TextView.java revision b1891b3fc9d07ef766978f0a39c382b217a529e0 
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.StringRes;
25import android.annotation.StyleRes;
26import android.annotation.XmlRes;
27import android.app.Activity;
28import android.app.AssistStructure;
29import android.content.ClipData;
30import android.content.ClipboardManager;
31import android.content.Context;
32import android.content.Intent;
33import android.content.UndoManager;
34import android.content.res.ColorStateList;
35import android.content.res.CompatibilityInfo;
36import android.content.res.Configuration;
37import android.content.res.Resources;
38import android.content.res.TypedArray;
39import android.content.res.XmlResourceParser;
40import android.graphics.Canvas;
41import android.graphics.Insets;
42import android.graphics.Paint;
43import android.graphics.Path;
44import android.graphics.PorterDuff;
45import android.graphics.Rect;
46import android.graphics.RectF;
47import android.graphics.Typeface;
48import android.graphics.drawable.Drawable;
49import android.inputmethodservice.ExtractEditText;
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.Log;
108import android.util.TypedValue;
109import android.view.AccessibilityIterators.TextSegmentIterator;
110import android.view.ActionMode;
111import android.view.Choreographer;
112import android.view.DragEvent;
113import android.view.Gravity;
114import android.view.HapticFeedbackConstants;
115import android.view.KeyCharacterMap;
116import android.view.KeyEvent;
117import android.view.MotionEvent;
118import android.view.View;
119import android.view.ViewStructure;
120import android.view.ViewConfiguration;
121import android.view.ViewDebug;
122import android.view.ViewGroup.LayoutParams;
123import android.view.ViewRootImpl;
124import android.view.ViewTreeObserver;
125import android.view.ViewHierarchyEncoder;
126import android.view.accessibility.AccessibilityEvent;
127import android.view.accessibility.AccessibilityManager;
128import android.view.accessibility.AccessibilityNodeInfo;
129import android.view.animation.AnimationUtils;
130import android.view.inputmethod.BaseInputConnection;
131import android.view.inputmethod.CompletionInfo;
132import android.view.inputmethod.CorrectionInfo;
133import android.view.inputmethod.EditorInfo;
134import android.view.inputmethod.ExtractedText;
135import android.view.inputmethod.ExtractedTextRequest;
136import android.view.inputmethod.InputConnection;
137import android.view.inputmethod.InputMethodManager;
138import android.view.textservice.SpellCheckerSubtype;
139import android.view.textservice.TextServicesManager;
140import android.widget.RemoteViews.RemoteView;
141
142import com.android.internal.util.FastMath;
143import com.android.internal.widget.EditableInputConnection;
144
145import org.xmlpull.v1.XmlPullParserException;
146
147import java.io.IOException;
148import java.lang.ref.WeakReference;
149import java.util.ArrayList;
150import java.util.Locale;
151
152import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
153
154/**
155 * Displays text to the user and optionally allows them to edit it.  A TextView
156 * is a complete text editor, however the basic class is configured to not
157 * allow editing; see {@link EditText} for a subclass that configures the text
158 * view for editing.
159 *
160 * <p>
161 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
162 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
163 * android:textIsSelectable} to "true" or call
164 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
165 * allows users to make selection gestures in the TextView, which in turn triggers the system's
166 * built-in copy/paste controls.
167 * <p>
168 * <b>XML attributes</b>
169 * <p>
170 * See {@link android.R.styleable#TextView TextView Attributes},
171 * {@link android.R.styleable#View View Attributes}
172 *
173 * @attr ref android.R.styleable#TextView_text
174 * @attr ref android.R.styleable#TextView_bufferType
175 * @attr ref android.R.styleable#TextView_hint
176 * @attr ref android.R.styleable#TextView_textColor
177 * @attr ref android.R.styleable#TextView_textColorHighlight
178 * @attr ref android.R.styleable#TextView_textColorHint
179 * @attr ref android.R.styleable#TextView_textAppearance
180 * @attr ref android.R.styleable#TextView_textColorLink
181 * @attr ref android.R.styleable#TextView_textSize
182 * @attr ref android.R.styleable#TextView_textScaleX
183 * @attr ref android.R.styleable#TextView_fontFamily
184 * @attr ref android.R.styleable#TextView_typeface
185 * @attr ref android.R.styleable#TextView_textStyle
186 * @attr ref android.R.styleable#TextView_cursorVisible
187 * @attr ref android.R.styleable#TextView_maxLines
188 * @attr ref android.R.styleable#TextView_maxHeight
189 * @attr ref android.R.styleable#TextView_lines
190 * @attr ref android.R.styleable#TextView_height
191 * @attr ref android.R.styleable#TextView_minLines
192 * @attr ref android.R.styleable#TextView_minHeight
193 * @attr ref android.R.styleable#TextView_maxEms
194 * @attr ref android.R.styleable#TextView_maxWidth
195 * @attr ref android.R.styleable#TextView_ems
196 * @attr ref android.R.styleable#TextView_width
197 * @attr ref android.R.styleable#TextView_minEms
198 * @attr ref android.R.styleable#TextView_minWidth
199 * @attr ref android.R.styleable#TextView_gravity
200 * @attr ref android.R.styleable#TextView_scrollHorizontally
201 * @attr ref android.R.styleable#TextView_password
202 * @attr ref android.R.styleable#TextView_singleLine
203 * @attr ref android.R.styleable#TextView_selectAllOnFocus
204 * @attr ref android.R.styleable#TextView_includeFontPadding
205 * @attr ref android.R.styleable#TextView_maxLength
206 * @attr ref android.R.styleable#TextView_shadowColor
207 * @attr ref android.R.styleable#TextView_shadowDx
208 * @attr ref android.R.styleable#TextView_shadowDy
209 * @attr ref android.R.styleable#TextView_shadowRadius
210 * @attr ref android.R.styleable#TextView_autoLink
211 * @attr ref android.R.styleable#TextView_linksClickable
212 * @attr ref android.R.styleable#TextView_numeric
213 * @attr ref android.R.styleable#TextView_digits
214 * @attr ref android.R.styleable#TextView_phoneNumber
215 * @attr ref android.R.styleable#TextView_inputMethod
216 * @attr ref android.R.styleable#TextView_capitalize
217 * @attr ref android.R.styleable#TextView_autoText
218 * @attr ref android.R.styleable#TextView_editable
219 * @attr ref android.R.styleable#TextView_freezesText
220 * @attr ref android.R.styleable#TextView_ellipsize
221 * @attr ref android.R.styleable#TextView_drawableTop
222 * @attr ref android.R.styleable#TextView_drawableBottom
223 * @attr ref android.R.styleable#TextView_drawableRight
224 * @attr ref android.R.styleable#TextView_drawableLeft
225 * @attr ref android.R.styleable#TextView_drawableStart
226 * @attr ref android.R.styleable#TextView_drawableEnd
227 * @attr ref android.R.styleable#TextView_drawablePadding
228 * @attr ref android.R.styleable#TextView_drawableTint
229 * @attr ref android.R.styleable#TextView_drawableTintMode
230 * @attr ref android.R.styleable#TextView_lineSpacingExtra
231 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
232 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
233 * @attr ref android.R.styleable#TextView_inputType
234 * @attr ref android.R.styleable#TextView_imeOptions
235 * @attr ref android.R.styleable#TextView_privateImeOptions
236 * @attr ref android.R.styleable#TextView_imeActionLabel
237 * @attr ref android.R.styleable#TextView_imeActionId
238 * @attr ref android.R.styleable#TextView_editorExtras
239 * @attr ref android.R.styleable#TextView_elegantTextHeight
240 * @attr ref android.R.styleable#TextView_letterSpacing
241 * @attr ref android.R.styleable#TextView_fontFeatureSettings
242 * @attr ref android.R.styleable#TextView_breakStrategy
243 * @attr ref android.R.styleable#TextView_hyphenationFrequency
244 */
245@RemoteView
246public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
247    static final String LOG_TAG = "TextView";
248    static final boolean DEBUG_EXTRACT = false;
249
250    // Enum for the "typeface" XML parameter.
251    // TODO: How can we get this from the XML instead of hardcoding it here?
252    private static final int SANS = 1;
253    private static final int SERIF = 2;
254    private static final int MONOSPACE = 3;
255
256    // Bitfield for the "numeric" XML parameter.
257    // TODO: How can we get this from the XML instead of hardcoding it here?
258    private static final int SIGNED = 2;
259    private static final int DECIMAL = 4;
260
261    /**
262     * Draw marquee text with fading edges as usual
263     */
264    private static final int MARQUEE_FADE_NORMAL = 0;
265
266    /**
267     * Draw marquee text as ellipsize end while inactive instead of with the fade.
268     * (Useful for devices where the fade can be expensive if overdone)
269     */
270    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
271
272    /**
273     * Draw marquee text with fading edges because it is currently active/animating.
274     */
275    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
276
277    private static final int LINES = 1;
278    private static final int EMS = LINES;
279    private static final int PIXELS = 2;
280
281    private static final RectF TEMP_RECTF = new RectF();
282
283    // XXX should be much larger
284    private static final int VERY_WIDE = 1024*1024;
285    private static final int ANIMATED_SCROLL_GAP = 250;
286
287    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
288    private static final Spanned EMPTY_SPANNED = new SpannedString("");
289
290    private static final int CHANGE_WATCHER_PRIORITY = 100;
291
292    // New state used to change background based on whether this TextView is multiline.
293    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
294
295    // System wide time for last cut, copy or text changed action.
296    static long sLastCutCopyOrTextChangedTime;
297
298    /**
299     * @hide
300     */
301    static final int PROCESS_TEXT_REQUEST_CODE = 100;
302
303    private ColorStateList mTextColor;
304    private ColorStateList mHintTextColor;
305    private ColorStateList mLinkTextColor;
306    @ViewDebug.ExportedProperty(category = "text")
307    private int mCurTextColor;
308    private int mCurHintTextColor;
309    private boolean mFreezesText;
310    private boolean mDispatchTemporaryDetach;
311
312    /** Whether this view is temporarily detached from the parent view. */
313    boolean mTemporaryDetach;
314
315    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
316    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
317
318    private float mShadowRadius, mShadowDx, mShadowDy;
319    private int mShadowColor;
320
321    private boolean mPreDrawRegistered;
322    private boolean mPreDrawListenerDetached;
323
324    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
325    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
326    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
327    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
328    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
329    private boolean mPreventDefaultMovement;
330
331    private TextUtils.TruncateAt mEllipsize;
332
333    static class Drawables {
334        static final int LEFT = 0;
335        static final int TOP = 1;
336        static final int RIGHT = 2;
337        static final int BOTTOM = 3;
338
339        static final int DRAWABLE_NONE = -1;
340        static final int DRAWABLE_RIGHT = 0;
341        static final int DRAWABLE_LEFT = 1;
342
343        final Rect mCompoundRect = new Rect();
344
345        final Drawable[] mShowing = new Drawable[4];
346
347        ColorStateList mTintList;
348        PorterDuff.Mode mTintMode;
349        boolean mHasTint;
350        boolean mHasTintMode;
351
352        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
353        Drawable mDrawableLeftInitial, mDrawableRightInitial;
354
355        boolean mIsRtlCompatibilityMode;
356        boolean mOverride;
357
358        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
359                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
360
361        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
362                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
363
364        int mDrawablePadding;
365
366        int mDrawableSaved = DRAWABLE_NONE;
367
368        public Drawables(Context context) {
369            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
370            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
371                !context.getApplicationInfo().hasRtlSupport());
372            mOverride = false;
373        }
374
375        public void resolveWithLayoutDirection(int layoutDirection) {
376            // First reset "left" and "right" drawables to their initial values
377            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
378            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
379
380            if (mIsRtlCompatibilityMode) {
381                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
382                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
383                    mShowing[Drawables.LEFT] = mDrawableStart;
384                    mDrawableSizeLeft = mDrawableSizeStart;
385                    mDrawableHeightLeft = mDrawableHeightStart;
386                }
387                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
388                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
389                    mShowing[Drawables.RIGHT] = mDrawableEnd;
390                    mDrawableSizeRight = mDrawableSizeEnd;
391                    mDrawableHeightRight = mDrawableHeightEnd;
392                }
393            } else {
394                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
395                // drawable if and only if they have been defined
396                switch(layoutDirection) {
397                    case LAYOUT_DIRECTION_RTL:
398                        if (mOverride) {
399                            mShowing[Drawables.RIGHT] = mDrawableStart;
400                            mDrawableSizeRight = mDrawableSizeStart;
401                            mDrawableHeightRight = mDrawableHeightStart;
402
403                            mShowing[Drawables.LEFT] = mDrawableEnd;
404                            mDrawableSizeLeft = mDrawableSizeEnd;
405                            mDrawableHeightLeft = mDrawableHeightEnd;
406                        }
407                        break;
408
409                    case LAYOUT_DIRECTION_LTR:
410                    default:
411                        if (mOverride) {
412                            mShowing[Drawables.LEFT] = mDrawableStart;
413                            mDrawableSizeLeft = mDrawableSizeStart;
414                            mDrawableHeightLeft = mDrawableHeightStart;
415
416                            mShowing[Drawables.RIGHT] = mDrawableEnd;
417                            mDrawableSizeRight = mDrawableSizeEnd;
418                            mDrawableHeightRight = mDrawableHeightEnd;
419                        }
420                        break;
421                }
422            }
423            applyErrorDrawableIfNeeded(layoutDirection);
424            updateDrawablesLayoutDirection(layoutDirection);
425        }
426
427        private void updateDrawablesLayoutDirection(int layoutDirection) {
428            for (Drawable dr : mShowing) {
429                if (dr != null) {
430                    dr.setLayoutDirection(layoutDirection);
431                }
432            }
433        }
434
435        public void setErrorDrawable(Drawable dr, TextView tv) {
436            if (mDrawableError != dr && mDrawableError != null) {
437                mDrawableError.setCallback(null);
438            }
439            mDrawableError = dr;
440
441            if (mDrawableError != null) {
442                final Rect compoundRect = mCompoundRect;
443                final int[] state = tv.getDrawableState();
444
445                mDrawableError.setState(state);
446                mDrawableError.copyBounds(compoundRect);
447                mDrawableError.setCallback(tv);
448                mDrawableSizeError = compoundRect.width();
449                mDrawableHeightError = compoundRect.height();
450            } else {
451                mDrawableSizeError = mDrawableHeightError = 0;
452            }
453        }
454
455        private void applyErrorDrawableIfNeeded(int layoutDirection) {
456            // first restore the initial state if needed
457            switch (mDrawableSaved) {
458                case DRAWABLE_LEFT:
459                    mShowing[Drawables.LEFT] = mDrawableTemp;
460                    mDrawableSizeLeft = mDrawableSizeTemp;
461                    mDrawableHeightLeft = mDrawableHeightTemp;
462                    break;
463                case DRAWABLE_RIGHT:
464                    mShowing[Drawables.RIGHT] = mDrawableTemp;
465                    mDrawableSizeRight = mDrawableSizeTemp;
466                    mDrawableHeightRight = mDrawableHeightTemp;
467                    break;
468                case DRAWABLE_NONE:
469                default:
470            }
471            // then, if needed, assign the Error drawable to the correct location
472            if (mDrawableError != null) {
473                switch(layoutDirection) {
474                    case LAYOUT_DIRECTION_RTL:
475                        mDrawableSaved = DRAWABLE_LEFT;
476
477                        mDrawableTemp = mShowing[Drawables.LEFT];
478                        mDrawableSizeTemp = mDrawableSizeLeft;
479                        mDrawableHeightTemp = mDrawableHeightLeft;
480
481                        mShowing[Drawables.LEFT] = mDrawableError;
482                        mDrawableSizeLeft = mDrawableSizeError;
483                        mDrawableHeightLeft = mDrawableHeightError;
484                        break;
485                    case LAYOUT_DIRECTION_LTR:
486                    default:
487                        mDrawableSaved = DRAWABLE_RIGHT;
488
489                        mDrawableTemp = mShowing[Drawables.RIGHT];
490                        mDrawableSizeTemp = mDrawableSizeRight;
491                        mDrawableHeightTemp = mDrawableHeightRight;
492
493                        mShowing[Drawables.RIGHT] = mDrawableError;
494                        mDrawableSizeRight = mDrawableSizeError;
495                        mDrawableHeightRight = mDrawableHeightError;
496                        break;
497                }
498            }
499        }
500    }
501
502    Drawables mDrawables;
503
504    private CharWrapper mCharWrapper;
505
506    private Marquee mMarquee;
507    private boolean mRestartMarquee;
508
509    private int mMarqueeRepeatLimit = 3;
510
511    private int mLastLayoutDirection = -1;
512
513    /**
514     * On some devices the fading edges add a performance penalty if used
515     * extensively in the same layout. This mode indicates how the marquee
516     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
517     */
518    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
519
520    /**
521     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
522     * the layout that should be used when the mode switches.
523     */
524    private Layout mSavedMarqueeModeLayout;
525
526    @ViewDebug.ExportedProperty(category = "text")
527    private CharSequence mText;
528    private CharSequence mTransformed;
529    private BufferType mBufferType = BufferType.NORMAL;
530
531    private CharSequence mHint;
532    private Layout mHintLayout;
533
534    private MovementMethod mMovement;
535
536    private TransformationMethod mTransformation;
537    private boolean mAllowTransformationLengthChange;
538    private ChangeWatcher mChangeWatcher;
539
540    private ArrayList<TextWatcher> mListeners;
541
542    // display attributes
543    private final TextPaint mTextPaint;
544    private boolean mUserSetTextScaleX;
545    private Layout mLayout;
546    private boolean mLocaleChanged = false;
547
548    @ViewDebug.ExportedProperty(category = "text")
549    private int mGravity = Gravity.TOP | Gravity.START;
550    private boolean mHorizontallyScrolling;
551
552    private int mAutoLinkMask;
553    private boolean mLinksClickable = true;
554
555    private float mSpacingMult = 1.0f;
556    private float mSpacingAdd = 0.0f;
557
558    private int mBreakStrategy;
559    private int mHyphenationFrequency;
560
561    private int mMaximum = Integer.MAX_VALUE;
562    private int mMaxMode = LINES;
563    private int mMinimum = 0;
564    private int mMinMode = LINES;
565
566    private int mOldMaximum = mMaximum;
567    private int mOldMaxMode = mMaxMode;
568
569    private int mMaxWidth = Integer.MAX_VALUE;
570    private int mMaxWidthMode = PIXELS;
571    private int mMinWidth = 0;
572    private int mMinWidthMode = PIXELS;
573
574    private boolean mSingleLine;
575    private int mDesiredHeightAtMeasure = -1;
576    private boolean mIncludePad = true;
577    private int mDeferScroll = -1;
578
579    // tmp primitives, so we don't alloc them on each draw
580    private Rect mTempRect;
581    private long mLastScroll;
582    private Scroller mScroller;
583
584    private BoringLayout.Metrics mBoring, mHintBoring;
585    private BoringLayout mSavedLayout, mSavedHintLayout;
586
587    private TextDirectionHeuristic mTextDir;
588
589    private InputFilter[] mFilters = NO_FILTERS;
590
591    private volatile Locale mCurrentSpellCheckerLocaleCache;
592
593    // It is possible to have a selection even when mEditor is null (programmatically set, like when
594    // a link is pressed). These highlight-related fields do not go in mEditor.
595    int mHighlightColor = 0x6633B5E5;
596    private Path mHighlightPath;
597    private final Paint mHighlightPaint;
598    private boolean mHighlightPathBogus = true;
599
600    private boolean mFirstTouch = false;
601    private long mLastTouchUpTime = 0;
602
603    // Although these fields are specific to editable text, they are not added to Editor because
604    // they are defined by the TextView's style and are theme-dependent.
605    int mCursorDrawableRes;
606    // These four fields, could be moved to Editor, since we know their default values and we
607    // could condition the creation of the Editor to a non standard value. This is however
608    // brittle since the hardcoded values here (such as
609    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
610    // default style is modified.
611    int mTextSelectHandleLeftRes;
612    int mTextSelectHandleRightRes;
613    int mTextSelectHandleRes;
614    int mTextEditSuggestionItemLayout;
615
616    /**
617     * EditText specific data, created on demand when one of the Editor fields is used.
618     * See {@link #createEditorIfNeeded()}.
619     */
620    private Editor mEditor;
621
622    /*
623     * Kick-start the font cache for the zygote process (to pay the cost of
624     * initializing freetype for our default font only once).
625     */
626    static {
627        Paint p = new Paint();
628        p.setAntiAlias(true);
629        // We don't care about the result, just the side-effect of measuring.
630        p.measureText("H");
631    }
632
633    /**
634     * Interface definition for a callback to be invoked when an action is
635     * performed on the editor.
636     */
637    public interface OnEditorActionListener {
638        /**
639         * Called when an action is being performed.
640         *
641         * @param v The view that was clicked.
642         * @param actionId Identifier of the action.  This will be either the
643         * identifier you supplied, or {@link EditorInfo#IME_NULL
644         * EditorInfo.IME_NULL} if being called due to the enter key
645         * being pressed.
646         * @param event If triggered by an enter key, this is the event;
647         * otherwise, this is null.
648         * @return Return true if you have consumed the action, else false.
649         */
650        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
651    }
652
653    public TextView(Context context) {
654        this(context, null);
655    }
656
657    public TextView(Context context, @Nullable AttributeSet attrs) {
658        this(context, attrs, com.android.internal.R.attr.textViewStyle);
659    }
660
661    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
662        this(context, attrs, defStyleAttr, 0);
663    }
664
665    @SuppressWarnings("deprecation")
666    public TextView(
667            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
668        super(context, attrs, defStyleAttr, defStyleRes);
669
670        mText = "";
671
672        final Resources res = getResources();
673        final CompatibilityInfo compat = res.getCompatibilityInfo();
674
675        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
676        mTextPaint.density = res.getDisplayMetrics().density;
677        mTextPaint.setCompatibilityScaling(compat.applicationScale);
678
679        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
680        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
681
682        mMovement = getDefaultMovementMethod();
683
684        mTransformation = null;
685
686        int textColorHighlight = 0;
687        ColorStateList textColor = null;
688        ColorStateList textColorHint = null;
689        ColorStateList textColorLink = null;
690        int textSize = 15;
691        String fontFamily = null;
692        boolean fontFamilyExplicit = false;
693        int typefaceIndex = -1;
694        int styleIndex = -1;
695        boolean allCaps = false;
696        int shadowcolor = 0;
697        float dx = 0, dy = 0, r = 0;
698        boolean elegant = false;
699        float letterSpacing = 0;
700        String fontFeatureSettings = null;
701        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
702        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
703
704        final Resources.Theme theme = context.getTheme();
705
706        /*
707         * Look the appearance up without checking first if it exists because
708         * almost every TextView has one and it greatly simplifies the logic
709         * to be able to parse the appearance first and then let specific tags
710         * for this View override it.
711         */
712        TypedArray a = theme.obtainStyledAttributes(attrs,
713                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
714        TypedArray appearance = null;
715        int ap = a.getResourceId(
716                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
717        a.recycle();
718        if (ap != -1) {
719            appearance = theme.obtainStyledAttributes(
720                    ap, com.android.internal.R.styleable.TextAppearance);
721        }
722        if (appearance != null) {
723            int n = appearance.getIndexCount();
724            for (int i = 0; i < n; i++) {
725                int attr = appearance.getIndex(i);
726
727                switch (attr) {
728                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
729                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
730                    break;
731
732                case com.android.internal.R.styleable.TextAppearance_textColor:
733                    textColor = appearance.getColorStateList(attr);
734                    break;
735
736                case com.android.internal.R.styleable.TextAppearance_textColorHint:
737                    textColorHint = appearance.getColorStateList(attr);
738                    break;
739
740                case com.android.internal.R.styleable.TextAppearance_textColorLink:
741                    textColorLink = appearance.getColorStateList(attr);
742                    break;
743
744                case com.android.internal.R.styleable.TextAppearance_textSize:
745                    textSize = appearance.getDimensionPixelSize(attr, textSize);
746                    break;
747
748                case com.android.internal.R.styleable.TextAppearance_typeface:
749                    typefaceIndex = appearance.getInt(attr, -1);
750                    break;
751
752                case com.android.internal.R.styleable.TextAppearance_fontFamily:
753                    fontFamily = appearance.getString(attr);
754                    break;
755
756                case com.android.internal.R.styleable.TextAppearance_textStyle:
757                    styleIndex = appearance.getInt(attr, -1);
758                    break;
759
760                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
761                    allCaps = appearance.getBoolean(attr, false);
762                    break;
763
764                case com.android.internal.R.styleable.TextAppearance_shadowColor:
765                    shadowcolor = appearance.getInt(attr, 0);
766                    break;
767
768                case com.android.internal.R.styleable.TextAppearance_shadowDx:
769                    dx = appearance.getFloat(attr, 0);
770                    break;
771
772                case com.android.internal.R.styleable.TextAppearance_shadowDy:
773                    dy = appearance.getFloat(attr, 0);
774                    break;
775
776                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
777                    r = appearance.getFloat(attr, 0);
778                    break;
779
780                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
781                    elegant = appearance.getBoolean(attr, false);
782                    break;
783
784                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
785                    letterSpacing = appearance.getFloat(attr, 0);
786                    break;
787
788                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
789                    fontFeatureSettings = appearance.getString(attr);
790                    break;
791                }
792            }
793
794            appearance.recycle();
795        }
796
797        boolean editable = getDefaultEditable();
798        CharSequence inputMethod = null;
799        int numeric = 0;
800        CharSequence digits = null;
801        boolean phone = false;
802        boolean autotext = false;
803        int autocap = -1;
804        int buffertype = 0;
805        boolean selectallonfocus = false;
806        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
807            drawableBottom = null, drawableStart = null, drawableEnd = null;
808        ColorStateList drawableTint = null;
809        PorterDuff.Mode drawableTintMode = null;
810        int drawablePadding = 0;
811        int ellipsize = -1;
812        boolean singleLine = false;
813        int maxlength = -1;
814        CharSequence text = "";
815        CharSequence hint = null;
816        boolean password = false;
817        int inputType = EditorInfo.TYPE_NULL;
818
819        a = theme.obtainStyledAttributes(
820                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
821
822        int n = a.getIndexCount();
823        for (int i = 0; i < n; i++) {
824            int attr = a.getIndex(i);
825
826            switch (attr) {
827            case com.android.internal.R.styleable.TextView_editable:
828                editable = a.getBoolean(attr, editable);
829                break;
830
831            case com.android.internal.R.styleable.TextView_inputMethod:
832                inputMethod = a.getText(attr);
833                break;
834
835            case com.android.internal.R.styleable.TextView_numeric:
836                numeric = a.getInt(attr, numeric);
837                break;
838
839            case com.android.internal.R.styleable.TextView_digits:
840                digits = a.getText(attr);
841                break;
842
843            case com.android.internal.R.styleable.TextView_phoneNumber:
844                phone = a.getBoolean(attr, phone);
845                break;
846
847            case com.android.internal.R.styleable.TextView_autoText:
848                autotext = a.getBoolean(attr, autotext);
849                break;
850
851            case com.android.internal.R.styleable.TextView_capitalize:
852                autocap = a.getInt(attr, autocap);
853                break;
854
855            case com.android.internal.R.styleable.TextView_bufferType:
856                buffertype = a.getInt(attr, buffertype);
857                break;
858
859            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
860                selectallonfocus = a.getBoolean(attr, selectallonfocus);
861                break;
862
863            case com.android.internal.R.styleable.TextView_autoLink:
864                mAutoLinkMask = a.getInt(attr, 0);
865                break;
866
867            case com.android.internal.R.styleable.TextView_linksClickable:
868                mLinksClickable = a.getBoolean(attr, true);
869                break;
870
871            case com.android.internal.R.styleable.TextView_drawableLeft:
872                drawableLeft = a.getDrawable(attr);
873                break;
874
875            case com.android.internal.R.styleable.TextView_drawableTop:
876                drawableTop = a.getDrawable(attr);
877                break;
878
879            case com.android.internal.R.styleable.TextView_drawableRight:
880                drawableRight = a.getDrawable(attr);
881                break;
882
883            case com.android.internal.R.styleable.TextView_drawableBottom:
884                drawableBottom = a.getDrawable(attr);
885                break;
886
887            case com.android.internal.R.styleable.TextView_drawableStart:
888                drawableStart = a.getDrawable(attr);
889                break;
890
891            case com.android.internal.R.styleable.TextView_drawableEnd:
892                drawableEnd = a.getDrawable(attr);
893                break;
894
895            case com.android.internal.R.styleable.TextView_drawableTint:
896                drawableTint = a.getColorStateList(attr);
897                break;
898
899            case com.android.internal.R.styleable.TextView_drawableTintMode:
900                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
901                break;
902
903            case com.android.internal.R.styleable.TextView_drawablePadding:
904                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
905                break;
906
907            case com.android.internal.R.styleable.TextView_maxLines:
908                setMaxLines(a.getInt(attr, -1));
909                break;
910
911            case com.android.internal.R.styleable.TextView_maxHeight:
912                setMaxHeight(a.getDimensionPixelSize(attr, -1));
913                break;
914
915            case com.android.internal.R.styleable.TextView_lines:
916                setLines(a.getInt(attr, -1));
917                break;
918
919            case com.android.internal.R.styleable.TextView_height:
920                setHeight(a.getDimensionPixelSize(attr, -1));
921                break;
922
923            case com.android.internal.R.styleable.TextView_minLines:
924                setMinLines(a.getInt(attr, -1));
925                break;
926
927            case com.android.internal.R.styleable.TextView_minHeight:
928                setMinHeight(a.getDimensionPixelSize(attr, -1));
929                break;
930
931            case com.android.internal.R.styleable.TextView_maxEms:
932                setMaxEms(a.getInt(attr, -1));
933                break;
934
935            case com.android.internal.R.styleable.TextView_maxWidth:
936                setMaxWidth(a.getDimensionPixelSize(attr, -1));
937                break;
938
939            case com.android.internal.R.styleable.TextView_ems:
940                setEms(a.getInt(attr, -1));
941                break;
942
943            case com.android.internal.R.styleable.TextView_width:
944                setWidth(a.getDimensionPixelSize(attr, -1));
945                break;
946
947            case com.android.internal.R.styleable.TextView_minEms:
948                setMinEms(a.getInt(attr, -1));
949                break;
950
951            case com.android.internal.R.styleable.TextView_minWidth:
952                setMinWidth(a.getDimensionPixelSize(attr, -1));
953                break;
954
955            case com.android.internal.R.styleable.TextView_gravity:
956                setGravity(a.getInt(attr, -1));
957                break;
958
959            case com.android.internal.R.styleable.TextView_hint:
960                hint = a.getText(attr);
961                break;
962
963            case com.android.internal.R.styleable.TextView_text:
964                text = a.getText(attr);
965                break;
966
967            case com.android.internal.R.styleable.TextView_scrollHorizontally:
968                if (a.getBoolean(attr, false)) {
969                    setHorizontallyScrolling(true);
970                }
971                break;
972
973            case com.android.internal.R.styleable.TextView_singleLine:
974                singleLine = a.getBoolean(attr, singleLine);
975                break;
976
977            case com.android.internal.R.styleable.TextView_ellipsize:
978                ellipsize = a.getInt(attr, ellipsize);
979                break;
980
981            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
982                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
983                break;
984
985            case com.android.internal.R.styleable.TextView_includeFontPadding:
986                if (!a.getBoolean(attr, true)) {
987                    setIncludeFontPadding(false);
988                }
989                break;
990
991            case com.android.internal.R.styleable.TextView_cursorVisible:
992                if (!a.getBoolean(attr, true)) {
993                    setCursorVisible(false);
994                }
995                break;
996
997            case com.android.internal.R.styleable.TextView_maxLength:
998                maxlength = a.getInt(attr, -1);
999                break;
1000
1001            case com.android.internal.R.styleable.TextView_textScaleX:
1002                setTextScaleX(a.getFloat(attr, 1.0f));
1003                break;
1004
1005            case com.android.internal.R.styleable.TextView_freezesText:
1006                mFreezesText = a.getBoolean(attr, false);
1007                break;
1008
1009            case com.android.internal.R.styleable.TextView_shadowColor:
1010                shadowcolor = a.getInt(attr, 0);
1011                break;
1012
1013            case com.android.internal.R.styleable.TextView_shadowDx:
1014                dx = a.getFloat(attr, 0);
1015                break;
1016
1017            case com.android.internal.R.styleable.TextView_shadowDy:
1018                dy = a.getFloat(attr, 0);
1019                break;
1020
1021            case com.android.internal.R.styleable.TextView_shadowRadius:
1022                r = a.getFloat(attr, 0);
1023                break;
1024
1025            case com.android.internal.R.styleable.TextView_enabled:
1026                setEnabled(a.getBoolean(attr, isEnabled()));
1027                break;
1028
1029            case com.android.internal.R.styleable.TextView_textColorHighlight:
1030                textColorHighlight = a.getColor(attr, textColorHighlight);
1031                break;
1032
1033            case com.android.internal.R.styleable.TextView_textColor:
1034                textColor = a.getColorStateList(attr);
1035                break;
1036
1037            case com.android.internal.R.styleable.TextView_textColorHint:
1038                textColorHint = a.getColorStateList(attr);
1039                break;
1040
1041            case com.android.internal.R.styleable.TextView_textColorLink:
1042                textColorLink = a.getColorStateList(attr);
1043                break;
1044
1045            case com.android.internal.R.styleable.TextView_textSize:
1046                textSize = a.getDimensionPixelSize(attr, textSize);
1047                break;
1048
1049            case com.android.internal.R.styleable.TextView_typeface:
1050                typefaceIndex = a.getInt(attr, typefaceIndex);
1051                break;
1052
1053            case com.android.internal.R.styleable.TextView_textStyle:
1054                styleIndex = a.getInt(attr, styleIndex);
1055                break;
1056
1057            case com.android.internal.R.styleable.TextView_fontFamily:
1058                fontFamily = a.getString(attr);
1059                fontFamilyExplicit = true;
1060                break;
1061
1062            case com.android.internal.R.styleable.TextView_password:
1063                password = a.getBoolean(attr, password);
1064                break;
1065
1066            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1067                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1068                break;
1069
1070            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1071                mSpacingMult = a.getFloat(attr, mSpacingMult);
1072                break;
1073
1074            case com.android.internal.R.styleable.TextView_inputType:
1075                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1076                break;
1077
1078            case com.android.internal.R.styleable.TextView_allowUndo:
1079                createEditorIfNeeded();
1080                mEditor.mAllowUndo = a.getBoolean(attr, true);
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_imeOptions:
1084                createEditorIfNeeded();
1085                mEditor.createInputContentTypeIfNeeded();
1086                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1087                        mEditor.mInputContentType.imeOptions);
1088                break;
1089
1090            case com.android.internal.R.styleable.TextView_imeActionLabel:
1091                createEditorIfNeeded();
1092                mEditor.createInputContentTypeIfNeeded();
1093                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1094                break;
1095
1096            case com.android.internal.R.styleable.TextView_imeActionId:
1097                createEditorIfNeeded();
1098                mEditor.createInputContentTypeIfNeeded();
1099                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1100                        mEditor.mInputContentType.imeActionId);
1101                break;
1102
1103            case com.android.internal.R.styleable.TextView_privateImeOptions:
1104                setPrivateImeOptions(a.getString(attr));
1105                break;
1106
1107            case com.android.internal.R.styleable.TextView_editorExtras:
1108                try {
1109                    setInputExtras(a.getResourceId(attr, 0));
1110                } catch (XmlPullParserException e) {
1111                    Log.w(LOG_TAG, "Failure reading input extras", e);
1112                } catch (IOException e) {
1113                    Log.w(LOG_TAG, "Failure reading input extras", e);
1114                }
1115                break;
1116
1117            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1118                mCursorDrawableRes = a.getResourceId(attr, 0);
1119                break;
1120
1121            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1122                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1123                break;
1124
1125            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1126                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1127                break;
1128
1129            case com.android.internal.R.styleable.TextView_textSelectHandle:
1130                mTextSelectHandleRes = a.getResourceId(attr, 0);
1131                break;
1132
1133            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1134                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1135                break;
1136
1137            case com.android.internal.R.styleable.TextView_textIsSelectable:
1138                setTextIsSelectable(a.getBoolean(attr, false));
1139                break;
1140
1141            case com.android.internal.R.styleable.TextView_textAllCaps:
1142                allCaps = a.getBoolean(attr, false);
1143                break;
1144
1145            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1146                elegant = a.getBoolean(attr, false);
1147                break;
1148
1149            case com.android.internal.R.styleable.TextView_letterSpacing:
1150                letterSpacing = a.getFloat(attr, 0);
1151                break;
1152
1153            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1154                fontFeatureSettings = a.getString(attr);
1155                break;
1156
1157            case com.android.internal.R.styleable.TextView_breakStrategy:
1158                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1159                break;
1160
1161            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1162                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1163                break;
1164            }
1165        }
1166        a.recycle();
1167
1168        BufferType bufferType = BufferType.EDITABLE;
1169
1170        final int variation =
1171                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1172        final boolean passwordInputType = variation
1173                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1174        final boolean webPasswordInputType = variation
1175                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1176        final boolean numberPasswordInputType = variation
1177                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1178
1179        if (inputMethod != null) {
1180            Class<?> c;
1181
1182            try {
1183                c = Class.forName(inputMethod.toString());
1184            } catch (ClassNotFoundException ex) {
1185                throw new RuntimeException(ex);
1186            }
1187
1188            try {
1189                createEditorIfNeeded();
1190                mEditor.mKeyListener = (KeyListener) c.newInstance();
1191            } catch (InstantiationException ex) {
1192                throw new RuntimeException(ex);
1193            } catch (IllegalAccessException ex) {
1194                throw new RuntimeException(ex);
1195            }
1196            try {
1197                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1198                        ? inputType
1199                        : mEditor.mKeyListener.getInputType();
1200            } catch (IncompatibleClassChangeError e) {
1201                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1202            }
1203        } else if (digits != null) {
1204            createEditorIfNeeded();
1205            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1206            // If no input type was specified, we will default to generic
1207            // text, since we can't tell the IME about the set of digits
1208            // that was selected.
1209            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1210                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1211        } else if (inputType != EditorInfo.TYPE_NULL) {
1212            setInputType(inputType, true);
1213            // If set, the input type overrides what was set using the deprecated singleLine flag.
1214            singleLine = !isMultilineInputType(inputType);
1215        } else if (phone) {
1216            createEditorIfNeeded();
1217            mEditor.mKeyListener = DialerKeyListener.getInstance();
1218            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1219        } else if (numeric != 0) {
1220            createEditorIfNeeded();
1221            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1222                                                   (numeric & DECIMAL) != 0);
1223            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1224            if ((numeric & SIGNED) != 0) {
1225                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1226            }
1227            if ((numeric & DECIMAL) != 0) {
1228                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1229            }
1230            mEditor.mInputType = inputType;
1231        } else if (autotext || autocap != -1) {
1232            TextKeyListener.Capitalize cap;
1233
1234            inputType = EditorInfo.TYPE_CLASS_TEXT;
1235
1236            switch (autocap) {
1237            case 1:
1238                cap = TextKeyListener.Capitalize.SENTENCES;
1239                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1240                break;
1241
1242            case 2:
1243                cap = TextKeyListener.Capitalize.WORDS;
1244                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1245                break;
1246
1247            case 3:
1248                cap = TextKeyListener.Capitalize.CHARACTERS;
1249                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1250                break;
1251
1252            default:
1253                cap = TextKeyListener.Capitalize.NONE;
1254                break;
1255            }
1256
1257            createEditorIfNeeded();
1258            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1259            mEditor.mInputType = inputType;
1260        } else if (isTextSelectable()) {
1261            // Prevent text changes from keyboard.
1262            if (mEditor != null) {
1263                mEditor.mKeyListener = null;
1264                mEditor.mInputType = EditorInfo.TYPE_NULL;
1265            }
1266            bufferType = BufferType.SPANNABLE;
1267            // So that selection can be changed using arrow keys and touch is handled.
1268            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1269        } else if (editable) {
1270            createEditorIfNeeded();
1271            mEditor.mKeyListener = TextKeyListener.getInstance();
1272            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1273        } else {
1274            if (mEditor != null) mEditor.mKeyListener = null;
1275
1276            switch (buffertype) {
1277                case 0:
1278                    bufferType = BufferType.NORMAL;
1279                    break;
1280                case 1:
1281                    bufferType = BufferType.SPANNABLE;
1282                    break;
1283                case 2:
1284                    bufferType = BufferType.EDITABLE;
1285                    break;
1286            }
1287        }
1288
1289        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1290                webPasswordInputType, numberPasswordInputType);
1291
1292        if (selectallonfocus) {
1293            createEditorIfNeeded();
1294            mEditor.mSelectAllOnFocus = true;
1295
1296            if (bufferType == BufferType.NORMAL)
1297                bufferType = BufferType.SPANNABLE;
1298        }
1299
1300        // Set up the tint (if needed) before setting the drawables so that it
1301        // gets applied correctly.
1302        if (drawableTint != null || drawableTintMode != null) {
1303            if (mDrawables == null) {
1304                mDrawables = new Drawables(context);
1305            }
1306            if (drawableTint != null) {
1307                mDrawables.mTintList = drawableTint;
1308                mDrawables.mHasTint = true;
1309            }
1310            if (drawableTintMode != null) {
1311                mDrawables.mTintMode = drawableTintMode;
1312                mDrawables.mHasTintMode = true;
1313            }
1314        }
1315
1316        // This call will save the initial left/right drawables
1317        setCompoundDrawablesWithIntrinsicBounds(
1318            drawableLeft, drawableTop, drawableRight, drawableBottom);
1319        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1320        setCompoundDrawablePadding(drawablePadding);
1321
1322        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1323        // of lines of height are unchanged for multi-line TextViews.
1324        setInputTypeSingleLine(singleLine);
1325        applySingleLine(singleLine, singleLine, singleLine);
1326
1327        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1328                ellipsize = 3; // END
1329        }
1330
1331        switch (ellipsize) {
1332            case 1:
1333                setEllipsize(TextUtils.TruncateAt.START);
1334                break;
1335            case 2:
1336                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1337                break;
1338            case 3:
1339                setEllipsize(TextUtils.TruncateAt.END);
1340                break;
1341            case 4:
1342                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1343                    setHorizontalFadingEdgeEnabled(true);
1344                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1345                } else {
1346                    setHorizontalFadingEdgeEnabled(false);
1347                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1348                }
1349                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1350                break;
1351        }
1352
1353        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1354        setHintTextColor(textColorHint);
1355        setLinkTextColor(textColorLink);
1356        if (textColorHighlight != 0) {
1357            setHighlightColor(textColorHighlight);
1358        }
1359        setRawTextSize(textSize);
1360        setElegantTextHeight(elegant);
1361        setLetterSpacing(letterSpacing);
1362        setFontFeatureSettings(fontFeatureSettings);
1363
1364        if (allCaps) {
1365            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1366        }
1367
1368        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1369            setTransformationMethod(PasswordTransformationMethod.getInstance());
1370            typefaceIndex = MONOSPACE;
1371        } else if (mEditor != null &&
1372                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1373                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1374            typefaceIndex = MONOSPACE;
1375        }
1376
1377        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1378            fontFamily = null;
1379        }
1380        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1381
1382        if (shadowcolor != 0) {
1383            setShadowLayer(r, dx, dy, shadowcolor);
1384        }
1385
1386        if (maxlength >= 0) {
1387            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1388        } else {
1389            setFilters(NO_FILTERS);
1390        }
1391
1392        setText(text, bufferType);
1393        if (hint != null) setHint(hint);
1394
1395        /*
1396         * Views are not normally focusable unless specified to be.
1397         * However, TextViews that have input or movement methods *are*
1398         * focusable by default.
1399         */
1400        a = context.obtainStyledAttributes(
1401                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1402
1403        boolean focusable = mMovement != null || getKeyListener() != null;
1404        boolean clickable = focusable || isClickable();
1405        boolean longClickable = focusable || isLongClickable();
1406
1407        n = a.getIndexCount();
1408        for (int i = 0; i < n; i++) {
1409            int attr = a.getIndex(i);
1410
1411            switch (attr) {
1412            case com.android.internal.R.styleable.View_focusable:
1413                focusable = a.getBoolean(attr, focusable);
1414                break;
1415
1416            case com.android.internal.R.styleable.View_clickable:
1417                clickable = a.getBoolean(attr, clickable);
1418                break;
1419
1420            case com.android.internal.R.styleable.View_longClickable:
1421                longClickable = a.getBoolean(attr, longClickable);
1422                break;
1423            }
1424        }
1425        a.recycle();
1426
1427        setFocusable(focusable);
1428        setClickable(clickable);
1429        setLongClickable(longClickable);
1430
1431        if (mEditor != null) mEditor.prepareCursorControllers();
1432
1433        // If not explicitly specified this view is important for accessibility.
1434        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1435            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1436        }
1437    }
1438
1439    private int[] parseDimensionArray(TypedArray dimens) {
1440        if (dimens == null) {
1441            return null;
1442        }
1443        int[] result = new int[dimens.length()];
1444        for (int i = 0; i < result.length; i++) {
1445            result[i] = dimens.getDimensionPixelSize(i, 0);
1446        }
1447        return result;
1448    }
1449
1450    /**
1451     * @hide
1452     */
1453    @Override
1454    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1455        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1456            if (resultCode == Activity.RESULT_OK && data != null) {
1457                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1458                if (result != null) {
1459                    if (isTextEditable()) {
1460                        replaceSelectionWithText(result);
1461                    } else {
1462                        if (result.length() > 0) {
1463                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1464                                .show();
1465                        }
1466                    }
1467                }
1468            }
1469            if (mEditor.hasSelectionController()) {
1470                mEditor.startSelectionActionMode();
1471            }
1472        }
1473    }
1474
1475    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1476        Typeface tf = null;
1477        if (familyName != null) {
1478            tf = Typeface.create(familyName, styleIndex);
1479            if (tf != null) {
1480                setTypeface(tf);
1481                return;
1482            }
1483        }
1484        switch (typefaceIndex) {
1485            case SANS:
1486                tf = Typeface.SANS_SERIF;
1487                break;
1488
1489            case SERIF:
1490                tf = Typeface.SERIF;
1491                break;
1492
1493            case MONOSPACE:
1494                tf = Typeface.MONOSPACE;
1495                break;
1496        }
1497
1498        setTypeface(tf, styleIndex);
1499    }
1500
1501    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1502        boolean hasRelativeDrawables = (start != null) || (end != null);
1503        if (hasRelativeDrawables) {
1504            Drawables dr = mDrawables;
1505            if (dr == null) {
1506                mDrawables = dr = new Drawables(getContext());
1507            }
1508            mDrawables.mOverride = true;
1509            final Rect compoundRect = dr.mCompoundRect;
1510            int[] state = getDrawableState();
1511            if (start != null) {
1512                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1513                start.setState(state);
1514                start.copyBounds(compoundRect);
1515                start.setCallback(this);
1516
1517                dr.mDrawableStart = start;
1518                dr.mDrawableSizeStart = compoundRect.width();
1519                dr.mDrawableHeightStart = compoundRect.height();
1520            } else {
1521                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1522            }
1523            if (end != null) {
1524                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1525                end.setState(state);
1526                end.copyBounds(compoundRect);
1527                end.setCallback(this);
1528
1529                dr.mDrawableEnd = end;
1530                dr.mDrawableSizeEnd = compoundRect.width();
1531                dr.mDrawableHeightEnd = compoundRect.height();
1532            } else {
1533                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1534            }
1535            resetResolvedDrawables();
1536            resolveDrawables();
1537            applyCompoundDrawableTint();
1538        }
1539    }
1540
1541    @Override
1542    public void setEnabled(boolean enabled) {
1543        if (enabled == isEnabled()) {
1544            return;
1545        }
1546
1547        if (!enabled) {
1548            // Hide the soft input if the currently active TextView is disabled
1549            InputMethodManager imm = InputMethodManager.peekInstance();
1550            if (imm != null && imm.isActive(this)) {
1551                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1552            }
1553        }
1554
1555        super.setEnabled(enabled);
1556
1557        if (enabled) {
1558            // Make sure IME is updated with current editor info.
1559            InputMethodManager imm = InputMethodManager.peekInstance();
1560            if (imm != null) imm.restartInput(this);
1561        }
1562
1563        // Will change text color
1564        if (mEditor != null) {
1565            mEditor.invalidateTextDisplayList();
1566            mEditor.prepareCursorControllers();
1567
1568            // start or stop the cursor blinking as appropriate
1569            mEditor.makeBlink();
1570        }
1571    }
1572
1573    /**
1574     * Sets the typeface and style in which the text should be displayed,
1575     * and turns on the fake bold and italic bits in the Paint if the
1576     * Typeface that you provided does not have all the bits in the
1577     * style that you specified.
1578     *
1579     * @attr ref android.R.styleable#TextView_typeface
1580     * @attr ref android.R.styleable#TextView_textStyle
1581     */
1582    public void setTypeface(Typeface tf, int style) {
1583        if (style > 0) {
1584            if (tf == null) {
1585                tf = Typeface.defaultFromStyle(style);
1586            } else {
1587                tf = Typeface.create(tf, style);
1588            }
1589
1590            setTypeface(tf);
1591            // now compute what (if any) algorithmic styling is needed
1592            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1593            int need = style & ~typefaceStyle;
1594            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1595            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1596        } else {
1597            mTextPaint.setFakeBoldText(false);
1598            mTextPaint.setTextSkewX(0);
1599            setTypeface(tf);
1600        }
1601    }
1602
1603    /**
1604     * Subclasses override this to specify that they have a KeyListener
1605     * by default even if not specifically called for in the XML options.
1606     */
1607    protected boolean getDefaultEditable() {
1608        return false;
1609    }
1610
1611    /**
1612     * Subclasses override this to specify a default movement method.
1613     */
1614    protected MovementMethod getDefaultMovementMethod() {
1615        return null;
1616    }
1617
1618    /**
1619     * Return the text the TextView is displaying. If setText() was called with
1620     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1621     * the return value from this method to Spannable or Editable, respectively.
1622     *
1623     * Note: The content of the return value should not be modified. If you want
1624     * a modifiable one, you should make your own copy first.
1625     *
1626     * @attr ref android.R.styleable#TextView_text
1627     */
1628    @ViewDebug.CapturedViewProperty
1629    public CharSequence getText() {
1630        return mText;
1631    }
1632
1633    /**
1634     * Returns the length, in characters, of the text managed by this TextView
1635     */
1636    public int length() {
1637        return mText.length();
1638    }
1639
1640    /**
1641     * Return the text the TextView is displaying as an Editable object.  If
1642     * the text is not editable, null is returned.
1643     *
1644     * @see #getText
1645     */
1646    public Editable getEditableText() {
1647        return (mText instanceof Editable) ? (Editable)mText : null;
1648    }
1649
1650    /**
1651     * @return the height of one standard line in pixels.  Note that markup
1652     * within the text can cause individual lines to be taller or shorter
1653     * than this height, and the layout may contain additional first-
1654     * or last-line padding.
1655     */
1656    public int getLineHeight() {
1657        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1658    }
1659
1660    /**
1661     * @return the Layout that is currently being used to display the text.
1662     * This can be null if the text or width has recently changes.
1663     */
1664    public final Layout getLayout() {
1665        return mLayout;
1666    }
1667
1668    /**
1669     * @return the Layout that is currently being used to display the hint text.
1670     * This can be null.
1671     */
1672    final Layout getHintLayout() {
1673        return mHintLayout;
1674    }
1675
1676    /**
1677     * Retrieve the {@link android.content.UndoManager} that is currently associated
1678     * with this TextView.  By default there is no associated UndoManager, so null
1679     * is returned.  One can be associated with the TextView through
1680     * {@link #setUndoManager(android.content.UndoManager, String)}
1681     *
1682     * @hide
1683     */
1684    public final UndoManager getUndoManager() {
1685        // TODO: Consider supporting a global undo manager.
1686        throw new UnsupportedOperationException("not implemented");
1687    }
1688
1689    /**
1690     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1691     * done, all edit operations on the TextView will result in appropriate
1692     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1693     * stack.
1694     *
1695     * @param undoManager The {@link android.content.UndoManager} to associate with
1696     * this TextView, or null to clear any existing association.
1697     * @param tag String tag identifying this particular TextView owner in the
1698     * UndoManager.  This is used to keep the correct association with the
1699     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1700     *
1701     * @hide
1702     */
1703    public final void setUndoManager(UndoManager undoManager, String tag) {
1704        // TODO: Consider supporting a global undo manager. An implementation will need to:
1705        // * createEditorIfNeeded()
1706        // * Promote to BufferType.EDITABLE if needed.
1707        // * Update the UndoManager and UndoOwner.
1708        // Likewise it will need to be able to restore the default UndoManager.
1709        throw new UnsupportedOperationException("not implemented");
1710    }
1711
1712    /**
1713     * @return the current key listener for this TextView.
1714     * This will frequently be null for non-EditText TextViews.
1715     *
1716     * @attr ref android.R.styleable#TextView_numeric
1717     * @attr ref android.R.styleable#TextView_digits
1718     * @attr ref android.R.styleable#TextView_phoneNumber
1719     * @attr ref android.R.styleable#TextView_inputMethod
1720     * @attr ref android.R.styleable#TextView_capitalize
1721     * @attr ref android.R.styleable#TextView_autoText
1722     */
1723    public final KeyListener getKeyListener() {
1724        return mEditor == null ? null : mEditor.mKeyListener;
1725    }
1726
1727    /**
1728     * Sets the key listener to be used with this TextView.  This can be null
1729     * to disallow user input.  Note that this method has significant and
1730     * subtle interactions with soft keyboards and other input method:
1731     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1732     * for important details.  Calling this method will replace the current
1733     * content type of the text view with the content type returned by the
1734     * key listener.
1735     * <p>
1736     * Be warned that if you want a TextView with a key listener or movement
1737     * method not to be focusable, or if you want a TextView without a
1738     * key listener or movement method to be focusable, you must call
1739     * {@link #setFocusable} again after calling this to get the focusability
1740     * back the way you want it.
1741     *
1742     * @attr ref android.R.styleable#TextView_numeric
1743     * @attr ref android.R.styleable#TextView_digits
1744     * @attr ref android.R.styleable#TextView_phoneNumber
1745     * @attr ref android.R.styleable#TextView_inputMethod
1746     * @attr ref android.R.styleable#TextView_capitalize
1747     * @attr ref android.R.styleable#TextView_autoText
1748     */
1749    public void setKeyListener(KeyListener input) {
1750        setKeyListenerOnly(input);
1751        fixFocusableAndClickableSettings();
1752
1753        if (input != null) {
1754            createEditorIfNeeded();
1755            try {
1756                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1757            } catch (IncompatibleClassChangeError e) {
1758                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1759            }
1760            // Change inputType, without affecting transformation.
1761            // No need to applySingleLine since mSingleLine is unchanged.
1762            setInputTypeSingleLine(mSingleLine);
1763        } else {
1764            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1765        }
1766
1767        InputMethodManager imm = InputMethodManager.peekInstance();
1768        if (imm != null) imm.restartInput(this);
1769    }
1770
1771    private void setKeyListenerOnly(KeyListener input) {
1772        if (mEditor == null && input == null) return; // null is the default value
1773
1774        createEditorIfNeeded();
1775        if (mEditor.mKeyListener != input) {
1776            mEditor.mKeyListener = input;
1777            if (input != null && !(mText instanceof Editable)) {
1778                setText(mText);
1779            }
1780
1781            setFilters((Editable) mText, mFilters);
1782        }
1783    }
1784
1785    /**
1786     * @return the movement method being used for this TextView.
1787     * This will frequently be null for non-EditText TextViews.
1788     */
1789    public final MovementMethod getMovementMethod() {
1790        return mMovement;
1791    }
1792
1793    /**
1794     * Sets the movement method (arrow key handler) to be used for
1795     * this TextView.  This can be null to disallow using the arrow keys
1796     * to move the cursor or scroll the view.
1797     * <p>
1798     * Be warned that if you want a TextView with a key listener or movement
1799     * method not to be focusable, or if you want a TextView without a
1800     * key listener or movement method to be focusable, you must call
1801     * {@link #setFocusable} again after calling this to get the focusability
1802     * back the way you want it.
1803     */
1804    public final void setMovementMethod(MovementMethod movement) {
1805        if (mMovement != movement) {
1806            mMovement = movement;
1807
1808            if (movement != null && !(mText instanceof Spannable)) {
1809                setText(mText);
1810            }
1811
1812            fixFocusableAndClickableSettings();
1813
1814            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1815            // mMovement
1816            if (mEditor != null) mEditor.prepareCursorControllers();
1817        }
1818    }
1819
1820    private void fixFocusableAndClickableSettings() {
1821        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1822            setFocusable(true);
1823            setClickable(true);
1824            setLongClickable(true);
1825        } else {
1826            setFocusable(false);
1827            setClickable(false);
1828            setLongClickable(false);
1829        }
1830    }
1831
1832    /**
1833     * @return the current transformation method for this TextView.
1834     * This will frequently be null except for single-line and password
1835     * fields.
1836     *
1837     * @attr ref android.R.styleable#TextView_password
1838     * @attr ref android.R.styleable#TextView_singleLine
1839     */
1840    public final TransformationMethod getTransformationMethod() {
1841        return mTransformation;
1842    }
1843
1844    /**
1845     * Sets the transformation that is applied to the text that this
1846     * TextView is displaying.
1847     *
1848     * @attr ref android.R.styleable#TextView_password
1849     * @attr ref android.R.styleable#TextView_singleLine
1850     */
1851    public final void setTransformationMethod(TransformationMethod method) {
1852        if (method == mTransformation) {
1853            // Avoid the setText() below if the transformation is
1854            // the same.
1855            return;
1856        }
1857        if (mTransformation != null) {
1858            if (mText instanceof Spannable) {
1859                ((Spannable) mText).removeSpan(mTransformation);
1860            }
1861        }
1862
1863        mTransformation = method;
1864
1865        if (method instanceof TransformationMethod2) {
1866            TransformationMethod2 method2 = (TransformationMethod2) method;
1867            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1868            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1869        } else {
1870            mAllowTransformationLengthChange = false;
1871        }
1872
1873        setText(mText);
1874
1875        if (hasPasswordTransformationMethod()) {
1876            notifyViewAccessibilityStateChangedIfNeeded(
1877                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1878        }
1879    }
1880
1881    /**
1882     * Returns the top padding of the view, plus space for the top
1883     * Drawable if any.
1884     */
1885    public int getCompoundPaddingTop() {
1886        final Drawables dr = mDrawables;
1887        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1888            return mPaddingTop;
1889        } else {
1890            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1891        }
1892    }
1893
1894    /**
1895     * Returns the bottom padding of the view, plus space for the bottom
1896     * Drawable if any.
1897     */
1898    public int getCompoundPaddingBottom() {
1899        final Drawables dr = mDrawables;
1900        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1901            return mPaddingBottom;
1902        } else {
1903            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1904        }
1905    }
1906
1907    /**
1908     * Returns the left padding of the view, plus space for the left
1909     * Drawable if any.
1910     */
1911    public int getCompoundPaddingLeft() {
1912        final Drawables dr = mDrawables;
1913        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1914            return mPaddingLeft;
1915        } else {
1916            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1917        }
1918    }
1919
1920    /**
1921     * Returns the right padding of the view, plus space for the right
1922     * Drawable if any.
1923     */
1924    public int getCompoundPaddingRight() {
1925        final Drawables dr = mDrawables;
1926        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1927            return mPaddingRight;
1928        } else {
1929            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1930        }
1931    }
1932
1933    /**
1934     * Returns the start padding of the view, plus space for the start
1935     * Drawable if any.
1936     */
1937    public int getCompoundPaddingStart() {
1938        resolveDrawables();
1939        switch(getLayoutDirection()) {
1940            default:
1941            case LAYOUT_DIRECTION_LTR:
1942                return getCompoundPaddingLeft();
1943            case LAYOUT_DIRECTION_RTL:
1944                return getCompoundPaddingRight();
1945        }
1946    }
1947
1948    /**
1949     * Returns the end padding of the view, plus space for the end
1950     * Drawable if any.
1951     */
1952    public int getCompoundPaddingEnd() {
1953        resolveDrawables();
1954        switch(getLayoutDirection()) {
1955            default:
1956            case LAYOUT_DIRECTION_LTR:
1957                return getCompoundPaddingRight();
1958            case LAYOUT_DIRECTION_RTL:
1959                return getCompoundPaddingLeft();
1960        }
1961    }
1962
1963    /**
1964     * Returns the extended top padding of the view, including both the
1965     * top Drawable if any and any extra space to keep more than maxLines
1966     * of text from showing.  It is only valid to call this after measuring.
1967     */
1968    public int getExtendedPaddingTop() {
1969        if (mMaxMode != LINES) {
1970            return getCompoundPaddingTop();
1971        }
1972
1973        if (mLayout == null) {
1974            assumeLayout();
1975        }
1976
1977        if (mLayout.getLineCount() <= mMaximum) {
1978            return getCompoundPaddingTop();
1979        }
1980
1981        int top = getCompoundPaddingTop();
1982        int bottom = getCompoundPaddingBottom();
1983        int viewht = getHeight() - top - bottom;
1984        int layoutht = mLayout.getLineTop(mMaximum);
1985
1986        if (layoutht >= viewht) {
1987            return top;
1988        }
1989
1990        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1991        if (gravity == Gravity.TOP) {
1992            return top;
1993        } else if (gravity == Gravity.BOTTOM) {
1994            return top + viewht - layoutht;
1995        } else { // (gravity == Gravity.CENTER_VERTICAL)
1996            return top + (viewht - layoutht) / 2;
1997        }
1998    }
1999
2000    /**
2001     * Returns the extended bottom padding of the view, including both the
2002     * bottom Drawable if any and any extra space to keep more than maxLines
2003     * of text from showing.  It is only valid to call this after measuring.
2004     */
2005    public int getExtendedPaddingBottom() {
2006        if (mMaxMode != LINES) {
2007            return getCompoundPaddingBottom();
2008        }
2009
2010        if (mLayout == null) {
2011            assumeLayout();
2012        }
2013
2014        if (mLayout.getLineCount() <= mMaximum) {
2015            return getCompoundPaddingBottom();
2016        }
2017
2018        int top = getCompoundPaddingTop();
2019        int bottom = getCompoundPaddingBottom();
2020        int viewht = getHeight() - top - bottom;
2021        int layoutht = mLayout.getLineTop(mMaximum);
2022
2023        if (layoutht >= viewht) {
2024            return bottom;
2025        }
2026
2027        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2028        if (gravity == Gravity.TOP) {
2029            return bottom + viewht - layoutht;
2030        } else if (gravity == Gravity.BOTTOM) {
2031            return bottom;
2032        } else { // (gravity == Gravity.CENTER_VERTICAL)
2033            return bottom + (viewht - layoutht) / 2;
2034        }
2035    }
2036
2037    /**
2038     * Returns the total left padding of the view, including the left
2039     * Drawable if any.
2040     */
2041    public int getTotalPaddingLeft() {
2042        return getCompoundPaddingLeft();
2043    }
2044
2045    /**
2046     * Returns the total right padding of the view, including the right
2047     * Drawable if any.
2048     */
2049    public int getTotalPaddingRight() {
2050        return getCompoundPaddingRight();
2051    }
2052
2053    /**
2054     * Returns the total start padding of the view, including the start
2055     * Drawable if any.
2056     */
2057    public int getTotalPaddingStart() {
2058        return getCompoundPaddingStart();
2059    }
2060
2061    /**
2062     * Returns the total end padding of the view, including the end
2063     * Drawable if any.
2064     */
2065    public int getTotalPaddingEnd() {
2066        return getCompoundPaddingEnd();
2067    }
2068
2069    /**
2070     * Returns the total top padding of the view, including the top
2071     * Drawable if any, the extra space to keep more than maxLines
2072     * from showing, and the vertical offset for gravity, if any.
2073     */
2074    public int getTotalPaddingTop() {
2075        return getExtendedPaddingTop() + getVerticalOffset(true);
2076    }
2077
2078    /**
2079     * Returns the total bottom padding of the view, including the bottom
2080     * Drawable if any, the extra space to keep more than maxLines
2081     * from showing, and the vertical offset for gravity, if any.
2082     */
2083    public int getTotalPaddingBottom() {
2084        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2085    }
2086
2087    /**
2088     * Sets the Drawables (if any) to appear to the left of, above, to the
2089     * right of, and below the text. Use {@code null} if you do not want a
2090     * Drawable there. The Drawables must already have had
2091     * {@link Drawable#setBounds} called.
2092     * <p>
2093     * Calling this method will overwrite any Drawables previously set using
2094     * {@link #setCompoundDrawablesRelative} or related methods.
2095     *
2096     * @attr ref android.R.styleable#TextView_drawableLeft
2097     * @attr ref android.R.styleable#TextView_drawableTop
2098     * @attr ref android.R.styleable#TextView_drawableRight
2099     * @attr ref android.R.styleable#TextView_drawableBottom
2100     */
2101    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2102            @Nullable Drawable right, @Nullable Drawable bottom) {
2103        Drawables dr = mDrawables;
2104
2105        // We're switching to absolute, discard relative.
2106        if (dr != null) {
2107            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2108            dr.mDrawableStart = null;
2109            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2110            dr.mDrawableEnd = null;
2111            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2112            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2113        }
2114
2115        final boolean drawables = left != null || top != null || right != null || bottom != null;
2116        if (!drawables) {
2117            // Clearing drawables...  can we free the data structure?
2118            if (dr != null) {
2119                if (dr.mDrawablePadding == 0) {
2120                    mDrawables = null;
2121                } else {
2122                    // We need to retain the last set padding, so just clear
2123                    // out all of the fields in the existing structure.
2124                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2125                        if (dr.mShowing[i] != null) {
2126                            dr.mShowing[i].setCallback(null);
2127                        }
2128                        dr.mShowing[i] = null;
2129                    }
2130                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2131                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2132                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2133                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2134                }
2135            }
2136        } else {
2137            if (dr == null) {
2138                mDrawables = dr = new Drawables(getContext());
2139            }
2140
2141            mDrawables.mOverride = false;
2142
2143            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2144                dr.mShowing[Drawables.LEFT].setCallback(null);
2145            }
2146            dr.mShowing[Drawables.LEFT] = left;
2147
2148            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2149                dr.mShowing[Drawables.TOP].setCallback(null);
2150            }
2151            dr.mShowing[Drawables.TOP] = top;
2152
2153            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2154                dr.mShowing[Drawables.RIGHT].setCallback(null);
2155            }
2156            dr.mShowing[Drawables.RIGHT] = right;
2157
2158            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2159                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2160            }
2161            dr.mShowing[Drawables.BOTTOM] = bottom;
2162
2163            final Rect compoundRect = dr.mCompoundRect;
2164            int[] state;
2165
2166            state = getDrawableState();
2167
2168            if (left != null) {
2169                left.setState(state);
2170                left.copyBounds(compoundRect);
2171                left.setCallback(this);
2172                dr.mDrawableSizeLeft = compoundRect.width();
2173                dr.mDrawableHeightLeft = compoundRect.height();
2174            } else {
2175                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2176            }
2177
2178            if (right != null) {
2179                right.setState(state);
2180                right.copyBounds(compoundRect);
2181                right.setCallback(this);
2182                dr.mDrawableSizeRight = compoundRect.width();
2183                dr.mDrawableHeightRight = compoundRect.height();
2184            } else {
2185                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2186            }
2187
2188            if (top != null) {
2189                top.setState(state);
2190                top.copyBounds(compoundRect);
2191                top.setCallback(this);
2192                dr.mDrawableSizeTop = compoundRect.height();
2193                dr.mDrawableWidthTop = compoundRect.width();
2194            } else {
2195                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2196            }
2197
2198            if (bottom != null) {
2199                bottom.setState(state);
2200                bottom.copyBounds(compoundRect);
2201                bottom.setCallback(this);
2202                dr.mDrawableSizeBottom = compoundRect.height();
2203                dr.mDrawableWidthBottom = compoundRect.width();
2204            } else {
2205                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2206            }
2207        }
2208
2209        // Save initial left/right drawables
2210        if (dr != null) {
2211            dr.mDrawableLeftInitial = left;
2212            dr.mDrawableRightInitial = right;
2213        }
2214
2215        resetResolvedDrawables();
2216        resolveDrawables();
2217        applyCompoundDrawableTint();
2218        invalidate();
2219        requestLayout();
2220    }
2221
2222    /**
2223     * Sets the Drawables (if any) to appear to the left of, above, to the
2224     * right of, and below the text. Use 0 if you do not want a Drawable there.
2225     * The Drawables' bounds will be set to their intrinsic bounds.
2226     * <p>
2227     * Calling this method will overwrite any Drawables previously set using
2228     * {@link #setCompoundDrawablesRelative} or related methods.
2229     *
2230     * @param left Resource identifier of the left Drawable.
2231     * @param top Resource identifier of the top Drawable.
2232     * @param right Resource identifier of the right Drawable.
2233     * @param bottom Resource identifier of the bottom Drawable.
2234     *
2235     * @attr ref android.R.styleable#TextView_drawableLeft
2236     * @attr ref android.R.styleable#TextView_drawableTop
2237     * @attr ref android.R.styleable#TextView_drawableRight
2238     * @attr ref android.R.styleable#TextView_drawableBottom
2239     */
2240    @android.view.RemotableViewMethod
2241    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2242            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2243        final Context context = getContext();
2244        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2245                top != 0 ? context.getDrawable(top) : null,
2246                right != 0 ? context.getDrawable(right) : null,
2247                bottom != 0 ? context.getDrawable(bottom) : null);
2248    }
2249
2250    /**
2251     * Sets the Drawables (if any) to appear to the left of, above, to the
2252     * right of, and below the text. Use {@code null} if you do not want a
2253     * Drawable there. The Drawables' bounds will be set to their intrinsic
2254     * bounds.
2255     * <p>
2256     * Calling this method will overwrite any Drawables previously set using
2257     * {@link #setCompoundDrawablesRelative} or related methods.
2258     *
2259     * @attr ref android.R.styleable#TextView_drawableLeft
2260     * @attr ref android.R.styleable#TextView_drawableTop
2261     * @attr ref android.R.styleable#TextView_drawableRight
2262     * @attr ref android.R.styleable#TextView_drawableBottom
2263     */
2264    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2265            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2266
2267        if (left != null) {
2268            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2269        }
2270        if (right != null) {
2271            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2272        }
2273        if (top != null) {
2274            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2275        }
2276        if (bottom != null) {
2277            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2278        }
2279        setCompoundDrawables(left, top, right, bottom);
2280    }
2281
2282    /**
2283     * Sets the Drawables (if any) to appear to the start of, above, to the end
2284     * of, and below the text. Use {@code null} if you do not want a Drawable
2285     * there. The Drawables must already have had {@link Drawable#setBounds}
2286     * called.
2287     * <p>
2288     * Calling this method will overwrite any Drawables previously set using
2289     * {@link #setCompoundDrawables} or related methods.
2290     *
2291     * @attr ref android.R.styleable#TextView_drawableStart
2292     * @attr ref android.R.styleable#TextView_drawableTop
2293     * @attr ref android.R.styleable#TextView_drawableEnd
2294     * @attr ref android.R.styleable#TextView_drawableBottom
2295     */
2296    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2297            @Nullable Drawable end, @Nullable Drawable bottom) {
2298        Drawables dr = mDrawables;
2299
2300        // We're switching to relative, discard absolute.
2301        if (dr != null) {
2302            if (dr.mShowing[Drawables.LEFT] != null) {
2303                dr.mShowing[Drawables.LEFT].setCallback(null);
2304            }
2305            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2306            if (dr.mShowing[Drawables.RIGHT] != null) {
2307                dr.mShowing[Drawables.RIGHT].setCallback(null);
2308            }
2309            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2310            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2311            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2312        }
2313
2314        final boolean drawables = start != null || top != null
2315                || end != null || bottom != null;
2316
2317        if (!drawables) {
2318            // Clearing drawables...  can we free the data structure?
2319            if (dr != null) {
2320                if (dr.mDrawablePadding == 0) {
2321                    mDrawables = null;
2322                } else {
2323                    // We need to retain the last set padding, so just clear
2324                    // out all of the fields in the existing structure.
2325                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2326                    dr.mDrawableStart = null;
2327                    if (dr.mShowing[Drawables.TOP] != null) {
2328                        dr.mShowing[Drawables.TOP].setCallback(null);
2329                    }
2330                    dr.mShowing[Drawables.TOP] = null;
2331                    if (dr.mDrawableEnd != null) {
2332                        dr.mDrawableEnd.setCallback(null);
2333                    }
2334                    dr.mDrawableEnd = null;
2335                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2336                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2337                    }
2338                    dr.mShowing[Drawables.BOTTOM] = null;
2339                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2340                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2341                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2342                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2343                }
2344            }
2345        } else {
2346            if (dr == null) {
2347                mDrawables = dr = new Drawables(getContext());
2348            }
2349
2350            mDrawables.mOverride = true;
2351
2352            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2353                dr.mDrawableStart.setCallback(null);
2354            }
2355            dr.mDrawableStart = start;
2356
2357            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2358                dr.mShowing[Drawables.TOP].setCallback(null);
2359            }
2360            dr.mShowing[Drawables.TOP] = top;
2361
2362            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2363                dr.mDrawableEnd.setCallback(null);
2364            }
2365            dr.mDrawableEnd = end;
2366
2367            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2368                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2369            }
2370            dr.mShowing[Drawables.BOTTOM] = bottom;
2371
2372            final Rect compoundRect = dr.mCompoundRect;
2373            int[] state;
2374
2375            state = getDrawableState();
2376
2377            if (start != null) {
2378                start.setState(state);
2379                start.copyBounds(compoundRect);
2380                start.setCallback(this);
2381                dr.mDrawableSizeStart = compoundRect.width();
2382                dr.mDrawableHeightStart = compoundRect.height();
2383            } else {
2384                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2385            }
2386
2387            if (end != null) {
2388                end.setState(state);
2389                end.copyBounds(compoundRect);
2390                end.setCallback(this);
2391                dr.mDrawableSizeEnd = compoundRect.width();
2392                dr.mDrawableHeightEnd = compoundRect.height();
2393            } else {
2394                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2395            }
2396
2397            if (top != null) {
2398                top.setState(state);
2399                top.copyBounds(compoundRect);
2400                top.setCallback(this);
2401                dr.mDrawableSizeTop = compoundRect.height();
2402                dr.mDrawableWidthTop = compoundRect.width();
2403            } else {
2404                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2405            }
2406
2407            if (bottom != null) {
2408                bottom.setState(state);
2409                bottom.copyBounds(compoundRect);
2410                bottom.setCallback(this);
2411                dr.mDrawableSizeBottom = compoundRect.height();
2412                dr.mDrawableWidthBottom = compoundRect.width();
2413            } else {
2414                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2415            }
2416        }
2417
2418        resetResolvedDrawables();
2419        resolveDrawables();
2420        invalidate();
2421        requestLayout();
2422    }
2423
2424    /**
2425     * Sets the Drawables (if any) to appear to the start of, above, to the end
2426     * of, and below the text. Use 0 if you do not want a Drawable there. The
2427     * Drawables' bounds will be set to their intrinsic bounds.
2428     * <p>
2429     * Calling this method will overwrite any Drawables previously set using
2430     * {@link #setCompoundDrawables} or related methods.
2431     *
2432     * @param start Resource identifier of the start Drawable.
2433     * @param top Resource identifier of the top Drawable.
2434     * @param end Resource identifier of the end Drawable.
2435     * @param bottom Resource identifier of the bottom Drawable.
2436     *
2437     * @attr ref android.R.styleable#TextView_drawableStart
2438     * @attr ref android.R.styleable#TextView_drawableTop
2439     * @attr ref android.R.styleable#TextView_drawableEnd
2440     * @attr ref android.R.styleable#TextView_drawableBottom
2441     */
2442    @android.view.RemotableViewMethod
2443    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2444            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2445        final Context context = getContext();
2446        setCompoundDrawablesRelativeWithIntrinsicBounds(
2447                start != 0 ? context.getDrawable(start) : null,
2448                top != 0 ? context.getDrawable(top) : null,
2449                end != 0 ? context.getDrawable(end) : null,
2450                bottom != 0 ? context.getDrawable(bottom) : null);
2451    }
2452
2453    /**
2454     * Sets the Drawables (if any) to appear to the start of, above, to the end
2455     * of, and below the text. Use {@code null} if you do not want a Drawable
2456     * there. The Drawables' bounds will be set to their intrinsic bounds.
2457     * <p>
2458     * Calling this method will overwrite any Drawables previously set using
2459     * {@link #setCompoundDrawables} or related methods.
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    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2467            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2468
2469        if (start != null) {
2470            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2471        }
2472        if (end != null) {
2473            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2474        }
2475        if (top != null) {
2476            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2477        }
2478        if (bottom != null) {
2479            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2480        }
2481        setCompoundDrawablesRelative(start, top, end, bottom);
2482    }
2483
2484    /**
2485     * Returns drawables for the left, top, right, and bottom borders.
2486     *
2487     * @attr ref android.R.styleable#TextView_drawableLeft
2488     * @attr ref android.R.styleable#TextView_drawableTop
2489     * @attr ref android.R.styleable#TextView_drawableRight
2490     * @attr ref android.R.styleable#TextView_drawableBottom
2491     */
2492    @NonNull
2493    public Drawable[] getCompoundDrawables() {
2494        final Drawables dr = mDrawables;
2495        if (dr != null) {
2496            return dr.mShowing.clone();
2497        } else {
2498            return new Drawable[] { null, null, null, null };
2499        }
2500    }
2501
2502    /**
2503     * Returns drawables for the start, top, end, and bottom borders.
2504     *
2505     * @attr ref android.R.styleable#TextView_drawableStart
2506     * @attr ref android.R.styleable#TextView_drawableTop
2507     * @attr ref android.R.styleable#TextView_drawableEnd
2508     * @attr ref android.R.styleable#TextView_drawableBottom
2509     */
2510    @NonNull
2511    public Drawable[] getCompoundDrawablesRelative() {
2512        final Drawables dr = mDrawables;
2513        if (dr != null) {
2514            return new Drawable[] {
2515                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2516                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2517            };
2518        } else {
2519            return new Drawable[] { null, null, null, null };
2520        }
2521    }
2522
2523    /**
2524     * Sets the size of the padding between the compound drawables and
2525     * the text.
2526     *
2527     * @attr ref android.R.styleable#TextView_drawablePadding
2528     */
2529    @android.view.RemotableViewMethod
2530    public void setCompoundDrawablePadding(int pad) {
2531        Drawables dr = mDrawables;
2532        if (pad == 0) {
2533            if (dr != null) {
2534                dr.mDrawablePadding = pad;
2535            }
2536        } else {
2537            if (dr == null) {
2538                mDrawables = dr = new Drawables(getContext());
2539            }
2540            dr.mDrawablePadding = pad;
2541        }
2542
2543        invalidate();
2544        requestLayout();
2545    }
2546
2547    /**
2548     * Returns the padding between the compound drawables and the text.
2549     *
2550     * @attr ref android.R.styleable#TextView_drawablePadding
2551     */
2552    public int getCompoundDrawablePadding() {
2553        final Drawables dr = mDrawables;
2554        return dr != null ? dr.mDrawablePadding : 0;
2555    }
2556
2557    /**
2558     * Applies a tint to the compound drawables. Does not modify the
2559     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2560     * <p>
2561     * Subsequent calls to
2562     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2563     * and related methods will automatically mutate the drawables and apply
2564     * the specified tint and tint mode using
2565     * {@link Drawable#setTintList(ColorStateList)}.
2566     *
2567     * @param tint the tint to apply, may be {@code null} to clear tint
2568     *
2569     * @attr ref android.R.styleable#TextView_drawableTint
2570     * @see #getCompoundDrawableTintList()
2571     * @see Drawable#setTintList(ColorStateList)
2572     */
2573    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2574        if (mDrawables == null) {
2575            mDrawables = new Drawables(getContext());
2576        }
2577        mDrawables.mTintList = tint;
2578        mDrawables.mHasTint = true;
2579
2580        applyCompoundDrawableTint();
2581    }
2582
2583    /**
2584     * @return the tint applied to the compound drawables
2585     * @attr ref android.R.styleable#TextView_drawableTint
2586     * @see #setCompoundDrawableTintList(ColorStateList)
2587     */
2588    public ColorStateList getCompoundDrawableTintList() {
2589        return mDrawables != null ? mDrawables.mTintList : null;
2590    }
2591
2592    /**
2593     * Specifies the blending mode used to apply the tint specified by
2594     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2595     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2596     *
2597     * @param tintMode the blending mode used to apply the tint, may be
2598     *                 {@code null} to clear tint
2599     * @attr ref android.R.styleable#TextView_drawableTintMode
2600     * @see #setCompoundDrawableTintList(ColorStateList)
2601     * @see Drawable#setTintMode(PorterDuff.Mode)
2602     */
2603    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2604        if (mDrawables == null) {
2605            mDrawables = new Drawables(getContext());
2606        }
2607        mDrawables.mTintMode = tintMode;
2608        mDrawables.mHasTintMode = true;
2609
2610        applyCompoundDrawableTint();
2611    }
2612
2613    /**
2614     * Returns the blending mode used to apply the tint to the compound
2615     * drawables, if specified.
2616     *
2617     * @return the blending mode used to apply the tint to the compound
2618     *         drawables
2619     * @attr ref android.R.styleable#TextView_drawableTintMode
2620     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2621     */
2622    public PorterDuff.Mode getCompoundDrawableTintMode() {
2623        return mDrawables != null ? mDrawables.mTintMode : null;
2624    }
2625
2626    private void applyCompoundDrawableTint() {
2627        if (mDrawables == null) {
2628            return;
2629        }
2630
2631        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2632            final ColorStateList tintList = mDrawables.mTintList;
2633            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2634            final boolean hasTint = mDrawables.mHasTint;
2635            final boolean hasTintMode = mDrawables.mHasTintMode;
2636            final int[] state = getDrawableState();
2637
2638            for (Drawable dr : mDrawables.mShowing) {
2639                if (dr == null) {
2640                    continue;
2641                }
2642
2643                if (dr == mDrawables.mDrawableError) {
2644                    // From a developer's perspective, the error drawable isn't
2645                    // a compound drawable. Don't apply the generic compound
2646                    // drawable tint to it.
2647                    continue;
2648                }
2649
2650                dr.mutate();
2651
2652                if (hasTint) {
2653                    dr.setTintList(tintList);
2654                }
2655
2656                if (hasTintMode) {
2657                    dr.setTintMode(tintMode);
2658                }
2659
2660                // The drawable (or one of its children) may not have been
2661                // stateful before applying the tint, so let's try again.
2662                if (dr.isStateful()) {
2663                    dr.setState(state);
2664                }
2665            }
2666        }
2667    }
2668
2669    @Override
2670    public void setPadding(int left, int top, int right, int bottom) {
2671        if (left != mPaddingLeft ||
2672            right != mPaddingRight ||
2673            top != mPaddingTop ||
2674            bottom != mPaddingBottom) {
2675            nullLayouts();
2676        }
2677
2678        // the super call will requestLayout()
2679        super.setPadding(left, top, right, bottom);
2680        invalidate();
2681    }
2682
2683    @Override
2684    public void setPaddingRelative(int start, int top, int end, int bottom) {
2685        if (start != getPaddingStart() ||
2686            end != getPaddingEnd() ||
2687            top != mPaddingTop ||
2688            bottom != mPaddingBottom) {
2689            nullLayouts();
2690        }
2691
2692        // the super call will requestLayout()
2693        super.setPaddingRelative(start, top, end, bottom);
2694        invalidate();
2695    }
2696
2697    /**
2698     * Gets the autolink mask of the text.  See {@link
2699     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2700     * possible values.
2701     *
2702     * @attr ref android.R.styleable#TextView_autoLink
2703     */
2704    public final int getAutoLinkMask() {
2705        return mAutoLinkMask;
2706    }
2707
2708    /**
2709     * Sets the text appearance from the specified style resource.
2710     * <p>
2711     * Use a framework-defined {@code TextAppearance} style like
2712     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2713     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2714     * set of attributes that can be used in a custom style.
2715     *
2716     * @param resId the resource identifier of the style to apply
2717     * @attr ref android.R.styleable#TextView_textAppearance
2718     */
2719    @SuppressWarnings("deprecation")
2720    public void setTextAppearance(@StyleRes int resId) {
2721        setTextAppearance(mContext, resId);
2722    }
2723
2724    /**
2725     * Sets the text color, size, style, hint color, and highlight color
2726     * from the specified TextAppearance resource.
2727     *
2728     * @deprecated Use {@link #setTextAppearance(int)} instead.
2729     */
2730    @Deprecated
2731    public void setTextAppearance(Context context, @StyleRes int resId) {
2732        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2733
2734        final int textColorHighlight = ta.getColor(
2735                R.styleable.TextAppearance_textColorHighlight, 0);
2736        if (textColorHighlight != 0) {
2737            setHighlightColor(textColorHighlight);
2738        }
2739
2740        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2741        if (textColor != null) {
2742            setTextColor(textColor);
2743        }
2744
2745        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2746        if (textSize != 0) {
2747            setRawTextSize(textSize);
2748        }
2749
2750        final ColorStateList textColorHint = ta.getColorStateList(
2751                R.styleable.TextAppearance_textColorHint);
2752        if (textColorHint != null) {
2753            setHintTextColor(textColorHint);
2754        }
2755
2756        final ColorStateList textColorLink = ta.getColorStateList(
2757                R.styleable.TextAppearance_textColorLink);
2758        if (textColorLink != null) {
2759            setLinkTextColor(textColorLink);
2760        }
2761
2762        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2763        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2764        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2765        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2766
2767        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2768        if (shadowColor != 0) {
2769            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2770            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2771            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2772            setShadowLayer(r, dx, dy, shadowColor);
2773        }
2774
2775        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2776            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2777        }
2778
2779        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2780            setElegantTextHeight(ta.getBoolean(
2781                R.styleable.TextAppearance_elegantTextHeight, false));
2782        }
2783
2784        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2785            setLetterSpacing(ta.getFloat(
2786                R.styleable.TextAppearance_letterSpacing, 0));
2787        }
2788
2789        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2790            setFontFeatureSettings(ta.getString(
2791                R.styleable.TextAppearance_fontFeatureSettings));
2792        }
2793
2794        ta.recycle();
2795    }
2796
2797    /**
2798     * Get the default {@link Locale} of the text in this TextView.
2799     * @return the default {@link Locale} of the text in this TextView.
2800     */
2801    public Locale getTextLocale() {
2802        return mTextPaint.getTextLocale();
2803    }
2804
2805    /**
2806     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2807     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2808     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2809     *
2810     * @param locale the {@link Locale} for drawing text, must not be null.
2811     *
2812     * @see Paint#setTextLocale
2813     */
2814    public void setTextLocale(Locale locale) {
2815        mLocaleChanged = true;
2816        mTextPaint.setTextLocale(locale);
2817    }
2818
2819    @Override
2820    protected void onConfigurationChanged(Configuration newConfig) {
2821        super.onConfigurationChanged(newConfig);
2822        if (!mLocaleChanged) {
2823            mTextPaint.setTextLocale(Locale.getDefault());
2824        }
2825    }
2826
2827    /**
2828     * @return the size (in pixels) of the default text size in this TextView.
2829     */
2830    @ViewDebug.ExportedProperty(category = "text")
2831    public float getTextSize() {
2832        return mTextPaint.getTextSize();
2833    }
2834
2835    /**
2836     * @return the size (in scaled pixels) of thee default text size in this TextView.
2837     * @hide
2838     */
2839    @ViewDebug.ExportedProperty(category = "text")
2840    public float getScaledTextSize() {
2841        return mTextPaint.getTextSize() / mTextPaint.density;
2842    }
2843
2844    /** @hide */
2845    @ViewDebug.ExportedProperty(category = "text", mapping = {
2846            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2847            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2848            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2849            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2850    })
2851    public int getTypefaceStyle() {
2852        Typeface typeface = mTextPaint.getTypeface();
2853        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2854    }
2855
2856    /**
2857     * Set the default text size to the given value, interpreted as "scaled
2858     * pixel" units.  This size is adjusted based on the current density and
2859     * user font size preference.
2860     *
2861     * @param size The scaled pixel size.
2862     *
2863     * @attr ref android.R.styleable#TextView_textSize
2864     */
2865    @android.view.RemotableViewMethod
2866    public void setTextSize(float size) {
2867        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2868    }
2869
2870    /**
2871     * Set the default text size to a given unit and value.  See {@link
2872     * TypedValue} for the possible dimension units.
2873     *
2874     * @param unit The desired dimension unit.
2875     * @param size The desired size in the given units.
2876     *
2877     * @attr ref android.R.styleable#TextView_textSize
2878     */
2879    public void setTextSize(int unit, float size) {
2880        Context c = getContext();
2881        Resources r;
2882
2883        if (c == null)
2884            r = Resources.getSystem();
2885        else
2886            r = c.getResources();
2887
2888        setRawTextSize(TypedValue.applyDimension(
2889                unit, size, r.getDisplayMetrics()));
2890    }
2891
2892    private void setRawTextSize(float size) {
2893        if (size != mTextPaint.getTextSize()) {
2894            mTextPaint.setTextSize(size);
2895
2896            if (mLayout != null) {
2897                nullLayouts();
2898                requestLayout();
2899                invalidate();
2900            }
2901        }
2902    }
2903
2904    /**
2905     * @return the extent by which text is currently being stretched
2906     * horizontally.  This will usually be 1.
2907     */
2908    public float getTextScaleX() {
2909        return mTextPaint.getTextScaleX();
2910    }
2911
2912    /**
2913     * Sets the extent by which text should be stretched horizontally.
2914     *
2915     * @attr ref android.R.styleable#TextView_textScaleX
2916     */
2917    @android.view.RemotableViewMethod
2918    public void setTextScaleX(float size) {
2919        if (size != mTextPaint.getTextScaleX()) {
2920            mUserSetTextScaleX = true;
2921            mTextPaint.setTextScaleX(size);
2922
2923            if (mLayout != null) {
2924                nullLayouts();
2925                requestLayout();
2926                invalidate();
2927            }
2928        }
2929    }
2930
2931    /**
2932     * Sets the typeface and style in which the text should be displayed.
2933     * Note that not all Typeface families actually have bold and italic
2934     * variants, so you may need to use
2935     * {@link #setTypeface(Typeface, int)} to get the appearance
2936     * that you actually want.
2937     *
2938     * @see #getTypeface()
2939     *
2940     * @attr ref android.R.styleable#TextView_fontFamily
2941     * @attr ref android.R.styleable#TextView_typeface
2942     * @attr ref android.R.styleable#TextView_textStyle
2943     */
2944    public void setTypeface(Typeface tf) {
2945        if (mTextPaint.getTypeface() != tf) {
2946            mTextPaint.setTypeface(tf);
2947
2948            if (mLayout != null) {
2949                nullLayouts();
2950                requestLayout();
2951                invalidate();
2952            }
2953        }
2954    }
2955
2956    /**
2957     * @return the current typeface and style in which the text is being
2958     * displayed.
2959     *
2960     * @see #setTypeface(Typeface)
2961     *
2962     * @attr ref android.R.styleable#TextView_fontFamily
2963     * @attr ref android.R.styleable#TextView_typeface
2964     * @attr ref android.R.styleable#TextView_textStyle
2965     */
2966    public Typeface getTypeface() {
2967        return mTextPaint.getTypeface();
2968    }
2969
2970    /**
2971     * Set the TextView's elegant height metrics flag. This setting selects font
2972     * variants that have not been compacted to fit Latin-based vertical
2973     * metrics, and also increases top and bottom bounds to provide more space.
2974     *
2975     * @param elegant set the paint's elegant metrics flag.
2976     *
2977     * @attr ref android.R.styleable#TextView_elegantTextHeight
2978     */
2979    public void setElegantTextHeight(boolean elegant) {
2980        mTextPaint.setElegantTextHeight(elegant);
2981    }
2982
2983    /**
2984     * @return the extent by which text is currently being letter-spaced.
2985     * This will normally be 0.
2986     *
2987     * @see #setLetterSpacing(float)
2988     * @see Paint#setLetterSpacing
2989     */
2990    public float getLetterSpacing() {
2991        return mTextPaint.getLetterSpacing();
2992    }
2993
2994    /**
2995     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
2996     * for slight expansion will be around 0.05.  Negative values tighten text.
2997     *
2998     * @see #getLetterSpacing()
2999     * @see Paint#getLetterSpacing
3000     *
3001     * @attr ref android.R.styleable#TextView_letterSpacing
3002     */
3003    @android.view.RemotableViewMethod
3004    public void setLetterSpacing(float letterSpacing) {
3005        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3006            mTextPaint.setLetterSpacing(letterSpacing);
3007
3008            if (mLayout != null) {
3009                nullLayouts();
3010                requestLayout();
3011                invalidate();
3012            }
3013        }
3014    }
3015
3016    /**
3017     * @return the currently set font feature settings.  Default is null.
3018     *
3019     * @see #setFontFeatureSettings(String)
3020     * @see Paint#setFontFeatureSettings
3021     */
3022    @Nullable
3023    public String getFontFeatureSettings() {
3024        return mTextPaint.getFontFeatureSettings();
3025    }
3026
3027    /**
3028     * Sets the break strategy for breaking paragraphs into lines. The default value for
3029     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3030     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3031     * text "dancing" when being edited.
3032     *
3033     * @attr ref android.R.styleable#TextView_breakStrategy
3034     * @see #getBreakStrategy()
3035     */
3036    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3037        mBreakStrategy = breakStrategy;
3038        if (mLayout != null) {
3039            nullLayouts();
3040            requestLayout();
3041            invalidate();
3042        }
3043    }
3044
3045    /**
3046     * @return the currently set break strategy.
3047     *
3048     * @attr ref android.R.styleable#TextView_breakStrategy
3049     * @see #setBreakStrategy(int)
3050     */
3051    @Layout.BreakStrategy
3052    public int getBreakStrategy() {
3053        return mBreakStrategy;
3054    }
3055
3056    /**
3057     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3058     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3059     *
3060     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3061     * @see #getHyphenationFrequency()
3062     */
3063    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3064        mHyphenationFrequency = hyphenationFrequency;
3065        if (mLayout != null) {
3066            nullLayouts();
3067            requestLayout();
3068            invalidate();
3069        }
3070    }
3071
3072    /**
3073     * @return the currently set hyphenation frequency.
3074     *
3075     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3076     * @see #setHyphenationFrequency(int)
3077     */
3078    @Layout.HyphenationFrequency
3079    public int getHyphenationFrequency() {
3080        return mHyphenationFrequency;
3081    }
3082
3083    /**
3084     * Sets font feature settings.  The format is the same as the CSS
3085     * font-feature-settings attribute:
3086     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3087     *
3088     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3089     * @see #getFontFeatureSettings()
3090     * @see Paint#getFontFeatureSettings
3091     *
3092     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3093     */
3094    @android.view.RemotableViewMethod
3095    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3096        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3097            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3098
3099            if (mLayout != null) {
3100                nullLayouts();
3101                requestLayout();
3102                invalidate();
3103            }
3104        }
3105    }
3106
3107
3108    /**
3109     * Sets the text color for all the states (normal, selected,
3110     * focused) to be this color.
3111     *
3112     * @see #setTextColor(ColorStateList)
3113     * @see #getTextColors()
3114     *
3115     * @attr ref android.R.styleable#TextView_textColor
3116     */
3117    @android.view.RemotableViewMethod
3118    public void setTextColor(@ColorInt int color) {
3119        mTextColor = ColorStateList.valueOf(color);
3120        updateTextColors();
3121    }
3122
3123    /**
3124     * Sets the text color.
3125     *
3126     * @see #setTextColor(int)
3127     * @see #getTextColors()
3128     * @see #setHintTextColor(ColorStateList)
3129     * @see #setLinkTextColor(ColorStateList)
3130     *
3131     * @attr ref android.R.styleable#TextView_textColor
3132     */
3133    public void setTextColor(ColorStateList colors) {
3134        if (colors == null) {
3135            throw new NullPointerException();
3136        }
3137
3138        mTextColor = colors;
3139        updateTextColors();
3140    }
3141
3142    /**
3143     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3144     *
3145     * @see #setTextColor(ColorStateList)
3146     * @see #setTextColor(int)
3147     *
3148     * @attr ref android.R.styleable#TextView_textColor
3149     */
3150    public final ColorStateList getTextColors() {
3151        return mTextColor;
3152    }
3153
3154    /**
3155     * <p>Return the current color selected for normal text.</p>
3156     *
3157     * @return Returns the current text color.
3158     */
3159    @ColorInt
3160    public final int getCurrentTextColor() {
3161        return mCurTextColor;
3162    }
3163
3164    /**
3165     * Sets the color used to display the selection highlight.
3166     *
3167     * @attr ref android.R.styleable#TextView_textColorHighlight
3168     */
3169    @android.view.RemotableViewMethod
3170    public void setHighlightColor(@ColorInt int color) {
3171        if (mHighlightColor != color) {
3172            mHighlightColor = color;
3173            invalidate();
3174        }
3175    }
3176
3177    /**
3178     * @return the color used to display the selection highlight
3179     *
3180     * @see #setHighlightColor(int)
3181     *
3182     * @attr ref android.R.styleable#TextView_textColorHighlight
3183     */
3184    @ColorInt
3185    public int getHighlightColor() {
3186        return mHighlightColor;
3187    }
3188
3189    /**
3190     * Sets whether the soft input method will be made visible when this
3191     * TextView gets focused. The default is true.
3192     */
3193    @android.view.RemotableViewMethod
3194    public final void setShowSoftInputOnFocus(boolean show) {
3195        createEditorIfNeeded();
3196        mEditor.mShowSoftInputOnFocus = show;
3197    }
3198
3199    /**
3200     * Returns whether the soft input method will be made visible when this
3201     * TextView gets focused. The default is true.
3202     */
3203    public final boolean getShowSoftInputOnFocus() {
3204        // When there is no Editor, return default true value
3205        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3206    }
3207
3208    /**
3209     * Gives the text a shadow of the specified blur radius and color, the specified
3210     * distance from its drawn position.
3211     * <p>
3212     * The text shadow produced does not interact with the properties on view
3213     * that are responsible for real time shadows,
3214     * {@link View#getElevation() elevation} and
3215     * {@link View#getTranslationZ() translationZ}.
3216     *
3217     * @see Paint#setShadowLayer(float, float, float, int)
3218     *
3219     * @attr ref android.R.styleable#TextView_shadowColor
3220     * @attr ref android.R.styleable#TextView_shadowDx
3221     * @attr ref android.R.styleable#TextView_shadowDy
3222     * @attr ref android.R.styleable#TextView_shadowRadius
3223     */
3224    public void setShadowLayer(float radius, float dx, float dy, int color) {
3225        mTextPaint.setShadowLayer(radius, dx, dy, color);
3226
3227        mShadowRadius = radius;
3228        mShadowDx = dx;
3229        mShadowDy = dy;
3230        mShadowColor = color;
3231
3232        // Will change text clip region
3233        if (mEditor != null) mEditor.invalidateTextDisplayList();
3234        invalidate();
3235    }
3236
3237    /**
3238     * Gets the radius of the shadow layer.
3239     *
3240     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3241     *
3242     * @see #setShadowLayer(float, float, float, int)
3243     *
3244     * @attr ref android.R.styleable#TextView_shadowRadius
3245     */
3246    public float getShadowRadius() {
3247        return mShadowRadius;
3248    }
3249
3250    /**
3251     * @return the horizontal offset of the shadow layer
3252     *
3253     * @see #setShadowLayer(float, float, float, int)
3254     *
3255     * @attr ref android.R.styleable#TextView_shadowDx
3256     */
3257    public float getShadowDx() {
3258        return mShadowDx;
3259    }
3260
3261    /**
3262     * @return the vertical offset of the shadow layer
3263     *
3264     * @see #setShadowLayer(float, float, float, int)
3265     *
3266     * @attr ref android.R.styleable#TextView_shadowDy
3267     */
3268    public float getShadowDy() {
3269        return mShadowDy;
3270    }
3271
3272    /**
3273     * @return the color of the shadow layer
3274     *
3275     * @see #setShadowLayer(float, float, float, int)
3276     *
3277     * @attr ref android.R.styleable#TextView_shadowColor
3278     */
3279    @ColorInt
3280    public int getShadowColor() {
3281        return mShadowColor;
3282    }
3283
3284    /**
3285     * @return the base paint used for the text.  Please use this only to
3286     * consult the Paint's properties and not to change them.
3287     */
3288    public TextPaint getPaint() {
3289        return mTextPaint;
3290    }
3291
3292    /**
3293     * Sets the autolink mask of the text.  See {@link
3294     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3295     * possible values.
3296     *
3297     * @attr ref android.R.styleable#TextView_autoLink
3298     */
3299    @android.view.RemotableViewMethod
3300    public final void setAutoLinkMask(int mask) {
3301        mAutoLinkMask = mask;
3302    }
3303
3304    /**
3305     * Sets whether the movement method will automatically be set to
3306     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3307     * set to nonzero and links are detected in {@link #setText}.
3308     * The default is true.
3309     *
3310     * @attr ref android.R.styleable#TextView_linksClickable
3311     */
3312    @android.view.RemotableViewMethod
3313    public final void setLinksClickable(boolean whether) {
3314        mLinksClickable = whether;
3315    }
3316
3317    /**
3318     * Returns whether the movement method will automatically be set to
3319     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3320     * set to nonzero and links are detected in {@link #setText}.
3321     * The default is true.
3322     *
3323     * @attr ref android.R.styleable#TextView_linksClickable
3324     */
3325    public final boolean getLinksClickable() {
3326        return mLinksClickable;
3327    }
3328
3329    /**
3330     * Returns the list of URLSpans attached to the text
3331     * (by {@link Linkify} or otherwise) if any.  You can call
3332     * {@link URLSpan#getURL} on them to find where they link to
3333     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3334     * to find the region of the text they are attached to.
3335     */
3336    public URLSpan[] getUrls() {
3337        if (mText instanceof Spanned) {
3338            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3339        } else {
3340            return new URLSpan[0];
3341        }
3342    }
3343
3344    /**
3345     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3346     * TextView.
3347     *
3348     * @see #setHintTextColor(ColorStateList)
3349     * @see #getHintTextColors()
3350     * @see #setTextColor(int)
3351     *
3352     * @attr ref android.R.styleable#TextView_textColorHint
3353     */
3354    @android.view.RemotableViewMethod
3355    public final void setHintTextColor(@ColorInt int color) {
3356        mHintTextColor = ColorStateList.valueOf(color);
3357        updateTextColors();
3358    }
3359
3360    /**
3361     * Sets the color of the hint text.
3362     *
3363     * @see #getHintTextColors()
3364     * @see #setHintTextColor(int)
3365     * @see #setTextColor(ColorStateList)
3366     * @see #setLinkTextColor(ColorStateList)
3367     *
3368     * @attr ref android.R.styleable#TextView_textColorHint
3369     */
3370    public final void setHintTextColor(ColorStateList colors) {
3371        mHintTextColor = colors;
3372        updateTextColors();
3373    }
3374
3375    /**
3376     * @return the color of the hint text, for the different states of this TextView.
3377     *
3378     * @see #setHintTextColor(ColorStateList)
3379     * @see #setHintTextColor(int)
3380     * @see #setTextColor(ColorStateList)
3381     * @see #setLinkTextColor(ColorStateList)
3382     *
3383     * @attr ref android.R.styleable#TextView_textColorHint
3384     */
3385    public final ColorStateList getHintTextColors() {
3386        return mHintTextColor;
3387    }
3388
3389    /**
3390     * <p>Return the current color selected to paint the hint text.</p>
3391     *
3392     * @return Returns the current hint text color.
3393     */
3394    @ColorInt
3395    public final int getCurrentHintTextColor() {
3396        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3397    }
3398
3399    /**
3400     * Sets the color of links in the text.
3401     *
3402     * @see #setLinkTextColor(ColorStateList)
3403     * @see #getLinkTextColors()
3404     *
3405     * @attr ref android.R.styleable#TextView_textColorLink
3406     */
3407    @android.view.RemotableViewMethod
3408    public final void setLinkTextColor(@ColorInt int color) {
3409        mLinkTextColor = ColorStateList.valueOf(color);
3410        updateTextColors();
3411    }
3412
3413    /**
3414     * Sets the color of links in the text.
3415     *
3416     * @see #setLinkTextColor(int)
3417     * @see #getLinkTextColors()
3418     * @see #setTextColor(ColorStateList)
3419     * @see #setHintTextColor(ColorStateList)
3420     *
3421     * @attr ref android.R.styleable#TextView_textColorLink
3422     */
3423    public final void setLinkTextColor(ColorStateList colors) {
3424        mLinkTextColor = colors;
3425        updateTextColors();
3426    }
3427
3428    /**
3429     * @return the list of colors used to paint the links in the text, for the different states of
3430     * this TextView
3431     *
3432     * @see #setLinkTextColor(ColorStateList)
3433     * @see #setLinkTextColor(int)
3434     *
3435     * @attr ref android.R.styleable#TextView_textColorLink
3436     */
3437    public final ColorStateList getLinkTextColors() {
3438        return mLinkTextColor;
3439    }
3440
3441    /**
3442     * Sets the horizontal alignment of the text and the
3443     * vertical gravity that will be used when there is extra space
3444     * in the TextView beyond what is required for the text itself.
3445     *
3446     * @see android.view.Gravity
3447     * @attr ref android.R.styleable#TextView_gravity
3448     */
3449    public void setGravity(int gravity) {
3450        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3451            gravity |= Gravity.START;
3452        }
3453        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3454            gravity |= Gravity.TOP;
3455        }
3456
3457        boolean newLayout = false;
3458
3459        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3460            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3461            newLayout = true;
3462        }
3463
3464        if (gravity != mGravity) {
3465            invalidate();
3466        }
3467
3468        mGravity = gravity;
3469
3470        if (mLayout != null && newLayout) {
3471            // XXX this is heavy-handed because no actual content changes.
3472            int want = mLayout.getWidth();
3473            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3474
3475            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3476                          mRight - mLeft - getCompoundPaddingLeft() -
3477                          getCompoundPaddingRight(), true);
3478        }
3479    }
3480
3481    /**
3482     * Returns the horizontal and vertical alignment of this TextView.
3483     *
3484     * @see android.view.Gravity
3485     * @attr ref android.R.styleable#TextView_gravity
3486     */
3487    public int getGravity() {
3488        return mGravity;
3489    }
3490
3491    /**
3492     * @return the flags on the Paint being used to display the text.
3493     * @see Paint#getFlags
3494     */
3495    public int getPaintFlags() {
3496        return mTextPaint.getFlags();
3497    }
3498
3499    /**
3500     * Sets flags on the Paint being used to display the text and
3501     * reflows the text if they are different from the old flags.
3502     * @see Paint#setFlags
3503     */
3504    @android.view.RemotableViewMethod
3505    public void setPaintFlags(int flags) {
3506        if (mTextPaint.getFlags() != flags) {
3507            mTextPaint.setFlags(flags);
3508
3509            if (mLayout != null) {
3510                nullLayouts();
3511                requestLayout();
3512                invalidate();
3513            }
3514        }
3515    }
3516
3517    /**
3518     * Sets whether the text should be allowed to be wider than the
3519     * View is.  If false, it will be wrapped to the width of the View.
3520     *
3521     * @attr ref android.R.styleable#TextView_scrollHorizontally
3522     */
3523    public void setHorizontallyScrolling(boolean whether) {
3524        if (mHorizontallyScrolling != whether) {
3525            mHorizontallyScrolling = whether;
3526
3527            if (mLayout != null) {
3528                nullLayouts();
3529                requestLayout();
3530                invalidate();
3531            }
3532        }
3533    }
3534
3535    /**
3536     * Returns whether the text is allowed to be wider than the View is.
3537     * If false, the text will be wrapped to the width of the View.
3538     *
3539     * @attr ref android.R.styleable#TextView_scrollHorizontally
3540     * @hide
3541     */
3542    public boolean getHorizontallyScrolling() {
3543        return mHorizontallyScrolling;
3544    }
3545
3546    /**
3547     * Makes the TextView at least this many lines tall.
3548     *
3549     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3550     * set this value to 1.
3551     *
3552     * @see #getMinLines()
3553     *
3554     * @attr ref android.R.styleable#TextView_minLines
3555     */
3556    @android.view.RemotableViewMethod
3557    public void setMinLines(int minlines) {
3558        mMinimum = minlines;
3559        mMinMode = LINES;
3560
3561        requestLayout();
3562        invalidate();
3563    }
3564
3565    /**
3566     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3567     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3568     *
3569     * @see #setMinLines(int)
3570     *
3571     * @attr ref android.R.styleable#TextView_minLines
3572     */
3573    public int getMinLines() {
3574        return mMinMode == LINES ? mMinimum : -1;
3575    }
3576
3577    /**
3578     * Makes the TextView at least this many pixels tall.
3579     *
3580     * Setting this value overrides any other (minimum) number of lines setting.
3581     *
3582     * @attr ref android.R.styleable#TextView_minHeight
3583     */
3584    @android.view.RemotableViewMethod
3585    public void setMinHeight(int minHeight) {
3586        mMinimum = minHeight;
3587        mMinMode = PIXELS;
3588
3589        requestLayout();
3590        invalidate();
3591    }
3592
3593    /**
3594     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3595     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3596     *
3597     * @see #setMinHeight(int)
3598     *
3599     * @attr ref android.R.styleable#TextView_minHeight
3600     */
3601    public int getMinHeight() {
3602        return mMinMode == PIXELS ? mMinimum : -1;
3603    }
3604
3605    /**
3606     * Makes the TextView at most this many lines tall.
3607     *
3608     * Setting this value overrides any other (maximum) height setting.
3609     *
3610     * @attr ref android.R.styleable#TextView_maxLines
3611     */
3612    @android.view.RemotableViewMethod
3613    public void setMaxLines(int maxlines) {
3614        mMaximum = maxlines;
3615        mMaxMode = LINES;
3616
3617        requestLayout();
3618        invalidate();
3619    }
3620
3621    /**
3622     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3623     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3624     *
3625     * @see #setMaxLines(int)
3626     *
3627     * @attr ref android.R.styleable#TextView_maxLines
3628     */
3629    public int getMaxLines() {
3630        return mMaxMode == LINES ? mMaximum : -1;
3631    }
3632
3633    /**
3634     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3635     * {@link #setMaxLines(int)} method.
3636     *
3637     * Setting this value overrides any other (maximum) number of lines setting.
3638     *
3639     * @attr ref android.R.styleable#TextView_maxHeight
3640     */
3641    @android.view.RemotableViewMethod
3642    public void setMaxHeight(int maxHeight) {
3643        mMaximum = maxHeight;
3644        mMaxMode = PIXELS;
3645
3646        requestLayout();
3647        invalidate();
3648    }
3649
3650    /**
3651     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3652     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3653     *
3654     * @see #setMaxHeight(int)
3655     *
3656     * @attr ref android.R.styleable#TextView_maxHeight
3657     */
3658    public int getMaxHeight() {
3659        return mMaxMode == PIXELS ? mMaximum : -1;
3660    }
3661
3662    /**
3663     * Makes the TextView exactly this many lines tall.
3664     *
3665     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3666     * height setting. A single line TextView will set this value to 1.
3667     *
3668     * @attr ref android.R.styleable#TextView_lines
3669     */
3670    @android.view.RemotableViewMethod
3671    public void setLines(int lines) {
3672        mMaximum = mMinimum = lines;
3673        mMaxMode = mMinMode = LINES;
3674
3675        requestLayout();
3676        invalidate();
3677    }
3678
3679    /**
3680     * Makes the TextView exactly this many pixels tall.
3681     * You could do the same thing by specifying this number in the
3682     * LayoutParams.
3683     *
3684     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3685     * height setting.
3686     *
3687     * @attr ref android.R.styleable#TextView_height
3688     */
3689    @android.view.RemotableViewMethod
3690    public void setHeight(int pixels) {
3691        mMaximum = mMinimum = pixels;
3692        mMaxMode = mMinMode = PIXELS;
3693
3694        requestLayout();
3695        invalidate();
3696    }
3697
3698    /**
3699     * Makes the TextView at least this many ems wide
3700     *
3701     * @attr ref android.R.styleable#TextView_minEms
3702     */
3703    @android.view.RemotableViewMethod
3704    public void setMinEms(int minems) {
3705        mMinWidth = minems;
3706        mMinWidthMode = EMS;
3707
3708        requestLayout();
3709        invalidate();
3710    }
3711
3712    /**
3713     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3714     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3715     *
3716     * @see #setMinEms(int)
3717     * @see #setEms(int)
3718     *
3719     * @attr ref android.R.styleable#TextView_minEms
3720     */
3721    public int getMinEms() {
3722        return mMinWidthMode == EMS ? mMinWidth : -1;
3723    }
3724
3725    /**
3726     * Makes the TextView at least this many pixels wide
3727     *
3728     * @attr ref android.R.styleable#TextView_minWidth
3729     */
3730    @android.view.RemotableViewMethod
3731    public void setMinWidth(int minpixels) {
3732        mMinWidth = minpixels;
3733        mMinWidthMode = PIXELS;
3734
3735        requestLayout();
3736        invalidate();
3737    }
3738
3739    /**
3740     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3741     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3742     *
3743     * @see #setMinWidth(int)
3744     * @see #setWidth(int)
3745     *
3746     * @attr ref android.R.styleable#TextView_minWidth
3747     */
3748    public int getMinWidth() {
3749        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3750    }
3751
3752    /**
3753     * Makes the TextView at most this many ems wide
3754     *
3755     * @attr ref android.R.styleable#TextView_maxEms
3756     */
3757    @android.view.RemotableViewMethod
3758    public void setMaxEms(int maxems) {
3759        mMaxWidth = maxems;
3760        mMaxWidthMode = EMS;
3761
3762        requestLayout();
3763        invalidate();
3764    }
3765
3766    /**
3767     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3768     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3769     *
3770     * @see #setMaxEms(int)
3771     * @see #setEms(int)
3772     *
3773     * @attr ref android.R.styleable#TextView_maxEms
3774     */
3775    public int getMaxEms() {
3776        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3777    }
3778
3779    /**
3780     * Makes the TextView at most this many pixels wide
3781     *
3782     * @attr ref android.R.styleable#TextView_maxWidth
3783     */
3784    @android.view.RemotableViewMethod
3785    public void setMaxWidth(int maxpixels) {
3786        mMaxWidth = maxpixels;
3787        mMaxWidthMode = PIXELS;
3788
3789        requestLayout();
3790        invalidate();
3791    }
3792
3793    /**
3794     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3795     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3796     *
3797     * @see #setMaxWidth(int)
3798     * @see #setWidth(int)
3799     *
3800     * @attr ref android.R.styleable#TextView_maxWidth
3801     */
3802    public int getMaxWidth() {
3803        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3804    }
3805
3806    /**
3807     * Makes the TextView exactly this many ems wide
3808     *
3809     * @see #setMaxEms(int)
3810     * @see #setMinEms(int)
3811     * @see #getMinEms()
3812     * @see #getMaxEms()
3813     *
3814     * @attr ref android.R.styleable#TextView_ems
3815     */
3816    @android.view.RemotableViewMethod
3817    public void setEms(int ems) {
3818        mMaxWidth = mMinWidth = ems;
3819        mMaxWidthMode = mMinWidthMode = EMS;
3820
3821        requestLayout();
3822        invalidate();
3823    }
3824
3825    /**
3826     * Makes the TextView exactly this many pixels wide.
3827     * You could do the same thing by specifying this number in the
3828     * LayoutParams.
3829     *
3830     * @see #setMaxWidth(int)
3831     * @see #setMinWidth(int)
3832     * @see #getMinWidth()
3833     * @see #getMaxWidth()
3834     *
3835     * @attr ref android.R.styleable#TextView_width
3836     */
3837    @android.view.RemotableViewMethod
3838    public void setWidth(int pixels) {
3839        mMaxWidth = mMinWidth = pixels;
3840        mMaxWidthMode = mMinWidthMode = PIXELS;
3841
3842        requestLayout();
3843        invalidate();
3844    }
3845
3846    /**
3847     * Sets line spacing for this TextView.  Each line will have its height
3848     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3849     *
3850     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3851     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3852     */
3853    public void setLineSpacing(float add, float mult) {
3854        if (mSpacingAdd != add || mSpacingMult != mult) {
3855            mSpacingAdd = add;
3856            mSpacingMult = mult;
3857
3858            if (mLayout != null) {
3859                nullLayouts();
3860                requestLayout();
3861                invalidate();
3862            }
3863        }
3864    }
3865
3866    /**
3867     * Gets the line spacing multiplier
3868     *
3869     * @return the value by which each line's height is multiplied to get its actual height.
3870     *
3871     * @see #setLineSpacing(float, float)
3872     * @see #getLineSpacingExtra()
3873     *
3874     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3875     */
3876    public float getLineSpacingMultiplier() {
3877        return mSpacingMult;
3878    }
3879
3880    /**
3881     * Gets the line spacing extra space
3882     *
3883     * @return the extra space that is added to the height of each lines of this TextView.
3884     *
3885     * @see #setLineSpacing(float, float)
3886     * @see #getLineSpacingMultiplier()
3887     *
3888     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3889     */
3890    public float getLineSpacingExtra() {
3891        return mSpacingAdd;
3892    }
3893
3894    /**
3895     * Convenience method: Append the specified text to the TextView's
3896     * display buffer, upgrading it to BufferType.EDITABLE if it was
3897     * not already editable.
3898     */
3899    public final void append(CharSequence text) {
3900        append(text, 0, text.length());
3901    }
3902
3903    /**
3904     * Convenience method: Append the specified text slice to the TextView's
3905     * display buffer, upgrading it to BufferType.EDITABLE if it was
3906     * not already editable.
3907     */
3908    public void append(CharSequence text, int start, int end) {
3909        if (!(mText instanceof Editable)) {
3910            setText(mText, BufferType.EDITABLE);
3911        }
3912
3913        ((Editable) mText).append(text, start, end);
3914    }
3915
3916    private void updateTextColors() {
3917        boolean inval = false;
3918        int color = mTextColor.getColorForState(getDrawableState(), 0);
3919        if (color != mCurTextColor) {
3920            mCurTextColor = color;
3921            inval = true;
3922        }
3923        if (mLinkTextColor != null) {
3924            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3925            if (color != mTextPaint.linkColor) {
3926                mTextPaint.linkColor = color;
3927                inval = true;
3928            }
3929        }
3930        if (mHintTextColor != null) {
3931            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3932            if (color != mCurHintTextColor) {
3933                mCurHintTextColor = color;
3934                if (mText.length() == 0) {
3935                    inval = true;
3936                }
3937            }
3938        }
3939        if (inval) {
3940            // Text needs to be redrawn with the new color
3941            if (mEditor != null) mEditor.invalidateTextDisplayList();
3942            invalidate();
3943        }
3944    }
3945
3946    @Override
3947    protected void drawableStateChanged() {
3948        super.drawableStateChanged();
3949        if (mTextColor != null && mTextColor.isStateful()
3950                || (mHintTextColor != null && mHintTextColor.isStateful())
3951                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3952            updateTextColors();
3953        }
3954
3955        if (mDrawables != null) {
3956            final int[] state = getDrawableState();
3957            for (Drawable dr : mDrawables.mShowing) {
3958                if (dr != null && dr.isStateful()) {
3959                    dr.setState(state);
3960                }
3961            }
3962        }
3963    }
3964
3965    @Override
3966    public void drawableHotspotChanged(float x, float y) {
3967        super.drawableHotspotChanged(x, y);
3968
3969        if (mDrawables != null) {
3970            final int[] state = getDrawableState();
3971            for (Drawable dr : mDrawables.mShowing) {
3972                if (dr != null && dr.isStateful()) {
3973                    dr.setHotspot(x, y);
3974                }
3975            }
3976        }
3977    }
3978
3979    @Override
3980    public Parcelable onSaveInstanceState() {
3981        Parcelable superState = super.onSaveInstanceState();
3982
3983        // Save state if we are forced to
3984        boolean save = mFreezesText;
3985        int start = 0;
3986        int end = 0;
3987
3988        if (mText != null) {
3989            start = getSelectionStart();
3990            end = getSelectionEnd();
3991            if (start >= 0 || end >= 0) {
3992                // Or save state if there is a selection
3993                save = true;
3994            }
3995        }
3996
3997        if (save) {
3998            SavedState ss = new SavedState(superState);
3999            // XXX Should also save the current scroll position!
4000            ss.selStart = start;
4001            ss.selEnd = end;
4002
4003            if (mText instanceof Spanned) {
4004                Spannable sp = new SpannableStringBuilder(mText);
4005
4006                if (mEditor != null) {
4007                    removeMisspelledSpans(sp);
4008                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
4009                }
4010
4011                ss.text = sp;
4012            } else {
4013                ss.text = mText.toString();
4014            }
4015
4016            if (isFocused() && start >= 0 && end >= 0) {
4017                ss.frozenWithFocus = true;
4018            }
4019
4020            ss.error = getError();
4021
4022            if (mEditor != null) {
4023                ss.editorState = mEditor.saveInstanceState();
4024            }
4025            return ss;
4026        }
4027
4028        return superState;
4029    }
4030
4031    void removeMisspelledSpans(Spannable spannable) {
4032        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4033                SuggestionSpan.class);
4034        for (int i = 0; i < suggestionSpans.length; i++) {
4035            int flags = suggestionSpans[i].getFlags();
4036            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4037                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4038                spannable.removeSpan(suggestionSpans[i]);
4039            }
4040        }
4041    }
4042
4043    @Override
4044    public void onRestoreInstanceState(Parcelable state) {
4045        if (!(state instanceof SavedState)) {
4046            super.onRestoreInstanceState(state);
4047            return;
4048        }
4049
4050        SavedState ss = (SavedState)state;
4051        super.onRestoreInstanceState(ss.getSuperState());
4052
4053        // XXX restore buffer type too, as well as lots of other stuff
4054        if (ss.text != null) {
4055            setText(ss.text);
4056        }
4057
4058        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4059            if (mText instanceof Spannable) {
4060                int len = mText.length();
4061
4062                if (ss.selStart > len || ss.selEnd > len) {
4063                    String restored = "";
4064
4065                    if (ss.text != null) {
4066                        restored = "(restored) ";
4067                    }
4068
4069                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4070                          "/" + ss.selEnd + " out of range for " + restored +
4071                          "text " + mText);
4072                } else {
4073                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4074
4075                    if (ss.frozenWithFocus) {
4076                        createEditorIfNeeded();
4077                        mEditor.mFrozenWithFocus = true;
4078                    }
4079                }
4080            }
4081        }
4082
4083        if (ss.error != null) {
4084            final CharSequence error = ss.error;
4085            // Display the error later, after the first layout pass
4086            post(new Runnable() {
4087                public void run() {
4088                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4089                        setError(error);
4090                    }
4091                }
4092            });
4093        }
4094
4095        if (ss.editorState != null) {
4096            createEditorIfNeeded();
4097            mEditor.restoreInstanceState(ss.editorState);
4098        }
4099    }
4100
4101    /**
4102     * Control whether this text view saves its entire text contents when
4103     * freezing to an icicle, in addition to dynamic state such as cursor
4104     * position.  By default this is false, not saving the text.  Set to true
4105     * if the text in the text view is not being saved somewhere else in
4106     * persistent storage (such as in a content provider) so that if the
4107     * view is later thawed the user will not lose their data.
4108     *
4109     * @param freezesText Controls whether a frozen icicle should include the
4110     * entire text data: true to include it, false to not.
4111     *
4112     * @attr ref android.R.styleable#TextView_freezesText
4113     */
4114    @android.view.RemotableViewMethod
4115    public void setFreezesText(boolean freezesText) {
4116        mFreezesText = freezesText;
4117    }
4118
4119    /**
4120     * Return whether this text view is including its entire text contents
4121     * in frozen icicles.
4122     *
4123     * @return Returns true if text is included, false if it isn't.
4124     *
4125     * @see #setFreezesText
4126     */
4127    public boolean getFreezesText() {
4128        return mFreezesText;
4129    }
4130
4131    ///////////////////////////////////////////////////////////////////////////
4132
4133    /**
4134     * Sets the Factory used to create new Editables.
4135     */
4136    public final void setEditableFactory(Editable.Factory factory) {
4137        mEditableFactory = factory;
4138        setText(mText);
4139    }
4140
4141    /**
4142     * Sets the Factory used to create new Spannables.
4143     */
4144    public final void setSpannableFactory(Spannable.Factory factory) {
4145        mSpannableFactory = factory;
4146        setText(mText);
4147    }
4148
4149    /**
4150     * Sets the string value of the TextView. TextView <em>does not</em> accept
4151     * HTML-like formatting, which you can do with text strings in XML resource files.
4152     * To style your strings, attach android.text.style.* objects to a
4153     * {@link android.text.SpannableString SpannableString}, or see the
4154     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4155     * Available Resource Types</a> documentation for an example of setting
4156     * formatted text in the XML resource file.
4157     *
4158     * @attr ref android.R.styleable#TextView_text
4159     */
4160    @android.view.RemotableViewMethod
4161    public final void setText(CharSequence text) {
4162        setText(text, mBufferType);
4163    }
4164
4165    /**
4166     * Like {@link #setText(CharSequence)},
4167     * except that the cursor position (if any) is retained in the new text.
4168     *
4169     * @param text The new text to place in the text view.
4170     *
4171     * @see #setText(CharSequence)
4172     */
4173    @android.view.RemotableViewMethod
4174    public final void setTextKeepState(CharSequence text) {
4175        setTextKeepState(text, mBufferType);
4176    }
4177
4178    /**
4179     * Sets the text that this TextView is to display (see
4180     * {@link #setText(CharSequence)}) and also sets whether it is stored
4181     * in a styleable/spannable buffer and whether it is editable.
4182     *
4183     * @attr ref android.R.styleable#TextView_text
4184     * @attr ref android.R.styleable#TextView_bufferType
4185     */
4186    public void setText(CharSequence text, BufferType type) {
4187        setText(text, type, true, 0);
4188
4189        if (mCharWrapper != null) {
4190            mCharWrapper.mChars = null;
4191        }
4192    }
4193
4194    private void setText(CharSequence text, BufferType type,
4195                         boolean notifyBefore, int oldlen) {
4196        if (text == null) {
4197            text = "";
4198        }
4199
4200        // If suggestions are not enabled, remove the suggestion spans from the text
4201        if (!isSuggestionsEnabled()) {
4202            text = removeSuggestionSpans(text);
4203        }
4204
4205        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4206
4207        if (text instanceof Spanned &&
4208            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4209            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4210                setHorizontalFadingEdgeEnabled(true);
4211                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4212            } else {
4213                setHorizontalFadingEdgeEnabled(false);
4214                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4215            }
4216            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4217        }
4218
4219        int n = mFilters.length;
4220        for (int i = 0; i < n; i++) {
4221            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4222            if (out != null) {
4223                text = out;
4224            }
4225        }
4226
4227        if (notifyBefore) {
4228            if (mText != null) {
4229                oldlen = mText.length();
4230                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4231            } else {
4232                sendBeforeTextChanged("", 0, 0, text.length());
4233            }
4234        }
4235
4236        boolean needEditableForNotification = false;
4237
4238        if (mListeners != null && mListeners.size() != 0) {
4239            needEditableForNotification = true;
4240        }
4241
4242        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4243                needEditableForNotification) {
4244            createEditorIfNeeded();
4245            mEditor.forgetUndoRedo();
4246            Editable t = mEditableFactory.newEditable(text);
4247            text = t;
4248            setFilters(t, mFilters);
4249            InputMethodManager imm = InputMethodManager.peekInstance();
4250            if (imm != null) imm.restartInput(this);
4251        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4252            text = mSpannableFactory.newSpannable(text);
4253        } else if (!(text instanceof CharWrapper)) {
4254            text = TextUtils.stringOrSpannedString(text);
4255        }
4256
4257        if (mAutoLinkMask != 0) {
4258            Spannable s2;
4259
4260            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4261                s2 = (Spannable) text;
4262            } else {
4263                s2 = mSpannableFactory.newSpannable(text);
4264            }
4265
4266            if (Linkify.addLinks(s2, mAutoLinkMask)) {
4267                text = s2;
4268                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4269
4270                /*
4271                 * We must go ahead and set the text before changing the
4272                 * movement method, because setMovementMethod() may call
4273                 * setText() again to try to upgrade the buffer type.
4274                 */
4275                mText = text;
4276
4277                // Do not change the movement method for text that support text selection as it
4278                // would prevent an arbitrary cursor displacement.
4279                if (mLinksClickable && !textCanBeSelected()) {
4280                    setMovementMethod(LinkMovementMethod.getInstance());
4281                }
4282            }
4283        }
4284
4285        mBufferType = type;
4286        mText = text;
4287
4288        if (mTransformation == null) {
4289            mTransformed = text;
4290        } else {
4291            mTransformed = mTransformation.getTransformation(text, this);
4292        }
4293
4294        final int textLength = text.length();
4295
4296        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4297            Spannable sp = (Spannable) text;
4298
4299            // Remove any ChangeWatchers that might have come from other TextViews.
4300            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4301            final int count = watchers.length;
4302            for (int i = 0; i < count; i++) {
4303                sp.removeSpan(watchers[i]);
4304            }
4305
4306            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4307
4308            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4309                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4310
4311            if (mEditor != null) mEditor.addSpanWatchers(sp);
4312
4313            if (mTransformation != null) {
4314                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4315            }
4316
4317            if (mMovement != null) {
4318                mMovement.initialize(this, (Spannable) text);
4319
4320                /*
4321                 * Initializing the movement method will have set the
4322                 * selection, so reset mSelectionMoved to keep that from
4323                 * interfering with the normal on-focus selection-setting.
4324                 */
4325                if (mEditor != null) mEditor.mSelectionMoved = false;
4326            }
4327        }
4328
4329        if (mLayout != null) {
4330            checkForRelayout();
4331        }
4332
4333        sendOnTextChanged(text, 0, oldlen, textLength);
4334        onTextChanged(text, 0, oldlen, textLength);
4335
4336        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4337
4338        if (needEditableForNotification) {
4339            sendAfterTextChanged((Editable) text);
4340        }
4341
4342        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4343        if (mEditor != null) mEditor.prepareCursorControllers();
4344    }
4345
4346    /**
4347     * Sets the TextView to display the specified slice of the specified
4348     * char array.  You must promise that you will not change the contents
4349     * of the array except for right before another call to setText(),
4350     * since the TextView has no way to know that the text
4351     * has changed and that it needs to invalidate and re-layout.
4352     */
4353    public final void setText(char[] text, int start, int len) {
4354        int oldlen = 0;
4355
4356        if (start < 0 || len < 0 || start + len > text.length) {
4357            throw new IndexOutOfBoundsException(start + ", " + len);
4358        }
4359
4360        /*
4361         * We must do the before-notification here ourselves because if
4362         * the old text is a CharWrapper we destroy it before calling
4363         * into the normal path.
4364         */
4365        if (mText != null) {
4366            oldlen = mText.length();
4367            sendBeforeTextChanged(mText, 0, oldlen, len);
4368        } else {
4369            sendBeforeTextChanged("", 0, 0, len);
4370        }
4371
4372        if (mCharWrapper == null) {
4373            mCharWrapper = new CharWrapper(text, start, len);
4374        } else {
4375            mCharWrapper.set(text, start, len);
4376        }
4377
4378        setText(mCharWrapper, mBufferType, false, oldlen);
4379    }
4380
4381    /**
4382     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4383     * except that the cursor position (if any) is retained in the new text.
4384     *
4385     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4386     */
4387    public final void setTextKeepState(CharSequence text, BufferType type) {
4388        int start = getSelectionStart();
4389        int end = getSelectionEnd();
4390        int len = text.length();
4391
4392        setText(text, type);
4393
4394        if (start >= 0 || end >= 0) {
4395            if (mText instanceof Spannable) {
4396                Selection.setSelection((Spannable) mText,
4397                                       Math.max(0, Math.min(start, len)),
4398                                       Math.max(0, Math.min(end, len)));
4399            }
4400        }
4401    }
4402
4403    @android.view.RemotableViewMethod
4404    public final void setText(@StringRes int resid) {
4405        setText(getContext().getResources().getText(resid));
4406    }
4407
4408    public final void setText(@StringRes int resid, BufferType type) {
4409        setText(getContext().getResources().getText(resid), type);
4410    }
4411
4412    /**
4413     * Sets the text to be displayed when the text of the TextView is empty.
4414     * Null means to use the normal empty text. The hint does not currently
4415     * participate in determining the size of the view.
4416     *
4417     * @attr ref android.R.styleable#TextView_hint
4418     */
4419    @android.view.RemotableViewMethod
4420    public final void setHint(CharSequence hint) {
4421        mHint = TextUtils.stringOrSpannedString(hint);
4422
4423        if (mLayout != null) {
4424            checkForRelayout();
4425        }
4426
4427        if (mText.length() == 0) {
4428            invalidate();
4429        }
4430
4431        // Invalidate display list if hint is currently used
4432        if (mEditor != null && mText.length() == 0 && mHint != null) {
4433            mEditor.invalidateTextDisplayList();
4434        }
4435    }
4436
4437    /**
4438     * Sets the text to be displayed when the text of the TextView is empty,
4439     * from a resource.
4440     *
4441     * @attr ref android.R.styleable#TextView_hint
4442     */
4443    @android.view.RemotableViewMethod
4444    public final void setHint(@StringRes int resid) {
4445        setHint(getContext().getResources().getText(resid));
4446    }
4447
4448    /**
4449     * Returns the hint that is displayed when the text of the TextView
4450     * is empty.
4451     *
4452     * @attr ref android.R.styleable#TextView_hint
4453     */
4454    @ViewDebug.CapturedViewProperty
4455    public CharSequence getHint() {
4456        return mHint;
4457    }
4458
4459    boolean isSingleLine() {
4460        return mSingleLine;
4461    }
4462
4463    private static boolean isMultilineInputType(int type) {
4464        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4465            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4466    }
4467
4468    /**
4469     * Removes the suggestion spans.
4470     */
4471    CharSequence removeSuggestionSpans(CharSequence text) {
4472       if (text instanceof Spanned) {
4473           Spannable spannable;
4474           if (text instanceof Spannable) {
4475               spannable = (Spannable) text;
4476           } else {
4477               spannable = new SpannableString(text);
4478               text = spannable;
4479           }
4480
4481           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4482           for (int i = 0; i < spans.length; i++) {
4483               spannable.removeSpan(spans[i]);
4484           }
4485       }
4486       return text;
4487    }
4488
4489    /**
4490     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4491     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4492     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4493     * then a soft keyboard will not be displayed for this text view.
4494     *
4495     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4496     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4497     * type.
4498     *
4499     * @see #getInputType()
4500     * @see #setRawInputType(int)
4501     * @see android.text.InputType
4502     * @attr ref android.R.styleable#TextView_inputType
4503     */
4504    public void setInputType(int type) {
4505        final boolean wasPassword = isPasswordInputType(getInputType());
4506        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4507        setInputType(type, false);
4508        final boolean isPassword = isPasswordInputType(type);
4509        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4510        boolean forceUpdate = false;
4511        if (isPassword) {
4512            setTransformationMethod(PasswordTransformationMethod.getInstance());
4513            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4514        } else if (isVisiblePassword) {
4515            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4516                forceUpdate = true;
4517            }
4518            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4519        } else if (wasPassword || wasVisiblePassword) {
4520            // not in password mode, clean up typeface and transformation
4521            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4522            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4523                forceUpdate = true;
4524            }
4525        }
4526
4527        boolean singleLine = !isMultilineInputType(type);
4528
4529        // We need to update the single line mode if it has changed or we
4530        // were previously in password mode.
4531        if (mSingleLine != singleLine || forceUpdate) {
4532            // Change single line mode, but only change the transformation if
4533            // we are not in password mode.
4534            applySingleLine(singleLine, !isPassword, true);
4535        }
4536
4537        if (!isSuggestionsEnabled()) {
4538            mText = removeSuggestionSpans(mText);
4539        }
4540
4541        InputMethodManager imm = InputMethodManager.peekInstance();
4542        if (imm != null) imm.restartInput(this);
4543    }
4544
4545    /**
4546     * It would be better to rely on the input type for everything. A password inputType should have
4547     * a password transformation. We should hence use isPasswordInputType instead of this method.
4548     *
4549     * We should:
4550     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4551     * would install the correct transformation).
4552     * - Refuse the installation of a non-password transformation in setTransformation if the input
4553     * type is password.
4554     *
4555     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4556     * is useful since it matches what the user can see (obfuscated text or not).
4557     *
4558     * @return true if the current transformation method is of the password type.
4559     */
4560    boolean hasPasswordTransformationMethod() {
4561        return mTransformation instanceof PasswordTransformationMethod;
4562    }
4563
4564    private static boolean isPasswordInputType(int inputType) {
4565        final int variation =
4566                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4567        return variation
4568                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4569                || variation
4570                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4571                || variation
4572                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4573    }
4574
4575    private static boolean isVisiblePasswordInputType(int inputType) {
4576        final int variation =
4577                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4578        return variation
4579                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4580    }
4581
4582    /**
4583     * Directly change the content type integer of the text view, without
4584     * modifying any other state.
4585     * @see #setInputType(int)
4586     * @see android.text.InputType
4587     * @attr ref android.R.styleable#TextView_inputType
4588     */
4589    public void setRawInputType(int type) {
4590        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4591        createEditorIfNeeded();
4592        mEditor.mInputType = type;
4593    }
4594
4595    private void setInputType(int type, boolean direct) {
4596        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4597        KeyListener input;
4598        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4599            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4600            TextKeyListener.Capitalize cap;
4601            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4602                cap = TextKeyListener.Capitalize.CHARACTERS;
4603            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4604                cap = TextKeyListener.Capitalize.WORDS;
4605            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4606                cap = TextKeyListener.Capitalize.SENTENCES;
4607            } else {
4608                cap = TextKeyListener.Capitalize.NONE;
4609            }
4610            input = TextKeyListener.getInstance(autotext, cap);
4611        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4612            input = DigitsKeyListener.getInstance(
4613                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4614                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4615        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4616            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4617                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4618                    input = DateKeyListener.getInstance();
4619                    break;
4620                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4621                    input = TimeKeyListener.getInstance();
4622                    break;
4623                default:
4624                    input = DateTimeKeyListener.getInstance();
4625                    break;
4626            }
4627        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4628            input = DialerKeyListener.getInstance();
4629        } else {
4630            input = TextKeyListener.getInstance();
4631        }
4632        setRawInputType(type);
4633        if (direct) {
4634            createEditorIfNeeded();
4635            mEditor.mKeyListener = input;
4636        } else {
4637            setKeyListenerOnly(input);
4638        }
4639    }
4640
4641    /**
4642     * Get the type of the editable content.
4643     *
4644     * @see #setInputType(int)
4645     * @see android.text.InputType
4646     */
4647    public int getInputType() {
4648        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4649    }
4650
4651    /**
4652     * Change the editor type integer associated with the text view, which
4653     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4654     * has focus.
4655     * @see #getImeOptions
4656     * @see android.view.inputmethod.EditorInfo
4657     * @attr ref android.R.styleable#TextView_imeOptions
4658     */
4659    public void setImeOptions(int imeOptions) {
4660        createEditorIfNeeded();
4661        mEditor.createInputContentTypeIfNeeded();
4662        mEditor.mInputContentType.imeOptions = imeOptions;
4663    }
4664
4665    /**
4666     * Get the type of the IME editor.
4667     *
4668     * @see #setImeOptions(int)
4669     * @see android.view.inputmethod.EditorInfo
4670     */
4671    public int getImeOptions() {
4672        return mEditor != null && mEditor.mInputContentType != null
4673                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4674    }
4675
4676    /**
4677     * Change the custom IME action associated with the text view, which
4678     * will be reported to an IME with {@link EditorInfo#actionLabel}
4679     * and {@link EditorInfo#actionId} when it has focus.
4680     * @see #getImeActionLabel
4681     * @see #getImeActionId
4682     * @see android.view.inputmethod.EditorInfo
4683     * @attr ref android.R.styleable#TextView_imeActionLabel
4684     * @attr ref android.R.styleable#TextView_imeActionId
4685     */
4686    public void setImeActionLabel(CharSequence label, int actionId) {
4687        createEditorIfNeeded();
4688        mEditor.createInputContentTypeIfNeeded();
4689        mEditor.mInputContentType.imeActionLabel = label;
4690        mEditor.mInputContentType.imeActionId = actionId;
4691    }
4692
4693    /**
4694     * Get the IME action label previous set with {@link #setImeActionLabel}.
4695     *
4696     * @see #setImeActionLabel
4697     * @see android.view.inputmethod.EditorInfo
4698     */
4699    public CharSequence getImeActionLabel() {
4700        return mEditor != null && mEditor.mInputContentType != null
4701                ? mEditor.mInputContentType.imeActionLabel : null;
4702    }
4703
4704    /**
4705     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4706     *
4707     * @see #setImeActionLabel
4708     * @see android.view.inputmethod.EditorInfo
4709     */
4710    public int getImeActionId() {
4711        return mEditor != null && mEditor.mInputContentType != null
4712                ? mEditor.mInputContentType.imeActionId : 0;
4713    }
4714
4715    /**
4716     * Set a special listener to be called when an action is performed
4717     * on the text view.  This will be called when the enter key is pressed,
4718     * or when an action supplied to the IME is selected by the user.  Setting
4719     * this means that the normal hard key event will not insert a newline
4720     * into the text view, even if it is multi-line; holding down the ALT
4721     * modifier will, however, allow the user to insert a newline character.
4722     */
4723    public void setOnEditorActionListener(OnEditorActionListener l) {
4724        createEditorIfNeeded();
4725        mEditor.createInputContentTypeIfNeeded();
4726        mEditor.mInputContentType.onEditorActionListener = l;
4727    }
4728
4729    /**
4730     * Called when an attached input method calls
4731     * {@link InputConnection#performEditorAction(int)
4732     * InputConnection.performEditorAction()}
4733     * for this text view.  The default implementation will call your action
4734     * listener supplied to {@link #setOnEditorActionListener}, or perform
4735     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4736     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4737     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4738     * EditorInfo.IME_ACTION_DONE}.
4739     *
4740     * <p>For backwards compatibility, if no IME options have been set and the
4741     * text view would not normally advance focus on enter, then
4742     * the NEXT and DONE actions received here will be turned into an enter
4743     * key down/up pair to go through the normal key handling.
4744     *
4745     * @param actionCode The code of the action being performed.
4746     *
4747     * @see #setOnEditorActionListener
4748     */
4749    public void onEditorAction(int actionCode) {
4750        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4751        if (ict != null) {
4752            if (ict.onEditorActionListener != null) {
4753                if (ict.onEditorActionListener.onEditorAction(this,
4754                        actionCode, null)) {
4755                    return;
4756                }
4757            }
4758
4759            // This is the handling for some default action.
4760            // Note that for backwards compatibility we don't do this
4761            // default handling if explicit ime options have not been given,
4762            // instead turning this into the normal enter key codes that an
4763            // app may be expecting.
4764            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4765                View v = focusSearch(FOCUS_FORWARD);
4766                if (v != null) {
4767                    if (!v.requestFocus(FOCUS_FORWARD)) {
4768                        throw new IllegalStateException("focus search returned a view " +
4769                                "that wasn't able to take focus!");
4770                    }
4771                }
4772                return;
4773
4774            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4775                View v = focusSearch(FOCUS_BACKWARD);
4776                if (v != null) {
4777                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4778                        throw new IllegalStateException("focus search returned a view " +
4779                                "that wasn't able to take focus!");
4780                    }
4781                }
4782                return;
4783
4784            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4785                InputMethodManager imm = InputMethodManager.peekInstance();
4786                if (imm != null && imm.isActive(this)) {
4787                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4788                }
4789                return;
4790            }
4791        }
4792
4793        ViewRootImpl viewRootImpl = getViewRootImpl();
4794        if (viewRootImpl != null) {
4795            long eventTime = SystemClock.uptimeMillis();
4796            viewRootImpl.dispatchKeyFromIme(
4797                    new KeyEvent(eventTime, eventTime,
4798                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4799                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4800                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4801                    | KeyEvent.FLAG_EDITOR_ACTION));
4802            viewRootImpl.dispatchKeyFromIme(
4803                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4804                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4805                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4806                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4807                    | KeyEvent.FLAG_EDITOR_ACTION));
4808        }
4809    }
4810
4811    /**
4812     * Set the private content type of the text, which is the
4813     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4814     * field that will be filled in when creating an input connection.
4815     *
4816     * @see #getPrivateImeOptions()
4817     * @see EditorInfo#privateImeOptions
4818     * @attr ref android.R.styleable#TextView_privateImeOptions
4819     */
4820    public void setPrivateImeOptions(String type) {
4821        createEditorIfNeeded();
4822        mEditor.createInputContentTypeIfNeeded();
4823        mEditor.mInputContentType.privateImeOptions = type;
4824    }
4825
4826    /**
4827     * Get the private type of the content.
4828     *
4829     * @see #setPrivateImeOptions(String)
4830     * @see EditorInfo#privateImeOptions
4831     */
4832    public String getPrivateImeOptions() {
4833        return mEditor != null && mEditor.mInputContentType != null
4834                ? mEditor.mInputContentType.privateImeOptions : null;
4835    }
4836
4837    /**
4838     * Set the extra input data of the text, which is the
4839     * {@link EditorInfo#extras TextBoxAttribute.extras}
4840     * Bundle that will be filled in when creating an input connection.  The
4841     * given integer is the resource ID of an XML resource holding an
4842     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4843     *
4844     * @see #getInputExtras(boolean)
4845     * @see EditorInfo#extras
4846     * @attr ref android.R.styleable#TextView_editorExtras
4847     */
4848    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4849        createEditorIfNeeded();
4850        XmlResourceParser parser = getResources().getXml(xmlResId);
4851        mEditor.createInputContentTypeIfNeeded();
4852        mEditor.mInputContentType.extras = new Bundle();
4853        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4854    }
4855
4856    /**
4857     * Retrieve the input extras currently associated with the text view, which
4858     * can be viewed as well as modified.
4859     *
4860     * @param create If true, the extras will be created if they don't already
4861     * exist.  Otherwise, null will be returned if none have been created.
4862     * @see #setInputExtras(int)
4863     * @see EditorInfo#extras
4864     * @attr ref android.R.styleable#TextView_editorExtras
4865     */
4866    public Bundle getInputExtras(boolean create) {
4867        if (mEditor == null && !create) return null;
4868        createEditorIfNeeded();
4869        if (mEditor.mInputContentType == null) {
4870            if (!create) return null;
4871            mEditor.createInputContentTypeIfNeeded();
4872        }
4873        if (mEditor.mInputContentType.extras == null) {
4874            if (!create) return null;
4875            mEditor.mInputContentType.extras = new Bundle();
4876        }
4877        return mEditor.mInputContentType.extras;
4878    }
4879
4880    /**
4881     * Returns the error message that was set to be displayed with
4882     * {@link #setError}, or <code>null</code> if no error was set
4883     * or if it the error was cleared by the widget after user input.
4884     */
4885    public CharSequence getError() {
4886        return mEditor == null ? null : mEditor.mError;
4887    }
4888
4889    /**
4890     * Sets the right-hand compound drawable of the TextView to the "error"
4891     * icon and sets an error message that will be displayed in a popup when
4892     * the TextView has focus.  The icon and error message will be reset to
4893     * null when any key events cause changes to the TextView's text.  If the
4894     * <code>error</code> is <code>null</code>, the error message and icon
4895     * will be cleared.
4896     */
4897    @android.view.RemotableViewMethod
4898    public void setError(CharSequence error) {
4899        if (error == null) {
4900            setError(null, null);
4901        } else {
4902            Drawable dr = getContext().getDrawable(
4903                    com.android.internal.R.drawable.indicator_input_error);
4904
4905            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4906            setError(error, dr);
4907        }
4908    }
4909
4910    /**
4911     * Sets the right-hand compound drawable of the TextView to the specified
4912     * icon and sets an error message that will be displayed in a popup when
4913     * the TextView has focus.  The icon and error message will be reset to
4914     * null when any key events cause changes to the TextView's text.  The
4915     * drawable must already have had {@link Drawable#setBounds} set on it.
4916     * If the <code>error</code> is <code>null</code>, the error message will
4917     * be cleared (and you should provide a <code>null</code> icon as well).
4918     */
4919    public void setError(CharSequence error, Drawable icon) {
4920        createEditorIfNeeded();
4921        mEditor.setError(error, icon);
4922        notifyViewAccessibilityStateChangedIfNeeded(
4923                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
4924    }
4925
4926    @Override
4927    protected boolean setFrame(int l, int t, int r, int b) {
4928        boolean result = super.setFrame(l, t, r, b);
4929
4930        if (mEditor != null) mEditor.setFrame();
4931
4932        restartMarqueeIfNeeded();
4933
4934        return result;
4935    }
4936
4937    private void restartMarqueeIfNeeded() {
4938        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4939            mRestartMarquee = false;
4940            startMarquee();
4941        }
4942    }
4943
4944    /**
4945     * Sets the list of input filters that will be used if the buffer is
4946     * Editable. Has no effect otherwise.
4947     *
4948     * @attr ref android.R.styleable#TextView_maxLength
4949     */
4950    public void setFilters(InputFilter[] filters) {
4951        if (filters == null) {
4952            throw new IllegalArgumentException();
4953        }
4954
4955        mFilters = filters;
4956
4957        if (mText instanceof Editable) {
4958            setFilters((Editable) mText, filters);
4959        }
4960    }
4961
4962    /**
4963     * Sets the list of input filters on the specified Editable,
4964     * and includes mInput in the list if it is an InputFilter.
4965     */
4966    private void setFilters(Editable e, InputFilter[] filters) {
4967        if (mEditor != null) {
4968            final boolean undoFilter = mEditor.mUndoInputFilter != null;
4969            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
4970            int num = 0;
4971            if (undoFilter) num++;
4972            if (keyFilter) num++;
4973            if (num > 0) {
4974                InputFilter[] nf = new InputFilter[filters.length + num];
4975
4976                System.arraycopy(filters, 0, nf, 0, filters.length);
4977                num = 0;
4978                if (undoFilter) {
4979                    nf[filters.length] = mEditor.mUndoInputFilter;
4980                    num++;
4981                }
4982                if (keyFilter) {
4983                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
4984                }
4985
4986                e.setFilters(nf);
4987                return;
4988            }
4989        }
4990        e.setFilters(filters);
4991    }
4992
4993    /**
4994     * Returns the current list of input filters.
4995     *
4996     * @attr ref android.R.styleable#TextView_maxLength
4997     */
4998    public InputFilter[] getFilters() {
4999        return mFilters;
5000    }
5001
5002    /////////////////////////////////////////////////////////////////////////
5003
5004    private int getBoxHeight(Layout l) {
5005        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5006        int padding = (l == mHintLayout) ?
5007                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5008                getExtendedPaddingTop() + getExtendedPaddingBottom();
5009        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5010    }
5011
5012    int getVerticalOffset(boolean forceNormal) {
5013        int voffset = 0;
5014        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5015
5016        Layout l = mLayout;
5017        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5018            l = mHintLayout;
5019        }
5020
5021        if (gravity != Gravity.TOP) {
5022            int boxht = getBoxHeight(l);
5023            int textht = l.getHeight();
5024
5025            if (textht < boxht) {
5026                if (gravity == Gravity.BOTTOM)
5027                    voffset = boxht - textht;
5028                else // (gravity == Gravity.CENTER_VERTICAL)
5029                    voffset = (boxht - textht) >> 1;
5030            }
5031        }
5032        return voffset;
5033    }
5034
5035    private int getBottomVerticalOffset(boolean forceNormal) {
5036        int voffset = 0;
5037        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5038
5039        Layout l = mLayout;
5040        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5041            l = mHintLayout;
5042        }
5043
5044        if (gravity != Gravity.BOTTOM) {
5045            int boxht = getBoxHeight(l);
5046            int textht = l.getHeight();
5047
5048            if (textht < boxht) {
5049                if (gravity == Gravity.TOP)
5050                    voffset = boxht - textht;
5051                else // (gravity == Gravity.CENTER_VERTICAL)
5052                    voffset = (boxht - textht) >> 1;
5053            }
5054        }
5055        return voffset;
5056    }
5057
5058    void invalidateCursorPath() {
5059        if (mHighlightPathBogus) {
5060            invalidateCursor();
5061        } else {
5062            final int horizontalPadding = getCompoundPaddingLeft();
5063            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5064
5065            if (mEditor.mCursorCount == 0) {
5066                synchronized (TEMP_RECTF) {
5067                    /*
5068                     * The reason for this concern about the thickness of the
5069                     * cursor and doing the floor/ceil on the coordinates is that
5070                     * some EditTexts (notably textfields in the Browser) have
5071                     * anti-aliased text where not all the characters are
5072                     * necessarily at integer-multiple locations.  This should
5073                     * make sure the entire cursor gets invalidated instead of
5074                     * sometimes missing half a pixel.
5075                     */
5076                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5077                    if (thick < 1.0f) {
5078                        thick = 1.0f;
5079                    }
5080
5081                    thick /= 2.0f;
5082
5083                    // mHighlightPath is guaranteed to be non null at that point.
5084                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5085
5086                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5087                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5088                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5089                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5090                }
5091            } else {
5092                for (int i = 0; i < mEditor.mCursorCount; i++) {
5093                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5094                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5095                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5096                }
5097            }
5098        }
5099    }
5100
5101    void invalidateCursor() {
5102        int where = getSelectionEnd();
5103
5104        invalidateCursor(where, where, where);
5105    }
5106
5107    private void invalidateCursor(int a, int b, int c) {
5108        if (a >= 0 || b >= 0 || c >= 0) {
5109            int start = Math.min(Math.min(a, b), c);
5110            int end = Math.max(Math.max(a, b), c);
5111            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5112        }
5113    }
5114
5115    /**
5116     * Invalidates the region of text enclosed between the start and end text offsets.
5117     */
5118    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5119        if (mLayout == null) {
5120            invalidate();
5121        } else {
5122                int lineStart = mLayout.getLineForOffset(start);
5123                int top = mLayout.getLineTop(lineStart);
5124
5125                // This is ridiculous, but the descent from the line above
5126                // can hang down into the line we really want to redraw,
5127                // so we have to invalidate part of the line above to make
5128                // sure everything that needs to be redrawn really is.
5129                // (But not the whole line above, because that would cause
5130                // the same problem with the descenders on the line above it!)
5131                if (lineStart > 0) {
5132                    top -= mLayout.getLineDescent(lineStart - 1);
5133                }
5134
5135                int lineEnd;
5136
5137                if (start == end)
5138                    lineEnd = lineStart;
5139                else
5140                    lineEnd = mLayout.getLineForOffset(end);
5141
5142                int bottom = mLayout.getLineBottom(lineEnd);
5143
5144                // mEditor can be null in case selection is set programmatically.
5145                if (invalidateCursor && mEditor != null) {
5146                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5147                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5148                        top = Math.min(top, bounds.top);
5149                        bottom = Math.max(bottom, bounds.bottom);
5150                    }
5151                }
5152
5153                final int compoundPaddingLeft = getCompoundPaddingLeft();
5154                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5155
5156                int left, right;
5157                if (lineStart == lineEnd && !invalidateCursor) {
5158                    left = (int) mLayout.getPrimaryHorizontal(start);
5159                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5160                    left += compoundPaddingLeft;
5161                    right += compoundPaddingLeft;
5162                } else {
5163                    // Rectangle bounding box when the region spans several lines
5164                    left = compoundPaddingLeft;
5165                    right = getWidth() - getCompoundPaddingRight();
5166                }
5167
5168                invalidate(mScrollX + left, verticalPadding + top,
5169                        mScrollX + right, verticalPadding + bottom);
5170        }
5171    }
5172
5173    private void registerForPreDraw() {
5174        if (!mPreDrawRegistered) {
5175            getViewTreeObserver().addOnPreDrawListener(this);
5176            mPreDrawRegistered = true;
5177        }
5178    }
5179
5180    private void unregisterForPreDraw() {
5181        getViewTreeObserver().removeOnPreDrawListener(this);
5182        mPreDrawRegistered = false;
5183        mPreDrawListenerDetached = false;
5184    }
5185
5186    /**
5187     * {@inheritDoc}
5188     */
5189    public boolean onPreDraw() {
5190        if (mLayout == null) {
5191            assumeLayout();
5192        }
5193
5194        if (mMovement != null) {
5195            /* This code also provides auto-scrolling when a cursor is moved using a
5196             * CursorController (insertion point or selection limits).
5197             * For selection, ensure start or end is visible depending on controller's state.
5198             */
5199            int curs = getSelectionEnd();
5200            // Do not create the controller if it is not already created.
5201            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5202                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5203                curs = getSelectionStart();
5204            }
5205
5206            /*
5207             * TODO: This should really only keep the end in view if
5208             * it already was before the text changed.  I'm not sure
5209             * of a good way to tell from here if it was.
5210             */
5211            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5212                curs = mText.length();
5213            }
5214
5215            if (curs >= 0) {
5216                bringPointIntoView(curs);
5217            }
5218        } else {
5219            bringTextIntoView();
5220        }
5221
5222        // This has to be checked here since:
5223        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5224        //   a screen rotation) since layout is not yet initialized at that point.
5225        if (mEditor != null && mEditor.mCreatedWithASelection) {
5226            mEditor.startSelectionActionMode();
5227            mEditor.mCreatedWithASelection = false;
5228        }
5229
5230        // Phone specific code (there is no ExtractEditText on tablets).
5231        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
5232        // not be set. Do the test here instead.
5233        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
5234            mEditor.startSelectionActionMode();
5235        }
5236
5237        unregisterForPreDraw();
5238
5239        return true;
5240    }
5241
5242    @Override
5243    protected void onAttachedToWindow() {
5244        super.onAttachedToWindow();
5245
5246        mTemporaryDetach = false;
5247
5248        if (mEditor != null) mEditor.onAttachedToWindow();
5249
5250        if (mPreDrawListenerDetached) {
5251            getViewTreeObserver().addOnPreDrawListener(this);
5252            mPreDrawListenerDetached = false;
5253        }
5254    }
5255
5256    /** @hide */
5257    @Override
5258    protected void onDetachedFromWindowInternal() {
5259        if (mPreDrawRegistered) {
5260            getViewTreeObserver().removeOnPreDrawListener(this);
5261            mPreDrawListenerDetached = true;
5262        }
5263
5264        resetResolvedDrawables();
5265
5266        if (mEditor != null) mEditor.onDetachedFromWindow();
5267
5268        super.onDetachedFromWindowInternal();
5269    }
5270
5271    @Override
5272    public void onScreenStateChanged(int screenState) {
5273        super.onScreenStateChanged(screenState);
5274        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5275    }
5276
5277    @Override
5278    protected boolean isPaddingOffsetRequired() {
5279        return mShadowRadius != 0 || mDrawables != null;
5280    }
5281
5282    @Override
5283    protected int getLeftPaddingOffset() {
5284        return getCompoundPaddingLeft() - mPaddingLeft +
5285                (int) Math.min(0, mShadowDx - mShadowRadius);
5286    }
5287
5288    @Override
5289    protected int getTopPaddingOffset() {
5290        return (int) Math.min(0, mShadowDy - mShadowRadius);
5291    }
5292
5293    @Override
5294    protected int getBottomPaddingOffset() {
5295        return (int) Math.max(0, mShadowDy + mShadowRadius);
5296    }
5297
5298    private int getFudgedPaddingRight() {
5299        // Add sufficient space for cursor and tone marks
5300        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5301        return Math.max(0, getCompoundPaddingRight() - (cursorWidth - 1));
5302    }
5303
5304    @Override
5305    protected int getRightPaddingOffset() {
5306        return -(getFudgedPaddingRight() - mPaddingRight) +
5307                (int) Math.max(0, mShadowDx + mShadowRadius);
5308    }
5309
5310    @Override
5311    protected boolean verifyDrawable(Drawable who) {
5312        final boolean verified = super.verifyDrawable(who);
5313        if (!verified && mDrawables != null) {
5314            for (Drawable dr : mDrawables.mShowing) {
5315                if (who == dr) {
5316                    return true;
5317                }
5318            }
5319        }
5320        return verified;
5321    }
5322
5323    @Override
5324    public void jumpDrawablesToCurrentState() {
5325        super.jumpDrawablesToCurrentState();
5326        if (mDrawables != null) {
5327            for (Drawable dr : mDrawables.mShowing) {
5328                if (dr != null) {
5329                    dr.jumpToCurrentState();
5330                }
5331            }
5332        }
5333    }
5334
5335    @Override
5336    public void invalidateDrawable(Drawable drawable) {
5337        boolean handled = false;
5338
5339        if (verifyDrawable(drawable)) {
5340            final Rect dirty = drawable.getBounds();
5341            int scrollX = mScrollX;
5342            int scrollY = mScrollY;
5343
5344            // IMPORTANT: The coordinates below are based on the coordinates computed
5345            // for each compound drawable in onDraw(). Make sure to update each section
5346            // accordingly.
5347            final TextView.Drawables drawables = mDrawables;
5348            if (drawables != null) {
5349                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5350                    final int compoundPaddingTop = getCompoundPaddingTop();
5351                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5352                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5353
5354                    scrollX += mPaddingLeft;
5355                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5356                    handled = true;
5357                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5358                    final int compoundPaddingTop = getCompoundPaddingTop();
5359                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5360                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5361
5362                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5363                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5364                    handled = true;
5365                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5366                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5367                    final int compoundPaddingRight = getCompoundPaddingRight();
5368                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5369
5370                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5371                    scrollY += mPaddingTop;
5372                    handled = true;
5373                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5374                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5375                    final int compoundPaddingRight = getCompoundPaddingRight();
5376                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5377
5378                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5379                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5380                    handled = true;
5381                }
5382            }
5383
5384            if (handled) {
5385                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5386                        dirty.right + scrollX, dirty.bottom + scrollY);
5387            }
5388        }
5389
5390        if (!handled) {
5391            super.invalidateDrawable(drawable);
5392        }
5393    }
5394
5395    @Override
5396    public boolean hasOverlappingRendering() {
5397        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5398        return ((getBackground() != null && getBackground().getCurrent() != null)
5399                || mText instanceof Spannable || hasSelection()
5400                || isHorizontalFadingEdgeEnabled());
5401    }
5402
5403    /**
5404     *
5405     * Returns the state of the {@code textIsSelectable} flag (See
5406     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5407     * to allow users to select and copy text in a non-editable TextView, the content of an
5408     * {@link EditText} can always be selected, independently of the value of this flag.
5409     * <p>
5410     *
5411     * @return True if the text displayed in this TextView can be selected by the user.
5412     *
5413     * @attr ref android.R.styleable#TextView_textIsSelectable
5414     */
5415    public boolean isTextSelectable() {
5416        return mEditor == null ? false : mEditor.mTextIsSelectable;
5417    }
5418
5419    /**
5420     * Sets whether the content of this view is selectable by the user. The default is
5421     * {@code false}, meaning that the content is not selectable.
5422     * <p>
5423     * When you use a TextView to display a useful piece of information to the user (such as a
5424     * contact's address), make it selectable, so that the user can select and copy its
5425     * content. You can also use set the XML attribute
5426     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5427     * <p>
5428     * When you call this method to set the value of {@code textIsSelectable}, it sets
5429     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5430     * and {@code longClickable} to the same value. These flags correspond to the attributes
5431     * {@link android.R.styleable#View_focusable android:focusable},
5432     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5433     * {@link android.R.styleable#View_clickable android:clickable}, and
5434     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5435     * flags to a state you had set previously, call one or more of the following methods:
5436     * {@link #setFocusable(boolean) setFocusable()},
5437     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5438     * {@link #setClickable(boolean) setClickable()} or
5439     * {@link #setLongClickable(boolean) setLongClickable()}.
5440     *
5441     * @param selectable Whether the content of this TextView should be selectable.
5442     */
5443    public void setTextIsSelectable(boolean selectable) {
5444        if (!selectable && mEditor == null) return; // false is default value with no edit data
5445
5446        createEditorIfNeeded();
5447        if (mEditor.mTextIsSelectable == selectable) return;
5448
5449        mEditor.mTextIsSelectable = selectable;
5450        setFocusableInTouchMode(selectable);
5451        setFocusable(selectable);
5452        setClickable(selectable);
5453        setLongClickable(selectable);
5454
5455        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5456
5457        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5458        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5459
5460        // Called by setText above, but safer in case of future code changes
5461        mEditor.prepareCursorControllers();
5462    }
5463
5464    @Override
5465    protected int[] onCreateDrawableState(int extraSpace) {
5466        final int[] drawableState;
5467
5468        if (mSingleLine) {
5469            drawableState = super.onCreateDrawableState(extraSpace);
5470        } else {
5471            drawableState = super.onCreateDrawableState(extraSpace + 1);
5472            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5473        }
5474
5475        if (isTextSelectable()) {
5476            // Disable pressed state, which was introduced when TextView was made clickable.
5477            // Prevents text color change.
5478            // setClickable(false) would have a similar effect, but it also disables focus changes
5479            // and long press actions, which are both needed by text selection.
5480            final int length = drawableState.length;
5481            for (int i = 0; i < length; i++) {
5482                if (drawableState[i] == R.attr.state_pressed) {
5483                    final int[] nonPressedState = new int[length - 1];
5484                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5485                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5486                    return nonPressedState;
5487                }
5488            }
5489        }
5490
5491        return drawableState;
5492    }
5493
5494    private Path getUpdatedHighlightPath() {
5495        Path highlight = null;
5496        Paint highlightPaint = mHighlightPaint;
5497
5498        final int selStart = getSelectionStart();
5499        final int selEnd = getSelectionEnd();
5500        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5501            if (selStart == selEnd) {
5502                if (mEditor != null && mEditor.isCursorVisible() &&
5503                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5504                        (2 * Editor.BLINK) < Editor.BLINK) {
5505                    if (mHighlightPathBogus) {
5506                        if (mHighlightPath == null) mHighlightPath = new Path();
5507                        mHighlightPath.reset();
5508                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5509                        mEditor.updateCursorsPositions();
5510                        mHighlightPathBogus = false;
5511                    }
5512
5513                    // XXX should pass to skin instead of drawing directly
5514                    highlightPaint.setColor(mCurTextColor);
5515                    highlightPaint.setStyle(Paint.Style.STROKE);
5516                    highlight = mHighlightPath;
5517                }
5518            } else {
5519                if (mHighlightPathBogus) {
5520                    if (mHighlightPath == null) mHighlightPath = new Path();
5521                    mHighlightPath.reset();
5522                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5523                    mHighlightPathBogus = false;
5524                }
5525
5526                // XXX should pass to skin instead of drawing directly
5527                highlightPaint.setColor(mHighlightColor);
5528                highlightPaint.setStyle(Paint.Style.FILL);
5529
5530                highlight = mHighlightPath;
5531            }
5532        }
5533        return highlight;
5534    }
5535
5536    /**
5537     * @hide
5538     */
5539    public int getHorizontalOffsetForDrawables() {
5540        return 0;
5541    }
5542
5543    @Override
5544    protected void onDraw(Canvas canvas) {
5545        restartMarqueeIfNeeded();
5546
5547        // Draw the background for this view
5548        super.onDraw(canvas);
5549
5550        final int compoundPaddingLeft = getCompoundPaddingLeft();
5551        final int compoundPaddingTop = getCompoundPaddingTop();
5552        final int compoundPaddingRight = getCompoundPaddingRight();
5553        final int compoundPaddingBottom = getCompoundPaddingBottom();
5554        final int scrollX = mScrollX;
5555        final int scrollY = mScrollY;
5556        final int right = mRight;
5557        final int left = mLeft;
5558        final int bottom = mBottom;
5559        final int top = mTop;
5560        final boolean isLayoutRtl = isLayoutRtl();
5561        final int offset = getHorizontalOffsetForDrawables();
5562        final int leftOffset = isLayoutRtl ? 0 : offset;
5563        final int rightOffset = isLayoutRtl ? offset : 0 ;
5564
5565        final Drawables dr = mDrawables;
5566        if (dr != null) {
5567            /*
5568             * Compound, not extended, because the icon is not clipped
5569             * if the text height is smaller.
5570             */
5571
5572            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5573            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5574
5575            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5576            // Make sure to update invalidateDrawable() when changing this code.
5577            if (dr.mShowing[Drawables.LEFT] != null) {
5578                canvas.save();
5579                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5580                                 scrollY + compoundPaddingTop +
5581                                 (vspace - dr.mDrawableHeightLeft) / 2);
5582                dr.mShowing[Drawables.LEFT].draw(canvas);
5583                canvas.restore();
5584            }
5585
5586            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5587            // Make sure to update invalidateDrawable() when changing this code.
5588            if (dr.mShowing[Drawables.RIGHT] != null) {
5589                canvas.save();
5590                canvas.translate(scrollX + right - left - mPaddingRight
5591                        - dr.mDrawableSizeRight - rightOffset,
5592                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5593                dr.mShowing[Drawables.RIGHT].draw(canvas);
5594                canvas.restore();
5595            }
5596
5597            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5598            // Make sure to update invalidateDrawable() when changing this code.
5599            if (dr.mShowing[Drawables.TOP] != null) {
5600                canvas.save();
5601                canvas.translate(scrollX + compoundPaddingLeft +
5602                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5603                dr.mShowing[Drawables.TOP].draw(canvas);
5604                canvas.restore();
5605            }
5606
5607            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5608            // Make sure to update invalidateDrawable() when changing this code.
5609            if (dr.mShowing[Drawables.BOTTOM] != null) {
5610                canvas.save();
5611                canvas.translate(scrollX + compoundPaddingLeft +
5612                        (hspace - dr.mDrawableWidthBottom) / 2,
5613                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5614                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5615                canvas.restore();
5616            }
5617        }
5618
5619        int color = mCurTextColor;
5620
5621        if (mLayout == null) {
5622            assumeLayout();
5623        }
5624
5625        Layout layout = mLayout;
5626
5627        if (mHint != null && mText.length() == 0) {
5628            if (mHintTextColor != null) {
5629                color = mCurHintTextColor;
5630            }
5631
5632            layout = mHintLayout;
5633        }
5634
5635        mTextPaint.setColor(color);
5636        mTextPaint.drawableState = getDrawableState();
5637
5638        canvas.save();
5639        /*  Would be faster if we didn't have to do this. Can we chop the
5640            (displayable) text so that we don't need to do this ever?
5641        */
5642
5643        int extendedPaddingTop = getExtendedPaddingTop();
5644        int extendedPaddingBottom = getExtendedPaddingBottom();
5645
5646        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5647        final int maxScrollY = mLayout.getHeight() - vspace;
5648
5649        float clipLeft = compoundPaddingLeft + scrollX;
5650        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5651        float clipRight = right - left - getFudgedPaddingRight() + scrollX;
5652        float clipBottom = bottom - top + scrollY -
5653                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5654
5655        if (mShadowRadius != 0) {
5656            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5657            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5658
5659            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5660            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5661        }
5662
5663        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5664
5665        int voffsetText = 0;
5666        int voffsetCursor = 0;
5667
5668        // translate in by our padding
5669        /* shortcircuit calling getVerticaOffset() */
5670        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5671            voffsetText = getVerticalOffset(false);
5672            voffsetCursor = getVerticalOffset(true);
5673        }
5674        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5675
5676        final int layoutDirection = getLayoutDirection();
5677        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5678        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5679                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5680            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5681                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5682                final int width = mRight - mLeft;
5683                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5684                final float dx = mLayout.getLineRight(0) - (width - padding);
5685                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5686            }
5687
5688            if (mMarquee != null && mMarquee.isRunning()) {
5689                final float dx = -mMarquee.getScroll();
5690                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5691            }
5692        }
5693
5694        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5695
5696        Path highlight = getUpdatedHighlightPath();
5697        if (mEditor != null) {
5698            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5699        } else {
5700            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5701        }
5702
5703        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5704            final float dx = mMarquee.getGhostOffset();
5705            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5706            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5707        }
5708
5709        canvas.restore();
5710    }
5711
5712    @Override
5713    public void getFocusedRect(Rect r) {
5714        if (mLayout == null) {
5715            super.getFocusedRect(r);
5716            return;
5717        }
5718
5719        int selEnd = getSelectionEnd();
5720        if (selEnd < 0) {
5721            super.getFocusedRect(r);
5722            return;
5723        }
5724
5725        int selStart = getSelectionStart();
5726        if (selStart < 0 || selStart >= selEnd) {
5727            int line = mLayout.getLineForOffset(selEnd);
5728            r.top = mLayout.getLineTop(line);
5729            r.bottom = mLayout.getLineBottom(line);
5730            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5731            r.right = r.left + 4;
5732        } else {
5733            int lineStart = mLayout.getLineForOffset(selStart);
5734            int lineEnd = mLayout.getLineForOffset(selEnd);
5735            r.top = mLayout.getLineTop(lineStart);
5736            r.bottom = mLayout.getLineBottom(lineEnd);
5737            if (lineStart == lineEnd) {
5738                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5739                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5740            } else {
5741                // Selection extends across multiple lines -- make the focused
5742                // rect cover the entire width.
5743                if (mHighlightPathBogus) {
5744                    if (mHighlightPath == null) mHighlightPath = new Path();
5745                    mHighlightPath.reset();
5746                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5747                    mHighlightPathBogus = false;
5748                }
5749                synchronized (TEMP_RECTF) {
5750                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5751                    r.left = (int)TEMP_RECTF.left-1;
5752                    r.right = (int)TEMP_RECTF.right+1;
5753                }
5754            }
5755        }
5756
5757        // Adjust for padding and gravity.
5758        int paddingLeft = getCompoundPaddingLeft();
5759        int paddingTop = getExtendedPaddingTop();
5760        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5761            paddingTop += getVerticalOffset(false);
5762        }
5763        r.offset(paddingLeft, paddingTop);
5764        int paddingBottom = getExtendedPaddingBottom();
5765        r.bottom += paddingBottom;
5766    }
5767
5768    /**
5769     * Return the number of lines of text, or 0 if the internal Layout has not
5770     * been built.
5771     */
5772    public int getLineCount() {
5773        return mLayout != null ? mLayout.getLineCount() : 0;
5774    }
5775
5776    /**
5777     * Return the baseline for the specified line (0...getLineCount() - 1)
5778     * If bounds is not null, return the top, left, right, bottom extents
5779     * of the specified line in it. If the internal Layout has not been built,
5780     * return 0 and set bounds to (0, 0, 0, 0)
5781     * @param line which line to examine (0..getLineCount() - 1)
5782     * @param bounds Optional. If not null, it returns the extent of the line
5783     * @return the Y-coordinate of the baseline
5784     */
5785    public int getLineBounds(int line, Rect bounds) {
5786        if (mLayout == null) {
5787            if (bounds != null) {
5788                bounds.set(0, 0, 0, 0);
5789            }
5790            return 0;
5791        }
5792        else {
5793            int baseline = mLayout.getLineBounds(line, bounds);
5794
5795            int voffset = getExtendedPaddingTop();
5796            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5797                voffset += getVerticalOffset(true);
5798            }
5799            if (bounds != null) {
5800                bounds.offset(getCompoundPaddingLeft(), voffset);
5801            }
5802            return baseline + voffset;
5803        }
5804    }
5805
5806    @Override
5807    public int getBaseline() {
5808        if (mLayout == null) {
5809            return super.getBaseline();
5810        }
5811
5812        int voffset = 0;
5813        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5814            voffset = getVerticalOffset(true);
5815        }
5816
5817        if (isLayoutModeOptical(mParent)) {
5818            voffset -= getOpticalInsets().top;
5819        }
5820
5821        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5822    }
5823
5824    /**
5825     * @hide
5826     */
5827    @Override
5828    protected int getFadeTop(boolean offsetRequired) {
5829        if (mLayout == null) return 0;
5830
5831        int voffset = 0;
5832        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5833            voffset = getVerticalOffset(true);
5834        }
5835
5836        if (offsetRequired) voffset += getTopPaddingOffset();
5837
5838        return getExtendedPaddingTop() + voffset;
5839    }
5840
5841    /**
5842     * @hide
5843     */
5844    @Override
5845    protected int getFadeHeight(boolean offsetRequired) {
5846        return mLayout != null ? mLayout.getHeight() : 0;
5847    }
5848
5849    @Override
5850    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5851        if (keyCode == KeyEvent.KEYCODE_BACK) {
5852            boolean isInSelectionMode = mEditor != null && mEditor.mTextActionMode != null;
5853
5854            if (isInSelectionMode) {
5855                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5856                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5857                    if (state != null) {
5858                        state.startTracking(event, this);
5859                    }
5860                    return true;
5861                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5862                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5863                    if (state != null) {
5864                        state.handleUpEvent(event);
5865                    }
5866                    if (event.isTracking() && !event.isCanceled()) {
5867                        stopTextActionMode();
5868                        return true;
5869                    }
5870                }
5871            }
5872        }
5873        return super.onKeyPreIme(keyCode, event);
5874    }
5875
5876    @Override
5877    public boolean onKeyDown(int keyCode, KeyEvent event) {
5878        int which = doKeyDown(keyCode, event, null);
5879        if (which == 0) {
5880            return super.onKeyDown(keyCode, event);
5881        }
5882
5883        return true;
5884    }
5885
5886    @Override
5887    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5888        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5889
5890        int which = doKeyDown(keyCode, down, event);
5891        if (which == 0) {
5892            // Go through default dispatching.
5893            return super.onKeyMultiple(keyCode, repeatCount, event);
5894        }
5895        if (which == -1) {
5896            // Consumed the whole thing.
5897            return true;
5898        }
5899
5900        repeatCount--;
5901
5902        // We are going to dispatch the remaining events to either the input
5903        // or movement method.  To do this, we will just send a repeated stream
5904        // of down and up events until we have done the complete repeatCount.
5905        // It would be nice if those interfaces had an onKeyMultiple() method,
5906        // but adding that is a more complicated change.
5907        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5908        if (which == 1) {
5909            // mEditor and mEditor.mInput are not null from doKeyDown
5910            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5911            while (--repeatCount > 0) {
5912                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5913                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5914            }
5915            hideErrorIfUnchanged();
5916
5917        } else if (which == 2) {
5918            // mMovement is not null from doKeyDown
5919            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5920            while (--repeatCount > 0) {
5921                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5922                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5923            }
5924        }
5925
5926        return true;
5927    }
5928
5929    /**
5930     * Returns true if pressing ENTER in this field advances focus instead
5931     * of inserting the character.  This is true mostly in single-line fields,
5932     * but also in mail addresses and subjects which will display on multiple
5933     * lines but where it doesn't make sense to insert newlines.
5934     */
5935    private boolean shouldAdvanceFocusOnEnter() {
5936        if (getKeyListener() == null) {
5937            return false;
5938        }
5939
5940        if (mSingleLine) {
5941            return true;
5942        }
5943
5944        if (mEditor != null &&
5945                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5946            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5947            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5948                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5949                return true;
5950            }
5951        }
5952
5953        return false;
5954    }
5955
5956    /**
5957     * Returns true if pressing TAB in this field advances focus instead
5958     * of inserting the character.  Insert tabs only in multi-line editors.
5959     */
5960    private boolean shouldAdvanceFocusOnTab() {
5961        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5962                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5963            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5964            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5965                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5966                return false;
5967            }
5968        }
5969        return true;
5970    }
5971
5972    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5973        if (!isEnabled()) {
5974            return 0;
5975        }
5976
5977        // If this is the initial keydown, we don't want to prevent a movement away from this view.
5978        // While this shouldn't be necessary because any time we're preventing default movement we
5979        // should be restricting the focus to remain within this view, thus we'll also receive
5980        // the key up event, occasionally key up events will get dropped and we don't want to
5981        // prevent the user from traversing out of this on the next key down.
5982        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5983            mPreventDefaultMovement = false;
5984        }
5985
5986        switch (keyCode) {
5987            case KeyEvent.KEYCODE_ENTER:
5988                if (event.hasNoModifiers()) {
5989                    // When mInputContentType is set, we know that we are
5990                    // running in a "modern" cupcake environment, so don't need
5991                    // to worry about the application trying to capture
5992                    // enter key events.
5993                    if (mEditor != null && mEditor.mInputContentType != null) {
5994                        // If there is an action listener, given them a
5995                        // chance to consume the event.
5996                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5997                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5998                                this, EditorInfo.IME_NULL, event)) {
5999                            mEditor.mInputContentType.enterDown = true;
6000                            // We are consuming the enter key for them.
6001                            return -1;
6002                        }
6003                    }
6004
6005                    // If our editor should move focus when enter is pressed, or
6006                    // this is a generated event from an IME action button, then
6007                    // don't let it be inserted into the text.
6008                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6009                            || shouldAdvanceFocusOnEnter()) {
6010                        if (hasOnClickListeners()) {
6011                            return 0;
6012                        }
6013                        return -1;
6014                    }
6015                }
6016                break;
6017
6018            case KeyEvent.KEYCODE_DPAD_CENTER:
6019                if (event.hasNoModifiers()) {
6020                    if (shouldAdvanceFocusOnEnter()) {
6021                        return 0;
6022                    }
6023                }
6024                break;
6025
6026            case KeyEvent.KEYCODE_TAB:
6027                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6028                    if (shouldAdvanceFocusOnTab()) {
6029                        return 0;
6030                    }
6031                }
6032                break;
6033
6034                // Has to be done on key down (and not on key up) to correctly be intercepted.
6035            case KeyEvent.KEYCODE_BACK:
6036                if (mEditor != null && mEditor.mTextActionMode != null) {
6037                    stopTextActionMode();
6038                    return -1;
6039                }
6040                break;
6041        }
6042
6043        if (mEditor != null && mEditor.mKeyListener != null) {
6044            boolean doDown = true;
6045            if (otherEvent != null) {
6046                try {
6047                    beginBatchEdit();
6048                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6049                            otherEvent);
6050                    hideErrorIfUnchanged();
6051                    doDown = false;
6052                    if (handled) {
6053                        return -1;
6054                    }
6055                } catch (AbstractMethodError e) {
6056                    // onKeyOther was added after 1.0, so if it isn't
6057                    // implemented we need to try to dispatch as a regular down.
6058                } finally {
6059                    endBatchEdit();
6060                }
6061            }
6062
6063            if (doDown) {
6064                beginBatchEdit();
6065                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6066                        keyCode, event);
6067                endBatchEdit();
6068                hideErrorIfUnchanged();
6069                if (handled) return 1;
6070            }
6071        }
6072
6073        // bug 650865: sometimes we get a key event before a layout.
6074        // don't try to move around if we don't know the layout.
6075
6076        if (mMovement != null && mLayout != null) {
6077            boolean doDown = true;
6078            if (otherEvent != null) {
6079                try {
6080                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6081                            otherEvent);
6082                    doDown = false;
6083                    if (handled) {
6084                        return -1;
6085                    }
6086                } catch (AbstractMethodError e) {
6087                    // onKeyOther was added after 1.0, so if it isn't
6088                    // implemented we need to try to dispatch as a regular down.
6089                }
6090            }
6091            if (doDown) {
6092                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6093                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6094                        mPreventDefaultMovement = true;
6095                    }
6096                    return 2;
6097                }
6098            }
6099        }
6100
6101        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ? -1 : 0;
6102    }
6103
6104    /**
6105     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6106     * can be recorded.
6107     * @hide
6108     */
6109    public void resetErrorChangedFlag() {
6110        /*
6111         * Keep track of what the error was before doing the input
6112         * so that if an input filter changed the error, we leave
6113         * that error showing.  Otherwise, we take down whatever
6114         * error was showing when the user types something.
6115         */
6116        if (mEditor != null) mEditor.mErrorWasChanged = false;
6117    }
6118
6119    /**
6120     * @hide
6121     */
6122    public void hideErrorIfUnchanged() {
6123        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6124            setError(null, null);
6125        }
6126    }
6127
6128    @Override
6129    public boolean onKeyUp(int keyCode, KeyEvent event) {
6130        if (!isEnabled()) {
6131            return super.onKeyUp(keyCode, event);
6132        }
6133
6134        if (!KeyEvent.isModifierKey(keyCode)) {
6135            mPreventDefaultMovement = false;
6136        }
6137
6138        switch (keyCode) {
6139            case KeyEvent.KEYCODE_DPAD_CENTER:
6140                if (event.hasNoModifiers()) {
6141                    /*
6142                     * If there is a click listener, just call through to
6143                     * super, which will invoke it.
6144                     *
6145                     * If there isn't a click listener, try to show the soft
6146                     * input method.  (It will also
6147                     * call performClick(), but that won't do anything in
6148                     * this case.)
6149                     */
6150                    if (!hasOnClickListeners()) {
6151                        if (mMovement != null && mText instanceof Editable
6152                                && mLayout != null && onCheckIsTextEditor()) {
6153                            InputMethodManager imm = InputMethodManager.peekInstance();
6154                            viewClicked(imm);
6155                            if (imm != null && getShowSoftInputOnFocus()) {
6156                                imm.showSoftInput(this, 0);
6157                            }
6158                        }
6159                    }
6160                }
6161                return super.onKeyUp(keyCode, event);
6162
6163            case KeyEvent.KEYCODE_ENTER:
6164                if (event.hasNoModifiers()) {
6165                    if (mEditor != null && mEditor.mInputContentType != null
6166                            && mEditor.mInputContentType.onEditorActionListener != null
6167                            && mEditor.mInputContentType.enterDown) {
6168                        mEditor.mInputContentType.enterDown = false;
6169                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6170                                this, EditorInfo.IME_NULL, event)) {
6171                            return true;
6172                        }
6173                    }
6174
6175                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6176                            || shouldAdvanceFocusOnEnter()) {
6177                        /*
6178                         * If there is a click listener, just call through to
6179                         * super, which will invoke it.
6180                         *
6181                         * If there isn't a click listener, try to advance focus,
6182                         * but still call through to super, which will reset the
6183                         * pressed state and longpress state.  (It will also
6184                         * call performClick(), but that won't do anything in
6185                         * this case.)
6186                         */
6187                        if (!hasOnClickListeners()) {
6188                            View v = focusSearch(FOCUS_DOWN);
6189
6190                            if (v != null) {
6191                                if (!v.requestFocus(FOCUS_DOWN)) {
6192                                    throw new IllegalStateException(
6193                                            "focus search returned a view " +
6194                                            "that wasn't able to take focus!");
6195                                }
6196
6197                                /*
6198                                 * Return true because we handled the key; super
6199                                 * will return false because there was no click
6200                                 * listener.
6201                                 */
6202                                super.onKeyUp(keyCode, event);
6203                                return true;
6204                            } else if ((event.getFlags()
6205                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6206                                // No target for next focus, but make sure the IME
6207                                // if this came from it.
6208                                InputMethodManager imm = InputMethodManager.peekInstance();
6209                                if (imm != null && imm.isActive(this)) {
6210                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6211                                }
6212                            }
6213                        }
6214                    }
6215                    return super.onKeyUp(keyCode, event);
6216                }
6217                break;
6218        }
6219
6220        if (mEditor != null && mEditor.mKeyListener != null)
6221            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6222                return true;
6223
6224        if (mMovement != null && mLayout != null)
6225            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6226                return true;
6227
6228        return super.onKeyUp(keyCode, event);
6229    }
6230
6231    @Override
6232    public boolean onCheckIsTextEditor() {
6233        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6234    }
6235
6236    @Override
6237    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6238        if (onCheckIsTextEditor() && isEnabled()) {
6239            mEditor.createInputMethodStateIfNeeded();
6240            outAttrs.inputType = getInputType();
6241            if (mEditor.mInputContentType != null) {
6242                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6243                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6244                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6245                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6246                outAttrs.extras = mEditor.mInputContentType.extras;
6247            } else {
6248                outAttrs.imeOptions = EditorInfo.IME_NULL;
6249            }
6250            if (focusSearch(FOCUS_DOWN) != null) {
6251                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6252            }
6253            if (focusSearch(FOCUS_UP) != null) {
6254                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6255            }
6256            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6257                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6258                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6259                    // An action has not been set, but the enter key will move to
6260                    // the next focus, so set the action to that.
6261                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6262                } else {
6263                    // An action has not been set, and there is no focus to move
6264                    // to, so let's just supply a "done" action.
6265                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6266                }
6267                if (!shouldAdvanceFocusOnEnter()) {
6268                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6269                }
6270            }
6271            if (isMultilineInputType(outAttrs.inputType)) {
6272                // Multi-line text editors should always show an enter key.
6273                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6274            }
6275            outAttrs.hintText = mHint;
6276            if (mText instanceof Editable) {
6277                InputConnection ic = new EditableInputConnection(this);
6278                outAttrs.initialSelStart = getSelectionStart();
6279                outAttrs.initialSelEnd = getSelectionEnd();
6280                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6281                return ic;
6282            }
6283        }
6284        return null;
6285    }
6286
6287    /**
6288     * If this TextView contains editable content, extract a portion of it
6289     * based on the information in <var>request</var> in to <var>outText</var>.
6290     * @return Returns true if the text was successfully extracted, else false.
6291     */
6292    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6293        createEditorIfNeeded();
6294        return mEditor.extractText(request, outText);
6295    }
6296
6297    /**
6298     * This is used to remove all style-impacting spans from text before new
6299     * extracted text is being replaced into it, so that we don't have any
6300     * lingering spans applied during the replace.
6301     */
6302    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6303        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6304        int i = spans.length;
6305        while (i > 0) {
6306            i--;
6307            spannable.removeSpan(spans[i]);
6308        }
6309    }
6310
6311    /**
6312     * Apply to this text view the given extracted text, as previously
6313     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6314     */
6315    public void setExtractedText(ExtractedText text) {
6316        Editable content = getEditableText();
6317        if (text.text != null) {
6318            if (content == null) {
6319                setText(text.text, TextView.BufferType.EDITABLE);
6320            } else if (text.partialStartOffset < 0) {
6321                removeParcelableSpans(content, 0, content.length());
6322                content.replace(0, content.length(), text.text);
6323            } else {
6324                final int N = content.length();
6325                int start = text.partialStartOffset;
6326                if (start > N) start = N;
6327                int end = text.partialEndOffset;
6328                if (end > N) end = N;
6329                removeParcelableSpans(content, start, end);
6330                content.replace(start, end, text.text);
6331            }
6332        }
6333
6334        // Now set the selection position...  make sure it is in range, to
6335        // avoid crashes.  If this is a partial update, it is possible that
6336        // the underlying text may have changed, causing us problems here.
6337        // Also we just don't want to trust clients to do the right thing.
6338        Spannable sp = (Spannable)getText();
6339        final int N = sp.length();
6340        int start = text.selectionStart;
6341        if (start < 0) start = 0;
6342        else if (start > N) start = N;
6343        int end = text.selectionEnd;
6344        if (end < 0) end = 0;
6345        else if (end > N) end = N;
6346        Selection.setSelection(sp, start, end);
6347
6348        // Finally, update the selection mode.
6349        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6350            MetaKeyKeyListener.startSelecting(this, sp);
6351        } else {
6352            MetaKeyKeyListener.stopSelecting(this, sp);
6353        }
6354    }
6355
6356    /**
6357     * @hide
6358     */
6359    public void setExtracting(ExtractedTextRequest req) {
6360        if (mEditor.mInputMethodState != null) {
6361            mEditor.mInputMethodState.mExtractedTextRequest = req;
6362        }
6363        // This would stop a possible selection mode, but no such mode is started in case
6364        // extracted mode will start. Some text is selected though, and will trigger an action mode
6365        // in the extracted view.
6366        mEditor.hideControllers();
6367        stopTextActionMode();
6368    }
6369
6370    /**
6371     * Called by the framework in response to a text completion from
6372     * the current input method, provided by it calling
6373     * {@link InputConnection#commitCompletion
6374     * InputConnection.commitCompletion()}.  The default implementation does
6375     * nothing; text views that are supporting auto-completion should override
6376     * this to do their desired behavior.
6377     *
6378     * @param text The auto complete text the user has selected.
6379     */
6380    public void onCommitCompletion(CompletionInfo text) {
6381        // intentionally empty
6382    }
6383
6384    /**
6385     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6386     * a dictionnary) from the current input method, provided by it calling
6387     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6388     * implementation flashes the background of the corrected word to provide feedback to the user.
6389     *
6390     * @param info The auto correct info about the text that was corrected.
6391     */
6392    public void onCommitCorrection(CorrectionInfo info) {
6393        if (mEditor != null) mEditor.onCommitCorrection(info);
6394    }
6395
6396    public void beginBatchEdit() {
6397        if (mEditor != null) mEditor.beginBatchEdit();
6398    }
6399
6400    public void endBatchEdit() {
6401        if (mEditor != null) mEditor.endBatchEdit();
6402    }
6403
6404    /**
6405     * Called by the framework in response to a request to begin a batch
6406     * of edit operations through a call to link {@link #beginBatchEdit()}.
6407     */
6408    public void onBeginBatchEdit() {
6409        // intentionally empty
6410    }
6411
6412    /**
6413     * Called by the framework in response to a request to end a batch
6414     * of edit operations through a call to link {@link #endBatchEdit}.
6415     */
6416    public void onEndBatchEdit() {
6417        // intentionally empty
6418    }
6419
6420    /**
6421     * Called by the framework in response to a private command from the
6422     * current method, provided by it calling
6423     * {@link InputConnection#performPrivateCommand
6424     * InputConnection.performPrivateCommand()}.
6425     *
6426     * @param action The action name of the command.
6427     * @param data Any additional data for the command.  This may be null.
6428     * @return Return true if you handled the command, else false.
6429     */
6430    public boolean onPrivateIMECommand(String action, Bundle data) {
6431        return false;
6432    }
6433
6434    private void nullLayouts() {
6435        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6436            mSavedLayout = (BoringLayout) mLayout;
6437        }
6438        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6439            mSavedHintLayout = (BoringLayout) mHintLayout;
6440        }
6441
6442        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6443
6444        mBoring = mHintBoring = null;
6445
6446        // Since it depends on the value of mLayout
6447        if (mEditor != null) mEditor.prepareCursorControllers();
6448    }
6449
6450    /**
6451     * Make a new Layout based on the already-measured size of the view,
6452     * on the assumption that it was measured correctly at some point.
6453     */
6454    private void assumeLayout() {
6455        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6456
6457        if (width < 1) {
6458            width = 0;
6459        }
6460
6461        int physicalWidth = width;
6462
6463        if (mHorizontallyScrolling) {
6464            width = VERY_WIDE;
6465        }
6466
6467        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6468                      physicalWidth, false);
6469    }
6470
6471    private Layout.Alignment getLayoutAlignment() {
6472        Layout.Alignment alignment;
6473        switch (getTextAlignment()) {
6474            case TEXT_ALIGNMENT_GRAVITY:
6475                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6476                    case Gravity.START:
6477                        alignment = Layout.Alignment.ALIGN_NORMAL;
6478                        break;
6479                    case Gravity.END:
6480                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6481                        break;
6482                    case Gravity.LEFT:
6483                        alignment = Layout.Alignment.ALIGN_LEFT;
6484                        break;
6485                    case Gravity.RIGHT:
6486                        alignment = Layout.Alignment.ALIGN_RIGHT;
6487                        break;
6488                    case Gravity.CENTER_HORIZONTAL:
6489                        alignment = Layout.Alignment.ALIGN_CENTER;
6490                        break;
6491                    default:
6492                        alignment = Layout.Alignment.ALIGN_NORMAL;
6493                        break;
6494                }
6495                break;
6496            case TEXT_ALIGNMENT_TEXT_START:
6497                alignment = Layout.Alignment.ALIGN_NORMAL;
6498                break;
6499            case TEXT_ALIGNMENT_TEXT_END:
6500                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6501                break;
6502            case TEXT_ALIGNMENT_CENTER:
6503                alignment = Layout.Alignment.ALIGN_CENTER;
6504                break;
6505            case TEXT_ALIGNMENT_VIEW_START:
6506                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6507                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6508                break;
6509            case TEXT_ALIGNMENT_VIEW_END:
6510                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6511                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6512                break;
6513            case TEXT_ALIGNMENT_INHERIT:
6514                // This should never happen as we have already resolved the text alignment
6515                // but better safe than sorry so we just fall through
6516            default:
6517                alignment = Layout.Alignment.ALIGN_NORMAL;
6518                break;
6519        }
6520        return alignment;
6521    }
6522
6523    /**
6524     * The width passed in is now the desired layout width,
6525     * not the full view width with padding.
6526     * {@hide}
6527     */
6528    protected void makeNewLayout(int wantWidth, int hintWidth,
6529                                 BoringLayout.Metrics boring,
6530                                 BoringLayout.Metrics hintBoring,
6531                                 int ellipsisWidth, boolean bringIntoView) {
6532        stopMarquee();
6533
6534        // Update "old" cached values
6535        mOldMaximum = mMaximum;
6536        mOldMaxMode = mMaxMode;
6537
6538        mHighlightPathBogus = true;
6539
6540        if (wantWidth < 0) {
6541            wantWidth = 0;
6542        }
6543        if (hintWidth < 0) {
6544            hintWidth = 0;
6545        }
6546
6547        Layout.Alignment alignment = getLayoutAlignment();
6548        final boolean testDirChange = mSingleLine && mLayout != null &&
6549            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6550             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6551        int oldDir = 0;
6552        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6553        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6554        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6555                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6556        TruncateAt effectiveEllipsize = mEllipsize;
6557        if (mEllipsize == TruncateAt.MARQUEE &&
6558                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6559            effectiveEllipsize = TruncateAt.END_SMALL;
6560        }
6561
6562        if (mTextDir == null) {
6563            mTextDir = getTextDirectionHeuristic();
6564        }
6565
6566        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6567                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6568        if (switchEllipsize) {
6569            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6570                    TruncateAt.END : TruncateAt.MARQUEE;
6571            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6572                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6573        }
6574
6575        shouldEllipsize = mEllipsize != null;
6576        mHintLayout = null;
6577
6578        if (mHint != null) {
6579            if (shouldEllipsize) hintWidth = wantWidth;
6580
6581            if (hintBoring == UNKNOWN_BORING) {
6582                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6583                                                   mHintBoring);
6584                if (hintBoring != null) {
6585                    mHintBoring = hintBoring;
6586                }
6587            }
6588
6589            if (hintBoring != null) {
6590                if (hintBoring.width <= hintWidth &&
6591                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6592                    if (mSavedHintLayout != null) {
6593                        mHintLayout = mSavedHintLayout.
6594                                replaceOrMake(mHint, mTextPaint,
6595                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6596                                hintBoring, mIncludePad);
6597                    } else {
6598                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6599                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6600                                hintBoring, mIncludePad);
6601                    }
6602
6603                    mSavedHintLayout = (BoringLayout) mHintLayout;
6604                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6605                    if (mSavedHintLayout != null) {
6606                        mHintLayout = mSavedHintLayout.
6607                                replaceOrMake(mHint, mTextPaint,
6608                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6609                                hintBoring, mIncludePad, mEllipsize,
6610                                ellipsisWidth);
6611                    } else {
6612                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6613                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6614                                hintBoring, mIncludePad, mEllipsize,
6615                                ellipsisWidth);
6616                    }
6617                }
6618            }
6619            // TODO: code duplication with makeSingleLayout()
6620            if (mHintLayout == null) {
6621                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6622                        mHint.length(), mTextPaint, hintWidth)
6623                        .setAlignment(alignment)
6624                        .setTextDirection(mTextDir)
6625                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6626                        .setIncludePad(mIncludePad)
6627                        .setBreakStrategy(mBreakStrategy)
6628                        .setHyphenationFrequency(mHyphenationFrequency);
6629                if (shouldEllipsize) {
6630                    builder.setEllipsize(mEllipsize)
6631                            .setEllipsizedWidth(ellipsisWidth)
6632                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6633                }
6634                mHintLayout = builder.build();
6635            }
6636        }
6637
6638        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6639            registerForPreDraw();
6640        }
6641
6642        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6643            if (!compressText(ellipsisWidth)) {
6644                final int height = mLayoutParams.height;
6645                // If the size of the view does not depend on the size of the text, try to
6646                // start the marquee immediately
6647                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6648                    startMarquee();
6649                } else {
6650                    // Defer the start of the marquee until we know our width (see setFrame())
6651                    mRestartMarquee = true;
6652                }
6653            }
6654        }
6655
6656        // CursorControllers need a non-null mLayout
6657        if (mEditor != null) mEditor.prepareCursorControllers();
6658    }
6659
6660    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6661            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6662            boolean useSaved) {
6663        Layout result = null;
6664        if (mText instanceof Spannable) {
6665            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6666                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6667                    mBreakStrategy, mHyphenationFrequency,
6668                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6669        } else {
6670            if (boring == UNKNOWN_BORING) {
6671                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6672                if (boring != null) {
6673                    mBoring = boring;
6674                }
6675            }
6676
6677            if (boring != null) {
6678                if (boring.width <= wantWidth &&
6679                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6680                    if (useSaved && mSavedLayout != null) {
6681                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6682                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6683                                boring, mIncludePad);
6684                    } else {
6685                        result = BoringLayout.make(mTransformed, mTextPaint,
6686                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6687                                boring, mIncludePad);
6688                    }
6689
6690                    if (useSaved) {
6691                        mSavedLayout = (BoringLayout) result;
6692                    }
6693                } else if (shouldEllipsize && boring.width <= wantWidth) {
6694                    if (useSaved && mSavedLayout != null) {
6695                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6696                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6697                                boring, mIncludePad, effectiveEllipsize,
6698                                ellipsisWidth);
6699                    } else {
6700                        result = BoringLayout.make(mTransformed, mTextPaint,
6701                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6702                                boring, mIncludePad, effectiveEllipsize,
6703                                ellipsisWidth);
6704                    }
6705                }
6706            }
6707        }
6708        if (result == null) {
6709            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6710                    0, mTransformed.length(), mTextPaint, wantWidth)
6711                    .setAlignment(alignment)
6712                    .setTextDirection(mTextDir)
6713                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6714                    .setIncludePad(mIncludePad)
6715                    .setBreakStrategy(mBreakStrategy)
6716                    .setHyphenationFrequency(mHyphenationFrequency);
6717            if (shouldEllipsize) {
6718                builder.setEllipsize(effectiveEllipsize)
6719                        .setEllipsizedWidth(ellipsisWidth)
6720                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6721            }
6722            // TODO: explore always setting maxLines
6723            result = builder.build();
6724        }
6725        return result;
6726    }
6727
6728    private boolean compressText(float width) {
6729        if (isHardwareAccelerated()) return false;
6730
6731        // Only compress the text if it hasn't been compressed by the previous pass
6732        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6733                mTextPaint.getTextScaleX() == 1.0f) {
6734            final float textWidth = mLayout.getLineWidth(0);
6735            final float overflow = (textWidth + 1.0f - width) / width;
6736            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6737                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6738                post(new Runnable() {
6739                    public void run() {
6740                        requestLayout();
6741                    }
6742                });
6743                return true;
6744            }
6745        }
6746
6747        return false;
6748    }
6749
6750    private static int desired(Layout layout) {
6751        int n = layout.getLineCount();
6752        CharSequence text = layout.getText();
6753        float max = 0;
6754
6755        // if any line was wrapped, we can't use it.
6756        // but it's ok for the last line not to have a newline
6757
6758        for (int i = 0; i < n - 1; i++) {
6759            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6760                return -1;
6761        }
6762
6763        for (int i = 0; i < n; i++) {
6764            max = Math.max(max, layout.getLineWidth(i));
6765        }
6766
6767        return (int) Math.ceil(max);
6768    }
6769
6770    /**
6771     * Set whether the TextView includes extra top and bottom padding to make
6772     * room for accents that go above the normal ascent and descent.
6773     * The default is true.
6774     *
6775     * @see #getIncludeFontPadding()
6776     *
6777     * @attr ref android.R.styleable#TextView_includeFontPadding
6778     */
6779    public void setIncludeFontPadding(boolean includepad) {
6780        if (mIncludePad != includepad) {
6781            mIncludePad = includepad;
6782
6783            if (mLayout != null) {
6784                nullLayouts();
6785                requestLayout();
6786                invalidate();
6787            }
6788        }
6789    }
6790
6791    /**
6792     * Gets whether the TextView includes extra top and bottom padding to make
6793     * room for accents that go above the normal ascent and descent.
6794     *
6795     * @see #setIncludeFontPadding(boolean)
6796     *
6797     * @attr ref android.R.styleable#TextView_includeFontPadding
6798     */
6799    public boolean getIncludeFontPadding() {
6800        return mIncludePad;
6801    }
6802
6803    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6804
6805    @Override
6806    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6807        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6808        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6809        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6810        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6811
6812        int width;
6813        int height;
6814
6815        BoringLayout.Metrics boring = UNKNOWN_BORING;
6816        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6817
6818        if (mTextDir == null) {
6819            mTextDir = getTextDirectionHeuristic();
6820        }
6821
6822        int des = -1;
6823        boolean fromexisting = false;
6824
6825        if (widthMode == MeasureSpec.EXACTLY) {
6826            // Parent has told us how big to be. So be it.
6827            width = widthSize;
6828        } else {
6829            if (mLayout != null && mEllipsize == null) {
6830                des = desired(mLayout);
6831            }
6832
6833            if (des < 0) {
6834                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6835                if (boring != null) {
6836                    mBoring = boring;
6837                }
6838            } else {
6839                fromexisting = true;
6840            }
6841
6842            if (boring == null || boring == UNKNOWN_BORING) {
6843                if (des < 0) {
6844                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6845                }
6846                width = des;
6847            } else {
6848                width = boring.width;
6849            }
6850
6851            final Drawables dr = mDrawables;
6852            if (dr != null) {
6853                width = Math.max(width, dr.mDrawableWidthTop);
6854                width = Math.max(width, dr.mDrawableWidthBottom);
6855            }
6856
6857            if (mHint != null) {
6858                int hintDes = -1;
6859                int hintWidth;
6860
6861                if (mHintLayout != null && mEllipsize == null) {
6862                    hintDes = desired(mHintLayout);
6863                }
6864
6865                if (hintDes < 0) {
6866                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6867                    if (hintBoring != null) {
6868                        mHintBoring = hintBoring;
6869                    }
6870                }
6871
6872                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6873                    if (hintDes < 0) {
6874                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6875                    }
6876                    hintWidth = hintDes;
6877                } else {
6878                    hintWidth = hintBoring.width;
6879                }
6880
6881                if (hintWidth > width) {
6882                    width = hintWidth;
6883                }
6884            }
6885
6886            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6887
6888            if (mMaxWidthMode == EMS) {
6889                width = Math.min(width, mMaxWidth * getLineHeight());
6890            } else {
6891                width = Math.min(width, mMaxWidth);
6892            }
6893
6894            if (mMinWidthMode == EMS) {
6895                width = Math.max(width, mMinWidth * getLineHeight());
6896            } else {
6897                width = Math.max(width, mMinWidth);
6898            }
6899
6900            // Check against our minimum width
6901            width = Math.max(width, getSuggestedMinimumWidth());
6902
6903            if (widthMode == MeasureSpec.AT_MOST) {
6904                width = Math.min(widthSize, width);
6905            }
6906        }
6907
6908        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6909        int unpaddedWidth = want;
6910
6911        if (mHorizontallyScrolling) want = VERY_WIDE;
6912
6913        int hintWant = want;
6914        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6915
6916        if (mLayout == null) {
6917            makeNewLayout(want, hintWant, boring, hintBoring,
6918                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6919        } else {
6920            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6921                    (hintWidth != hintWant) ||
6922                    (mLayout.getEllipsizedWidth() !=
6923                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6924
6925            final boolean widthChanged = (mHint == null) &&
6926                    (mEllipsize == null) &&
6927                    (want > mLayout.getWidth()) &&
6928                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6929
6930            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6931
6932            if (layoutChanged || maximumChanged) {
6933                if (!maximumChanged && widthChanged) {
6934                    mLayout.increaseWidthTo(want);
6935                } else {
6936                    makeNewLayout(want, hintWant, boring, hintBoring,
6937                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6938                }
6939            } else {
6940                // Nothing has changed
6941            }
6942        }
6943
6944        if (heightMode == MeasureSpec.EXACTLY) {
6945            // Parent has told us how big to be. So be it.
6946            height = heightSize;
6947            mDesiredHeightAtMeasure = -1;
6948        } else {
6949            int desired = getDesiredHeight();
6950
6951            height = desired;
6952            mDesiredHeightAtMeasure = desired;
6953
6954            if (heightMode == MeasureSpec.AT_MOST) {
6955                height = Math.min(desired, heightSize);
6956            }
6957        }
6958
6959        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6960        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6961            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6962        }
6963
6964        /*
6965         * We didn't let makeNewLayout() register to bring the cursor into view,
6966         * so do it here if there is any possibility that it is needed.
6967         */
6968        if (mMovement != null ||
6969            mLayout.getWidth() > unpaddedWidth ||
6970            mLayout.getHeight() > unpaddedHeight) {
6971            registerForPreDraw();
6972        } else {
6973            scrollTo(0, 0);
6974        }
6975
6976        setMeasuredDimension(width, height);
6977    }
6978
6979    private int getDesiredHeight() {
6980        return Math.max(
6981                getDesiredHeight(mLayout, true),
6982                getDesiredHeight(mHintLayout, mEllipsize != null));
6983    }
6984
6985    private int getDesiredHeight(Layout layout, boolean cap) {
6986        if (layout == null) {
6987            return 0;
6988        }
6989
6990        int linecount = layout.getLineCount();
6991        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6992        int desired = layout.getLineTop(linecount);
6993
6994        final Drawables dr = mDrawables;
6995        if (dr != null) {
6996            desired = Math.max(desired, dr.mDrawableHeightLeft);
6997            desired = Math.max(desired, dr.mDrawableHeightRight);
6998        }
6999
7000        desired += pad;
7001
7002        if (mMaxMode == LINES) {
7003            /*
7004             * Don't cap the hint to a certain number of lines.
7005             * (Do cap it, though, if we have a maximum pixel height.)
7006             */
7007            if (cap) {
7008                if (linecount > mMaximum) {
7009                    desired = layout.getLineTop(mMaximum);
7010
7011                    if (dr != null) {
7012                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7013                        desired = Math.max(desired, dr.mDrawableHeightRight);
7014                    }
7015
7016                    desired += pad;
7017                    linecount = mMaximum;
7018                }
7019            }
7020        } else {
7021            desired = Math.min(desired, mMaximum);
7022        }
7023
7024        if (mMinMode == LINES) {
7025            if (linecount < mMinimum) {
7026                desired += getLineHeight() * (mMinimum - linecount);
7027            }
7028        } else {
7029            desired = Math.max(desired, mMinimum);
7030        }
7031
7032        // Check against our minimum height
7033        desired = Math.max(desired, getSuggestedMinimumHeight());
7034
7035        return desired;
7036    }
7037
7038    /**
7039     * Check whether a change to the existing text layout requires a
7040     * new view layout.
7041     */
7042    private void checkForResize() {
7043        boolean sizeChanged = false;
7044
7045        if (mLayout != null) {
7046            // Check if our width changed
7047            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7048                sizeChanged = true;
7049                invalidate();
7050            }
7051
7052            // Check if our height changed
7053            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7054                int desiredHeight = getDesiredHeight();
7055
7056                if (desiredHeight != this.getHeight()) {
7057                    sizeChanged = true;
7058                }
7059            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7060                if (mDesiredHeightAtMeasure >= 0) {
7061                    int desiredHeight = getDesiredHeight();
7062
7063                    if (desiredHeight != mDesiredHeightAtMeasure) {
7064                        sizeChanged = true;
7065                    }
7066                }
7067            }
7068        }
7069
7070        if (sizeChanged) {
7071            requestLayout();
7072            // caller will have already invalidated
7073        }
7074    }
7075
7076    /**
7077     * Check whether entirely new text requires a new view layout
7078     * or merely a new text layout.
7079     */
7080    private void checkForRelayout() {
7081        // If we have a fixed width, we can just swap in a new text layout
7082        // if the text height stays the same or if the view height is fixed.
7083
7084        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7085                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7086                (mHint == null || mHintLayout != null) &&
7087                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7088            // Static width, so try making a new text layout.
7089
7090            int oldht = mLayout.getHeight();
7091            int want = mLayout.getWidth();
7092            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7093
7094            /*
7095             * No need to bring the text into view, since the size is not
7096             * changing (unless we do the requestLayout(), in which case it
7097             * will happen at measure).
7098             */
7099            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7100                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7101                          false);
7102
7103            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7104                // In a fixed-height view, so use our new text layout.
7105                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7106                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7107                    invalidate();
7108                    return;
7109                }
7110
7111                // Dynamic height, but height has stayed the same,
7112                // so use our new text layout.
7113                if (mLayout.getHeight() == oldht &&
7114                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7115                    invalidate();
7116                    return;
7117                }
7118            }
7119
7120            // We lose: the height has changed and we have a dynamic height.
7121            // Request a new view layout using our new text layout.
7122            requestLayout();
7123            invalidate();
7124        } else {
7125            // Dynamic width, so we have no choice but to request a new
7126            // view layout with a new text layout.
7127            nullLayouts();
7128            requestLayout();
7129            invalidate();
7130        }
7131    }
7132
7133    @Override
7134    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7135        super.onLayout(changed, left, top, right, bottom);
7136        if (mDeferScroll >= 0) {
7137            int curs = mDeferScroll;
7138            mDeferScroll = -1;
7139            bringPointIntoView(Math.min(curs, mText.length()));
7140        }
7141    }
7142
7143    private boolean isShowingHint() {
7144        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7145    }
7146
7147    /**
7148     * Returns true if anything changed.
7149     */
7150    private boolean bringTextIntoView() {
7151        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7152        int line = 0;
7153        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7154            line = layout.getLineCount() - 1;
7155        }
7156
7157        Layout.Alignment a = layout.getParagraphAlignment(line);
7158        int dir = layout.getParagraphDirection(line);
7159        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7160        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7161        int ht = layout.getHeight();
7162
7163        int scrollx, scrolly;
7164
7165        // Convert to left, center, or right alignment.
7166        if (a == Layout.Alignment.ALIGN_NORMAL) {
7167            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7168                Layout.Alignment.ALIGN_RIGHT;
7169        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7170            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7171                Layout.Alignment.ALIGN_LEFT;
7172        }
7173
7174        if (a == Layout.Alignment.ALIGN_CENTER) {
7175            /*
7176             * Keep centered if possible, or, if it is too wide to fit,
7177             * keep leading edge in view.
7178             */
7179
7180            int left = (int) Math.floor(layout.getLineLeft(line));
7181            int right = (int) Math.ceil(layout.getLineRight(line));
7182
7183            if (right - left < hspace) {
7184                scrollx = (right + left) / 2 - hspace / 2;
7185            } else {
7186                if (dir < 0) {
7187                    scrollx = right - hspace;
7188                } else {
7189                    scrollx = left;
7190                }
7191            }
7192        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7193            int right = (int) Math.ceil(layout.getLineRight(line));
7194            scrollx = right - hspace;
7195        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7196            scrollx = (int) Math.floor(layout.getLineLeft(line));
7197        }
7198
7199        if (ht < vspace) {
7200            scrolly = 0;
7201        } else {
7202            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7203                scrolly = ht - vspace;
7204            } else {
7205                scrolly = 0;
7206            }
7207        }
7208
7209        if (scrollx != mScrollX || scrolly != mScrollY) {
7210            scrollTo(scrollx, scrolly);
7211            return true;
7212        } else {
7213            return false;
7214        }
7215    }
7216
7217    /**
7218     * Move the point, specified by the offset, into the view if it is needed.
7219     * This has to be called after layout. Returns true if anything changed.
7220     */
7221    public boolean bringPointIntoView(int offset) {
7222        if (isLayoutRequested()) {
7223            mDeferScroll = offset;
7224            return false;
7225        }
7226        boolean changed = false;
7227
7228        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7229
7230        if (layout == null) return changed;
7231
7232        int line = layout.getLineForOffset(offset);
7233
7234        int grav;
7235
7236        switch (layout.getParagraphAlignment(line)) {
7237            case ALIGN_LEFT:
7238                grav = 1;
7239                break;
7240            case ALIGN_RIGHT:
7241                grav = -1;
7242                break;
7243            case ALIGN_NORMAL:
7244                grav = layout.getParagraphDirection(line);
7245                break;
7246            case ALIGN_OPPOSITE:
7247                grav = -layout.getParagraphDirection(line);
7248                break;
7249            case ALIGN_CENTER:
7250            default:
7251                grav = 0;
7252                break;
7253        }
7254
7255        // We only want to clamp the cursor to fit within the layout width
7256        // in left-to-right modes, because in a right to left alignment,
7257        // we want to scroll to keep the line-right on the screen, as other
7258        // lines are likely to have text flush with the right margin, which
7259        // we want to keep visible.
7260        // A better long-term solution would probably be to measure both
7261        // the full line and a blank-trimmed version, and, for example, use
7262        // the latter measurement for centering and right alignment, but for
7263        // the time being we only implement the cursor clamping in left to
7264        // right where it is most likely to be annoying.
7265        final boolean clamped = grav > 0;
7266        // FIXME: Is it okay to truncate this, or should we round?
7267        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7268        final int top = layout.getLineTop(line);
7269        final int bottom = layout.getLineTop(line + 1);
7270
7271        int left = (int) Math.floor(layout.getLineLeft(line));
7272        int right = (int) Math.ceil(layout.getLineRight(line));
7273        int ht = layout.getHeight();
7274
7275        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7276        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7277        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7278            // If cursor has been clamped, make sure we don't scroll.
7279            right = Math.max(x, left + hspace);
7280        }
7281
7282        int hslack = (bottom - top) / 2;
7283        int vslack = hslack;
7284
7285        if (vslack > vspace / 4)
7286            vslack = vspace / 4;
7287        if (hslack > hspace / 4)
7288            hslack = hspace / 4;
7289
7290        int hs = mScrollX;
7291        int vs = mScrollY;
7292
7293        if (top - vs < vslack)
7294            vs = top - vslack;
7295        if (bottom - vs > vspace - vslack)
7296            vs = bottom - (vspace - vslack);
7297        if (ht - vs < vspace)
7298            vs = ht - vspace;
7299        if (0 - vs > 0)
7300            vs = 0;
7301
7302        if (grav != 0) {
7303            if (x - hs < hslack) {
7304                hs = x - hslack;
7305            }
7306            if (x - hs > hspace - hslack) {
7307                hs = x - (hspace - hslack);
7308            }
7309        }
7310
7311        if (grav < 0) {
7312            if (left - hs > 0)
7313                hs = left;
7314            if (right - hs < hspace)
7315                hs = right - hspace;
7316        } else if (grav > 0) {
7317            if (right - hs < hspace)
7318                hs = right - hspace;
7319            if (left - hs > 0)
7320                hs = left;
7321        } else /* grav == 0 */ {
7322            if (right - left <= hspace) {
7323                /*
7324                 * If the entire text fits, center it exactly.
7325                 */
7326                hs = left - (hspace - (right - left)) / 2;
7327            } else if (x > right - hslack) {
7328                /*
7329                 * If we are near the right edge, keep the right edge
7330                 * at the edge of the view.
7331                 */
7332                hs = right - hspace;
7333            } else if (x < left + hslack) {
7334                /*
7335                 * If we are near the left edge, keep the left edge
7336                 * at the edge of the view.
7337                 */
7338                hs = left;
7339            } else if (left > hs) {
7340                /*
7341                 * Is there whitespace visible at the left?  Fix it if so.
7342                 */
7343                hs = left;
7344            } else if (right < hs + hspace) {
7345                /*
7346                 * Is there whitespace visible at the right?  Fix it if so.
7347                 */
7348                hs = right - hspace;
7349            } else {
7350                /*
7351                 * Otherwise, float as needed.
7352                 */
7353                if (x - hs < hslack) {
7354                    hs = x - hslack;
7355                }
7356                if (x - hs > hspace - hslack) {
7357                    hs = x - (hspace - hslack);
7358                }
7359            }
7360        }
7361
7362        if (hs != mScrollX || vs != mScrollY) {
7363            if (mScroller == null) {
7364                scrollTo(hs, vs);
7365            } else {
7366                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7367                int dx = hs - mScrollX;
7368                int dy = vs - mScrollY;
7369
7370                if (duration > ANIMATED_SCROLL_GAP) {
7371                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7372                    awakenScrollBars(mScroller.getDuration());
7373                    invalidate();
7374                } else {
7375                    if (!mScroller.isFinished()) {
7376                        mScroller.abortAnimation();
7377                    }
7378
7379                    scrollBy(dx, dy);
7380                }
7381
7382                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7383            }
7384
7385            changed = true;
7386        }
7387
7388        if (isFocused()) {
7389            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7390            // requestRectangleOnScreen() is in terms of content coordinates.
7391
7392            // The offsets here are to ensure the rectangle we are using is
7393            // within our view bounds, in case the cursor is on the far left
7394            // or right.  If it isn't withing the bounds, then this request
7395            // will be ignored.
7396            if (mTempRect == null) mTempRect = new Rect();
7397            mTempRect.set(x - 2, top, x + 2, bottom);
7398            getInterestingRect(mTempRect, line);
7399            mTempRect.offset(mScrollX, mScrollY);
7400
7401            if (requestRectangleOnScreen(mTempRect)) {
7402                changed = true;
7403            }
7404        }
7405
7406        return changed;
7407    }
7408
7409    /**
7410     * Move the cursor, if needed, so that it is at an offset that is visible
7411     * to the user.  This will not move the cursor if it represents more than
7412     * one character (a selection range).  This will only work if the
7413     * TextView contains spannable text; otherwise it will do nothing.
7414     *
7415     * @return True if the cursor was actually moved, false otherwise.
7416     */
7417    public boolean moveCursorToVisibleOffset() {
7418        if (!(mText instanceof Spannable)) {
7419            return false;
7420        }
7421        int start = getSelectionStart();
7422        int end = getSelectionEnd();
7423        if (start != end) {
7424            return false;
7425        }
7426
7427        // First: make sure the line is visible on screen:
7428
7429        int line = mLayout.getLineForOffset(start);
7430
7431        final int top = mLayout.getLineTop(line);
7432        final int bottom = mLayout.getLineTop(line + 1);
7433        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7434        int vslack = (bottom - top) / 2;
7435        if (vslack > vspace / 4)
7436            vslack = vspace / 4;
7437        final int vs = mScrollY;
7438
7439        if (top < (vs+vslack)) {
7440            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7441        } else if (bottom > (vspace+vs-vslack)) {
7442            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7443        }
7444
7445        // Next: make sure the character is visible on screen:
7446
7447        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7448        final int hs = mScrollX;
7449        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7450        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7451
7452        // line might contain bidirectional text
7453        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7454        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7455
7456        int newStart = start;
7457        if (newStart < lowChar) {
7458            newStart = lowChar;
7459        } else if (newStart > highChar) {
7460            newStart = highChar;
7461        }
7462
7463        if (newStart != start) {
7464            Selection.setSelection((Spannable)mText, newStart);
7465            return true;
7466        }
7467
7468        return false;
7469    }
7470
7471    @Override
7472    public void computeScroll() {
7473        if (mScroller != null) {
7474            if (mScroller.computeScrollOffset()) {
7475                mScrollX = mScroller.getCurrX();
7476                mScrollY = mScroller.getCurrY();
7477                invalidateParentCaches();
7478                postInvalidate();  // So we draw again
7479            }
7480        }
7481    }
7482
7483    private void getInterestingRect(Rect r, int line) {
7484        convertFromViewportToContentCoordinates(r);
7485
7486        // Rectangle can can be expanded on first and last line to take
7487        // padding into account.
7488        // TODO Take left/right padding into account too?
7489        if (line == 0) r.top -= getExtendedPaddingTop();
7490        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7491    }
7492
7493    private void convertFromViewportToContentCoordinates(Rect r) {
7494        final int horizontalOffset = viewportToContentHorizontalOffset();
7495        r.left += horizontalOffset;
7496        r.right += horizontalOffset;
7497
7498        final int verticalOffset = viewportToContentVerticalOffset();
7499        r.top += verticalOffset;
7500        r.bottom += verticalOffset;
7501    }
7502
7503    int viewportToContentHorizontalOffset() {
7504        return getCompoundPaddingLeft() - mScrollX;
7505    }
7506
7507    int viewportToContentVerticalOffset() {
7508        int offset = getExtendedPaddingTop() - mScrollY;
7509        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7510            offset += getVerticalOffset(false);
7511        }
7512        return offset;
7513    }
7514
7515    @Override
7516    public void debug(int depth) {
7517        super.debug(depth);
7518
7519        String output = debugIndent(depth);
7520        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7521                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7522                + "} ";
7523
7524        if (mText != null) {
7525
7526            output += "mText=\"" + mText + "\" ";
7527            if (mLayout != null) {
7528                output += "mLayout width=" + mLayout.getWidth()
7529                        + " height=" + mLayout.getHeight();
7530            }
7531        } else {
7532            output += "mText=NULL";
7533        }
7534        Log.d(VIEW_LOG_TAG, output);
7535    }
7536
7537    /**
7538     * Convenience for {@link Selection#getSelectionStart}.
7539     */
7540    @ViewDebug.ExportedProperty(category = "text")
7541    public int getSelectionStart() {
7542        return Selection.getSelectionStart(getText());
7543    }
7544
7545    /**
7546     * Convenience for {@link Selection#getSelectionEnd}.
7547     */
7548    @ViewDebug.ExportedProperty(category = "text")
7549    public int getSelectionEnd() {
7550        return Selection.getSelectionEnd(getText());
7551    }
7552
7553    /**
7554     * Return true iff there is a selection inside this text view.
7555     */
7556    public boolean hasSelection() {
7557        final int selectionStart = getSelectionStart();
7558        final int selectionEnd = getSelectionEnd();
7559
7560        return selectionStart >= 0 && selectionStart != selectionEnd;
7561    }
7562
7563    String getSelectedText() {
7564        if (hasSelection()) {
7565            return String.valueOf(mText.subSequence(getSelectionStart(), getSelectionEnd()));
7566        }
7567        return null;
7568    }
7569
7570    /**
7571     * Sets the properties of this field (lines, horizontally scrolling,
7572     * transformation method) to be for a single-line input.
7573     *
7574     * @attr ref android.R.styleable#TextView_singleLine
7575     */
7576    public void setSingleLine() {
7577        setSingleLine(true);
7578    }
7579
7580    /**
7581     * Sets the properties of this field to transform input to ALL CAPS
7582     * display. This may use a "small caps" formatting if available.
7583     * This setting will be ignored if this field is editable or selectable.
7584     *
7585     * This call replaces the current transformation method. Disabling this
7586     * will not necessarily restore the previous behavior from before this
7587     * was enabled.
7588     *
7589     * @see #setTransformationMethod(TransformationMethod)
7590     * @attr ref android.R.styleable#TextView_textAllCaps
7591     */
7592    public void setAllCaps(boolean allCaps) {
7593        if (allCaps) {
7594            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7595        } else {
7596            setTransformationMethod(null);
7597        }
7598    }
7599
7600    /**
7601     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7602     * transformation method) to be for a single-line input; if false, restores these to the default
7603     * conditions.
7604     *
7605     * Note that the default conditions are not necessarily those that were in effect prior this
7606     * method, and you may want to reset these properties to your custom values.
7607     *
7608     * @attr ref android.R.styleable#TextView_singleLine
7609     */
7610    @android.view.RemotableViewMethod
7611    public void setSingleLine(boolean singleLine) {
7612        // Could be used, but may break backward compatibility.
7613        // if (mSingleLine == singleLine) return;
7614        setInputTypeSingleLine(singleLine);
7615        applySingleLine(singleLine, true, true);
7616    }
7617
7618    /**
7619     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7620     * @param singleLine
7621     */
7622    private void setInputTypeSingleLine(boolean singleLine) {
7623        if (mEditor != null &&
7624                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7625            if (singleLine) {
7626                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7627            } else {
7628                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7629            }
7630        }
7631    }
7632
7633    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7634            boolean changeMaxLines) {
7635        mSingleLine = singleLine;
7636        if (singleLine) {
7637            setLines(1);
7638            setHorizontallyScrolling(true);
7639            if (applyTransformation) {
7640                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7641            }
7642        } else {
7643            if (changeMaxLines) {
7644                setMaxLines(Integer.MAX_VALUE);
7645            }
7646            setHorizontallyScrolling(false);
7647            if (applyTransformation) {
7648                setTransformationMethod(null);
7649            }
7650        }
7651    }
7652
7653    /**
7654     * Causes words in the text that are longer than the view is wide
7655     * to be ellipsized instead of broken in the middle.  You may also
7656     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7657     * to constrain the text to a single line.  Use <code>null</code>
7658     * to turn off ellipsizing.
7659     *
7660     * If {@link #setMaxLines} has been used to set two or more lines,
7661     * only {@link android.text.TextUtils.TruncateAt#END} and
7662     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7663     * (other ellipsizing types will not do anything).
7664     *
7665     * @attr ref android.R.styleable#TextView_ellipsize
7666     */
7667    public void setEllipsize(TextUtils.TruncateAt where) {
7668        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7669        if (mEllipsize != where) {
7670            mEllipsize = where;
7671
7672            if (mLayout != null) {
7673                nullLayouts();
7674                requestLayout();
7675                invalidate();
7676            }
7677        }
7678    }
7679
7680    /**
7681     * Sets how many times to repeat the marquee animation. Only applied if the
7682     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7683     *
7684     * @see #getMarqueeRepeatLimit()
7685     *
7686     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7687     */
7688    public void setMarqueeRepeatLimit(int marqueeLimit) {
7689        mMarqueeRepeatLimit = marqueeLimit;
7690    }
7691
7692    /**
7693     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7694     * TextView has marquee enabled.
7695     *
7696     * @return the number of times the marquee animation is repeated. -1 if the animation
7697     * repeats indefinitely
7698     *
7699     * @see #setMarqueeRepeatLimit(int)
7700     *
7701     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7702     */
7703    public int getMarqueeRepeatLimit() {
7704        return mMarqueeRepeatLimit;
7705    }
7706
7707    /**
7708     * Returns where, if anywhere, words that are longer than the view
7709     * is wide should be ellipsized.
7710     */
7711    @ViewDebug.ExportedProperty
7712    public TextUtils.TruncateAt getEllipsize() {
7713        return mEllipsize;
7714    }
7715
7716    /**
7717     * Set the TextView so that when it takes focus, all the text is
7718     * selected.
7719     *
7720     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7721     */
7722    @android.view.RemotableViewMethod
7723    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7724        createEditorIfNeeded();
7725        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7726
7727        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7728            setText(mText, BufferType.SPANNABLE);
7729        }
7730    }
7731
7732    /**
7733     * Set whether the cursor is visible. The default is true. Note that this property only
7734     * makes sense for editable TextView.
7735     *
7736     * @see #isCursorVisible()
7737     *
7738     * @attr ref android.R.styleable#TextView_cursorVisible
7739     */
7740    @android.view.RemotableViewMethod
7741    public void setCursorVisible(boolean visible) {
7742        if (visible && mEditor == null) return; // visible is the default value with no edit data
7743        createEditorIfNeeded();
7744        if (mEditor.mCursorVisible != visible) {
7745            mEditor.mCursorVisible = visible;
7746            invalidate();
7747
7748            mEditor.makeBlink();
7749
7750            // InsertionPointCursorController depends on mCursorVisible
7751            mEditor.prepareCursorControllers();
7752        }
7753    }
7754
7755    /**
7756     * @return whether or not the cursor is visible (assuming this TextView is editable)
7757     *
7758     * @see #setCursorVisible(boolean)
7759     *
7760     * @attr ref android.R.styleable#TextView_cursorVisible
7761     */
7762    public boolean isCursorVisible() {
7763        // true is the default value
7764        return mEditor == null ? true : mEditor.mCursorVisible;
7765    }
7766
7767    private boolean canMarquee() {
7768        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7769        return width > 0 && (mLayout.getLineWidth(0) > width ||
7770                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7771                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7772    }
7773
7774    private void startMarquee() {
7775        // Do not ellipsize EditText
7776        if (getKeyListener() != null) return;
7777
7778        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7779            return;
7780        }
7781
7782        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7783                getLineCount() == 1 && canMarquee()) {
7784
7785            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7786                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7787                final Layout tmp = mLayout;
7788                mLayout = mSavedMarqueeModeLayout;
7789                mSavedMarqueeModeLayout = tmp;
7790                setHorizontalFadingEdgeEnabled(true);
7791                requestLayout();
7792                invalidate();
7793            }
7794
7795            if (mMarquee == null) mMarquee = new Marquee(this);
7796            mMarquee.start(mMarqueeRepeatLimit);
7797        }
7798    }
7799
7800    private void stopMarquee() {
7801        if (mMarquee != null && !mMarquee.isStopped()) {
7802            mMarquee.stop();
7803        }
7804
7805        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7806            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7807            final Layout tmp = mSavedMarqueeModeLayout;
7808            mSavedMarqueeModeLayout = mLayout;
7809            mLayout = tmp;
7810            setHorizontalFadingEdgeEnabled(false);
7811            requestLayout();
7812            invalidate();
7813        }
7814    }
7815
7816    private void startStopMarquee(boolean start) {
7817        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7818            if (start) {
7819                startMarquee();
7820            } else {
7821                stopMarquee();
7822            }
7823        }
7824    }
7825
7826    /**
7827     * This method is called when the text is changed, in case any subclasses
7828     * would like to know.
7829     *
7830     * Within <code>text</code>, the <code>lengthAfter</code> characters
7831     * beginning at <code>start</code> have just replaced old text that had
7832     * length <code>lengthBefore</code>. It is an error to attempt to make
7833     * changes to <code>text</code> from this callback.
7834     *
7835     * @param text The text the TextView is displaying
7836     * @param start The offset of the start of the range of the text that was
7837     * modified
7838     * @param lengthBefore The length of the former text that has been replaced
7839     * @param lengthAfter The length of the replacement modified text
7840     */
7841    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7842        // intentionally empty, template pattern method can be overridden by subclasses
7843    }
7844
7845    /**
7846     * This method is called when the selection has changed, in case any
7847     * subclasses would like to know.
7848     *
7849     * @param selStart The new selection start location.
7850     * @param selEnd The new selection end location.
7851     */
7852    protected void onSelectionChanged(int selStart, int selEnd) {
7853        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7854    }
7855
7856    /**
7857     * Adds a TextWatcher to the list of those whose methods are called
7858     * whenever this TextView's text changes.
7859     * <p>
7860     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7861     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7862     * if there are any text changed listeners forces the buffer type to
7863     * Editable if it would not otherwise be and does call this method.
7864     */
7865    public void addTextChangedListener(TextWatcher watcher) {
7866        if (mListeners == null) {
7867            mListeners = new ArrayList<TextWatcher>();
7868        }
7869
7870        mListeners.add(watcher);
7871    }
7872
7873    /**
7874     * Removes the specified TextWatcher from the list of those whose
7875     * methods are called
7876     * whenever this TextView's text changes.
7877     */
7878    public void removeTextChangedListener(TextWatcher watcher) {
7879        if (mListeners != null) {
7880            int i = mListeners.indexOf(watcher);
7881
7882            if (i >= 0) {
7883                mListeners.remove(i);
7884            }
7885        }
7886    }
7887
7888    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7889        if (mListeners != null) {
7890            final ArrayList<TextWatcher> list = mListeners;
7891            final int count = list.size();
7892            for (int i = 0; i < count; i++) {
7893                list.get(i).beforeTextChanged(text, start, before, after);
7894            }
7895        }
7896
7897        // The spans that are inside or intersect the modified region no longer make sense
7898        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
7899        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
7900    }
7901
7902    // Removes all spans that are inside or actually overlap the start..end range
7903    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
7904        if (!(mText instanceof Editable)) return;
7905        Editable text = (Editable) mText;
7906
7907        T[] spans = text.getSpans(start, end, type);
7908        final int length = spans.length;
7909        for (int i = 0; i < length; i++) {
7910            final int spanStart = text.getSpanStart(spans[i]);
7911            final int spanEnd = text.getSpanEnd(spans[i]);
7912            if (spanEnd == start || spanStart == end) break;
7913            text.removeSpan(spans[i]);
7914        }
7915    }
7916
7917    void removeAdjacentSuggestionSpans(final int pos) {
7918        if (!(mText instanceof Editable)) return;
7919        final Editable text = (Editable) mText;
7920
7921        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
7922        final int length = spans.length;
7923        for (int i = 0; i < length; i++) {
7924            final int spanStart = text.getSpanStart(spans[i]);
7925            final int spanEnd = text.getSpanEnd(spans[i]);
7926            if (spanEnd == pos || spanStart == pos) {
7927                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
7928                    text.removeSpan(spans[i]);
7929                }
7930            }
7931        }
7932    }
7933
7934    /**
7935     * Not private so it can be called from an inner class without going
7936     * through a thunk.
7937     */
7938    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7939        if (mListeners != null) {
7940            final ArrayList<TextWatcher> list = mListeners;
7941            final int count = list.size();
7942            for (int i = 0; i < count; i++) {
7943                list.get(i).onTextChanged(text, start, before, after);
7944            }
7945        }
7946
7947        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7948    }
7949
7950    /**
7951     * Not private so it can be called from an inner class without going
7952     * through a thunk.
7953     */
7954    void sendAfterTextChanged(Editable text) {
7955        if (mListeners != null) {
7956            final ArrayList<TextWatcher> list = mListeners;
7957            final int count = list.size();
7958            for (int i = 0; i < count; i++) {
7959                list.get(i).afterTextChanged(text);
7960            }
7961        }
7962        hideErrorIfUnchanged();
7963    }
7964
7965    void updateAfterEdit() {
7966        invalidate();
7967        int curs = getSelectionStart();
7968
7969        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7970            registerForPreDraw();
7971        }
7972
7973        checkForResize();
7974
7975        if (curs >= 0) {
7976            mHighlightPathBogus = true;
7977            if (mEditor != null) mEditor.makeBlink();
7978            bringPointIntoView(curs);
7979        }
7980    }
7981
7982    /**
7983     * Not private so it can be called from an inner class without going
7984     * through a thunk.
7985     */
7986    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7987        sLastCutCopyOrTextChangedTime = 0;
7988
7989        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7990        if (ims == null || ims.mBatchEditNesting == 0) {
7991            updateAfterEdit();
7992        }
7993        if (ims != null) {
7994            ims.mContentChanged = true;
7995            if (ims.mChangedStart < 0) {
7996                ims.mChangedStart = start;
7997                ims.mChangedEnd = start+before;
7998            } else {
7999                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8000                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8001            }
8002            ims.mChangedDelta += after-before;
8003        }
8004        resetErrorChangedFlag();
8005        sendOnTextChanged(buffer, start, before, after);
8006        onTextChanged(buffer, start, before, after);
8007    }
8008
8009    /**
8010     * Not private so it can be called from an inner class without going
8011     * through a thunk.
8012     */
8013    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8014        // XXX Make the start and end move together if this ends up
8015        // spending too much time invalidating.
8016
8017        boolean selChanged = false;
8018        int newSelStart=-1, newSelEnd=-1;
8019
8020        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8021
8022        if (what == Selection.SELECTION_END) {
8023            selChanged = true;
8024            newSelEnd = newStart;
8025
8026            if (oldStart >= 0 || newStart >= 0) {
8027                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8028                checkForResize();
8029                registerForPreDraw();
8030                if (mEditor != null) mEditor.makeBlink();
8031            }
8032        }
8033
8034        if (what == Selection.SELECTION_START) {
8035            selChanged = true;
8036            newSelStart = newStart;
8037
8038            if (oldStart >= 0 || newStart >= 0) {
8039                int end = Selection.getSelectionEnd(buf);
8040                invalidateCursor(end, oldStart, newStart);
8041            }
8042        }
8043
8044        if (selChanged) {
8045            mHighlightPathBogus = true;
8046            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8047
8048            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8049                if (newSelStart < 0) {
8050                    newSelStart = Selection.getSelectionStart(buf);
8051                }
8052                if (newSelEnd < 0) {
8053                    newSelEnd = Selection.getSelectionEnd(buf);
8054                }
8055                onSelectionChanged(newSelStart, newSelEnd);
8056            }
8057        }
8058
8059        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8060                what instanceof CharacterStyle) {
8061            if (ims == null || ims.mBatchEditNesting == 0) {
8062                invalidate();
8063                mHighlightPathBogus = true;
8064                checkForResize();
8065            } else {
8066                ims.mContentChanged = true;
8067            }
8068            if (mEditor != null) {
8069                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8070                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8071            }
8072        }
8073
8074        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8075            mHighlightPathBogus = true;
8076            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8077                ims.mSelectionModeChanged = true;
8078            }
8079
8080            if (Selection.getSelectionStart(buf) >= 0) {
8081                if (ims == null || ims.mBatchEditNesting == 0) {
8082                    invalidateCursor();
8083                } else {
8084                    ims.mCursorChanged = true;
8085                }
8086            }
8087        }
8088
8089        if (what instanceof ParcelableSpan) {
8090            // If this is a span that can be sent to a remote process,
8091            // the current extract editor would be interested in it.
8092            if (ims != null && ims.mExtractedTextRequest != null) {
8093                if (ims.mBatchEditNesting != 0) {
8094                    if (oldStart >= 0) {
8095                        if (ims.mChangedStart > oldStart) {
8096                            ims.mChangedStart = oldStart;
8097                        }
8098                        if (ims.mChangedStart > oldEnd) {
8099                            ims.mChangedStart = oldEnd;
8100                        }
8101                    }
8102                    if (newStart >= 0) {
8103                        if (ims.mChangedStart > newStart) {
8104                            ims.mChangedStart = newStart;
8105                        }
8106                        if (ims.mChangedStart > newEnd) {
8107                            ims.mChangedStart = newEnd;
8108                        }
8109                    }
8110                } else {
8111                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8112                            + oldStart + "-" + oldEnd + ","
8113                            + newStart + "-" + newEnd + " " + what);
8114                    ims.mContentChanged = true;
8115                }
8116            }
8117        }
8118
8119        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8120                what instanceof SpellCheckSpan) {
8121            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8122        }
8123    }
8124
8125    /**
8126     * @hide
8127     */
8128    @Override
8129    public void dispatchFinishTemporaryDetach() {
8130        mDispatchTemporaryDetach = true;
8131        super.dispatchFinishTemporaryDetach();
8132        mDispatchTemporaryDetach = false;
8133    }
8134
8135    @Override
8136    public void onStartTemporaryDetach() {
8137        super.onStartTemporaryDetach();
8138        // Only track when onStartTemporaryDetach() is called directly,
8139        // usually because this instance is an editable field in a list
8140        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8141
8142        // Tell the editor that we are temporarily detached. It can use this to preserve
8143        // selection state as needed.
8144        if (mEditor != null) mEditor.mTemporaryDetach = true;
8145    }
8146
8147    @Override
8148    public void onFinishTemporaryDetach() {
8149        super.onFinishTemporaryDetach();
8150        // Only track when onStartTemporaryDetach() is called directly,
8151        // usually because this instance is an editable field in a list
8152        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8153        if (mEditor != null) mEditor.mTemporaryDetach = false;
8154    }
8155
8156    @Override
8157    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8158        if (mTemporaryDetach) {
8159            // If we are temporarily in the detach state, then do nothing.
8160            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8161            return;
8162        }
8163
8164        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8165
8166        if (focused) {
8167            if (mText instanceof Spannable) {
8168                Spannable sp = (Spannable) mText;
8169                MetaKeyKeyListener.resetMetaState(sp);
8170            }
8171        }
8172
8173        startStopMarquee(focused);
8174
8175        if (mTransformation != null) {
8176            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8177        }
8178
8179        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8180    }
8181
8182    @Override
8183    public void onWindowFocusChanged(boolean hasWindowFocus) {
8184        super.onWindowFocusChanged(hasWindowFocus);
8185
8186        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8187
8188        startStopMarquee(hasWindowFocus);
8189    }
8190
8191    @Override
8192    protected void onVisibilityChanged(View changedView, int visibility) {
8193        super.onVisibilityChanged(changedView, visibility);
8194        if (mEditor != null && visibility != VISIBLE) {
8195            mEditor.hideControllers();
8196            stopTextActionMode();
8197        }
8198    }
8199
8200    /**
8201     * Use {@link BaseInputConnection#removeComposingSpans
8202     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8203     * state from this text view.
8204     */
8205    public void clearComposingText() {
8206        if (mText instanceof Spannable) {
8207            BaseInputConnection.removeComposingSpans((Spannable)mText);
8208        }
8209    }
8210
8211    @Override
8212    public void setSelected(boolean selected) {
8213        boolean wasSelected = isSelected();
8214
8215        super.setSelected(selected);
8216
8217        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8218            if (selected) {
8219                startMarquee();
8220            } else {
8221                stopMarquee();
8222            }
8223        }
8224    }
8225
8226    @Override
8227    public boolean onTouchEvent(MotionEvent event) {
8228        final int action = event.getActionMasked();
8229
8230        if (mEditor != null && action == MotionEvent.ACTION_DOWN) {
8231            // Detect double tap and inform the Editor.
8232            if (mFirstTouch && (SystemClock.uptimeMillis() - mLastTouchUpTime) <=
8233                    ViewConfiguration.getDoubleTapTimeout()) {
8234                mEditor.mDoubleTap = true;
8235                mFirstTouch = false;
8236            } else {
8237                mEditor.mDoubleTap = false;
8238                mFirstTouch = true;
8239            }
8240        }
8241
8242        if (action == MotionEvent.ACTION_UP) {
8243            mLastTouchUpTime = SystemClock.uptimeMillis();
8244        }
8245
8246        if (mEditor != null) {
8247            mEditor.onTouchEvent(event);
8248
8249            if (mEditor.mSelectionModifierCursorController != null &&
8250                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8251                return true;
8252            }
8253        }
8254
8255        final boolean superResult = super.onTouchEvent(event);
8256
8257        /*
8258         * Don't handle the release after a long press, because it will move the selection away from
8259         * whatever the menu action was trying to affect. If the long press should have triggered an
8260         * insertion action mode, we can now actually show it.
8261         */
8262        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8263            mEditor.mDiscardNextActionUp = false;
8264
8265            if (mEditor.mIsInsertionActionModeStartPending) {
8266                mEditor.startInsertionActionMode();
8267                mEditor.mIsInsertionActionModeStartPending = false;
8268            }
8269            return superResult;
8270        }
8271
8272        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8273                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8274
8275         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8276                && mText instanceof Spannable && mLayout != null) {
8277            boolean handled = false;
8278
8279            if (mMovement != null) {
8280                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8281            }
8282
8283            final boolean textIsSelectable = isTextSelectable();
8284            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8285                // The LinkMovementMethod which should handle taps on links has not been installed
8286                // on non editable text that support text selection.
8287                // We reproduce its behavior here to open links for these.
8288                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8289                        getSelectionEnd(), ClickableSpan.class);
8290
8291                if (links.length > 0) {
8292                    links[0].onClick(this);
8293                    handled = true;
8294                }
8295            }
8296
8297            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8298                // Show the IME, except when selecting in read-only text.
8299                final InputMethodManager imm = InputMethodManager.peekInstance();
8300                viewClicked(imm);
8301                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8302                    handled |= imm != null && imm.showSoftInput(this, 0);
8303                }
8304
8305                // The above condition ensures that the mEditor is not null
8306                mEditor.onTouchUpEvent(event);
8307
8308                handled = true;
8309            }
8310
8311            if (handled) {
8312                return true;
8313            }
8314        }
8315
8316        return superResult;
8317    }
8318
8319    @Override
8320    public boolean onGenericMotionEvent(MotionEvent event) {
8321        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8322            try {
8323                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8324                    return true;
8325                }
8326            } catch (AbstractMethodError ex) {
8327                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8328                // Ignore its absence in case third party applications implemented the
8329                // interface directly.
8330            }
8331        }
8332        return super.onGenericMotionEvent(event);
8333    }
8334
8335    /**
8336     * @return True iff this TextView contains a text that can be edited, or if this is
8337     * a selectable TextView.
8338     */
8339    boolean isTextEditable() {
8340        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8341    }
8342
8343    /**
8344     * Returns true, only while processing a touch gesture, if the initial
8345     * touch down event caused focus to move to the text view and as a result
8346     * its selection changed.  Only valid while processing the touch gesture
8347     * of interest, in an editable text view.
8348     */
8349    public boolean didTouchFocusSelect() {
8350        return mEditor != null && mEditor.mTouchFocusSelected;
8351    }
8352
8353    @Override
8354    public void cancelLongPress() {
8355        super.cancelLongPress();
8356        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8357    }
8358
8359    @Override
8360    public boolean onTrackballEvent(MotionEvent event) {
8361        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8362            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8363                return true;
8364            }
8365        }
8366
8367        return super.onTrackballEvent(event);
8368    }
8369
8370    public void setScroller(Scroller s) {
8371        mScroller = s;
8372    }
8373
8374    @Override
8375    protected float getLeftFadingEdgeStrength() {
8376        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8377                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8378            if (mMarquee != null && !mMarquee.isStopped()) {
8379                final Marquee marquee = mMarquee;
8380                if (marquee.shouldDrawLeftFade()) {
8381                    final float scroll = marquee.getScroll();
8382                    return scroll / getHorizontalFadingEdgeLength();
8383                } else {
8384                    return 0.0f;
8385                }
8386            } else if (getLineCount() == 1) {
8387                final int layoutDirection = getLayoutDirection();
8388                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8389                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8390                    case Gravity.LEFT:
8391                        return 0.0f;
8392                    case Gravity.RIGHT:
8393                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8394                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8395                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8396                    case Gravity.CENTER_HORIZONTAL:
8397                    case Gravity.FILL_HORIZONTAL:
8398                        final int textDirection = mLayout.getParagraphDirection(0);
8399                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8400                            return 0.0f;
8401                        } else {
8402                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8403                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8404                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8405                        }
8406                }
8407            }
8408        }
8409        return super.getLeftFadingEdgeStrength();
8410    }
8411
8412    @Override
8413    protected float getRightFadingEdgeStrength() {
8414        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8415                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8416            if (mMarquee != null && !mMarquee.isStopped()) {
8417                final Marquee marquee = mMarquee;
8418                final float maxFadeScroll = marquee.getMaxFadeScroll();
8419                final float scroll = marquee.getScroll();
8420                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8421            } else if (getLineCount() == 1) {
8422                final int layoutDirection = getLayoutDirection();
8423                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8424                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8425                    case Gravity.LEFT:
8426                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8427                                getCompoundPaddingRight();
8428                        final float lineWidth = mLayout.getLineWidth(0);
8429                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8430                    case Gravity.RIGHT:
8431                        return 0.0f;
8432                    case Gravity.CENTER_HORIZONTAL:
8433                    case Gravity.FILL_HORIZONTAL:
8434                        final int textDirection = mLayout.getParagraphDirection(0);
8435                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8436                            return 0.0f;
8437                        } else {
8438                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8439                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8440                                getHorizontalFadingEdgeLength();
8441                        }
8442                }
8443            }
8444        }
8445        return super.getRightFadingEdgeStrength();
8446    }
8447
8448    @Override
8449    protected int computeHorizontalScrollRange() {
8450        if (mLayout != null) {
8451            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8452                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8453        }
8454
8455        return super.computeHorizontalScrollRange();
8456    }
8457
8458    @Override
8459    protected int computeVerticalScrollRange() {
8460        if (mLayout != null)
8461            return mLayout.getHeight();
8462
8463        return super.computeVerticalScrollRange();
8464    }
8465
8466    @Override
8467    protected int computeVerticalScrollExtent() {
8468        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8469    }
8470
8471    @Override
8472    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8473        super.findViewsWithText(outViews, searched, flags);
8474        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8475                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8476            String searchedLowerCase = searched.toString().toLowerCase();
8477            String textLowerCase = mText.toString().toLowerCase();
8478            if (textLowerCase.contains(searchedLowerCase)) {
8479                outViews.add(this);
8480            }
8481        }
8482    }
8483
8484    public enum BufferType {
8485        NORMAL, SPANNABLE, EDITABLE,
8486    }
8487
8488    /**
8489     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8490     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8491     * if TextView_textColor was not set directly.
8492     *
8493     * @removed
8494     */
8495    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8496        if (attrs == null) {
8497            // Preserve behavior prior to removal of this API.
8498            throw new NullPointerException();
8499        }
8500
8501        // It's not safe to use this method from apps. The parameter 'attrs'
8502        // must have been obtained using the TextView filter array which is not
8503        // available to the SDK. As such, we grab a default TypedArray with the
8504        // right filter instead here.
8505        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8506        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8507        if (colors == null) {
8508            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8509            if (ap != 0) {
8510                final TypedArray appearance = context.obtainStyledAttributes(
8511                        ap, R.styleable.TextAppearance);
8512                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8513                appearance.recycle();
8514            }
8515        }
8516        a.recycle();
8517
8518        return colors;
8519    }
8520
8521    /**
8522     * Returns the default color from the TextView_textColor attribute from the
8523     * AttributeSet, if set, or the default color from the
8524     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8525     * TextView_textColor was not set directly.
8526     *
8527     * @removed
8528     */
8529    public static int getTextColor(Context context, TypedArray attrs, int def) {
8530        final ColorStateList colors = getTextColors(context, attrs);
8531        if (colors == null) {
8532            return def;
8533        } else {
8534            return colors.getDefaultColor();
8535        }
8536    }
8537
8538    @Override
8539    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8540        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8541            // Handle Ctrl-only shortcuts.
8542            switch (keyCode) {
8543            case KeyEvent.KEYCODE_A:
8544                if (canSelectText()) {
8545                    return onTextContextMenuItem(ID_SELECT_ALL);
8546                }
8547                break;
8548            case KeyEvent.KEYCODE_Z:
8549                if (canUndo()) {
8550                    return onTextContextMenuItem(ID_UNDO);
8551                }
8552                break;
8553            case KeyEvent.KEYCODE_X:
8554                if (canCut()) {
8555                    return onTextContextMenuItem(ID_CUT);
8556                }
8557                break;
8558            case KeyEvent.KEYCODE_C:
8559                if (canCopy()) {
8560                    return onTextContextMenuItem(ID_COPY);
8561                }
8562                break;
8563            case KeyEvent.KEYCODE_V:
8564                if (canPaste()) {
8565                    return onTextContextMenuItem(ID_PASTE);
8566                }
8567                break;
8568            }
8569        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8570            // Handle Ctrl-Shift shortcuts.
8571            switch (keyCode) {
8572                case KeyEvent.KEYCODE_Z:
8573                    if (canRedo()) {
8574                        return onTextContextMenuItem(ID_REDO);
8575                    }
8576                    break;
8577                case KeyEvent.KEYCODE_V:
8578                    if (canPaste()) {
8579                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8580                    }
8581            }
8582        }
8583        return super.onKeyShortcut(keyCode, event);
8584    }
8585
8586    /**
8587     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8588     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8589     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8590     * sufficient.
8591     */
8592    boolean canSelectText() {
8593        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8594    }
8595
8596    /**
8597     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8598     * The text must be spannable and the movement method must allow for arbitary selection.
8599     *
8600     * See also {@link #canSelectText()}.
8601     */
8602    boolean textCanBeSelected() {
8603        // prepareCursorController() relies on this method.
8604        // If you change this condition, make sure prepareCursorController is called anywhere
8605        // the value of this condition might be changed.
8606        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8607        return isTextEditable() ||
8608                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8609    }
8610
8611    private Locale getTextServicesLocale(boolean allowNullLocale) {
8612        // Start fetching the text services locale asynchronously.
8613        updateTextServicesLocaleAsync();
8614        // If !allowNullLocale and there is no cached text services locale, just return the default
8615        // locale.
8616        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8617                : mCurrentSpellCheckerLocaleCache;
8618    }
8619
8620    /**
8621     * This is a temporary method. Future versions may support multi-locale text.
8622     * Caveat: This method may not return the latest text services locale, but this should be
8623     * acceptable and it's more important to make this method asynchronous.
8624     *
8625     * @return The locale that should be used for a word iterator
8626     * in this TextView, based on the current spell checker settings,
8627     * the current IME's locale, or the system default locale.
8628     * Please note that a word iterator in this TextView is different from another word iterator
8629     * used by SpellChecker.java of TextView. This method should be used for the former.
8630     * @hide
8631     */
8632    // TODO: Support multi-locale
8633    // TODO: Update the text services locale immediately after the keyboard locale is switched
8634    // by catching intent of keyboard switch event
8635    public Locale getTextServicesLocale() {
8636        return getTextServicesLocale(false /* allowNullLocale */);
8637    }
8638
8639    /**
8640     * @return true if this TextView is specialized for showing and interacting with the extracted
8641     * text in a full-screen input method.
8642     * @hide
8643     */
8644    public boolean isInExtractedMode() {
8645        return false;
8646    }
8647
8648    /**
8649     * This is a temporary method. Future versions may support multi-locale text.
8650     * Caveat: This method may not return the latest spell checker locale, but this should be
8651     * acceptable and it's more important to make this method asynchronous.
8652     *
8653     * @return The locale that should be used for a spell checker in this TextView,
8654     * based on the current spell checker settings, the current IME's locale, or the system default
8655     * locale.
8656     * @hide
8657     */
8658    public Locale getSpellCheckerLocale() {
8659        return getTextServicesLocale(true /* allowNullLocale */);
8660    }
8661
8662    private void updateTextServicesLocaleAsync() {
8663        // AsyncTask.execute() uses a serial executor which means we don't have
8664        // to lock around updateTextServicesLocaleLocked() to prevent it from
8665        // being executed n times in parallel.
8666        AsyncTask.execute(new Runnable() {
8667            @Override
8668            public void run() {
8669                updateTextServicesLocaleLocked();
8670            }
8671        });
8672    }
8673
8674    private void updateTextServicesLocaleLocked() {
8675        final TextServicesManager textServicesManager = (TextServicesManager)
8676                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8677        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8678        final Locale locale;
8679        if (subtype != null) {
8680            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
8681        } else {
8682            locale = null;
8683        }
8684        mCurrentSpellCheckerLocaleCache = locale;
8685    }
8686
8687    void onLocaleChanged() {
8688        // Will be re-created on demand in getWordIterator with the proper new locale
8689        mEditor.mWordIterator = null;
8690    }
8691
8692    /**
8693     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8694     * Made available to achieve a consistent behavior.
8695     * @hide
8696     */
8697    public WordIterator getWordIterator() {
8698        if (mEditor != null) {
8699            return mEditor.getWordIterator();
8700        } else {
8701            return null;
8702        }
8703    }
8704
8705    /** @hide */
8706    @Override
8707    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8708        super.onPopulateAccessibilityEventInternal(event);
8709
8710        final boolean isPassword = hasPasswordTransformationMethod();
8711        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8712            final CharSequence text = getTextForAccessibility();
8713            if (!TextUtils.isEmpty(text)) {
8714                event.getText().add(text);
8715            }
8716        }
8717    }
8718
8719    /**
8720     * @return true if the user has explicitly allowed accessibility services
8721     * to speak passwords.
8722     */
8723    private boolean shouldSpeakPasswordsForAccessibility() {
8724        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8725                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8726                UserHandle.USER_CURRENT_OR_SELF) == 1);
8727    }
8728
8729    @Override
8730    public CharSequence getAccessibilityClassName() {
8731        return TextView.class.getName();
8732    }
8733
8734    @Override
8735    public void onProvideStructure(ViewStructure structure) {
8736        super.onProvideStructure(structure);
8737        final boolean isPassword = hasPasswordTransformationMethod()
8738                || isPasswordInputType(getInputType());
8739        if (!isPassword) {
8740            structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8741
8742            // Extract style information that applies to the TextView as a whole.
8743            int style = 0;
8744            int typefaceStyle = getTypefaceStyle();
8745            if ((typefaceStyle & Typeface.BOLD) != 0) {
8746                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
8747            }
8748            if ((typefaceStyle & Typeface.ITALIC) != 0) {
8749                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
8750            }
8751
8752            // Global styles can also be set via TextView.setPaintFlags().
8753            int paintFlags = mTextPaint.getFlags();
8754            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
8755                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
8756            }
8757            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
8758                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
8759            }
8760            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
8761                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
8762            }
8763
8764            // TextView does not have its own text background color. A background is either part
8765            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
8766            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
8767                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
8768        }
8769        structure.setHint(getHint());
8770    }
8771
8772    /** @hide */
8773    @Override
8774    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
8775        super.onInitializeAccessibilityEventInternal(event);
8776
8777        final boolean isPassword = hasPasswordTransformationMethod();
8778        event.setPassword(isPassword);
8779
8780        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
8781            event.setFromIndex(Selection.getSelectionStart(mText));
8782            event.setToIndex(Selection.getSelectionEnd(mText));
8783            event.setItemCount(mText.length());
8784        }
8785    }
8786
8787    /** @hide */
8788    @Override
8789    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
8790        super.onInitializeAccessibilityNodeInfoInternal(info);
8791
8792        final boolean isPassword = hasPasswordTransformationMethod();
8793        info.setPassword(isPassword);
8794
8795        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8796            info.setText(getTextForAccessibility());
8797        }
8798
8799        if (mBufferType == BufferType.EDITABLE) {
8800            info.setEditable(true);
8801        }
8802
8803        if (mEditor != null) {
8804            info.setInputType(mEditor.mInputType);
8805
8806            if (mEditor.mError != null) {
8807                info.setContentInvalid(true);
8808                info.setError(mEditor.mError);
8809            }
8810        }
8811
8812        if (!TextUtils.isEmpty(mText)) {
8813            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
8814            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
8815            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8816                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8817                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8818                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8819                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8820        }
8821
8822        if (isFocused()) {
8823            if (canSelectText()) {
8824                info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8825            }
8826            if (canCopy()) {
8827                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8828            }
8829            if (canPaste()) {
8830                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8831            }
8832            if (canCut()) {
8833                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8834            }
8835        }
8836
8837        // Check for known input filter types.
8838        final int numFilters = mFilters.length;
8839        for (int i = 0; i < numFilters; i++) {
8840            final InputFilter filter = mFilters[i];
8841            if (filter instanceof InputFilter.LengthFilter) {
8842                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
8843            }
8844        }
8845
8846        if (!isSingleLine()) {
8847            info.setMultiLine(true);
8848        }
8849    }
8850
8851    /**
8852     * Performs an accessibility action after it has been offered to the
8853     * delegate.
8854     *
8855     * @hide
8856     */
8857    @Override
8858    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
8859        switch (action) {
8860            case AccessibilityNodeInfo.ACTION_CLICK: {
8861                boolean handled = false;
8862
8863                // Simulate View.onTouchEvent for an ACTION_UP event.
8864                if (isClickable() || isLongClickable()) {
8865                    if (isFocusable() && !isFocused()) {
8866                        requestFocus();
8867                    }
8868
8869                    performClick();
8870                    handled = true;
8871                }
8872
8873                // Simulate TextView.onTouchEvent for an ACTION_UP event.
8874                if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8875                        && mText instanceof Spannable && mLayout != null
8876                        && (isTextEditable() || isTextSelectable()) && isFocused()) {
8877                    // Show the IME, except when selecting in read-only text.
8878                    final InputMethodManager imm = InputMethodManager.peekInstance();
8879                    viewClicked(imm);
8880                    if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
8881                        handled |= imm.showSoftInput(this, 0);
8882                    }
8883                }
8884
8885                return handled;
8886            }
8887            case AccessibilityNodeInfo.ACTION_COPY: {
8888                if (isFocused() && canCopy()) {
8889                    if (onTextContextMenuItem(ID_COPY)) {
8890                        return true;
8891                    }
8892                }
8893            } return false;
8894            case AccessibilityNodeInfo.ACTION_PASTE: {
8895                if (isFocused() && canPaste()) {
8896                    if (onTextContextMenuItem(ID_PASTE)) {
8897                        return true;
8898                    }
8899                }
8900            } return false;
8901            case AccessibilityNodeInfo.ACTION_CUT: {
8902                if (isFocused() && canCut()) {
8903                    if (onTextContextMenuItem(ID_CUT)) {
8904                        return true;
8905                    }
8906                }
8907            } return false;
8908            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
8909                if (isFocused() && canSelectText()) {
8910                    ensureIterableTextForAccessibilitySelectable();
8911                    CharSequence text = getIterableTextForAccessibility();
8912                    if (text == null) {
8913                        return false;
8914                    }
8915                    final int start = (arguments != null) ? arguments.getInt(
8916                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
8917                    final int end = (arguments != null) ? arguments.getInt(
8918                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
8919                    if ((getSelectionStart() != start || getSelectionEnd() != end)) {
8920                        // No arguments clears the selection.
8921                        if (start == end && end == -1) {
8922                            Selection.removeSelection((Spannable) text);
8923                            return true;
8924                        }
8925                        if (start >= 0 && start <= end && end <= text.length()) {
8926                            Selection.setSelection((Spannable) text, start, end);
8927                            // Make sure selection mode is engaged.
8928                            if (mEditor != null) {
8929                                mEditor.startSelectionActionMode();
8930                            }
8931                            return true;
8932                        }
8933                    }
8934                }
8935            } return false;
8936            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
8937            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
8938                ensureIterableTextForAccessibilitySelectable();
8939                return super.performAccessibilityActionInternal(action, arguments);
8940            }
8941            default: {
8942                return super.performAccessibilityActionInternal(action, arguments);
8943            }
8944        }
8945    }
8946
8947    /** @hide */
8948    @Override
8949    public void sendAccessibilityEventInternal(int eventType) {
8950        // Do not send scroll events since first they are not interesting for
8951        // accessibility and second such events a generated too frequently.
8952        // For details see the implementation of bringTextIntoView().
8953        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
8954            return;
8955        }
8956        super.sendAccessibilityEventInternal(eventType);
8957    }
8958
8959    /**
8960     * Gets the text reported for accessibility purposes.
8961     *
8962     * @return The accessibility text.
8963     *
8964     * @hide
8965     */
8966    public CharSequence getTextForAccessibility() {
8967        CharSequence text = getText();
8968        if (TextUtils.isEmpty(text)) {
8969            text = getHint();
8970        }
8971        return text;
8972    }
8973
8974    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8975            int fromIndex, int removedCount, int addedCount) {
8976        AccessibilityEvent event =
8977            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8978        event.setFromIndex(fromIndex);
8979        event.setRemovedCount(removedCount);
8980        event.setAddedCount(addedCount);
8981        event.setBeforeText(beforeText);
8982        sendAccessibilityEventUnchecked(event);
8983    }
8984
8985    /**
8986     * Returns whether this text view is a current input method target.  The
8987     * default implementation just checks with {@link InputMethodManager}.
8988     */
8989    public boolean isInputMethodTarget() {
8990        InputMethodManager imm = InputMethodManager.peekInstance();
8991        return imm != null && imm.isActive(this);
8992    }
8993
8994    static final int ID_SELECT_ALL = android.R.id.selectAll;
8995    static final int ID_UNDO = android.R.id.undo;
8996    static final int ID_REDO = android.R.id.redo;
8997    static final int ID_CUT = android.R.id.cut;
8998    static final int ID_COPY = android.R.id.copy;
8999    static final int ID_PASTE = android.R.id.paste;
9000    static final int ID_SHARE = android.R.id.shareText;
9001    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9002    static final int ID_REPLACE = android.R.id.replaceText;
9003
9004    /**
9005     * Called when a context menu option for the text view is selected.  Currently
9006     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9007     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9008     *
9009     * @return true if the context menu item action was performed.
9010     */
9011    public boolean onTextContextMenuItem(int id) {
9012        int min = 0;
9013        int max = mText.length();
9014
9015        if (isFocused()) {
9016            final int selStart = getSelectionStart();
9017            final int selEnd = getSelectionEnd();
9018
9019            min = Math.max(0, Math.min(selStart, selEnd));
9020            max = Math.max(0, Math.max(selStart, selEnd));
9021        }
9022
9023        switch (id) {
9024            case ID_SELECT_ALL:
9025                // This starts an action mode if triggered from another action mode. Text is
9026                // highlighted, so that it can be bulk edited, like selectAllOnFocus does. Returns
9027                // true even if text is empty.
9028                boolean shouldRestartActionMode =
9029                        mEditor != null && mEditor.mTextActionMode != null;
9030                stopTextActionMode();
9031                selectAllText();
9032                if (shouldRestartActionMode) {
9033                    mEditor.startSelectionActionMode();
9034                }
9035                return true;
9036
9037            case ID_UNDO:
9038                if (mEditor != null) {
9039                    mEditor.undo();
9040                }
9041                return true;  // Returns true even if nothing was undone.
9042
9043            case ID_REDO:
9044                if (mEditor != null) {
9045                    mEditor.redo();
9046                }
9047                return true;  // Returns true even if nothing was undone.
9048
9049            case ID_PASTE:
9050                paste(min, max, true /* withFormatting */);
9051                return true;
9052
9053            case ID_PASTE_AS_PLAIN_TEXT:
9054                paste(min, max, false /* withFormatting */);
9055                return true;
9056
9057            case ID_CUT:
9058                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9059                deleteText_internal(min, max);
9060                stopTextActionMode();
9061                return true;
9062
9063            case ID_COPY:
9064                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9065                stopTextActionMode();
9066                return true;
9067
9068            case ID_REPLACE:
9069                if (mEditor != null) {
9070                    mEditor.replace();
9071                }
9072                return true;
9073
9074            case ID_SHARE:
9075                shareSelectedText();
9076                return true;
9077        }
9078        return false;
9079    }
9080
9081    CharSequence getTransformedText(int start, int end) {
9082        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9083    }
9084
9085    @Override
9086    public boolean performLongClick() {
9087        boolean handled = false;
9088
9089        if (super.performLongClick()) {
9090            handled = true;
9091        }
9092
9093        if (mEditor != null) {
9094            handled |= mEditor.performLongClick(handled);
9095        }
9096
9097        if (handled) {
9098            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9099            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9100        }
9101
9102        return handled;
9103    }
9104
9105    @Override
9106    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9107        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9108        if (mEditor != null) {
9109            mEditor.onScrollChanged();
9110        }
9111    }
9112
9113    /**
9114     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9115     * by the IME or by the spell checker as the user types. This is done by adding
9116     * {@link SuggestionSpan}s to the text.
9117     *
9118     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9119     * user asks for them on these parts of the text. This value depends on the inputType of this
9120     * TextView.
9121     *
9122     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9123     *
9124     * In addition, the type variation must be one of
9125     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9126     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9127     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9128     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9129     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9130     *
9131     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9132     *
9133     * @return true if the suggestions popup window is enabled, based on the inputType.
9134     */
9135    public boolean isSuggestionsEnabled() {
9136        if (mEditor == null) return false;
9137        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9138            return false;
9139        }
9140        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9141
9142        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9143        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9144                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9145                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9146                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9147                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9148    }
9149
9150    /**
9151     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9152     * selection is initiated in this View.
9153     *
9154     * The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9155     * Paste, Replace and Share actions, depending on what this View supports.
9156     *
9157     * A custom implementation can add new entries in the default menu in its
9158     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
9159     * default actions can also be removed from the menu using
9160     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9161     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9162     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9163     *
9164     * Returning false from
9165     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
9166     * the action mode from being started.
9167     *
9168     * Action click events should be handled by the custom implementation of
9169     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
9170     *
9171     * Note that text selection mode is not started when a TextView receives focus and the
9172     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9173     * that case, to allow for quick replacement.
9174     */
9175    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9176        createEditorIfNeeded();
9177        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9178    }
9179
9180    /**
9181     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9182     *
9183     * @return The current custom selection callback.
9184     */
9185    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9186        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9187    }
9188
9189    /**
9190     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9191     * insertion is initiated in this View.
9192     * The standard implementation populates the menu with a subset of Select All,
9193     * Paste and Replace actions, depending on what this View supports.
9194     *
9195     * <p>A custom implementation can add new entries in the default menu in its
9196     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9197     * android.view.Menu)} method. The default actions can also be removed from the menu using
9198     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9199     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9200     *
9201     * <p>Returning false from
9202     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9203     * android.view.Menu)} will prevent the action mode from being started.</p>
9204     *
9205     * <p>Action click events should be handled by the custom implementation of
9206     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9207     * android.view.MenuItem)}.</p>
9208     *
9209     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9210     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9211     */
9212    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9213        createEditorIfNeeded();
9214        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9215    }
9216
9217    /**
9218     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9219     *
9220     * @return The current custom insertion callback.
9221     */
9222    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9223        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9224    }
9225
9226    /**
9227     * @hide
9228     */
9229    protected void stopTextActionMode() {
9230        if (mEditor != null) {
9231            mEditor.stopTextActionMode();
9232        }
9233    }
9234
9235    boolean canUndo() {
9236        return mEditor != null && mEditor.canUndo();
9237    }
9238
9239    boolean canRedo() {
9240        return mEditor != null && mEditor.canRedo();
9241    }
9242
9243    boolean canCut() {
9244        if (hasPasswordTransformationMethod()) {
9245            return false;
9246        }
9247
9248        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9249                mEditor.mKeyListener != null) {
9250            return true;
9251        }
9252
9253        return false;
9254    }
9255
9256    boolean canCopy() {
9257        if (hasPasswordTransformationMethod()) {
9258            return false;
9259        }
9260
9261        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9262            return true;
9263        }
9264
9265        return false;
9266    }
9267
9268    boolean canShare() {
9269        return canCopy();
9270    }
9271
9272    boolean canPaste() {
9273        return (mText instanceof Editable &&
9274                mEditor != null && mEditor.mKeyListener != null &&
9275                getSelectionStart() >= 0 &&
9276                getSelectionEnd() >= 0 &&
9277                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9278                hasPrimaryClip());
9279    }
9280
9281    boolean canProcessText() {
9282        if (!getContext().canStartActivityForResult() || getId() == View.NO_ID
9283                || hasPasswordTransformationMethod()) {
9284            return false;
9285        }
9286
9287        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9288            return true;
9289        }
9290
9291        return false;
9292    }
9293
9294    boolean canSelectAllText() {
9295        return canSelectText() && !hasPasswordTransformationMethod()
9296                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9297    }
9298
9299    boolean selectAllText() {
9300        // Need to hide insert point cursor controller before settings selection, otherwise insert
9301        // point cursor controller obtains cursor update event and update cursor with cancelling
9302        // selection.
9303        if (mEditor != null) {
9304            mEditor.hideInsertionPointCursorController();
9305        }
9306        final int length = mText.length();
9307        Selection.setSelection((Spannable) mText, 0, length);
9308        return length > 0;
9309    }
9310
9311    void replaceSelectionWithText(CharSequence text) {
9312        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9313    }
9314
9315    /**
9316     * Paste clipboard content between min and max positions.
9317     */
9318    private void paste(int min, int max, boolean withFormatting) {
9319        ClipboardManager clipboard =
9320            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9321        ClipData clip = clipboard.getPrimaryClip();
9322        if (clip != null) {
9323            boolean didFirst = false;
9324            for (int i=0; i<clip.getItemCount(); i++) {
9325                final CharSequence paste;
9326                if (withFormatting) {
9327                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9328                } else {
9329                    // Get an item as text and remove all spans by toString().
9330                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9331                    paste = (text instanceof Spanned) ? text.toString() : text;
9332                }
9333                if (paste != null) {
9334                    if (!didFirst) {
9335                        Selection.setSelection((Spannable) mText, max);
9336                        ((Editable) mText).replace(min, max, paste);
9337                        didFirst = true;
9338                    } else {
9339                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9340                        ((Editable) mText).insert(getSelectionEnd(), paste);
9341                    }
9342                }
9343            }
9344            stopTextActionMode();
9345            sLastCutCopyOrTextChangedTime = 0;
9346        }
9347    }
9348
9349    private void shareSelectedText() {
9350        String selectedText = getSelectedText();
9351        if (selectedText != null && !selectedText.isEmpty()) {
9352            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9353            sharingIntent.setType("text/plain");
9354            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9355            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9356            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9357            stopTextActionMode();
9358        }
9359    }
9360
9361    private void setPrimaryClip(ClipData clip) {
9362        ClipboardManager clipboard = (ClipboardManager) getContext().
9363                getSystemService(Context.CLIPBOARD_SERVICE);
9364        clipboard.setPrimaryClip(clip);
9365        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9366    }
9367
9368    /**
9369     * Get the character offset closest to the specified absolute position. A typical use case is to
9370     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9371     *
9372     * @param x The horizontal absolute position of a point on screen
9373     * @param y The vertical absolute position of a point on screen
9374     * @return the character offset for the character whose position is closest to the specified
9375     *  position. Returns -1 if there is no layout.
9376     */
9377    public int getOffsetForPosition(float x, float y) {
9378        if (getLayout() == null) return -1;
9379        final int line = getLineAtCoordinate(y);
9380        final int offset = getOffsetAtCoordinate(line, x);
9381        return offset;
9382    }
9383
9384    float convertToLocalHorizontalCoordinate(float x) {
9385        x -= getTotalPaddingLeft();
9386        // Clamp the position to inside of the view.
9387        x = Math.max(0.0f, x);
9388        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9389        x += getScrollX();
9390        return x;
9391    }
9392
9393    int getLineAtCoordinate(float y) {
9394        y -= getTotalPaddingTop();
9395        // Clamp the position to inside of the view.
9396        y = Math.max(0.0f, y);
9397        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9398        y += getScrollY();
9399        return getLayout().getLineForVertical((int) y);
9400    }
9401
9402    int getOffsetAtCoordinate(int line, float x) {
9403        x = convertToLocalHorizontalCoordinate(x);
9404        return getLayout().getOffsetForHorizontal(line, x);
9405    }
9406
9407    @Override
9408    public boolean onDragEvent(DragEvent event) {
9409        switch (event.getAction()) {
9410            case DragEvent.ACTION_DRAG_STARTED:
9411                return mEditor != null && mEditor.hasInsertionController();
9412
9413            case DragEvent.ACTION_DRAG_ENTERED:
9414                TextView.this.requestFocus();
9415                return true;
9416
9417            case DragEvent.ACTION_DRAG_LOCATION:
9418                final int offset = getOffsetForPosition(event.getX(), event.getY());
9419                Selection.setSelection((Spannable)mText, offset);
9420                return true;
9421
9422            case DragEvent.ACTION_DROP:
9423                if (mEditor != null) mEditor.onDrop(event);
9424                return true;
9425
9426            case DragEvent.ACTION_DRAG_ENDED:
9427            case DragEvent.ACTION_DRAG_EXITED:
9428            default:
9429                return true;
9430        }
9431    }
9432
9433    boolean isInBatchEditMode() {
9434        if (mEditor == null) return false;
9435        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9436        if (ims != null) {
9437            return ims.mBatchEditNesting > 0;
9438        }
9439        return mEditor.mInBatchEditControllers;
9440    }
9441
9442    @Override
9443    public void onRtlPropertiesChanged(int layoutDirection) {
9444        super.onRtlPropertiesChanged(layoutDirection);
9445
9446        mTextDir = getTextDirectionHeuristic();
9447
9448        if (mLayout != null) {
9449            checkForRelayout();
9450        }
9451    }
9452
9453    TextDirectionHeuristic getTextDirectionHeuristic() {
9454        if (hasPasswordTransformationMethod()) {
9455            // passwords fields should be LTR
9456            return TextDirectionHeuristics.LTR;
9457        }
9458
9459        // Always need to resolve layout direction first
9460        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9461
9462        // Now, we can select the heuristic
9463        switch (getTextDirection()) {
9464            default:
9465            case TEXT_DIRECTION_FIRST_STRONG:
9466                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9467                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9468            case TEXT_DIRECTION_ANY_RTL:
9469                return TextDirectionHeuristics.ANYRTL_LTR;
9470            case TEXT_DIRECTION_LTR:
9471                return TextDirectionHeuristics.LTR;
9472            case TEXT_DIRECTION_RTL:
9473                return TextDirectionHeuristics.RTL;
9474            case TEXT_DIRECTION_LOCALE:
9475                return TextDirectionHeuristics.LOCALE;
9476            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9477                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9478            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9479                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9480        }
9481    }
9482
9483    /**
9484     * @hide
9485     */
9486    @Override
9487    public void onResolveDrawables(int layoutDirection) {
9488        // No need to resolve twice
9489        if (mLastLayoutDirection == layoutDirection) {
9490            return;
9491        }
9492        mLastLayoutDirection = layoutDirection;
9493
9494        // Resolve drawables
9495        if (mDrawables != null) {
9496            mDrawables.resolveWithLayoutDirection(layoutDirection);
9497        }
9498    }
9499
9500    /**
9501     * @hide
9502     */
9503    protected void resetResolvedDrawables() {
9504        super.resetResolvedDrawables();
9505        mLastLayoutDirection = -1;
9506    }
9507
9508    /**
9509     * @hide
9510     */
9511    protected void viewClicked(InputMethodManager imm) {
9512        if (imm != null) {
9513            imm.viewClicked(this);
9514        }
9515    }
9516
9517    /**
9518     * Deletes the range of text [start, end[.
9519     * @hide
9520     */
9521    protected void deleteText_internal(int start, int end) {
9522        ((Editable) mText).delete(start, end);
9523    }
9524
9525    /**
9526     * Replaces the range of text [start, end[ by replacement text
9527     * @hide
9528     */
9529    protected void replaceText_internal(int start, int end, CharSequence text) {
9530        ((Editable) mText).replace(start, end, text);
9531    }
9532
9533    /**
9534     * Sets a span on the specified range of text
9535     * @hide
9536     */
9537    protected void setSpan_internal(Object span, int start, int end, int flags) {
9538        ((Editable) mText).setSpan(span, start, end, flags);
9539    }
9540
9541    /**
9542     * Moves the cursor to the specified offset position in text
9543     * @hide
9544     */
9545    protected void setCursorPosition_internal(int start, int end) {
9546        Selection.setSelection(((Editable) mText), start, end);
9547    }
9548
9549    /**
9550     * An Editor should be created as soon as any of the editable-specific fields (grouped
9551     * inside the Editor object) is assigned to a non-default value.
9552     * This method will create the Editor if needed.
9553     *
9554     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9555     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9556     * Editor for backward compatibility, as soon as one of these fields is assigned.
9557     *
9558     * Also note that for performance reasons, the mEditor is created when needed, but not
9559     * reset when no more edit-specific fields are needed.
9560     */
9561    private void createEditorIfNeeded() {
9562        if (mEditor == null) {
9563            mEditor = new Editor(this);
9564        }
9565    }
9566
9567    /**
9568     * @hide
9569     */
9570    @Override
9571    public CharSequence getIterableTextForAccessibility() {
9572        return mText;
9573    }
9574
9575    private void ensureIterableTextForAccessibilitySelectable() {
9576        if (!(mText instanceof Spannable)) {
9577            setText(mText, BufferType.SPANNABLE);
9578        }
9579    }
9580
9581    /**
9582     * @hide
9583     */
9584    @Override
9585    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9586        switch (granularity) {
9587            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9588                Spannable text = (Spannable) getIterableTextForAccessibility();
9589                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9590                    AccessibilityIterators.LineTextSegmentIterator iterator =
9591                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9592                    iterator.initialize(text, getLayout());
9593                    return iterator;
9594                }
9595            } break;
9596            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9597                Spannable text = (Spannable) getIterableTextForAccessibility();
9598                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9599                    AccessibilityIterators.PageTextSegmentIterator iterator =
9600                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9601                    iterator.initialize(this);
9602                    return iterator;
9603                }
9604            } break;
9605        }
9606        return super.getIteratorForGranularity(granularity);
9607    }
9608
9609    /**
9610     * @hide
9611     */
9612    @Override
9613    public int getAccessibilitySelectionStart() {
9614        return getSelectionStart();
9615    }
9616
9617    /**
9618     * @hide
9619     */
9620    public boolean isAccessibilitySelectionExtendable() {
9621        return true;
9622    }
9623
9624    /**
9625     * @hide
9626     */
9627    @Override
9628    public int getAccessibilitySelectionEnd() {
9629        return getSelectionEnd();
9630    }
9631
9632    /**
9633     * @hide
9634     */
9635    @Override
9636    public void setAccessibilitySelection(int start, int end) {
9637        if (getAccessibilitySelectionStart() == start
9638                && getAccessibilitySelectionEnd() == end) {
9639            return;
9640        }
9641        // Hide all selection controllers used for adjusting selection
9642        // since we are doing so explicitlty by other means and these
9643        // controllers interact with how selection behaves.
9644        if (mEditor != null) {
9645            mEditor.hideControllers();
9646        }
9647        CharSequence text = getIterableTextForAccessibility();
9648        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9649            Selection.setSelection((Spannable) text, start, end);
9650        } else {
9651            Selection.removeSelection((Spannable) text);
9652        }
9653    }
9654
9655    /** @hide */
9656    @Override
9657    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
9658        super.encodeProperties(stream);
9659
9660        TruncateAt ellipsize = getEllipsize();
9661        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
9662        stream.addProperty("text:textSize", getTextSize());
9663        stream.addProperty("text:scaledTextSize", getScaledTextSize());
9664        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
9665        stream.addProperty("text:selectionStart", getSelectionStart());
9666        stream.addProperty("text:selectionEnd", getSelectionEnd());
9667        stream.addProperty("text:curTextColor", mCurTextColor);
9668        stream.addProperty("text:text", mText == null ? null : mText.toString());
9669        stream.addProperty("text:gravity", mGravity);
9670    }
9671
9672    /**
9673     * User interface state that is stored by TextView for implementing
9674     * {@link View#onSaveInstanceState}.
9675     */
9676    public static class SavedState extends BaseSavedState {
9677        int selStart;
9678        int selEnd;
9679        CharSequence text;
9680        boolean frozenWithFocus;
9681        CharSequence error;
9682        ParcelableParcel editorState;  // Optional state from Editor.
9683
9684        SavedState(Parcelable superState) {
9685            super(superState);
9686        }
9687
9688        @Override
9689        public void writeToParcel(Parcel out, int flags) {
9690            super.writeToParcel(out, flags);
9691            out.writeInt(selStart);
9692            out.writeInt(selEnd);
9693            out.writeInt(frozenWithFocus ? 1 : 0);
9694            TextUtils.writeToParcel(text, out, flags);
9695
9696            if (error == null) {
9697                out.writeInt(0);
9698            } else {
9699                out.writeInt(1);
9700                TextUtils.writeToParcel(error, out, flags);
9701            }
9702
9703            if (editorState == null) {
9704                out.writeInt(0);
9705            } else {
9706                out.writeInt(1);
9707                editorState.writeToParcel(out, flags);
9708            }
9709        }
9710
9711        @Override
9712        public String toString() {
9713            String str = "TextView.SavedState{"
9714                    + Integer.toHexString(System.identityHashCode(this))
9715                    + " start=" + selStart + " end=" + selEnd;
9716            if (text != null) {
9717                str += " text=" + text;
9718            }
9719            return str + "}";
9720        }
9721
9722        @SuppressWarnings("hiding")
9723        public static final Parcelable.Creator<SavedState> CREATOR
9724                = new Parcelable.Creator<SavedState>() {
9725            public SavedState createFromParcel(Parcel in) {
9726                return new SavedState(in);
9727            }
9728
9729            public SavedState[] newArray(int size) {
9730                return new SavedState[size];
9731            }
9732        };
9733
9734        private SavedState(Parcel in) {
9735            super(in);
9736            selStart = in.readInt();
9737            selEnd = in.readInt();
9738            frozenWithFocus = (in.readInt() != 0);
9739            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9740
9741            if (in.readInt() != 0) {
9742                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9743            }
9744
9745            if (in.readInt() != 0) {
9746                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
9747            }
9748        }
9749    }
9750
9751    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
9752        private char[] mChars;
9753        private int mStart, mLength;
9754
9755        public CharWrapper(char[] chars, int start, int len) {
9756            mChars = chars;
9757            mStart = start;
9758            mLength = len;
9759        }
9760
9761        /* package */ void set(char[] chars, int start, int len) {
9762            mChars = chars;
9763            mStart = start;
9764            mLength = len;
9765        }
9766
9767        public int length() {
9768            return mLength;
9769        }
9770
9771        public char charAt(int off) {
9772            return mChars[off + mStart];
9773        }
9774
9775        @Override
9776        public String toString() {
9777            return new String(mChars, mStart, mLength);
9778        }
9779
9780        public CharSequence subSequence(int start, int end) {
9781            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9782                throw new IndexOutOfBoundsException(start + ", " + end);
9783            }
9784
9785            return new String(mChars, start + mStart, end - start);
9786        }
9787
9788        public void getChars(int start, int end, char[] buf, int off) {
9789            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9790                throw new IndexOutOfBoundsException(start + ", " + end);
9791            }
9792
9793            System.arraycopy(mChars, start + mStart, buf, off, end - start);
9794        }
9795
9796        public void drawText(Canvas c, int start, int end,
9797                             float x, float y, Paint p) {
9798            c.drawText(mChars, start + mStart, end - start, x, y, p);
9799        }
9800
9801        public void drawTextRun(Canvas c, int start, int end,
9802                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
9803            int count = end - start;
9804            int contextCount = contextEnd - contextStart;
9805            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
9806                    contextCount, x, y, isRtl, p);
9807        }
9808
9809        public float measureText(int start, int end, Paint p) {
9810            return p.measureText(mChars, start + mStart, end - start);
9811        }
9812
9813        public int getTextWidths(int start, int end, float[] widths, Paint p) {
9814            return p.getTextWidths(mChars, start + mStart, end - start, widths);
9815        }
9816
9817        public float getTextRunAdvances(int start, int end, int contextStart,
9818                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
9819                Paint p) {
9820            int count = end - start;
9821            int contextCount = contextEnd - contextStart;
9822            return p.getTextRunAdvances(mChars, start + mStart, count,
9823                    contextStart + mStart, contextCount, isRtl, advances,
9824                    advancesIndex);
9825        }
9826
9827        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
9828                int offset, int cursorOpt, Paint p) {
9829            int contextCount = contextEnd - contextStart;
9830            return p.getTextRunCursor(mChars, contextStart + mStart,
9831                    contextCount, dir, offset + mStart, cursorOpt);
9832        }
9833    }
9834
9835    private static final class Marquee {
9836        // TODO: Add an option to configure this
9837        private static final float MARQUEE_DELTA_MAX = 0.07f;
9838        private static final int MARQUEE_DELAY = 1200;
9839        private static final int MARQUEE_DP_PER_SECOND = 30;
9840
9841        private static final byte MARQUEE_STOPPED = 0x0;
9842        private static final byte MARQUEE_STARTING = 0x1;
9843        private static final byte MARQUEE_RUNNING = 0x2;
9844
9845        private final WeakReference<TextView> mView;
9846        private final Choreographer mChoreographer;
9847
9848        private byte mStatus = MARQUEE_STOPPED;
9849        private final float mPixelsPerSecond;
9850        private float mMaxScroll;
9851        private float mMaxFadeScroll;
9852        private float mGhostStart;
9853        private float mGhostOffset;
9854        private float mFadeStop;
9855        private int mRepeatLimit;
9856
9857        private float mScroll;
9858        private long mLastAnimationMs;
9859
9860        Marquee(TextView v) {
9861            final float density = v.getContext().getResources().getDisplayMetrics().density;
9862            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
9863            mView = new WeakReference<TextView>(v);
9864            mChoreographer = Choreographer.getInstance();
9865        }
9866
9867        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
9868            @Override
9869            public void doFrame(long frameTimeNanos) {
9870                tick();
9871            }
9872        };
9873
9874        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
9875            @Override
9876            public void doFrame(long frameTimeNanos) {
9877                mStatus = MARQUEE_RUNNING;
9878                mLastAnimationMs = mChoreographer.getFrameTime();
9879                tick();
9880            }
9881        };
9882
9883        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
9884            @Override
9885            public void doFrame(long frameTimeNanos) {
9886                if (mStatus == MARQUEE_RUNNING) {
9887                    if (mRepeatLimit >= 0) {
9888                        mRepeatLimit--;
9889                    }
9890                    start(mRepeatLimit);
9891                }
9892            }
9893        };
9894
9895        void tick() {
9896            if (mStatus != MARQUEE_RUNNING) {
9897                return;
9898            }
9899
9900            mChoreographer.removeFrameCallback(mTickCallback);
9901
9902            final TextView textView = mView.get();
9903            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9904                long currentMs = mChoreographer.getFrameTime();
9905                long deltaMs = currentMs - mLastAnimationMs;
9906                mLastAnimationMs = currentMs;
9907                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
9908                mScroll += deltaPx;
9909                if (mScroll > mMaxScroll) {
9910                    mScroll = mMaxScroll;
9911                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
9912                } else {
9913                    mChoreographer.postFrameCallback(mTickCallback);
9914                }
9915                textView.invalidate();
9916            }
9917        }
9918
9919        void stop() {
9920            mStatus = MARQUEE_STOPPED;
9921            mChoreographer.removeFrameCallback(mStartCallback);
9922            mChoreographer.removeFrameCallback(mRestartCallback);
9923            mChoreographer.removeFrameCallback(mTickCallback);
9924            resetScroll();
9925        }
9926
9927        private void resetScroll() {
9928            mScroll = 0.0f;
9929            final TextView textView = mView.get();
9930            if (textView != null) textView.invalidate();
9931        }
9932
9933        void start(int repeatLimit) {
9934            if (repeatLimit == 0) {
9935                stop();
9936                return;
9937            }
9938            mRepeatLimit = repeatLimit;
9939            final TextView textView = mView.get();
9940            if (textView != null && textView.mLayout != null) {
9941                mStatus = MARQUEE_STARTING;
9942                mScroll = 0.0f;
9943                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9944                        textView.getCompoundPaddingRight();
9945                final float lineWidth = textView.mLayout.getLineWidth(0);
9946                final float gap = textWidth / 3.0f;
9947                mGhostStart = lineWidth - textWidth + gap;
9948                mMaxScroll = mGhostStart + textWidth;
9949                mGhostOffset = lineWidth + gap;
9950                mFadeStop = lineWidth + textWidth / 6.0f;
9951                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9952
9953                textView.invalidate();
9954                mChoreographer.postFrameCallback(mStartCallback);
9955            }
9956        }
9957
9958        float getGhostOffset() {
9959            return mGhostOffset;
9960        }
9961
9962        float getScroll() {
9963            return mScroll;
9964        }
9965
9966        float getMaxFadeScroll() {
9967            return mMaxFadeScroll;
9968        }
9969
9970        boolean shouldDrawLeftFade() {
9971            return mScroll <= mFadeStop;
9972        }
9973
9974        boolean shouldDrawGhost() {
9975            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9976        }
9977
9978        boolean isRunning() {
9979            return mStatus == MARQUEE_RUNNING;
9980        }
9981
9982        boolean isStopped() {
9983            return mStatus == MARQUEE_STOPPED;
9984        }
9985    }
9986
9987    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9988
9989        private CharSequence mBeforeText;
9990
9991        public void beforeTextChanged(CharSequence buffer, int start,
9992                                      int before, int after) {
9993            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9994                    + " before=" + before + " after=" + after + ": " + buffer);
9995
9996            if (AccessibilityManager.getInstance(mContext).isEnabled()
9997                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
9998                            || shouldSpeakPasswordsForAccessibility())) {
9999                mBeforeText = buffer.toString();
10000            }
10001
10002            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10003        }
10004
10005        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10006            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10007                    + " before=" + before + " after=" + after + ": " + buffer);
10008            TextView.this.handleTextChanged(buffer, start, before, after);
10009
10010            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10011                    (isFocused() || isSelected() && isShown())) {
10012                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10013                mBeforeText = null;
10014            }
10015        }
10016
10017        public void afterTextChanged(Editable buffer) {
10018            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10019            TextView.this.sendAfterTextChanged(buffer);
10020
10021            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10022                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10023            }
10024        }
10025
10026        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10027            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10028                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10029            TextView.this.spanChange(buf, what, s, st, e, en);
10030        }
10031
10032        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10033            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10034                    + " what=" + what + ": " + buf);
10035            TextView.this.spanChange(buf, what, -1, s, -1, e);
10036        }
10037
10038        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10039            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10040                    + " what=" + what + ": " + buf);
10041            TextView.this.spanChange(buf, what, s, -1, e, -1);
10042        }
10043    }
10044}
10045