;
1893        }
1894
1895        setText(mText);
1896
1897        if (hasPasswordTransformationMethod()) {
1898            notifyViewAccessibilityStateChangedIfNeeded(
1899                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1900        }
1901    }
1902
1903    /**
1904     * Returns the top padding of the view, plus space for the top
1905     * Drawable if any.
1906     */
1907    public int getCompoundPaddingTop() {
1908        final Drawables dr = mDrawables;
1909        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1910            return mPaddingTop;
1911        } else {
1912            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1913        }
1914    }
1915
1916    /**
1917     * Returns the bottom padding of the view, plus space for the bottom
1918     * Drawable if any.
1919     */
1920    public int getCompoundPaddingBottom() {
1921        final Drawables dr = mDrawables;
1922        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1923            return mPaddingBottom;
1924        } else {
1925            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1926        }
1927    }
1928
1929    /**
1930     * Returns the left padding of the view, plus space for the left
1931     * Drawable if any.
1932     */
1933    public int getCompoundPaddingLeft() {
1934        final Drawables dr = mDrawables;
1935        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1936            return mPaddingLeft;
1937        } else {
1938            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1939        }
1940    }
1941
1942    /**
1943     * Returns the right padding of the view, plus space for the right
1944     * Drawable if any.
1945     */
1946    public int getCompoundPaddingRight() {
1947        final Drawables dr = mDrawables;
1948        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1949            return mPaddingRight;
1950        } else {
1951            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1952        }
1953    }
1954
1955    /**
1956     * Returns the start padding of the view, plus space for the start
1957     * Drawable if any.
1958     */
1959    public int getCompoundPaddingStart() {
1960        resolveDrawables();
1961        switch(getLayoutDirection()) {
1962            default:
1963            case LAYOUT_DIRECTION_LTR:
1964                return getCompoundPaddingLeft();
1965            case LAYOUT_DIRECTION_RTL:
1966                return getCompoundPaddingRight();
1967        }
1968    }
1969
1970    /**
1971     * Returns the end padding of the view, plus space for the end
1972     * Drawable if any.
1973     */
1974    public int getCompoundPaddingEnd() {
1975        resolveDrawables();
1976        switch(getLayoutDirection()) {
1977            default:
1978            case LAYOUT_DIRECTION_LTR:
1979                return getCompoundPaddingRight();
1980            case LAYOUT_DIRECTION_RTL:
1981                return getCompoundPaddingLeft();
1982        }
1983    }
1984
1985    /**
1986     * Returns the extended top padding of the view, including both the
1987     * top Drawable if any and any extra space to keep more than maxLines
1988     * of text from showing.  It is only valid to call this after measuring.
1989     */
1990    public int getExtendedPaddingTop() {
1991        if (mMaxMode != LINES) {
1992            return getCompoundPaddingTop();
1993        }
1994
1995        if (mLayout == null) {
1996            assumeLayout();
1997        }
1998
1999        if (mLayout.getLineCount() <= mMaximum) {
2000            return getCompoundPaddingTop();
2001        }
2002
2003        int top = getCompoundPaddingTop();
2004        int bottom = getCompoundPaddingBottom();
2005        int viewht = getHeight() - top - bottom;
2006        int layoutht = mLayout.getLineTop(mMaximum);
2007
2008        if (layoutht >= viewht) {
2009            return top;
2010        }
2011
2012        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2013        if (gravity == Gravity.TOP) {
2014            return top;
2015        } else if (gravity == Gravity.BOTTOM) {
2016            return top + viewht - layoutht;
2017        } else { // (gravity == Gravity.CENTER_VERTICAL)
2018            return top + (viewht - layoutht) / 2;
2019        }
2020    }
2021
2022    /**
2023     * Returns the extended bottom padding of the view, including both the
2024     * bottom Drawable if any and any extra space to keep more than maxLines
2025     * of text from showing.  It is only valid to call this after measuring.
2026     */
2027    public int getExtendedPaddingBottom() {
2028        if (mMaxMode != LINES) {
2029            return getCompoundPaddingBottom();
2030        }
2031
2032        if (mLayout == null) {
2033            assumeLayout();
2034        }
2035
2036        if (mLayout.getLineCount() <= mMaximum) {
2037            return getCompoundPaddingBottom();
2038        }
2039
2040        int top = getCompoundPaddingTop();
2041        int bottom = getCompoundPaddingBottom();
2042        int viewht = getHeight() - top - bottom;
2043        int layoutht = mLayout.getLineTop(mMaximum);
2044
2045        if (layoutht >= viewht) {
2046            return bottom;
2047        }
2048
2049        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2050        if (gravity == Gravity.TOP) {
2051            return bottom + viewht - layoutht;
2052        } else if (gravity == Gravity.BOTTOM) {
2053            return bottom;
2054        } else { // (gravity == Gravity.CENTER_VERTICAL)
2055            return bottom + (viewht - layoutht) / 2;
2056        }
2057    }
2058
2059    /**
2060     * Returns the total left padding of the view, including the left
2061     * Drawable if any.
2062     */
2063    public int getTotalPaddingLeft() {
2064        return getCompoundPaddingLeft();
2065    }
2066
2067    /**
2068     * Returns the total right padding of the view, including the right
2069     * Drawable if any.
2070     */
2071    public int getTotalPaddingRight() {
2072        return getCompoundPaddingRight();
2073    }
2074
2075    /**
2076     * Returns the total start padding of the view, including the start
2077     * Drawable if any.
2078     */
2079    public int getTotalPaddingStart() {
2080        return getCompoundPaddingStart();
2081    }
2082
2083    /**
2084     * Returns the total end padding of the view, including the end
2085     * Drawable if any.
2086     */
2087    public int getTotalPaddingEnd() {
2088        return getCompoundPaddingEnd();
2089    }
2090
2091    /**
2092     * Returns the total top padding of the view, including the top
2093     * Drawable if any, the extra space to keep more than maxLines
2094     * from showing, and the vertical offset for gravity, if any.
2095     */
2096    public int getTotalPaddingTop() {
2097        return getExtendedPaddingTop() + getVerticalOffset(true);
2098    }
2099
2100    /**
2101     * Returns the total bottom padding of the view, including the bottom
2102     * Drawable if any, the extra space to keep more than maxLines
2103     * from showing, and the vertical offset for gravity, if any.
2104     */
2105    public int getTotalPaddingBottom() {
2106        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2107    }
2108
2109    /**
2110     * Sets the Drawables (if any) to appear to the left of, above, to the
2111     * right of, and below the text. Use {@code null} if you do not want a
2112     * Drawable there. The Drawables must already have had
2113     * {@link Drawable#setBounds} called.
2114     * <p>
2115     * Calling this method will overwrite any Drawables previously set using
2116     * {@link #setCompoundDrawablesRelative} or related methods.
2117     *
2118     * @attr ref android.R.styleable#TextView_drawableLeft
2119     * @attr ref android.R.styleable#TextView_drawableTop
2120     * @attr ref android.R.styleable#TextView_drawableRight
2121     * @attr ref android.R.styleable#TextView_drawableBottom
2122     */
2123    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2124            @Nullable Drawable right, @Nullable Drawable bottom) {
2125        Drawables dr = mDrawables;
2126
2127        // We're switching to absolute, discard relative.
2128        if (dr != null) {
2129            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2130            dr.mDrawableStart = null;
2131            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2132            dr.mDrawableEnd = null;
2133            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2134            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2135        }
2136
2137        final boolean drawables = left != null || top != null || right != null || bottom != null;
2138        if (!drawables) {
2139            // Clearing drawables...  can we free the data structure?
2140            if (dr != null) {
2141                if (dr.mDrawablePadding == 0) {
2142                    mDrawables = null;
2143                } else {
2144                    // We need to retain the last set padding, so just clear
2145                    // out all of the fields in the existing structure.
2146                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2147                        if (dr.mShowing[i] != null) {
2148                            dr.mShowing[i].setCallback(null);
2149                        }
2150                        dr.mShowing[i] = null;
2151                    }
2152                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2153                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2154                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2155                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2156                }
2157            }
2158        } else {
2159            if (dr == null) {
2160                mDrawables = dr = new Drawables(getContext());
2161            }
2162
2163            mDrawables.mOverride = false;
2164
2165            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2166                dr.mShowing[Drawables.LEFT].setCallback(null);
2167            }
2168            dr.mShowing[Drawables.LEFT] = left;
2169
2170            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2171                dr.mShowing[Drawables.TOP].setCallback(null);
2172            }
2173            dr.mShowing[Drawables.TOP] = top;
2174
2175            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2176                dr.mShowing[Drawables.RIGHT].setCallback(null);
2177            }
2178            dr.mShowing[Drawables.RIGHT] = right;
2179
2180            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2181                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2182            }
2183            dr.mShowing[Drawables.BOTTOM] = bottom;
2184
2185            final Rect compoundRect = dr.mCompoundRect;
2186            int[] state;
2187
2188            state = getDrawableState();
2189
2190            if (left != null) {
2191                left.setState(state);
2192                left.copyBounds(compoundRect);
2193                left.setCallback(this);
2194                dr.mDrawableSizeLeft = compoundRect.width();
2195                dr.mDrawableHeightLeft = compoundRect.height();
2196            } else {
2197                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2198            }
2199
2200            if (right != null) {
2201                right.setState(state);
2202                right.copyBounds(compoundRect);
2203                right.setCallback(this);
2204                dr.mDrawableSizeRight = compoundRect.width();
2205                dr.mDrawableHeightRight = compoundRect.height();
2206            } else {
2207                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2208            }
2209
2210            if (top != null) {
2211                top.setState(state);
2212                top.copyBounds(compoundRect);
2213                top.setCallback(this);
2214                dr.mDrawableSizeTop = compoundRect.height();
2215                dr.mDrawableWidthTop = compoundRect.width();
2216            } else {
2217                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2218            }
2219
2220            if (bottom != null) {
2221                bottom.setState(state);
2222                bottom.copyBounds(compoundRect);
2223                bottom.setCallback(this);
2224                dr.mDrawableSizeBottom = compoundRect.height();
2225                dr.mDrawableWidthBottom = compoundRect.width();
2226            } else {
2227                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2228            }
2229        }
2230
2231        // Save initial left/right drawables
2232        if (dr != null) {
2233            dr.mDrawableLeftInitial = left;
2234            dr.mDrawableRightInitial = right;
2235        }
2236
2237        resetResolvedDrawables();
2238        resolveDrawables();
2239        applyCompoundDrawableTint();
2240        invalidate();
2241        requestLayout();
2242    }
2243
2244    /**
2245     * Sets the Drawables (if any) to appear to the left of, above, to the
2246     * right of, and below the text. Use 0 if you do not want a Drawable there.
2247     * The Drawables' bounds will be set to their intrinsic bounds.
2248     * <p>
2249     * Calling this method will overwrite any Drawables previously set using
2250     * {@link #setCompoundDrawablesRelative} or related methods.
2251     *
2252     * @param left Resource identifier of the left Drawable.
2253     * @param top Resource identifier of the top Drawable.
2254     * @param right Resource identifier of the right Drawable.
2255     * @param bottom Resource identifier of the bottom Drawable.
2256     *
2257     * @attr ref android.R.styleable#TextView_drawableLeft
2258     * @attr ref android.R.styleable#TextView_drawableTop
2259     * @attr ref android.R.styleable#TextView_drawableRight
2260     * @attr ref android.R.styleable#TextView_drawableBottom
2261     */
2262    @android.view.RemotableViewMethod
2263    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2264            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2265        final Context context = getContext();
2266        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2267                top != 0 ? context.getDrawable(top) : null,
2268                right != 0 ? context.getDrawable(right) : null,
2269                bottom != 0 ? context.getDrawable(bottom) : null);
2270    }
2271
2272    /**
2273     * Sets the Drawables (if any) to appear to the left of, above, to the
2274     * right of, and below the text. Use {@code null} if you do not want a
2275     * Drawable there. The Drawables' bounds will be set to their intrinsic
2276     * bounds.
2277     * <p>
2278     * Calling this method will overwrite any Drawables previously set using
2279     * {@link #setCompoundDrawablesRelative} or related methods.
2280     *
2281     * @attr ref android.R.styleable#TextView_drawableLeft
2282     * @attr ref android.R.styleable#TextView_drawableTop
2283     * @attr ref android.R.styleable#TextView_drawableRight
2284     * @attr ref android.R.styleable#TextView_drawableBottom
2285     */
2286    @android.view.RemotableViewMethod
2287    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2288            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2289
2290        if (left != null) {
2291            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2292        }
2293        if (right != null) {
2294            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2295        }
2296        if (top != null) {
2297            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2298        }
2299        if (bottom != null) {
2300            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2301        }
2302        setCompoundDrawables(left, top, right, bottom);
2303    }
2304
2305    /**
2306     * Sets the Drawables (if any) to appear to the start of, above, to the end
2307     * of, and below the text. Use {@code null} if you do not want a Drawable
2308     * there. The Drawables must already have had {@link Drawable#setBounds}
2309     * called.
2310     * <p>
2311     * Calling this method will overwrite any Drawables previously set using
2312     * {@link #setCompoundDrawables} or related methods.
2313     *
2314     * @attr ref android.R.styleable#TextView_drawableStart
2315     * @attr ref android.R.styleable#TextView_drawableTop
2316     * @attr ref android.R.styleable#TextView_drawableEnd
2317     * @attr ref android.R.styleable#TextView_drawableBottom
2318     */
2319    @android.view.RemotableViewMethod
2320    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2321            @Nullable Drawable end, @Nullable Drawable bottom) {
2322        Drawables dr = mDrawables;
2323
2324        // We're switching to relative, discard absolute.
2325        if (dr != null) {
2326            if (dr.mShowing[Drawables.LEFT] != null) {
2327                dr.mShowing[Drawables.LEFT].setCallback(null);
2328            }
2329            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2330            if (dr.mShowing[Drawables.RIGHT] != null) {
2331                dr.mShowing[Drawables.RIGHT].setCallback(null);
2332            }
2333            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2334            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2335            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2336        }
2337
2338        final boolean drawables = start != null || top != null
2339                || end != null || bottom != null;
2340
2341        if (!drawables) {
2342            // Clearing drawables...  can we free the data structure?
2343            if (dr != null) {
2344                if (dr.mDrawablePadding == 0) {
2345                    mDrawables = null;
2346                } else {
2347                    // We need to retain the last set padding, so just clear
2348                    // out all of the fields in the existing structure.
2349                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2350                    dr.mDrawableStart = null;
2351                    if (dr.mShowing[Drawables.TOP] != null) {
2352                        dr.mShowing[Drawables.TOP].setCallback(null);
2353                    }
2354                    dr.mShowing[Drawables.TOP] = null;
2355                    if (dr.mDrawableEnd != null) {
2356                        dr.mDrawableEnd.setCallback(null);
2357                    }
2358                    dr.mDrawableEnd = null;
2359                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2360                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2361                    }
2362                    dr.mShowing[Drawables.BOTTOM] = null;
2363                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2364                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2365                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2366                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2367                }
2368            }
2369        } else {
2370            if (dr == null) {
2371                mDrawables = dr = new Drawables(getContext());
2372            }
2373
2374            mDrawables.mOverride = true;
2375
2376            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2377                dr.mDrawableStart.setCallback(null);
2378            }
2379            dr.mDrawableStart = start;
2380
2381            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2382                dr.mShowing[Drawables.TOP].setCallback(null);
2383            }
2384            dr.mShowing[Drawables.TOP] = top;
2385
2386            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2387                dr.mDrawableEnd.setCallback(null);
2388            }
2389            dr.mDrawableEnd = end;
2390
2391            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2392                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2393            }
2394            dr.mShowing[Drawables.BOTTOM] = bottom;
2395
2396            final Rect compoundRect = dr.mCompoundRect;
2397            int[] state;
2398
2399            state = getDrawableState();
2400
2401            if (start != null) {
2402                start.setState(state);
2403                start.copyBounds(compoundRect);
2404                start.setCallback(this);
2405                dr.mDrawableSizeStart = compoundRect.width();
2406                dr.mDrawableHeightStart = compoundRect.height();
2407            } else {
2408                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2409            }
2410
2411            if (end != null) {
2412                end.setState(state);
2413                end.copyBounds(compoundRect);
2414                end.setCallback(this);
2415                dr.mDrawableSizeEnd = compoundRect.width();
2416                dr.mDrawableHeightEnd = compoundRect.height();
2417            } else {
2418                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2419            }
2420
2421            if (top != null) {
2422                top.setState(state);
2423                top.copyBounds(compoundRect);
2424                top.setCallback(this);
2425                dr.mDrawableSizeTop = compoundRect.height();
2426                dr.mDrawableWidthTop = compoundRect.width();
2427            } else {
2428                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2429            }
2430
2431            if (bottom != null) {
2432                bottom.setState(state);
2433                bottom.copyBounds(compoundRect);
2434                bottom.setCallback(this);
2435                dr.mDrawableSizeBottom = compoundRect.height();
2436                dr.mDrawableWidthBottom = compoundRect.width();
2437            } else {
2438                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2439            }
2440        }
2441
2442        resetResolvedDrawables();
2443        resolveDrawables();
2444        invalidate();
2445        requestLayout();
2446    }
2447
2448    /**
2449     * Sets the Drawables (if any) to appear to the start of, above, to the end
2450     * of, and below the text. Use 0 if you do not want a Drawable there. The
2451     * Drawables' bounds will be set to their intrinsic bounds.
2452     * <p>
2453     * Calling this method will overwrite any Drawables previously set using
2454     * {@link #setCompoundDrawables} or related methods.
2455     *
2456     * @param start Resource identifier of the start Drawable.
2457     * @param top Resource identifier of the top Drawable.
2458     * @param end Resource identifier of the end Drawable.
2459     * @param bottom Resource identifier of the bottom Drawable.
2460     *
2461     * @attr ref android.R.styleable#TextView_drawableStart
2462     * @attr ref android.R.styleable#TextView_drawableTop
2463     * @attr ref android.R.styleable#TextView_drawableEnd
2464     * @attr ref android.R.styleable#TextView_drawableBottom
2465     */
2466    @android.view.RemotableViewMethod
2467    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2468            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2469        final Context context = getContext();
2470        setCompoundDrawablesRelativeWithIntrinsicBounds(
2471                start != 0 ? context.getDrawable(start) : null,
2472                top != 0 ? context.getDrawable(top) : null,
2473                end != 0 ? context.getDrawable(end) : null,
2474                bottom != 0 ? context.getDrawable(bottom) : null);
2475    }
2476
2477    /**
2478     * Sets the Drawables (if any) to appear to the start of, above, to the end
2479     * of, and below the text. Use {@code null} if you do not want a Drawable
2480     * there. The Drawables' bounds will be set to their intrinsic bounds.
2481     * <p>
2482     * Calling this method will overwrite any Drawables previously set using
2483     * {@link #setCompoundDrawables} or related methods.
2484     *
2485     * @attr ref android.R.styleable#TextView_drawableStart
2486     * @attr ref android.R.styleable#TextView_drawableTop
2487     * @attr ref android.R.styleable#TextView_drawableEnd
2488     * @attr ref android.R.styleable#TextView_drawableBottom
2489     */
2490    @android.view.RemotableViewMethod
2491    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2492            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2493
2494        if (start != null) {
2495            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2496        }
2497        if (end != null) {
2498            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2499        }
2500        if (top != null) {
2501            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2502        }
2503        if (bottom != null) {
2504            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2505        }
2506        setCompoundDrawablesRelative(start, top, end, bottom);
2507    }
2508
2509    /**
2510     * Returns drawables for the left, top, right, and bottom borders.
2511     *
2512     * @attr ref android.R.styleable#TextView_drawableLeft
2513     * @attr ref android.R.styleable#TextView_drawableTop
2514     * @attr ref android.R.styleable#TextView_drawableRight
2515     * @attr ref android.R.styleable#TextView_drawableBottom
2516     */
2517    @NonNull
2518    public Drawable[] getCompoundDrawables() {
2519        final Drawables dr = mDrawables;
2520        if (dr != null) {
2521            return dr.mShowing.clone();
2522        } else {
2523            return new Drawable[] { null, null, null, null };
2524        }
2525    }
2526
2527    /**
2528     * Returns drawables for the start, top, end, and bottom borders.
2529     *
2530     * @attr ref android.R.styleable#TextView_drawableStart
2531     * @attr ref android.R.styleable#TextView_drawableTop
2532     * @attr ref android.R.styleable#TextView_drawableEnd
2533     * @attr ref android.R.styleable#TextView_drawableBottom
2534     */
2535    @NonNull
2536    public Drawable[] getCompoundDrawablesRelative() {
2537        final Drawables dr = mDrawables;
2538        if (dr != null) {
2539            return new Drawable[] {
2540                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2541                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2542            };
2543        } else {
2544            return new Drawable[] { null, null, null, null };
2545        }
2546    }
2547
2548    /**
2549     * Sets the size of the padding between the compound drawables and
2550     * the text.
2551     *
2552     * @attr ref android.R.styleable#TextView_drawablePadding
2553     */
2554    @android.view.RemotableViewMethod
2555    public void setCompoundDrawablePadding(int pad) {
2556        Drawables dr = mDrawables;
2557        if (pad == 0) {
2558            if (dr != null) {
2559                dr.mDrawablePadding = pad;
2560            }
2561        } else {
2562            if (dr == null) {
2563                mDrawables = dr = new Drawables(getContext());
2564            }
2565            dr.mDrawablePadding = pad;
2566        }
2567
2568        invalidate();
2569        requestLayout();
2570    }
2571
2572    /**
2573     * Returns the padding between the compound drawables and the text.
2574     *
2575     * @attr ref android.R.styleable#TextView_drawablePadding
2576     */
2577    public int getCompoundDrawablePadding() {
2578        final Drawables dr = mDrawables;
2579        return dr != null ? dr.mDrawablePadding : 0;
2580    }
2581
2582    /**
2583     * Applies a tint to the compound drawables. Does not modify the
2584     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2585     * <p>
2586     * Subsequent calls to
2587     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2588     * and related methods will automatically mutate the drawables and apply
2589     * the specified tint and tint mode using
2590     * {@link Drawable#setTintList(ColorStateList)}.
2591     *
2592     * @param tint the tint to apply, may be {@code null} to clear tint
2593     *
2594     * @attr ref android.R.styleable#TextView_drawableTint
2595     * @see #getCompoundDrawableTintList()
2596     * @see Drawable#setTintList(ColorStateList)
2597     */
2598    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2599        if (mDrawables == null) {
2600            mDrawables = new Drawables(getContext());
2601        }
2602        mDrawables.mTintList = tint;
2603        mDrawables.mHasTint = true;
2604
2605        applyCompoundDrawableTint();
2606    }
2607
2608    /**
2609     * @return the tint applied to the compound drawables
2610     * @attr ref android.R.styleable#TextView_drawableTint
2611     * @see #setCompoundDrawableTintList(ColorStateList)
2612     */
2613    public ColorStateList getCompoundDrawableTintList() {
2614        return mDrawables != null ? mDrawables.mTintList : null;
2615    }
2616
2617    /**
2618     * Specifies the blending mode used to apply the tint specified by
2619     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2620     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2621     *
2622     * @param tintMode the blending mode used to apply the tint, may be
2623     *                 {@code null} to clear tint
2624     * @attr ref android.R.styleable#TextView_drawableTintMode
2625     * @see #setCompoundDrawableTintList(ColorStateList)
2626     * @see Drawable#setTintMode(PorterDuff.Mode)
2627     */
2628    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2629        if (mDrawables == null) {
2630            mDrawables = new Drawables(getContext());
2631        }
2632        mDrawables.mTintMode = tintMode;
2633        mDrawables.mHasTintMode = true;
2634
2635        applyCompoundDrawableTint();
2636    }
2637
2638    /**
2639     * Returns the blending mode used to apply the tint to the compound
2640     * drawables, if specified.
2641     *
2642     * @return the blending mode used to apply the tint to the compound
2643     *         drawables
2644     * @attr ref android.R.styleable#TextView_drawableTintMode
2645     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2646     */
2647    public PorterDuff.Mode getCompoundDrawableTintMode() {
2648        return mDrawables != null ? mDrawables.mTintMode : null;
2649    }
2650
2651    private void applyCompoundDrawableTint() {
2652        if (mDrawables == null) {
2653            return;
2654        }
2655
2656        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2657            final ColorStateList tintList = mDrawables.mTintList;
2658            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2659            final boolean hasTint = mDrawables.mHasTint;
2660            final boolean hasTintMode = mDrawables.mHasTintMode;
2661            final int[] state = getDrawableState();
2662
2663            for (Drawable dr : mDrawables.mShowing) {
2664                if (dr == null) {
2665                    continue;
2666                }
2667
2668                if (dr == mDrawables.mDrawableError) {
2669                    // From a developer's perspective, the error drawable isn't
2670                    // a compound drawable. Don't apply the generic compound
2671                    // drawable tint to it.
2672                    continue;
2673                }
2674
2675                dr.mutate();
2676
2677                if (hasTint) {
2678                    dr.setTintList(tintList);
2679                }
2680
2681                if (hasTintMode) {
2682                    dr.setTintMode(tintMode);
2683                }
2684
2685                // The drawable (or one of its children) may not have been
2686                // stateful before applying the tint, so let's try again.
2687                if (dr.isStateful()) {
2688                    dr.setState(state);
2689                }
2690            }
2691        }
2692    }
2693
2694    @Override
2695    public void setPadding(int left, int top, int right, int bottom) {
2696        if (left != mPaddingLeft ||
2697            right != mPaddingRight ||
2698            top != mPaddingTop ||
2699            bottom != mPaddingBottom) {
2700            nullLayouts();
2701        }
2702
2703        // the super call will requestLayout()
2704        super.setPadding(left, top, right, bottom);
2705        invalidate();
2706    }
2707
2708    @Override
2709    public void setPaddingRelative(int start, int top, int end, int bottom) {
2710        if (start != getPaddingStart() ||
2711            end != getPaddingEnd() ||
2712            top != mPaddingTop ||
2713            bottom != mPaddingBottom) {
2714            nullLayouts();
2715        }
2716
2717        // the super call will requestLayout()
2718        super.setPaddingRelative(start, top, end, bottom);
2719        invalidate();
2720    }
2721
2722    /**
2723     * Gets the autolink mask of the text.  See {@link
2724     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2725     * possible values.
2726     *
2727     * @attr ref android.R.styleable#TextView_autoLink
2728     */
2729    public final int getAutoLinkMask() {
2730        return mAutoLinkMask;
2731    }
2732
2733    /**
2734     * Sets the text appearance from the specified style resource.
2735     * <p>
2736     * Use a framework-defined {@code TextAppearance} style like
2737     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2738     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2739     * set of attributes that can be used in a custom style.
2740     *
2741     * @param resId the resource identifier of the style to apply
2742     * @attr ref android.R.styleable#TextView_textAppearance
2743     */
2744    @SuppressWarnings("deprecation")
2745    public void setTextAppearance(@StyleRes int resId) {
2746        setTextAppearance(mContext, resId);
2747    }
2748
2749    /**
2750     * Sets the text color, size, style, hint color, and highlight color
2751     * from the specified TextAppearance resource.
2752     *
2753     * @deprecated Use {@link #setTextAppearance(int)} instead.
2754     */
2755    @Deprecated
2756    public void setTextAppearance(Context context, @StyleRes int resId) {
2757        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2758
2759        final int textColorHighlight = ta.getColor(
2760                R.styleable.TextAppearance_textColorHighlight, 0);
2761        if (textColorHighlight != 0) {
2762            setHighlightColor(textColorHighlight);
2763        }
2764
2765        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2766        if (textColor != null) {
2767            setTextColor(textColor);
2768        }
2769
2770        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2771        if (textSize != 0) {
2772            setRawTextSize(textSize);
2773        }
2774
2775        final ColorStateList textColorHint = ta.getColorStateList(
2776                R.styleable.TextAppearance_textColorHint);
2777        if (textColorHint != null) {
2778            setHintTextColor(textColorHint);
2779        }
2780
2781        final ColorStateList textColorLink = ta.getColorStateList(
2782                R.styleable.TextAppearance_textColorLink);
2783        if (textColorLink != null) {
2784            setLinkTextColor(textColorLink);
2785        }
2786
2787        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2788        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2789        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2790        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2791
2792        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2793        if (shadowColor != 0) {
2794            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2795            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2796            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2797            setShadowLayer(r, dx, dy, shadowColor);
2798        }
2799
2800        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2801            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2802        }
2803
2804        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2805            setElegantTextHeight(ta.getBoolean(
2806                R.styleable.TextAppearance_elegantTextHeight, false));
2807        }
2808
2809        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2810            setLetterSpacing(ta.getFloat(
2811                R.styleable.TextAppearance_letterSpacing, 0));
2812        }
2813
2814        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2815            setFontFeatureSettings(ta.getString(
2816                R.styleable.TextAppearance_fontFeatureSettings));
2817        }
2818
2819        ta.recycle();
2820    }
2821
2822    /**
2823     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2824     * the first member of {@link #getTextLocales()}.
2825     * @return the default primary {@link Locale} of the text in this TextView.
2826     */
2827    @NonNull
2828    public Locale getTextLocale() {
2829        return mTextPaint.getTextLocale();
2830    }
2831
2832    /**
2833     * Get the default {@link LocaleList} of the text in this TextView.
2834     * @return the default {@link LocaleList} of the text in this TextView.
2835     */
2836    @NonNull @Size(min=1)
2837    public LocaleList getTextLocales() {
2838        return mTextPaint.getTextLocales();
2839    }
2840
2841    /**
2842     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2843     * containing just the given value.
2844     *
2845     * @param locale the {@link Locale} for drawing text, must not be null.
2846     *
2847     * @see #setTextLocales
2848     */
2849    public void setTextLocale(@NonNull Locale locale) {
2850        mLocalesChanged = true;
2851        mTextPaint.setTextLocale(locale);
2852    }
2853
2854    /**
2855     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2856     *
2857     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2858     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2859     * other aspects of text display, including line breaking.
2860     *
2861     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2862     *
2863     * @see Paint#setTextLocales
2864     */
2865    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2866        mLocalesChanged = true;
2867        mTextPaint.setTextLocales(locales);
2868    }
2869
2870    @Override
2871    protected void onConfigurationChanged(Configuration newConfig) {
2872        super.onConfigurationChanged(newConfig);
2873        if (!mLocalesChanged) {
2874            mTextPaint.setTextLocales(LocaleList.getDefault());
2875        }
2876    }
2877
2878    /**
2879     * @return the size (in pixels) of the default text size in this TextView.
2880     */
2881    @ViewDebug.ExportedProperty(category = "text")
2882    public float getTextSize() {
2883        return mTextPaint.getTextSize();
2884    }
2885
2886    /**
2887     * @return the size (in scaled pixels) of thee default text size in this TextView.
2888     * @hide
2889     */
2890    @ViewDebug.ExportedProperty(category = "text")
2891    public float getScaledTextSize() {
2892        return mTextPaint.getTextSize() / mTextPaint.density;
2893    }
2894
2895    /** @hide */
2896    @ViewDebug.ExportedProperty(category = "text", mapping = {
2897            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2898            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2899            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2900            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2901    })
2902    public int getTypefaceStyle() {
2903        Typeface typeface = mTextPaint.getTypeface();
2904        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2905    }
2906
2907    /**
2908     * Set the default text size to the given value, interpreted as "scaled
2909     * pixel" units.  This size is adjusted based on the current density and
2910     * user font size preference.
2911     *
2912     * @param size The scaled pixel size.
2913     *
2914     * @attr ref android.R.styleable#TextView_textSize
2915     */
2916    @android.view.RemotableViewMethod
2917    public void setTextSize(float size) {
2918        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2919    }
2920
2921    /**
2922     * Set the default text size to a given unit and value.  See {@link
2923     * TypedValue} for the possible dimension units.
2924     *
2925     * @param unit The desired dimension unit.
2926     * @param size The desired size in the given units.
2927     *
2928     * @attr ref android.R.styleable#TextView_textSize
2929     */
2930    public void setTextSize(int unit, float size) {
2931        Context c = getContext();
2932        Resources r;
2933
2934        if (c == null)
2935            r = Resources.getSystem();
2936        else
2937            r = c.getResources();
2938
2939        setRawTextSize(TypedValue.applyDimension(
2940                unit, size, r.getDisplayMetrics()));
2941    }
2942
2943    private void setRawTextSize(float size) {
2944        if (size != mTextPaint.getTextSize()) {
2945            mTextPaint.setTextSize(size);
2946
2947            if (mLayout != null) {
2948                nullLayouts();
2949                requestLayout();
2950                invalidate();
2951            }
2952        }
2953    }
2954
2955    /**
2956     * @return the extent by which text is currently being stretched
2957     * horizontally.  This will usually be 1.
2958     */
2959    public float getTextScaleX() {
2960        return mTextPaint.getTextScaleX();
2961    }
2962
2963    /**
2964     * Sets the extent by which text should be stretched horizontally.
2965     *
2966     * @attr ref android.R.styleable#TextView_textScaleX
2967     */
2968    @android.view.RemotableViewMethod
2969    public void setTextScaleX(float size) {
2970        if (size != mTextPaint.getTextScaleX()) {
2971            mUserSetTextScaleX = true;
2972            mTextPaint.setTextScaleX(size);
2973
2974            if (mLayout != null) {
2975                nullLayouts();
2976                requestLayout();
2977                invalidate();
2978            }
2979        }
2980    }
2981
2982    /**
2983     * Sets the typeface and style in which the text should be displayed.
2984     * Note that not all Typeface families actually have bold and italic
2985     * variants, so you may need to use
2986     * {@link #setTypeface(Typeface, int)} to get the appearance
2987     * that you actually want.
2988     *
2989     * @see #getTypeface()
2990     *
2991     * @attr ref android.R.styleable#TextView_fontFamily
2992     * @attr ref android.R.styleable#TextView_typeface
2993     * @attr ref android.R.styleable#TextView_textStyle
2994     */
2995    public void setTypeface(Typeface tf) {
2996        if (mTextPaint.getTypeface() != tf) {
2997            mTextPaint.setTypeface(tf);
2998
2999            if (mLayout != null) {
3000                nullLayouts();
3001                requestLayout();
3002                invalidate();
3003            }
3004        }
3005    }
3006
3007    /**
3008     * @return the current typeface and style in which the text is being
3009     * displayed.
3010     *
3011     * @see #setTypeface(Typeface)
3012     *
3013     * @attr ref android.R.styleable#TextView_fontFamily
3014     * @attr ref android.R.styleable#TextView_typeface
3015     * @attr ref android.R.styleable#TextView_textStyle
3016     */
3017    public Typeface getTypeface() {
3018        return mTextPaint.getTypeface();
3019    }
3020
3021    /**
3022     * Set the TextView's elegant height metrics flag. This setting selects font
3023     * variants that have not been compacted to fit Latin-based vertical
3024     * metrics, and also increases top and bottom bounds to provide more space.
3025     *
3026     * @param elegant set the paint's elegant metrics flag.
3027     *
3028     * @attr ref android.R.styleable#TextView_elegantTextHeight
3029     */
3030    public void setElegantTextHeight(boolean elegant) {
3031        mTextPaint.setElegantTextHeight(elegant);
3032    }
3033
3034    /**
3035     * @return the extent by which text is currently being letter-spaced.
3036     * This will normally be 0.
3037     *
3038     * @see #setLetterSpacing(float)
3039     * @see Paint#setLetterSpacing
3040     */
3041    public float getLetterSpacing() {
3042        return mTextPaint.getLetterSpacing();
3043    }
3044
3045    /**
3046     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3047     * for slight expansion will be around 0.05.  Negative values tighten text.
3048     *
3049     * @see #getLetterSpacing()
3050     * @see Paint#getLetterSpacing
3051     *
3052     * @attr ref android.R.styleable#TextView_letterSpacing
3053     */
3054    @android.view.RemotableViewMethod
3055    public void setLetterSpacing(float letterSpacing) {
3056        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3057            mTextPaint.setLetterSpacing(letterSpacing);
3058
3059            if (mLayout != null) {
3060                nullLayouts();
3061                requestLayout();
3062                invalidate();
3063            }
3064        }
3065    }
3066
3067    /**
3068     * @return the currently set font feature settings.  Default is null.
3069     *
3070     * @see #setFontFeatureSettings(String)
3071     * @see Paint#setFontFeatureSettings
3072     */
3073    @Nullable
3074    public String getFontFeatureSettings() {
3075        return mTextPaint.getFontFeatureSettings();
3076    }
3077
3078    /**
3079     * Sets the break strategy for breaking paragraphs into lines. The default value for
3080     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3081     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3082     * text "dancing" when being edited.
3083     *
3084     * @attr ref android.R.styleable#TextView_breakStrategy
3085     * @see #getBreakStrategy()
3086     */
3087    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3088        mBreakStrategy = breakStrategy;
3089        if (mLayout != null) {
3090            nullLayouts();
3091            requestLayout();
3092            invalidate();
3093        }
3094    }
3095
3096    /**
3097     * @return the currently set break strategy.
3098     *
3099     * @attr ref android.R.styleable#TextView_breakStrategy
3100     * @see #setBreakStrategy(int)
3101     */
3102    @Layout.BreakStrategy
3103    public int getBreakStrategy() {
3104        return mBreakStrategy;
3105    }
3106
3107    /**
3108     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3109     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3110     *
3111     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3112     * @see #getHyphenationFrequency()
3113     */
3114    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3115        mHyphenationFrequency = hyphenationFrequency;
3116        if (mLayout != null) {
3117            nullLayouts();
3118            requestLayout();
3119            invalidate();
3120        }
3121    }
3122
3123    /**
3124     * @return the currently set hyphenation frequency.
3125     *
3126     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3127     * @see #setHyphenationFrequency(int)
3128     */
3129    @Layout.HyphenationFrequency
3130    public int getHyphenationFrequency() {
3131        return mHyphenationFrequency;
3132    }
3133
3134    /**
3135     * Sets font feature settings.  The format is the same as the CSS
3136     * font-feature-settings attribute:
3137     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3138     *
3139     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3140     * @see #getFontFeatureSettings()
3141     * @see Paint#getFontFeatureSettings
3142     *
3143     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3144     */
3145    @android.view.RemotableViewMethod
3146    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3147        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3148            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3149
3150            if (mLayout != null) {
3151                nullLayouts();
3152                requestLayout();
3153                invalidate();
3154            }
3155        }
3156    }
3157
3158
3159    /**
3160     * Sets the text color for all the states (normal, selected,
3161     * focused) to be this color.
3162     *
3163     * @see #setTextColor(ColorStateList)
3164     * @see #getTextColors()
3165     *
3166     * @attr ref android.R.styleable#TextView_textColor
3167     */
3168    @android.view.RemotableViewMethod
3169    public void setTextColor(@ColorInt int color) {
3170        mTextColor = ColorStateList.valueOf(color);
3171        updateTextColors();
3172    }
3173
3174    /**
3175     * Sets the text color.
3176     *
3177     * @see #setTextColor(int)
3178     * @see #getTextColors()
3179     * @see #setHintTextColor(ColorStateList)
3180     * @see #setLinkTextColor(ColorStateList)
3181     *
3182     * @attr ref android.R.styleable#TextView_textColor
3183     */
3184    public void setTextColor(ColorStateList colors) {
3185        if (colors == null) {
3186            throw new NullPointerException();
3187        }
3188
3189        mTextColor = colors;
3190        updateTextColors();
3191    }
3192
3193    /**
3194     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3195     *
3196     * @see #setTextColor(ColorStateList)
3197     * @see #setTextColor(int)
3198     *
3199     * @attr ref android.R.styleable#TextView_textColor
3200     */
3201    public final ColorStateList getTextColors() {
3202        return mTextColor;
3203    }
3204
3205    /**
3206     * <p>Return the current color selected for normal text.</p>
3207     *
3208     * @return Returns the current text color.
3209     */
3210    @ColorInt
3211    public final int getCurrentTextColor() {
3212        return mCurTextColor;
3213    }
3214
3215    /**
3216     * Sets the color used to display the selection highlight.
3217     *
3218     * @attr ref android.R.styleable#TextView_textColorHighlight
3219     */
3220    @android.view.RemotableViewMethod
3221    public void setHighlightColor(@ColorInt int color) {
3222        if (mHighlightColor != color) {
3223            mHighlightColor = color;
3224            invalidate();
3225        }
3226    }
3227
3228    /**
3229     * @return the color used to display the selection highlight
3230     *
3231     * @see #setHighlightColor(int)
3232     *
3233     * @attr ref android.R.styleable#TextView_textColorHighlight
3234     */
3235    @ColorInt
3236    public int getHighlightColor() {
3237        return mHighlightColor;
3238    }
3239
3240    /**
3241     * Sets whether the soft input method will be made visible when this
3242     * TextView gets focused. The default is true.
3243     */
3244    @android.view.RemotableViewMethod
3245    public final void setShowSoftInputOnFocus(boolean show) {
3246        createEditorIfNeeded();
3247        mEditor.mShowSoftInputOnFocus = show;
3248    }
3249
3250    /**
3251     * Returns whether the soft input method will be made visible when this
3252     * TextView gets focused. The default is true.
3253     */
3254    public final boolean getShowSoftInputOnFocus() {
3255        // When there is no Editor, return default true value
3256        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3257    }
3258
3259    /**
3260     * Gives the text a shadow of the specified blur radius and color, the specified
3261     * distance from its drawn position.
3262     * <p>
3263     * The text shadow produced does not interact with the properties on view
3264     * that are responsible for real time shadows,
3265     * {@link View#getElevation() elevation} and
3266     * {@link View#getTranslationZ() translationZ}.
3267     *
3268     * @see Paint#setShadowLayer(float, float, float, int)
3269     *
3270     * @attr ref android.R.styleable#TextView_shadowColor
3271     * @attr ref android.R.styleable#TextView_shadowDx
3272     * @attr ref android.R.styleable#TextView_shadowDy
3273     * @attr ref android.R.styleable#TextView_shadowRadius
3274     */
3275    public void setShadowLayer(float radius, float dx, float dy, int color) {
3276        mTextPaint.setShadowLayer(radius, dx, dy, color);
3277
3278        mShadowRadius = radius;
3279        mShadowDx = dx;
3280        mShadowDy = dy;
3281        mShadowColor = color;
3282
3283        // Will change text clip region
3284        if (mEditor != null) mEditor.invalidateTextDisplayList();
3285        invalidate();
3286    }
3287
3288    /**
3289     * Gets the radius of the shadow layer.
3290     *
3291     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3292     *
3293     * @see #setShadowLayer(float, float, float, int)
3294     *
3295     * @attr ref android.R.styleable#TextView_shadowRadius
3296     */
3297    public float getShadowRadius() {
3298        return mShadowRadius;
3299    }
3300
3301    /**
3302     * @return the horizontal offset of the shadow layer
3303     *
3304     * @see #setShadowLayer(float, float, float, int)
3305     *
3306     * @attr ref android.R.styleable#TextView_shadowDx
3307     */
3308    public float getShadowDx() {
3309        return mShadowDx;
3310    }
3311
3312    /**
3313     * @return the vertical offset of the shadow layer
3314     *
3315     * @see #setShadowLayer(float, float, float, int)
3316     *
3317     * @attr ref android.R.styleable#TextView_shadowDy
3318     */
3319    public float getShadowDy() {
3320        return mShadowDy;
3321    }
3322
3323    /**
3324     * @return the color of the shadow layer
3325     *
3326     * @see #setShadowLayer(float, float, float, int)
3327     *
3328     * @attr ref android.R.styleable#TextView_shadowColor
3329     */
3330    @ColorInt
3331    public int getShadowColor() {
3332        return mShadowColor;
3333    }
3334
3335    /**
3336     * @return the base paint used for the text.  Please use this only to
3337     * consult the Paint's properties and not to change them.
3338     */
3339    public TextPaint getPaint() {
3340        return mTextPaint;
3341    }
3342
3343    /**
3344     * Sets the autolink mask of the text.  See {@link
3345     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3346     * possible values.
3347     *
3348     * @attr ref android.R.styleable#TextView_autoLink
3349     */
3350    @android.view.RemotableViewMethod
3351    public final void setAutoLinkMask(int mask) {
3352        mAutoLinkMask = mask;
3353    }
3354
3355    /**
3356     * Sets whether the movement method will automatically be set to
3357     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3358     * set to nonzero and links are detected in {@link #setText}.
3359     * The default is true.
3360     *
3361     * @attr ref android.R.styleable#TextView_linksClickable
3362     */
3363    @android.view.RemotableViewMethod
3364    public final void setLinksClickable(boolean whether) {
3365        mLinksClickable = whether;
3366    }
3367
3368    /**
3369     * Returns whether the movement method will automatically be set to
3370     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3371     * set to nonzero and links are detected in {@link #setText}.
3372     * The default is true.
3373     *
3374     * @attr ref android.R.styleable#TextView_linksClickable
3375     */
3376    public final boolean getLinksClickable() {
3377        return mLinksClickable;
3378    }
3379
3380    /**
3381     * Returns the list of URLSpans attached to the text
3382     * (by {@link Linkify} or otherwise) if any.  You can call
3383     * {@link URLSpan#getURL} on them to find where they link to
3384     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3385     * to find the region of the text they are attached to.
3386     */
3387    public URLSpan[] getUrls() {
3388        if (mText instanceof Spanned) {
3389            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3390        } else {
3391            return new URLSpan[0];
3392        }
3393    }
3394
3395    /**
3396     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3397     * TextView.
3398     *
3399     * @see #setHintTextColor(ColorStateList)
3400     * @see #getHintTextColors()
3401     * @see #setTextColor(int)
3402     *
3403     * @attr ref android.R.styleable#TextView_textColorHint
3404     */
3405    @android.view.RemotableViewMethod
3406    public final void setHintTextColor(@ColorInt int color) {
3407        mHintTextColor = ColorStateList.valueOf(color);
3408        updateTextColors();
3409    }
3410
3411    /**
3412     * Sets the color of the hint text.
3413     *
3414     * @see #getHintTextColors()
3415     * @see #setHintTextColor(int)
3416     * @see #setTextColor(ColorStateList)
3417     * @see #setLinkTextColor(ColorStateList)
3418     *
3419     * @attr ref android.R.styleable#TextView_textColorHint
3420     */
3421    public final void setHintTextColor(ColorStateList colors) {
3422        mHintTextColor = colors;
3423        updateTextColors();
3424    }
3425
3426    /**
3427     * @return the color of the hint text, for the different states of this TextView.
3428     *
3429     * @see #setHintTextColor(ColorStateList)
3430     * @see #setHintTextColor(int)
3431     * @see #setTextColor(ColorStateList)
3432     * @see #setLinkTextColor(ColorStateList)
3433     *
3434     * @attr ref android.R.styleable#TextView_textColorHint
3435     */
3436    public final ColorStateList getHintTextColors() {
3437        return mHintTextColor;
3438    }
3439
3440    /**
3441     * <p>Return the current color selected to paint the hint text.</p>
3442     *
3443     * @return Returns the current hint text color.
3444     */
3445    @ColorInt
3446    public final int getCurrentHintTextColor() {
3447        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3448    }
3449
3450    /**
3451     * Sets the color of links in the text.
3452     *
3453     * @see #setLinkTextColor(ColorStateList)
3454     * @see #getLinkTextColors()
3455     *
3456     * @attr ref android.R.styleable#TextView_textColorLink
3457     */
3458    @android.view.RemotableViewMethod
3459    public final void setLinkTextColor(@ColorInt int color) {
3460        mLinkTextColor = ColorStateList.valueOf(color);
3461        updateTextColors();
3462    }
3463
3464    /**
3465     * Sets the color of links in the text.
3466     *
3467     * @see #setLinkTextColor(int)
3468     * @see #getLinkTextColors()
3469     * @see #setTextColor(ColorStateList)
3470     * @see #setHintTextColor(ColorStateList)
3471     *
3472     * @attr ref android.R.styleable#TextView_textColorLink
3473     */
3474    public final void setLinkTextColor(ColorStateList colors) {
3475        mLinkTextColor = colors;
3476        updateTextColors();
3477    }
3478
3479    /**
3480     * @return the list of colors used to paint the links in the text, for the different states of
3481     * this TextView
3482     *
3483     * @see #setLinkTextColor(ColorStateList)
3484     * @see #setLinkTextColor(int)
3485     *
3486     * @attr ref android.R.styleable#TextView_textColorLink
3487     */
3488    public final ColorStateList getLinkTextColors() {
3489        return mLinkTextColor;
3490    }
3491
3492    /**
3493     * Sets the horizontal alignment of the text and the
3494     * vertical gravity that will be used when there is extra space
3495     * in the TextView beyond what is required for the text itself.
3496     *
3497     * @see android.view.Gravity
3498     * @attr ref android.R.styleable#TextView_gravity
3499     */
3500    public void setGravity(int gravity) {
3501        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3502            gravity |= Gravity.START;
3503        }
3504        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3505            gravity |= Gravity.TOP;
3506        }
3507
3508        boolean newLayout = false;
3509
3510        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3511            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3512            newLayout = true;
3513        }
3514
3515        if (gravity != mGravity) {
3516            invalidate();
3517        }
3518
3519        mGravity = gravity;
3520
3521        if (mLayout != null && newLayout) {
3522            // XXX this is heavy-handed because no actual content changes.
3523            int want = mLayout.getWidth();
3524            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3525
3526            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3527                          mRight - mLeft - getCompoundPaddingLeft() -
3528                          getCompoundPaddingRight(), true);
3529        }
3530    }
3531
3532    /**
3533     * Returns the horizontal and vertical alignment of this TextView.
3534     *
3535     * @see android.view.Gravity
3536     * @attr ref android.R.styleable#TextView_gravity
3537     */
3538    public int getGravity() {
3539        return mGravity;
3540    }
3541
3542    /**
3543     * @return the flags on the Paint being used to display the text.
3544     * @see Paint#getFlags
3545     */
3546    public int getPaintFlags() {
3547        return mTextPaint.getFlags();
3548    }
3549
3550    /**
3551     * Sets flags on the Paint being used to display the text and
3552     * reflows the text if they are different from the old flags.
3553     * @see Paint#setFlags
3554     */
3555    @android.view.RemotableViewMethod
3556    public void setPaintFlags(int flags) {
3557        if (mTextPaint.getFlags() != flags) {
3558            mTextPaint.setFlags(flags);
3559
3560            if (mLayout != null) {
3561                nullLayouts();
3562                requestLayout();
3563                invalidate();
3564            }
3565        }
3566    }
3567
3568    /**
3569     * Sets whether the text should be allowed to be wider than the
3570     * View is.  If false, it will be wrapped to the width of the View.
3571     *
3572     * @attr ref android.R.styleable#TextView_scrollHorizontally
3573     */
3574    public void setHorizontallyScrolling(boolean whether) {
3575        if (mHorizontallyScrolling != whether) {
3576            mHorizontallyScrolling = whether;
3577
3578            if (mLayout != null) {
3579                nullLayouts();
3580                requestLayout();
3581                invalidate();
3582            }
3583        }
3584    }
3585
3586    /**
3587     * Returns whether the text is allowed to be wider than the View is.
3588     * If false, the text will be wrapped to the width of the View.
3589     *
3590     * @attr ref android.R.styleable#TextView_scrollHorizontally
3591     * @hide
3592     */
3593    public boolean getHorizontallyScrolling() {
3594        return mHorizontallyScrolling;
3595    }
3596
3597    /**
3598     * Makes the TextView at least this many lines tall.
3599     *
3600     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3601     * set this value to 1.
3602     *
3603     * @see #getMinLines()
3604     *
3605     * @attr ref android.R.styleable#TextView_minLines
3606     */
3607    @android.view.RemotableViewMethod
3608    public void setMinLines(int minlines) {
3609        mMinimum = minlines;
3610        mMinMode = LINES;
3611
3612        requestLayout();
3613        invalidate();
3614    }
3615
3616    /**
3617     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3618     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3619     *
3620     * @see #setMinLines(int)
3621     *
3622     * @attr ref android.R.styleable#TextView_minLines
3623     */
3624    public int getMinLines() {
3625        return mMinMode == LINES ? mMinimum : -1;
3626    }
3627
3628    /**
3629     * Makes the TextView at least this many pixels tall.
3630     *
3631     * Setting this value overrides any other (minimum) number of lines setting.
3632     *
3633     * @attr ref android.R.styleable#TextView_minHeight
3634     */
3635    @android.view.RemotableViewMethod
3636    public void setMinHeight(int minHeight) {
3637        mMinimum = minHeight;
3638        mMinMode = PIXELS;
3639
3640        requestLayout();
3641        invalidate();
3642    }
3643
3644    /**
3645     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3646     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3647     *
3648     * @see #setMinHeight(int)
3649     *
3650     * @attr ref android.R.styleable#TextView_minHeight
3651     */
3652    public int getMinHeight() {
3653        return mMinMode == PIXELS ? mMinimum : -1;
3654    }
3655
3656    /**
3657     * Makes the TextView at most this many lines tall.
3658     *
3659     * Setting this value overrides any other (maximum) height setting.
3660     *
3661     * @attr ref android.R.styleable#TextView_maxLines
3662     */
3663    @android.view.RemotableViewMethod
3664    public void setMaxLines(int maxlines) {
3665        mMaximum = maxlines;
3666        mMaxMode = LINES;
3667
3668        requestLayout();
3669        invalidate();
3670    }
3671
3672    /**
3673     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3674     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3675     *
3676     * @see #setMaxLines(int)
3677     *
3678     * @attr ref android.R.styleable#TextView_maxLines
3679     */
3680    public int getMaxLines() {
3681        return mMaxMode == LINES ? mMaximum : -1;
3682    }
3683
3684    /**
3685     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3686     * {@link #setMaxLines(int)} method.
3687     *
3688     * Setting this value overrides any other (maximum) number of lines setting.
3689     *
3690     * @attr ref android.R.styleable#TextView_maxHeight
3691     */
3692    @android.view.RemotableViewMethod
3693    public void setMaxHeight(int maxHeight) {
3694        mMaximum = maxHeight;
3695        mMaxMode = PIXELS;
3696
3697        requestLayout();
3698        invalidate();
3699    }
3700
3701    /**
3702     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3703     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3704     *
3705     * @see #setMaxHeight(int)
3706     *
3707     * @attr ref android.R.styleable#TextView_maxHeight
3708     */
3709    public int getMaxHeight() {
3710        return mMaxMode == PIXELS ? mMaximum : -1;
3711    }
3712
3713    /**
3714     * Makes the TextView exactly this many lines tall.
3715     *
3716     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3717     * height setting. A single line TextView will set this value to 1.
3718     *
3719     * @attr ref android.R.styleable#TextView_lines
3720     */
3721    @android.view.RemotableViewMethod
3722    public void setLines(int lines) {
3723        mMaximum = mMinimum = lines;
3724        mMaxMode = mMinMode = LINES;
3725
3726        requestLayout();
3727        invalidate();
3728    }
3729
3730    /**
3731     * Makes the TextView exactly this many pixels tall.
3732     * You could do the same thing by specifying this number in the
3733     * LayoutParams.
3734     *
3735     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3736     * height setting.
3737     *
3738     * @attr ref android.R.styleable#TextView_height
3739     */
3740    @android.view.RemotableViewMethod
3741    public void setHeight(int pixels) {
3742        mMaximum = mMinimum = pixels;
3743        mMaxMode = mMinMode = PIXELS;
3744
3745        requestLayout();
3746        invalidate();
3747    }
3748
3749    /**
3750     * Makes the TextView at least this many ems wide
3751     *
3752     * @attr ref android.R.styleable#TextView_minEms
3753     */
3754    @android.view.RemotableViewMethod
3755    public void setMinEms(int minems) {
3756        mMinWidth = minems;
3757        mMinWidthMode = EMS;
3758
3759        requestLayout();
3760        invalidate();
3761    }
3762
3763    /**
3764     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3765     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3766     *
3767     * @see #setMinEms(int)
3768     * @see #setEms(int)
3769     *
3770     * @attr ref android.R.styleable#TextView_minEms
3771     */
3772    public int getMinEms() {
3773        return mMinWidthMode == EMS ? mMinWidth : -1;
3774    }
3775
3776    /**
3777     * Makes the TextView at least this many pixels wide
3778     *
3779     * @attr ref android.R.styleable#TextView_minWidth
3780     */
3781    @android.view.RemotableViewMethod
3782    public void setMinWidth(int minpixels) {
3783        mMinWidth = minpixels;
3784        mMinWidthMode = PIXELS;
3785
3786        requestLayout();
3787        invalidate();
3788    }
3789
3790    /**
3791     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3792     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3793     *
3794     * @see #setMinWidth(int)
3795     * @see #setWidth(int)
3796     *
3797     * @attr ref android.R.styleable#TextView_minWidth
3798     */
3799    public int getMinWidth() {
3800        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3801    }
3802
3803    /**
3804     * Makes the TextView at most this many ems wide
3805     *
3806     * @attr ref android.R.styleable#TextView_maxEms
3807     */
3808    @android.view.RemotableViewMethod
3809    public void setMaxEms(int maxems) {
3810        mMaxWidth = maxems;
3811        mMaxWidthMode = EMS;
3812
3813        requestLayout();
3814        invalidate();
3815    }
3816
3817    /**
3818     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3819     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3820     *
3821     * @see #setMaxEms(int)
3822     * @see #setEms(int)
3823     *
3824     * @attr ref android.R.styleable#TextView_maxEms
3825     */
3826    public int getMaxEms() {
3827        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3828    }
3829
3830    /**
3831     * Makes the TextView at most this many pixels wide
3832     *
3833     * @attr ref android.R.styleable#TextView_maxWidth
3834     */
3835    @android.view.RemotableViewMethod
3836    public void setMaxWidth(int maxpixels) {
3837        mMaxWidth = maxpixels;
3838        mMaxWidthMode = PIXELS;
3839
3840        requestLayout();
3841        invalidate();
3842    }
3843
3844    /**
3845     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3846     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3847     *
3848     * @see #setMaxWidth(int)
3849     * @see #setWidth(int)
3850     *
3851     * @attr ref android.R.styleable#TextView_maxWidth
3852     */
3853    public int getMaxWidth() {
3854        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3855    }
3856
3857    /**
3858     * Makes the TextView exactly this many ems wide
3859     *
3860     * @see #setMaxEms(int)
3861     * @see #setMinEms(int)
3862     * @see #getMinEms()
3863     * @see #getMaxEms()
3864     *
3865     * @attr ref android.R.styleable#TextView_ems
3866     */
3867    @android.view.RemotableViewMethod
3868    public void setEms(int ems) {
3869        mMaxWidth = mMinWidth = ems;
3870        mMaxWidthMode = mMinWidthMode = EMS;
3871
3872        requestLayout();
3873        invalidate();
3874    }
3875
3876    /**
3877     * Makes the TextView exactly this many pixels wide.
3878     * You could do the same thing by specifying this number in the
3879     * LayoutParams.
3880     *
3881     * @see #setMaxWidth(int)
3882     * @see #setMinWidth(int)
3883     * @see #getMinWidth()
3884     * @see #getMaxWidth()
3885     *
3886     * @attr ref android.R.styleable#TextView_width
3887     */
3888    @android.view.RemotableViewMethod
3889    public void setWidth(int pixels) {
3890        mMaxWidth = mMinWidth = pixels;
3891        mMaxWidthMode = mMinWidthMode = PIXELS;
3892
3893        requestLayout();
3894        invalidate();
3895    }
3896
3897    /**
3898     * Sets line spacing for this TextView.  Each line will have its height
3899     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3900     *
3901     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3902     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3903     */
3904    public void setLineSpacing(float add, float mult) {
3905        if (mSpacingAdd != add || mSpacingMult != mult) {
3906            mSpacingAdd = add;
3907            mSpacingMult = mult;
3908
3909            if (mLayout != null) {
3910                nullLayouts();
3911                requestLayout();
3912                invalidate();
3913            }
3914        }
3915    }
3916
3917    /**
3918     * Gets the line spacing multiplier
3919     *
3920     * @return the value by which each line's height is multiplied to get its actual height.
3921     *
3922     * @see #setLineSpacing(float, float)
3923     * @see #getLineSpacingExtra()
3924     *
3925     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3926     */
3927    public float getLineSpacingMultiplier() {
3928        return mSpacingMult;
3929    }
3930
3931    /**
3932     * Gets the line spacing extra space
3933     *
3934     * @return the extra space that is added to the height of each lines of this TextView.
3935     *
3936     * @see #setLineSpacing(float, float)
3937     * @see #getLineSpacingMultiplier()
3938     *
3939     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3940     */
3941    public float getLineSpacingExtra() {
3942        return mSpacingAdd;
3943    }
3944
3945    /**
3946     * Convenience method: Append the specified text to the TextView's
3947     * display buffer, upgrading it to BufferType.EDITABLE if it was
3948     * not already editable.
3949     */
3950    public final void append(CharSequence text) {
3951        append(text, 0, text.length());
3952    }
3953
3954    /**
3955     * Convenience method: Append the specified text slice to the TextView's
3956     * display buffer, upgrading it to BufferType.EDITABLE if it was
3957     * not already editable.
3958     */
3959    public void append(CharSequence text, int start, int end) {
3960        if (!(mText instanceof Editable)) {
3961            setText(mText, BufferType.EDITABLE);
3962        }
3963
3964        ((Editable) mText).append(text, start, end);
3965    }
3966
3967    private void updateTextColors() {
3968        boolean inval = false;
3969        int color = mTextColor.getColorForState(getDrawableState(), 0);
3970        if (color != mCurTextColor) {
3971            mCurTextColor = color;
3972            inval = true;
3973        }
3974        if (mLinkTextColor != null) {
3975            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3976            if (color != mTextPaint.linkColor) {
3977                mTextPaint.linkColor = color;
3978                inval = true;
3979            }
3980        }
3981        if (mHintTextColor != null) {
3982            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3983            if (color != mCurHintTextColor) {
3984                mCurHintTextColor = color;
3985                if (mText.length() == 0) {
3986                    inval = true;
3987                }
3988            }
3989        }
3990        if (inval) {
3991            // Text needs to be redrawn with the new color
3992            if (mEditor != null) mEditor.invalidateTextDisplayList();
3993            invalidate();
3994        }
3995    }
3996
3997    @Override
3998    protected void drawableStateChanged() {
3999        super.drawableStateChanged();
4000
4001        if (mTextColor != null && mTextColor.isStateful()
4002                || (mHintTextColor != null && mHintTextColor.isStateful())
4003                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4004            updateTextColors();
4005        }
4006
4007        if (mDrawables != null) {
4008            final int[] state = getDrawableState();
4009            for (Drawable dr : mDrawables.mShowing) {
4010                if (dr != null && dr.isStateful() && dr.setState(state)) {
4011                    invalidateDrawable(dr);
4012                }
4013            }
4014        }
4015    }
4016
4017    @Override
4018    public void drawableHotspotChanged(float x, float y) {
4019        super.drawableHotspotChanged(x, y);
4020
4021        if (mDrawables != null) {
4022            for (Drawable dr : mDrawables.mShowing) {
4023                if (dr != null) {
4024                    dr.setHotspot(x, y);
4025                }
4026            }
4027        }
4028    }
4029
4030    @Override
4031    public Parcelable onSaveInstanceState() {
4032        Parcelable superState = super.onSaveInstanceState();
4033
4034        // Save state if we are forced to
4035        boolean save = mFreezesText;
4036        int start = 0;
4037        int end = 0;
4038
4039        if (mText != null) {
4040            start = getSelectionStart();
4041            end = getSelectionEnd();
4042            if (start >= 0 || end >= 0) {
4043                // Or save state if there is a selection
4044                save = true;
4045            }
4046        }
4047
4048        if (save) {
4049            SavedState ss = new SavedState(superState);
4050            // XXX Should also save the current scroll position!
4051            ss.selStart = start;
4052            ss.selEnd = end;
4053
4054            if (mText instanceof Spanned) {
4055                Spannable sp = new SpannableStringBuilder(mText);
4056
4057                if (mEditor != null) {
4058                    removeMisspelledSpans(sp);
4059                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
4060                }
4061
4062                ss.text = sp;
4063            } else {
4064                ss.text = mText.toString();
4065            }
4066
4067            if (isFocused() && start >= 0 && end >= 0) {
4068                ss.frozenWithFocus = true;
4069            }
4070
4071            ss.error = getError();
4072
4073            if (mEditor != null) {
4074                ss.editorState = mEditor.saveInstanceState();
4075            }
4076            return ss;
4077        }
4078
4079        return superState;
4080    }
4081
4082    void removeMisspelledSpans(Spannable spannable) {
4083        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4084                SuggestionSpan.class);
4085        for (int i = 0; i < suggestionSpans.length; i++) {
4086            int flags = suggestionSpans[i].getFlags();
4087            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4088                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4089                spannable.removeSpan(suggestionSpans[i]);
4090            }
4091        }
4092    }
4093
4094    @Override
4095    public void onRestoreInstanceState(Parcelable state) {
4096        if (!(state instanceof SavedState)) {
4097            super.onRestoreInstanceState(state);
4098            return;
4099        }
4100
4101        SavedState ss = (SavedState)state;
4102        super.onRestoreInstanceState(ss.getSuperState());
4103
4104        // XXX restore buffer type too, as well as lots of other stuff
4105        if (ss.text != null) {
4106            setText(ss.text);
4107        }
4108
4109        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4110            if (mText instanceof Spannable) {
4111                int len = mText.length();
4112
4113                if (ss.selStart > len || ss.selEnd > len) {
4114                    String restored = "";
4115
4116                    if (ss.text != null) {
4117                        restored = "(restored) ";
4118                    }
4119
4120                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4121                          "/" + ss.selEnd + " out of range for " + restored +
4122                          "text " + mText);
4123                } else {
4124                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4125
4126                    if (ss.frozenWithFocus) {
4127                        createEditorIfNeeded();
4128                        mEditor.mFrozenWithFocus = true;
4129                    }
4130                }
4131            }
4132        }
4133
4134        if (ss.error != null) {
4135            final CharSequence error = ss.error;
4136            // Display the error later, after the first layout pass
4137            post(new Runnable() {
4138                public void run() {
4139                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4140                        setError(error);
4141                    }
4142                }
4143            });
4144        }
4145
4146        if (ss.editorState != null) {
4147            createEditorIfNeeded();
4148            mEditor.restoreInstanceState(ss.editorState);
4149        }
4150    }
4151
4152    /**
4153     * Control whether this text view saves its entire text contents when
4154     * freezing to an icicle, in addition to dynamic state such as cursor
4155     * position.  By default this is false, not saving the text.  Set to true
4156     * if the text in the text view is not being saved somewhere else in
4157     * persistent storage (such as in a content provider) so that if the
4158     * view is later thawed the user will not lose their data.
4159     *
4160     * @param freezesText Controls whether a frozen icicle should include the
4161     * entire text data: true to include it, false to not.
4162     *
4163     * @attr ref android.R.styleable#TextView_freezesText
4164     */
4165    @android.view.RemotableViewMethod
4166    public void setFreezesText(boolean freezesText) {
4167        mFreezesText = freezesText;
4168    }
4169
4170    /**
4171     * Return whether this text view is including its entire text contents
4172     * in frozen icicles.
4173     *
4174     * @return Returns true if text is included, false if it isn't.
4175     *
4176     * @see #setFreezesText
4177     */
4178    public boolean getFreezesText() {
4179        return mFreezesText;
4180    }
4181
4182    ///////////////////////////////////////////////////////////////////////////
4183
4184    /**
4185     * Sets the Factory used to create new Editables.
4186     */
4187    public final void setEditableFactory(Editable.Factory factory) {
4188        mEditableFactory = factory;
4189        setText(mText);
4190    }
4191
4192    /**
4193     * Sets the Factory used to create new Spannables.
4194     */
4195    public final void setSpannableFactory(Spannable.Factory factory) {
4196        mSpannableFactory = factory;
4197        setText(mText);
4198    }
4199
4200    /**
4201     * Sets the string value of the TextView. TextView <em>does not</em> accept
4202     * HTML-like formatting, which you can do with text strings in XML resource files.
4203     * To style your strings, attach android.text.style.* objects to a
4204     * {@link android.text.SpannableString SpannableString}, or see the
4205     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4206     * Available Resource Types</a> documentation for an example of setting
4207     * formatted text in the XML resource file.
4208     *
4209     * @attr ref android.R.styleable#TextView_text
4210     */
4211    @android.view.RemotableViewMethod
4212    public final void setText(CharSequence text) {
4213        setText(text, mBufferType);
4214    }
4215
4216    /**
4217     * Like {@link #setText(CharSequence)},
4218     * except that the cursor position (if any) is retained in the new text.
4219     *
4220     * @param text The new text to place in the text view.
4221     *
4222     * @see #setText(CharSequence)
4223     */
4224    @android.view.RemotableViewMethod
4225    public final void setTextKeepState(CharSequence text) {
4226        setTextKeepState(text, mBufferType);
4227    }
4228
4229    /**
4230     * Sets the text that this TextView is to display (see
4231     * {@link #setText(CharSequence)}) and also sets whether it is stored
4232     * in a styleable/spannable buffer and whether it is editable.
4233     *
4234     * @attr ref android.R.styleable#TextView_text
4235     * @attr ref android.R.styleable#TextView_bufferType
4236     */
4237    public void setText(CharSequence text, BufferType type) {
4238        setText(text, type, true, 0);
4239
4240        if (mCharWrapper != null) {
4241            mCharWrapper.mChars = null;
4242        }
4243    }
4244
4245    private void setText(CharSequence text, BufferType type,
4246                         boolean notifyBefore, int oldlen) {
4247        if (text == null) {
4248            text = "";
4249        }
4250
4251        // If suggestions are not enabled, remove the suggestion spans from the text
4252        if (!isSuggestionsEnabled()) {
4253            text = removeSuggestionSpans(text);
4254        }
4255
4256        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4257
4258        if (text instanceof Spanned &&
4259            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4260            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4261                setHorizontalFadingEdgeEnabled(true);
4262                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4263            } else {
4264                setHorizontalFadingEdgeEnabled(false);
4265                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4266            }
4267            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4268        }
4269
4270        int n = mFilters.length;
4271        for (int i = 0; i < n; i++) {
4272            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4273            if (out != null) {
4274                text = out;
4275            }
4276        }
4277
4278        if (notifyBefore) {
4279            if (mText != null) {
4280                oldlen = mText.length();
4281                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4282            } else {
4283                sendBeforeTextChanged("", 0, 0, text.length());
4284            }
4285        }
4286
4287        boolean needEditableForNotification = false;
4288
4289        if (mListeners != null && mListeners.size() != 0) {
4290            needEditableForNotification = true;
4291        }
4292
4293        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4294                needEditableForNotification) {
4295            createEditorIfNeeded();
4296            mEditor.forgetUndoRedo();
4297            Editable t = mEditableFactory.newEditable(text);
4298            text = t;
4299            setFilters(t, mFilters);
4300            InputMethodManager imm = InputMethodManager.peekInstance();
4301            if (imm != null) imm.restartInput(this);
4302        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4303            text = mSpannableFactory.newSpannable(text);
4304        } else if (!(text instanceof CharWrapper)) {
4305            text = TextUtils.stringOrSpannedString(text);
4306        }
4307
4308        if (mAutoLinkMask != 0) {
4309            Spannable s2;
4310
4311            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4312                s2 = (Spannable) text;
4313            } else {
4314                s2 = mSpannableFactory.newSpannable(text);
4315            }
4316
4317            if (Linkify.addLinks(s2, mAutoLinkMask)) {
4318                text = s2;
4319                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4320
4321                /*
4322                 * We must go ahead and set the text before changing the
4323                 * movement method, because setMovementMethod() may call
4324                 * setText() again to try to upgrade the buffer type.
4325                 */
4326                mText = text;
4327
4328                // Do not change the movement method for text that support text selection as it
4329                // would prevent an arbitrary cursor displacement.
4330                if (mLinksClickable && !textCanBeSelected()) {
4331                    setMovementMethod(LinkMovementMethod.getInstance());
4332                }
4333            }
4334        }
4335
4336        mBufferType = type;
4337        mText = text;
4338
4339        if (mTransformation == null) {
4340            mTransformed = text;
4341        } else {
4342            mTransformed = mTransformation.getTransformation(text, this);
4343        }
4344
4345        final int textLength = text.length();
4346
4347        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4348            Spannable sp = (Spannable) text;
4349
4350            // Remove any ChangeWatchers that might have come from other TextViews.
4351            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4352            final int count = watchers.length;
4353            for (int i = 0; i < count; i++) {
4354                sp.removeSpan(watchers[i]);
4355            }
4356
4357            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4358
4359            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4360                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4361
4362            if (mEditor != null) mEditor.addSpanWatchers(sp);
4363
4364            if (mTransformation != null) {
4365                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4366            }
4367
4368            if (mMovement != null) {
4369                mMovement.initialize(this, (Spannable) text);
4370
4371                /*
4372                 * Initializing the movement method will have set the
4373                 * selection, so reset mSelectionMoved to keep that from
4374                 * interfering with the normal on-focus selection-setting.
4375                 */
4376                if (mEditor != null) mEditor.mSelectionMoved = false;
4377            }
4378        }
4379
4380        if (mLayout != null) {
4381            checkForRelayout();
4382        }
4383
4384        sendOnTextChanged(text, 0, oldlen, textLength);
4385        onTextChanged(text, 0, oldlen, textLength);
4386
4387        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4388
4389        if (needEditableForNotification) {
4390            sendAfterTextChanged((Editable) text);
4391        }
4392
4393        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4394        if (mEditor != null) mEditor.prepareCursorControllers();
4395    }
4396
4397    /**
4398     * Sets the TextView to display the specified slice of the specified
4399     * char array.  You must promise that you will not change the contents
4400     * of the array except for right before another call to setText(),
4401     * since the TextView has no way to know that the text
4402     * has changed and that it needs to invalidate and re-layout.
4403     */
4404    public final void setText(char[] text, int start, int len) {
4405        int oldlen = 0;
4406
4407        if (start < 0 || len < 0 || start + len > text.length) {
4408            throw new IndexOutOfBoundsException(start + ", " + len);
4409        }
4410
4411        /*
4412         * We must do the before-notification here ourselves because if
4413         * the old text is a CharWrapper we destroy it before calling
4414         * into the normal path.
4415         */
4416        if (mText != null) {
4417            oldlen = mText.length();
4418            sendBeforeTextChanged(mText, 0, oldlen, len);
4419        } else {
4420            sendBeforeTextChanged("", 0, 0, len);
4421        }
4422
4423        if (mCharWrapper == null) {
4424            mCharWrapper = new CharWrapper(text, start, len);
4425        } else {
4426            mCharWrapper.set(text, start, len);
4427        }
4428
4429        setText(mCharWrapper, mBufferType, false, oldlen);
4430    }
4431
4432    /**
4433     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4434     * except that the cursor position (if any) is retained in the new text.
4435     *
4436     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4437     */
4438    public final void setTextKeepState(CharSequence text, BufferType type) {
4439        int start = getSelectionStart();
4440        int end = getSelectionEnd();
4441        int len = text.length();
4442
4443        setText(text, type);
4444
4445        if (start >= 0 || end >= 0) {
4446            if (mText instanceof Spannable) {
4447                Selection.setSelection((Spannable) mText,
4448                                       Math.max(0, Math.min(start, len)),
4449                                       Math.max(0, Math.min(end, len)));
4450            }
4451        }
4452    }
4453
4454    @android.view.RemotableViewMethod
4455    public final void setText(@StringRes int resid) {
4456        setText(getContext().getResources().getText(resid));
4457    }
4458
4459    public final void setText(@StringRes int resid, BufferType type) {
4460        setText(getContext().getResources().getText(resid), type);
4461    }
4462
4463    /**
4464     * Sets the text to be displayed when the text of the TextView is empty.
4465     * Null means to use the normal empty text. The hint does not currently
4466     * participate in determining the size of the view.
4467     *
4468     * @attr ref android.R.styleable#TextView_hint
4469     */
4470    @android.view.RemotableViewMethod
4471    public final void setHint(CharSequence hint) {
4472        mHint = TextUtils.stringOrSpannedString(hint);
4473
4474        if (mLayout != null) {
4475            checkForRelayout();
4476        }
4477
4478        if (mText.length() == 0) {
4479            invalidate();
4480        }
4481
4482        // Invalidate display list if hint is currently used
4483        if (mEditor != null && mText.length() == 0 && mHint != null) {
4484            mEditor.invalidateTextDisplayList();
4485        }
4486    }
4487
4488    /**
4489     * Sets the text to be displayed when the text of the TextView is empty,
4490     * from a resource.
4491     *
4492     * @attr ref android.R.styleable#TextView_hint
4493     */
4494    @android.view.RemotableViewMethod
4495    public final void setHint(@StringRes int resid) {
4496        setHint(getContext().getResources().getText(resid));
4497    }
4498
4499    /**
4500     * Returns the hint that is displayed when the text of the TextView
4501     * is empty.
4502     *
4503     * @attr ref android.R.styleable#TextView_hint
4504     */
4505    @ViewDebug.CapturedViewProperty
4506    public CharSequence getHint() {
4507        return mHint;
4508    }
4509
4510    boolean isSingleLine() {
4511        return mSingleLine;
4512    }
4513
4514    private static boolean isMultilineInputType(int type) {
4515        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4516            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4517    }
4518
4519    /**
4520     * Removes the suggestion spans.
4521     */
4522    CharSequence removeSuggestionSpans(CharSequence text) {
4523       if (text instanceof Spanned) {
4524           Spannable spannable;
4525           if (text instanceof Spannable) {
4526               spannable = (Spannable) text;
4527           } else {
4528               spannable = new SpannableString(text);
4529               text = spannable;
4530           }
4531
4532           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4533           for (int i = 0; i < spans.length; i++) {
4534               spannable.removeSpan(spans[i]);
4535           }
4536       }
4537       return text;
4538    }
4539
4540    /**
4541     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4542     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4543     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4544     * then a soft keyboard will not be displayed for this text view.
4545     *
4546     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4547     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4548     * type.
4549     *
4550     * @see #getInputType()
4551     * @see #setRawInputType(int)
4552     * @see android.text.InputType
4553     * @attr ref android.R.styleable#TextView_inputType
4554     */
4555    public void setInputType(int type) {
4556        final boolean wasPassword = isPasswordInputType(getInputType());
4557        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4558        setInputType(type, false);
4559        final boolean isPassword = isPasswordInputType(type);
4560        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4561        boolean forceUpdate = false;
4562        if (isPassword) {
4563            setTransformationMethod(PasswordTransformationMethod.getInstance());
4564            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4565        } else if (isVisiblePassword) {
4566            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4567                forceUpdate = true;
4568            }
4569            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4570        } else if (wasPassword || wasVisiblePassword) {
4571            // not in password mode, clean up typeface and transformation
4572            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4573            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4574                forceUpdate = true;
4575            }
4576        }
4577
4578        boolean singleLine = !isMultilineInputType(type);
4579
4580        // We need to update the single line mode if it has changed or we
4581        // were previously in password mode.
4582        if (mSingleLine != singleLine || forceUpdate) {
4583            // Change single line mode, but only change the transformation if
4584            // we are not in password mode.
4585            applySingleLine(singleLine, !isPassword, true);
4586        }
4587
4588        if (!isSuggestionsEnabled()) {
4589            mText = removeSuggestionSpans(mText);
4590        }
4591
4592        InputMethodManager imm = InputMethodManager.peekInstance();
4593        if (imm != null) imm.restartInput(this);
4594    }
4595
4596    /**
4597     * It would be better to rely on the input type for everything. A password inputType should have
4598     * a password transformation. We should hence use isPasswordInputType instead of this method.
4599     *
4600     * We should:
4601     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4602     * would install the correct transformation).
4603     * - Refuse the installation of a non-password transformation in setTransformation if the input
4604     * type is password.
4605     *
4606     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4607     * is useful since it matches what the user can see (obfuscated text or not).
4608     *
4609     * @return true if the current transformation method is of the password type.
4610     */
4611    boolean hasPasswordTransformationMethod() {
4612        return mTransformation instanceof PasswordTransformationMethod;
4613    }
4614
4615    private static boolean isPasswordInputType(int inputType) {
4616        final int variation =
4617                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4618        return variation
4619                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4620                || variation
4621                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4622                || variation
4623                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4624    }
4625
4626    private static boolean isVisiblePasswordInputType(int inputType) {
4627        final int variation =
4628                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4629        return variation
4630                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4631    }
4632
4633    /**
4634     * Directly change the content type integer of the text view, without
4635     * modifying any other state.
4636     * @see #setInputType(int)
4637     * @see android.text.InputType
4638     * @attr ref android.R.styleable#TextView_inputType
4639     */
4640    public void setRawInputType(int type) {
4641        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4642        createEditorIfNeeded();
4643        mEditor.mInputType = type;
4644    }
4645
4646    private void setInputType(int type, boolean direct) {
4647        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4648        KeyListener input;
4649        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4650            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4651            TextKeyListener.Capitalize cap;
4652            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4653                cap = TextKeyListener.Capitalize.CHARACTERS;
4654            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4655                cap = TextKeyListener.Capitalize.WORDS;
4656            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4657                cap = TextKeyListener.Capitalize.SENTENCES;
4658            } else {
4659                cap = TextKeyListener.Capitalize.NONE;
4660            }
4661            input = TextKeyListener.getInstance(autotext, cap);
4662        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4663            input = DigitsKeyListener.getInstance(
4664                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4665                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4666        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4667            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4668                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4669                    input = DateKeyListener.getInstance();
4670                    break;
4671                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4672                    input = TimeKeyListener.getInstance();
4673                    break;
4674                default:
4675                    input = DateTimeKeyListener.getInstance();
4676                    break;
4677            }
4678        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4679            input = DialerKeyListener.getInstance();
4680        } else {
4681            input = TextKeyListener.getInstance();
4682        }
4683        setRawInputType(type);
4684        if (direct) {
4685            createEditorIfNeeded();
4686            mEditor.mKeyListener = input;
4687        } else {
4688            setKeyListenerOnly(input);
4689        }
4690    }
4691
4692    /**
4693     * Get the type of the editable content.
4694     *
4695     * @see #setInputType(int)
4696     * @see android.text.InputType
4697     */
4698    public int getInputType() {
4699        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4700    }
4701
4702    /**
4703     * Change the editor type integer associated with the text view, which
4704     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4705     * has focus.
4706     * @see #getImeOptions
4707     * @see android.view.inputmethod.EditorInfo
4708     * @attr ref android.R.styleable#TextView_imeOptions
4709     */
4710    public void setImeOptions(int imeOptions) {
4711        createEditorIfNeeded();
4712        mEditor.createInputContentTypeIfNeeded();
4713        mEditor.mInputContentType.imeOptions = imeOptions;
4714    }
4715
4716    /**
4717     * Get the type of the IME editor.
4718     *
4719     * @see #setImeOptions(int)
4720     * @see android.view.inputmethod.EditorInfo
4721     */
4722    public int getImeOptions() {
4723        return mEditor != null && mEditor.mInputContentType != null
4724                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4725    }
4726
4727    /**
4728     * Change the custom IME action associated with the text view, which
4729     * will be reported to an IME with {@link EditorInfo#actionLabel}
4730     * and {@link EditorInfo#actionId} when it has focus.
4731     * @see #getImeActionLabel
4732     * @see #getImeActionId
4733     * @see android.view.inputmethod.EditorInfo
4734     * @attr ref android.R.styleable#TextView_imeActionLabel
4735     * @attr ref android.R.styleable#TextView_imeActionId
4736     */
4737    public void setImeActionLabel(CharSequence label, int actionId) {
4738        createEditorIfNeeded();
4739        mEditor.createInputContentTypeIfNeeded();
4740        mEditor.mInputContentType.imeActionLabel = label;
4741        mEditor.mInputContentType.imeActionId = actionId;
4742    }
4743
4744    /**
4745     * Get the IME action label previous set with {@link #setImeActionLabel}.
4746     *
4747     * @see #setImeActionLabel
4748     * @see android.view.inputmethod.EditorInfo
4749     */
4750    public CharSequence getImeActionLabel() {
4751        return mEditor != null && mEditor.mInputContentType != null
4752                ? mEditor.mInputContentType.imeActionLabel : null;
4753    }
4754
4755    /**
4756     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4757     *
4758     * @see #setImeActionLabel
4759     * @see android.view.inputmethod.EditorInfo
4760     */
4761    public int getImeActionId() {
4762        return mEditor != null && mEditor.mInputContentType != null
4763                ? mEditor.mInputContentType.imeActionId : 0;
4764    }
4765
4766    /**
4767     * Set a special listener to be called when an action is performed
4768     * on the text view.  This will be called when the enter key is pressed,
4769     * or when an action supplied to the IME is selected by the user.  Setting
4770     * this means that the normal hard key event will not insert a newline
4771     * into the text view, even if it is multi-line; holding down the ALT
4772     * modifier will, however, allow the user to insert a newline character.
4773     */
4774    public void setOnEditorActionListener(OnEditorActionListener l) {
4775        createEditorIfNeeded();
4776        mEditor.createInputContentTypeIfNeeded();
4777        mEditor.mInputContentType.onEditorActionListener = l;
4778    }
4779
4780    /**
4781     * Called when an attached input method calls
4782     * {@link InputConnection#performEditorAction(int)
4783     * InputConnection.performEditorAction()}
4784     * for this text view.  The default implementation will call your action
4785     * listener supplied to {@link #setOnEditorActionListener}, or perform
4786     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4787     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4788     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4789     * EditorInfo.IME_ACTION_DONE}.
4790     *
4791     * <p>For backwards compatibility, if no IME options have been set and the
4792     * text view would not normally advance focus on enter, then
4793     * the NEXT and DONE actions received here will be turned into an enter
4794     * key down/up pair to go through the normal key handling.
4795     *
4796     * @param actionCode The code of the action being performed.
4797     *
4798     * @see #setOnEditorActionListener
4799     */
4800    public void onEditorAction(int actionCode) {
4801        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4802        if (ict != null) {
4803            if (ict.onEditorActionListener != null) {
4804                if (ict.onEditorActionListener.onEditorAction(this,
4805                        actionCode, null)) {
4806                    return;
4807                }
4808            }
4809
4810            // This is the handling for some default action.
4811            // Note that for backwards compatibility we don't do this
4812            // default handling if explicit ime options have not been given,
4813            // instead turning this into the normal enter key codes that an
4814            // app may be expecting.
4815            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4816                View v = focusSearch(FOCUS_FORWARD);
4817                if (v != null) {
4818                    if (!v.requestFocus(FOCUS_FORWARD)) {
4819                        throw new IllegalStateException("focus search returned a view " +
4820                                "that wasn't able to take focus!");
4821                    }
4822                }
4823                return;
4824
4825            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4826                View v = focusSearch(FOCUS_BACKWARD);
4827                if (v != null) {
4828                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4829                        throw new IllegalStateException("focus search returned a view " +
4830                                "that wasn't able to take focus!");
4831                    }
4832                }
4833                return;
4834
4835            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4836                InputMethodManager imm = InputMethodManager.peekInstance();
4837                if (imm != null && imm.isActive(this)) {
4838                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4839                }
4840                return;
4841            }
4842        }
4843
4844        ViewRootImpl viewRootImpl = getViewRootImpl();
4845        if (viewRootImpl != null) {
4846            long eventTime = SystemClock.uptimeMillis();
4847            viewRootImpl.dispatchKeyFromIme(
4848                    new KeyEvent(eventTime, eventTime,
4849                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4850                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4851                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4852                    | KeyEvent.FLAG_EDITOR_ACTION));
4853            viewRootImpl.dispatchKeyFromIme(
4854                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4855                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4856                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4857                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4858                    | KeyEvent.FLAG_EDITOR_ACTION));
4859        }
4860    }
4861
4862    /**
4863     * Set the private content type of the text, which is the
4864     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4865     * field that will be filled in when creating an input connection.
4866     *
4867     * @see #getPrivateImeOptions()
4868     * @see EditorInfo#privateImeOptions
4869     * @attr ref android.R.styleable#TextView_privateImeOptions
4870     */
4871    public void setPrivateImeOptions(String type) {
4872        createEditorIfNeeded();
4873        mEditor.createInputContentTypeIfNeeded();
4874        mEditor.mInputContentType.privateImeOptions = type;
4875    }
4876
4877    /**
4878     * Get the private type of the content.
4879     *
4880     * @see #setPrivateImeOptions(String)
4881     * @see EditorInfo#privateImeOptions
4882     */
4883    public String getPrivateImeOptions() {
4884        return mEditor != null && mEditor.mInputContentType != null
4885                ? mEditor.mInputContentType.privateImeOptions : null;
4886    }
4887
4888    /**
4889     * Set the extra input data of the text, which is the
4890     * {@link EditorInfo#extras TextBoxAttribute.extras}
4891     * Bundle that will be filled in when creating an input connection.  The
4892     * given integer is the resource ID of an XML resource holding an
4893     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4894     *
4895     * @see #getInputExtras(boolean)
4896     * @see EditorInfo#extras
4897     * @attr ref android.R.styleable#TextView_editorExtras
4898     */
4899    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4900        createEditorIfNeeded();
4901        XmlResourceParser parser = getResources().getXml(xmlResId);
4902        mEditor.createInputContentTypeIfNeeded();
4903        mEditor.mInputContentType.extras = new Bundle();
4904        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4905    }
4906
4907    /**
4908     * Retrieve the input extras currently associated with the text view, which
4909     * can be viewed as well as modified.
4910     *
4911     * @param create If true, the extras will be created if they don't already
4912     * exist.  Otherwise, null will be returned if none have been created.
4913     * @see #setInputExtras(int)
4914     * @see EditorInfo#extras
4915     * @attr ref android.R.styleable#TextView_editorExtras
4916     */
4917    public Bundle getInputExtras(boolean create) {
4918        if (mEditor == null && !create) return null;
4919        createEditorIfNeeded();
4920        if (mEditor.mInputContentType == null) {
4921            if (!create) return null;
4922            mEditor.createInputContentTypeIfNeeded();
4923        }
4924        if (mEditor.mInputContentType.extras == null) {
4925            if (!create) return null;
4926            mEditor.mInputContentType.extras = new Bundle();
4927        }
4928        return mEditor.mInputContentType.extras;
4929    }
4930
4931    /**
4932     * Returns the error message that was set to be displayed with
4933     * {@link #setError}, or <code>null</code> if no error was set
4934     * or if it the error was cleared by the widget after user input.
4935     */
4936    public CharSequence getError() {
4937        return mEditor == null ? null : mEditor.mError;
4938    }
4939
4940    /**
4941     * Sets the right-hand compound drawable of the TextView to the "error"
4942     * icon and sets an error message that will be displayed in a popup when
4943     * the TextView has focus.  The icon and error message will be reset to
4944     * null when any key events cause changes to the TextView's text.  If the
4945     * <code>error</code> is <code>null</code>, the error message and icon
4946     * will be cleared.
4947     */
4948    @android.view.RemotableViewMethod
4949    public void setError(CharSequence error) {
4950        if (error == null) {
4951            setError(null, null);
4952        } else {
4953            Drawable dr = getContext().getDrawable(
4954                    com.android.internal.R.drawable.indicator_input_error);
4955
4956            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4957            setError(error, dr);
4958        }
4959    }
4960
4961    /**
4962     * Sets the right-hand compound drawable of the TextView to the specified
4963     * icon and sets an error message that will be displayed in a popup when
4964     * the TextView has focus.  The icon and error message will be reset to
4965     * null when any key events cause changes to the TextView's text.  The
4966     * drawable must already have had {@link Drawable#setBounds} set on it.
4967     * If the <code>error</code> is <code>null</code>, the error message will
4968     * be cleared (and you should provide a <code>null</code> icon as well).
4969     */
4970    public void setError(CharSequence error, Drawable icon) {
4971        createEditorIfNeeded();
4972        mEditor.setError(error, icon);
4973        notifyViewAccessibilityStateChangedIfNeeded(
4974                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
4975    }
4976
4977    @Override
4978    protected boolean setFrame(int l, int t, int r, int b) {
4979        boolean result = super.setFrame(l, t, r, b);
4980
4981        if (mEditor != null) mEditor.setFrame();
4982
4983        restartMarqueeIfNeeded();
4984
4985        return result;
4986    }
4987
4988    private void restartMarqueeIfNeeded() {
4989        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4990            mRestartMarquee = false;
4991            startMarquee();
4992        }
4993    }
4994
4995    /**
4996     * Sets the list of input filters that will be used if the buffer is
4997     * Editable. Has no effect otherwise.
4998     *
4999     * @attr ref android.R.styleable#TextView_maxLength
5000     */
5001    public void setFilters(InputFilter[] filters) {
5002        if (filters == null) {
5003            throw new IllegalArgumentException();
5004        }
5005
5006        mFilters = filters;
5007
5008        if (mText instanceof Editable) {
5009            setFilters((Editable) mText, filters);
5010        }
5011    }
5012
5013    /**
5014     * Sets the list of input filters on the specified Editable,
5015     * and includes mInput in the list if it is an InputFilter.
5016     */
5017    private void setFilters(Editable e, InputFilter[] filters) {
5018        if (mEditor != null) {
5019            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5020            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5021            int num = 0;
5022            if (undoFilter) num++;
5023            if (keyFilter) num++;
5024            if (num > 0) {
5025                InputFilter[] nf = new InputFilter[filters.length + num];
5026
5027                System.arraycopy(filters, 0, nf, 0, filters.length);
5028                num = 0;
5029                if (undoFilter) {
5030                    nf[filters.length] = mEditor.mUndoInputFilter;
5031                    num++;
5032                }
5033                if (keyFilter) {
5034                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5035                }
5036
5037                e.setFilters(nf);
5038                return;
5039            }
5040        }
5041        e.setFilters(filters);
5042    }
5043
5044    /**
5045     * Returns the current list of input filters.
5046     *
5047     * @attr ref android.R.styleable#TextView_maxLength
5048     */
5049    public InputFilter[] getFilters() {
5050        return mFilters;
5051    }
5052
5053    /////////////////////////////////////////////////////////////////////////
5054
5055    private int getBoxHeight(Layout l) {
5056        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5057        int padding = (l == mHintLayout) ?
5058                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5059                getExtendedPaddingTop() + getExtendedPaddingBottom();
5060        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5061    }
5062
5063    int getVerticalOffset(boolean forceNormal) {
5064        int voffset = 0;
5065        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5066
5067        Layout l = mLayout;
5068        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5069            l = mHintLayout;
5070        }
5071
5072        if (gravity != Gravity.TOP) {
5073            int boxht = getBoxHeight(l);
5074            int textht = l.getHeight();
5075
5076            if (textht < boxht) {
5077                if (gravity == Gravity.BOTTOM)
5078                    voffset = boxht - textht;
5079                else // (gravity == Gravity.CENTER_VERTICAL)
5080                    voffset = (boxht - textht) >> 1;
5081            }
5082        }
5083        return voffset;
5084    }
5085
5086    private int getBottomVerticalOffset(boolean forceNormal) {
5087        int voffset = 0;
5088        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5089
5090        Layout l = mLayout;
5091        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5092            l = mHintLayout;
5093        }
5094
5095        if (gravity != Gravity.BOTTOM) {
5096            int boxht = getBoxHeight(l);
5097            int textht = l.getHeight();
5098
5099            if (textht < boxht) {
5100                if (gravity == Gravity.TOP)
5101                    voffset = boxht - textht;
5102                else // (gravity == Gravity.CENTER_VERTICAL)
5103                    voffset = (boxht - textht) >> 1;
5104            }
5105        }
5106        return voffset;
5107    }
5108
5109    void invalidateCursorPath() {
5110        if (mHighlightPathBogus) {
5111            invalidateCursor();
5112        } else {
5113            final int horizontalPadding = getCompoundPaddingLeft();
5114            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5115
5116            if (mEditor.mCursorCount == 0) {
5117                synchronized (TEMP_RECTF) {
5118                    /*
5119                     * The reason for this concern about the thickness of the
5120                     * cursor and doing the floor/ceil on the coordinates is that
5121                     * some EditTexts (notably textfields in the Browser) have
5122                     * anti-aliased text where not all the characters are
5123                     * necessarily at integer-multiple locations.  This should
5124                     * make sure the entire cursor gets invalidated instead of
5125                     * sometimes missing half a pixel.
5126                     */
5127                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5128                    if (thick < 1.0f) {
5129                        thick = 1.0f;
5130                    }
5131
5132                    thick /= 2.0f;
5133
5134                    // mHighlightPath is guaranteed to be non null at that point.
5135                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5136
5137                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5138                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5139                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5140                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5141                }
5142            } else {
5143                for (int i = 0; i < mEditor.mCursorCount; i++) {
5144                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5145                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5146                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5147                }
5148            }
5149        }
5150    }
5151
5152    void invalidateCursor() {
5153        int where = getSelectionEnd();
5154
5155        invalidateCursor(where, where, where);
5156    }
5157
5158    private void invalidateCursor(int a, int b, int c) {
5159        if (a >= 0 || b >= 0 || c >= 0) {
5160            int start = Math.min(Math.min(a, b), c);
5161            int end = Math.max(Math.max(a, b), c);
5162            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5163        }
5164    }
5165
5166    /**
5167     * Invalidates the region of text enclosed between the start and end text offsets.
5168     */
5169    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5170        if (mLayout == null) {
5171            invalidate();
5172        } else {
5173                int lineStart = mLayout.getLineForOffset(start);
5174                int top = mLayout.getLineTop(lineStart);
5175
5176                // This is ridiculous, but the descent from the line above
5177                // can hang down into the line we really want to redraw,
5178                // so we have to invalidate part of the line above to make
5179                // sure everything that needs to be redrawn really is.
5180                // (But not the whole line above, because that would cause
5181                // the same problem with the descenders on the line above it!)
5182                if (lineStart > 0) {
5183                    top -= mLayout.getLineDescent(lineStart - 1);
5184                }
5185
5186                int lineEnd;
5187
5188                if (start == end)
5189                    lineEnd = lineStart;
5190                else
5191                    lineEnd = mLayout.getLineForOffset(end);
5192
5193                int bottom = mLayout.getLineBottom(lineEnd);
5194
5195                // mEditor can be null in case selection is set programmatically.
5196                if (invalidateCursor && mEditor != null) {
5197                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5198                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5199                        top = Math.min(top, bounds.top);
5200                        bottom = Math.max(bottom, bounds.bottom);
5201                    }
5202                }
5203
5204                final int compoundPaddingLeft = getCompoundPaddingLeft();
5205                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5206
5207                int left, right;
5208                if (lineStart == lineEnd && !invalidateCursor) {
5209                    left = (int) mLayout.getPrimaryHorizontal(start);
5210                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5211                    left += compoundPaddingLeft;
5212                    right += compoundPaddingLeft;
5213                } else {
5214                    // Rectangle bounding box when the region spans several lines
5215                    left = compoundPaddingLeft;
5216                    right = getWidth() - getCompoundPaddingRight();
5217                }
5218
5219                invalidate(mScrollX + left, verticalPadding + top,
5220                        mScrollX + right, verticalPadding + bottom);
5221        }
5222    }
5223
5224    private void registerForPreDraw() {
5225        if (!mPreDrawRegistered) {
5226            getViewTreeObserver().addOnPreDrawListener(this);
5227            mPreDrawRegistered = true;
5228        }
5229    }
5230
5231    private void unregisterForPreDraw() {
5232        getViewTreeObserver().removeOnPreDrawListener(this);
5233        mPreDrawRegistered = false;
5234        mPreDrawListenerDetached = false;
5235    }
5236
5237    /**
5238     * {@inheritDoc}
5239     */
5240    public boolean onPreDraw() {
5241        if (mLayout == null) {
5242            assumeLayout();
5243        }
5244
5245        if (mMovement != null) {
5246            /* This code also provides auto-scrolling when a cursor is moved using a
5247             * CursorController (insertion point or selection limits).
5248             * For selection, ensure start or end is visible depending on controller's state.
5249             */
5250            int curs = getSelectionEnd();
5251            // Do not create the controller if it is not already created.
5252            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5253                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5254                curs = getSelectionStart();
5255            }
5256
5257            /*
5258             * TODO: This should really only keep the end in view if
5259             * it already was before the text changed.  I'm not sure
5260             * of a good way to tell from here if it was.
5261             */
5262            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5263                curs = mText.length();
5264            }
5265
5266            if (curs >= 0) {
5267                bringPointIntoView(curs);
5268            }
5269        } else {
5270            bringTextIntoView();
5271        }
5272
5273        // This has to be checked here since:
5274        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5275        //   a screen rotation) since layout is not yet initialized at that point.
5276        if (mEditor != null && mEditor.mCreatedWithASelection) {
5277            if (mEditor.extractedTextModeWillBeStarted()) {
5278                mEditor.checkFieldAndSelectCurrentWord();
5279            } else {
5280                mEditor.startSelectionActionMode();
5281            }
5282            mEditor.mCreatedWithASelection = false;
5283        }
5284
5285        // Phone specific code (there is no ExtractEditText on tablets).
5286        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
5287        // not be set. Do the test here instead.
5288        if (isInExtractedMode() && hasSelection() && mEditor != null
5289                && mEditor.mTextActionMode == null && isShown() && hasWindowFocus()) {
5290            mEditor.startSelectionActionMode();
5291        }
5292
5293        unregisterForPreDraw();
5294
5295        return true;
5296    }
5297
5298    @Override
5299    protected void onAttachedToWindow() {
5300        super.onAttachedToWindow();
5301
5302        mTemporaryDetach = false;
5303
5304        if (mEditor != null) mEditor.onAttachedToWindow();
5305
5306        if (mPreDrawListenerDetached) {
5307            getViewTreeObserver().addOnPreDrawListener(this);
5308            mPreDrawListenerDetached = false;
5309        }
5310    }
5311
5312    /** @hide */
5313    @Override
5314    protected void onDetachedFromWindowInternal() {
5315        if (mPreDrawRegistered) {
5316            getViewTreeObserver().removeOnPreDrawListener(this);
5317            mPreDrawListenerDetached = true;
5318        }
5319
5320        resetResolvedDrawables();
5321
5322        if (mEditor != null) mEditor.onDetachedFromWindow();
5323
5324        super.onDetachedFromWindowInternal();
5325    }
5326
5327    @Override
5328    public void onScreenStateChanged(int screenState) {
5329        super.onScreenStateChanged(screenState);
5330        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5331    }
5332
5333    @Override
5334    protected boolean isPaddingOffsetRequired() {
5335        return mShadowRadius != 0 || mDrawables != null;
5336    }
5337
5338    @Override
5339    protected int getLeftPaddingOffset() {
5340        return getCompoundPaddingLeft() - mPaddingLeft +
5341                (int) Math.min(0, mShadowDx - mShadowRadius);
5342    }
5343
5344    @Override
5345    protected int getTopPaddingOffset() {
5346        return (int) Math.min(0, mShadowDy - mShadowRadius);
5347    }
5348
5349    @Override
5350    protected int getBottomPaddingOffset() {
5351        return (int) Math.max(0, mShadowDy + mShadowRadius);
5352    }
5353
5354    private int getFudgedPaddingRight() {
5355        // Add sufficient space for cursor and tone marks
5356        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5357        return Math.max(0, getCompoundPaddingRight() - (cursorWidth - 1));
5358    }
5359
5360    @Override
5361    protected int getRightPaddingOffset() {
5362        return -(getFudgedPaddingRight() - mPaddingRight) +
5363                (int) Math.max(0, mShadowDx + mShadowRadius);
5364    }
5365
5366    @Override
5367    protected boolean verifyDrawable(Drawable who) {
5368        final boolean verified = super.verifyDrawable(who);
5369        if (!verified && mDrawables != null) {
5370            for (Drawable dr : mDrawables.mShowing) {
5371                if (who == dr) {
5372                    return true;
5373                }
5374            }
5375        }
5376        return verified;
5377    }
5378
5379    @Override
5380    public void jumpDrawablesToCurrentState() {
5381        super.jumpDrawablesToCurrentState();
5382        if (mDrawables != null) {
5383            for (Drawable dr : mDrawables.mShowing) {
5384                if (dr != null) {
5385                    dr.jumpToCurrentState();
5386                }
5387            }
5388        }
5389    }
5390
5391    @Override
5392    public void invalidateDrawable(Drawable drawable) {
5393        boolean handled = false;
5394
5395        if (verifyDrawable(drawable)) {
5396            final Rect dirty = drawable.getBounds();
5397            int scrollX = mScrollX;
5398            int scrollY = mScrollY;
5399
5400            // IMPORTANT: The coordinates below are based on the coordinates computed
5401            // for each compound drawable in onDraw(). Make sure to update each section
5402            // accordingly.
5403            final TextView.Drawables drawables = mDrawables;
5404            if (drawables != null) {
5405                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5406                    final int compoundPaddingTop = getCompoundPaddingTop();
5407                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5408                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5409
5410                    scrollX += mPaddingLeft;
5411                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5412                    handled = true;
5413                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5414                    final int compoundPaddingTop = getCompoundPaddingTop();
5415                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5416                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5417
5418                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5419                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5420                    handled = true;
5421                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5422                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5423                    final int compoundPaddingRight = getCompoundPaddingRight();
5424                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5425
5426                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5427                    scrollY += mPaddingTop;
5428                    handled = true;
5429                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5430                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5431                    final int compoundPaddingRight = getCompoundPaddingRight();
5432                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5433
5434                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5435                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5436                    handled = true;
5437                }
5438            }
5439
5440            if (handled) {
5441                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5442                        dirty.right + scrollX, dirty.bottom + scrollY);
5443            }
5444        }
5445
5446        if (!handled) {
5447            super.invalidateDrawable(drawable);
5448        }
5449    }
5450
5451    @Override
5452    public boolean hasOverlappingRendering() {
5453        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5454        return ((getBackground() != null && getBackground().getCurrent() != null)
5455                || mText instanceof Spannable || hasSelection()
5456                || isHorizontalFadingEdgeEnabled());
5457    }
5458
5459    /**
5460     *
5461     * Returns the state of the {@code textIsSelectable} flag (See
5462     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5463     * to allow users to select and copy text in a non-editable TextView, the content of an
5464     * {@link EditText} can always be selected, independently of the value of this flag.
5465     * <p>
5466     *
5467     * @return True if the text displayed in this TextView can be selected by the user.
5468     *
5469     * @attr ref android.R.styleable#TextView_textIsSelectable
5470     */
5471    public boolean isTextSelectable() {
5472        return mEditor == null ? false : mEditor.mTextIsSelectable;
5473    }
5474
5475    /**
5476     * Sets whether the content of this view is selectable by the user. The default is
5477     * {@code false}, meaning that the content is not selectable.
5478     * <p>
5479     * When you use a TextView to display a useful piece of information to the user (such as a
5480     * contact's address), make it selectable, so that the user can select and copy its
5481     * content. You can also use set the XML attribute
5482     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5483     * <p>
5484     * When you call this method to set the value of {@code textIsSelectable}, it sets
5485     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5486     * and {@code longClickable} to the same value. These flags correspond to the attributes
5487     * {@link android.R.styleable#View_focusable android:focusable},
5488     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5489     * {@link android.R.styleable#View_clickable android:clickable}, and
5490     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5491     * flags to a state you had set previously, call one or more of the following methods:
5492     * {@link #setFocusable(boolean) setFocusable()},
5493     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5494     * {@link #setClickable(boolean) setClickable()} or
5495     * {@link #setLongClickable(boolean) setLongClickable()}.
5496     *
5497     * @param selectable Whether the content of this TextView should be selectable.
5498     */
5499    public void setTextIsSelectable(boolean selectable) {
5500        if (!selectable && mEditor == null) return; // false is default value with no edit data
5501
5502        createEditorIfNeeded();
5503        if (mEditor.mTextIsSelectable == selectable) return;
5504
5505        mEditor.mTextIsSelectable = selectable;
5506        setFocusableInTouchMode(selectable);
5507        setFocusable(selectable);
5508        setClickable(selectable);
5509        setLongClickable(selectable);
5510
5511        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5512
5513        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5514        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5515
5516        // Called by setText above, but safer in case of future code changes
5517        mEditor.prepareCursorControllers();
5518    }
5519
5520    @Override
5521    protected int[] onCreateDrawableState(int extraSpace) {
5522        final int[] drawableState;
5523
5524        if (mSingleLine) {
5525            drawableState = super.onCreateDrawableState(extraSpace);
5526        } else {
5527            drawableState = super.onCreateDrawableState(extraSpace + 1);
5528            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5529        }
5530
5531        if (isTextSelectable()) {
5532            // Disable pressed state, which was introduced when TextView was made clickable.
5533            // Prevents text color change.
5534            // setClickable(false) would have a similar effect, but it also disables focus changes
5535            // and long press actions, which are both needed by text selection.
5536            final int length = drawableState.length;
5537            for (int i = 0; i < length; i++) {
5538                if (drawableState[i] == R.attr.state_pressed) {
5539                    final int[] nonPressedState = new int[length - 1];
5540                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5541                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5542                    return nonPressedState;
5543                }
5544            }
5545        }
5546
5547        return drawableState;
5548    }
5549
5550    private Path getUpdatedHighlightPath() {
5551        Path highlight = null;
5552        Paint highlightPaint = mHighlightPaint;
5553
5554        final int selStart = getSelectionStart();
5555        final int selEnd = getSelectionEnd();
5556        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5557            if (selStart == selEnd) {
5558                if (mEditor != null && mEditor.isCursorVisible() &&
5559                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5560                        (2 * Editor.BLINK) < Editor.BLINK) {
5561                    if (mHighlightPathBogus) {
5562                        if (mHighlightPath == null) mHighlightPath = new Path();
5563                        mHighlightPath.reset();
5564                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5565                        mEditor.updateCursorsPositions();
5566                        mHighlightPathBogus = false;
5567                    }
5568
5569                    // XXX should pass to skin instead of drawing directly
5570                    highlightPaint.setColor(mCurTextColor);
5571                    highlightPaint.setStyle(Paint.Style.STROKE);
5572                    highlight = mHighlightPath;
5573                }
5574            } else {
5575                if (mHighlightPathBogus) {
5576                    if (mHighlightPath == null) mHighlightPath = new Path();
5577                    mHighlightPath.reset();
5578                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5579                    mHighlightPathBogus = false;
5580                }
5581
5582                // XXX should pass to skin instead of drawing directly
5583                highlightPaint.setColor(mHighlightColor);
5584                highlightPaint.setStyle(Paint.Style.FILL);
5585
5586                highlight = mHighlightPath;
5587            }
5588        }
5589        return highlight;
5590    }
5591
5592    /**
5593     * @hide
5594     */
5595    public int getHorizontalOffsetForDrawables() {
5596        return 0;
5597    }
5598
5599    @Override
5600    protected void onDraw(Canvas canvas) {
5601        restartMarqueeIfNeeded();
5602
5603        // Draw the background for this view
5604        super.onDraw(canvas);
5605
5606        final int compoundPaddingLeft = getCompoundPaddingLeft();
5607        final int compoundPaddingTop = getCompoundPaddingTop();
5608        final int compoundPaddingRight = getCompoundPaddingRight();
5609        final int compoundPaddingBottom = getCompoundPaddingBottom();
5610        final int scrollX = mScrollX;
5611        final int scrollY = mScrollY;
5612        final int right = mRight;
5613        final int left = mLeft;
5614        final int bottom = mBottom;
5615        final int top = mTop;
5616        final boolean isLayoutRtl = isLayoutRtl();
5617        final int offset = getHorizontalOffsetForDrawables();
5618        final int leftOffset = isLayoutRtl ? 0 : offset;
5619        final int rightOffset = isLayoutRtl ? offset : 0 ;
5620
5621        final Drawables dr = mDrawables;
5622        if (dr != null) {
5623            /*
5624             * Compound, not extended, because the icon is not clipped
5625             * if the text height is smaller.
5626             */
5627
5628            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5629            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5630
5631            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5632            // Make sure to update invalidateDrawable() when changing this code.
5633            if (dr.mShowing[Drawables.LEFT] != null) {
5634                canvas.save();
5635                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5636                                 scrollY + compoundPaddingTop +
5637                                 (vspace - dr.mDrawableHeightLeft) / 2);
5638                dr.mShowing[Drawables.LEFT].draw(canvas);
5639                canvas.restore();
5640            }
5641
5642            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5643            // Make sure to update invalidateDrawable() when changing this code.
5644            if (dr.mShowing[Drawables.RIGHT] != null) {
5645                canvas.save();
5646                canvas.translate(scrollX + right - left - mPaddingRight
5647                        - dr.mDrawableSizeRight - rightOffset,
5648                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5649                dr.mShowing[Drawables.RIGHT].draw(canvas);
5650                canvas.restore();
5651            }
5652
5653            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5654            // Make sure to update invalidateDrawable() when changing this code.
5655            if (dr.mShowing[Drawables.TOP] != null) {
5656                canvas.save();
5657                canvas.translate(scrollX + compoundPaddingLeft +
5658                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5659                dr.mShowing[Drawables.TOP].draw(canvas);
5660                canvas.restore();
5661            }
5662
5663            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5664            // Make sure to update invalidateDrawable() when changing this code.
5665            if (dr.mShowing[Drawables.BOTTOM] != null) {
5666                canvas.save();
5667                canvas.translate(scrollX + compoundPaddingLeft +
5668                        (hspace - dr.mDrawableWidthBottom) / 2,
5669                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5670                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5671                canvas.restore();
5672            }
5673        }
5674
5675        int color = mCurTextColor;
5676
5677        if (mLayout == null) {
5678            assumeLayout();
5679        }
5680
5681        Layout layout = mLayout;
5682
5683        if (mHint != null && mText.length() == 0) {
5684            if (mHintTextColor != null) {
5685                color = mCurHintTextColor;
5686            }
5687
5688            layout = mHintLayout;
5689        }
5690
5691        mTextPaint.setColor(color);
5692        mTextPaint.drawableState = getDrawableState();
5693
5694        canvas.save();
5695        /*  Would be faster if we didn't have to do this. Can we chop the
5696            (displayable) text so that we don't need to do this ever?
5697        */
5698
5699        int extendedPaddingTop = getExtendedPaddingTop();
5700        int extendedPaddingBottom = getExtendedPaddingBottom();
5701
5702        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5703        final int maxScrollY = mLayout.getHeight() - vspace;
5704
5705        float clipLeft = compoundPaddingLeft + scrollX;
5706        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5707        float clipRight = right - left - getFudgedPaddingRight() + scrollX;
5708        float clipBottom = bottom - top + scrollY -
5709                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5710
5711        if (mShadowRadius != 0) {
5712            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5713            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5714
5715            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5716            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5717        }
5718
5719        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5720
5721        int voffsetText = 0;
5722        int voffsetCursor = 0;
5723
5724        // translate in by our padding
5725        /* shortcircuit calling getVerticaOffset() */
5726        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5727            voffsetText = getVerticalOffset(false);
5728            voffsetCursor = getVerticalOffset(true);
5729        }
5730        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5731
5732        final int layoutDirection = getLayoutDirection();
5733        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5734        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5735                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5736            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5737                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5738                final int width = mRight - mLeft;
5739                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5740                final float dx = mLayout.getLineRight(0) - (width - padding);
5741                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5742            }
5743
5744            if (mMarquee != null && mMarquee.isRunning()) {
5745                final float dx = -mMarquee.getScroll();
5746                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5747            }
5748        }
5749
5750        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5751
5752        Path highlight = getUpdatedHighlightPath();
5753        if (mEditor != null) {
5754            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5755        } else {
5756            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5757        }
5758
5759        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5760            final float dx = mMarquee.getGhostOffset();
5761            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5762            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5763        }
5764
5765        canvas.restore();
5766    }
5767
5768    @Override
5769    public void getFocusedRect(Rect r) {
5770        if (mLayout == null) {
5771            super.getFocusedRect(r);
5772            return;
5773        }
5774
5775        int selEnd = getSelectionEnd();
5776        if (selEnd < 0) {
5777            super.getFocusedRect(r);
5778            return;
5779        }
5780
5781        int selStart = getSelectionStart();
5782        if (selStart < 0 || selStart >= selEnd) {
5783            int line = mLayout.getLineForOffset(selEnd);
5784            r.top = mLayout.getLineTop(line);
5785            r.bottom = mLayout.getLineBottom(line);
5786            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5787            r.right = r.left + 4;
5788        } else {
5789            int lineStart = mLayout.getLineForOffset(selStart);
5790            int lineEnd = mLayout.getLineForOffset(selEnd);
5791            r.top = mLayout.getLineTop(lineStart);
5792            r.bottom = mLayout.getLineBottom(lineEnd);
5793            if (lineStart == lineEnd) {
5794                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5795                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5796            } else {
5797                // Selection extends across multiple lines -- make the focused
5798                // rect cover the entire width.
5799                if (mHighlightPathBogus) {
5800                    if (mHighlightPath == null) mHighlightPath = new Path();
5801                    mHighlightPath.reset();
5802                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5803                    mHighlightPathBogus = false;
5804                }
5805                synchronized (TEMP_RECTF) {
5806                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5807                    r.left = (int)TEMP_RECTF.left-1;
5808                    r.right = (int)TEMP_RECTF.right+1;
5809                }
5810            }
5811        }
5812
5813        // Adjust for padding and gravity.
5814        int paddingLeft = getCompoundPaddingLeft();
5815        int paddingTop = getExtendedPaddingTop();
5816        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5817            paddingTop += getVerticalOffset(false);
5818        }
5819        r.offset(paddingLeft, paddingTop);
5820        int paddingBottom = getExtendedPaddingBottom();
5821        r.bottom += paddingBottom;
5822    }
5823
5824    /**
5825     * Return the number of lines of text, or 0 if the internal Layout has not
5826     * been built.
5827     */
5828    public int getLineCount() {
5829        return mLayout != null ? mLayout.getLineCount() : 0;
5830    }
5831
5832    /**
5833     * Return the baseline for the specified line (0...getLineCount() - 1)
5834     * If bounds is not null, return the top, left, right, bottom extents
5835     * of the specified line in it. If the internal Layout has not been built,
5836     * return 0 and set bounds to (0, 0, 0, 0)
5837     * @param line which line to examine (0..getLineCount() - 1)
5838     * @param bounds Optional. If not null, it returns the extent of the line
5839     * @return the Y-coordinate of the baseline
5840     */
5841    public int getLineBounds(int line, Rect bounds) {
5842        if (mLayout == null) {
5843            if (bounds != null) {
5844                bounds.set(0, 0, 0, 0);
5845            }
5846            return 0;
5847        }
5848        else {
5849            int baseline = mLayout.getLineBounds(line, bounds);
5850
5851            int voffset = getExtendedPaddingTop();
5852            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5853                voffset += getVerticalOffset(true);
5854            }
5855            if (bounds != null) {
5856                bounds.offset(getCompoundPaddingLeft(), voffset);
5857            }
5858            return baseline + voffset;
5859        }
5860    }
5861
5862    @Override
5863    public int getBaseline() {
5864        if (mLayout == null) {
5865            return super.getBaseline();
5866        }
5867
5868        return getBaselineOffset() + mLayout.getLineBaseline(0);
5869    }
5870
5871    int getBaselineOffset() {
5872        int voffset = 0;
5873        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5874            voffset = getVerticalOffset(true);
5875        }
5876
5877        if (isLayoutModeOptical(mParent)) {
5878            voffset -= getOpticalInsets().top;
5879        }
5880
5881        return getExtendedPaddingTop() + voffset;
5882    }
5883
5884    /**
5885     * @hide
5886     */
5887    @Override
5888    protected int getFadeTop(boolean offsetRequired) {
5889        if (mLayout == null) return 0;
5890
5891        int voffset = 0;
5892        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5893            voffset = getVerticalOffset(true);
5894        }
5895
5896        if (offsetRequired) voffset += getTopPaddingOffset();
5897
5898        return getExtendedPaddingTop() + voffset;
5899    }
5900
5901    /**
5902     * @hide
5903     */
5904    @Override
5905    protected int getFadeHeight(boolean offsetRequired) {
5906        return mLayout != null ? mLayout.getHeight() : 0;
5907    }
5908
5909    /**
5910     * @hide
5911     */
5912    @Override
5913    public int getPointerShape(MotionEvent event, float x, float y) {
5914        if (isTextSelectable() || isTextEditable()) {
5915            return PointerIcon.STYLE_TEXT;
5916        }
5917        return super.getPointerShape(event, x, y);
5918    }
5919
5920    @Override
5921    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5922        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
5923        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
5924        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
5925        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
5926            return true;
5927        }
5928        return super.onKeyPreIme(keyCode, event);
5929    }
5930
5931    /**
5932     * @hide
5933     */
5934    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
5935        // Do nothing unless mEditor is in text action mode.
5936        if (mEditor == null || mEditor.mTextActionMode == null) {
5937            return false;
5938        }
5939
5940        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5941            KeyEvent.DispatcherState state = getKeyDispatcherState();
5942            if (state != null) {
5943                state.startTracking(event, this);
5944            }
5945            return true;
5946        } else if (event.getAction() == KeyEvent.ACTION_UP) {
5947            KeyEvent.DispatcherState state = getKeyDispatcherState();
5948            if (state != null) {
5949                state.handleUpEvent(event);
5950            }
5951            if (event.isTracking() && !event.isCanceled()) {
5952                stopTextActionMode();
5953                return true;
5954            }
5955        }
5956        return false;
5957    }
5958
5959    @Override
5960    public boolean onKeyDown(int keyCode, KeyEvent event) {
5961        int which = doKeyDown(keyCode, event, null);
5962        if (which == 0) {
5963            return super.onKeyDown(keyCode, event);
5964        }
5965
5966        return true;
5967    }
5968
5969    @Override
5970    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5971        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5972
5973        int which = doKeyDown(keyCode, down, event);
5974        if (which == 0) {
5975            // Go through default dispatching.
5976            return super.onKeyMultiple(keyCode, repeatCount, event);
5977        }
5978        if (which == -1) {
5979            // Consumed the whole thing.
5980            return true;
5981        }
5982
5983        repeatCount--;
5984
5985        // We are going to dispatch the remaining events to either the input
5986        // or movement method.  To do this, we will just send a repeated stream
5987        // of down and up events until we have done the complete repeatCount.
5988        // It would be nice if those interfaces had an onKeyMultiple() method,
5989        // but adding that is a more complicated change.
5990        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5991        if (which == 1) {
5992            // mEditor and mEditor.mInput are not null from doKeyDown
5993            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5994            while (--repeatCount > 0) {
5995                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5996                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5997            }
5998            hideErrorIfUnchanged();
5999
6000        } else if (which == 2) {
6001            // mMovement is not null from doKeyDown
6002            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6003            while (--repeatCount > 0) {
6004                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6005                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6006            }
6007        }
6008
6009        return true;
6010    }
6011
6012    /**
6013     * Returns true if pressing ENTER in this field advances focus instead
6014     * of inserting the character.  This is true mostly in single-line fields,
6015     * but also in mail addresses and subjects which will display on multiple
6016     * lines but where it doesn't make sense to insert newlines.
6017     */
6018    private boolean shouldAdvanceFocusOnEnter() {
6019        if (getKeyListener() == null) {
6020            return false;
6021        }
6022
6023        if (mSingleLine) {
6024            return true;
6025        }
6026
6027        if (mEditor != null &&
6028                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6029            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6030            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6031                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6032                return true;
6033            }
6034        }
6035
6036        return false;
6037    }
6038
6039    /**
6040     * Returns true if pressing TAB in this field advances focus instead
6041     * of inserting the character.  Insert tabs only in multi-line editors.
6042     */
6043    private boolean shouldAdvanceFocusOnTab() {
6044        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6045                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6046            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6047            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6048                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6049                return false;
6050            }
6051        }
6052        return true;
6053    }
6054
6055    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6056        if (!isEnabled()) {
6057            return 0;
6058        }
6059
6060        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6061        // While this shouldn't be necessary because any time we're preventing default movement we
6062        // should be restricting the focus to remain within this view, thus we'll also receive
6063        // the key up event, occasionally key up events will get dropped and we don't want to
6064        // prevent the user from traversing out of this on the next key down.
6065        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6066            mPreventDefaultMovement = false;
6067        }
6068
6069        switch (keyCode) {
6070            case KeyEvent.KEYCODE_ENTER:
6071                if (event.hasNoModifiers()) {
6072                    // When mInputContentType is set, we know that we are
6073                    // running in a "modern" cupcake environment, so don't need
6074                    // to worry about the application trying to capture
6075                    // enter key events.
6076                    if (mEditor != null && mEditor.mInputContentType != null) {
6077                        // If there is an action listener, given them a
6078                        // chance to consume the event.
6079                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6080                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6081                                this, EditorInfo.IME_NULL, event)) {
6082                            mEditor.mInputContentType.enterDown = true;
6083                            // We are consuming the enter key for them.
6084                            return -1;
6085                        }
6086                    }
6087
6088                    // If our editor should move focus when enter is pressed, or
6089                    // this is a generated event from an IME action button, then
6090                    // don't let it be inserted into the text.
6091                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6092                            || shouldAdvanceFocusOnEnter()) {
6093                        if (hasOnClickListeners()) {
6094                            return 0;
6095                        }
6096                        return -1;
6097                    }
6098                }
6099                break;
6100
6101            case KeyEvent.KEYCODE_DPAD_CENTER:
6102                if (event.hasNoModifiers()) {
6103                    if (shouldAdvanceFocusOnEnter()) {
6104                        return 0;
6105                    }
6106                }
6107                break;
6108
6109            case KeyEvent.KEYCODE_TAB:
6110                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6111                    if (shouldAdvanceFocusOnTab()) {
6112                        return 0;
6113                    }
6114                }
6115                break;
6116
6117                // Has to be done on key down (and not on key up) to correctly be intercepted.
6118            case KeyEvent.KEYCODE_BACK:
6119                if (mEditor != null && mEditor.mTextActionMode != null) {
6120                    stopTextActionMode();
6121                    return -1;
6122                }
6123                break;
6124        }
6125
6126        if (mEditor != null && mEditor.mKeyListener != null) {
6127            boolean doDown = true;
6128            if (otherEvent != null) {
6129                try {
6130                    beginBatchEdit();
6131                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6132                            otherEvent);
6133                    hideErrorIfUnchanged();
6134                    doDown = false;
6135                    if (handled) {
6136                        return -1;
6137                    }
6138                } catch (AbstractMethodError e) {
6139                    // onKeyOther was added after 1.0, so if it isn't
6140                    // implemented we need to try to dispatch as a regular down.
6141                } finally {
6142                    endBatchEdit();
6143                }
6144            }
6145
6146            if (doDown) {
6147                beginBatchEdit();
6148                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6149                        keyCode, event);
6150                endBatchEdit();
6151                hideErrorIfUnchanged();
6152                if (handled) return 1;
6153            }
6154        }
6155
6156        // bug 650865: sometimes we get a key event before a layout.
6157        // don't try to move around if we don't know the layout.
6158
6159        if (mMovement != null && mLayout != null) {
6160            boolean doDown = true;
6161            if (otherEvent != null) {
6162                try {
6163                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6164                            otherEvent);
6165                    doDown = false;
6166                    if (handled) {
6167                        return -1;
6168                    }
6169                } catch (AbstractMethodError e) {
6170                    // onKeyOther was added after 1.0, so if it isn't
6171                    // implemented we need to try to dispatch as a regular down.
6172                }
6173            }
6174            if (doDown) {
6175                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6176                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6177                        mPreventDefaultMovement = true;
6178                    }
6179                    return 2;
6180                }
6181            }
6182        }
6183
6184        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ? -1 : 0;
6185    }
6186
6187    /**
6188     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6189     * can be recorded.
6190     * @hide
6191     */
6192    public void resetErrorChangedFlag() {
6193        /*
6194         * Keep track of what the error was before doing the input
6195         * so that if an input filter changed the error, we leave
6196         * that error showing.  Otherwise, we take down whatever
6197         * error was showing when the user types something.
6198         */
6199        if (mEditor != null) mEditor.mErrorWasChanged = false;
6200    }
6201
6202    /**
6203     * @hide
6204     */
6205    public void hideErrorIfUnchanged() {
6206        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6207            setError(null, null);
6208        }
6209    }
6210
6211    @Override
6212    public boolean onKeyUp(int keyCode, KeyEvent event) {
6213        if (!isEnabled()) {
6214            return super.onKeyUp(keyCode, event);
6215        }
6216
6217        if (!KeyEvent.isModifierKey(keyCode)) {
6218            mPreventDefaultMovement = false;
6219        }
6220
6221        switch (keyCode) {
6222            case KeyEvent.KEYCODE_DPAD_CENTER:
6223                if (event.hasNoModifiers()) {
6224                    /*
6225                     * If there is a click listener, just call through to
6226                     * super, which will invoke it.
6227                     *
6228                     * If there isn't a click listener, try to show the soft
6229                     * input method.  (It will also
6230                     * call performClick(), but that won't do anything in
6231                     * this case.)
6232                     */
6233                    if (!hasOnClickListeners()) {
6234                        if (mMovement != null && mText instanceof Editable
6235                                && mLayout != null && onCheckIsTextEditor()) {
6236                            InputMethodManager imm = InputMethodManager.peekInstance();
6237                            viewClicked(imm);
6238                            if (imm != null && getShowSoftInputOnFocus()) {
6239                                imm.showSoftInput(this, 0);
6240                            }
6241                        }
6242                    }
6243                }
6244                return super.onKeyUp(keyCode, event);
6245
6246            case KeyEvent.KEYCODE_ENTER:
6247                if (event.hasNoModifiers()) {
6248                    if (mEditor != null && mEditor.mInputContentType != null
6249                            && mEditor.mInputContentType.onEditorActionListener != null
6250                            && mEditor.mInputContentType.enterDown) {
6251                        mEditor.mInputContentType.enterDown = false;
6252                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6253                                this, EditorInfo.IME_NULL, event)) {
6254                            return true;
6255                        }
6256                    }
6257
6258                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6259                            || shouldAdvanceFocusOnEnter()) {
6260                        /*
6261                         * If there is a click listener, just call through to
6262                         * super, which will invoke it.
6263                         *
6264                         * If there isn't a click listener, try to advance focus,
6265                         * but still call through to super, which will reset the
6266                         * pressed state and longpress state.  (It will also
6267                         * call performClick(), but that won't do anything in
6268                         * this case.)
6269                         */
6270                        if (!hasOnClickListeners()) {
6271                            View v = focusSearch(FOCUS_DOWN);
6272
6273                            if (v != null) {
6274                                if (!v.requestFocus(FOCUS_DOWN)) {
6275                                    throw new IllegalStateException(
6276                                            "focus search returned a view " +
6277                                            "that wasn't able to take focus!");
6278                                }
6279
6280                                /*
6281                                 * Return true because we handled the key; super
6282                                 * will return false because there was no click
6283                                 * listener.
6284                                 */
6285                                super.onKeyUp(keyCode, event);
6286                                return true;
6287                            } else if ((event.getFlags()
6288                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6289                                // No target for next focus, but make sure the IME
6290                                // if this came from it.
6291                                InputMethodManager imm = InputMethodManager.peekInstance();
6292                                if (imm != null && imm.isActive(this)) {
6293                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6294                                }
6295                            }
6296                        }
6297                    }
6298                    return super.onKeyUp(keyCode, event);
6299                }
6300                break;
6301        }
6302
6303        if (mEditor != null && mEditor.mKeyListener != null)
6304            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6305                return true;
6306
6307        if (mMovement != null && mLayout != null)
6308            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6309                return true;
6310
6311        return super.onKeyUp(keyCode, event);
6312    }
6313
6314    @Override
6315    public boolean onCheckIsTextEditor() {
6316        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6317    }
6318
6319    @Override
6320    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6321        if (onCheckIsTextEditor() && isEnabled()) {
6322            mEditor.createInputMethodStateIfNeeded();
6323            outAttrs.inputType = getInputType();
6324            if (mEditor.mInputContentType != null) {
6325                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6326                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6327                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6328                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6329                outAttrs.extras = mEditor.mInputContentType.extras;
6330            } else {
6331                outAttrs.imeOptions = EditorInfo.IME_NULL;
6332            }
6333            if (focusSearch(FOCUS_DOWN) != null) {
6334                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6335            }
6336            if (focusSearch(FOCUS_UP) != null) {
6337                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6338            }
6339            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6340                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6341                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6342                    // An action has not been set, but the enter key will move to
6343                    // the next focus, so set the action to that.
6344                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6345                } else {
6346                    // An action has not been set, and there is no focus to move
6347                    // to, so let's just supply a "done" action.
6348                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6349                }
6350                if (!shouldAdvanceFocusOnEnter()) {
6351                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6352                }
6353            }
6354            if (isMultilineInputType(outAttrs.inputType)) {
6355                // Multi-line text editors should always show an enter key.
6356                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6357            }
6358            outAttrs.hintText = mHint;
6359            if (mText instanceof Editable) {
6360                InputConnection ic = new EditableInputConnection(this);
6361                outAttrs.initialSelStart = getSelectionStart();
6362                outAttrs.initialSelEnd = getSelectionEnd();
6363                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6364                return ic;
6365            }
6366        }
6367        return null;
6368    }
6369
6370    /**
6371     * If this TextView contains editable content, extract a portion of it
6372     * based on the information in <var>request</var> in to <var>outText</var>.
6373     * @return Returns true if the text was successfully extracted, else false.
6374     */
6375    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6376        createEditorIfNeeded();
6377        return mEditor.extractText(request, outText);
6378    }
6379
6380    /**
6381     * This is used to remove all style-impacting spans from text before new
6382     * extracted text is being replaced into it, so that we don't have any
6383     * lingering spans applied during the replace.
6384     */
6385    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6386        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6387        int i = spans.length;
6388        while (i > 0) {
6389            i--;
6390            spannable.removeSpan(spans[i]);
6391        }
6392    }
6393
6394    /**
6395     * Apply to this text view the given extracted text, as previously
6396     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6397     */
6398    public void setExtractedText(ExtractedText text) {
6399        Editable content = getEditableText();
6400        if (text.text != null) {
6401            if (content == null) {
6402                setText(text.text, TextView.BufferType.EDITABLE);
6403            } else {
6404                int start = 0;
6405                int end = content.length();
6406
6407                if (text.partialStartOffset >= 0) {
6408                    final int N = content.length();
6409                    start = text.partialStartOffset;
6410                    if (start > N) start = N;
6411                    end = text.partialEndOffset;
6412                    if (end > N) end = N;
6413                }
6414
6415                removeParcelableSpans(content, start, end);
6416                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6417                    if (text.text instanceof Spanned) {
6418                        // OK to copy spans only.
6419                        TextUtils.copySpansFrom((Spanned) text.text, start, end,
6420                                Object.class, content, start);
6421                    }
6422                } else {
6423                    content.replace(start, end, text.text);
6424                }
6425            }
6426        }
6427
6428        // Now set the selection position...  make sure it is in range, to
6429        // avoid crashes.  If this is a partial update, it is possible that
6430        // the underlying text may have changed, causing us problems here.
6431        // Also we just don't want to trust clients to do the right thing.
6432        Spannable sp = (Spannable)getText();
6433        final int N = sp.length();
6434        int start = text.selectionStart;
6435        if (start < 0) start = 0;
6436        else if (start > N) start = N;
6437        int end = text.selectionEnd;
6438        if (end < 0) end = 0;
6439        else if (end > N) end = N;
6440        Selection.setSelection(sp, start, end);
6441
6442        // Finally, update the selection mode.
6443        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6444            MetaKeyKeyListener.startSelecting(this, sp);
6445        } else {
6446            MetaKeyKeyListener.stopSelecting(this, sp);
6447        }
6448    }
6449
6450    /**
6451     * @hide
6452     */
6453    public void setExtracting(ExtractedTextRequest req) {
6454        if (mEditor.mInputMethodState != null) {
6455            mEditor.mInputMethodState.mExtractedTextRequest = req;
6456        }
6457        // This would stop a possible selection mode, but no such mode is started in case
6458        // extracted mode will start. Some text is selected though, and will trigger an action mode
6459        // in the extracted view.
6460        mEditor.hideCursorAndSpanControllers();
6461        stopTextActionMode();
6462    }
6463
6464    /**
6465     * Called by the framework in response to a text completion from
6466     * the current input method, provided by it calling
6467     * {@link InputConnection#commitCompletion
6468     * InputConnection.commitCompletion()}.  The default implementation does
6469     * nothing; text views that are supporting auto-completion should override
6470     * this to do their desired behavior.
6471     *
6472     * @param text The auto complete text the user has selected.
6473     */
6474    public void onCommitCompletion(CompletionInfo text) {
6475        // intentionally empty
6476    }
6477
6478    /**
6479     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6480     * a dictionnary) from the current input method, provided by it calling
6481     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6482     * implementation flashes the background of the corrected word to provide feedback to the user.
6483     *
6484     * @param info The auto correct info about the text that was corrected.
6485     */
6486    public void onCommitCorrection(CorrectionInfo info) {
6487        if (mEditor != null) mEditor.onCommitCorrection(info);
6488    }
6489
6490    public void beginBatchEdit() {
6491        if (mEditor != null) mEditor.beginBatchEdit();
6492    }
6493
6494    public void endBatchEdit() {
6495        if (mEditor != null) mEditor.endBatchEdit();
6496    }
6497
6498    /**
6499     * Called by the framework in response to a request to begin a batch
6500     * of edit operations through a call to link {@link #beginBatchEdit()}.
6501     */
6502    public void onBeginBatchEdit() {
6503        // intentionally empty
6504    }
6505
6506    /**
6507     * Called by the framework in response to a request to end a batch
6508     * of edit operations through a call to link {@link #endBatchEdit}.
6509     */
6510    public void onEndBatchEdit() {
6511        // intentionally empty
6512    }
6513
6514    /**
6515     * Called by the framework in response to a private command from the
6516     * current method, provided by it calling
6517     * {@link InputConnection#performPrivateCommand
6518     * InputConnection.performPrivateCommand()}.
6519     *
6520     * @param action The action name of the command.
6521     * @param data Any additional data for the command.  This may be null.
6522     * @return Return true if you handled the command, else false.
6523     */
6524    public boolean onPrivateIMECommand(String action, Bundle data) {
6525        return false;
6526    }
6527
6528    private void nullLayouts() {
6529        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6530            mSavedLayout = (BoringLayout) mLayout;
6531        }
6532        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6533            mSavedHintLayout = (BoringLayout) mHintLayout;
6534        }
6535
6536        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6537
6538        mBoring = mHintBoring = null;
6539
6540        // Since it depends on the value of mLayout
6541        if (mEditor != null) mEditor.prepareCursorControllers();
6542    }
6543
6544    /**
6545     * Make a new Layout based on the already-measured size of the view,
6546     * on the assumption that it was measured correctly at some point.
6547     */
6548    private void assumeLayout() {
6549        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6550
6551        if (width < 1) {
6552            width = 0;
6553        }
6554
6555        int physicalWidth = width;
6556
6557        if (mHorizontallyScrolling) {
6558            width = VERY_WIDE;
6559        }
6560
6561        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6562                      physicalWidth, false);
6563    }
6564
6565    private Layout.Alignment getLayoutAlignment() {
6566        Layout.Alignment alignment;
6567        switch (getTextAlignment()) {
6568            case TEXT_ALIGNMENT_GRAVITY:
6569                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6570                    case Gravity.START:
6571                        alignment = Layout.Alignment.ALIGN_NORMAL;
6572                        break;
6573                    case Gravity.END:
6574                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6575                        break;
6576                    case Gravity.LEFT:
6577                        alignment = Layout.Alignment.ALIGN_LEFT;
6578                        break;
6579                    case Gravity.RIGHT:
6580                        alignment = Layout.Alignment.ALIGN_RIGHT;
6581                        break;
6582                    case Gravity.CENTER_HORIZONTAL:
6583                        alignment = Layout.Alignment.ALIGN_CENTER;
6584                        break;
6585                    default:
6586                        alignment = Layout.Alignment.ALIGN_NORMAL;
6587                        break;
6588                }
6589                break;
6590            case TEXT_ALIGNMENT_TEXT_START:
6591                alignment = Layout.Alignment.ALIGN_NORMAL;
6592                break;
6593            case TEXT_ALIGNMENT_TEXT_END:
6594                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6595                break;
6596            case TEXT_ALIGNMENT_CENTER:
6597                alignment = Layout.Alignment.ALIGN_CENTER;
6598                break;
6599            case TEXT_ALIGNMENT_VIEW_START:
6600                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6601                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6602                break;
6603            case TEXT_ALIGNMENT_VIEW_END:
6604                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6605                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6606                break;
6607            case TEXT_ALIGNMENT_INHERIT:
6608                // This should never happen as we have already resolved the text alignment
6609                // but better safe than sorry so we just fall through
6610            default:
6611                alignment = Layout.Alignment.ALIGN_NORMAL;
6612                break;
6613        }
6614        return alignment;
6615    }
6616
6617    /**
6618     * The width passed in is now the desired layout width,
6619     * not the full view width with padding.
6620     * {@hide}
6621     */
6622    protected void makeNewLayout(int wantWidth, int hintWidth,
6623                                 BoringLayout.Metrics boring,
6624                                 BoringLayout.Metrics hintBoring,
6625                                 int ellipsisWidth, boolean bringIntoView) {
6626        stopMarquee();
6627
6628        // Update "old" cached values
6629        mOldMaximum = mMaximum;
6630        mOldMaxMode = mMaxMode;
6631
6632        mHighlightPathBogus = true;
6633
6634        if (wantWidth < 0) {
6635            wantWidth = 0;
6636        }
6637        if (hintWidth < 0) {
6638            hintWidth = 0;
6639        }
6640
6641        Layout.Alignment alignment = getLayoutAlignment();
6642        final boolean testDirChange = mSingleLine && mLayout != null &&
6643            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6644             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6645        int oldDir = 0;
6646        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6647        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6648        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6649                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6650        TruncateAt effectiveEllipsize = mEllipsize;
6651        if (mEllipsize == TruncateAt.MARQUEE &&
6652                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6653            effectiveEllipsize = TruncateAt.END_SMALL;
6654        }
6655
6656        if (mTextDir == null) {
6657            mTextDir = getTextDirectionHeuristic();
6658        }
6659
6660        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6661                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6662        if (switchEllipsize) {
6663            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6664                    TruncateAt.END : TruncateAt.MARQUEE;
6665            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6666                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6667        }
6668
6669        shouldEllipsize = mEllipsize != null;
6670        mHintLayout = null;
6671
6672        if (mHint != null) {
6673            if (shouldEllipsize) hintWidth = wantWidth;
6674
6675            if (hintBoring == UNKNOWN_BORING) {
6676                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6677                                                   mHintBoring);
6678                if (hintBoring != null) {
6679                    mHintBoring = hintBoring;
6680                }
6681            }
6682
6683            if (hintBoring != null) {
6684                if (hintBoring.width <= hintWidth &&
6685                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6686                    if (mSavedHintLayout != null) {
6687                        mHintLayout = mSavedHintLayout.
6688                                replaceOrMake(mHint, mTextPaint,
6689                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6690                                hintBoring, mIncludePad);
6691                    } else {
6692                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6693                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6694                                hintBoring, mIncludePad);
6695                    }
6696
6697                    mSavedHintLayout = (BoringLayout) mHintLayout;
6698                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6699                    if (mSavedHintLayout != null) {
6700                        mHintLayout = mSavedHintLayout.
6701                                replaceOrMake(mHint, mTextPaint,
6702                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6703                                hintBoring, mIncludePad, mEllipsize,
6704                                ellipsisWidth);
6705                    } else {
6706                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6707                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6708                                hintBoring, mIncludePad, mEllipsize,
6709                                ellipsisWidth);
6710                    }
6711                }
6712            }
6713            // TODO: code duplication with makeSingleLayout()
6714            if (mHintLayout == null) {
6715                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6716                        mHint.length(), mTextPaint, hintWidth)
6717                        .setAlignment(alignment)
6718                        .setTextDirection(mTextDir)
6719                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6720                        .setIncludePad(mIncludePad)
6721                        .setBreakStrategy(mBreakStrategy)
6722                        .setHyphenationFrequency(mHyphenationFrequency);
6723                if (shouldEllipsize) {
6724                    builder.setEllipsize(mEllipsize)
6725                            .setEllipsizedWidth(ellipsisWidth)
6726                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6727                }
6728                mHintLayout = builder.build();
6729            }
6730        }
6731
6732        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6733            registerForPreDraw();
6734        }
6735
6736        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6737            if (!compressText(ellipsisWidth)) {
6738                final int height = mLayoutParams.height;
6739                // If the size of the view does not depend on the size of the text, try to
6740                // start the marquee immediately
6741                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6742                    startMarquee();
6743                } else {
6744                    // Defer the start of the marquee until we know our width (see setFrame())
6745                    mRestartMarquee = true;
6746                }
6747            }
6748        }
6749
6750        // CursorControllers need a non-null mLayout
6751        if (mEditor != null) mEditor.prepareCursorControllers();
6752    }
6753
6754    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6755            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6756            boolean useSaved) {
6757        Layout result = null;
6758        if (mText instanceof Spannable) {
6759            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6760                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6761                    mBreakStrategy, mHyphenationFrequency,
6762                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6763        } else {
6764            if (boring == UNKNOWN_BORING) {
6765                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6766                if (boring != null) {
6767                    mBoring = boring;
6768                }
6769            }
6770
6771            if (boring != null) {
6772                if (boring.width <= wantWidth &&
6773                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6774                    if (useSaved && mSavedLayout != null) {
6775                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6776                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6777                                boring, mIncludePad);
6778                    } else {
6779                        result = BoringLayout.make(mTransformed, mTextPaint,
6780                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6781                                boring, mIncludePad);
6782                    }
6783
6784                    if (useSaved) {
6785                        mSavedLayout = (BoringLayout) result;
6786                    }
6787                } else if (shouldEllipsize && boring.width <= wantWidth) {
6788                    if (useSaved && mSavedLayout != null) {
6789                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6790                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6791                                boring, mIncludePad, effectiveEllipsize,
6792                                ellipsisWidth);
6793                    } else {
6794                        result = BoringLayout.make(mTransformed, mTextPaint,
6795                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6796                                boring, mIncludePad, effectiveEllipsize,
6797                                ellipsisWidth);
6798                    }
6799                }
6800            }
6801        }
6802        if (result == null) {
6803            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6804                    0, mTransformed.length(), mTextPaint, wantWidth)
6805                    .setAlignment(alignment)
6806                    .setTextDirection(mTextDir)
6807                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6808                    .setIncludePad(mIncludePad)
6809                    .setBreakStrategy(mBreakStrategy)
6810                    .setHyphenationFrequency(mHyphenationFrequency);
6811            if (shouldEllipsize) {
6812                builder.setEllipsize(effectiveEllipsize)
6813                        .setEllipsizedWidth(ellipsisWidth)
6814                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6815            }
6816            // TODO: explore always setting maxLines
6817            result = builder.build();
6818        }
6819        return result;
6820    }
6821
6822    private boolean compressText(float width) {
6823        if (isHardwareAccelerated()) return false;
6824
6825        // Only compress the text if it hasn't been compressed by the previous pass
6826        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6827                mTextPaint.getTextScaleX() == 1.0f) {
6828            final float textWidth = mLayout.getLineWidth(0);
6829            final float overflow = (textWidth + 1.0f - width) / width;
6830            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6831                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6832                post(new Runnable() {
6833                    public void run() {
6834                        requestLayout();
6835                    }
6836                });
6837                return true;
6838            }
6839        }
6840
6841        return false;
6842    }
6843
6844    private static int desired(Layout layout) {
6845        int n = layout.getLineCount();
6846        CharSequence text = layout.getText();
6847        float max = 0;
6848
6849        // if any line was wrapped, we can't use it.
6850        // but it's ok for the last line not to have a newline
6851
6852        for (int i = 0; i < n - 1; i++) {
6853            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6854                return -1;
6855        }
6856
6857        for (int i = 0; i < n; i++) {
6858            max = Math.max(max, layout.getLineWidth(i));
6859        }
6860
6861        return (int) Math.ceil(max);
6862    }
6863
6864    /**
6865     * Set whether the TextView includes extra top and bottom padding to make
6866     * room for accents that go above the normal ascent and descent.
6867     * The default is true.
6868     *
6869     * @see #getIncludeFontPadding()
6870     *
6871     * @attr ref android.R.styleable#TextView_includeFontPadding
6872     */
6873    public void setIncludeFontPadding(boolean includepad) {
6874        if (mIncludePad != includepad) {
6875            mIncludePad = includepad;
6876
6877            if (mLayout != null) {
6878                nullLayouts();
6879                requestLayout();
6880                invalidate();
6881            }
6882        }
6883    }
6884
6885    /**
6886     * Gets whether the TextView includes extra top and bottom padding to make
6887     * room for accents that go above the normal ascent and descent.
6888     *
6889     * @see #setIncludeFontPadding(boolean)
6890     *
6891     * @attr ref android.R.styleable#TextView_includeFontPadding
6892     */
6893    public boolean getIncludeFontPadding() {
6894        return mIncludePad;
6895    }
6896
6897    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6898
6899    @Override
6900    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6901        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6902        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6903        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6904        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6905
6906        int width;
6907        int height;
6908
6909        BoringLayout.Metrics boring = UNKNOWN_BORING;
6910        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6911
6912        if (mTextDir == null) {
6913            mTextDir = getTextDirectionHeuristic();
6914        }
6915
6916        int des = -1;
6917        boolean fromexisting = false;
6918
6919        if (widthMode == MeasureSpec.EXACTLY) {
6920            // Parent has told us how big to be. So be it.
6921            width = widthSize;
6922        } else {
6923            if (mLayout != null && mEllipsize == null) {
6924                des = desired(mLayout);
6925            }
6926
6927            if (des < 0) {
6928                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6929                if (boring != null) {
6930                    mBoring = boring;
6931                }
6932            } else {
6933                fromexisting = true;
6934            }
6935
6936            if (boring == null || boring == UNKNOWN_BORING) {
6937                if (des < 0) {
6938                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6939                }
6940                width = des;
6941            } else {
6942                width = boring.width;
6943            }
6944
6945            final Drawables dr = mDrawables;
6946            if (dr != null) {
6947                width = Math.max(width, dr.mDrawableWidthTop);
6948                width = Math.max(width, dr.mDrawableWidthBottom);
6949            }
6950
6951            if (mHint != null) {
6952                int hintDes = -1;
6953                int hintWidth;
6954
6955                if (mHintLayout != null && mEllipsize == null) {
6956                    hintDes = desired(mHintLayout);
6957                }
6958
6959                if (hintDes < 0) {
6960                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6961                    if (hintBoring != null) {
6962                        mHintBoring = hintBoring;
6963                    }
6964                }
6965
6966                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6967                    if (hintDes < 0) {
6968                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6969                    }
6970                    hintWidth = hintDes;
6971                } else {
6972                    hintWidth = hintBoring.width;
6973                }
6974
6975                if (hintWidth > width) {
6976                    width = hintWidth;
6977                }
6978            }
6979
6980            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6981
6982            if (mMaxWidthMode == EMS) {
6983                width = Math.min(width, mMaxWidth * getLineHeight());
6984            } else {
6985                width = Math.min(width, mMaxWidth);
6986            }
6987
6988            if (mMinWidthMode == EMS) {
6989                width = Math.max(width, mMinWidth * getLineHeight());
6990            } else {
6991                width = Math.max(width, mMinWidth);
6992            }
6993
6994            // Check against our minimum width
6995            width = Math.max(width, getSuggestedMinimumWidth());
6996
6997            if (widthMode == MeasureSpec.AT_MOST) {
6998                width = Math.min(widthSize, width);
6999            }
7000        }
7001
7002        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7003        int unpaddedWidth = want;
7004
7005        if (mHorizontallyScrolling) want = VERY_WIDE;
7006
7007        int hintWant = want;
7008        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7009
7010        if (mLayout == null) {
7011            makeNewLayout(want, hintWant, boring, hintBoring,
7012                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7013        } else {
7014            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7015                    (hintWidth != hintWant) ||
7016                    (mLayout.getEllipsizedWidth() !=
7017                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7018
7019            final boolean widthChanged = (mHint == null) &&
7020                    (mEllipsize == null) &&
7021                    (want > mLayout.getWidth()) &&
7022                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7023
7024            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7025
7026            if (layoutChanged || maximumChanged) {
7027                if (!maximumChanged && widthChanged) {
7028                    mLayout.increaseWidthTo(want);
7029                } else {
7030                    makeNewLayout(want, hintWant, boring, hintBoring,
7031                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7032                }
7033            } else {
7034                // Nothing has changed
7035            }
7036        }
7037
7038        if (heightMode == MeasureSpec.EXACTLY) {
7039            // Parent has told us how big to be. So be it.
7040            height = heightSize;
7041            mDesiredHeightAtMeasure = -1;
7042        } else {
7043            int desired = getDesiredHeight();
7044
7045            height = desired;
7046            mDesiredHeightAtMeasure = desired;
7047
7048            if (heightMode == MeasureSpec.AT_MOST) {
7049                height = Math.min(desired, heightSize);
7050            }
7051        }
7052
7053        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7054        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7055            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7056        }
7057
7058        /*
7059         * We didn't let makeNewLayout() register to bring the cursor into view,
7060         * so do it here if there is any possibility that it is needed.
7061         */
7062        if (mMovement != null ||
7063            mLayout.getWidth() > unpaddedWidth ||
7064            mLayout.getHeight() > unpaddedHeight) {
7065            registerForPreDraw();
7066        } else {
7067            scrollTo(0, 0);
7068        }
7069
7070        setMeasuredDimension(width, height);
7071    }
7072
7073    private int getDesiredHeight() {
7074        return Math.max(
7075                getDesiredHeight(mLayout, true),
7076                getDesiredHeight(mHintLayout, mEllipsize != null));
7077    }
7078
7079    private int getDesiredHeight(Layout layout, boolean cap) {
7080        if (layout == null) {
7081            return 0;
7082        }
7083
7084        int linecount = layout.getLineCount();
7085        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7086        int desired = layout.getLineTop(linecount);
7087
7088        final Drawables dr = mDrawables;
7089        if (dr != null) {
7090            desired = Math.max(desired, dr.mDrawableHeightLeft);
7091            desired = Math.max(desired, dr.mDrawableHeightRight);
7092        }
7093
7094        desired += pad;
7095
7096        if (mMaxMode == LINES) {
7097            /*
7098             * Don't cap the hint to a certain number of lines.
7099             * (Do cap it, though, if we have a maximum pixel height.)
7100             */
7101            if (cap) {
7102                if (linecount > mMaximum) {
7103                    desired = layout.getLineTop(mMaximum);
7104
7105                    if (dr != null) {
7106                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7107                        desired = Math.max(desired, dr.mDrawableHeightRight);
7108                    }
7109
7110                    desired += pad;
7111                    linecount = mMaximum;
7112                }
7113            }
7114        } else {
7115            desired = Math.min(desired, mMaximum);
7116        }
7117
7118        if (mMinMode == LINES) {
7119            if (linecount < mMinimum) {
7120                desired += getLineHeight() * (mMinimum - linecount);
7121            }
7122        } else {
7123            desired = Math.max(desired, mMinimum);
7124        }
7125
7126        // Check against our minimum height
7127        desired = Math.max(desired, getSuggestedMinimumHeight());
7128
7129        return desired;
7130    }
7131
7132    /**
7133     * Check whether a change to the existing text layout requires a
7134     * new view layout.
7135     */
7136    private void checkForResize() {
7137        boolean sizeChanged = false;
7138
7139        if (mLayout != null) {
7140            // Check if our width changed
7141            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7142                sizeChanged = true;
7143                invalidate();
7144            }
7145
7146            // Check if our height changed
7147            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7148                int desiredHeight = getDesiredHeight();
7149
7150                if (desiredHeight != this.getHeight()) {
7151                    sizeChanged = true;
7152                }
7153            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7154                if (mDesiredHeightAtMeasure >= 0) {
7155                    int desiredHeight = getDesiredHeight();
7156
7157                    if (desiredHeight != mDesiredHeightAtMeasure) {
7158                        sizeChanged = true;
7159                    }
7160                }
7161            }
7162        }
7163
7164        if (sizeChanged) {
7165            requestLayout();
7166            // caller will have already invalidated
7167        }
7168    }
7169
7170    /**
7171     * Check whether entirely new text requires a new view layout
7172     * or merely a new text layout.
7173     */
7174    private void checkForRelayout() {
7175        // If we have a fixed width, we can just swap in a new text layout
7176        // if the text height stays the same or if the view height is fixed.
7177
7178        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7179                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7180                (mHint == null || mHintLayout != null) &&
7181                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7182            // Static width, so try making a new text layout.
7183
7184            int oldht = mLayout.getHeight();
7185            int want = mLayout.getWidth();
7186            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7187
7188            /*
7189             * No need to bring the text into view, since the size is not
7190             * changing (unless we do the requestLayout(), in which case it
7191             * will happen at measure).
7192             */
7193            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7194                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7195                          false);
7196
7197            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7198                // In a fixed-height view, so use our new text layout.
7199                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7200                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7201                    invalidate();
7202                    return;
7203                }
7204
7205                // Dynamic height, but height has stayed the same,
7206                // so use our new text layout.
7207                if (mLayout.getHeight() == oldht &&
7208                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7209                    invalidate();
7210                    return;
7211                }
7212            }
7213
7214            // We lose: the height has changed and we have a dynamic height.
7215            // Request a new view layout using our new text layout.
7216            requestLayout();
7217            invalidate();
7218        } else {
7219            // Dynamic width, so we have no choice but to request a new
7220            // view layout with a new text layout.
7221            nullLayouts();
7222            requestLayout();
7223            invalidate();
7224        }
7225    }
7226
7227    @Override
7228    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7229        super.onLayout(changed, left, top, right, bottom);
7230        if (mDeferScroll >= 0) {
7231            int curs = mDeferScroll;
7232            mDeferScroll = -1;
7233            bringPointIntoView(Math.min(curs, mText.length()));
7234        }
7235    }
7236
7237    private boolean isShowingHint() {
7238        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7239    }
7240
7241    /**
7242     * Returns true if anything changed.
7243     */
7244    private boolean bringTextIntoView() {
7245        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7246        int line = 0;
7247        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7248            line = layout.getLineCount() - 1;
7249        }
7250
7251        Layout.Alignment a = layout.getParagraphAlignment(line);
7252        int dir = layout.getParagraphDirection(line);
7253        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7254        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7255        int ht = layout.getHeight();
7256
7257        int scrollx, scrolly;
7258
7259        // Convert to left, center, or right alignment.
7260        if (a == Layout.Alignment.ALIGN_NORMAL) {
7261            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7262                Layout.Alignment.ALIGN_RIGHT;
7263        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7264            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7265                Layout.Alignment.ALIGN_LEFT;
7266        }
7267
7268        if (a == Layout.Alignment.ALIGN_CENTER) {
7269            /*
7270             * Keep centered if possible, or, if it is too wide to fit,
7271             * keep leading edge in view.
7272             */
7273
7274            int left = (int) Math.floor(layout.getLineLeft(line));
7275            int right = (int) Math.ceil(layout.getLineRight(line));
7276
7277            if (right - left < hspace) {
7278                scrollx = (right + left) / 2 - hspace / 2;
7279            } else {
7280                if (dir < 0) {
7281                    scrollx = right - hspace;
7282                } else {
7283                    scrollx = left;
7284                }
7285            }
7286        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7287            int right = (int) Math.ceil(layout.getLineRight(line));
7288            scrollx = right - hspace;
7289        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7290            scrollx = (int) Math.floor(layout.getLineLeft(line));
7291        }
7292
7293        if (ht < vspace) {
7294            scrolly = 0;
7295        } else {
7296            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7297                scrolly = ht - vspace;
7298            } else {
7299                scrolly = 0;
7300            }
7301        }
7302
7303        if (scrollx != mScrollX || scrolly != mScrollY) {
7304            scrollTo(scrollx, scrolly);
7305            return true;
7306        } else {
7307            return false;
7308        }
7309    }
7310
7311    /**
7312     * Move the point, specified by the offset, into the view if it is needed.
7313     * This has to be called after layout. Returns true if anything changed.
7314     */
7315    public boolean bringPointIntoView(int offset) {
7316        if (isLayoutRequested()) {
7317            mDeferScroll = offset;
7318            return false;
7319        }
7320        boolean changed = false;
7321
7322        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7323
7324        if (layout == null) return changed;
7325
7326        int line = layout.getLineForOffset(offset);
7327
7328        int grav;
7329
7330        switch (layout.getParagraphAlignment(line)) {
7331            case ALIGN_LEFT:
7332                grav = 1;
7333                break;
7334            case ALIGN_RIGHT:
7335                grav = -1;
7336                break;
7337            case ALIGN_NORMAL:
7338                grav = layout.getParagraphDirection(line);
7339                break;
7340            case ALIGN_OPPOSITE:
7341                grav = -layout.getParagraphDirection(line);
7342                break;
7343            case ALIGN_CENTER:
7344            default:
7345                grav = 0;
7346                break;
7347        }
7348
7349        // We only want to clamp the cursor to fit within the layout width
7350        // in left-to-right modes, because in a right to left alignment,
7351        // we want to scroll to keep the line-right on the screen, as other
7352        // lines are likely to have text flush with the right margin, which
7353        // we want to keep visible.
7354        // A better long-term solution would probably be to measure both
7355        // the full line and a blank-trimmed version, and, for example, use
7356        // the latter measurement for centering and right alignment, but for
7357        // the time being we only implement the cursor clamping in left to
7358        // right where it is most likely to be annoying.
7359        final boolean clamped = grav > 0;
7360        // FIXME: Is it okay to truncate this, or should we round?
7361        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7362        final int top = layout.getLineTop(line);
7363        final int bottom = layout.getLineTop(line + 1);
7364
7365        int left = (int) Math.floor(layout.getLineLeft(line));
7366        int right = (int) Math.ceil(layout.getLineRight(line));
7367        int ht = layout.getHeight();
7368
7369        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7370        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7371        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7372            // If cursor has been clamped, make sure we don't scroll.
7373            right = Math.max(x, left + hspace);
7374        }
7375
7376        int hslack = (bottom - top) / 2;
7377        int vslack = hslack;
7378
7379        if (vslack > vspace / 4)
7380            vslack = vspace / 4;
7381        if (hslack > hspace / 4)
7382            hslack = hspace / 4;
7383
7384        int hs = mScrollX;
7385        int vs = mScrollY;
7386
7387        if (top - vs < vslack)
7388            vs = top - vslack;
7389        if (bottom - vs > vspace - vslack)
7390            vs = bottom - (vspace - vslack);
7391        if (ht - vs < vspace)
7392            vs = ht - vspace;
7393        if (0 - vs > 0)
7394            vs = 0;
7395
7396        if (grav != 0) {
7397            if (x - hs < hslack) {
7398                hs = x - hslack;
7399            }
7400            if (x - hs > hspace - hslack) {
7401                hs = x - (hspace - hslack);
7402            }
7403        }
7404
7405        if (grav < 0) {
7406            if (left - hs > 0)
7407                hs = left;
7408            if (right - hs < hspace)
7409                hs = right - hspace;
7410        } else if (grav > 0) {
7411            if (right - hs < hspace)
7412                hs = right - hspace;
7413            if (left - hs > 0)
7414                hs = left;
7415        } else /* grav == 0 */ {
7416            if (right - left <= hspace) {
7417                /*
7418                 * If the entire text fits, center it exactly.
7419                 */
7420                hs = left - (hspace - (right - left)) / 2;
7421            } else if (x > right - hslack) {
7422                /*
7423                 * If we are near the right edge, keep the right edge
7424                 * at the edge of the view.
7425                 */
7426                hs = right - hspace;
7427            } else if (x < left + hslack) {
7428                /*
7429                 * If we are near the left edge, keep the left edge
7430                 * at the edge of the view.
7431                 */
7432                hs = left;
7433            } else if (left > hs) {
7434                /*
7435                 * Is there whitespace visible at the left?  Fix it if so.
7436                 */
7437                hs = left;
7438            } else if (right < hs + hspace) {
7439                /*
7440                 * Is there whitespace visible at the right?  Fix it if so.
7441                 */
7442                hs = right - hspace;
7443            } else {
7444                /*
7445                 * Otherwise, float as needed.
7446                 */
7447                if (x - hs < hslack) {
7448                    hs = x - hslack;
7449                }
7450                if (x - hs > hspace - hslack) {
7451                    hs = x - (hspace - hslack);
7452                }
7453            }
7454        }
7455
7456        if (hs != mScrollX || vs != mScrollY) {
7457            if (mScroller == null) {
7458                scrollTo(hs, vs);
7459            } else {
7460                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7461                int dx = hs - mScrollX;
7462                int dy = vs - mScrollY;
7463
7464                if (duration > ANIMATED_SCROLL_GAP) {
7465                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7466                    awakenScrollBars(mScroller.getDuration());
7467                    invalidate();
7468                } else {
7469                    if (!mScroller.isFinished()) {
7470                        mScroller.abortAnimation();
7471                    }
7472
7473                    scrollBy(dx, dy);
7474                }
7475
7476                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7477            }
7478
7479            changed = true;
7480        }
7481
7482        if (isFocused()) {
7483            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7484            // requestRectangleOnScreen() is in terms of content coordinates.
7485
7486            // The offsets here are to ensure the rectangle we are using is
7487            // within our view bounds, in case the cursor is on the far left
7488            // or right.  If it isn't withing the bounds, then this request
7489            // will be ignored.
7490            if (mTempRect == null) mTempRect = new Rect();
7491            mTempRect.set(x - 2, top, x + 2, bottom);
7492            getInterestingRect(mTempRect, line);
7493            mTempRect.offset(mScrollX, mScrollY);
7494
7495            if (requestRectangleOnScreen(mTempRect)) {
7496                changed = true;
7497            }
7498        }
7499
7500        return changed;
7501    }
7502
7503    /**
7504     * Move the cursor, if needed, so that it is at an offset that is visible
7505     * to the user.  This will not move the cursor if it represents more than
7506     * one character (a selection range).  This will only work if the
7507     * TextView contains spannable text; otherwise it will do nothing.
7508     *
7509     * @return True if the cursor was actually moved, false otherwise.
7510     */
7511    public boolean moveCursorToVisibleOffset() {
7512        if (!(mText instanceof Spannable)) {
7513            return false;
7514        }
7515        int start = getSelectionStart();
7516        int end = getSelectionEnd();
7517        if (start != end) {
7518            return false;
7519        }
7520
7521        // First: make sure the line is visible on screen:
7522
7523        int line = mLayout.getLineForOffset(start);
7524
7525        final int top = mLayout.getLineTop(line);
7526        final int bottom = mLayout.getLineTop(line + 1);
7527        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7528        int vslack = (bottom - top) / 2;
7529        if (vslack > vspace / 4)
7530            vslack = vspace / 4;
7531        final int vs = mScrollY;
7532
7533        if (top < (vs+vslack)) {
7534            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7535        } else if (bottom > (vspace+vs-vslack)) {
7536            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7537        }
7538
7539        // Next: make sure the character is visible on screen:
7540
7541        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7542        final int hs = mScrollX;
7543        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7544        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7545
7546        // line might contain bidirectional text
7547        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7548        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7549
7550        int newStart = start;
7551        if (newStart < lowChar) {
7552            newStart = lowChar;
7553        } else if (newStart > highChar) {
7554            newStart = highChar;
7555        }
7556
7557        if (newStart != start) {
7558            Selection.setSelection((Spannable)mText, newStart);
7559            return true;
7560        }
7561
7562        return false;
7563    }
7564
7565    @Override
7566    public void computeScroll() {
7567        if (mScroller != null) {
7568            if (mScroller.computeScrollOffset()) {
7569                mScrollX = mScroller.getCurrX();
7570                mScrollY = mScroller.getCurrY();
7571                invalidateParentCaches();
7572                postInvalidate();  // So we draw again
7573            }
7574        }
7575    }
7576
7577    private void getInterestingRect(Rect r, int line) {
7578        convertFromViewportToContentCoordinates(r);
7579
7580        // Rectangle can can be expanded on first and last line to take
7581        // padding into account.
7582        // TODO Take left/right padding into account too?
7583        if (line == 0) r.top -= getExtendedPaddingTop();
7584        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7585    }
7586
7587    private void convertFromViewportToContentCoordinates(Rect r) {
7588        final int horizontalOffset = viewportToContentHorizontalOffset();
7589        r.left += horizontalOffset;
7590        r.right += horizontalOffset;
7591
7592        final int verticalOffset = viewportToContentVerticalOffset();
7593        r.top += verticalOffset;
7594        r.bottom += verticalOffset;
7595    }
7596
7597    int viewportToContentHorizontalOffset() {
7598        return getCompoundPaddingLeft() - mScrollX;
7599    }
7600
7601    int viewportToContentVerticalOffset() {
7602        int offset = getExtendedPaddingTop() - mScrollY;
7603        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7604            offset += getVerticalOffset(false);
7605        }
7606        return offset;
7607    }
7608
7609    @Override
7610    public void debug(int depth) {
7611        super.debug(depth);
7612
7613        String output = debugIndent(depth);
7614        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7615                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7616                + "} ";
7617
7618        if (mText != null) {
7619
7620            output += "mText=\"" + mText + "\" ";
7621            if (mLayout != null) {
7622                output += "mLayout width=" + mLayout.getWidth()
7623                        + " height=" + mLayout.getHeight();
7624            }
7625        } else {
7626            output += "mText=NULL";
7627        }
7628        Log.d(VIEW_LOG_TAG, output);
7629    }
7630
7631    /**
7632     * Convenience for {@link Selection#getSelectionStart}.
7633     */
7634    @ViewDebug.ExportedProperty(category = "text")
7635    public int getSelectionStart() {
7636        return Selection.getSelectionStart(getText());
7637    }
7638
7639    /**
7640     * Convenience for {@link Selection#getSelectionEnd}.
7641     */
7642    @ViewDebug.ExportedProperty(category = "text")
7643    public int getSelectionEnd() {
7644        return Selection.getSelectionEnd(getText());
7645    }
7646
7647    /**
7648     * Return true iff there is a selection inside this text view.
7649     */
7650    public boolean hasSelection() {
7651        final int selectionStart = getSelectionStart();
7652        final int selectionEnd = getSelectionEnd();
7653
7654        return selectionStart >= 0 && selectionStart != selectionEnd;
7655    }
7656
7657    String getSelectedText() {
7658        if (!hasSelection()) {
7659            return null;
7660        }
7661
7662        final int start = getSelectionStart();
7663        final int end = getSelectionEnd();
7664        return String.valueOf(
7665                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7666    }
7667
7668    /**
7669     * Sets the properties of this field (lines, horizontally scrolling,
7670     * transformation method) to be for a single-line input.
7671     *
7672     * @attr ref android.R.styleable#TextView_singleLine
7673     */
7674    public void setSingleLine() {
7675        setSingleLine(true);
7676    }
7677
7678    /**
7679     * Sets the properties of this field to transform input to ALL CAPS
7680     * display. This may use a "small caps" formatting if available.
7681     * This setting will be ignored if this field is editable or selectable.
7682     *
7683     * This call replaces the current transformation method. Disabling this
7684     * will not necessarily restore the previous behavior from before this
7685     * was enabled.
7686     *
7687     * @see #setTransformationMethod(TransformationMethod)
7688     * @attr ref android.R.styleable#TextView_textAllCaps
7689     */
7690    public void setAllCaps(boolean allCaps) {
7691        if (allCaps) {
7692            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7693        } else {
7694            setTransformationMethod(null);
7695        }
7696    }
7697
7698    /**
7699     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7700     * transformation method) to be for a single-line input; if false, restores these to the default
7701     * conditions.
7702     *
7703     * Note that the default conditions are not necessarily those that were in effect prior this
7704     * method, and you may want to reset these properties to your custom values.
7705     *
7706     * @attr ref android.R.styleable#TextView_singleLine
7707     */
7708    @android.view.RemotableViewMethod
7709    public void setSingleLine(boolean singleLine) {
7710        // Could be used, but may break backward compatibility.
7711        // if (mSingleLine == singleLine) return;
7712        setInputTypeSingleLine(singleLine);
7713        applySingleLine(singleLine, true, true);
7714    }
7715
7716    /**
7717     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7718     * @param singleLine
7719     */
7720    private void setInputTypeSingleLine(boolean singleLine) {
7721        if (mEditor != null &&
7722                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7723            if (singleLine) {
7724                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7725            } else {
7726                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7727            }
7728        }
7729    }
7730
7731    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7732            boolean changeMaxLines) {
7733        mSingleLine = singleLine;
7734        if (singleLine) {
7735            setLines(1);
7736            setHorizontallyScrolling(true);
7737            if (applyTransformation) {
7738                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7739            }
7740        } else {
7741            if (changeMaxLines) {
7742                setMaxLines(Integer.MAX_VALUE);
7743            }
7744            setHorizontallyScrolling(false);
7745            if (applyTransformation) {
7746                setTransformationMethod(null);
7747            }
7748        }
7749    }
7750
7751    /**
7752     * Causes words in the text that are longer than the view is wide
7753     * to be ellipsized instead of broken in the middle.  You may also
7754     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7755     * to constrain the text to a single line.  Use <code>null</code>
7756     * to turn off ellipsizing.
7757     *
7758     * If {@link #setMaxLines} has been used to set two or more lines,
7759     * only {@link android.text.TextUtils.TruncateAt#END} and
7760     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7761     * (other ellipsizing types will not do anything).
7762     *
7763     * @attr ref android.R.styleable#TextView_ellipsize
7764     */
7765    public void setEllipsize(TextUtils.TruncateAt where) {
7766        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7767        if (mEllipsize != where) {
7768            mEllipsize = where;
7769
7770            if (mLayout != null) {
7771                nullLayouts();
7772                requestLayout();
7773                invalidate();
7774            }
7775        }
7776    }
7777
7778    /**
7779     * Sets how many times to repeat the marquee animation. Only applied if the
7780     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7781     *
7782     * @see #getMarqueeRepeatLimit()
7783     *
7784     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7785     */
7786    public void setMarqueeRepeatLimit(int marqueeLimit) {
7787        mMarqueeRepeatLimit = marqueeLimit;
7788    }
7789
7790    /**
7791     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7792     * TextView has marquee enabled.
7793     *
7794     * @return the number of times the marquee animation is repeated. -1 if the animation
7795     * repeats indefinitely
7796     *
7797     * @see #setMarqueeRepeatLimit(int)
7798     *
7799     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7800     */
7801    public int getMarqueeRepeatLimit() {
7802        return mMarqueeRepeatLimit;
7803    }
7804
7805    /**
7806     * Returns where, if anywhere, words that are longer than the view
7807     * is wide should be ellipsized.
7808     */
7809    @ViewDebug.ExportedProperty
7810    public TextUtils.TruncateAt getEllipsize() {
7811        return mEllipsize;
7812    }
7813
7814    /**
7815     * Set the TextView so that when it takes focus, all the text is
7816     * selected.
7817     *
7818     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7819     */
7820    @android.view.RemotableViewMethod
7821    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7822        createEditorIfNeeded();
7823        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7824
7825        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7826            setText(mText, BufferType.SPANNABLE);
7827        }
7828    }
7829
7830    /**
7831     * Set whether the cursor is visible. The default is true. Note that this property only
7832     * makes sense for editable TextView.
7833     *
7834     * @see #isCursorVisible()
7835     *
7836     * @attr ref android.R.styleable#TextView_cursorVisible
7837     */
7838    @android.view.RemotableViewMethod
7839    public void setCursorVisible(boolean visible) {
7840        if (visible && mEditor == null) return; // visible is the default value with no edit data
7841        createEditorIfNeeded();
7842        if (mEditor.mCursorVisible != visible) {
7843            mEditor.mCursorVisible = visible;
7844            invalidate();
7845
7846            mEditor.makeBlink();
7847
7848            // InsertionPointCursorController depends on mCursorVisible
7849            mEditor.prepareCursorControllers();
7850        }
7851    }
7852
7853    /**
7854     * @return whether or not the cursor is visible (assuming this TextView is editable)
7855     *
7856     * @see #setCursorVisible(boolean)
7857     *
7858     * @attr ref android.R.styleable#TextView_cursorVisible
7859     */
7860    public boolean isCursorVisible() {
7861        // true is the default value
7862        return mEditor == null ? true : mEditor.mCursorVisible;
7863    }
7864
7865    private boolean canMarquee() {
7866        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7867        return width > 0 && (mLayout.getLineWidth(0) > width ||
7868                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7869                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7870    }
7871
7872    private void startMarquee() {
7873        // Do not ellipsize EditText
7874        if (getKeyListener() != null) return;
7875
7876        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7877            return;
7878        }
7879
7880        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7881                getLineCount() == 1 && canMarquee()) {
7882
7883            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7884                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7885                final Layout tmp = mLayout;
7886                mLayout = mSavedMarqueeModeLayout;
7887                mSavedMarqueeModeLayout = tmp;
7888                setHorizontalFadingEdgeEnabled(true);
7889                requestLayout();
7890                invalidate();
7891            }
7892
7893            if (mMarquee == null) mMarquee = new Marquee(this);
7894            mMarquee.start(mMarqueeRepeatLimit);
7895        }
7896    }
7897
7898    private void stopMarquee() {
7899        if (mMarquee != null && !mMarquee.isStopped()) {
7900            mMarquee.stop();
7901        }
7902
7903        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7904            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7905            final Layout tmp = mSavedMarqueeModeLayout;
7906            mSavedMarqueeModeLayout = mLayout;
7907            mLayout = tmp;
7908            setHorizontalFadingEdgeEnabled(false);
7909            requestLayout();
7910            invalidate();
7911        }
7912    }
7913
7914    private void startStopMarquee(boolean start) {
7915        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7916            if (start) {
7917                startMarquee();
7918            } else {
7919                stopMarquee();
7920            }
7921        }
7922    }
7923
7924    /**
7925     * This method is called when the text is changed, in case any subclasses
7926     * would like to know.
7927     *
7928     * Within <code>text</code>, the <code>lengthAfter</code> characters
7929     * beginning at <code>start</code> have just replaced old text that had
7930     * length <code>lengthBefore</code>. It is an error to attempt to make
7931     * changes to <code>text</code> from this callback.
7932     *
7933     * @param text The text the TextView is displaying
7934     * @param start The offset of the start of the range of the text that was
7935     * modified
7936     * @param lengthBefore The length of the former text that has been replaced
7937     * @param lengthAfter The length of the replacement modified text
7938     */
7939    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7940        // intentionally empty, template pattern method can be overridden by subclasses
7941    }
7942
7943    /**
7944     * This method is called when the selection has changed, in case any
7945     * subclasses would like to know.
7946     *
7947     * @param selStart The new selection start location.
7948     * @param selEnd The new selection end location.
7949     */
7950    protected void onSelectionChanged(int selStart, int selEnd) {
7951        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7952    }
7953
7954    /**
7955     * Adds a TextWatcher to the list of those whose methods are called
7956     * whenever this TextView's text changes.
7957     * <p>
7958     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7959     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7960     * if there are any text changed listeners forces the buffer type to
7961     * Editable if it would not otherwise be and does call this method.
7962     */
7963    public void addTextChangedListener(TextWatcher watcher) {
7964        if (mListeners == null) {
7965            mListeners = new ArrayList<TextWatcher>();
7966        }
7967
7968        mListeners.add(watcher);
7969    }
7970
7971    /**
7972     * Removes the specified TextWatcher from the list of those whose
7973     * methods are called
7974     * whenever this TextView's text changes.
7975     */
7976    public void removeTextChangedListener(TextWatcher watcher) {
7977        if (mListeners != null) {
7978            int i = mListeners.indexOf(watcher);
7979
7980            if (i >= 0) {
7981                mListeners.remove(i);
7982            }
7983        }
7984    }
7985
7986    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7987        if (mListeners != null) {
7988            final ArrayList<TextWatcher> list = mListeners;
7989            final int count = list.size();
7990            for (int i = 0; i < count; i++) {
7991                list.get(i).beforeTextChanged(text, start, before, after);
7992            }
7993        }
7994
7995        // The spans that are inside or intersect the modified region no longer make sense
7996        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
7997        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
7998    }
7999
8000    // Removes all spans that are inside or actually overlap the start..end range
8001    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8002        if (!(mText instanceof Editable)) return;
8003        Editable text = (Editable) mText;
8004
8005        T[] spans = text.getSpans(start, end, type);
8006        final int length = spans.length;
8007        for (int i = 0; i < length; i++) {
8008            final int spanStart = text.getSpanStart(spans[i]);
8009            final int spanEnd = text.getSpanEnd(spans[i]);
8010            if (spanEnd == start || spanStart == end) break;
8011            text.removeSpan(spans[i]);
8012        }
8013    }
8014
8015    void removeAdjacentSuggestionSpans(final int pos) {
8016        if (!(mText instanceof Editable)) return;
8017        final Editable text = (Editable) mText;
8018
8019        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8020        final int length = spans.length;
8021        for (int i = 0; i < length; i++) {
8022            final int spanStart = text.getSpanStart(spans[i]);
8023            final int spanEnd = text.getSpanEnd(spans[i]);
8024            if (spanEnd == pos || spanStart == pos) {
8025                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8026                    text.removeSpan(spans[i]);
8027                }
8028            }
8029        }
8030    }
8031
8032    /**
8033     * Not private so it can be called from an inner class without going
8034     * through a thunk.
8035     */
8036    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8037        if (mListeners != null) {
8038            final ArrayList<TextWatcher> list = mListeners;
8039            final int count = list.size();
8040            for (int i = 0; i < count; i++) {
8041                list.get(i).onTextChanged(text, start, before, after);
8042            }
8043        }
8044
8045        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8046    }
8047
8048    /**
8049     * Not private so it can be called from an inner class without going
8050     * through a thunk.
8051     */
8052    void sendAfterTextChanged(Editable text) {
8053        if (mListeners != null) {
8054            final ArrayList<TextWatcher> list = mListeners;
8055            final int count = list.size();
8056            for (int i = 0; i < count; i++) {
8057                list.get(i).afterTextChanged(text);
8058            }
8059        }
8060        hideErrorIfUnchanged();
8061    }
8062
8063    void updateAfterEdit() {
8064        invalidate();
8065        int curs = getSelectionStart();
8066
8067        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8068            registerForPreDraw();
8069        }
8070
8071        checkForResize();
8072
8073        if (curs >= 0) {
8074            mHighlightPathBogus = true;
8075            if (mEditor != null) mEditor.makeBlink();
8076            bringPointIntoView(curs);
8077        }
8078    }
8079
8080    /**
8081     * Not private so it can be called from an inner class without going
8082     * through a thunk.
8083     */
8084    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8085        sLastCutCopyOrTextChangedTime = 0;
8086
8087        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8088        if (ims == null || ims.mBatchEditNesting == 0) {
8089            updateAfterEdit();
8090        }
8091        if (ims != null) {
8092            ims.mContentChanged = true;
8093            if (ims.mChangedStart < 0) {
8094                ims.mChangedStart = start;
8095                ims.mChangedEnd = start+before;
8096            } else {
8097                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8098                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8099            }
8100            ims.mChangedDelta += after-before;
8101        }
8102        resetErrorChangedFlag();
8103        sendOnTextChanged(buffer, start, before, after);
8104        onTextChanged(buffer, start, before, after);
8105    }
8106
8107    /**
8108     * Not private so it can be called from an inner class without going
8109     * through a thunk.
8110     */
8111    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8112        // XXX Make the start and end move together if this ends up
8113        // spending too much time invalidating.
8114
8115        boolean selChanged = false;
8116        int newSelStart=-1, newSelEnd=-1;
8117
8118        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8119
8120        if (what == Selection.SELECTION_END) {
8121            selChanged = true;
8122            newSelEnd = newStart;
8123
8124            if (oldStart >= 0 || newStart >= 0) {
8125                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8126                checkForResize();
8127                registerForPreDraw();
8128                if (mEditor != null) mEditor.makeBlink();
8129            }
8130        }
8131
8132        if (what == Selection.SELECTION_START) {
8133            selChanged = true;
8134            newSelStart = newStart;
8135
8136            if (oldStart >= 0 || newStart >= 0) {
8137                int end = Selection.getSelectionEnd(buf);
8138                invalidateCursor(end, oldStart, newStart);
8139            }
8140        }
8141
8142        if (selChanged) {
8143            mHighlightPathBogus = true;
8144            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8145
8146            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8147                if (newSelStart < 0) {
8148                    newSelStart = Selection.getSelectionStart(buf);
8149                }
8150                if (newSelEnd < 0) {
8151                    newSelEnd = Selection.getSelectionEnd(buf);
8152                }
8153                onSelectionChanged(newSelStart, newSelEnd);
8154            }
8155        }
8156
8157        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8158                what instanceof CharacterStyle) {
8159            if (ims == null || ims.mBatchEditNesting == 0) {
8160                invalidate();
8161                mHighlightPathBogus = true;
8162                checkForResize();
8163            } else {
8164                ims.mContentChanged = true;
8165            }
8166            if (mEditor != null) {
8167                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8168                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8169            }
8170        }
8171
8172        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8173            mHighlightPathBogus = true;
8174            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8175                ims.mSelectionModeChanged = true;
8176            }
8177
8178            if (Selection.getSelectionStart(buf) >= 0) {
8179                if (ims == null || ims.mBatchEditNesting == 0) {
8180                    invalidateCursor();
8181                } else {
8182                    ims.mCursorChanged = true;
8183                }
8184            }
8185        }
8186
8187        if (what instanceof ParcelableSpan) {
8188            // If this is a span that can be sent to a remote process,
8189            // the current extract editor would be interested in it.
8190            if (ims != null && ims.mExtractedTextRequest != null) {
8191                if (ims.mBatchEditNesting != 0) {
8192                    if (oldStart >= 0) {
8193                        if (ims.mChangedStart > oldStart) {
8194                            ims.mChangedStart = oldStart;
8195                        }
8196                        if (ims.mChangedStart > oldEnd) {
8197                            ims.mChangedStart = oldEnd;
8198                        }
8199                    }
8200                    if (newStart >= 0) {
8201                        if (ims.mChangedStart > newStart) {
8202                            ims.mChangedStart = newStart;
8203                        }
8204                        if (ims.mChangedStart > newEnd) {
8205                            ims.mChangedStart = newEnd;
8206                        }
8207                    }
8208                } else {
8209                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8210                            + oldStart + "-" + oldEnd + ","
8211                            + newStart + "-" + newEnd + " " + what);
8212                    ims.mContentChanged = true;
8213                }
8214            }
8215        }
8216
8217        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8218                what instanceof SpellCheckSpan) {
8219            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8220        }
8221    }
8222
8223    /**
8224     * @hide
8225     */
8226    @Override
8227    public void dispatchFinishTemporaryDetach() {
8228        mDispatchTemporaryDetach = true;
8229        super.dispatchFinishTemporaryDetach();
8230        mDispatchTemporaryDetach = false;
8231    }
8232
8233    @Override
8234    public void onStartTemporaryDetach() {
8235        super.onStartTemporaryDetach();
8236        // Only track when onStartTemporaryDetach() is called directly,
8237        // usually because this instance is an editable field in a list
8238        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8239
8240        // Tell the editor that we are temporarily detached. It can use this to preserve
8241        // selection state as needed.
8242        if (mEditor != null) mEditor.mTemporaryDetach = true;
8243    }
8244
8245    @Override
8246    public void onFinishTemporaryDetach() {
8247        super.onFinishTemporaryDetach();
8248        // Only track when onStartTemporaryDetach() is called directly,
8249        // usually because this instance is an editable field in a list
8250        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8251        if (mEditor != null) mEditor.mTemporaryDetach = false;
8252    }
8253
8254    @Override
8255    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8256        if (mTemporaryDetach) {
8257            // If we are temporarily in the detach state, then do nothing.
8258            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8259            return;
8260        }
8261
8262        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8263
8264        if (focused) {
8265            if (mText instanceof Spannable) {
8266                Spannable sp = (Spannable) mText;
8267                MetaKeyKeyListener.resetMetaState(sp);
8268            }
8269        }
8270
8271        startStopMarquee(focused);
8272
8273        if (mTransformation != null) {
8274            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8275        }
8276
8277        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8278    }
8279
8280    @Override
8281    public void onWindowFocusChanged(boolean hasWindowFocus) {
8282        super.onWindowFocusChanged(hasWindowFocus);
8283
8284        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8285
8286        startStopMarquee(hasWindowFocus);
8287    }
8288
8289    @Override
8290    protected void onVisibilityChanged(View changedView, int visibility) {
8291        super.onVisibilityChanged(changedView, visibility);
8292        if (mEditor != null && visibility != VISIBLE) {
8293            mEditor.hideCursorAndSpanControllers();
8294            stopTextActionMode();
8295        }
8296    }
8297
8298    /**
8299     * Use {@link BaseInputConnection#removeComposingSpans
8300     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8301     * state from this text view.
8302     */
8303    public void clearComposingText() {
8304        if (mText instanceof Spannable) {
8305            BaseInputConnection.removeComposingSpans((Spannable)mText);
8306        }
8307    }
8308
8309    @Override
8310    public void setSelected(boolean selected) {
8311        boolean wasSelected = isSelected();
8312
8313        super.setSelected(selected);
8314
8315        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8316            if (selected) {
8317                startMarquee();
8318            } else {
8319                stopMarquee();
8320            }
8321        }
8322    }
8323
8324    @Override
8325    public boolean onTouchEvent(MotionEvent event) {
8326        final int action = event.getActionMasked();
8327
8328        if (mEditor != null && action == MotionEvent.ACTION_DOWN) {
8329            // Detect double tap and inform the Editor.
8330            if (mFirstTouch && (SystemClock.uptimeMillis() - mLastTouchUpTime) <=
8331                    ViewConfiguration.getDoubleTapTimeout()) {
8332                mEditor.mDoubleTap = true;
8333                mFirstTouch = false;
8334            } else {
8335                mEditor.mDoubleTap = false;
8336                mFirstTouch = true;
8337            }
8338        }
8339
8340        if (action == MotionEvent.ACTION_UP) {
8341            mLastTouchUpTime = SystemClock.uptimeMillis();
8342        }
8343
8344        if (mEditor != null) {
8345            mEditor.onTouchEvent(event);
8346
8347            if (mEditor.mSelectionModifierCursorController != null &&
8348                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8349                return true;
8350            }
8351        }
8352
8353        final boolean superResult = super.onTouchEvent(event);
8354
8355        /*
8356         * Don't handle the release after a long press, because it will move the selection away from
8357         * whatever the menu action was trying to affect. If the long press should have triggered an
8358         * insertion action mode, we can now actually show it.
8359         */
8360        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8361            mEditor.mDiscardNextActionUp = false;
8362
8363            if (mEditor.mIsInsertionActionModeStartPending) {
8364                mEditor.startInsertionActionMode();
8365                mEditor.mIsInsertionActionModeStartPending = false;
8366            }
8367            return superResult;
8368        }
8369
8370        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8371                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8372
8373         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8374                && mText instanceof Spannable && mLayout != null) {
8375            boolean handled = false;
8376
8377            if (mMovement != null) {
8378                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8379            }
8380
8381            final boolean textIsSelectable = isTextSelectable();
8382            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8383                // The LinkMovementMethod which should handle taps on links has not been installed
8384                // on non editable text that support text selection.
8385                // We reproduce its behavior here to open links for these.
8386                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8387                        getSelectionEnd(), ClickableSpan.class);
8388
8389                if (links.length > 0) {
8390                    links[0].onClick(this);
8391                    handled = true;
8392                }
8393            }
8394
8395            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8396                // Show the IME, except when selecting in read-only text.
8397                final InputMethodManager imm = InputMethodManager.peekInstance();
8398                viewClicked(imm);
8399                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8400                    handled |= imm != null && imm.showSoftInput(this, 0);
8401                }
8402
8403                // The above condition ensures that the mEditor is not null
8404                mEditor.onTouchUpEvent(event);
8405
8406                handled = true;
8407            }
8408
8409            if (handled) {
8410                return true;
8411            }
8412        }
8413
8414        return superResult;
8415    }
8416
8417    @Override
8418    public boolean onGenericMotionEvent(MotionEvent event) {
8419        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8420            try {
8421                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8422                    return true;
8423                }
8424            } catch (AbstractMethodError ex) {
8425                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8426                // Ignore its absence in case third party applications implemented the
8427                // interface directly.
8428            }
8429        }
8430        return super.onGenericMotionEvent(event);
8431    }
8432
8433    /**
8434     * @return True iff this TextView contains a text that can be edited, or if this is
8435     * a selectable TextView.
8436     */
8437    boolean isTextEditable() {
8438        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8439    }
8440
8441    /**
8442     * Returns true, only while processing a touch gesture, if the initial
8443     * touch down event caused focus to move to the text view and as a result
8444     * its selection changed.  Only valid while processing the touch gesture
8445     * of interest, in an editable text view.
8446     */
8447    public boolean didTouchFocusSelect() {
8448        return mEditor != null && mEditor.mTouchFocusSelected;
8449    }
8450
8451    @Override
8452    public void cancelLongPress() {
8453        super.cancelLongPress();
8454        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8455    }
8456
8457    @Override
8458    public boolean onTrackballEvent(MotionEvent event) {
8459        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8460            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8461                return true;
8462            }
8463        }
8464
8465        return super.onTrackballEvent(event);
8466    }
8467
8468    public void setScroller(Scroller s) {
8469        mScroller = s;
8470    }
8471
8472    @Override
8473    protected float getLeftFadingEdgeStrength() {
8474        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8475                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8476            if (mMarquee != null && !mMarquee.isStopped()) {
8477                final Marquee marquee = mMarquee;
8478                if (marquee.shouldDrawLeftFade()) {
8479                    final float scroll = marquee.getScroll();
8480                    return scroll / getHorizontalFadingEdgeLength();
8481                } else {
8482                    return 0.0f;
8483                }
8484            } else if (getLineCount() == 1) {
8485                final int layoutDirection = getLayoutDirection();
8486                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8487                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8488                    case Gravity.LEFT:
8489                        return 0.0f;
8490                    case Gravity.RIGHT:
8491                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8492                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8493                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8494                    case Gravity.CENTER_HORIZONTAL:
8495                    case Gravity.FILL_HORIZONTAL:
8496                        final int textDirection = mLayout.getParagraphDirection(0);
8497                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8498                            return 0.0f;
8499                        } else {
8500                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8501                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8502                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8503                        }
8504                }
8505            }
8506        }
8507        return super.getLeftFadingEdgeStrength();
8508    }
8509
8510    @Override
8511    protected float getRightFadingEdgeStrength() {
8512        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8513                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8514            if (mMarquee != null && !mMarquee.isStopped()) {
8515                final Marquee marquee = mMarquee;
8516                final float maxFadeScroll = marquee.getMaxFadeScroll();
8517                final float scroll = marquee.getScroll();
8518                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8519            } else if (getLineCount() == 1) {
8520                final int layoutDirection = getLayoutDirection();
8521                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8522                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8523                    case Gravity.LEFT:
8524                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8525                                getCompoundPaddingRight();
8526                        final float lineWidth = mLayout.getLineWidth(0);
8527                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8528                    case Gravity.RIGHT:
8529                        return 0.0f;
8530                    case Gravity.CENTER_HORIZONTAL:
8531                    case Gravity.FILL_HORIZONTAL:
8532                        final int textDirection = mLayout.getParagraphDirection(0);
8533                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8534                            return 0.0f;
8535                        } else {
8536                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8537                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8538                                getHorizontalFadingEdgeLength();
8539                        }
8540                }
8541            }
8542        }
8543        return super.getRightFadingEdgeStrength();
8544    }
8545
8546    @Override
8547    protected int computeHorizontalScrollRange() {
8548        if (mLayout != null) {
8549            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8550                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8551        }
8552
8553        return super.computeHorizontalScrollRange();
8554    }
8555
8556    @Override
8557    protected int computeVerticalScrollRange() {
8558        if (mLayout != null)
8559            return mLayout.getHeight();
8560
8561        return super.computeVerticalScrollRange();
8562    }
8563
8564    @Override
8565    protected int computeVerticalScrollExtent() {
8566        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8567    }
8568
8569    @Override
8570    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8571        super.findViewsWithText(outViews, searched, flags);
8572        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8573                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8574            String searchedLowerCase = searched.toString().toLowerCase();
8575            String textLowerCase = mText.toString().toLowerCase();
8576            if (textLowerCase.contains(searchedLowerCase)) {
8577                outViews.add(this);
8578            }
8579        }
8580    }
8581
8582    public enum BufferType {
8583        NORMAL, SPANNABLE, EDITABLE,
8584    }
8585
8586    /**
8587     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8588     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8589     * if TextView_textColor was not set directly.
8590     *
8591     * @removed
8592     */
8593    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8594        if (attrs == null) {
8595            // Preserve behavior prior to removal of this API.
8596            throw new NullPointerException();
8597        }
8598
8599        // It's not safe to use this method from apps. The parameter 'attrs'
8600        // must have been obtained using the TextView filter array which is not
8601        // available to the SDK. As such, we grab a default TypedArray with the
8602        // right filter instead here.
8603        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8604        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8605        if (colors == null) {
8606            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8607            if (ap != 0) {
8608                final TypedArray appearance = context.obtainStyledAttributes(
8609                        ap, R.styleable.TextAppearance);
8610                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8611                appearance.recycle();
8612            }
8613        }
8614        a.recycle();
8615
8616        return colors;
8617    }
8618
8619    /**
8620     * Returns the default color from the TextView_textColor attribute from the
8621     * AttributeSet, if set, or the default color from the
8622     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8623     * TextView_textColor was not set directly.
8624     *
8625     * @removed
8626     */
8627    public static int getTextColor(Context context, TypedArray attrs, int def) {
8628        final ColorStateList colors = getTextColors(context, attrs);
8629        if (colors == null) {
8630            return def;
8631        } else {
8632            return colors.getDefaultColor();
8633        }
8634    }
8635
8636    @Override
8637    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8638        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8639            // Handle Ctrl-only shortcuts.
8640            switch (keyCode) {
8641            case KeyEvent.KEYCODE_A:
8642                if (canSelectText()) {
8643                    return onTextContextMenuItem(ID_SELECT_ALL);
8644                }
8645                break;
8646            case KeyEvent.KEYCODE_Z:
8647                if (canUndo()) {
8648                    return onTextContextMenuItem(ID_UNDO);
8649                }
8650                break;
8651            case KeyEvent.KEYCODE_X:
8652                if (canCut()) {
8653                    return onTextContextMenuItem(ID_CUT);
8654                }
8655                break;
8656            case KeyEvent.KEYCODE_C:
8657                if (canCopy()) {
8658                    return onTextContextMenuItem(ID_COPY);
8659                }
8660                break;
8661            case KeyEvent.KEYCODE_V:
8662                if (canPaste()) {
8663                    return onTextContextMenuItem(ID_PASTE);
8664                }
8665                break;
8666            }
8667        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8668            // Handle Ctrl-Shift shortcuts.
8669            switch (keyCode) {
8670                case KeyEvent.KEYCODE_Z:
8671                    if (canRedo()) {
8672                        return onTextContextMenuItem(ID_REDO);
8673                    }
8674                    break;
8675                case KeyEvent.KEYCODE_V:
8676                    if (canPaste()) {
8677                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8678                    }
8679            }
8680        }
8681        return super.onKeyShortcut(keyCode, event);
8682    }
8683
8684    /**
8685     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8686     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8687     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8688     * sufficient.
8689     */
8690    boolean canSelectText() {
8691        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8692    }
8693
8694    /**
8695     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8696     * The text must be spannable and the movement method must allow for arbitary selection.
8697     *
8698     * See also {@link #canSelectText()}.
8699     */
8700    boolean textCanBeSelected() {
8701        // prepareCursorController() relies on this method.
8702        // If you change this condition, make sure prepareCursorController is called anywhere
8703        // the value of this condition might be changed.
8704        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8705        return isTextEditable() ||
8706                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8707    }
8708
8709    private Locale getTextServicesLocale(boolean allowNullLocale) {
8710        // Start fetching the text services locale asynchronously.
8711        updateTextServicesLocaleAsync();
8712        // If !allowNullLocale and there is no cached text services locale, just return the default
8713        // locale.
8714        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8715                : mCurrentSpellCheckerLocaleCache;
8716    }
8717
8718    /**
8719     * This is a temporary method. Future versions may support multi-locale text.
8720     * Caveat: This method may not return the latest text services locale, but this should be
8721     * acceptable and it's more important to make this method asynchronous.
8722     *
8723     * @return The locale that should be used for a word iterator
8724     * in this TextView, based on the current spell checker settings,
8725     * the current IME's locale, or the system default locale.
8726     * Please note that a word iterator in this TextView is different from another word iterator
8727     * used by SpellChecker.java of TextView. This method should be used for the former.
8728     * @hide
8729     */
8730    // TODO: Support multi-locale
8731    // TODO: Update the text services locale immediately after the keyboard locale is switched
8732    // by catching intent of keyboard switch event
8733    public Locale getTextServicesLocale() {
8734        return getTextServicesLocale(false /* allowNullLocale */);
8735    }
8736
8737    /**
8738     * @return true if this TextView is specialized for showing and interacting with the extracted
8739     * text in a full-screen input method.
8740     * @hide
8741     */
8742    public boolean isInExtractedMode() {
8743        return false;
8744    }
8745
8746    /**
8747     * This is a temporary method. Future versions may support multi-locale text.
8748     * Caveat: This method may not return the latest spell checker locale, but this should be
8749     * acceptable and it's more important to make this method asynchronous.
8750     *
8751     * @return The locale that should be used for a spell checker in this TextView,
8752     * based on the current spell checker settings, the current IME's locale, or the system default
8753     * locale.
8754     * @hide
8755     */
8756    public Locale getSpellCheckerLocale() {
8757        return getTextServicesLocale(true /* allowNullLocale */);
8758    }
8759
8760    private void updateTextServicesLocaleAsync() {
8761        // AsyncTask.execute() uses a serial executor which means we don't have
8762        // to lock around updateTextServicesLocaleLocked() to prevent it from
8763        // being executed n times in parallel.
8764        AsyncTask.execute(new Runnable() {
8765            @Override
8766            public void run() {
8767                updateTextServicesLocaleLocked();
8768            }
8769        });
8770    }
8771
8772    private void updateTextServicesLocaleLocked() {
8773        final TextServicesManager textServicesManager = (TextServicesManager)
8774                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8775        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8776        final Locale locale;
8777        if (subtype != null) {
8778            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
8779        } else {
8780            locale = null;
8781        }
8782        mCurrentSpellCheckerLocaleCache = locale;
8783    }
8784
8785    void onLocaleChanged() {
8786        // Will be re-created on demand in getWordIterator with the proper new locale
8787        mEditor.mWordIterator = null;
8788    }
8789
8790    /**
8791     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8792     * Made available to achieve a consistent behavior.
8793     * @hide
8794     */
8795    public WordIterator getWordIterator() {
8796        if (mEditor != null) {
8797            return mEditor.getWordIterator();
8798        } else {
8799            return null;
8800        }
8801    }
8802
8803    /** @hide */
8804    @Override
8805    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8806        super.onPopulateAccessibilityEventInternal(event);
8807
8808        final CharSequence text = getTextForAccessibility();
8809        if (!TextUtils.isEmpty(text)) {
8810            event.getText().add(text);
8811        }
8812    }
8813
8814    /**
8815     * @return true if the user has explicitly allowed accessibility services
8816     * to speak passwords.
8817     */
8818    private boolean shouldSpeakPasswordsForAccessibility() {
8819        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8820                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8821                UserHandle.USER_CURRENT_OR_SELF) == 1);
8822    }
8823
8824    @Override
8825    public CharSequence getAccessibilityClassName() {
8826        return TextView.class.getName();
8827    }
8828
8829    @Override
8830    public void onProvideStructure(ViewStructure structure) {
8831        super.onProvideStructure(structure);
8832        final boolean isPassword = hasPasswordTransformationMethod()
8833                || isPasswordInputType(getInputType());
8834        if (!isPassword) {
8835            if (mLayout == null) {
8836                assumeLayout();
8837            }
8838            Layout layout = mLayout;
8839            final int lineCount = layout.getLineCount();
8840            if (lineCount <= 1) {
8841                // Simple case: this is a single line.
8842                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8843            } else {
8844                // Complex case: multi-line, could be scrolled or within a scroll container
8845                // so some lines are not visible.
8846                final int[] tmpCords = new int[2];
8847                getLocationInWindow(tmpCords);
8848                final int topWindowLocation = tmpCords[1];
8849                View root = this;
8850                ViewParent viewParent = getParent();
8851                while (viewParent instanceof View) {
8852                    root = (View) viewParent;
8853                    viewParent = root.getParent();
8854                }
8855                final int windowHeight = root.getHeight();
8856                final int topLine;
8857                final int bottomLine;
8858                if (topWindowLocation >= 0) {
8859                    // The top of the view is fully within its window; start text at line 0.
8860                    topLine = getLineAtCoordinateUnclamped(0);
8861                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
8862                } else {
8863                    // The top of hte window has scrolled off the top of the window; figure out
8864                    // the starting line for this.
8865                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
8866                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
8867                }
8868                // We want to return some contextual lines above/below the lines that are
8869                // actually visible.
8870                int expandedTopLine = topLine - (bottomLine-topLine)/2;
8871                if (expandedTopLine < 0) {
8872                    expandedTopLine = 0;
8873                }
8874                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
8875                if (expandedBottomLine >= lineCount) {
8876                    expandedBottomLine = lineCount-1;
8877                }
8878                // Convert lines into character offsets.
8879                int expandedTopChar = layout.getLineStart(expandedTopLine);
8880                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
8881                // Take into account selection -- if there is a selection, we need to expand
8882                // the text we are returning to include that selection.
8883                final int selStart = getSelectionStart();
8884                final int selEnd = getSelectionEnd();
8885                if (selStart < selEnd) {
8886                    if (selStart < expandedTopChar) {
8887                        expandedTopChar = selStart;
8888                    }
8889                    if (selEnd > expandedBottomChar) {
8890                        expandedBottomChar = selEnd;
8891                    }
8892                }
8893                // Get the text and trim it to the range we are reporting.
8894                CharSequence text = getText();
8895                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
8896                    text = text.subSequence(expandedTopChar, expandedBottomChar);
8897                }
8898                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
8899                final int[] lineOffsets = new int[bottomLine-topLine+1];
8900                final int[] lineBaselines = new int[bottomLine-topLine+1];
8901                final int baselineOffset = getBaselineOffset();
8902                for (int i=topLine; i<=bottomLine; i++) {
8903                    lineOffsets[i-topLine] = layout.getLineStart(i);
8904                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
8905                }
8906                structure.setTextLines(lineOffsets, lineBaselines);
8907            }
8908
8909            // Extract style information that applies to the TextView as a whole.
8910            int style = 0;
8911            int typefaceStyle = getTypefaceStyle();
8912            if ((typefaceStyle & Typeface.BOLD) != 0) {
8913                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
8914            }
8915            if ((typefaceStyle & Typeface.ITALIC) != 0) {
8916                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
8917            }
8918
8919            // Global styles can also be set via TextView.setPaintFlags().
8920            int paintFlags = mTextPaint.getFlags();
8921            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
8922                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
8923            }
8924            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
8925                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
8926            }
8927            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
8928                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
8929            }
8930
8931            // TextView does not have its own text background color. A background is either part
8932            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
8933            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
8934                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
8935        }
8936        structure.setHint(getHint());
8937    }
8938
8939    /** @hide */
8940    @Override
8941    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
8942        super.onInitializeAccessibilityEventInternal(event);
8943
8944        final boolean isPassword = hasPasswordTransformationMethod();
8945        event.setPassword(isPassword);
8946
8947        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
8948            event.setFromIndex(Selection.getSelectionStart(mText));
8949            event.setToIndex(Selection.getSelectionEnd(mText));
8950            event.setItemCount(mText.length());
8951        }
8952    }
8953
8954    /** @hide */
8955    @Override
8956    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
8957        super.onInitializeAccessibilityNodeInfoInternal(info);
8958
8959        final boolean isPassword = hasPasswordTransformationMethod();
8960        info.setPassword(isPassword);
8961        info.setText(getTextForAccessibility());
8962
8963        if (mBufferType == BufferType.EDITABLE) {
8964            info.setEditable(true);
8965        }
8966
8967        if (mEditor != null) {
8968            info.setInputType(mEditor.mInputType);
8969
8970            if (mEditor.mError != null) {
8971                info.setContentInvalid(true);
8972                info.setError(mEditor.mError);
8973            }
8974        }
8975
8976        if (!TextUtils.isEmpty(mText)) {
8977            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
8978            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
8979            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8980                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8981                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8982                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8983                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8984            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8985        }
8986
8987        if (isFocused()) {
8988            if (canCopy()) {
8989                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8990            }
8991            if (canPaste()) {
8992                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8993            }
8994            if (canCut()) {
8995                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8996            }
8997            if (canShare()) {
8998                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
8999                        ACCESSIBILITY_ACTION_SHARE,
9000                        getResources().getString(com.android.internal.R.string.share)));
9001            }
9002            if (canProcessText()) {  // also implies mEditor is not null.
9003                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9004            }
9005        }
9006
9007        // Check for known input filter types.
9008        final int numFilters = mFilters.length;
9009        for (int i = 0; i < numFilters; i++) {
9010            final InputFilter filter = mFilters[i];
9011            if (filter instanceof InputFilter.LengthFilter) {
9012                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9013            }
9014        }
9015
9016        if (!isSingleLine()) {
9017            info.setMultiLine(true);
9018        }
9019    }
9020
9021    /**
9022     * Performs an accessibility action after it has been offered to the
9023     * delegate.
9024     *
9025     * @hide
9026     */
9027    @Override
9028    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9029        if (mEditor != null
9030                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9031            return true;
9032        }
9033        switch (action) {
9034            case AccessibilityNodeInfo.ACTION_CLICK: {
9035                return performAccessibilityActionClick(arguments);
9036            }
9037            case AccessibilityNodeInfo.ACTION_COPY: {
9038                if (isFocused() && canCopy()) {
9039                    if (onTextContextMenuItem(ID_COPY)) {
9040                        return true;
9041                    }
9042                }
9043            } return false;
9044            case AccessibilityNodeInfo.ACTION_PASTE: {
9045                if (isFocused() && canPaste()) {
9046                    if (onTextContextMenuItem(ID_PASTE)) {
9047                        return true;
9048                    }
9049                }
9050            } return false;
9051            case AccessibilityNodeInfo.ACTION_CUT: {
9052                if (isFocused() && canCut()) {
9053                    if (onTextContextMenuItem(ID_CUT)) {
9054                        return true;
9055                    }
9056                }
9057            } return false;
9058            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9059                ensureIterableTextForAccessibilitySelectable();
9060                CharSequence text = getIterableTextForAccessibility();
9061                if (text == null) {
9062                    return false;
9063                }
9064                final int start = (arguments != null) ? arguments.getInt(
9065                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9066                final int end = (arguments != null) ? arguments.getInt(
9067                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9068                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9069                    // No arguments clears the selection.
9070                    if (start == end && end == -1) {
9071                        Selection.removeSelection((Spannable) text);
9072                        return true;
9073                    }
9074                    if (start >= 0 && start <= end && end <= text.length()) {
9075                        Selection.setSelection((Spannable) text, start, end);
9076                        // Make sure selection mode is engaged.
9077                        if (mEditor != null) {
9078                            mEditor.startSelectionActionMode();
9079                        }
9080                        return true;
9081                    }
9082                }
9083            } return false;
9084            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9085            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9086                ensureIterableTextForAccessibilitySelectable();
9087                return super.performAccessibilityActionInternal(action, arguments);
9088            }
9089            case ACCESSIBILITY_ACTION_SHARE: {
9090                if (isFocused() && canShare()) {
9091                    if (onTextContextMenuItem(ID_SHARE)) {
9092                        return true;
9093                    }
9094                }
9095            } return false;
9096            default: {
9097                return super.performAccessibilityActionInternal(action, arguments);
9098            }
9099        }
9100    }
9101
9102    private boolean performAccessibilityActionClick(Bundle arguments) {
9103        boolean handled = false;
9104        boolean processed = false;
9105
9106        if (!isEnabled()) {
9107            return false;
9108        }
9109
9110        if (arguments != null && arguments.containsKey(
9111                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT)) {
9112            int spanIndex = arguments.getInt(
9113                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT, -1);
9114            if (spanIndex >= 0 && hasSpannableText()) {
9115                ClickableSpan[] spans = ((Spannable) mText).getSpans(0,
9116                        mText.length(), ClickableSpan.class);
9117                if (spans != null && spans.length > spanIndex && spans[spanIndex] != null) {
9118                    // Simulate View.onTouchEvent for an ACTION_UP event
9119                    if (isFocusable() && !isFocused()) {
9120                        requestFocus();
9121                    }
9122                    spans[spanIndex].onClick(this);
9123                    handled = true;
9124                }
9125            }
9126            processed = true;
9127        }
9128
9129        if (!processed && arguments != null &&  arguments.containsKey(
9130                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT)) {
9131            int characterIndex = arguments.getInt(
9132                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT, -1);
9133            if (characterIndex >= 0 && hasSpannableText()) {
9134                ClickableSpan[] spans = ((Spannable) mText).getSpans(characterIndex,
9135                        characterIndex, ClickableSpan.class);
9136                // click only on the first span to keep parity with onTouch() implementation
9137                if (spans != null && spans.length > 0 && spans[0] != null) {
9138                    // Simulate View.onTouchEvent for an ACTION_UP event
9139                    if (isFocusable() && !isFocused()) {
9140                        requestFocus();
9141                    }
9142                    spans[0].onClick(this);
9143                    handled = true;
9144                }
9145            }
9146            processed = true;
9147        }
9148
9149        if (!processed && (isClickable() || isLongClickable())) {
9150            // Simulate View.onTouchEvent for an ACTION_UP event
9151            if (isFocusable() && !isFocused()) {
9152                requestFocus();
9153            }
9154
9155            performClick();
9156            handled = true;
9157        }
9158
9159        // Show the IME, except when selecting in read-only text.
9160        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9161                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9162            final InputMethodManager imm = InputMethodManager.peekInstance();
9163            viewClicked(imm);
9164            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9165                handled |= imm.showSoftInput(this, 0);
9166            }
9167        }
9168
9169        return handled;
9170    }
9171
9172    private boolean hasSpannableText() {
9173        return mText != null && mText instanceof Spannable;
9174    }
9175
9176    /** @hide */
9177    @Override
9178    public void sendAccessibilityEventInternal(int eventType) {
9179        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9180            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9181        }
9182
9183        // Do not send scroll events since first they are not interesting for
9184        // accessibility and second such events a generated too frequently.
9185        // For details see the implementation of bringTextIntoView().
9186        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9187            return;
9188        }
9189        super.sendAccessibilityEventInternal(eventType);
9190    }
9191
9192    /**
9193     * Returns the text that should be exposed to accessibility services.
9194     * <p>
9195     * This approximates what is displayed visually. If the user has specified
9196     * that accessibility services should speak passwords, this method will
9197     * bypass any password transformation method and return unobscured text.
9198     *
9199     * @return the text that should be exposed to accessibility services, may
9200     *         be {@code null} if no text is set
9201     */
9202    @Nullable
9203    private CharSequence getTextForAccessibility() {
9204        // If the text is empty, we must be showing the hint text.
9205        if (TextUtils.isEmpty(mText)) {
9206            return mHint;
9207        }
9208
9209        // Check whether we need to bypass the transformation
9210        // method and expose unobscured text.
9211        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9212            return mText;
9213        }
9214
9215        // Otherwise, speak whatever text is being displayed.
9216        return mTransformed;
9217    }
9218
9219    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9220            int fromIndex, int removedCount, int addedCount) {
9221        AccessibilityEvent event =
9222                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9223        event.setFromIndex(fromIndex);
9224        event.setRemovedCount(removedCount);
9225        event.setAddedCount(addedCount);
9226        event.setBeforeText(beforeText);
9227        sendAccessibilityEventUnchecked(event);
9228    }
9229
9230    /**
9231     * Returns whether this text view is a current input method target.  The
9232     * default implementation just checks with {@link InputMethodManager}.
9233     */
9234    public boolean isInputMethodTarget() {
9235        InputMethodManager imm = InputMethodManager.peekInstance();
9236        return imm != null && imm.isActive(this);
9237    }
9238
9239    static final int ID_SELECT_ALL = android.R.id.selectAll;
9240    static final int ID_UNDO = android.R.id.undo;
9241    static final int ID_REDO = android.R.id.redo;
9242    static final int ID_CUT = android.R.id.cut;
9243    static final int ID_COPY = android.R.id.copy;
9244    static final int ID_PASTE = android.R.id.paste;
9245    static final int ID_SHARE = android.R.id.shareText;
9246    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9247    static final int ID_REPLACE = android.R.id.replaceText;
9248
9249    /**
9250     * Called when a context menu option for the text view is selected.  Currently
9251     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9252     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9253     *
9254     * @return true if the context menu item action was performed.
9255     */
9256    public boolean onTextContextMenuItem(int id) {
9257        int min = 0;
9258        int max = mText.length();
9259
9260        if (isFocused()) {
9261            final int selStart = getSelectionStart();
9262            final int selEnd = getSelectionEnd();
9263
9264            min = Math.max(0, Math.min(selStart, selEnd));
9265            max = Math.max(0, Math.max(selStart, selEnd));
9266        }
9267
9268        switch (id) {
9269            case ID_SELECT_ALL:
9270                // This starts an action mode if triggered from another action mode. Text is
9271                // highlighted, so that it can be bulk edited, like selectAllOnFocus does. Returns
9272                // true even if text is empty.
9273                boolean shouldRestartActionMode =
9274                        mEditor != null && mEditor.mTextActionMode != null;
9275                stopTextActionMode();
9276                selectAllText();
9277                if (shouldRestartActionMode) {
9278                    mEditor.startSelectionActionMode();
9279                }
9280                return true;
9281
9282            case ID_UNDO:
9283                if (mEditor != null) {
9284                    mEditor.undo();
9285                }
9286                return true;  // Returns true even if nothing was undone.
9287
9288            case ID_REDO:
9289                if (mEditor != null) {
9290                    mEditor.redo();
9291                }
9292                return true;  // Returns true even if nothing was undone.
9293
9294            case ID_PASTE:
9295                paste(min, max, true /* withFormatting */);
9296                return true;
9297
9298            case ID_PASTE_AS_PLAIN_TEXT:
9299                paste(min, max, false /* withFormatting */);
9300                return true;
9301
9302            case ID_CUT:
9303                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9304                deleteText_internal(min, max);
9305                stopTextActionMode();
9306                return true;
9307
9308            case ID_COPY:
9309                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9310                stopTextActionMode();
9311                return true;
9312
9313            case ID_REPLACE:
9314                if (mEditor != null) {
9315                    mEditor.replace();
9316                }
9317                return true;
9318
9319            case ID_SHARE:
9320                shareSelectedText();
9321                return true;
9322        }
9323        return false;
9324    }
9325
9326    CharSequence getTransformedText(int start, int end) {
9327        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9328    }
9329
9330    @Override
9331    public boolean performLongClick() {
9332        boolean handled = false;
9333
9334        if (super.performLongClick()) {
9335            handled = true;
9336        }
9337
9338        if (mEditor != null) {
9339            handled |= mEditor.performLongClick(handled);
9340        }
9341
9342        if (handled) {
9343            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9344            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9345        }
9346
9347        return handled;
9348    }
9349
9350    @Override
9351    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9352        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9353        if (mEditor != null) {
9354            mEditor.onScrollChanged();
9355        }
9356    }
9357
9358    /**
9359     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9360     * by the IME or by the spell checker as the user types. This is done by adding
9361     * {@link SuggestionSpan}s to the text.
9362     *
9363     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9364     * user asks for them on these parts of the text. This value depends on the inputType of this
9365     * TextView.
9366     *
9367     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9368     *
9369     * In addition, the type variation must be one of
9370     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9371     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9372     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9373     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9374     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9375     *
9376     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9377     *
9378     * @return true if the suggestions popup window is enabled, based on the inputType.
9379     */
9380    public boolean isSuggestionsEnabled() {
9381        if (mEditor == null) return false;
9382        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9383            return false;
9384        }
9385        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9386
9387        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9388        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9389                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9390                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9391                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9392                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9393    }
9394
9395    /**
9396     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9397     * selection is initiated in this View.
9398     *
9399     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9400     * Paste, Replace and Share actions, depending on what this View supports.
9401     *
9402     * <p>A custom implementation can add new entries in the default menu in its
9403     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9404     * method. The default actions can also be removed from the menu using
9405     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9406     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9407     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9408     *
9409     * <p>Returning false from
9410     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9411     * will prevent the action mode from being started.
9412     *
9413     * <p>Action click events should be handled by the custom implementation of
9414     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9415     * android.view.MenuItem)}.
9416     *
9417     * <p>Note that text selection mode is not started when a TextView receives focus and the
9418     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9419     * that case, to allow for quick replacement.
9420     */
9421    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9422        createEditorIfNeeded();
9423        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9424    }
9425
9426    /**
9427     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9428     *
9429     * @return The current custom selection callback.
9430     */
9431    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9432        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9433    }
9434
9435    /**
9436     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9437     * insertion is initiated in this View.
9438     * The standard implementation populates the menu with a subset of Select All,
9439     * Paste and Replace actions, depending on what this View supports.
9440     *
9441     * <p>A custom implementation can add new entries in the default menu in its
9442     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9443     * android.view.Menu)} method. The default actions can also be removed from the menu using
9444     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9445     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9446     *
9447     * <p>Returning false from
9448     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9449     * android.view.Menu)} will prevent the action mode from being started.</p>
9450     *
9451     * <p>Action click events should be handled by the custom implementation of
9452     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9453     * android.view.MenuItem)}.</p>
9454     *
9455     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9456     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9457     */
9458    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9459        createEditorIfNeeded();
9460        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9461    }
9462
9463    /**
9464     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9465     *
9466     * @return The current custom insertion callback.
9467     */
9468    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9469        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9470    }
9471
9472    /**
9473     * @hide
9474     */
9475    protected void stopTextActionMode() {
9476        if (mEditor != null) {
9477            mEditor.stopTextActionMode();
9478        }
9479    }
9480
9481    boolean canUndo() {
9482        return mEditor != null && mEditor.canUndo();
9483    }
9484
9485    boolean canRedo() {
9486        return mEditor != null && mEditor.canRedo();
9487    }
9488
9489    boolean canCut() {
9490        if (hasPasswordTransformationMethod()) {
9491            return false;
9492        }
9493
9494        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9495                mEditor.mKeyListener != null) {
9496            return true;
9497        }
9498
9499        return false;
9500    }
9501
9502    boolean canCopy() {
9503        if (hasPasswordTransformationMethod()) {
9504            return false;
9505        }
9506
9507        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9508            return true;
9509        }
9510
9511        return false;
9512    }
9513
9514    boolean canShare() {
9515        return canCopy();
9516    }
9517
9518    boolean canPaste() {
9519        return (mText instanceof Editable &&
9520                mEditor != null && mEditor.mKeyListener != null &&
9521                getSelectionStart() >= 0 &&
9522                getSelectionEnd() >= 0 &&
9523                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9524                hasPrimaryClip());
9525    }
9526
9527    boolean canProcessText() {
9528        if (!getContext().canStartActivityForResult() || getId() == View.NO_ID
9529                || hasPasswordTransformationMethod()) {
9530            return false;
9531        }
9532
9533        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9534            return true;
9535        }
9536
9537        return false;
9538    }
9539
9540    boolean canSelectAllText() {
9541        return canSelectText() && !hasPasswordTransformationMethod()
9542                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9543    }
9544
9545    boolean selectAllText() {
9546        // Need to hide insert point cursor controller before settings selection, otherwise insert
9547        // point cursor controller obtains cursor update event and update cursor with cancelling
9548        // selection.
9549        if (mEditor != null) {
9550            mEditor.hideInsertionPointCursorController();
9551        }
9552        final int length = mText.length();
9553        Selection.setSelection((Spannable) mText, 0, length);
9554        return length > 0;
9555    }
9556
9557    void replaceSelectionWithText(CharSequence text) {
9558        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9559    }
9560
9561    /**
9562     * Paste clipboard content between min and max positions.
9563     */
9564    private void paste(int min, int max, boolean withFormatting) {
9565        ClipboardManager clipboard =
9566            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9567        ClipData clip = clipboard.getPrimaryClip();
9568        if (clip != null) {
9569            boolean didFirst = false;
9570            for (int i=0; i<clip.getItemCount(); i++) {
9571                final CharSequence paste;
9572                if (withFormatting) {
9573                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9574                } else {
9575                    // Get an item as text and remove all spans by toString().
9576                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9577                    paste = (text instanceof Spanned) ? text.toString() : text;
9578                }
9579                if (paste != null) {
9580                    if (!didFirst) {
9581                        Selection.setSelection((Spannable) mText, max);
9582                        ((Editable) mText).replace(min, max, paste);
9583                        didFirst = true;
9584                    } else {
9585                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9586                        ((Editable) mText).insert(getSelectionEnd(), paste);
9587                    }
9588                }
9589            }
9590            stopTextActionMode();
9591            sLastCutCopyOrTextChangedTime = 0;
9592        }
9593    }
9594
9595    private void shareSelectedText() {
9596        String selectedText = getSelectedText();
9597        if (selectedText != null && !selectedText.isEmpty()) {
9598            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9599            sharingIntent.setType("text/plain");
9600            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9601            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9602            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9603            stopTextActionMode();
9604        }
9605    }
9606
9607    private void setPrimaryClip(ClipData clip) {
9608        ClipboardManager clipboard = (ClipboardManager) getContext().
9609                getSystemService(Context.CLIPBOARD_SERVICE);
9610        clipboard.setPrimaryClip(clip);
9611        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9612    }
9613
9614    /**
9615     * Get the character offset closest to the specified absolute position. A typical use case is to
9616     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9617     *
9618     * @param x The horizontal absolute position of a point on screen
9619     * @param y The vertical absolute position of a point on screen
9620     * @return the character offset for the character whose position is closest to the specified
9621     *  position. Returns -1 if there is no layout.
9622     */
9623    public int getOffsetForPosition(float x, float y) {
9624        if (getLayout() == null) return -1;
9625        final int line = getLineAtCoordinate(y);
9626        final int offset = getOffsetAtCoordinate(line, x);
9627        return offset;
9628    }
9629
9630    float convertToLocalHorizontalCoordinate(float x) {
9631        x -= getTotalPaddingLeft();
9632        // Clamp the position to inside of the view.
9633        x = Math.max(0.0f, x);
9634        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9635        x += getScrollX();
9636        return x;
9637    }
9638
9639    int getLineAtCoordinate(float y) {
9640        y -= getTotalPaddingTop();
9641        // Clamp the position to inside of the view.
9642        y = Math.max(0.0f, y);
9643        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9644        y += getScrollY();
9645        return getLayout().getLineForVertical((int) y);
9646    }
9647
9648    int getLineAtCoordinateUnclamped(float y) {
9649        y -= getTotalPaddingTop();
9650        y += getScrollY();
9651        return getLayout().getLineForVertical((int) y);
9652    }
9653
9654    int getOffsetAtCoordinate(int line, float x) {
9655        x = convertToLocalHorizontalCoordinate(x);
9656        return getLayout().getOffsetForHorizontal(line, x);
9657    }
9658
9659    @Override
9660    public boolean onDragEvent(DragEvent event) {
9661        switch (event.getAction()) {
9662            case DragEvent.ACTION_DRAG_STARTED:
9663                return mEditor != null && mEditor.hasInsertionController();
9664
9665            case DragEvent.ACTION_DRAG_ENTERED:
9666                TextView.this.requestFocus();
9667                return true;
9668
9669            case DragEvent.ACTION_DRAG_LOCATION:
9670                final int offset = getOffsetForPosition(event.getX(), event.getY());
9671                Selection.setSelection((Spannable)mText, offset);
9672                return true;
9673
9674            case DragEvent.ACTION_DROP:
9675                if (mEditor != null) mEditor.onDrop(event);
9676                return true;
9677
9678            case DragEvent.ACTION_DRAG_ENDED:
9679            case DragEvent.ACTION_DRAG_EXITED:
9680            default:
9681                return true;
9682        }
9683    }
9684
9685    boolean isInBatchEditMode() {
9686        if (mEditor == null) return false;
9687        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9688        if (ims != null) {
9689            return ims.mBatchEditNesting > 0;
9690        }
9691        return mEditor.mInBatchEditControllers;
9692    }
9693
9694    @Override
9695    public void onRtlPropertiesChanged(int layoutDirection) {
9696        super.onRtlPropertiesChanged(layoutDirection);
9697
9698        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9699        if (mTextDir != newTextDir) {
9700            mTextDir = newTextDir;
9701            if (mLayout != null) {
9702                checkForRelayout();
9703            }
9704        }
9705    }
9706
9707    TextDirectionHeuristic getTextDirectionHeuristic() {
9708        if (hasPasswordTransformationMethod()) {
9709            // passwords fields should be LTR
9710            return TextDirectionHeuristics.LTR;
9711        }
9712
9713        // Always need to resolve layout direction first
9714        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9715
9716        // Now, we can select the heuristic
9717        switch (getTextDirection()) {
9718            default:
9719            case TEXT_DIRECTION_FIRST_STRONG:
9720                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9721                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9722            case TEXT_DIRECTION_ANY_RTL:
9723                return TextDirectionHeuristics.ANYRTL_LTR;
9724            case TEXT_DIRECTION_LTR:
9725                return TextDirectionHeuristics.LTR;
9726            case TEXT_DIRECTION_RTL:
9727                return TextDirectionHeuristics.RTL;
9728            case TEXT_DIRECTION_LOCALE:
9729                return TextDirectionHeuristics.LOCALE;
9730            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9731                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9732            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9733                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9734        }
9735    }
9736
9737    /**
9738     * @hide
9739     */
9740    @Override
9741    public void onResolveDrawables(int layoutDirection) {
9742        // No need to resolve twice
9743        if (mLastLayoutDirection == layoutDirection) {
9744            return;
9745        }
9746        mLastLayoutDirection = layoutDirection;
9747
9748        // Resolve drawables
9749        if (mDrawables != null) {
9750            mDrawables.resolveWithLayoutDirection(layoutDirection);
9751        }
9752    }
9753
9754    /**
9755     * @hide
9756     */
9757    protected void resetResolvedDrawables() {
9758        super.resetResolvedDrawables();
9759        mLastLayoutDirection = -1;
9760    }
9761
9762    /**
9763     * @hide
9764     */
9765    protected void viewClicked(InputMethodManager imm) {
9766        if (imm != null) {
9767            imm.viewClicked(this);
9768        }
9769    }
9770
9771    /**
9772     * Deletes the range of text [start, end[.
9773     * @hide
9774     */
9775    protected void deleteText_internal(int start, int end) {
9776        ((Editable) mText).delete(start, end);
9777    }
9778
9779    /**
9780     * Replaces the range of text [start, end[ by replacement text
9781     * @hide
9782     */
9783    protected void replaceText_internal(int start, int end, CharSequence text) {
9784        ((Editable) mText).replace(start, end, text);
9785    }
9786
9787    /**
9788     * Sets a span on the specified range of text
9789     * @hide
9790     */
9791    protected void setSpan_internal(Object span, int start, int end, int flags) {
9792        ((Editable) mText).setSpan(span, start, end, flags);
9793    }
9794
9795    /**
9796     * Moves the cursor to the specified offset position in text
9797     * @hide
9798     */
9799    protected void setCursorPosition_internal(int start, int end) {
9800        Selection.setSelection(((Editable) mText), start, end);
9801    }
9802
9803    /**
9804     * An Editor should be created as soon as any of the editable-specific fields (grouped
9805     * inside the Editor object) is assigned to a non-default value.
9806     * This method will create the Editor if needed.
9807     *
9808     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9809     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9810     * Editor for backward compatibility, as soon as one of these fields is assigned.
9811     *
9812     * Also note that for performance reasons, the mEditor is created when needed, but not
9813     * reset when no more edit-specific fields are needed.
9814     */
9815    private void createEditorIfNeeded() {
9816        if (mEditor == null) {
9817            mEditor = new Editor(this);
9818        }
9819    }
9820
9821    /**
9822     * @hide
9823     */
9824    @Override
9825    public CharSequence getIterableTextForAccessibility() {
9826        return mText;
9827    }
9828
9829    private void ensureIterableTextForAccessibilitySelectable() {
9830        if (!(mText instanceof Spannable)) {
9831            setText(mText, BufferType.SPANNABLE);
9832        }
9833    }
9834
9835    /**
9836     * @hide
9837     */
9838    @Override
9839    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9840        switch (granularity) {
9841            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9842                Spannable text = (Spannable) getIterableTextForAccessibility();
9843                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9844                    AccessibilityIterators.LineTextSegmentIterator iterator =
9845                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9846                    iterator.initialize(text, getLayout());
9847                    return iterator;
9848                }
9849            } break;
9850            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9851                Spannable text = (Spannable) getIterableTextForAccessibility();
9852                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9853                    AccessibilityIterators.PageTextSegmentIterator iterator =
9854                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9855                    iterator.initialize(this);
9856                    return iterator;
9857                }
9858            } break;
9859        }
9860        return super.getIteratorForGranularity(granularity);
9861    }
9862
9863    /**
9864     * @hide
9865     */
9866    @Override
9867    public int getAccessibilitySelectionStart() {
9868        return getSelectionStart();
9869    }
9870
9871    /**
9872     * @hide
9873     */
9874    public boolean isAccessibilitySelectionExtendable() {
9875        return true;
9876    }
9877
9878    /**
9879     * @hide
9880     */
9881    @Override
9882    public int getAccessibilitySelectionEnd() {
9883        return getSelectionEnd();
9884    }
9885
9886    /**
9887     * @hide
9888     */
9889    @Override
9890    public void setAccessibilitySelection(int start, int end) {
9891        if (getAccessibilitySelectionStart() == start
9892                && getAccessibilitySelectionEnd() == end) {
9893            return;
9894        }
9895        // Hide all selection controllers used for adjusting selection
9896        // since we are doing so explicitlty by other means and these
9897        // controllers interact with how selection behaves.
9898        if (mEditor != null) {
9899            mEditor.hideCursorAndSpanControllers();
9900            mEditor.stopTextActionMode();
9901        }
9902        CharSequence text = getIterableTextForAccessibility();
9903        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9904            Selection.setSelection((Spannable) text, start, end);
9905        } else {
9906            Selection.removeSelection((Spannable) text);
9907        }
9908    }
9909
9910    /** @hide */
9911    @Override
9912    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
9913        super.encodeProperties(stream);
9914
9915        TruncateAt ellipsize = getEllipsize();
9916        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
9917        stream.addProperty("text:textSize", getTextSize());
9918        stream.addProperty("text:scaledTextSize", getScaledTextSize());
9919        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
9920        stream.addProperty("text:selectionStart", getSelectionStart());
9921        stream.addProperty("text:selectionEnd", getSelectionEnd());
9922        stream.addProperty("text:curTextColor", mCurTextColor);
9923        stream.addProperty("text:text", mText == null ? null : mText.toString());
9924        stream.addProperty("text:gravity", mGravity);
9925    }
9926
9927    /**
9928     * User interface state that is stored by TextView for implementing
9929     * {@link View#onSaveInstanceState}.
9930     */
9931    public static class SavedState extends BaseSavedState {
9932        int selStart;
9933        int selEnd;
9934        CharSequence text;
9935        boolean frozenWithFocus;
9936        CharSequence error;
9937        ParcelableParcel editorState;  // Optional state from Editor.
9938
9939        SavedState(Parcelable superState) {
9940            super(superState);
9941        }
9942
9943        @Override
9944        public void writeToParcel(Parcel out, int flags) {
9945            super.writeToParcel(out, flags);
9946            out.writeInt(selStart);
9947            out.writeInt(selEnd);
9948            out.writeInt(frozenWithFocus ? 1 : 0);
9949            TextUtils.writeToParcel(text, out, flags);
9950
9951            if (error == null) {
9952                out.writeInt(0);
9953            } else {
9954                out.writeInt(1);
9955                TextUtils.writeToParcel(error, out, flags);
9956            }
9957
9958            if (editorState == null) {
9959                out.writeInt(0);
9960            } else {
9961                out.writeInt(1);
9962                editorState.writeToParcel(out, flags);
9963            }
9964        }
9965
9966        @Override
9967        public String toString() {
9968            String str = "TextView.SavedState{"
9969                    + Integer.toHexString(System.identityHashCode(this))
9970                    + " start=" + selStart + " end=" + selEnd;
9971            if (text != null) {
9972                str += " text=" + text;
9973            }
9974            return str + "}";
9975        }
9976
9977        @SuppressWarnings("hiding")
9978        public static final Parcelable.Creator<SavedState> CREATOR
9979                = new Parcelable.Creator<SavedState>() {
9980            public SavedState createFromParcel(Parcel in) {
9981                return new SavedState(in);
9982            }
9983
9984            public SavedState[] newArray(int size) {
9985                return new SavedState[size];
9986            }
9987        };
9988
9989        private SavedState(Parcel in) {
9990            super(in);
9991            selStart = in.readInt();
9992            selEnd = in.readInt();
9993            frozenWithFocus = (in.readInt() != 0);
9994            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9995
9996            if (in.readInt() != 0) {
9997                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9998            }
9999
10000            if (in.readInt() != 0) {
10001                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10002            }
10003        }
10004    }
10005
10006    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10007        private char[] mChars;
10008        private int mStart, mLength;
10009
10010        public CharWrapper(char[] chars, int start, int len) {
10011            mChars = chars;
10012            mStart = start;
10013            mLength = len;
10014        }
10015
10016        /* package */ void set(char[] chars, int start, int len) {
10017            mChars = chars;
10018            mStart = start;
10019            mLength = len;
10020        }
10021
10022        public int length() {
10023            return mLength;
10024        }
10025
10026        public char charAt(int off) {
10027            return mChars[off + mStart];
10028        }
10029
10030        @Override
10031        public String toString() {
10032            return new String(mChars, mStart, mLength);
10033        }
10034
10035        public CharSequence subSequence(int start, int end) {
10036            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10037                throw new IndexOutOfBoundsException(start + ", " + end);
10038            }
10039
10040            return new String(mChars, start + mStart, end - start);
10041        }
10042
10043        public void getChars(int start, int end, char[] buf, int off) {
10044            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10045                throw new IndexOutOfBoundsException(start + ", " + end);
10046            }
10047
10048            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10049        }
10050
10051        public void drawText(Canvas c, int start, int end,
10052                             float x, float y, Paint p) {
10053            c.drawText(mChars, start + mStart, end - start, x, y, p);
10054        }
10055
10056        public void drawTextRun(Canvas c, int start, int end,
10057                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10058            int count = end - start;
10059            int contextCount = contextEnd - contextStart;
10060            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10061                    contextCount, x, y, isRtl, p);
10062        }
10063
10064        public float measureText(int start, int end, Paint p) {
10065            return p.measureText(mChars, start + mStart, end - start);
10066        }
10067
10068        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10069            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10070        }
10071
10072        public float getTextRunAdvances(int start, int end, int contextStart,
10073                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10074                Paint p) {
10075            int count = end - start;
10076            int contextCount = contextEnd - contextStart;
10077            return p.getTextRunAdvances(mChars, start + mStart, count,
10078                    contextStart + mStart, contextCount, isRtl, advances,
10079                    advancesIndex);
10080        }
10081
10082        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10083                int offset, int cursorOpt, Paint p) {
10084            int contextCount = contextEnd - contextStart;
10085            return p.getTextRunCursor(mChars, contextStart + mStart,
10086                    contextCount, dir, offset + mStart, cursorOpt);
10087        }
10088    }
10089
10090    private static final class Marquee {
10091        // TODO: Add an option to configure this
10092        private static final float MARQUEE_DELTA_MAX = 0.07f;
10093        private static final int MARQUEE_DELAY = 1200;
10094        private static final int MARQUEE_DP_PER_SECOND = 30;
10095
10096        private static final byte MARQUEE_STOPPED = 0x0;
10097        private static final byte MARQUEE_STARTING = 0x1;
10098        private static final byte MARQUEE_RUNNING = 0x2;
10099
10100        private final WeakReference<TextView> mView;
10101        private final Choreographer mChoreographer;
10102
10103        private byte mStatus = MARQUEE_STOPPED;
10104        private final float mPixelsPerSecond;
10105        private float mMaxScroll;
10106        private float mMaxFadeScroll;
10107        private float mGhostStart;
10108        private float mGhostOffset;
10109        private float mFadeStop;
10110        private int mRepeatLimit;
10111
10112        private float mScroll;
10113        private long mLastAnimationMs;
10114
10115        Marquee(TextView v) {
10116            final float density = v.getContext().getResources().getDisplayMetrics().density;
10117            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10118            mView = new WeakReference<TextView>(v);
10119            mChoreographer = Choreographer.getInstance();
10120        }
10121
10122        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10123            @Override
10124            public void doFrame(long frameTimeNanos) {
10125                tick();
10126            }
10127        };
10128
10129        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10130            @Override
10131            public void doFrame(long frameTimeNanos) {
10132                mStatus = MARQUEE_RUNNING;
10133                mLastAnimationMs = mChoreographer.getFrameTime();
10134                tick();
10135            }
10136        };
10137
10138        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10139            @Override
10140            public void doFrame(long frameTimeNanos) {
10141                if (mStatus == MARQUEE_RUNNING) {
10142                    if (mRepeatLimit >= 0) {
10143                        mRepeatLimit--;
10144                    }
10145                    start(mRepeatLimit);
10146                }
10147            }
10148        };
10149
10150        void tick() {
10151            if (mStatus != MARQUEE_RUNNING) {
10152                return;
10153            }
10154
10155            mChoreographer.removeFrameCallback(mTickCallback);
10156
10157            final TextView textView = mView.get();
10158            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10159                long currentMs = mChoreographer.getFrameTime();
10160                long deltaMs = currentMs - mLastAnimationMs;
10161                mLastAnimationMs = currentMs;
10162                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10163                mScroll += deltaPx;
10164                if (mScroll > mMaxScroll) {
10165                    mScroll = mMaxScroll;
10166                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10167                } else {
10168                    mChoreographer.postFrameCallback(mTickCallback);
10169                }
10170                textView.invalidate();
10171            }
10172        }
10173
10174        void stop() {
10175            mStatus = MARQUEE_STOPPED;
10176            mChoreographer.removeFrameCallback(mStartCallback);
10177            mChoreographer.removeFrameCallback(mRestartCallback);
10178            mChoreographer.removeFrameCallback(mTickCallback);
10179            resetScroll();
10180        }
10181
10182        private void resetScroll() {
10183            mScroll = 0.0f;
10184            final TextView textView = mView.get();
10185            if (textView != null) textView.invalidate();
10186        }
10187
10188        void start(int repeatLimit) {
10189            if (repeatLimit == 0) {
10190                stop();
10191                return;
10192            }
10193            mRepeatLimit = repeatLimit;
10194            final TextView textView = mView.get();
10195            if (textView != null && textView.mLayout != null) {
10196                mStatus = MARQUEE_STARTING;
10197                mScroll = 0.0f;
10198                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10199                        textView.getCompoundPaddingRight();
10200                final float lineWidth = textView.mLayout.getLineWidth(0);
10201                final float gap = textWidth / 3.0f;
10202                mGhostStart = lineWidth - textWidth + gap;
10203                mMaxScroll = mGhostStart + textWidth;
10204                mGhostOffset = lineWidth + gap;
10205                mFadeStop = lineWidth + textWidth / 6.0f;
10206                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10207
10208                textView.invalidate();
10209                mChoreographer.postFrameCallback(mStartCallback);
10210            }
10211        }
10212
10213        float getGhostOffset() {
10214            return mGhostOffset;
10215        }
10216
10217        float getScroll() {
10218            return mScroll;
10219        }
10220
10221        float getMaxFadeScroll() {
10222            return mMaxFadeScroll;
10223        }
10224
10225        boolean shouldDrawLeftFade() {
10226            return mScroll <= mFadeStop;
10227        }
10228
10229        boolean shouldDrawGhost() {
10230            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10231        }
10232
10233        boolean isRunning() {
10234            return mStatus == MARQUEE_RUNNING;
10235        }
10236
10237        boolean isStopped() {
10238            return mStatus == MARQUEE_STOPPED;
10239        }
10240    }
10241
10242    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10243
10244        private CharSequence mBeforeText;
10245
10246        public void beforeTextChanged(CharSequence buffer, int start,
10247                                      int before, int after) {
10248            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10249                    + " before=" + before + " after=" + after + ": " + buffer);
10250
10251            if (AccessibilityManager.getInstance(mContext).isEnabled()
10252                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10253                            || shouldSpeakPasswordsForAccessibility())) {
10254                mBeforeText = buffer.toString();
10255            }
10256
10257            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10258        }
10259
10260        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10261            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10262                    + " before=" + before + " after=" + after + ": " + buffer);
10263            TextView.this.handleTextChanged(buffer, start, before, after);
10264
10265            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10266                    (isFocused() || isSelected() && isShown())) {
10267                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10268                mBeforeText = null;
10269            }
10270        }
10271
10272        public void afterTextChanged(Editable buffer) {
10273            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10274            TextView.this.sendAfterTextChanged(buffer);
10275
10276            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10277                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10278            }
10279        }
10280
10281        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10282            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10283                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10284            TextView.this.spanChange(buf, what, s, st, e, en);
10285        }
10286
10287        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10288            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10289                    + " what=" + what + ": " + buf);
10290            TextView.this.spanChange(buf, what, -1, s, -1, e);
10291        }
10292
10293        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10294            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10295                    + " what=" + what + ": " + buf);
10296            TextView.this.spanChange(buf, what, s, -1, e, -1);
10297        }
10298    }
10299}
10300