TextView.java revision a25dc428db3ec951933b619b2e0cbad8e2244b52 
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.content.ClipData;
21import android.content.ClipboardManager;
22import android.content.Context;
23import android.content.UndoManager;
24import android.content.res.ColorStateList;
25import android.content.res.CompatibilityInfo;
26import android.content.res.Resources;
27import android.content.res.TypedArray;
28import android.content.res.XmlResourceParser;
29import android.graphics.Canvas;
30import android.graphics.Insets;
31import android.graphics.Paint;
32import android.graphics.Path;
33import android.graphics.Rect;
34import android.graphics.RectF;
35import android.graphics.Typeface;
36import android.graphics.drawable.Drawable;
37import android.inputmethodservice.ExtractEditText;
38import android.os.AsyncTask;
39import android.os.Bundle;
40import android.os.Parcel;
41import android.os.Parcelable;
42import android.os.SystemClock;
43import android.provider.Settings;
44import android.text.BoringLayout;
45import android.text.DynamicLayout;
46import android.text.Editable;
47import android.text.GetChars;
48import android.text.GraphicsOperations;
49import android.text.InputFilter;
50import android.text.InputType;
51import android.text.Layout;
52import android.text.ParcelableSpan;
53import android.text.Selection;
54import android.text.SpanWatcher;
55import android.text.Spannable;
56import android.text.SpannableString;
57import android.text.SpannableStringBuilder;
58import android.text.Spanned;
59import android.text.SpannedString;
60import android.text.StaticLayout;
61import android.text.TextDirectionHeuristic;
62import android.text.TextDirectionHeuristics;
63import android.text.TextPaint;
64import android.text.TextUtils;
65import android.text.TextUtils.TruncateAt;
66import android.text.TextWatcher;
67import android.text.method.AllCapsTransformationMethod;
68import android.text.method.ArrowKeyMovementMethod;
69import android.text.method.DateKeyListener;
70import android.text.method.DateTimeKeyListener;
71import android.text.method.DialerKeyListener;
72import android.text.method.DigitsKeyListener;
73import android.text.method.KeyListener;
74import android.text.method.LinkMovementMethod;
75import android.text.method.MetaKeyKeyListener;
76import android.text.method.MovementMethod;
77import android.text.method.PasswordTransformationMethod;
78import android.text.method.SingleLineTransformationMethod;
79import android.text.method.TextKeyListener;
80import android.text.method.TimeKeyListener;
81import android.text.method.TransformationMethod;
82import android.text.method.TransformationMethod2;
83import android.text.method.WordIterator;
84import android.text.style.CharacterStyle;
85import android.text.style.ClickableSpan;
86import android.text.style.ParagraphStyle;
87import android.text.style.SpellCheckSpan;
88import android.text.style.SuggestionSpan;
89import android.text.style.URLSpan;
90import android.text.style.UpdateAppearance;
91import android.text.util.Linkify;
92import android.util.AttributeSet;
93import android.util.FloatMath;
94import android.util.Log;
95import android.util.TypedValue;
96import android.view.AccessibilityIterators.TextSegmentIterator;
97import android.view.ActionMode;
98import android.view.Choreographer;
99import android.view.DragEvent;
100import android.view.Gravity;
101import android.view.HapticFeedbackConstants;
102import android.view.KeyCharacterMap;
103import android.view.KeyEvent;
104import android.view.Menu;
105import android.view.MenuItem;
106import android.view.MotionEvent;
107import android.view.View;
108import android.view.ViewConfiguration;
109import android.view.ViewDebug;
110import android.view.ViewGroup.LayoutParams;
111import android.view.ViewRootImpl;
112import android.view.ViewTreeObserver;
113import android.view.accessibility.AccessibilityEvent;
114import android.view.accessibility.AccessibilityManager;
115import android.view.accessibility.AccessibilityNodeInfo;
116import android.view.animation.AnimationUtils;
117import android.view.inputmethod.BaseInputConnection;
118import android.view.inputmethod.CompletionInfo;
119import android.view.inputmethod.CorrectionInfo;
120import android.view.inputmethod.EditorInfo;
121import android.view.inputmethod.ExtractedText;
122import android.view.inputmethod.ExtractedTextRequest;
123import android.view.inputmethod.InputConnection;
124import android.view.inputmethod.InputMethodManager;
125import android.view.textservice.SpellCheckerSubtype;
126import android.view.textservice.TextServicesManager;
127import android.widget.RemoteViews.RemoteView;
128
129import com.android.internal.util.FastMath;
130import com.android.internal.widget.EditableInputConnection;
131
132import org.xmlpull.v1.XmlPullParserException;
133
134import java.io.IOException;
135import java.lang.ref.WeakReference;
136import java.util.ArrayList;
137import java.util.Locale;
138
139import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
140
141/**
142 * Displays text to the user and optionally allows them to edit it.  A TextView
143 * is a complete text editor, however the basic class is configured to not
144 * allow editing; see {@link EditText} for a subclass that configures the text
145 * view for editing.
146 *
147 * <p>
148 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
149 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
150 * android:textIsSelectable} to "true" or call
151 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
152 * allows users to make selection gestures in the TextView, which in turn triggers the system's
153 * built-in copy/paste controls.
154 * <p>
155 * <b>XML attributes</b>
156 * <p>
157 * See {@link android.R.styleable#TextView TextView Attributes},
158 * {@link android.R.styleable#View View Attributes}
159 *
160 * @attr ref android.R.styleable#TextView_text
161 * @attr ref android.R.styleable#TextView_bufferType
162 * @attr ref android.R.styleable#TextView_hint
163 * @attr ref android.R.styleable#TextView_textColor
164 * @attr ref android.R.styleable#TextView_textColorHighlight
165 * @attr ref android.R.styleable#TextView_textColorHint
166 * @attr ref android.R.styleable#TextView_textAppearance
167 * @attr ref android.R.styleable#TextView_textColorLink
168 * @attr ref android.R.styleable#TextView_textSize
169 * @attr ref android.R.styleable#TextView_textScaleX
170 * @attr ref android.R.styleable#TextView_fontFamily
171 * @attr ref android.R.styleable#TextView_typeface
172 * @attr ref android.R.styleable#TextView_textStyle
173 * @attr ref android.R.styleable#TextView_cursorVisible
174 * @attr ref android.R.styleable#TextView_maxLines
175 * @attr ref android.R.styleable#TextView_maxHeight
176 * @attr ref android.R.styleable#TextView_lines
177 * @attr ref android.R.styleable#TextView_height
178 * @attr ref android.R.styleable#TextView_minLines
179 * @attr ref android.R.styleable#TextView_minHeight
180 * @attr ref android.R.styleable#TextView_maxEms
181 * @attr ref android.R.styleable#TextView_maxWidth
182 * @attr ref android.R.styleable#TextView_ems
183 * @attr ref android.R.styleable#TextView_width
184 * @attr ref android.R.styleable#TextView_minEms
185 * @attr ref android.R.styleable#TextView_minWidth
186 * @attr ref android.R.styleable#TextView_gravity
187 * @attr ref android.R.styleable#TextView_scrollHorizontally
188 * @attr ref android.R.styleable#TextView_password
189 * @attr ref android.R.styleable#TextView_singleLine
190 * @attr ref android.R.styleable#TextView_selectAllOnFocus
191 * @attr ref android.R.styleable#TextView_includeFontPadding
192 * @attr ref android.R.styleable#TextView_maxLength
193 * @attr ref android.R.styleable#TextView_shadowColor
194 * @attr ref android.R.styleable#TextView_shadowDx
195 * @attr ref android.R.styleable#TextView_shadowDy
196 * @attr ref android.R.styleable#TextView_shadowRadius
197 * @attr ref android.R.styleable#TextView_autoLink
198 * @attr ref android.R.styleable#TextView_linksClickable
199 * @attr ref android.R.styleable#TextView_numeric
200 * @attr ref android.R.styleable#TextView_digits
201 * @attr ref android.R.styleable#TextView_phoneNumber
202 * @attr ref android.R.styleable#TextView_inputMethod
203 * @attr ref android.R.styleable#TextView_capitalize
204 * @attr ref android.R.styleable#TextView_autoText
205 * @attr ref android.R.styleable#TextView_editable
206 * @attr ref android.R.styleable#TextView_freezesText
207 * @attr ref android.R.styleable#TextView_ellipsize
208 * @attr ref android.R.styleable#TextView_drawableTop
209 * @attr ref android.R.styleable#TextView_drawableBottom
210 * @attr ref android.R.styleable#TextView_drawableRight
211 * @attr ref android.R.styleable#TextView_drawableLeft
212 * @attr ref android.R.styleable#TextView_drawableStart
213 * @attr ref android.R.styleable#TextView_drawableEnd
214 * @attr ref android.R.styleable#TextView_drawablePadding
215 * @attr ref android.R.styleable#TextView_lineSpacingExtra
216 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
217 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
218 * @attr ref android.R.styleable#TextView_inputType
219 * @attr ref android.R.styleable#TextView_imeOptions
220 * @attr ref android.R.styleable#TextView_privateImeOptions
221 * @attr ref android.R.styleable#TextView_imeActionLabel
222 * @attr ref android.R.styleable#TextView_imeActionId
223 * @attr ref android.R.styleable#TextView_editorExtras
224 * @attr ref android.R.styleable#TextView_elegantTextHeight
225 */
226@RemoteView
227public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
228    static final String LOG_TAG = "TextView";
229    static final boolean DEBUG_EXTRACT = false;
230
231    // Enum for the "typeface" XML parameter.
232    // TODO: How can we get this from the XML instead of hardcoding it here?
233    private static final int SANS = 1;
234    private static final int SERIF = 2;
235    private static final int MONOSPACE = 3;
236
237    // Bitfield for the "numeric" XML parameter.
238    // TODO: How can we get this from the XML instead of hardcoding it here?
239    private static final int SIGNED = 2;
240    private static final int DECIMAL = 4;
241
242    /**
243     * Draw marquee text with fading edges as usual
244     */
245    private static final int MARQUEE_FADE_NORMAL = 0;
246
247    /**
248     * Draw marquee text as ellipsize end while inactive instead of with the fade.
249     * (Useful for devices where the fade can be expensive if overdone)
250     */
251    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
252
253    /**
254     * Draw marquee text with fading edges because it is currently active/animating.
255     */
256    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
257
258    private static final int LINES = 1;
259    private static final int EMS = LINES;
260    private static final int PIXELS = 2;
261
262    private static final RectF TEMP_RECTF = new RectF();
263
264    // XXX should be much larger
265    private static final int VERY_WIDE = 1024*1024;
266    private static final int ANIMATED_SCROLL_GAP = 250;
267
268    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
269    private static final Spanned EMPTY_SPANNED = new SpannedString("");
270
271    private static final int CHANGE_WATCHER_PRIORITY = 100;
272
273    // New state used to change background based on whether this TextView is multiline.
274    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
275
276    // System wide time for last cut or copy action.
277    static long LAST_CUT_OR_COPY_TIME;
278
279    private ColorStateList mTextColor;
280    private ColorStateList mHintTextColor;
281    private ColorStateList mLinkTextColor;
282    @ViewDebug.ExportedProperty(category = "text")
283    private int mCurTextColor;
284    private int mCurHintTextColor;
285    private boolean mFreezesText;
286    private boolean mTemporaryDetach;
287    private boolean mDispatchTemporaryDetach;
288
289    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
290    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
291
292    private float mShadowRadius, mShadowDx, mShadowDy;
293    private int mShadowColor;
294
295
296    private boolean mPreDrawRegistered;
297    private boolean mPreDrawListenerDetached;
298
299    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
300    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
301    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
302    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
303    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
304    private boolean mPreventDefaultMovement;
305
306    private TextUtils.TruncateAt mEllipsize;
307
308    static class Drawables {
309        final static int DRAWABLE_NONE = -1;
310        final static int DRAWABLE_RIGHT = 0;
311        final static int DRAWABLE_LEFT = 1;
312
313        final Rect mCompoundRect = new Rect();
314
315        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
316                mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
317
318        Drawable mDrawableLeftInitial, mDrawableRightInitial;
319        boolean mIsRtlCompatibilityMode;
320        boolean mOverride;
321
322        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
323                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
324
325        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
326                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
327
328        int mDrawablePadding;
329
330        int mDrawableSaved = DRAWABLE_NONE;
331
332        public Drawables(Context context) {
333            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
334            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
335                !context.getApplicationInfo().hasRtlSupport());
336            mOverride = false;
337        }
338
339        public void resolveWithLayoutDirection(int layoutDirection) {
340            // First reset "left" and "right" drawables to their initial values
341            mDrawableLeft = mDrawableLeftInitial;
342            mDrawableRight = mDrawableRightInitial;
343
344            if (mIsRtlCompatibilityMode) {
345                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
346                if (mDrawableStart != null && mDrawableLeft == null) {
347                    mDrawableLeft = mDrawableStart;
348                    mDrawableSizeLeft = mDrawableSizeStart;
349                    mDrawableHeightLeft = mDrawableHeightStart;
350                }
351                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
352                if (mDrawableEnd != null && mDrawableRight == null) {
353                    mDrawableRight = mDrawableEnd;
354                    mDrawableSizeRight = mDrawableSizeEnd;
355                    mDrawableHeightRight = mDrawableHeightEnd;
356                }
357            } else {
358                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
359                // drawable if and only if they have been defined
360                switch(layoutDirection) {
361                    case LAYOUT_DIRECTION_RTL:
362                        if (mOverride) {
363                            mDrawableRight = mDrawableStart;
364                            mDrawableSizeRight = mDrawableSizeStart;
365                            mDrawableHeightRight = mDrawableHeightStart;
366
367                            mDrawableLeft = mDrawableEnd;
368                            mDrawableSizeLeft = mDrawableSizeEnd;
369                            mDrawableHeightLeft = mDrawableHeightEnd;
370                        }
371                        break;
372
373                    case LAYOUT_DIRECTION_LTR:
374                    default:
375                        if (mOverride) {
376                            mDrawableLeft = mDrawableStart;
377                            mDrawableSizeLeft = mDrawableSizeStart;
378                            mDrawableHeightLeft = mDrawableHeightStart;
379
380                            mDrawableRight = mDrawableEnd;
381                            mDrawableSizeRight = mDrawableSizeEnd;
382                            mDrawableHeightRight = mDrawableHeightEnd;
383                        }
384                        break;
385                }
386            }
387            applyErrorDrawableIfNeeded(layoutDirection);
388            updateDrawablesLayoutDirection(layoutDirection);
389        }
390
391        private void updateDrawablesLayoutDirection(int layoutDirection) {
392            if (mDrawableLeft != null) {
393                mDrawableLeft.setLayoutDirection(layoutDirection);
394            }
395            if (mDrawableRight != null) {
396                mDrawableRight.setLayoutDirection(layoutDirection);
397            }
398            if (mDrawableTop != null) {
399                mDrawableTop.setLayoutDirection(layoutDirection);
400            }
401            if (mDrawableBottom != null) {
402                mDrawableBottom.setLayoutDirection(layoutDirection);
403            }
404        }
405
406        public void setErrorDrawable(Drawable dr, TextView tv) {
407            if (mDrawableError != dr && mDrawableError != null) {
408                mDrawableError.setCallback(null);
409            }
410            mDrawableError = dr;
411
412            final Rect compoundRect = mCompoundRect;
413            int[] state = tv.getDrawableState();
414
415            if (mDrawableError != null) {
416                mDrawableError.setState(state);
417                mDrawableError.copyBounds(compoundRect);
418                mDrawableError.setCallback(tv);
419                mDrawableSizeError = compoundRect.width();
420                mDrawableHeightError = compoundRect.height();
421            } else {
422                mDrawableSizeError = mDrawableHeightError = 0;
423            }
424        }
425
426        private void applyErrorDrawableIfNeeded(int layoutDirection) {
427            // first restore the initial state if needed
428            switch (mDrawableSaved) {
429                case DRAWABLE_LEFT:
430                    mDrawableLeft = mDrawableTemp;
431                    mDrawableSizeLeft = mDrawableSizeTemp;
432                    mDrawableHeightLeft = mDrawableHeightTemp;
433                    break;
434                case DRAWABLE_RIGHT:
435                    mDrawableRight = mDrawableTemp;
436                    mDrawableSizeRight = mDrawableSizeTemp;
437                    mDrawableHeightRight = mDrawableHeightTemp;
438                    break;
439                case DRAWABLE_NONE:
440                default:
441            }
442            // then, if needed, assign the Error drawable to the correct location
443            if (mDrawableError != null) {
444                switch(layoutDirection) {
445                    case LAYOUT_DIRECTION_RTL:
446                        mDrawableSaved = DRAWABLE_LEFT;
447
448                        mDrawableTemp = mDrawableLeft;
449                        mDrawableSizeTemp = mDrawableSizeLeft;
450                        mDrawableHeightTemp = mDrawableHeightLeft;
451
452                        mDrawableLeft = mDrawableError;
453                        mDrawableSizeLeft = mDrawableSizeError;
454                        mDrawableHeightLeft = mDrawableHeightError;
455                        break;
456                    case LAYOUT_DIRECTION_LTR:
457                    default:
458                        mDrawableSaved = DRAWABLE_RIGHT;
459
460                        mDrawableTemp = mDrawableRight;
461                        mDrawableSizeTemp = mDrawableSizeRight;
462                        mDrawableHeightTemp = mDrawableHeightRight;
463
464                        mDrawableRight = mDrawableError;
465                        mDrawableSizeRight = mDrawableSizeError;
466                        mDrawableHeightRight = mDrawableHeightError;
467                        break;
468                }
469            }
470        }
471    }
472
473    Drawables mDrawables;
474
475    private CharWrapper mCharWrapper;
476
477    private Marquee mMarquee;
478    private boolean mRestartMarquee;
479
480    private int mMarqueeRepeatLimit = 3;
481
482    private int mLastLayoutDirection = -1;
483
484    /**
485     * On some devices the fading edges add a performance penalty if used
486     * extensively in the same layout. This mode indicates how the marquee
487     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
488     */
489    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
490
491    /**
492     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
493     * the layout that should be used when the mode switches.
494     */
495    private Layout mSavedMarqueeModeLayout;
496
497    @ViewDebug.ExportedProperty(category = "text")
498    private CharSequence mText;
499    private CharSequence mTransformed;
500    private BufferType mBufferType = BufferType.NORMAL;
501
502    private CharSequence mHint;
503    private Layout mHintLayout;
504
505    private MovementMethod mMovement;
506
507    private TransformationMethod mTransformation;
508    private boolean mAllowTransformationLengthChange;
509    private ChangeWatcher mChangeWatcher;
510
511    private ArrayList<TextWatcher> mListeners;
512
513    // display attributes
514    private final TextPaint mTextPaint;
515    private boolean mUserSetTextScaleX;
516    private Layout mLayout;
517
518    private int mGravity = Gravity.TOP | Gravity.START;
519    private boolean mHorizontallyScrolling;
520
521    private int mAutoLinkMask;
522    private boolean mLinksClickable = true;
523
524    private float mSpacingMult = 1.0f;
525    private float mSpacingAdd = 0.0f;
526
527    private int mMaximum = Integer.MAX_VALUE;
528    private int mMaxMode = LINES;
529    private int mMinimum = 0;
530    private int mMinMode = LINES;
531
532    private int mOldMaximum = mMaximum;
533    private int mOldMaxMode = mMaxMode;
534
535    private int mMaxWidth = Integer.MAX_VALUE;
536    private int mMaxWidthMode = PIXELS;
537    private int mMinWidth = 0;
538    private int mMinWidthMode = PIXELS;
539
540    private boolean mSingleLine;
541    private int mDesiredHeightAtMeasure = -1;
542    private boolean mIncludePad = true;
543    private int mDeferScroll = -1;
544
545    // tmp primitives, so we don't alloc them on each draw
546    private Rect mTempRect;
547    private long mLastScroll;
548    private Scroller mScroller;
549
550    private BoringLayout.Metrics mBoring, mHintBoring;
551    private BoringLayout mSavedLayout, mSavedHintLayout;
552
553    private TextDirectionHeuristic mTextDir;
554
555    private InputFilter[] mFilters = NO_FILTERS;
556
557    private volatile Locale mCurrentSpellCheckerLocaleCache;
558
559    // It is possible to have a selection even when mEditor is null (programmatically set, like when
560    // a link is pressed). These highlight-related fields do not go in mEditor.
561    int mHighlightColor = 0x6633B5E5;
562    private Path mHighlightPath;
563    private final Paint mHighlightPaint;
564    private boolean mHighlightPathBogus = true;
565
566    // Although these fields are specific to editable text, they are not added to Editor because
567    // they are defined by the TextView's style and are theme-dependent.
568    int mCursorDrawableRes;
569    // These four fields, could be moved to Editor, since we know their default values and we
570    // could condition the creation of the Editor to a non standard value. This is however
571    // brittle since the hardcoded values here (such as
572    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
573    // default style is modified.
574    int mTextSelectHandleLeftRes;
575    int mTextSelectHandleRightRes;
576    int mTextSelectHandleRes;
577    int mTextEditSuggestionItemLayout;
578
579    /**
580     * EditText specific data, created on demand when one of the Editor fields is used.
581     * See {@link #createEditorIfNeeded()}.
582     */
583    private Editor mEditor;
584
585    /*
586     * Kick-start the font cache for the zygote process (to pay the cost of
587     * initializing freetype for our default font only once).
588     */
589    static {
590        Paint p = new Paint();
591        p.setAntiAlias(true);
592        // We don't care about the result, just the side-effect of measuring.
593        p.measureText("H");
594    }
595
596    /**
597     * Interface definition for a callback to be invoked when an action is
598     * performed on the editor.
599     */
600    public interface OnEditorActionListener {
601        /**
602         * Called when an action is being performed.
603         *
604         * @param v The view that was clicked.
605         * @param actionId Identifier of the action.  This will be either the
606         * identifier you supplied, or {@link EditorInfo#IME_NULL
607         * EditorInfo.IME_NULL} if being called due to the enter key
608         * being pressed.
609         * @param event If triggered by an enter key, this is the event;
610         * otherwise, this is null.
611         * @return Return true if you have consumed the action, else false.
612         */
613        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
614    }
615
616    public TextView(Context context) {
617        this(context, null);
618    }
619
620    public TextView(Context context, AttributeSet attrs) {
621        this(context, attrs, com.android.internal.R.attr.textViewStyle);
622    }
623
624    public TextView(Context context, AttributeSet attrs, int defStyleAttr) {
625        this(context, attrs, defStyleAttr, 0);
626    }
627
628    @SuppressWarnings("deprecation")
629    public TextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
630        super(context, attrs, defStyleAttr, defStyleRes);
631
632        mText = "";
633
634        final Resources res = getResources();
635        final CompatibilityInfo compat = res.getCompatibilityInfo();
636
637        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
638        mTextPaint.density = res.getDisplayMetrics().density;
639        mTextPaint.setCompatibilityScaling(compat.applicationScale);
640
641        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
642        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
643
644        mMovement = getDefaultMovementMethod();
645
646        mTransformation = null;
647
648        int textColorHighlight = 0;
649        ColorStateList textColor = null;
650        ColorStateList textColorHint = null;
651        ColorStateList textColorLink = null;
652        int textSize = 15;
653        String fontFamily = null;
654        int typefaceIndex = -1;
655        int styleIndex = -1;
656        boolean allCaps = false;
657        int shadowcolor = 0;
658        float dx = 0, dy = 0, r = 0;
659        boolean elegant = false;
660
661        final Resources.Theme theme = context.getTheme();
662
663        /*
664         * Look the appearance up without checking first if it exists because
665         * almost every TextView has one and it greatly simplifies the logic
666         * to be able to parse the appearance first and then let specific tags
667         * for this View override it.
668         */
669        TypedArray a = theme.obtainStyledAttributes(attrs,
670                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
671        TypedArray appearance = null;
672        int ap = a.getResourceId(
673                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
674        a.recycle();
675        if (ap != -1) {
676            appearance = theme.obtainStyledAttributes(
677                    ap, com.android.internal.R.styleable.TextAppearance);
678        }
679        if (appearance != null) {
680            int n = appearance.getIndexCount();
681            for (int i = 0; i < n; i++) {
682                int attr = appearance.getIndex(i);
683
684                switch (attr) {
685                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
686                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
687                    break;
688
689                case com.android.internal.R.styleable.TextAppearance_textColor:
690                    textColor = appearance.getColorStateList(attr);
691                    break;
692
693                case com.android.internal.R.styleable.TextAppearance_textColorHint:
694                    textColorHint = appearance.getColorStateList(attr);
695                    break;
696
697                case com.android.internal.R.styleable.TextAppearance_textColorLink:
698                    textColorLink = appearance.getColorStateList(attr);
699                    break;
700
701                case com.android.internal.R.styleable.TextAppearance_textSize:
702                    textSize = appearance.getDimensionPixelSize(attr, textSize);
703                    break;
704
705                case com.android.internal.R.styleable.TextAppearance_typeface:
706                    typefaceIndex = appearance.getInt(attr, -1);
707                    break;
708
709                case com.android.internal.R.styleable.TextAppearance_fontFamily:
710                    fontFamily = appearance.getString(attr);
711                    break;
712
713                case com.android.internal.R.styleable.TextAppearance_textStyle:
714                    styleIndex = appearance.getInt(attr, -1);
715                    break;
716
717                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
718                    allCaps = appearance.getBoolean(attr, false);
719                    break;
720
721                case com.android.internal.R.styleable.TextAppearance_shadowColor:
722                    shadowcolor = appearance.getInt(attr, 0);
723                    break;
724
725                case com.android.internal.R.styleable.TextAppearance_shadowDx:
726                    dx = appearance.getFloat(attr, 0);
727                    break;
728
729                case com.android.internal.R.styleable.TextAppearance_shadowDy:
730                    dy = appearance.getFloat(attr, 0);
731                    break;
732
733                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
734                    r = appearance.getFloat(attr, 0);
735                    break;
736
737                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
738                    elegant = appearance.getBoolean(attr, false);
739                    break;
740                }
741            }
742
743            appearance.recycle();
744        }
745
746        boolean editable = getDefaultEditable();
747        CharSequence inputMethod = null;
748        int numeric = 0;
749        CharSequence digits = null;
750        boolean phone = false;
751        boolean autotext = false;
752        int autocap = -1;
753        int buffertype = 0;
754        boolean selectallonfocus = false;
755        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
756            drawableBottom = null, drawableStart = null, drawableEnd = null;
757        int drawablePadding = 0;
758        int ellipsize = -1;
759        boolean singleLine = false;
760        int maxlength = -1;
761        CharSequence text = "";
762        CharSequence hint = null;
763        boolean password = false;
764        int inputType = EditorInfo.TYPE_NULL;
765
766        a = theme.obtainStyledAttributes(
767                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
768
769        int n = a.getIndexCount();
770        for (int i = 0; i < n; i++) {
771            int attr = a.getIndex(i);
772
773            switch (attr) {
774            case com.android.internal.R.styleable.TextView_editable:
775                editable = a.getBoolean(attr, editable);
776                break;
777
778            case com.android.internal.R.styleable.TextView_inputMethod:
779                inputMethod = a.getText(attr);
780                break;
781
782            case com.android.internal.R.styleable.TextView_numeric:
783                numeric = a.getInt(attr, numeric);
784                break;
785
786            case com.android.internal.R.styleable.TextView_digits:
787                digits = a.getText(attr);
788                break;
789
790            case com.android.internal.R.styleable.TextView_phoneNumber:
791                phone = a.getBoolean(attr, phone);
792                break;
793
794            case com.android.internal.R.styleable.TextView_autoText:
795                autotext = a.getBoolean(attr, autotext);
796                break;
797
798            case com.android.internal.R.styleable.TextView_capitalize:
799                autocap = a.getInt(attr, autocap);
800                break;
801
802            case com.android.internal.R.styleable.TextView_bufferType:
803                buffertype = a.getInt(attr, buffertype);
804                break;
805
806            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
807                selectallonfocus = a.getBoolean(attr, selectallonfocus);
808                break;
809
810            case com.android.internal.R.styleable.TextView_autoLink:
811                mAutoLinkMask = a.getInt(attr, 0);
812                break;
813
814            case com.android.internal.R.styleable.TextView_linksClickable:
815                mLinksClickable = a.getBoolean(attr, true);
816                break;
817
818            case com.android.internal.R.styleable.TextView_drawableLeft:
819                drawableLeft = a.getDrawable(attr);
820                break;
821
822            case com.android.internal.R.styleable.TextView_drawableTop:
823                drawableTop = a.getDrawable(attr);
824                break;
825
826            case com.android.internal.R.styleable.TextView_drawableRight:
827                drawableRight = a.getDrawable(attr);
828                break;
829
830            case com.android.internal.R.styleable.TextView_drawableBottom:
831                drawableBottom = a.getDrawable(attr);
832                break;
833
834            case com.android.internal.R.styleable.TextView_drawableStart:
835                drawableStart = a.getDrawable(attr);
836                break;
837
838            case com.android.internal.R.styleable.TextView_drawableEnd:
839                drawableEnd = a.getDrawable(attr);
840                break;
841
842            case com.android.internal.R.styleable.TextView_drawablePadding:
843                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
844                break;
845
846            case com.android.internal.R.styleable.TextView_maxLines:
847                setMaxLines(a.getInt(attr, -1));
848                break;
849
850            case com.android.internal.R.styleable.TextView_maxHeight:
851                setMaxHeight(a.getDimensionPixelSize(attr, -1));
852                break;
853
854            case com.android.internal.R.styleable.TextView_lines:
855                setLines(a.getInt(attr, -1));
856                break;
857
858            case com.android.internal.R.styleable.TextView_height:
859                setHeight(a.getDimensionPixelSize(attr, -1));
860                break;
861
862            case com.android.internal.R.styleable.TextView_minLines:
863                setMinLines(a.getInt(attr, -1));
864                break;
865
866            case com.android.internal.R.styleable.TextView_minHeight:
867                setMinHeight(a.getDimensionPixelSize(attr, -1));
868                break;
869
870            case com.android.internal.R.styleable.TextView_maxEms:
871                setMaxEms(a.getInt(attr, -1));
872                break;
873
874            case com.android.internal.R.styleable.TextView_maxWidth:
875                setMaxWidth(a.getDimensionPixelSize(attr, -1));
876                break;
877
878            case com.android.internal.R.styleable.TextView_ems:
879                setEms(a.getInt(attr, -1));
880                break;
881
882            case com.android.internal.R.styleable.TextView_width:
883                setWidth(a.getDimensionPixelSize(attr, -1));
884                break;
885
886            case com.android.internal.R.styleable.TextView_minEms:
887                setMinEms(a.getInt(attr, -1));
888                break;
889
890            case com.android.internal.R.styleable.TextView_minWidth:
891                setMinWidth(a.getDimensionPixelSize(attr, -1));
892                break;
893
894            case com.android.internal.R.styleable.TextView_gravity:
895                setGravity(a.getInt(attr, -1));
896                break;
897
898            case com.android.internal.R.styleable.TextView_hint:
899                hint = a.getText(attr);
900                break;
901
902            case com.android.internal.R.styleable.TextView_text:
903                text = a.getText(attr);
904                break;
905
906            case com.android.internal.R.styleable.TextView_scrollHorizontally:
907                if (a.getBoolean(attr, false)) {
908                    setHorizontallyScrolling(true);
909                }
910                break;
911
912            case com.android.internal.R.styleable.TextView_singleLine:
913                singleLine = a.getBoolean(attr, singleLine);
914                break;
915
916            case com.android.internal.R.styleable.TextView_ellipsize:
917                ellipsize = a.getInt(attr, ellipsize);
918                break;
919
920            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
921                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
922                break;
923
924            case com.android.internal.R.styleable.TextView_includeFontPadding:
925                if (!a.getBoolean(attr, true)) {
926                    setIncludeFontPadding(false);
927                }
928                break;
929
930            case com.android.internal.R.styleable.TextView_cursorVisible:
931                if (!a.getBoolean(attr, true)) {
932                    setCursorVisible(false);
933                }
934                break;
935
936            case com.android.internal.R.styleable.TextView_maxLength:
937                maxlength = a.getInt(attr, -1);
938                break;
939
940            case com.android.internal.R.styleable.TextView_textScaleX:
941                setTextScaleX(a.getFloat(attr, 1.0f));
942                break;
943
944            case com.android.internal.R.styleable.TextView_freezesText:
945                mFreezesText = a.getBoolean(attr, false);
946                break;
947
948            case com.android.internal.R.styleable.TextView_shadowColor:
949                shadowcolor = a.getInt(attr, 0);
950                break;
951
952            case com.android.internal.R.styleable.TextView_shadowDx:
953                dx = a.getFloat(attr, 0);
954                break;
955
956            case com.android.internal.R.styleable.TextView_shadowDy:
957                dy = a.getFloat(attr, 0);
958                break;
959
960            case com.android.internal.R.styleable.TextView_shadowRadius:
961                r = a.getFloat(attr, 0);
962                break;
963
964            case com.android.internal.R.styleable.TextView_enabled:
965                setEnabled(a.getBoolean(attr, isEnabled()));
966                break;
967
968            case com.android.internal.R.styleable.TextView_textColorHighlight:
969                textColorHighlight = a.getColor(attr, textColorHighlight);
970                break;
971
972            case com.android.internal.R.styleable.TextView_textColor:
973                textColor = a.getColorStateList(attr);
974                break;
975
976            case com.android.internal.R.styleable.TextView_textColorHint:
977                textColorHint = a.getColorStateList(attr);
978                break;
979
980            case com.android.internal.R.styleable.TextView_textColorLink:
981                textColorLink = a.getColorStateList(attr);
982                break;
983
984            case com.android.internal.R.styleable.TextView_textSize:
985                textSize = a.getDimensionPixelSize(attr, textSize);
986                break;
987
988            case com.android.internal.R.styleable.TextView_typeface:
989                typefaceIndex = a.getInt(attr, typefaceIndex);
990                break;
991
992            case com.android.internal.R.styleable.TextView_textStyle:
993                styleIndex = a.getInt(attr, styleIndex);
994                break;
995
996            case com.android.internal.R.styleable.TextView_fontFamily:
997                fontFamily = a.getString(attr);
998                break;
999
1000            case com.android.internal.R.styleable.TextView_password:
1001                password = a.getBoolean(attr, password);
1002                break;
1003
1004            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1005                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1006                break;
1007
1008            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1009                mSpacingMult = a.getFloat(attr, mSpacingMult);
1010                break;
1011
1012            case com.android.internal.R.styleable.TextView_inputType:
1013                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1014                break;
1015
1016            case com.android.internal.R.styleable.TextView_imeOptions:
1017                createEditorIfNeeded();
1018                mEditor.createInputContentTypeIfNeeded();
1019                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1020                        mEditor.mInputContentType.imeOptions);
1021                break;
1022
1023            case com.android.internal.R.styleable.TextView_imeActionLabel:
1024                createEditorIfNeeded();
1025                mEditor.createInputContentTypeIfNeeded();
1026                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1027                break;
1028
1029            case com.android.internal.R.styleable.TextView_imeActionId:
1030                createEditorIfNeeded();
1031                mEditor.createInputContentTypeIfNeeded();
1032                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1033                        mEditor.mInputContentType.imeActionId);
1034                break;
1035
1036            case com.android.internal.R.styleable.TextView_privateImeOptions:
1037                setPrivateImeOptions(a.getString(attr));
1038                break;
1039
1040            case com.android.internal.R.styleable.TextView_editorExtras:
1041                try {
1042                    setInputExtras(a.getResourceId(attr, 0));
1043                } catch (XmlPullParserException e) {
1044                    Log.w(LOG_TAG, "Failure reading input extras", e);
1045                } catch (IOException e) {
1046                    Log.w(LOG_TAG, "Failure reading input extras", e);
1047                }
1048                break;
1049
1050            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1051                mCursorDrawableRes = a.getResourceId(attr, 0);
1052                break;
1053
1054            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1055                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1056                break;
1057
1058            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1059                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1060                break;
1061
1062            case com.android.internal.R.styleable.TextView_textSelectHandle:
1063                mTextSelectHandleRes = a.getResourceId(attr, 0);
1064                break;
1065
1066            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1067                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1068                break;
1069
1070            case com.android.internal.R.styleable.TextView_textIsSelectable:
1071                setTextIsSelectable(a.getBoolean(attr, false));
1072                break;
1073
1074            case com.android.internal.R.styleable.TextView_textAllCaps:
1075                allCaps = a.getBoolean(attr, false);
1076                break;
1077
1078            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1079                elegant = a.getBoolean(attr, false);
1080                break;
1081            }
1082        }
1083        a.recycle();
1084
1085        BufferType bufferType = BufferType.EDITABLE;
1086
1087        final int variation =
1088                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1089        final boolean passwordInputType = variation
1090                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1091        final boolean webPasswordInputType = variation
1092                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1093        final boolean numberPasswordInputType = variation
1094                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1095
1096        if (inputMethod != null) {
1097            Class<?> c;
1098
1099            try {
1100                c = Class.forName(inputMethod.toString());
1101            } catch (ClassNotFoundException ex) {
1102                throw new RuntimeException(ex);
1103            }
1104
1105            try {
1106                createEditorIfNeeded();
1107                mEditor.mKeyListener = (KeyListener) c.newInstance();
1108            } catch (InstantiationException ex) {
1109                throw new RuntimeException(ex);
1110            } catch (IllegalAccessException ex) {
1111                throw new RuntimeException(ex);
1112            }
1113            try {
1114                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1115                        ? inputType
1116                        : mEditor.mKeyListener.getInputType();
1117            } catch (IncompatibleClassChangeError e) {
1118                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1119            }
1120        } else if (digits != null) {
1121            createEditorIfNeeded();
1122            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1123            // If no input type was specified, we will default to generic
1124            // text, since we can't tell the IME about the set of digits
1125            // that was selected.
1126            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1127                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1128        } else if (inputType != EditorInfo.TYPE_NULL) {
1129            setInputType(inputType, true);
1130            // If set, the input type overrides what was set using the deprecated singleLine flag.
1131            singleLine = !isMultilineInputType(inputType);
1132        } else if (phone) {
1133            createEditorIfNeeded();
1134            mEditor.mKeyListener = DialerKeyListener.getInstance();
1135            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1136        } else if (numeric != 0) {
1137            createEditorIfNeeded();
1138            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1139                                                   (numeric & DECIMAL) != 0);
1140            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1141            if ((numeric & SIGNED) != 0) {
1142                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1143            }
1144            if ((numeric & DECIMAL) != 0) {
1145                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1146            }
1147            mEditor.mInputType = inputType;
1148        } else if (autotext || autocap != -1) {
1149            TextKeyListener.Capitalize cap;
1150
1151            inputType = EditorInfo.TYPE_CLASS_TEXT;
1152
1153            switch (autocap) {
1154            case 1:
1155                cap = TextKeyListener.Capitalize.SENTENCES;
1156                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1157                break;
1158
1159            case 2:
1160                cap = TextKeyListener.Capitalize.WORDS;
1161                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1162                break;
1163
1164            case 3:
1165                cap = TextKeyListener.Capitalize.CHARACTERS;
1166                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1167                break;
1168
1169            default:
1170                cap = TextKeyListener.Capitalize.NONE;
1171                break;
1172            }
1173
1174            createEditorIfNeeded();
1175            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1176            mEditor.mInputType = inputType;
1177        } else if (isTextSelectable()) {
1178            // Prevent text changes from keyboard.
1179            if (mEditor != null) {
1180                mEditor.mKeyListener = null;
1181                mEditor.mInputType = EditorInfo.TYPE_NULL;
1182            }
1183            bufferType = BufferType.SPANNABLE;
1184            // So that selection can be changed using arrow keys and touch is handled.
1185            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1186        } else if (editable) {
1187            createEditorIfNeeded();
1188            mEditor.mKeyListener = TextKeyListener.getInstance();
1189            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1190        } else {
1191            if (mEditor != null) mEditor.mKeyListener = null;
1192
1193            switch (buffertype) {
1194                case 0:
1195                    bufferType = BufferType.NORMAL;
1196                    break;
1197                case 1:
1198                    bufferType = BufferType.SPANNABLE;
1199                    break;
1200                case 2:
1201                    bufferType = BufferType.EDITABLE;
1202                    break;
1203            }
1204        }
1205
1206        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1207                webPasswordInputType, numberPasswordInputType);
1208
1209        if (selectallonfocus) {
1210            createEditorIfNeeded();
1211            mEditor.mSelectAllOnFocus = true;
1212
1213            if (bufferType == BufferType.NORMAL)
1214                bufferType = BufferType.SPANNABLE;
1215        }
1216
1217        // This call will save the initial left/right drawables
1218        setCompoundDrawablesWithIntrinsicBounds(
1219            drawableLeft, drawableTop, drawableRight, drawableBottom);
1220        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1221        setCompoundDrawablePadding(drawablePadding);
1222
1223        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1224        // of lines of height are unchanged for multi-line TextViews.
1225        setInputTypeSingleLine(singleLine);
1226        applySingleLine(singleLine, singleLine, singleLine);
1227
1228        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1229                ellipsize = 3; // END
1230        }
1231
1232        switch (ellipsize) {
1233            case 1:
1234                setEllipsize(TextUtils.TruncateAt.START);
1235                break;
1236            case 2:
1237                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1238                break;
1239            case 3:
1240                setEllipsize(TextUtils.TruncateAt.END);
1241                break;
1242            case 4:
1243                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1244                    setHorizontalFadingEdgeEnabled(true);
1245                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1246                } else {
1247                    setHorizontalFadingEdgeEnabled(false);
1248                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1249                }
1250                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1251                break;
1252        }
1253
1254        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1255        setHintTextColor(textColorHint);
1256        setLinkTextColor(textColorLink);
1257        if (textColorHighlight != 0) {
1258            setHighlightColor(textColorHighlight);
1259        }
1260        setRawTextSize(textSize);
1261        setElegantTextHeight(elegant);
1262
1263        if (allCaps) {
1264            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1265        }
1266
1267        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1268            setTransformationMethod(PasswordTransformationMethod.getInstance());
1269            typefaceIndex = MONOSPACE;
1270        } else if (mEditor != null &&
1271                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1272                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1273            typefaceIndex = MONOSPACE;
1274        }
1275
1276        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1277
1278        if (shadowcolor != 0) {
1279            setShadowLayer(r, dx, dy, shadowcolor);
1280        }
1281
1282        if (maxlength >= 0) {
1283            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1284        } else {
1285            setFilters(NO_FILTERS);
1286        }
1287
1288        setText(text, bufferType);
1289        if (hint != null) setHint(hint);
1290
1291        /*
1292         * Views are not normally focusable unless specified to be.
1293         * However, TextViews that have input or movement methods *are*
1294         * focusable by default.
1295         */
1296        a = context.obtainStyledAttributes(
1297                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1298
1299        boolean focusable = mMovement != null || getKeyListener() != null;
1300        boolean clickable = focusable;
1301        boolean longClickable = focusable;
1302
1303        n = a.getIndexCount();
1304        for (int i = 0; i < n; i++) {
1305            int attr = a.getIndex(i);
1306
1307            switch (attr) {
1308            case com.android.internal.R.styleable.View_focusable:
1309                focusable = a.getBoolean(attr, focusable);
1310                break;
1311
1312            case com.android.internal.R.styleable.View_clickable:
1313                clickable = a.getBoolean(attr, clickable);
1314                break;
1315
1316            case com.android.internal.R.styleable.View_longClickable:
1317                longClickable = a.getBoolean(attr, longClickable);
1318                break;
1319            }
1320        }
1321        a.recycle();
1322
1323        setFocusable(focusable);
1324        setClickable(clickable);
1325        setLongClickable(longClickable);
1326
1327        if (mEditor != null) mEditor.prepareCursorControllers();
1328
1329        // If not explicitly specified this view is important for accessibility.
1330        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1331            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1332        }
1333    }
1334
1335    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1336        Typeface tf = null;
1337        if (familyName != null) {
1338            tf = Typeface.create(familyName, styleIndex);
1339            if (tf != null) {
1340                setTypeface(tf);
1341                return;
1342            }
1343        }
1344        switch (typefaceIndex) {
1345            case SANS:
1346                tf = Typeface.SANS_SERIF;
1347                break;
1348
1349            case SERIF:
1350                tf = Typeface.SERIF;
1351                break;
1352
1353            case MONOSPACE:
1354                tf = Typeface.MONOSPACE;
1355                break;
1356        }
1357
1358        setTypeface(tf, styleIndex);
1359    }
1360
1361    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1362        boolean hasRelativeDrawables = (start != null) || (end != null);
1363        if (hasRelativeDrawables) {
1364            Drawables dr = mDrawables;
1365            if (dr == null) {
1366                mDrawables = dr = new Drawables(getContext());
1367            }
1368            mDrawables.mOverride = true;
1369            final Rect compoundRect = dr.mCompoundRect;
1370            int[] state = getDrawableState();
1371            if (start != null) {
1372                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1373                start.setState(state);
1374                start.copyBounds(compoundRect);
1375                start.setCallback(this);
1376
1377                dr.mDrawableStart = start;
1378                dr.mDrawableSizeStart = compoundRect.width();
1379                dr.mDrawableHeightStart = compoundRect.height();
1380            } else {
1381                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1382            }
1383            if (end != null) {
1384                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1385                end.setState(state);
1386                end.copyBounds(compoundRect);
1387                end.setCallback(this);
1388
1389                dr.mDrawableEnd = end;
1390                dr.mDrawableSizeEnd = compoundRect.width();
1391                dr.mDrawableHeightEnd = compoundRect.height();
1392            } else {
1393                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1394            }
1395            resetResolvedDrawables();
1396            resolveDrawables();
1397        }
1398    }
1399
1400    @Override
1401    public void setEnabled(boolean enabled) {
1402        if (enabled == isEnabled()) {
1403            return;
1404        }
1405
1406        if (!enabled) {
1407            // Hide the soft input if the currently active TextView is disabled
1408            InputMethodManager imm = InputMethodManager.peekInstance();
1409            if (imm != null && imm.isActive(this)) {
1410                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1411            }
1412        }
1413
1414        super.setEnabled(enabled);
1415
1416        if (enabled) {
1417            // Make sure IME is updated with current editor info.
1418            InputMethodManager imm = InputMethodManager.peekInstance();
1419            if (imm != null) imm.restartInput(this);
1420        }
1421
1422        // Will change text color
1423        if (mEditor != null) {
1424            mEditor.invalidateTextDisplayList();
1425            mEditor.prepareCursorControllers();
1426
1427            // start or stop the cursor blinking as appropriate
1428            mEditor.makeBlink();
1429        }
1430    }
1431
1432    /**
1433     * Sets the typeface and style in which the text should be displayed,
1434     * and turns on the fake bold and italic bits in the Paint if the
1435     * Typeface that you provided does not have all the bits in the
1436     * style that you specified.
1437     *
1438     * @attr ref android.R.styleable#TextView_typeface
1439     * @attr ref android.R.styleable#TextView_textStyle
1440     */
1441    public void setTypeface(Typeface tf, int style) {
1442        if (style > 0) {
1443            if (tf == null) {
1444                tf = Typeface.defaultFromStyle(style);
1445            } else {
1446                tf = Typeface.create(tf, style);
1447            }
1448
1449            setTypeface(tf);
1450            // now compute what (if any) algorithmic styling is needed
1451            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1452            int need = style & ~typefaceStyle;
1453            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1454            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1455        } else {
1456            mTextPaint.setFakeBoldText(false);
1457            mTextPaint.setTextSkewX(0);
1458            setTypeface(tf);
1459        }
1460    }
1461
1462    /**
1463     * Subclasses override this to specify that they have a KeyListener
1464     * by default even if not specifically called for in the XML options.
1465     */
1466    protected boolean getDefaultEditable() {
1467        return false;
1468    }
1469
1470    /**
1471     * Subclasses override this to specify a default movement method.
1472     */
1473    protected MovementMethod getDefaultMovementMethod() {
1474        return null;
1475    }
1476
1477    /**
1478     * Return the text the TextView is displaying. If setText() was called with
1479     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1480     * the return value from this method to Spannable or Editable, respectively.
1481     *
1482     * Note: The content of the return value should not be modified. If you want
1483     * a modifiable one, you should make your own copy first.
1484     *
1485     * @attr ref android.R.styleable#TextView_text
1486     */
1487    @ViewDebug.CapturedViewProperty
1488    public CharSequence getText() {
1489        return mText;
1490    }
1491
1492    /**
1493     * Returns the length, in characters, of the text managed by this TextView
1494     */
1495    public int length() {
1496        return mText.length();
1497    }
1498
1499    /**
1500     * Return the text the TextView is displaying as an Editable object.  If
1501     * the text is not editable, null is returned.
1502     *
1503     * @see #getText
1504     */
1505    public Editable getEditableText() {
1506        return (mText instanceof Editable) ? (Editable)mText : null;
1507    }
1508
1509    /**
1510     * @return the height of one standard line in pixels.  Note that markup
1511     * within the text can cause individual lines to be taller or shorter
1512     * than this height, and the layout may contain additional first-
1513     * or last-line padding.
1514     */
1515    public int getLineHeight() {
1516        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1517    }
1518
1519    /**
1520     * @return the Layout that is currently being used to display the text.
1521     * This can be null if the text or width has recently changes.
1522     */
1523    public final Layout getLayout() {
1524        return mLayout;
1525    }
1526
1527    /**
1528     * @return the Layout that is currently being used to display the hint text.
1529     * This can be null.
1530     */
1531    final Layout getHintLayout() {
1532        return mHintLayout;
1533    }
1534
1535    /**
1536     * Retrieve the {@link android.content.UndoManager} that is currently associated
1537     * with this TextView.  By default there is no associated UndoManager, so null
1538     * is returned.  One can be associated with the TextView through
1539     * {@link #setUndoManager(android.content.UndoManager, String)}
1540     *
1541     * @hide
1542     */
1543    public final UndoManager getUndoManager() {
1544        return mEditor == null ? null : mEditor.mUndoManager;
1545    }
1546
1547    /**
1548     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1549     * done, all edit operations on the TextView will result in appropriate
1550     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1551     * stack.
1552     *
1553     * @param undoManager The {@link android.content.UndoManager} to associate with
1554     * this TextView, or null to clear any existing association.
1555     * @param tag String tag identifying this particular TextView owner in the
1556     * UndoManager.  This is used to keep the correct association with the
1557     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1558     *
1559     * @hide
1560     */
1561    public final void setUndoManager(UndoManager undoManager, String tag) {
1562        if (undoManager != null) {
1563            createEditorIfNeeded();
1564            mEditor.mUndoManager = undoManager;
1565            mEditor.mUndoOwner = undoManager.getOwner(tag, this);
1566            mEditor.mUndoInputFilter = new Editor.UndoInputFilter(mEditor);
1567            if (!(mText instanceof Editable)) {
1568                setText(mText, BufferType.EDITABLE);
1569            }
1570
1571            setFilters((Editable) mText, mFilters);
1572        } else if (mEditor != null) {
1573            // XXX need to destroy all associated state.
1574            mEditor.mUndoManager = null;
1575            mEditor.mUndoOwner = null;
1576            mEditor.mUndoInputFilter = null;
1577        }
1578    }
1579
1580    /**
1581     * @return the current key listener for this TextView.
1582     * This will frequently be null for non-EditText TextViews.
1583     *
1584     * @attr ref android.R.styleable#TextView_numeric
1585     * @attr ref android.R.styleable#TextView_digits
1586     * @attr ref android.R.styleable#TextView_phoneNumber
1587     * @attr ref android.R.styleable#TextView_inputMethod
1588     * @attr ref android.R.styleable#TextView_capitalize
1589     * @attr ref android.R.styleable#TextView_autoText
1590     */
1591    public final KeyListener getKeyListener() {
1592        return mEditor == null ? null : mEditor.mKeyListener;
1593    }
1594
1595    /**
1596     * Sets the key listener to be used with this TextView.  This can be null
1597     * to disallow user input.  Note that this method has significant and
1598     * subtle interactions with soft keyboards and other input method:
1599     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1600     * for important details.  Calling this method will replace the current
1601     * content type of the text view with the content type returned by the
1602     * key listener.
1603     * <p>
1604     * Be warned that if you want a TextView with a key listener or movement
1605     * method not to be focusable, or if you want a TextView without a
1606     * key listener or movement method to be focusable, you must call
1607     * {@link #setFocusable} again after calling this to get the focusability
1608     * back the way you want it.
1609     *
1610     * @attr ref android.R.styleable#TextView_numeric
1611     * @attr ref android.R.styleable#TextView_digits
1612     * @attr ref android.R.styleable#TextView_phoneNumber
1613     * @attr ref android.R.styleable#TextView_inputMethod
1614     * @attr ref android.R.styleable#TextView_capitalize
1615     * @attr ref android.R.styleable#TextView_autoText
1616     */
1617    public void setKeyListener(KeyListener input) {
1618        setKeyListenerOnly(input);
1619        fixFocusableAndClickableSettings();
1620
1621        if (input != null) {
1622            createEditorIfNeeded();
1623            try {
1624                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1625            } catch (IncompatibleClassChangeError e) {
1626                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1627            }
1628            // Change inputType, without affecting transformation.
1629            // No need to applySingleLine since mSingleLine is unchanged.
1630            setInputTypeSingleLine(mSingleLine);
1631        } else {
1632            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1633        }
1634
1635        InputMethodManager imm = InputMethodManager.peekInstance();
1636        if (imm != null) imm.restartInput(this);
1637    }
1638
1639    private void setKeyListenerOnly(KeyListener input) {
1640        if (mEditor == null && input == null) return; // null is the default value
1641
1642        createEditorIfNeeded();
1643        if (mEditor.mKeyListener != input) {
1644            mEditor.mKeyListener = input;
1645            if (input != null && !(mText instanceof Editable)) {
1646                setText(mText);
1647            }
1648
1649            setFilters((Editable) mText, mFilters);
1650        }
1651    }
1652
1653    /**
1654     * @return the movement method being used for this TextView.
1655     * This will frequently be null for non-EditText TextViews.
1656     */
1657    public final MovementMethod getMovementMethod() {
1658        return mMovement;
1659    }
1660
1661    /**
1662     * Sets the movement method (arrow key handler) to be used for
1663     * this TextView.  This can be null to disallow using the arrow keys
1664     * to move the cursor or scroll the view.
1665     * <p>
1666     * Be warned that if you want a TextView with a key listener or movement
1667     * method not to be focusable, or if you want a TextView without a
1668     * key listener or movement method to be focusable, you must call
1669     * {@link #setFocusable} again after calling this to get the focusability
1670     * back the way you want it.
1671     */
1672    public final void setMovementMethod(MovementMethod movement) {
1673        if (mMovement != movement) {
1674            mMovement = movement;
1675
1676            if (movement != null && !(mText instanceof Spannable)) {
1677                setText(mText);
1678            }
1679
1680            fixFocusableAndClickableSettings();
1681
1682            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1683            // mMovement
1684            if (mEditor != null) mEditor.prepareCursorControllers();
1685        }
1686    }
1687
1688    private void fixFocusableAndClickableSettings() {
1689        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1690            setFocusable(true);
1691            setClickable(true);
1692            setLongClickable(true);
1693        } else {
1694            setFocusable(false);
1695            setClickable(false);
1696            setLongClickable(false);
1697        }
1698    }
1699
1700    /**
1701     * @return the current transformation method for this TextView.
1702     * This will frequently be null except for single-line and password
1703     * fields.
1704     *
1705     * @attr ref android.R.styleable#TextView_password
1706     * @attr ref android.R.styleable#TextView_singleLine
1707     */
1708    public final TransformationMethod getTransformationMethod() {
1709        return mTransformation;
1710    }
1711
1712    /**
1713     * Sets the transformation that is applied to the text that this
1714     * TextView is displaying.
1715     *
1716     * @attr ref android.R.styleable#TextView_password
1717     * @attr ref android.R.styleable#TextView_singleLine
1718     */
1719    public final void setTransformationMethod(TransformationMethod method) {
1720        if (method == mTransformation) {
1721            // Avoid the setText() below if the transformation is
1722            // the same.
1723            return;
1724        }
1725        if (mTransformation != null) {
1726            if (mText instanceof Spannable) {
1727                ((Spannable) mText).removeSpan(mTransformation);
1728            }
1729        }
1730
1731        mTransformation = method;
1732
1733        if (method instanceof TransformationMethod2) {
1734            TransformationMethod2 method2 = (TransformationMethod2) method;
1735            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1736            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1737        } else {
1738            mAllowTransformationLengthChange = false;
1739        }
1740
1741        setText(mText);
1742
1743        if (hasPasswordTransformationMethod()) {
1744            notifyViewAccessibilityStateChangedIfNeeded(
1745                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1746        }
1747    }
1748
1749    /**
1750     * Returns the top padding of the view, plus space for the top
1751     * Drawable if any.
1752     */
1753    public int getCompoundPaddingTop() {
1754        final Drawables dr = mDrawables;
1755        if (dr == null || dr.mDrawableTop == null) {
1756            return mPaddingTop;
1757        } else {
1758            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1759        }
1760    }
1761
1762    /**
1763     * Returns the bottom padding of the view, plus space for the bottom
1764     * Drawable if any.
1765     */
1766    public int getCompoundPaddingBottom() {
1767        final Drawables dr = mDrawables;
1768        if (dr == null || dr.mDrawableBottom == null) {
1769            return mPaddingBottom;
1770        } else {
1771            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1772        }
1773    }
1774
1775    /**
1776     * Returns the left padding of the view, plus space for the left
1777     * Drawable if any.
1778     */
1779    public int getCompoundPaddingLeft() {
1780        final Drawables dr = mDrawables;
1781        if (dr == null || dr.mDrawableLeft == null) {
1782            return mPaddingLeft;
1783        } else {
1784            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1785        }
1786    }
1787
1788    /**
1789     * Returns the right padding of the view, plus space for the right
1790     * Drawable if any.
1791     */
1792    public int getCompoundPaddingRight() {
1793        final Drawables dr = mDrawables;
1794        if (dr == null || dr.mDrawableRight == null) {
1795            return mPaddingRight;
1796        } else {
1797            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1798        }
1799    }
1800
1801    /**
1802     * Returns the start padding of the view, plus space for the start
1803     * Drawable if any.
1804     */
1805    public int getCompoundPaddingStart() {
1806        resolveDrawables();
1807        switch(getLayoutDirection()) {
1808            default:
1809            case LAYOUT_DIRECTION_LTR:
1810                return getCompoundPaddingLeft();
1811            case LAYOUT_DIRECTION_RTL:
1812                return getCompoundPaddingRight();
1813        }
1814    }
1815
1816    /**
1817     * Returns the end padding of the view, plus space for the end
1818     * Drawable if any.
1819     */
1820    public int getCompoundPaddingEnd() {
1821        resolveDrawables();
1822        switch(getLayoutDirection()) {
1823            default:
1824            case LAYOUT_DIRECTION_LTR:
1825                return getCompoundPaddingRight();
1826            case LAYOUT_DIRECTION_RTL:
1827                return getCompoundPaddingLeft();
1828        }
1829    }
1830
1831    /**
1832     * Returns the extended top padding of the view, including both the
1833     * top Drawable if any and any extra space to keep more than maxLines
1834     * of text from showing.  It is only valid to call this after measuring.
1835     */
1836    public int getExtendedPaddingTop() {
1837        if (mMaxMode != LINES) {
1838            return getCompoundPaddingTop();
1839        }
1840
1841        if (mLayout.getLineCount() <= mMaximum) {
1842            return getCompoundPaddingTop();
1843        }
1844
1845        int top = getCompoundPaddingTop();
1846        int bottom = getCompoundPaddingBottom();
1847        int viewht = getHeight() - top - bottom;
1848        int layoutht = mLayout.getLineTop(mMaximum);
1849
1850        if (layoutht >= viewht) {
1851            return top;
1852        }
1853
1854        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1855        if (gravity == Gravity.TOP) {
1856            return top;
1857        } else if (gravity == Gravity.BOTTOM) {
1858            return top + viewht - layoutht;
1859        } else { // (gravity == Gravity.CENTER_VERTICAL)
1860            return top + (viewht - layoutht) / 2;
1861        }
1862    }
1863
1864    /**
1865     * Returns the extended bottom padding of the view, including both the
1866     * bottom Drawable if any and any extra space to keep more than maxLines
1867     * of text from showing.  It is only valid to call this after measuring.
1868     */
1869    public int getExtendedPaddingBottom() {
1870        if (mMaxMode != LINES) {
1871            return getCompoundPaddingBottom();
1872        }
1873
1874        if (mLayout.getLineCount() <= mMaximum) {
1875            return getCompoundPaddingBottom();
1876        }
1877
1878        int top = getCompoundPaddingTop();
1879        int bottom = getCompoundPaddingBottom();
1880        int viewht = getHeight() - top - bottom;
1881        int layoutht = mLayout.getLineTop(mMaximum);
1882
1883        if (layoutht >= viewht) {
1884            return bottom;
1885        }
1886
1887        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1888        if (gravity == Gravity.TOP) {
1889            return bottom + viewht - layoutht;
1890        } else if (gravity == Gravity.BOTTOM) {
1891            return bottom;
1892        } else { // (gravity == Gravity.CENTER_VERTICAL)
1893            return bottom + (viewht - layoutht) / 2;
1894        }
1895    }
1896
1897    /**
1898     * Returns the total left padding of the view, including the left
1899     * Drawable if any.
1900     */
1901    public int getTotalPaddingLeft() {
1902        return getCompoundPaddingLeft();
1903    }
1904
1905    /**
1906     * Returns the total right padding of the view, including the right
1907     * Drawable if any.
1908     */
1909    public int getTotalPaddingRight() {
1910        return getCompoundPaddingRight();
1911    }
1912
1913    /**
1914     * Returns the total start padding of the view, including the start
1915     * Drawable if any.
1916     */
1917    public int getTotalPaddingStart() {
1918        return getCompoundPaddingStart();
1919    }
1920
1921    /**
1922     * Returns the total end padding of the view, including the end
1923     * Drawable if any.
1924     */
1925    public int getTotalPaddingEnd() {
1926        return getCompoundPaddingEnd();
1927    }
1928
1929    /**
1930     * Returns the total top padding of the view, including the top
1931     * Drawable if any, the extra space to keep more than maxLines
1932     * from showing, and the vertical offset for gravity, if any.
1933     */
1934    public int getTotalPaddingTop() {
1935        return getExtendedPaddingTop() + getVerticalOffset(true);
1936    }
1937
1938    /**
1939     * Returns the total bottom padding of the view, including the bottom
1940     * Drawable if any, the extra space to keep more than maxLines
1941     * from showing, and the vertical offset for gravity, if any.
1942     */
1943    public int getTotalPaddingBottom() {
1944        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1945    }
1946
1947    /**
1948     * Sets the Drawables (if any) to appear to the left of, above,
1949     * to the right of, and below the text.  Use null if you do not
1950     * want a Drawable there.  The Drawables must already have had
1951     * {@link Drawable#setBounds} called.
1952     *
1953     * @attr ref android.R.styleable#TextView_drawableLeft
1954     * @attr ref android.R.styleable#TextView_drawableTop
1955     * @attr ref android.R.styleable#TextView_drawableRight
1956     * @attr ref android.R.styleable#TextView_drawableBottom
1957     */
1958    public void setCompoundDrawables(Drawable left, Drawable top,
1959                                     Drawable right, Drawable bottom) {
1960        Drawables dr = mDrawables;
1961
1962        final boolean drawables = left != null || top != null
1963                || right != null || bottom != null;
1964
1965        if (!drawables) {
1966            // Clearing drawables...  can we free the data structure?
1967            if (dr != null) {
1968                if (dr.mDrawablePadding == 0) {
1969                    mDrawables = null;
1970                } else {
1971                    // We need to retain the last set padding, so just clear
1972                    // out all of the fields in the existing structure.
1973                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1974                    dr.mDrawableLeft = null;
1975                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1976                    dr.mDrawableTop = null;
1977                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1978                    dr.mDrawableRight = null;
1979                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1980                    dr.mDrawableBottom = null;
1981                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1982                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1983                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1984                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1985                }
1986            }
1987        } else {
1988            if (dr == null) {
1989                mDrawables = dr = new Drawables(getContext());
1990            }
1991
1992            mDrawables.mOverride = false;
1993
1994            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1995                dr.mDrawableLeft.setCallback(null);
1996            }
1997            dr.mDrawableLeft = left;
1998
1999            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2000                dr.mDrawableTop.setCallback(null);
2001            }
2002            dr.mDrawableTop = top;
2003
2004            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
2005                dr.mDrawableRight.setCallback(null);
2006            }
2007            dr.mDrawableRight = right;
2008
2009            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2010                dr.mDrawableBottom.setCallback(null);
2011            }
2012            dr.mDrawableBottom = bottom;
2013
2014            final Rect compoundRect = dr.mCompoundRect;
2015            int[] state;
2016
2017            state = getDrawableState();
2018
2019            if (left != null) {
2020                left.setState(state);
2021                left.copyBounds(compoundRect);
2022                left.setCallback(this);
2023                dr.mDrawableSizeLeft = compoundRect.width();
2024                dr.mDrawableHeightLeft = compoundRect.height();
2025            } else {
2026                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2027            }
2028
2029            if (right != null) {
2030                right.setState(state);
2031                right.copyBounds(compoundRect);
2032                right.setCallback(this);
2033                dr.mDrawableSizeRight = compoundRect.width();
2034                dr.mDrawableHeightRight = compoundRect.height();
2035            } else {
2036                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2037            }
2038
2039            if (top != null) {
2040                top.setState(state);
2041                top.copyBounds(compoundRect);
2042                top.setCallback(this);
2043                dr.mDrawableSizeTop = compoundRect.height();
2044                dr.mDrawableWidthTop = compoundRect.width();
2045            } else {
2046                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2047            }
2048
2049            if (bottom != null) {
2050                bottom.setState(state);
2051                bottom.copyBounds(compoundRect);
2052                bottom.setCallback(this);
2053                dr.mDrawableSizeBottom = compoundRect.height();
2054                dr.mDrawableWidthBottom = compoundRect.width();
2055            } else {
2056                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2057            }
2058        }
2059
2060        // Save initial left/right drawables
2061        if (dr != null) {
2062            dr.mDrawableLeftInitial = left;
2063            dr.mDrawableRightInitial = right;
2064        }
2065
2066        resetResolvedDrawables();
2067        resolveDrawables();
2068        invalidate();
2069        requestLayout();
2070    }
2071
2072    /**
2073     * Sets the Drawables (if any) to appear to the left of, above,
2074     * to the right of, and below the text.  Use 0 if you do not
2075     * want a Drawable there. The Drawables' bounds will be set to
2076     * their intrinsic bounds.
2077     *
2078     * @param left Resource identifier of the left Drawable.
2079     * @param top Resource identifier of the top Drawable.
2080     * @param right Resource identifier of the right Drawable.
2081     * @param bottom Resource identifier of the bottom Drawable.
2082     *
2083     * @attr ref android.R.styleable#TextView_drawableLeft
2084     * @attr ref android.R.styleable#TextView_drawableTop
2085     * @attr ref android.R.styleable#TextView_drawableRight
2086     * @attr ref android.R.styleable#TextView_drawableBottom
2087     */
2088    @android.view.RemotableViewMethod
2089    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
2090        final Context context = getContext();
2091        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2092                top != 0 ? context.getDrawable(top) : null,
2093                right != 0 ? context.getDrawable(right) : null,
2094                bottom != 0 ? context.getDrawable(bottom) : null);
2095    }
2096
2097    /**
2098     * Sets the Drawables (if any) to appear to the left of, above,
2099     * to the right of, and below the text.  Use null if you do not
2100     * want a Drawable there. The Drawables' bounds will be set to
2101     * their intrinsic bounds.
2102     *
2103     * @attr ref android.R.styleable#TextView_drawableLeft
2104     * @attr ref android.R.styleable#TextView_drawableTop
2105     * @attr ref android.R.styleable#TextView_drawableRight
2106     * @attr ref android.R.styleable#TextView_drawableBottom
2107     */
2108    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
2109            Drawable right, Drawable bottom) {
2110
2111        if (left != null) {
2112            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2113        }
2114        if (right != null) {
2115            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2116        }
2117        if (top != null) {
2118            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2119        }
2120        if (bottom != null) {
2121            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2122        }
2123        setCompoundDrawables(left, top, right, bottom);
2124    }
2125
2126    /**
2127     * Sets the Drawables (if any) to appear to the start of, above,
2128     * to the end of, and below the text.  Use null if you do not
2129     * want a Drawable there.  The Drawables must already have had
2130     * {@link Drawable#setBounds} called.
2131     *
2132     * @attr ref android.R.styleable#TextView_drawableStart
2133     * @attr ref android.R.styleable#TextView_drawableTop
2134     * @attr ref android.R.styleable#TextView_drawableEnd
2135     * @attr ref android.R.styleable#TextView_drawableBottom
2136     */
2137    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
2138                                     Drawable end, Drawable bottom) {
2139        Drawables dr = mDrawables;
2140
2141        final boolean drawables = start != null || top != null
2142                || end != null || bottom != null;
2143
2144        if (!drawables) {
2145            // Clearing drawables...  can we free the data structure?
2146            if (dr != null) {
2147                if (dr.mDrawablePadding == 0) {
2148                    mDrawables = null;
2149                } else {
2150                    // We need to retain the last set padding, so just clear
2151                    // out all of the fields in the existing structure.
2152                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2153                    dr.mDrawableStart = null;
2154                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
2155                    dr.mDrawableTop = null;
2156                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2157                    dr.mDrawableEnd = null;
2158                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
2159                    dr.mDrawableBottom = null;
2160                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2161                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2162                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2163                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2164                }
2165            }
2166        } else {
2167            if (dr == null) {
2168                mDrawables = dr = new Drawables(getContext());
2169            }
2170
2171            mDrawables.mOverride = true;
2172
2173            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2174                dr.mDrawableStart.setCallback(null);
2175            }
2176            dr.mDrawableStart = start;
2177
2178            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2179                dr.mDrawableTop.setCallback(null);
2180            }
2181            dr.mDrawableTop = top;
2182
2183            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2184                dr.mDrawableEnd.setCallback(null);
2185            }
2186            dr.mDrawableEnd = end;
2187
2188            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2189                dr.mDrawableBottom.setCallback(null);
2190            }
2191            dr.mDrawableBottom = bottom;
2192
2193            final Rect compoundRect = dr.mCompoundRect;
2194            int[] state;
2195
2196            state = getDrawableState();
2197
2198            if (start != null) {
2199                start.setState(state);
2200                start.copyBounds(compoundRect);
2201                start.setCallback(this);
2202                dr.mDrawableSizeStart = compoundRect.width();
2203                dr.mDrawableHeightStart = compoundRect.height();
2204            } else {
2205                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2206            }
2207
2208            if (end != null) {
2209                end.setState(state);
2210                end.copyBounds(compoundRect);
2211                end.setCallback(this);
2212                dr.mDrawableSizeEnd = compoundRect.width();
2213                dr.mDrawableHeightEnd = compoundRect.height();
2214            } else {
2215                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2216            }
2217
2218            if (top != null) {
2219                top.setState(state);
2220                top.copyBounds(compoundRect);
2221                top.setCallback(this);
2222                dr.mDrawableSizeTop = compoundRect.height();
2223                dr.mDrawableWidthTop = compoundRect.width();
2224            } else {
2225                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2226            }
2227
2228            if (bottom != null) {
2229                bottom.setState(state);
2230                bottom.copyBounds(compoundRect);
2231                bottom.setCallback(this);
2232                dr.mDrawableSizeBottom = compoundRect.height();
2233                dr.mDrawableWidthBottom = compoundRect.width();
2234            } else {
2235                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2236            }
2237        }
2238
2239        resetResolvedDrawables();
2240        resolveDrawables();
2241        invalidate();
2242        requestLayout();
2243    }
2244
2245    /**
2246     * Sets the Drawables (if any) to appear to the start of, above,
2247     * to the end of, and below the text.  Use 0 if you do not
2248     * want a Drawable there. The Drawables' bounds will be set to
2249     * their intrinsic bounds.
2250     *
2251     * @param start Resource identifier of the start Drawable.
2252     * @param top Resource identifier of the top Drawable.
2253     * @param end Resource identifier of the end Drawable.
2254     * @param bottom Resource identifier of the bottom Drawable.
2255     *
2256     * @attr ref android.R.styleable#TextView_drawableStart
2257     * @attr ref android.R.styleable#TextView_drawableTop
2258     * @attr ref android.R.styleable#TextView_drawableEnd
2259     * @attr ref android.R.styleable#TextView_drawableBottom
2260     */
2261    @android.view.RemotableViewMethod
2262    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
2263            int bottom) {
2264        final Context context = getContext();
2265        setCompoundDrawablesRelativeWithIntrinsicBounds(
2266                start != 0 ? context.getDrawable(start) : null,
2267                top != 0 ? context.getDrawable(top) : null,
2268                end != 0 ? context.getDrawable(end) : null,
2269                bottom != 0 ? context.getDrawable(bottom) : null);
2270    }
2271
2272    /**
2273     * Sets the Drawables (if any) to appear to the start of, above,
2274     * to the end of, and below the text.  Use null if you do not
2275     * want a Drawable there. The Drawables' bounds will be set to
2276     * their intrinsic bounds.
2277     *
2278     * @attr ref android.R.styleable#TextView_drawableStart
2279     * @attr ref android.R.styleable#TextView_drawableTop
2280     * @attr ref android.R.styleable#TextView_drawableEnd
2281     * @attr ref android.R.styleable#TextView_drawableBottom
2282     */
2283    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2284            Drawable end, Drawable bottom) {
2285
2286        if (start != null) {
2287            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2288        }
2289        if (end != null) {
2290            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2291        }
2292        if (top != null) {
2293            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2294        }
2295        if (bottom != null) {
2296            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2297        }
2298        setCompoundDrawablesRelative(start, top, end, bottom);
2299    }
2300
2301    /**
2302     * Returns drawables for the left, top, right, and bottom borders.
2303     *
2304     * @attr ref android.R.styleable#TextView_drawableLeft
2305     * @attr ref android.R.styleable#TextView_drawableTop
2306     * @attr ref android.R.styleable#TextView_drawableRight
2307     * @attr ref android.R.styleable#TextView_drawableBottom
2308     */
2309    public Drawable[] getCompoundDrawables() {
2310        final Drawables dr = mDrawables;
2311        if (dr != null) {
2312            return new Drawable[] {
2313                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2314            };
2315        } else {
2316            return new Drawable[] { null, null, null, null };
2317        }
2318    }
2319
2320    /**
2321     * Returns drawables for the start, top, end, and bottom borders.
2322     *
2323     * @attr ref android.R.styleable#TextView_drawableStart
2324     * @attr ref android.R.styleable#TextView_drawableTop
2325     * @attr ref android.R.styleable#TextView_drawableEnd
2326     * @attr ref android.R.styleable#TextView_drawableBottom
2327     */
2328    public Drawable[] getCompoundDrawablesRelative() {
2329        final Drawables dr = mDrawables;
2330        if (dr != null) {
2331            return new Drawable[] {
2332                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2333            };
2334        } else {
2335            return new Drawable[] { null, null, null, null };
2336        }
2337    }
2338
2339    /**
2340     * Sets the size of the padding between the compound drawables and
2341     * the text.
2342     *
2343     * @attr ref android.R.styleable#TextView_drawablePadding
2344     */
2345    @android.view.RemotableViewMethod
2346    public void setCompoundDrawablePadding(int pad) {
2347        Drawables dr = mDrawables;
2348        if (pad == 0) {
2349            if (dr != null) {
2350                dr.mDrawablePadding = pad;
2351            }
2352        } else {
2353            if (dr == null) {
2354                mDrawables = dr = new Drawables(getContext());
2355            }
2356            dr.mDrawablePadding = pad;
2357        }
2358
2359        invalidate();
2360        requestLayout();
2361    }
2362
2363    /**
2364     * Returns the padding between the compound drawables and the text.
2365     *
2366     * @attr ref android.R.styleable#TextView_drawablePadding
2367     */
2368    public int getCompoundDrawablePadding() {
2369        final Drawables dr = mDrawables;
2370        return dr != null ? dr.mDrawablePadding : 0;
2371    }
2372
2373    @Override
2374    public void setPadding(int left, int top, int right, int bottom) {
2375        if (left != mPaddingLeft ||
2376            right != mPaddingRight ||
2377            top != mPaddingTop ||
2378            bottom != mPaddingBottom) {
2379            nullLayouts();
2380        }
2381
2382        // the super call will requestLayout()
2383        super.setPadding(left, top, right, bottom);
2384        invalidate();
2385    }
2386
2387    @Override
2388    public void setPaddingRelative(int start, int top, int end, int bottom) {
2389        if (start != getPaddingStart() ||
2390            end != getPaddingEnd() ||
2391            top != mPaddingTop ||
2392            bottom != mPaddingBottom) {
2393            nullLayouts();
2394        }
2395
2396        // the super call will requestLayout()
2397        super.setPaddingRelative(start, top, end, bottom);
2398        invalidate();
2399    }
2400
2401    /**
2402     * Gets the autolink mask of the text.  See {@link
2403     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2404     * possible values.
2405     *
2406     * @attr ref android.R.styleable#TextView_autoLink
2407     */
2408    public final int getAutoLinkMask() {
2409        return mAutoLinkMask;
2410    }
2411
2412    /**
2413     * Sets the text color, size, style, hint color, and highlight color
2414     * from the specified TextAppearance resource.
2415     */
2416    public void setTextAppearance(Context context, int resid) {
2417        TypedArray appearance =
2418            context.obtainStyledAttributes(resid,
2419                                           com.android.internal.R.styleable.TextAppearance);
2420
2421        int color;
2422        ColorStateList colors;
2423        int ts;
2424
2425        color = appearance.getColor(
2426                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2427        if (color != 0) {
2428            setHighlightColor(color);
2429        }
2430
2431        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2432                                              TextAppearance_textColor);
2433        if (colors != null) {
2434            setTextColor(colors);
2435        }
2436
2437        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2438                                              TextAppearance_textSize, 0);
2439        if (ts != 0) {
2440            setRawTextSize(ts);
2441        }
2442
2443        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2444                                              TextAppearance_textColorHint);
2445        if (colors != null) {
2446            setHintTextColor(colors);
2447        }
2448
2449        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2450                                              TextAppearance_textColorLink);
2451        if (colors != null) {
2452            setLinkTextColor(colors);
2453        }
2454
2455        String familyName;
2456        int typefaceIndex, styleIndex;
2457
2458        familyName = appearance.getString(com.android.internal.R.styleable.
2459                                          TextAppearance_fontFamily);
2460        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2461                                          TextAppearance_typeface, -1);
2462        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2463                                       TextAppearance_textStyle, -1);
2464
2465        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2466
2467        final int shadowcolor = appearance.getInt(
2468                com.android.internal.R.styleable.TextAppearance_shadowColor, 0);
2469        if (shadowcolor != 0) {
2470            final float dx = appearance.getFloat(
2471                    com.android.internal.R.styleable.TextAppearance_shadowDx, 0);
2472            final float dy = appearance.getFloat(
2473                    com.android.internal.R.styleable.TextAppearance_shadowDy, 0);
2474            final float r = appearance.getFloat(
2475                    com.android.internal.R.styleable.TextAppearance_shadowRadius, 0);
2476
2477            setShadowLayer(r, dx, dy, shadowcolor);
2478        }
2479
2480        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2481                false)) {
2482            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2483        }
2484
2485        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_elegantTextHeight)) {
2486            setElegantTextHeight(appearance.getBoolean(
2487                com.android.internal.R.styleable.TextAppearance_elegantTextHeight, false));
2488        }
2489
2490        appearance.recycle();
2491    }
2492
2493    /**
2494     * Get the default {@link Locale} of the text in this TextView.
2495     * @return the default {@link Locale} of the text in this TextView.
2496     */
2497    public Locale getTextLocale() {
2498        return mTextPaint.getTextLocale();
2499    }
2500
2501    /**
2502     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2503     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2504     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2505     *
2506     * @param locale the {@link Locale} for drawing text, must not be null.
2507     *
2508     * @see Paint#setTextLocale
2509     */
2510    public void setTextLocale(Locale locale) {
2511        mTextPaint.setTextLocale(locale);
2512    }
2513
2514    /**
2515     * @return the size (in pixels) of the default text size in this TextView.
2516     */
2517    @ViewDebug.ExportedProperty(category = "text")
2518    public float getTextSize() {
2519        return mTextPaint.getTextSize();
2520    }
2521
2522    /**
2523     * @return the size (in scaled pixels) of thee default text size in this TextView.
2524     * @hide
2525     */
2526    @ViewDebug.ExportedProperty(category = "text")
2527    public float getScaledTextSize() {
2528        return mTextPaint.getTextSize() / mTextPaint.density;
2529    }
2530
2531    /** @hide */
2532    @ViewDebug.ExportedProperty(category = "text", mapping = {
2533            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2534            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2535            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2536            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2537    })
2538    public int getTypefaceStyle() {
2539        return mTextPaint.getTypeface().getStyle();
2540    }
2541
2542    /**
2543     * Set the default text size to the given value, interpreted as "scaled
2544     * pixel" units.  This size is adjusted based on the current density and
2545     * user font size preference.
2546     *
2547     * @param size The scaled pixel size.
2548     *
2549     * @attr ref android.R.styleable#TextView_textSize
2550     */
2551    @android.view.RemotableViewMethod
2552    public void setTextSize(float size) {
2553        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2554    }
2555
2556    /**
2557     * Set the default text size to a given unit and value.  See {@link
2558     * TypedValue} for the possible dimension units.
2559     *
2560     * @param unit The desired dimension unit.
2561     * @param size The desired size in the given units.
2562     *
2563     * @attr ref android.R.styleable#TextView_textSize
2564     */
2565    public void setTextSize(int unit, float size) {
2566        Context c = getContext();
2567        Resources r;
2568
2569        if (c == null)
2570            r = Resources.getSystem();
2571        else
2572            r = c.getResources();
2573
2574        setRawTextSize(TypedValue.applyDimension(
2575                unit, size, r.getDisplayMetrics()));
2576    }
2577
2578    private void setRawTextSize(float size) {
2579        if (size != mTextPaint.getTextSize()) {
2580            mTextPaint.setTextSize(size);
2581
2582            if (mLayout != null) {
2583                nullLayouts();
2584                requestLayout();
2585                invalidate();
2586            }
2587        }
2588    }
2589
2590    /**
2591     * @return the extent by which text is currently being stretched
2592     * horizontally.  This will usually be 1.
2593     */
2594    public float getTextScaleX() {
2595        return mTextPaint.getTextScaleX();
2596    }
2597
2598    /**
2599     * Sets the extent by which text should be stretched horizontally.
2600     *
2601     * @attr ref android.R.styleable#TextView_textScaleX
2602     */
2603    @android.view.RemotableViewMethod
2604    public void setTextScaleX(float size) {
2605        if (size != mTextPaint.getTextScaleX()) {
2606            mUserSetTextScaleX = true;
2607            mTextPaint.setTextScaleX(size);
2608
2609            if (mLayout != null) {
2610                nullLayouts();
2611                requestLayout();
2612                invalidate();
2613            }
2614        }
2615    }
2616
2617    /**
2618     * Sets the typeface and style in which the text should be displayed.
2619     * Note that not all Typeface families actually have bold and italic
2620     * variants, so you may need to use
2621     * {@link #setTypeface(Typeface, int)} to get the appearance
2622     * that you actually want.
2623     *
2624     * @see #getTypeface()
2625     *
2626     * @attr ref android.R.styleable#TextView_fontFamily
2627     * @attr ref android.R.styleable#TextView_typeface
2628     * @attr ref android.R.styleable#TextView_textStyle
2629     */
2630    public void setTypeface(Typeface tf) {
2631        if (mTextPaint.getTypeface() != tf) {
2632            mTextPaint.setTypeface(tf);
2633
2634            if (mLayout != null) {
2635                nullLayouts();
2636                requestLayout();
2637                invalidate();
2638            }
2639        }
2640    }
2641
2642    /**
2643     * @return the current typeface and style in which the text is being
2644     * displayed.
2645     *
2646     * @see #setTypeface(Typeface)
2647     *
2648     * @attr ref android.R.styleable#TextView_fontFamily
2649     * @attr ref android.R.styleable#TextView_typeface
2650     * @attr ref android.R.styleable#TextView_textStyle
2651     */
2652    public Typeface getTypeface() {
2653        return mTextPaint.getTypeface();
2654    }
2655
2656    /**
2657     * Set the TextView's elegant height metrics flag. This setting selects font
2658     * variants that have not been compacted to fit Latin-based vertical
2659     * metrics, and also increases top and bottom bounds to provide more space.
2660     *
2661     * @param elegant set the paint's elegant metrics flag.
2662     *
2663     * @attr ref android.R.styleable#TextView_elegantTextHeight
2664     */
2665    public void setElegantTextHeight(boolean elegant) {
2666        mTextPaint.setElegantTextHeight(elegant);
2667    }
2668
2669    /**
2670     * Sets the text color for all the states (normal, selected,
2671     * focused) to be this color.
2672     *
2673     * @see #setTextColor(ColorStateList)
2674     * @see #getTextColors()
2675     *
2676     * @attr ref android.R.styleable#TextView_textColor
2677     */
2678    @android.view.RemotableViewMethod
2679    public void setTextColor(int color) {
2680        mTextColor = ColorStateList.valueOf(color);
2681        updateTextColors();
2682    }
2683
2684    /**
2685     * Sets the text color.
2686     *
2687     * @see #setTextColor(int)
2688     * @see #getTextColors()
2689     * @see #setHintTextColor(ColorStateList)
2690     * @see #setLinkTextColor(ColorStateList)
2691     *
2692     * @attr ref android.R.styleable#TextView_textColor
2693     */
2694    public void setTextColor(ColorStateList colors) {
2695        if (colors == null) {
2696            throw new NullPointerException();
2697        }
2698
2699        mTextColor = colors;
2700        updateTextColors();
2701    }
2702
2703    /**
2704     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2705     *
2706     * @see #setTextColor(ColorStateList)
2707     * @see #setTextColor(int)
2708     *
2709     * @attr ref android.R.styleable#TextView_textColor
2710     */
2711    public final ColorStateList getTextColors() {
2712        return mTextColor;
2713    }
2714
2715    /**
2716     * <p>Return the current color selected for normal text.</p>
2717     *
2718     * @return Returns the current text color.
2719     */
2720    public final int getCurrentTextColor() {
2721        return mCurTextColor;
2722    }
2723
2724    /**
2725     * Sets the color used to display the selection highlight.
2726     *
2727     * @attr ref android.R.styleable#TextView_textColorHighlight
2728     */
2729    @android.view.RemotableViewMethod
2730    public void setHighlightColor(int color) {
2731        if (mHighlightColor != color) {
2732            mHighlightColor = color;
2733            invalidate();
2734        }
2735    }
2736
2737    /**
2738     * @return the color used to display the selection highlight
2739     *
2740     * @see #setHighlightColor(int)
2741     *
2742     * @attr ref android.R.styleable#TextView_textColorHighlight
2743     */
2744    public int getHighlightColor() {
2745        return mHighlightColor;
2746    }
2747
2748    /**
2749     * Sets whether the soft input method will be made visible when this
2750     * TextView gets focused. The default is true.
2751     */
2752    @android.view.RemotableViewMethod
2753    public final void setShowSoftInputOnFocus(boolean show) {
2754        createEditorIfNeeded();
2755        mEditor.mShowSoftInputOnFocus = show;
2756    }
2757
2758    /**
2759     * Returns whether the soft input method will be made visible when this
2760     * TextView gets focused. The default is true.
2761     */
2762    public final boolean getShowSoftInputOnFocus() {
2763        // When there is no Editor, return default true value
2764        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2765    }
2766
2767    /**
2768     * Gives the text a shadow of the specified radius and color, the specified
2769     * distance from its normal position.
2770     *
2771     * @attr ref android.R.styleable#TextView_shadowColor
2772     * @attr ref android.R.styleable#TextView_shadowDx
2773     * @attr ref android.R.styleable#TextView_shadowDy
2774     * @attr ref android.R.styleable#TextView_shadowRadius
2775     */
2776    public void setShadowLayer(float radius, float dx, float dy, int color) {
2777        mTextPaint.setShadowLayer(radius, dx, dy, color);
2778
2779        mShadowRadius = radius;
2780        mShadowDx = dx;
2781        mShadowDy = dy;
2782        mShadowColor = color;
2783
2784        // Will change text clip region
2785        if (mEditor != null) mEditor.invalidateTextDisplayList();
2786        invalidate();
2787    }
2788
2789    /**
2790     * Gets the radius of the shadow layer.
2791     *
2792     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2793     *
2794     * @see #setShadowLayer(float, float, float, int)
2795     *
2796     * @attr ref android.R.styleable#TextView_shadowRadius
2797     */
2798    public float getShadowRadius() {
2799        return mShadowRadius;
2800    }
2801
2802    /**
2803     * @return the horizontal offset of the shadow layer
2804     *
2805     * @see #setShadowLayer(float, float, float, int)
2806     *
2807     * @attr ref android.R.styleable#TextView_shadowDx
2808     */
2809    public float getShadowDx() {
2810        return mShadowDx;
2811    }
2812
2813    /**
2814     * @return the vertical offset of the shadow layer
2815     *
2816     * @see #setShadowLayer(float, float, float, int)
2817     *
2818     * @attr ref android.R.styleable#TextView_shadowDy
2819     */
2820    public float getShadowDy() {
2821        return mShadowDy;
2822    }
2823
2824    /**
2825     * @return the color of the shadow layer
2826     *
2827     * @see #setShadowLayer(float, float, float, int)
2828     *
2829     * @attr ref android.R.styleable#TextView_shadowColor
2830     */
2831    public int getShadowColor() {
2832        return mShadowColor;
2833    }
2834
2835    /**
2836     * @return the base paint used for the text.  Please use this only to
2837     * consult the Paint's properties and not to change them.
2838     */
2839    public TextPaint getPaint() {
2840        return mTextPaint;
2841    }
2842
2843    /**
2844     * Sets the autolink mask of the text.  See {@link
2845     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2846     * possible values.
2847     *
2848     * @attr ref android.R.styleable#TextView_autoLink
2849     */
2850    @android.view.RemotableViewMethod
2851    public final void setAutoLinkMask(int mask) {
2852        mAutoLinkMask = mask;
2853    }
2854
2855    /**
2856     * Sets whether the movement method will automatically be set to
2857     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2858     * set to nonzero and links are detected in {@link #setText}.
2859     * The default is true.
2860     *
2861     * @attr ref android.R.styleable#TextView_linksClickable
2862     */
2863    @android.view.RemotableViewMethod
2864    public final void setLinksClickable(boolean whether) {
2865        mLinksClickable = whether;
2866    }
2867
2868    /**
2869     * Returns whether the movement method will automatically be set to
2870     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2871     * set to nonzero and links are detected in {@link #setText}.
2872     * The default is true.
2873     *
2874     * @attr ref android.R.styleable#TextView_linksClickable
2875     */
2876    public final boolean getLinksClickable() {
2877        return mLinksClickable;
2878    }
2879
2880    /**
2881     * Returns the list of URLSpans attached to the text
2882     * (by {@link Linkify} or otherwise) if any.  You can call
2883     * {@link URLSpan#getURL} on them to find where they link to
2884     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2885     * to find the region of the text they are attached to.
2886     */
2887    public URLSpan[] getUrls() {
2888        if (mText instanceof Spanned) {
2889            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2890        } else {
2891            return new URLSpan[0];
2892        }
2893    }
2894
2895    /**
2896     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2897     * TextView.
2898     *
2899     * @see #setHintTextColor(ColorStateList)
2900     * @see #getHintTextColors()
2901     * @see #setTextColor(int)
2902     *
2903     * @attr ref android.R.styleable#TextView_textColorHint
2904     */
2905    @android.view.RemotableViewMethod
2906    public final void setHintTextColor(int color) {
2907        mHintTextColor = ColorStateList.valueOf(color);
2908        updateTextColors();
2909    }
2910
2911    /**
2912     * Sets the color of the hint text.
2913     *
2914     * @see #getHintTextColors()
2915     * @see #setHintTextColor(int)
2916     * @see #setTextColor(ColorStateList)
2917     * @see #setLinkTextColor(ColorStateList)
2918     *
2919     * @attr ref android.R.styleable#TextView_textColorHint
2920     */
2921    public final void setHintTextColor(ColorStateList colors) {
2922        mHintTextColor = colors;
2923        updateTextColors();
2924    }
2925
2926    /**
2927     * @return the color of the hint text, for the different states of this TextView.
2928     *
2929     * @see #setHintTextColor(ColorStateList)
2930     * @see #setHintTextColor(int)
2931     * @see #setTextColor(ColorStateList)
2932     * @see #setLinkTextColor(ColorStateList)
2933     *
2934     * @attr ref android.R.styleable#TextView_textColorHint
2935     */
2936    public final ColorStateList getHintTextColors() {
2937        return mHintTextColor;
2938    }
2939
2940    /**
2941     * <p>Return the current color selected to paint the hint text.</p>
2942     *
2943     * @return Returns the current hint text color.
2944     */
2945    public final int getCurrentHintTextColor() {
2946        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2947    }
2948
2949    /**
2950     * Sets the color of links in the text.
2951     *
2952     * @see #setLinkTextColor(ColorStateList)
2953     * @see #getLinkTextColors()
2954     *
2955     * @attr ref android.R.styleable#TextView_textColorLink
2956     */
2957    @android.view.RemotableViewMethod
2958    public final void setLinkTextColor(int color) {
2959        mLinkTextColor = ColorStateList.valueOf(color);
2960        updateTextColors();
2961    }
2962
2963    /**
2964     * Sets the color of links in the text.
2965     *
2966     * @see #setLinkTextColor(int)
2967     * @see #getLinkTextColors()
2968     * @see #setTextColor(ColorStateList)
2969     * @see #setHintTextColor(ColorStateList)
2970     *
2971     * @attr ref android.R.styleable#TextView_textColorLink
2972     */
2973    public final void setLinkTextColor(ColorStateList colors) {
2974        mLinkTextColor = colors;
2975        updateTextColors();
2976    }
2977
2978    /**
2979     * @return the list of colors used to paint the links in the text, for the different states of
2980     * this TextView
2981     *
2982     * @see #setLinkTextColor(ColorStateList)
2983     * @see #setLinkTextColor(int)
2984     *
2985     * @attr ref android.R.styleable#TextView_textColorLink
2986     */
2987    public final ColorStateList getLinkTextColors() {
2988        return mLinkTextColor;
2989    }
2990
2991    /**
2992     * Sets the horizontal alignment of the text and the
2993     * vertical gravity that will be used when there is extra space
2994     * in the TextView beyond what is required for the text itself.
2995     *
2996     * @see android.view.Gravity
2997     * @attr ref android.R.styleable#TextView_gravity
2998     */
2999    public void setGravity(int gravity) {
3000        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3001            gravity |= Gravity.START;
3002        }
3003        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3004            gravity |= Gravity.TOP;
3005        }
3006
3007        boolean newLayout = false;
3008
3009        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3010            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3011            newLayout = true;
3012        }
3013
3014        if (gravity != mGravity) {
3015            invalidate();
3016        }
3017
3018        mGravity = gravity;
3019
3020        if (mLayout != null && newLayout) {
3021            // XXX this is heavy-handed because no actual content changes.
3022            int want = mLayout.getWidth();
3023            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3024
3025            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3026                          mRight - mLeft - getCompoundPaddingLeft() -
3027                          getCompoundPaddingRight(), true);
3028        }
3029    }
3030
3031    /**
3032     * Returns the horizontal and vertical alignment of this TextView.
3033     *
3034     * @see android.view.Gravity
3035     * @attr ref android.R.styleable#TextView_gravity
3036     */
3037    public int getGravity() {
3038        return mGravity;
3039    }
3040
3041    /**
3042     * @return the flags on the Paint being used to display the text.
3043     * @see Paint#getFlags
3044     */
3045    public int getPaintFlags() {
3046        return mTextPaint.getFlags();
3047    }
3048
3049    /**
3050     * Sets flags on the Paint being used to display the text and
3051     * reflows the text if they are different from the old flags.
3052     * @see Paint#setFlags
3053     */
3054    @android.view.RemotableViewMethod
3055    public void setPaintFlags(int flags) {
3056        if (mTextPaint.getFlags() != flags) {
3057            mTextPaint.setFlags(flags);
3058
3059            if (mLayout != null) {
3060                nullLayouts();
3061                requestLayout();
3062                invalidate();
3063            }
3064        }
3065    }
3066
3067    /**
3068     * Sets whether the text should be allowed to be wider than the
3069     * View is.  If false, it will be wrapped to the width of the View.
3070     *
3071     * @attr ref android.R.styleable#TextView_scrollHorizontally
3072     */
3073    public void setHorizontallyScrolling(boolean whether) {
3074        if (mHorizontallyScrolling != whether) {
3075            mHorizontallyScrolling = whether;
3076
3077            if (mLayout != null) {
3078                nullLayouts();
3079                requestLayout();
3080                invalidate();
3081            }
3082        }
3083    }
3084
3085    /**
3086     * Returns whether the text is allowed to be wider than the View is.
3087     * If false, the text will be wrapped to the width of the View.
3088     *
3089     * @attr ref android.R.styleable#TextView_scrollHorizontally
3090     * @hide
3091     */
3092    public boolean getHorizontallyScrolling() {
3093        return mHorizontallyScrolling;
3094    }
3095
3096    /**
3097     * Makes the TextView at least this many lines tall.
3098     *
3099     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3100     * set this value to 1.
3101     *
3102     * @see #getMinLines()
3103     *
3104     * @attr ref android.R.styleable#TextView_minLines
3105     */
3106    @android.view.RemotableViewMethod
3107    public void setMinLines(int minlines) {
3108        mMinimum = minlines;
3109        mMinMode = LINES;
3110
3111        requestLayout();
3112        invalidate();
3113    }
3114
3115    /**
3116     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3117     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3118     *
3119     * @see #setMinLines(int)
3120     *
3121     * @attr ref android.R.styleable#TextView_minLines
3122     */
3123    public int getMinLines() {
3124        return mMinMode == LINES ? mMinimum : -1;
3125    }
3126
3127    /**
3128     * Makes the TextView at least this many pixels tall.
3129     *
3130     * Setting this value overrides any other (minimum) number of lines setting.
3131     *
3132     * @attr ref android.R.styleable#TextView_minHeight
3133     */
3134    @android.view.RemotableViewMethod
3135    public void setMinHeight(int minHeight) {
3136        mMinimum = minHeight;
3137        mMinMode = PIXELS;
3138
3139        requestLayout();
3140        invalidate();
3141    }
3142
3143    /**
3144     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3145     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3146     *
3147     * @see #setMinHeight(int)
3148     *
3149     * @attr ref android.R.styleable#TextView_minHeight
3150     */
3151    public int getMinHeight() {
3152        return mMinMode == PIXELS ? mMinimum : -1;
3153    }
3154
3155    /**
3156     * Makes the TextView at most this many lines tall.
3157     *
3158     * Setting this value overrides any other (maximum) height setting.
3159     *
3160     * @attr ref android.R.styleable#TextView_maxLines
3161     */
3162    @android.view.RemotableViewMethod
3163    public void setMaxLines(int maxlines) {
3164        mMaximum = maxlines;
3165        mMaxMode = LINES;
3166
3167        requestLayout();
3168        invalidate();
3169    }
3170
3171    /**
3172     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3173     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3174     *
3175     * @see #setMaxLines(int)
3176     *
3177     * @attr ref android.R.styleable#TextView_maxLines
3178     */
3179    public int getMaxLines() {
3180        return mMaxMode == LINES ? mMaximum : -1;
3181    }
3182
3183    /**
3184     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3185     * {@link #setMaxLines(int)} method.
3186     *
3187     * Setting this value overrides any other (maximum) number of lines setting.
3188     *
3189     * @attr ref android.R.styleable#TextView_maxHeight
3190     */
3191    @android.view.RemotableViewMethod
3192    public void setMaxHeight(int maxHeight) {
3193        mMaximum = maxHeight;
3194        mMaxMode = PIXELS;
3195
3196        requestLayout();
3197        invalidate();
3198    }
3199
3200    /**
3201     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3202     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3203     *
3204     * @see #setMaxHeight(int)
3205     *
3206     * @attr ref android.R.styleable#TextView_maxHeight
3207     */
3208    public int getMaxHeight() {
3209        return mMaxMode == PIXELS ? mMaximum : -1;
3210    }
3211
3212    /**
3213     * Makes the TextView exactly this many lines tall.
3214     *
3215     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3216     * height setting. A single line TextView will set this value to 1.
3217     *
3218     * @attr ref android.R.styleable#TextView_lines
3219     */
3220    @android.view.RemotableViewMethod
3221    public void setLines(int lines) {
3222        mMaximum = mMinimum = lines;
3223        mMaxMode = mMinMode = LINES;
3224
3225        requestLayout();
3226        invalidate();
3227    }
3228
3229    /**
3230     * Makes the TextView exactly this many pixels tall.
3231     * You could do the same thing by specifying this number in the
3232     * LayoutParams.
3233     *
3234     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3235     * height setting.
3236     *
3237     * @attr ref android.R.styleable#TextView_height
3238     */
3239    @android.view.RemotableViewMethod
3240    public void setHeight(int pixels) {
3241        mMaximum = mMinimum = pixels;
3242        mMaxMode = mMinMode = PIXELS;
3243
3244        requestLayout();
3245        invalidate();
3246    }
3247
3248    /**
3249     * Makes the TextView at least this many ems wide
3250     *
3251     * @attr ref android.R.styleable#TextView_minEms
3252     */
3253    @android.view.RemotableViewMethod
3254    public void setMinEms(int minems) {
3255        mMinWidth = minems;
3256        mMinWidthMode = EMS;
3257
3258        requestLayout();
3259        invalidate();
3260    }
3261
3262    /**
3263     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3264     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3265     *
3266     * @see #setMinEms(int)
3267     * @see #setEms(int)
3268     *
3269     * @attr ref android.R.styleable#TextView_minEms
3270     */
3271    public int getMinEms() {
3272        return mMinWidthMode == EMS ? mMinWidth : -1;
3273    }
3274
3275    /**
3276     * Makes the TextView at least this many pixels wide
3277     *
3278     * @attr ref android.R.styleable#TextView_minWidth
3279     */
3280    @android.view.RemotableViewMethod
3281    public void setMinWidth(int minpixels) {
3282        mMinWidth = minpixels;
3283        mMinWidthMode = PIXELS;
3284
3285        requestLayout();
3286        invalidate();
3287    }
3288
3289    /**
3290     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3291     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3292     *
3293     * @see #setMinWidth(int)
3294     * @see #setWidth(int)
3295     *
3296     * @attr ref android.R.styleable#TextView_minWidth
3297     */
3298    public int getMinWidth() {
3299        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3300    }
3301
3302    /**
3303     * Makes the TextView at most this many ems wide
3304     *
3305     * @attr ref android.R.styleable#TextView_maxEms
3306     */
3307    @android.view.RemotableViewMethod
3308    public void setMaxEms(int maxems) {
3309        mMaxWidth = maxems;
3310        mMaxWidthMode = EMS;
3311
3312        requestLayout();
3313        invalidate();
3314    }
3315
3316    /**
3317     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3318     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3319     *
3320     * @see #setMaxEms(int)
3321     * @see #setEms(int)
3322     *
3323     * @attr ref android.R.styleable#TextView_maxEms
3324     */
3325    public int getMaxEms() {
3326        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3327    }
3328
3329    /**
3330     * Makes the TextView at most this many pixels wide
3331     *
3332     * @attr ref android.R.styleable#TextView_maxWidth
3333     */
3334    @android.view.RemotableViewMethod
3335    public void setMaxWidth(int maxpixels) {
3336        mMaxWidth = maxpixels;
3337        mMaxWidthMode = PIXELS;
3338
3339        requestLayout();
3340        invalidate();
3341    }
3342
3343    /**
3344     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3345     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3346     *
3347     * @see #setMaxWidth(int)
3348     * @see #setWidth(int)
3349     *
3350     * @attr ref android.R.styleable#TextView_maxWidth
3351     */
3352    public int getMaxWidth() {
3353        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3354    }
3355
3356    /**
3357     * Makes the TextView exactly this many ems wide
3358     *
3359     * @see #setMaxEms(int)
3360     * @see #setMinEms(int)
3361     * @see #getMinEms()
3362     * @see #getMaxEms()
3363     *
3364     * @attr ref android.R.styleable#TextView_ems
3365     */
3366    @android.view.RemotableViewMethod
3367    public void setEms(int ems) {
3368        mMaxWidth = mMinWidth = ems;
3369        mMaxWidthMode = mMinWidthMode = EMS;
3370
3371        requestLayout();
3372        invalidate();
3373    }
3374
3375    /**
3376     * Makes the TextView exactly this many pixels wide.
3377     * You could do the same thing by specifying this number in the
3378     * LayoutParams.
3379     *
3380     * @see #setMaxWidth(int)
3381     * @see #setMinWidth(int)
3382     * @see #getMinWidth()
3383     * @see #getMaxWidth()
3384     *
3385     * @attr ref android.R.styleable#TextView_width
3386     */
3387    @android.view.RemotableViewMethod
3388    public void setWidth(int pixels) {
3389        mMaxWidth = mMinWidth = pixels;
3390        mMaxWidthMode = mMinWidthMode = PIXELS;
3391
3392        requestLayout();
3393        invalidate();
3394    }
3395
3396    /**
3397     * Sets line spacing for this TextView.  Each line will have its height
3398     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3399     *
3400     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3401     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3402     */
3403    public void setLineSpacing(float add, float mult) {
3404        if (mSpacingAdd != add || mSpacingMult != mult) {
3405            mSpacingAdd = add;
3406            mSpacingMult = mult;
3407
3408            if (mLayout != null) {
3409                nullLayouts();
3410                requestLayout();
3411                invalidate();
3412            }
3413        }
3414    }
3415
3416    /**
3417     * Gets the line spacing multiplier
3418     *
3419     * @return the value by which each line's height is multiplied to get its actual height.
3420     *
3421     * @see #setLineSpacing(float, float)
3422     * @see #getLineSpacingExtra()
3423     *
3424     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3425     */
3426    public float getLineSpacingMultiplier() {
3427        return mSpacingMult;
3428    }
3429
3430    /**
3431     * Gets the line spacing extra space
3432     *
3433     * @return the extra space that is added to the height of each lines of this TextView.
3434     *
3435     * @see #setLineSpacing(float, float)
3436     * @see #getLineSpacingMultiplier()
3437     *
3438     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3439     */
3440    public float getLineSpacingExtra() {
3441        return mSpacingAdd;
3442    }
3443
3444    /**
3445     * Convenience method: Append the specified text to the TextView's
3446     * display buffer, upgrading it to BufferType.EDITABLE if it was
3447     * not already editable.
3448     */
3449    public final void append(CharSequence text) {
3450        append(text, 0, text.length());
3451    }
3452
3453    /**
3454     * Convenience method: Append the specified text slice to the TextView's
3455     * display buffer, upgrading it to BufferType.EDITABLE if it was
3456     * not already editable.
3457     */
3458    public void append(CharSequence text, int start, int end) {
3459        if (!(mText instanceof Editable)) {
3460            setText(mText, BufferType.EDITABLE);
3461        }
3462
3463        ((Editable) mText).append(text, start, end);
3464    }
3465
3466    private void updateTextColors() {
3467        boolean inval = false;
3468        int color = mTextColor.getColorForState(getDrawableState(), 0);
3469        if (color != mCurTextColor) {
3470            mCurTextColor = color;
3471            inval = true;
3472        }
3473        if (mLinkTextColor != null) {
3474            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3475            if (color != mTextPaint.linkColor) {
3476                mTextPaint.linkColor = color;
3477                inval = true;
3478            }
3479        }
3480        if (mHintTextColor != null) {
3481            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3482            if (color != mCurHintTextColor && mText.length() == 0) {
3483                mCurHintTextColor = color;
3484                inval = true;
3485            }
3486        }
3487        if (inval) {
3488            // Text needs to be redrawn with the new color
3489            if (mEditor != null) mEditor.invalidateTextDisplayList();
3490            invalidate();
3491        }
3492    }
3493
3494    @Override
3495    protected void drawableStateChanged() {
3496        super.drawableStateChanged();
3497        if (mTextColor != null && mTextColor.isStateful()
3498                || (mHintTextColor != null && mHintTextColor.isStateful())
3499                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3500            updateTextColors();
3501        }
3502
3503        final Drawables dr = mDrawables;
3504        if (dr != null) {
3505            int[] state = getDrawableState();
3506            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3507                dr.mDrawableTop.setState(state);
3508            }
3509            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3510                dr.mDrawableBottom.setState(state);
3511            }
3512            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3513                dr.mDrawableLeft.setState(state);
3514            }
3515            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3516                dr.mDrawableRight.setState(state);
3517            }
3518            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3519                dr.mDrawableStart.setState(state);
3520            }
3521            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3522                dr.mDrawableEnd.setState(state);
3523            }
3524        }
3525    }
3526
3527    @Override
3528    public void drawableHotspotChanged(float x, float y) {
3529        super.drawableHotspotChanged(x, y);
3530
3531        final Drawables dr = mDrawables;
3532        if (dr != null) {
3533            if (dr.mDrawableTop != null) {
3534                dr.mDrawableTop.setHotspot(x, y);
3535            }
3536            if (dr.mDrawableBottom != null) {
3537                dr.mDrawableBottom.setHotspot(x, y);
3538            }
3539            if (dr.mDrawableLeft != null) {
3540                dr.mDrawableLeft.setHotspot(x, y);
3541            }
3542            if (dr.mDrawableRight != null) {
3543                dr.mDrawableRight.setHotspot(x, y);
3544            }
3545            if (dr.mDrawableStart != null) {
3546                dr.mDrawableStart.setHotspot(x, y);
3547            }
3548            if (dr.mDrawableEnd != null) {
3549                dr.mDrawableEnd.setHotspot(x, y);
3550            }
3551        }
3552    }
3553
3554    @Override
3555    public Parcelable onSaveInstanceState() {
3556        Parcelable superState = super.onSaveInstanceState();
3557
3558        // Save state if we are forced to
3559        boolean save = mFreezesText;
3560        int start = 0;
3561        int end = 0;
3562
3563        if (mText != null) {
3564            start = getSelectionStart();
3565            end = getSelectionEnd();
3566            if (start >= 0 || end >= 0) {
3567                // Or save state if there is a selection
3568                save = true;
3569            }
3570        }
3571
3572        if (save) {
3573            SavedState ss = new SavedState(superState);
3574            // XXX Should also save the current scroll position!
3575            ss.selStart = start;
3576            ss.selEnd = end;
3577
3578            if (mText instanceof Spanned) {
3579                Spannable sp = new SpannableStringBuilder(mText);
3580
3581                if (mEditor != null) {
3582                    removeMisspelledSpans(sp);
3583                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3584                }
3585
3586                ss.text = sp;
3587            } else {
3588                ss.text = mText.toString();
3589            }
3590
3591            if (isFocused() && start >= 0 && end >= 0) {
3592                ss.frozenWithFocus = true;
3593            }
3594
3595            ss.error = getError();
3596
3597            return ss;
3598        }
3599
3600        return superState;
3601    }
3602
3603    void removeMisspelledSpans(Spannable spannable) {
3604        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3605                SuggestionSpan.class);
3606        for (int i = 0; i < suggestionSpans.length; i++) {
3607            int flags = suggestionSpans[i].getFlags();
3608            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3609                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3610                spannable.removeSpan(suggestionSpans[i]);
3611            }
3612        }
3613    }
3614
3615    @Override
3616    public void onRestoreInstanceState(Parcelable state) {
3617        if (!(state instanceof SavedState)) {
3618            super.onRestoreInstanceState(state);
3619            return;
3620        }
3621
3622        SavedState ss = (SavedState)state;
3623        super.onRestoreInstanceState(ss.getSuperState());
3624
3625        // XXX restore buffer type too, as well as lots of other stuff
3626        if (ss.text != null) {
3627            setText(ss.text);
3628        }
3629
3630        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3631            if (mText instanceof Spannable) {
3632                int len = mText.length();
3633
3634                if (ss.selStart > len || ss.selEnd > len) {
3635                    String restored = "";
3636
3637                    if (ss.text != null) {
3638                        restored = "(restored) ";
3639                    }
3640
3641                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3642                          "/" + ss.selEnd + " out of range for " + restored +
3643                          "text " + mText);
3644                } else {
3645                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3646
3647                    if (ss.frozenWithFocus) {
3648                        createEditorIfNeeded();
3649                        mEditor.mFrozenWithFocus = true;
3650                    }
3651                }
3652            }
3653        }
3654
3655        if (ss.error != null) {
3656            final CharSequence error = ss.error;
3657            // Display the error later, after the first layout pass
3658            post(new Runnable() {
3659                public void run() {
3660                    setError(error);
3661                }
3662            });
3663        }
3664    }
3665
3666    /**
3667     * Control whether this text view saves its entire text contents when
3668     * freezing to an icicle, in addition to dynamic state such as cursor
3669     * position.  By default this is false, not saving the text.  Set to true
3670     * if the text in the text view is not being saved somewhere else in
3671     * persistent storage (such as in a content provider) so that if the
3672     * view is later thawed the user will not lose their data.
3673     *
3674     * @param freezesText Controls whether a frozen icicle should include the
3675     * entire text data: true to include it, false to not.
3676     *
3677     * @attr ref android.R.styleable#TextView_freezesText
3678     */
3679    @android.view.RemotableViewMethod
3680    public void setFreezesText(boolean freezesText) {
3681        mFreezesText = freezesText;
3682    }
3683
3684    /**
3685     * Return whether this text view is including its entire text contents
3686     * in frozen icicles.
3687     *
3688     * @return Returns true if text is included, false if it isn't.
3689     *
3690     * @see #setFreezesText
3691     */
3692    public boolean getFreezesText() {
3693        return mFreezesText;
3694    }
3695
3696    ///////////////////////////////////////////////////////////////////////////
3697
3698    /**
3699     * Sets the Factory used to create new Editables.
3700     */
3701    public final void setEditableFactory(Editable.Factory factory) {
3702        mEditableFactory = factory;
3703        setText(mText);
3704    }
3705
3706    /**
3707     * Sets the Factory used to create new Spannables.
3708     */
3709    public final void setSpannableFactory(Spannable.Factory factory) {
3710        mSpannableFactory = factory;
3711        setText(mText);
3712    }
3713
3714    /**
3715     * Sets the string value of the TextView. TextView <em>does not</em> accept
3716     * HTML-like formatting, which you can do with text strings in XML resource files.
3717     * To style your strings, attach android.text.style.* objects to a
3718     * {@link android.text.SpannableString SpannableString}, or see the
3719     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3720     * Available Resource Types</a> documentation for an example of setting
3721     * formatted text in the XML resource file.
3722     *
3723     * @attr ref android.R.styleable#TextView_text
3724     */
3725    @android.view.RemotableViewMethod
3726    public final void setText(CharSequence text) {
3727        setText(text, mBufferType);
3728    }
3729
3730    /**
3731     * Like {@link #setText(CharSequence)},
3732     * except that the cursor position (if any) is retained in the new text.
3733     *
3734     * @param text The new text to place in the text view.
3735     *
3736     * @see #setText(CharSequence)
3737     */
3738    @android.view.RemotableViewMethod
3739    public final void setTextKeepState(CharSequence text) {
3740        setTextKeepState(text, mBufferType);
3741    }
3742
3743    /**
3744     * Sets the text that this TextView is to display (see
3745     * {@link #setText(CharSequence)}) and also sets whether it is stored
3746     * in a styleable/spannable buffer and whether it is editable.
3747     *
3748     * @attr ref android.R.styleable#TextView_text
3749     * @attr ref android.R.styleable#TextView_bufferType
3750     */
3751    public void setText(CharSequence text, BufferType type) {
3752        setText(text, type, true, 0);
3753
3754        if (mCharWrapper != null) {
3755            mCharWrapper.mChars = null;
3756        }
3757    }
3758
3759    private void setText(CharSequence text, BufferType type,
3760                         boolean notifyBefore, int oldlen) {
3761        if (text == null) {
3762            text = "";
3763        }
3764
3765        // If suggestions are not enabled, remove the suggestion spans from the text
3766        if (!isSuggestionsEnabled()) {
3767            text = removeSuggestionSpans(text);
3768        }
3769
3770        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3771
3772        if (text instanceof Spanned &&
3773            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3774            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3775                setHorizontalFadingEdgeEnabled(true);
3776                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3777            } else {
3778                setHorizontalFadingEdgeEnabled(false);
3779                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3780            }
3781            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3782        }
3783
3784        int n = mFilters.length;
3785        for (int i = 0; i < n; i++) {
3786            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3787            if (out != null) {
3788                text = out;
3789            }
3790        }
3791
3792        if (notifyBefore) {
3793            if (mText != null) {
3794                oldlen = mText.length();
3795                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3796            } else {
3797                sendBeforeTextChanged("", 0, 0, text.length());
3798            }
3799        }
3800
3801        boolean needEditableForNotification = false;
3802
3803        if (mListeners != null && mListeners.size() != 0) {
3804            needEditableForNotification = true;
3805        }
3806
3807        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3808                needEditableForNotification) {
3809            createEditorIfNeeded();
3810            Editable t = mEditableFactory.newEditable(text);
3811            text = t;
3812            setFilters(t, mFilters);
3813            InputMethodManager imm = InputMethodManager.peekInstance();
3814            if (imm != null) imm.restartInput(this);
3815        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3816            text = mSpannableFactory.newSpannable(text);
3817        } else if (!(text instanceof CharWrapper)) {
3818            text = TextUtils.stringOrSpannedString(text);
3819        }
3820
3821        if (mAutoLinkMask != 0) {
3822            Spannable s2;
3823
3824            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3825                s2 = (Spannable) text;
3826            } else {
3827                s2 = mSpannableFactory.newSpannable(text);
3828            }
3829
3830            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3831                text = s2;
3832                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3833
3834                /*
3835                 * We must go ahead and set the text before changing the
3836                 * movement method, because setMovementMethod() may call
3837                 * setText() again to try to upgrade the buffer type.
3838                 */
3839                mText = text;
3840
3841                // Do not change the movement method for text that support text selection as it
3842                // would prevent an arbitrary cursor displacement.
3843                if (mLinksClickable && !textCanBeSelected()) {
3844                    setMovementMethod(LinkMovementMethod.getInstance());
3845                }
3846            }
3847        }
3848
3849        mBufferType = type;
3850        mText = text;
3851
3852        if (mTransformation == null) {
3853            mTransformed = text;
3854        } else {
3855            mTransformed = mTransformation.getTransformation(text, this);
3856        }
3857
3858        final int textLength = text.length();
3859
3860        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3861            Spannable sp = (Spannable) text;
3862
3863            // Remove any ChangeWatchers that might have come from other TextViews.
3864            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3865            final int count = watchers.length;
3866            for (int i = 0; i < count; i++) {
3867                sp.removeSpan(watchers[i]);
3868            }
3869
3870            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3871
3872            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3873                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3874
3875            if (mEditor != null) mEditor.addSpanWatchers(sp);
3876
3877            if (mTransformation != null) {
3878                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3879            }
3880
3881            if (mMovement != null) {
3882                mMovement.initialize(this, (Spannable) text);
3883
3884                /*
3885                 * Initializing the movement method will have set the
3886                 * selection, so reset mSelectionMoved to keep that from
3887                 * interfering with the normal on-focus selection-setting.
3888                 */
3889                if (mEditor != null) mEditor.mSelectionMoved = false;
3890            }
3891        }
3892
3893        if (mLayout != null) {
3894            checkForRelayout();
3895        }
3896
3897        sendOnTextChanged(text, 0, oldlen, textLength);
3898        onTextChanged(text, 0, oldlen, textLength);
3899
3900        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
3901
3902        if (needEditableForNotification) {
3903            sendAfterTextChanged((Editable) text);
3904        }
3905
3906        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3907        if (mEditor != null) mEditor.prepareCursorControllers();
3908    }
3909
3910    /**
3911     * Sets the TextView to display the specified slice of the specified
3912     * char array.  You must promise that you will not change the contents
3913     * of the array except for right before another call to setText(),
3914     * since the TextView has no way to know that the text
3915     * has changed and that it needs to invalidate and re-layout.
3916     */
3917    public final void setText(char[] text, int start, int len) {
3918        int oldlen = 0;
3919
3920        if (start < 0 || len < 0 || start + len > text.length) {
3921            throw new IndexOutOfBoundsException(start + ", " + len);
3922        }
3923
3924        /*
3925         * We must do the before-notification here ourselves because if
3926         * the old text is a CharWrapper we destroy it before calling
3927         * into the normal path.
3928         */
3929        if (mText != null) {
3930            oldlen = mText.length();
3931            sendBeforeTextChanged(mText, 0, oldlen, len);
3932        } else {
3933            sendBeforeTextChanged("", 0, 0, len);
3934        }
3935
3936        if (mCharWrapper == null) {
3937            mCharWrapper = new CharWrapper(text, start, len);
3938        } else {
3939            mCharWrapper.set(text, start, len);
3940        }
3941
3942        setText(mCharWrapper, mBufferType, false, oldlen);
3943    }
3944
3945    /**
3946     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3947     * except that the cursor position (if any) is retained in the new text.
3948     *
3949     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3950     */
3951    public final void setTextKeepState(CharSequence text, BufferType type) {
3952        int start = getSelectionStart();
3953        int end = getSelectionEnd();
3954        int len = text.length();
3955
3956        setText(text, type);
3957
3958        if (start >= 0 || end >= 0) {
3959            if (mText instanceof Spannable) {
3960                Selection.setSelection((Spannable) mText,
3961                                       Math.max(0, Math.min(start, len)),
3962                                       Math.max(0, Math.min(end, len)));
3963            }
3964        }
3965    }
3966
3967    @android.view.RemotableViewMethod
3968    public final void setText(int resid) {
3969        setText(getContext().getResources().getText(resid));
3970    }
3971
3972    public final void setText(int resid, BufferType type) {
3973        setText(getContext().getResources().getText(resid), type);
3974    }
3975
3976    /**
3977     * Sets the text to be displayed when the text of the TextView is empty.
3978     * Null means to use the normal empty text. The hint does not currently
3979     * participate in determining the size of the view.
3980     *
3981     * @attr ref android.R.styleable#TextView_hint
3982     */
3983    @android.view.RemotableViewMethod
3984    public final void setHint(CharSequence hint) {
3985        mHint = TextUtils.stringOrSpannedString(hint);
3986
3987        if (mLayout != null) {
3988            checkForRelayout();
3989        }
3990
3991        if (mText.length() == 0) {
3992            invalidate();
3993        }
3994
3995        // Invalidate display list if hint is currently used
3996        if (mEditor != null && mText.length() == 0 && mHint != null) {
3997            mEditor.invalidateTextDisplayList();
3998        }
3999    }
4000
4001    /**
4002     * Sets the text to be displayed when the text of the TextView is empty,
4003     * from a resource.
4004     *
4005     * @attr ref android.R.styleable#TextView_hint
4006     */
4007    @android.view.RemotableViewMethod
4008    public final void setHint(int resid) {
4009        setHint(getContext().getResources().getText(resid));
4010    }
4011
4012    /**
4013     * Returns the hint that is displayed when the text of the TextView
4014     * is empty.
4015     *
4016     * @attr ref android.R.styleable#TextView_hint
4017     */
4018    @ViewDebug.CapturedViewProperty
4019    public CharSequence getHint() {
4020        return mHint;
4021    }
4022
4023    boolean isSingleLine() {
4024        return mSingleLine;
4025    }
4026
4027    private static boolean isMultilineInputType(int type) {
4028        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4029            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4030    }
4031
4032    /**
4033     * Removes the suggestion spans.
4034     */
4035    CharSequence removeSuggestionSpans(CharSequence text) {
4036       if (text instanceof Spanned) {
4037           Spannable spannable;
4038           if (text instanceof Spannable) {
4039               spannable = (Spannable) text;
4040           } else {
4041               spannable = new SpannableString(text);
4042               text = spannable;
4043           }
4044
4045           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4046           for (int i = 0; i < spans.length; i++) {
4047               spannable.removeSpan(spans[i]);
4048           }
4049       }
4050       return text;
4051    }
4052
4053    /**
4054     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4055     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4056     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4057     * then a soft keyboard will not be displayed for this text view.
4058     *
4059     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4060     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4061     * type.
4062     *
4063     * @see #getInputType()
4064     * @see #setRawInputType(int)
4065     * @see android.text.InputType
4066     * @attr ref android.R.styleable#TextView_inputType
4067     */
4068    public void setInputType(int type) {
4069        final boolean wasPassword = isPasswordInputType(getInputType());
4070        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4071        setInputType(type, false);
4072        final boolean isPassword = isPasswordInputType(type);
4073        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4074        boolean forceUpdate = false;
4075        if (isPassword) {
4076            setTransformationMethod(PasswordTransformationMethod.getInstance());
4077            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4078        } else if (isVisiblePassword) {
4079            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4080                forceUpdate = true;
4081            }
4082            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4083        } else if (wasPassword || wasVisiblePassword) {
4084            // not in password mode, clean up typeface and transformation
4085            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4086            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4087                forceUpdate = true;
4088            }
4089        }
4090
4091        boolean singleLine = !isMultilineInputType(type);
4092
4093        // We need to update the single line mode if it has changed or we
4094        // were previously in password mode.
4095        if (mSingleLine != singleLine || forceUpdate) {
4096            // Change single line mode, but only change the transformation if
4097            // we are not in password mode.
4098            applySingleLine(singleLine, !isPassword, true);
4099        }
4100
4101        if (!isSuggestionsEnabled()) {
4102            mText = removeSuggestionSpans(mText);
4103        }
4104
4105        InputMethodManager imm = InputMethodManager.peekInstance();
4106        if (imm != null) imm.restartInput(this);
4107    }
4108
4109    /**
4110     * It would be better to rely on the input type for everything. A password inputType should have
4111     * a password transformation. We should hence use isPasswordInputType instead of this method.
4112     *
4113     * We should:
4114     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4115     * would install the correct transformation).
4116     * - Refuse the installation of a non-password transformation in setTransformation if the input
4117     * type is password.
4118     *
4119     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4120     * is useful since it matches what the user can see (obfuscated text or not).
4121     *
4122     * @return true if the current transformation method is of the password type.
4123     */
4124    private boolean hasPasswordTransformationMethod() {
4125        return mTransformation instanceof PasswordTransformationMethod;
4126    }
4127
4128    private static boolean isPasswordInputType(int inputType) {
4129        final int variation =
4130                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4131        return variation
4132                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4133                || variation
4134                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4135                || variation
4136                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4137    }
4138
4139    private static boolean isVisiblePasswordInputType(int inputType) {
4140        final int variation =
4141                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4142        return variation
4143                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4144    }
4145
4146    /**
4147     * Directly change the content type integer of the text view, without
4148     * modifying any other state.
4149     * @see #setInputType(int)
4150     * @see android.text.InputType
4151     * @attr ref android.R.styleable#TextView_inputType
4152     */
4153    public void setRawInputType(int type) {
4154        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4155        createEditorIfNeeded();
4156        mEditor.mInputType = type;
4157    }
4158
4159    private void setInputType(int type, boolean direct) {
4160        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4161        KeyListener input;
4162        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4163            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4164            TextKeyListener.Capitalize cap;
4165            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4166                cap = TextKeyListener.Capitalize.CHARACTERS;
4167            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4168                cap = TextKeyListener.Capitalize.WORDS;
4169            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4170                cap = TextKeyListener.Capitalize.SENTENCES;
4171            } else {
4172                cap = TextKeyListener.Capitalize.NONE;
4173            }
4174            input = TextKeyListener.getInstance(autotext, cap);
4175        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4176            input = DigitsKeyListener.getInstance(
4177                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4178                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4179        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4180            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4181                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4182                    input = DateKeyListener.getInstance();
4183                    break;
4184                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4185                    input = TimeKeyListener.getInstance();
4186                    break;
4187                default:
4188                    input = DateTimeKeyListener.getInstance();
4189                    break;
4190            }
4191        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4192            input = DialerKeyListener.getInstance();
4193        } else {
4194            input = TextKeyListener.getInstance();
4195        }
4196        setRawInputType(type);
4197        if (direct) {
4198            createEditorIfNeeded();
4199            mEditor.mKeyListener = input;
4200        } else {
4201            setKeyListenerOnly(input);
4202        }
4203    }
4204
4205    /**
4206     * Get the type of the editable content.
4207     *
4208     * @see #setInputType(int)
4209     * @see android.text.InputType
4210     */
4211    public int getInputType() {
4212        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4213    }
4214
4215    /**
4216     * Change the editor type integer associated with the text view, which
4217     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4218     * has focus.
4219     * @see #getImeOptions
4220     * @see android.view.inputmethod.EditorInfo
4221     * @attr ref android.R.styleable#TextView_imeOptions
4222     */
4223    public void setImeOptions(int imeOptions) {
4224        createEditorIfNeeded();
4225        mEditor.createInputContentTypeIfNeeded();
4226        mEditor.mInputContentType.imeOptions = imeOptions;
4227    }
4228
4229    /**
4230     * Get the type of the IME editor.
4231     *
4232     * @see #setImeOptions(int)
4233     * @see android.view.inputmethod.EditorInfo
4234     */
4235    public int getImeOptions() {
4236        return mEditor != null && mEditor.mInputContentType != null
4237                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4238    }
4239
4240    /**
4241     * Change the custom IME action associated with the text view, which
4242     * will be reported to an IME with {@link EditorInfo#actionLabel}
4243     * and {@link EditorInfo#actionId} when it has focus.
4244     * @see #getImeActionLabel
4245     * @see #getImeActionId
4246     * @see android.view.inputmethod.EditorInfo
4247     * @attr ref android.R.styleable#TextView_imeActionLabel
4248     * @attr ref android.R.styleable#TextView_imeActionId
4249     */
4250    public void setImeActionLabel(CharSequence label, int actionId) {
4251        createEditorIfNeeded();
4252        mEditor.createInputContentTypeIfNeeded();
4253        mEditor.mInputContentType.imeActionLabel = label;
4254        mEditor.mInputContentType.imeActionId = actionId;
4255    }
4256
4257    /**
4258     * Get the IME action label previous set with {@link #setImeActionLabel}.
4259     *
4260     * @see #setImeActionLabel
4261     * @see android.view.inputmethod.EditorInfo
4262     */
4263    public CharSequence getImeActionLabel() {
4264        return mEditor != null && mEditor.mInputContentType != null
4265                ? mEditor.mInputContentType.imeActionLabel : null;
4266    }
4267
4268    /**
4269     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4270     *
4271     * @see #setImeActionLabel
4272     * @see android.view.inputmethod.EditorInfo
4273     */
4274    public int getImeActionId() {
4275        return mEditor != null && mEditor.mInputContentType != null
4276                ? mEditor.mInputContentType.imeActionId : 0;
4277    }
4278
4279    /**
4280     * Set a special listener to be called when an action is performed
4281     * on the text view.  This will be called when the enter key is pressed,
4282     * or when an action supplied to the IME is selected by the user.  Setting
4283     * this means that the normal hard key event will not insert a newline
4284     * into the text view, even if it is multi-line; holding down the ALT
4285     * modifier will, however, allow the user to insert a newline character.
4286     */
4287    public void setOnEditorActionListener(OnEditorActionListener l) {
4288        createEditorIfNeeded();
4289        mEditor.createInputContentTypeIfNeeded();
4290        mEditor.mInputContentType.onEditorActionListener = l;
4291    }
4292
4293    /**
4294     * Called when an attached input method calls
4295     * {@link InputConnection#performEditorAction(int)
4296     * InputConnection.performEditorAction()}
4297     * for this text view.  The default implementation will call your action
4298     * listener supplied to {@link #setOnEditorActionListener}, or perform
4299     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4300     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4301     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4302     * EditorInfo.IME_ACTION_DONE}.
4303     *
4304     * <p>For backwards compatibility, if no IME options have been set and the
4305     * text view would not normally advance focus on enter, then
4306     * the NEXT and DONE actions received here will be turned into an enter
4307     * key down/up pair to go through the normal key handling.
4308     *
4309     * @param actionCode The code of the action being performed.
4310     *
4311     * @see #setOnEditorActionListener
4312     */
4313    public void onEditorAction(int actionCode) {
4314        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4315        if (ict != null) {
4316            if (ict.onEditorActionListener != null) {
4317                if (ict.onEditorActionListener.onEditorAction(this,
4318                        actionCode, null)) {
4319                    return;
4320                }
4321            }
4322
4323            // This is the handling for some default action.
4324            // Note that for backwards compatibility we don't do this
4325            // default handling if explicit ime options have not been given,
4326            // instead turning this into the normal enter key codes that an
4327            // app may be expecting.
4328            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4329                View v = focusSearch(FOCUS_FORWARD);
4330                if (v != null) {
4331                    if (!v.requestFocus(FOCUS_FORWARD)) {
4332                        throw new IllegalStateException("focus search returned a view " +
4333                                "that wasn't able to take focus!");
4334                    }
4335                }
4336                return;
4337
4338            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4339                View v = focusSearch(FOCUS_BACKWARD);
4340                if (v != null) {
4341                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4342                        throw new IllegalStateException("focus search returned a view " +
4343                                "that wasn't able to take focus!");
4344                    }
4345                }
4346                return;
4347
4348            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4349                InputMethodManager imm = InputMethodManager.peekInstance();
4350                if (imm != null && imm.isActive(this)) {
4351                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4352                }
4353                return;
4354            }
4355        }
4356
4357        ViewRootImpl viewRootImpl = getViewRootImpl();
4358        if (viewRootImpl != null) {
4359            long eventTime = SystemClock.uptimeMillis();
4360            viewRootImpl.dispatchKeyFromIme(
4361                    new KeyEvent(eventTime, eventTime,
4362                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4363                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4364                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4365                    | KeyEvent.FLAG_EDITOR_ACTION));
4366            viewRootImpl.dispatchKeyFromIme(
4367                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4368                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4369                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4370                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4371                    | KeyEvent.FLAG_EDITOR_ACTION));
4372        }
4373    }
4374
4375    /**
4376     * Set the private content type of the text, which is the
4377     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4378     * field that will be filled in when creating an input connection.
4379     *
4380     * @see #getPrivateImeOptions()
4381     * @see EditorInfo#privateImeOptions
4382     * @attr ref android.R.styleable#TextView_privateImeOptions
4383     */
4384    public void setPrivateImeOptions(String type) {
4385        createEditorIfNeeded();
4386        mEditor.createInputContentTypeIfNeeded();
4387        mEditor.mInputContentType.privateImeOptions = type;
4388    }
4389
4390    /**
4391     * Get the private type of the content.
4392     *
4393     * @see #setPrivateImeOptions(String)
4394     * @see EditorInfo#privateImeOptions
4395     */
4396    public String getPrivateImeOptions() {
4397        return mEditor != null && mEditor.mInputContentType != null
4398                ? mEditor.mInputContentType.privateImeOptions : null;
4399    }
4400
4401    /**
4402     * Set the extra input data of the text, which is the
4403     * {@link EditorInfo#extras TextBoxAttribute.extras}
4404     * Bundle that will be filled in when creating an input connection.  The
4405     * given integer is the resource ID of an XML resource holding an
4406     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4407     *
4408     * @see #getInputExtras(boolean)
4409     * @see EditorInfo#extras
4410     * @attr ref android.R.styleable#TextView_editorExtras
4411     */
4412    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4413        createEditorIfNeeded();
4414        XmlResourceParser parser = getResources().getXml(xmlResId);
4415        mEditor.createInputContentTypeIfNeeded();
4416        mEditor.mInputContentType.extras = new Bundle();
4417        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4418    }
4419
4420    /**
4421     * Retrieve the input extras currently associated with the text view, which
4422     * can be viewed as well as modified.
4423     *
4424     * @param create If true, the extras will be created if they don't already
4425     * exist.  Otherwise, null will be returned if none have been created.
4426     * @see #setInputExtras(int)
4427     * @see EditorInfo#extras
4428     * @attr ref android.R.styleable#TextView_editorExtras
4429     */
4430    public Bundle getInputExtras(boolean create) {
4431        if (mEditor == null && !create) return null;
4432        createEditorIfNeeded();
4433        if (mEditor.mInputContentType == null) {
4434            if (!create) return null;
4435            mEditor.createInputContentTypeIfNeeded();
4436        }
4437        if (mEditor.mInputContentType.extras == null) {
4438            if (!create) return null;
4439            mEditor.mInputContentType.extras = new Bundle();
4440        }
4441        return mEditor.mInputContentType.extras;
4442    }
4443
4444    /**
4445     * Returns the error message that was set to be displayed with
4446     * {@link #setError}, or <code>null</code> if no error was set
4447     * or if it the error was cleared by the widget after user input.
4448     */
4449    public CharSequence getError() {
4450        return mEditor == null ? null : mEditor.mError;
4451    }
4452
4453    /**
4454     * Sets the right-hand compound drawable of the TextView to the "error"
4455     * icon and sets an error message that will be displayed in a popup when
4456     * the TextView has focus.  The icon and error message will be reset to
4457     * null when any key events cause changes to the TextView's text.  If the
4458     * <code>error</code> is <code>null</code>, the error message and icon
4459     * will be cleared.
4460     */
4461    @android.view.RemotableViewMethod
4462    public void setError(CharSequence error) {
4463        if (error == null) {
4464            setError(null, null);
4465        } else {
4466            Drawable dr = getContext().getDrawable(
4467                    com.android.internal.R.drawable.indicator_input_error);
4468
4469            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4470            setError(error, dr);
4471        }
4472    }
4473
4474    /**
4475     * Sets the right-hand compound drawable of the TextView to the specified
4476     * icon and sets an error message that will be displayed in a popup when
4477     * the TextView has focus.  The icon and error message will be reset to
4478     * null when any key events cause changes to the TextView's text.  The
4479     * drawable must already have had {@link Drawable#setBounds} set on it.
4480     * If the <code>error</code> is <code>null</code>, the error message will
4481     * be cleared (and you should provide a <code>null</code> icon as well).
4482     */
4483    public void setError(CharSequence error, Drawable icon) {
4484        createEditorIfNeeded();
4485        mEditor.setError(error, icon);
4486        notifyViewAccessibilityStateChangedIfNeeded(
4487                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
4488    }
4489
4490    @Override
4491    protected boolean setFrame(int l, int t, int r, int b) {
4492        boolean result = super.setFrame(l, t, r, b);
4493
4494        if (mEditor != null) mEditor.setFrame();
4495
4496        restartMarqueeIfNeeded();
4497
4498        return result;
4499    }
4500
4501    private void restartMarqueeIfNeeded() {
4502        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4503            mRestartMarquee = false;
4504            startMarquee();
4505        }
4506    }
4507
4508    /**
4509     * Sets the list of input filters that will be used if the buffer is
4510     * Editable. Has no effect otherwise.
4511     *
4512     * @attr ref android.R.styleable#TextView_maxLength
4513     */
4514    public void setFilters(InputFilter[] filters) {
4515        if (filters == null) {
4516            throw new IllegalArgumentException();
4517        }
4518
4519        mFilters = filters;
4520
4521        if (mText instanceof Editable) {
4522            setFilters((Editable) mText, filters);
4523        }
4524    }
4525
4526    /**
4527     * Sets the list of input filters on the specified Editable,
4528     * and includes mInput in the list if it is an InputFilter.
4529     */
4530    private void setFilters(Editable e, InputFilter[] filters) {
4531        if (mEditor != null) {
4532            final boolean undoFilter = mEditor.mUndoInputFilter != null;
4533            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
4534            int num = 0;
4535            if (undoFilter) num++;
4536            if (keyFilter) num++;
4537            if (num > 0) {
4538                InputFilter[] nf = new InputFilter[filters.length + num];
4539
4540                System.arraycopy(filters, 0, nf, 0, filters.length);
4541                num = 0;
4542                if (undoFilter) {
4543                    nf[filters.length] = mEditor.mUndoInputFilter;
4544                    num++;
4545                }
4546                if (keyFilter) {
4547                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
4548                }
4549
4550                e.setFilters(nf);
4551                return;
4552            }
4553        }
4554        e.setFilters(filters);
4555    }
4556
4557    /**
4558     * Returns the current list of input filters.
4559     *
4560     * @attr ref android.R.styleable#TextView_maxLength
4561     */
4562    public InputFilter[] getFilters() {
4563        return mFilters;
4564    }
4565
4566    /////////////////////////////////////////////////////////////////////////
4567
4568    private int getBoxHeight(Layout l) {
4569        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
4570        int padding = (l == mHintLayout) ?
4571                getCompoundPaddingTop() + getCompoundPaddingBottom() :
4572                getExtendedPaddingTop() + getExtendedPaddingBottom();
4573        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
4574    }
4575
4576    int getVerticalOffset(boolean forceNormal) {
4577        int voffset = 0;
4578        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4579
4580        Layout l = mLayout;
4581        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4582            l = mHintLayout;
4583        }
4584
4585        if (gravity != Gravity.TOP) {
4586            int boxht = getBoxHeight(l);
4587            int textht = l.getHeight();
4588
4589            if (textht < boxht) {
4590                if (gravity == Gravity.BOTTOM)
4591                    voffset = boxht - textht;
4592                else // (gravity == Gravity.CENTER_VERTICAL)
4593                    voffset = (boxht - textht) >> 1;
4594            }
4595        }
4596        return voffset;
4597    }
4598
4599    private int getBottomVerticalOffset(boolean forceNormal) {
4600        int voffset = 0;
4601        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4602
4603        Layout l = mLayout;
4604        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4605            l = mHintLayout;
4606        }
4607
4608        if (gravity != Gravity.BOTTOM) {
4609            int boxht = getBoxHeight(l);
4610            int textht = l.getHeight();
4611
4612            if (textht < boxht) {
4613                if (gravity == Gravity.TOP)
4614                    voffset = boxht - textht;
4615                else // (gravity == Gravity.CENTER_VERTICAL)
4616                    voffset = (boxht - textht) >> 1;
4617            }
4618        }
4619        return voffset;
4620    }
4621
4622    void invalidateCursorPath() {
4623        if (mHighlightPathBogus) {
4624            invalidateCursor();
4625        } else {
4626            final int horizontalPadding = getCompoundPaddingLeft();
4627            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4628
4629            if (mEditor.mCursorCount == 0) {
4630                synchronized (TEMP_RECTF) {
4631                    /*
4632                     * The reason for this concern about the thickness of the
4633                     * cursor and doing the floor/ceil on the coordinates is that
4634                     * some EditTexts (notably textfields in the Browser) have
4635                     * anti-aliased text where not all the characters are
4636                     * necessarily at integer-multiple locations.  This should
4637                     * make sure the entire cursor gets invalidated instead of
4638                     * sometimes missing half a pixel.
4639                     */
4640                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4641                    if (thick < 1.0f) {
4642                        thick = 1.0f;
4643                    }
4644
4645                    thick /= 2.0f;
4646
4647                    // mHighlightPath is guaranteed to be non null at that point.
4648                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4649
4650                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4651                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4652                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4653                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4654                }
4655            } else {
4656                for (int i = 0; i < mEditor.mCursorCount; i++) {
4657                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4658                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4659                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4660                }
4661            }
4662        }
4663    }
4664
4665    void invalidateCursor() {
4666        int where = getSelectionEnd();
4667
4668        invalidateCursor(where, where, where);
4669    }
4670
4671    private void invalidateCursor(int a, int b, int c) {
4672        if (a >= 0 || b >= 0 || c >= 0) {
4673            int start = Math.min(Math.min(a, b), c);
4674            int end = Math.max(Math.max(a, b), c);
4675            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4676        }
4677    }
4678
4679    /**
4680     * Invalidates the region of text enclosed between the start and end text offsets.
4681     */
4682    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4683        if (mLayout == null) {
4684            invalidate();
4685        } else {
4686                int lineStart = mLayout.getLineForOffset(start);
4687                int top = mLayout.getLineTop(lineStart);
4688
4689                // This is ridiculous, but the descent from the line above
4690                // can hang down into the line we really want to redraw,
4691                // so we have to invalidate part of the line above to make
4692                // sure everything that needs to be redrawn really is.
4693                // (But not the whole line above, because that would cause
4694                // the same problem with the descenders on the line above it!)
4695                if (lineStart > 0) {
4696                    top -= mLayout.getLineDescent(lineStart - 1);
4697                }
4698
4699                int lineEnd;
4700
4701                if (start == end)
4702                    lineEnd = lineStart;
4703                else
4704                    lineEnd = mLayout.getLineForOffset(end);
4705
4706                int bottom = mLayout.getLineBottom(lineEnd);
4707
4708                // mEditor can be null in case selection is set programmatically.
4709                if (invalidateCursor && mEditor != null) {
4710                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4711                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4712                        top = Math.min(top, bounds.top);
4713                        bottom = Math.max(bottom, bounds.bottom);
4714                    }
4715                }
4716
4717                final int compoundPaddingLeft = getCompoundPaddingLeft();
4718                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4719
4720                int left, right;
4721                if (lineStart == lineEnd && !invalidateCursor) {
4722                    left = (int) mLayout.getPrimaryHorizontal(start);
4723                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4724                    left += compoundPaddingLeft;
4725                    right += compoundPaddingLeft;
4726                } else {
4727                    // Rectangle bounding box when the region spans several lines
4728                    left = compoundPaddingLeft;
4729                    right = getWidth() - getCompoundPaddingRight();
4730                }
4731
4732                invalidate(mScrollX + left, verticalPadding + top,
4733                        mScrollX + right, verticalPadding + bottom);
4734        }
4735    }
4736
4737    private void registerForPreDraw() {
4738        if (!mPreDrawRegistered) {
4739            getViewTreeObserver().addOnPreDrawListener(this);
4740            mPreDrawRegistered = true;
4741        }
4742    }
4743
4744    private void unregisterForPreDraw() {
4745        getViewTreeObserver().removeOnPreDrawListener(this);
4746        mPreDrawRegistered = false;
4747        mPreDrawListenerDetached = false;
4748    }
4749
4750    /**
4751     * {@inheritDoc}
4752     */
4753    public boolean onPreDraw() {
4754        if (mLayout == null) {
4755            assumeLayout();
4756        }
4757
4758        if (mMovement != null) {
4759            /* This code also provides auto-scrolling when a cursor is moved using a
4760             * CursorController (insertion point or selection limits).
4761             * For selection, ensure start or end is visible depending on controller's state.
4762             */
4763            int curs = getSelectionEnd();
4764            // Do not create the controller if it is not already created.
4765            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4766                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4767                curs = getSelectionStart();
4768            }
4769
4770            /*
4771             * TODO: This should really only keep the end in view if
4772             * it already was before the text changed.  I'm not sure
4773             * of a good way to tell from here if it was.
4774             */
4775            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4776                curs = mText.length();
4777            }
4778
4779            if (curs >= 0) {
4780                bringPointIntoView(curs);
4781            }
4782        } else {
4783            bringTextIntoView();
4784        }
4785
4786        // This has to be checked here since:
4787        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4788        //   a screen rotation) since layout is not yet initialized at that point.
4789        if (mEditor != null && mEditor.mCreatedWithASelection) {
4790            mEditor.startSelectionActionMode();
4791            mEditor.mCreatedWithASelection = false;
4792        }
4793
4794        // Phone specific code (there is no ExtractEditText on tablets).
4795        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4796        // not be set. Do the test here instead.
4797        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4798            mEditor.startSelectionActionMode();
4799        }
4800
4801        unregisterForPreDraw();
4802
4803        return true;
4804    }
4805
4806    @Override
4807    protected void onAttachedToWindow() {
4808        super.onAttachedToWindow();
4809
4810        mTemporaryDetach = false;
4811
4812        if (mEditor != null) mEditor.onAttachedToWindow();
4813
4814        if (mPreDrawListenerDetached) {
4815            getViewTreeObserver().addOnPreDrawListener(this);
4816            mPreDrawListenerDetached = false;
4817        }
4818    }
4819
4820    /** @hide */
4821    @Override
4822    protected void onDetachedFromWindowInternal() {
4823        if (mPreDrawRegistered) {
4824            getViewTreeObserver().removeOnPreDrawListener(this);
4825            mPreDrawListenerDetached = true;
4826        }
4827
4828        resetResolvedDrawables();
4829
4830        if (mEditor != null) mEditor.onDetachedFromWindow();
4831
4832        super.onDetachedFromWindowInternal();
4833    }
4834
4835    @Override
4836    public void onScreenStateChanged(int screenState) {
4837        super.onScreenStateChanged(screenState);
4838        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4839    }
4840
4841    @Override
4842    protected boolean isPaddingOffsetRequired() {
4843        return mShadowRadius != 0 || mDrawables != null;
4844    }
4845
4846    @Override
4847    protected int getLeftPaddingOffset() {
4848        return getCompoundPaddingLeft() - mPaddingLeft +
4849                (int) Math.min(0, mShadowDx - mShadowRadius);
4850    }
4851
4852    @Override
4853    protected int getTopPaddingOffset() {
4854        return (int) Math.min(0, mShadowDy - mShadowRadius);
4855    }
4856
4857    @Override
4858    protected int getBottomPaddingOffset() {
4859        return (int) Math.max(0, mShadowDy + mShadowRadius);
4860    }
4861
4862    @Override
4863    protected int getRightPaddingOffset() {
4864        return -(getCompoundPaddingRight() - mPaddingRight) +
4865                (int) Math.max(0, mShadowDx + mShadowRadius);
4866    }
4867
4868    @Override
4869    protected boolean verifyDrawable(Drawable who) {
4870        final boolean verified = super.verifyDrawable(who);
4871        if (!verified && mDrawables != null) {
4872            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4873                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4874                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4875        }
4876        return verified;
4877    }
4878
4879    @Override
4880    public void jumpDrawablesToCurrentState() {
4881        super.jumpDrawablesToCurrentState();
4882        if (mDrawables != null) {
4883            if (mDrawables.mDrawableLeft != null) {
4884                mDrawables.mDrawableLeft.jumpToCurrentState();
4885            }
4886            if (mDrawables.mDrawableTop != null) {
4887                mDrawables.mDrawableTop.jumpToCurrentState();
4888            }
4889            if (mDrawables.mDrawableRight != null) {
4890                mDrawables.mDrawableRight.jumpToCurrentState();
4891            }
4892            if (mDrawables.mDrawableBottom != null) {
4893                mDrawables.mDrawableBottom.jumpToCurrentState();
4894            }
4895            if (mDrawables.mDrawableStart != null) {
4896                mDrawables.mDrawableStart.jumpToCurrentState();
4897            }
4898            if (mDrawables.mDrawableEnd != null) {
4899                mDrawables.mDrawableEnd.jumpToCurrentState();
4900            }
4901        }
4902    }
4903
4904    @Override
4905    public void invalidateDrawable(Drawable drawable) {
4906        boolean handled = false;
4907
4908        if (verifyDrawable(drawable)) {
4909            final Rect dirty = drawable.getBounds();
4910            int scrollX = mScrollX;
4911            int scrollY = mScrollY;
4912
4913            // IMPORTANT: The coordinates below are based on the coordinates computed
4914            // for each compound drawable in onDraw(). Make sure to update each section
4915            // accordingly.
4916            final TextView.Drawables drawables = mDrawables;
4917            if (drawables != null) {
4918                if (drawable == drawables.mDrawableLeft) {
4919                    final int compoundPaddingTop = getCompoundPaddingTop();
4920                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4921                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4922
4923                    scrollX += mPaddingLeft;
4924                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4925                    handled = true;
4926                } else if (drawable == drawables.mDrawableRight) {
4927                    final int compoundPaddingTop = getCompoundPaddingTop();
4928                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4929                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4930
4931                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4932                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4933                    handled = true;
4934                } else if (drawable == drawables.mDrawableTop) {
4935                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4936                    final int compoundPaddingRight = getCompoundPaddingRight();
4937                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4938
4939                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4940                    scrollY += mPaddingTop;
4941                    handled = true;
4942                } else if (drawable == drawables.mDrawableBottom) {
4943                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4944                    final int compoundPaddingRight = getCompoundPaddingRight();
4945                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4946
4947                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4948                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4949                    handled = true;
4950                }
4951            }
4952
4953            if (handled) {
4954                invalidate(dirty.left + scrollX, dirty.top + scrollY,
4955                        dirty.right + scrollX, dirty.bottom + scrollY);
4956            }
4957        }
4958
4959        if (!handled) {
4960            super.invalidateDrawable(drawable);
4961        }
4962    }
4963
4964    @Override
4965    public boolean hasOverlappingRendering() {
4966        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
4967        return ((getBackground() != null && getBackground().getCurrent() != null)
4968                || mText instanceof Spannable || hasSelection()
4969                || isHorizontalFadingEdgeEnabled());
4970    }
4971
4972    /**
4973     *
4974     * Returns the state of the {@code textIsSelectable} flag (See
4975     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
4976     * to allow users to select and copy text in a non-editable TextView, the content of an
4977     * {@link EditText} can always be selected, independently of the value of this flag.
4978     * <p>
4979     *
4980     * @return True if the text displayed in this TextView can be selected by the user.
4981     *
4982     * @attr ref android.R.styleable#TextView_textIsSelectable
4983     */
4984    public boolean isTextSelectable() {
4985        return mEditor == null ? false : mEditor.mTextIsSelectable;
4986    }
4987
4988    /**
4989     * Sets whether the content of this view is selectable by the user. The default is
4990     * {@code false}, meaning that the content is not selectable.
4991     * <p>
4992     * When you use a TextView to display a useful piece of information to the user (such as a
4993     * contact's address), make it selectable, so that the user can select and copy its
4994     * content. You can also use set the XML attribute
4995     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
4996     * <p>
4997     * When you call this method to set the value of {@code textIsSelectable}, it sets
4998     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
4999     * and {@code longClickable} to the same value. These flags correspond to the attributes
5000     * {@link android.R.styleable#View_focusable android:focusable},
5001     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5002     * {@link android.R.styleable#View_clickable android:clickable}, and
5003     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5004     * flags to a state you had set previously, call one or more of the following methods:
5005     * {@link #setFocusable(boolean) setFocusable()},
5006     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5007     * {@link #setClickable(boolean) setClickable()} or
5008     * {@link #setLongClickable(boolean) setLongClickable()}.
5009     *
5010     * @param selectable Whether the content of this TextView should be selectable.
5011     */
5012    public void setTextIsSelectable(boolean selectable) {
5013        if (!selectable && mEditor == null) return; // false is default value with no edit data
5014
5015        createEditorIfNeeded();
5016        if (mEditor.mTextIsSelectable == selectable) return;
5017
5018        mEditor.mTextIsSelectable = selectable;
5019        setFocusableInTouchMode(selectable);
5020        setFocusable(selectable);
5021        setClickable(selectable);
5022        setLongClickable(selectable);
5023
5024        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5025
5026        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5027        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5028
5029        // Called by setText above, but safer in case of future code changes
5030        mEditor.prepareCursorControllers();
5031    }
5032
5033    @Override
5034    protected int[] onCreateDrawableState(int extraSpace) {
5035        final int[] drawableState;
5036
5037        if (mSingleLine) {
5038            drawableState = super.onCreateDrawableState(extraSpace);
5039        } else {
5040            drawableState = super.onCreateDrawableState(extraSpace + 1);
5041            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5042        }
5043
5044        if (isTextSelectable()) {
5045            // Disable pressed state, which was introduced when TextView was made clickable.
5046            // Prevents text color change.
5047            // setClickable(false) would have a similar effect, but it also disables focus changes
5048            // and long press actions, which are both needed by text selection.
5049            final int length = drawableState.length;
5050            for (int i = 0; i < length; i++) {
5051                if (drawableState[i] == R.attr.state_pressed) {
5052                    final int[] nonPressedState = new int[length - 1];
5053                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5054                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5055                    return nonPressedState;
5056                }
5057            }
5058        }
5059
5060        return drawableState;
5061    }
5062
5063    private Path getUpdatedHighlightPath() {
5064        Path highlight = null;
5065        Paint highlightPaint = mHighlightPaint;
5066
5067        final int selStart = getSelectionStart();
5068        final int selEnd = getSelectionEnd();
5069        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5070            if (selStart == selEnd) {
5071                if (mEditor != null && mEditor.isCursorVisible() &&
5072                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5073                        (2 * Editor.BLINK) < Editor.BLINK) {
5074                    if (mHighlightPathBogus) {
5075                        if (mHighlightPath == null) mHighlightPath = new Path();
5076                        mHighlightPath.reset();
5077                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5078                        mEditor.updateCursorsPositions();
5079                        mHighlightPathBogus = false;
5080                    }
5081
5082                    // XXX should pass to skin instead of drawing directly
5083                    highlightPaint.setColor(mCurTextColor);
5084                    highlightPaint.setStyle(Paint.Style.STROKE);
5085                    highlight = mHighlightPath;
5086                }
5087            } else {
5088                if (mHighlightPathBogus) {
5089                    if (mHighlightPath == null) mHighlightPath = new Path();
5090                    mHighlightPath.reset();
5091                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5092                    mHighlightPathBogus = false;
5093                }
5094
5095                // XXX should pass to skin instead of drawing directly
5096                highlightPaint.setColor(mHighlightColor);
5097                highlightPaint.setStyle(Paint.Style.FILL);
5098
5099                highlight = mHighlightPath;
5100            }
5101        }
5102        return highlight;
5103    }
5104
5105    /**
5106     * @hide
5107     */
5108    public int getHorizontalOffsetForDrawables() {
5109        return 0;
5110    }
5111
5112    @Override
5113    protected void onDraw(Canvas canvas) {
5114        restartMarqueeIfNeeded();
5115
5116        // Draw the background for this view
5117        super.onDraw(canvas);
5118
5119        final int compoundPaddingLeft = getCompoundPaddingLeft();
5120        final int compoundPaddingTop = getCompoundPaddingTop();
5121        final int compoundPaddingRight = getCompoundPaddingRight();
5122        final int compoundPaddingBottom = getCompoundPaddingBottom();
5123        final int scrollX = mScrollX;
5124        final int scrollY = mScrollY;
5125        final int right = mRight;
5126        final int left = mLeft;
5127        final int bottom = mBottom;
5128        final int top = mTop;
5129        final boolean isLayoutRtl = isLayoutRtl();
5130        final int offset = getHorizontalOffsetForDrawables();
5131        final int leftOffset = isLayoutRtl ? 0 : offset;
5132        final int rightOffset = isLayoutRtl ? offset : 0 ;
5133
5134        final Drawables dr = mDrawables;
5135        if (dr != null) {
5136            /*
5137             * Compound, not extended, because the icon is not clipped
5138             * if the text height is smaller.
5139             */
5140
5141            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5142            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5143
5144            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5145            // Make sure to update invalidateDrawable() when changing this code.
5146            if (dr.mDrawableLeft != null) {
5147                canvas.save();
5148                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5149                                 scrollY + compoundPaddingTop +
5150                                 (vspace - dr.mDrawableHeightLeft) / 2);
5151                dr.mDrawableLeft.draw(canvas);
5152                canvas.restore();
5153            }
5154
5155            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5156            // Make sure to update invalidateDrawable() when changing this code.
5157            if (dr.mDrawableRight != null) {
5158                canvas.save();
5159                canvas.translate(scrollX + right - left - mPaddingRight
5160                        - dr.mDrawableSizeRight - rightOffset,
5161                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5162                dr.mDrawableRight.draw(canvas);
5163                canvas.restore();
5164            }
5165
5166            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5167            // Make sure to update invalidateDrawable() when changing this code.
5168            if (dr.mDrawableTop != null) {
5169                canvas.save();
5170                canvas.translate(scrollX + compoundPaddingLeft +
5171                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5172                dr.mDrawableTop.draw(canvas);
5173                canvas.restore();
5174            }
5175
5176            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5177            // Make sure to update invalidateDrawable() when changing this code.
5178            if (dr.mDrawableBottom != null) {
5179                canvas.save();
5180                canvas.translate(scrollX + compoundPaddingLeft +
5181                        (hspace - dr.mDrawableWidthBottom) / 2,
5182                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5183                dr.mDrawableBottom.draw(canvas);
5184                canvas.restore();
5185            }
5186        }
5187
5188        int color = mCurTextColor;
5189
5190        if (mLayout == null) {
5191            assumeLayout();
5192        }
5193
5194        Layout layout = mLayout;
5195
5196        if (mHint != null && mText.length() == 0) {
5197            if (mHintTextColor != null) {
5198                color = mCurHintTextColor;
5199            }
5200
5201            layout = mHintLayout;
5202        }
5203
5204        mTextPaint.setColor(color);
5205        mTextPaint.drawableState = getDrawableState();
5206
5207        canvas.save();
5208        /*  Would be faster if we didn't have to do this. Can we chop the
5209            (displayable) text so that we don't need to do this ever?
5210        */
5211
5212        int extendedPaddingTop = getExtendedPaddingTop();
5213        int extendedPaddingBottom = getExtendedPaddingBottom();
5214
5215        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5216        final int maxScrollY = mLayout.getHeight() - vspace;
5217
5218        float clipLeft = compoundPaddingLeft + scrollX;
5219        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5220        float clipRight = right - left - compoundPaddingRight + scrollX;
5221        float clipBottom = bottom - top + scrollY -
5222                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5223
5224        if (mShadowRadius != 0) {
5225            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5226            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5227
5228            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5229            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5230        }
5231
5232        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5233
5234        int voffsetText = 0;
5235        int voffsetCursor = 0;
5236
5237        // translate in by our padding
5238        /* shortcircuit calling getVerticaOffset() */
5239        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5240            voffsetText = getVerticalOffset(false);
5241            voffsetCursor = getVerticalOffset(true);
5242        }
5243        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5244
5245        final int layoutDirection = getLayoutDirection();
5246        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5247        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5248                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5249            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5250                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5251                final int width = mRight - mLeft;
5252                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5253                final float dx = mLayout.getLineRight(0) - (width - padding);
5254                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5255            }
5256
5257            if (mMarquee != null && mMarquee.isRunning()) {
5258                final float dx = -mMarquee.getScroll();
5259                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5260            }
5261        }
5262
5263        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5264
5265        Path highlight = getUpdatedHighlightPath();
5266        if (mEditor != null) {
5267            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5268        } else {
5269            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5270        }
5271
5272        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5273            final float dx = mMarquee.getGhostOffset();
5274            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5275            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5276        }
5277
5278        canvas.restore();
5279    }
5280
5281    @Override
5282    public void getFocusedRect(Rect r) {
5283        if (mLayout == null) {
5284            super.getFocusedRect(r);
5285            return;
5286        }
5287
5288        int selEnd = getSelectionEnd();
5289        if (selEnd < 0) {
5290            super.getFocusedRect(r);
5291            return;
5292        }
5293
5294        int selStart = getSelectionStart();
5295        if (selStart < 0 || selStart >= selEnd) {
5296            int line = mLayout.getLineForOffset(selEnd);
5297            r.top = mLayout.getLineTop(line);
5298            r.bottom = mLayout.getLineBottom(line);
5299            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5300            r.right = r.left + 4;
5301        } else {
5302            int lineStart = mLayout.getLineForOffset(selStart);
5303            int lineEnd = mLayout.getLineForOffset(selEnd);
5304            r.top = mLayout.getLineTop(lineStart);
5305            r.bottom = mLayout.getLineBottom(lineEnd);
5306            if (lineStart == lineEnd) {
5307                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5308                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5309            } else {
5310                // Selection extends across multiple lines -- make the focused
5311                // rect cover the entire width.
5312                if (mHighlightPathBogus) {
5313                    if (mHighlightPath == null) mHighlightPath = new Path();
5314                    mHighlightPath.reset();
5315                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5316                    mHighlightPathBogus = false;
5317                }
5318                synchronized (TEMP_RECTF) {
5319                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5320                    r.left = (int)TEMP_RECTF.left-1;
5321                    r.right = (int)TEMP_RECTF.right+1;
5322                }
5323            }
5324        }
5325
5326        // Adjust for padding and gravity.
5327        int paddingLeft = getCompoundPaddingLeft();
5328        int paddingTop = getExtendedPaddingTop();
5329        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5330            paddingTop += getVerticalOffset(false);
5331        }
5332        r.offset(paddingLeft, paddingTop);
5333        int paddingBottom = getExtendedPaddingBottom();
5334        r.bottom += paddingBottom;
5335    }
5336
5337    /**
5338     * Return the number of lines of text, or 0 if the internal Layout has not
5339     * been built.
5340     */
5341    public int getLineCount() {
5342        return mLayout != null ? mLayout.getLineCount() : 0;
5343    }
5344
5345    /**
5346     * Return the baseline for the specified line (0...getLineCount() - 1)
5347     * If bounds is not null, return the top, left, right, bottom extents
5348     * of the specified line in it. If the internal Layout has not been built,
5349     * return 0 and set bounds to (0, 0, 0, 0)
5350     * @param line which line to examine (0..getLineCount() - 1)
5351     * @param bounds Optional. If not null, it returns the extent of the line
5352     * @return the Y-coordinate of the baseline
5353     */
5354    public int getLineBounds(int line, Rect bounds) {
5355        if (mLayout == null) {
5356            if (bounds != null) {
5357                bounds.set(0, 0, 0, 0);
5358            }
5359            return 0;
5360        }
5361        else {
5362            int baseline = mLayout.getLineBounds(line, bounds);
5363
5364            int voffset = getExtendedPaddingTop();
5365            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5366                voffset += getVerticalOffset(true);
5367            }
5368            if (bounds != null) {
5369                bounds.offset(getCompoundPaddingLeft(), voffset);
5370            }
5371            return baseline + voffset;
5372        }
5373    }
5374
5375    @Override
5376    public int getBaseline() {
5377        if (mLayout == null) {
5378            return super.getBaseline();
5379        }
5380
5381        int voffset = 0;
5382        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5383            voffset = getVerticalOffset(true);
5384        }
5385
5386        if (isLayoutModeOptical(mParent)) {
5387            voffset -= getOpticalInsets().top;
5388        }
5389
5390        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5391    }
5392
5393    /**
5394     * @hide
5395     */
5396    @Override
5397    protected int getFadeTop(boolean offsetRequired) {
5398        if (mLayout == null) return 0;
5399
5400        int voffset = 0;
5401        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5402            voffset = getVerticalOffset(true);
5403        }
5404
5405        if (offsetRequired) voffset += getTopPaddingOffset();
5406
5407        return getExtendedPaddingTop() + voffset;
5408    }
5409
5410    /**
5411     * @hide
5412     */
5413    @Override
5414    protected int getFadeHeight(boolean offsetRequired) {
5415        return mLayout != null ? mLayout.getHeight() : 0;
5416    }
5417
5418    @Override
5419    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5420        if (keyCode == KeyEvent.KEYCODE_BACK) {
5421            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5422
5423            if (isInSelectionMode) {
5424                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5425                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5426                    if (state != null) {
5427                        state.startTracking(event, this);
5428                    }
5429                    return true;
5430                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5431                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5432                    if (state != null) {
5433                        state.handleUpEvent(event);
5434                    }
5435                    if (event.isTracking() && !event.isCanceled()) {
5436                        stopSelectionActionMode();
5437                        return true;
5438                    }
5439                }
5440            }
5441        }
5442        return super.onKeyPreIme(keyCode, event);
5443    }
5444
5445    @Override
5446    public boolean onKeyDown(int keyCode, KeyEvent event) {
5447        int which = doKeyDown(keyCode, event, null);
5448        if (which == 0) {
5449            return super.onKeyDown(keyCode, event);
5450        }
5451
5452        return true;
5453    }
5454
5455    @Override
5456    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5457        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5458
5459        int which = doKeyDown(keyCode, down, event);
5460        if (which == 0) {
5461            // Go through default dispatching.
5462            return super.onKeyMultiple(keyCode, repeatCount, event);
5463        }
5464        if (which == -1) {
5465            // Consumed the whole thing.
5466            return true;
5467        }
5468
5469        repeatCount--;
5470
5471        // We are going to dispatch the remaining events to either the input
5472        // or movement method.  To do this, we will just send a repeated stream
5473        // of down and up events until we have done the complete repeatCount.
5474        // It would be nice if those interfaces had an onKeyMultiple() method,
5475        // but adding that is a more complicated change.
5476        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5477        if (which == 1) {
5478            // mEditor and mEditor.mInput are not null from doKeyDown
5479            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5480            while (--repeatCount > 0) {
5481                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5482                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5483            }
5484            hideErrorIfUnchanged();
5485
5486        } else if (which == 2) {
5487            // mMovement is not null from doKeyDown
5488            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5489            while (--repeatCount > 0) {
5490                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5491                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5492            }
5493        }
5494
5495        return true;
5496    }
5497
5498    /**
5499     * Returns true if pressing ENTER in this field advances focus instead
5500     * of inserting the character.  This is true mostly in single-line fields,
5501     * but also in mail addresses and subjects which will display on multiple
5502     * lines but where it doesn't make sense to insert newlines.
5503     */
5504    private boolean shouldAdvanceFocusOnEnter() {
5505        if (getKeyListener() == null) {
5506            return false;
5507        }
5508
5509        if (mSingleLine) {
5510            return true;
5511        }
5512
5513        if (mEditor != null &&
5514                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5515            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5516            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5517                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5518                return true;
5519            }
5520        }
5521
5522        return false;
5523    }
5524
5525    /**
5526     * Returns true if pressing TAB in this field advances focus instead
5527     * of inserting the character.  Insert tabs only in multi-line editors.
5528     */
5529    private boolean shouldAdvanceFocusOnTab() {
5530        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5531                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5532            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5533            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5534                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5535                return false;
5536            }
5537        }
5538        return true;
5539    }
5540
5541    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5542        if (!isEnabled()) {
5543            return 0;
5544        }
5545
5546        // If this is the initial keydown, we don't want to prevent a movement away from this view.
5547        // While this shouldn't be necessary because any time we're preventing default movement we
5548        // should be restricting the focus to remain within this view, thus we'll also receive
5549        // the key up event, occasionally key up events will get dropped and we don't want to
5550        // prevent the user from traversing out of this on the next key down.
5551        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5552            mPreventDefaultMovement = false;
5553        }
5554
5555        switch (keyCode) {
5556            case KeyEvent.KEYCODE_ENTER:
5557                if (event.hasNoModifiers()) {
5558                    // When mInputContentType is set, we know that we are
5559                    // running in a "modern" cupcake environment, so don't need
5560                    // to worry about the application trying to capture
5561                    // enter key events.
5562                    if (mEditor != null && mEditor.mInputContentType != null) {
5563                        // If there is an action listener, given them a
5564                        // chance to consume the event.
5565                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5566                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5567                                this, EditorInfo.IME_NULL, event)) {
5568                            mEditor.mInputContentType.enterDown = true;
5569                            // We are consuming the enter key for them.
5570                            return -1;
5571                        }
5572                    }
5573
5574                    // If our editor should move focus when enter is pressed, or
5575                    // this is a generated event from an IME action button, then
5576                    // don't let it be inserted into the text.
5577                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5578                            || shouldAdvanceFocusOnEnter()) {
5579                        if (hasOnClickListeners()) {
5580                            return 0;
5581                        }
5582                        return -1;
5583                    }
5584                }
5585                break;
5586
5587            case KeyEvent.KEYCODE_DPAD_CENTER:
5588                if (event.hasNoModifiers()) {
5589                    if (shouldAdvanceFocusOnEnter()) {
5590                        return 0;
5591                    }
5592                }
5593                break;
5594
5595            case KeyEvent.KEYCODE_TAB:
5596                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5597                    if (shouldAdvanceFocusOnTab()) {
5598                        return 0;
5599                    }
5600                }
5601                break;
5602
5603                // Has to be done on key down (and not on key up) to correctly be intercepted.
5604            case KeyEvent.KEYCODE_BACK:
5605                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5606                    stopSelectionActionMode();
5607                    return -1;
5608                }
5609                break;
5610        }
5611
5612        if (mEditor != null && mEditor.mKeyListener != null) {
5613            resetErrorChangedFlag();
5614
5615            boolean doDown = true;
5616            if (otherEvent != null) {
5617                try {
5618                    beginBatchEdit();
5619                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5620                            otherEvent);
5621                    hideErrorIfUnchanged();
5622                    doDown = false;
5623                    if (handled) {
5624                        return -1;
5625                    }
5626                } catch (AbstractMethodError e) {
5627                    // onKeyOther was added after 1.0, so if it isn't
5628                    // implemented we need to try to dispatch as a regular down.
5629                } finally {
5630                    endBatchEdit();
5631                }
5632            }
5633
5634            if (doDown) {
5635                beginBatchEdit();
5636                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5637                        keyCode, event);
5638                endBatchEdit();
5639                hideErrorIfUnchanged();
5640                if (handled) return 1;
5641            }
5642        }
5643
5644        // bug 650865: sometimes we get a key event before a layout.
5645        // don't try to move around if we don't know the layout.
5646
5647        if (mMovement != null && mLayout != null) {
5648            boolean doDown = true;
5649            if (otherEvent != null) {
5650                try {
5651                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5652                            otherEvent);
5653                    doDown = false;
5654                    if (handled) {
5655                        return -1;
5656                    }
5657                } catch (AbstractMethodError e) {
5658                    // onKeyOther was added after 1.0, so if it isn't
5659                    // implemented we need to try to dispatch as a regular down.
5660                }
5661            }
5662            if (doDown) {
5663                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
5664                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5665                        mPreventDefaultMovement = true;
5666                    }
5667                    return 2;
5668                }
5669            }
5670        }
5671
5672        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ? -1 : 0;
5673    }
5674
5675    /**
5676     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5677     * can be recorded.
5678     * @hide
5679     */
5680    public void resetErrorChangedFlag() {
5681        /*
5682         * Keep track of what the error was before doing the input
5683         * so that if an input filter changed the error, we leave
5684         * that error showing.  Otherwise, we take down whatever
5685         * error was showing when the user types something.
5686         */
5687        if (mEditor != null) mEditor.mErrorWasChanged = false;
5688    }
5689
5690    /**
5691     * @hide
5692     */
5693    public void hideErrorIfUnchanged() {
5694        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5695            setError(null, null);
5696        }
5697    }
5698
5699    @Override
5700    public boolean onKeyUp(int keyCode, KeyEvent event) {
5701        if (!isEnabled()) {
5702            return super.onKeyUp(keyCode, event);
5703        }
5704
5705        if (!KeyEvent.isModifierKey(keyCode)) {
5706            mPreventDefaultMovement = false;
5707        }
5708
5709        switch (keyCode) {
5710            case KeyEvent.KEYCODE_DPAD_CENTER:
5711                if (event.hasNoModifiers()) {
5712                    /*
5713                     * If there is a click listener, just call through to
5714                     * super, which will invoke it.
5715                     *
5716                     * If there isn't a click listener, try to show the soft
5717                     * input method.  (It will also
5718                     * call performClick(), but that won't do anything in
5719                     * this case.)
5720                     */
5721                    if (!hasOnClickListeners()) {
5722                        if (mMovement != null && mText instanceof Editable
5723                                && mLayout != null && onCheckIsTextEditor()) {
5724                            InputMethodManager imm = InputMethodManager.peekInstance();
5725                            viewClicked(imm);
5726                            if (imm != null && getShowSoftInputOnFocus()) {
5727                                imm.showSoftInput(this, 0);
5728                            }
5729                        }
5730                    }
5731                }
5732                return super.onKeyUp(keyCode, event);
5733
5734            case KeyEvent.KEYCODE_ENTER:
5735                if (event.hasNoModifiers()) {
5736                    if (mEditor != null && mEditor.mInputContentType != null
5737                            && mEditor.mInputContentType.onEditorActionListener != null
5738                            && mEditor.mInputContentType.enterDown) {
5739                        mEditor.mInputContentType.enterDown = false;
5740                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5741                                this, EditorInfo.IME_NULL, event)) {
5742                            return true;
5743                        }
5744                    }
5745
5746                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5747                            || shouldAdvanceFocusOnEnter()) {
5748                        /*
5749                         * If there is a click listener, just call through to
5750                         * super, which will invoke it.
5751                         *
5752                         * If there isn't a click listener, try to advance focus,
5753                         * but still call through to super, which will reset the
5754                         * pressed state and longpress state.  (It will also
5755                         * call performClick(), but that won't do anything in
5756                         * this case.)
5757                         */
5758                        if (!hasOnClickListeners()) {
5759                            View v = focusSearch(FOCUS_DOWN);
5760
5761                            if (v != null) {
5762                                if (!v.requestFocus(FOCUS_DOWN)) {
5763                                    throw new IllegalStateException(
5764                                            "focus search returned a view " +
5765                                            "that wasn't able to take focus!");
5766                                }
5767
5768                                /*
5769                                 * Return true because we handled the key; super
5770                                 * will return false because there was no click
5771                                 * listener.
5772                                 */
5773                                super.onKeyUp(keyCode, event);
5774                                return true;
5775                            } else if ((event.getFlags()
5776                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5777                                // No target for next focus, but make sure the IME
5778                                // if this came from it.
5779                                InputMethodManager imm = InputMethodManager.peekInstance();
5780                                if (imm != null && imm.isActive(this)) {
5781                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5782                                }
5783                            }
5784                        }
5785                    }
5786                    return super.onKeyUp(keyCode, event);
5787                }
5788                break;
5789        }
5790
5791        if (mEditor != null && mEditor.mKeyListener != null)
5792            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5793                return true;
5794
5795        if (mMovement != null && mLayout != null)
5796            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5797                return true;
5798
5799        return super.onKeyUp(keyCode, event);
5800    }
5801
5802    @Override
5803    public boolean onCheckIsTextEditor() {
5804        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5805    }
5806
5807    @Override
5808    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5809        if (onCheckIsTextEditor() && isEnabled()) {
5810            mEditor.createInputMethodStateIfNeeded();
5811            outAttrs.inputType = getInputType();
5812            if (mEditor.mInputContentType != null) {
5813                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5814                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5815                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5816                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5817                outAttrs.extras = mEditor.mInputContentType.extras;
5818            } else {
5819                outAttrs.imeOptions = EditorInfo.IME_NULL;
5820            }
5821            if (focusSearch(FOCUS_DOWN) != null) {
5822                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5823            }
5824            if (focusSearch(FOCUS_UP) != null) {
5825                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5826            }
5827            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5828                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5829                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5830                    // An action has not been set, but the enter key will move to
5831                    // the next focus, so set the action to that.
5832                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5833                } else {
5834                    // An action has not been set, and there is no focus to move
5835                    // to, so let's just supply a "done" action.
5836                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5837                }
5838                if (!shouldAdvanceFocusOnEnter()) {
5839                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5840                }
5841            }
5842            if (isMultilineInputType(outAttrs.inputType)) {
5843                // Multi-line text editors should always show an enter key.
5844                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5845            }
5846            outAttrs.hintText = mHint;
5847            if (mText instanceof Editable) {
5848                InputConnection ic = new EditableInputConnection(this);
5849                outAttrs.initialSelStart = getSelectionStart();
5850                outAttrs.initialSelEnd = getSelectionEnd();
5851                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5852                return ic;
5853            }
5854        }
5855        return null;
5856    }
5857
5858    /**
5859     * If this TextView contains editable content, extract a portion of it
5860     * based on the information in <var>request</var> in to <var>outText</var>.
5861     * @return Returns true if the text was successfully extracted, else false.
5862     */
5863    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5864        createEditorIfNeeded();
5865        return mEditor.extractText(request, outText);
5866    }
5867
5868    /**
5869     * This is used to remove all style-impacting spans from text before new
5870     * extracted text is being replaced into it, so that we don't have any
5871     * lingering spans applied during the replace.
5872     */
5873    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5874        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5875        int i = spans.length;
5876        while (i > 0) {
5877            i--;
5878            spannable.removeSpan(spans[i]);
5879        }
5880    }
5881
5882    /**
5883     * Apply to this text view the given extracted text, as previously
5884     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5885     */
5886    public void setExtractedText(ExtractedText text) {
5887        Editable content = getEditableText();
5888        if (text.text != null) {
5889            if (content == null) {
5890                setText(text.text, TextView.BufferType.EDITABLE);
5891            } else if (text.partialStartOffset < 0) {
5892                removeParcelableSpans(content, 0, content.length());
5893                content.replace(0, content.length(), text.text);
5894            } else {
5895                final int N = content.length();
5896                int start = text.partialStartOffset;
5897                if (start > N) start = N;
5898                int end = text.partialEndOffset;
5899                if (end > N) end = N;
5900                removeParcelableSpans(content, start, end);
5901                content.replace(start, end, text.text);
5902            }
5903        }
5904
5905        // Now set the selection position...  make sure it is in range, to
5906        // avoid crashes.  If this is a partial update, it is possible that
5907        // the underlying text may have changed, causing us problems here.
5908        // Also we just don't want to trust clients to do the right thing.
5909        Spannable sp = (Spannable)getText();
5910        final int N = sp.length();
5911        int start = text.selectionStart;
5912        if (start < 0) start = 0;
5913        else if (start > N) start = N;
5914        int end = text.selectionEnd;
5915        if (end < 0) end = 0;
5916        else if (end > N) end = N;
5917        Selection.setSelection(sp, start, end);
5918
5919        // Finally, update the selection mode.
5920        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5921            MetaKeyKeyListener.startSelecting(this, sp);
5922        } else {
5923            MetaKeyKeyListener.stopSelecting(this, sp);
5924        }
5925    }
5926
5927    /**
5928     * @hide
5929     */
5930    public void setExtracting(ExtractedTextRequest req) {
5931        if (mEditor.mInputMethodState != null) {
5932            mEditor.mInputMethodState.mExtractedTextRequest = req;
5933        }
5934        // This would stop a possible selection mode, but no such mode is started in case
5935        // extracted mode will start. Some text is selected though, and will trigger an action mode
5936        // in the extracted view.
5937        mEditor.hideControllers();
5938    }
5939
5940    /**
5941     * Called by the framework in response to a text completion from
5942     * the current input method, provided by it calling
5943     * {@link InputConnection#commitCompletion
5944     * InputConnection.commitCompletion()}.  The default implementation does
5945     * nothing; text views that are supporting auto-completion should override
5946     * this to do their desired behavior.
5947     *
5948     * @param text The auto complete text the user has selected.
5949     */
5950    public void onCommitCompletion(CompletionInfo text) {
5951        // intentionally empty
5952    }
5953
5954    /**
5955     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5956     * a dictionnary) from the current input method, provided by it calling
5957     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5958     * implementation flashes the background of the corrected word to provide feedback to the user.
5959     *
5960     * @param info The auto correct info about the text that was corrected.
5961     */
5962    public void onCommitCorrection(CorrectionInfo info) {
5963        if (mEditor != null) mEditor.onCommitCorrection(info);
5964    }
5965
5966    public void beginBatchEdit() {
5967        if (mEditor != null) mEditor.beginBatchEdit();
5968    }
5969
5970    public void endBatchEdit() {
5971        if (mEditor != null) mEditor.endBatchEdit();
5972    }
5973
5974    /**
5975     * Called by the framework in response to a request to begin a batch
5976     * of edit operations through a call to link {@link #beginBatchEdit()}.
5977     */
5978    public void onBeginBatchEdit() {
5979        // intentionally empty
5980    }
5981
5982    /**
5983     * Called by the framework in response to a request to end a batch
5984     * of edit operations through a call to link {@link #endBatchEdit}.
5985     */
5986    public void onEndBatchEdit() {
5987        // intentionally empty
5988    }
5989
5990    /**
5991     * Called by the framework in response to a private command from the
5992     * current method, provided by it calling
5993     * {@link InputConnection#performPrivateCommand
5994     * InputConnection.performPrivateCommand()}.
5995     *
5996     * @param action The action name of the command.
5997     * @param data Any additional data for the command.  This may be null.
5998     * @return Return true if you handled the command, else false.
5999     */
6000    public boolean onPrivateIMECommand(String action, Bundle data) {
6001        return false;
6002    }
6003
6004    private void nullLayouts() {
6005        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6006            mSavedLayout = (BoringLayout) mLayout;
6007        }
6008        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6009            mSavedHintLayout = (BoringLayout) mHintLayout;
6010        }
6011
6012        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6013
6014        mBoring = mHintBoring = null;
6015
6016        // Since it depends on the value of mLayout
6017        if (mEditor != null) mEditor.prepareCursorControllers();
6018    }
6019
6020    /**
6021     * Make a new Layout based on the already-measured size of the view,
6022     * on the assumption that it was measured correctly at some point.
6023     */
6024    private void assumeLayout() {
6025        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6026
6027        if (width < 1) {
6028            width = 0;
6029        }
6030
6031        int physicalWidth = width;
6032
6033        if (mHorizontallyScrolling) {
6034            width = VERY_WIDE;
6035        }
6036
6037        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6038                      physicalWidth, false);
6039    }
6040
6041    private Layout.Alignment getLayoutAlignment() {
6042        Layout.Alignment alignment;
6043        switch (getTextAlignment()) {
6044            case TEXT_ALIGNMENT_GRAVITY:
6045                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6046                    case Gravity.START:
6047                        alignment = Layout.Alignment.ALIGN_NORMAL;
6048                        break;
6049                    case Gravity.END:
6050                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6051                        break;
6052                    case Gravity.LEFT:
6053                        alignment = Layout.Alignment.ALIGN_LEFT;
6054                        break;
6055                    case Gravity.RIGHT:
6056                        alignment = Layout.Alignment.ALIGN_RIGHT;
6057                        break;
6058                    case Gravity.CENTER_HORIZONTAL:
6059                        alignment = Layout.Alignment.ALIGN_CENTER;
6060                        break;
6061                    default:
6062                        alignment = Layout.Alignment.ALIGN_NORMAL;
6063                        break;
6064                }
6065                break;
6066            case TEXT_ALIGNMENT_TEXT_START:
6067                alignment = Layout.Alignment.ALIGN_NORMAL;
6068                break;
6069            case TEXT_ALIGNMENT_TEXT_END:
6070                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6071                break;
6072            case TEXT_ALIGNMENT_CENTER:
6073                alignment = Layout.Alignment.ALIGN_CENTER;
6074                break;
6075            case TEXT_ALIGNMENT_VIEW_START:
6076                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6077                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6078                break;
6079            case TEXT_ALIGNMENT_VIEW_END:
6080                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6081                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6082                break;
6083            case TEXT_ALIGNMENT_INHERIT:
6084                // This should never happen as we have already resolved the text alignment
6085                // but better safe than sorry so we just fall through
6086            default:
6087                alignment = Layout.Alignment.ALIGN_NORMAL;
6088                break;
6089        }
6090        return alignment;
6091    }
6092
6093    /**
6094     * The width passed in is now the desired layout width,
6095     * not the full view width with padding.
6096     * {@hide}
6097     */
6098    protected void makeNewLayout(int wantWidth, int hintWidth,
6099                                 BoringLayout.Metrics boring,
6100                                 BoringLayout.Metrics hintBoring,
6101                                 int ellipsisWidth, boolean bringIntoView) {
6102        stopMarquee();
6103
6104        // Update "old" cached values
6105        mOldMaximum = mMaximum;
6106        mOldMaxMode = mMaxMode;
6107
6108        mHighlightPathBogus = true;
6109
6110        if (wantWidth < 0) {
6111            wantWidth = 0;
6112        }
6113        if (hintWidth < 0) {
6114            hintWidth = 0;
6115        }
6116
6117        Layout.Alignment alignment = getLayoutAlignment();
6118        final boolean testDirChange = mSingleLine && mLayout != null &&
6119            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6120             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6121        int oldDir = 0;
6122        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6123        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6124        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6125                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6126        TruncateAt effectiveEllipsize = mEllipsize;
6127        if (mEllipsize == TruncateAt.MARQUEE &&
6128                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6129            effectiveEllipsize = TruncateAt.END_SMALL;
6130        }
6131
6132        if (mTextDir == null) {
6133            mTextDir = getTextDirectionHeuristic();
6134        }
6135
6136        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6137                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6138        if (switchEllipsize) {
6139            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6140                    TruncateAt.END : TruncateAt.MARQUEE;
6141            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6142                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6143        }
6144
6145        shouldEllipsize = mEllipsize != null;
6146        mHintLayout = null;
6147
6148        if (mHint != null) {
6149            if (shouldEllipsize) hintWidth = wantWidth;
6150
6151            if (hintBoring == UNKNOWN_BORING) {
6152                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6153                                                   mHintBoring);
6154                if (hintBoring != null) {
6155                    mHintBoring = hintBoring;
6156                }
6157            }
6158
6159            if (hintBoring != null) {
6160                if (hintBoring.width <= hintWidth &&
6161                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6162                    if (mSavedHintLayout != null) {
6163                        mHintLayout = mSavedHintLayout.
6164                                replaceOrMake(mHint, mTextPaint,
6165                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6166                                hintBoring, mIncludePad);
6167                    } else {
6168                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6169                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6170                                hintBoring, mIncludePad);
6171                    }
6172
6173                    mSavedHintLayout = (BoringLayout) mHintLayout;
6174                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6175                    if (mSavedHintLayout != null) {
6176                        mHintLayout = mSavedHintLayout.
6177                                replaceOrMake(mHint, mTextPaint,
6178                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6179                                hintBoring, mIncludePad, mEllipsize,
6180                                ellipsisWidth);
6181                    } else {
6182                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6183                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6184                                hintBoring, mIncludePad, mEllipsize,
6185                                ellipsisWidth);
6186                    }
6187                } else if (shouldEllipsize) {
6188                    mHintLayout = new StaticLayout(mHint,
6189                                0, mHint.length(),
6190                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
6191                                mSpacingAdd, mIncludePad, mEllipsize,
6192                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6193                } else {
6194                    mHintLayout = new StaticLayout(mHint, mTextPaint,
6195                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6196                            mIncludePad);
6197                }
6198            } else if (shouldEllipsize) {
6199                mHintLayout = new StaticLayout(mHint,
6200                            0, mHint.length(),
6201                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
6202                            mSpacingAdd, mIncludePad, mEllipsize,
6203                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6204            } else {
6205                mHintLayout = new StaticLayout(mHint, mTextPaint,
6206                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6207                        mIncludePad);
6208            }
6209        }
6210
6211        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6212            registerForPreDraw();
6213        }
6214
6215        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6216            if (!compressText(ellipsisWidth)) {
6217                final int height = mLayoutParams.height;
6218                // If the size of the view does not depend on the size of the text, try to
6219                // start the marquee immediately
6220                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6221                    startMarquee();
6222                } else {
6223                    // Defer the start of the marquee until we know our width (see setFrame())
6224                    mRestartMarquee = true;
6225                }
6226            }
6227        }
6228
6229        // CursorControllers need a non-null mLayout
6230        if (mEditor != null) mEditor.prepareCursorControllers();
6231    }
6232
6233    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6234            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6235            boolean useSaved) {
6236        Layout result = null;
6237        if (mText instanceof Spannable) {
6238            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6239                    alignment, mTextDir, mSpacingMult,
6240                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
6241                            ellipsisWidth);
6242        } else {
6243            if (boring == UNKNOWN_BORING) {
6244                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6245                if (boring != null) {
6246                    mBoring = boring;
6247                }
6248            }
6249
6250            if (boring != null) {
6251                if (boring.width <= wantWidth &&
6252                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6253                    if (useSaved && mSavedLayout != null) {
6254                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6255                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6256                                boring, mIncludePad);
6257                    } else {
6258                        result = BoringLayout.make(mTransformed, mTextPaint,
6259                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6260                                boring, mIncludePad);
6261                    }
6262
6263                    if (useSaved) {
6264                        mSavedLayout = (BoringLayout) result;
6265                    }
6266                } else if (shouldEllipsize && boring.width <= wantWidth) {
6267                    if (useSaved && mSavedLayout != null) {
6268                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6269                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6270                                boring, mIncludePad, effectiveEllipsize,
6271                                ellipsisWidth);
6272                    } else {
6273                        result = BoringLayout.make(mTransformed, mTextPaint,
6274                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6275                                boring, mIncludePad, effectiveEllipsize,
6276                                ellipsisWidth);
6277                    }
6278                } else if (shouldEllipsize) {
6279                    result = new StaticLayout(mTransformed,
6280                            0, mTransformed.length(),
6281                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6282                            mSpacingAdd, mIncludePad, effectiveEllipsize,
6283                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6284                } else {
6285                    result = new StaticLayout(mTransformed, mTextPaint,
6286                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6287                            mIncludePad);
6288                }
6289            } else if (shouldEllipsize) {
6290                result = new StaticLayout(mTransformed,
6291                        0, mTransformed.length(),
6292                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6293                        mSpacingAdd, mIncludePad, effectiveEllipsize,
6294                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6295            } else {
6296                result = new StaticLayout(mTransformed, mTextPaint,
6297                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6298                        mIncludePad);
6299            }
6300        }
6301        return result;
6302    }
6303
6304    private boolean compressText(float width) {
6305        if (isHardwareAccelerated()) return false;
6306
6307        // Only compress the text if it hasn't been compressed by the previous pass
6308        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6309                mTextPaint.getTextScaleX() == 1.0f) {
6310            final float textWidth = mLayout.getLineWidth(0);
6311            final float overflow = (textWidth + 1.0f - width) / width;
6312            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6313                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6314                post(new Runnable() {
6315                    public void run() {
6316                        requestLayout();
6317                    }
6318                });
6319                return true;
6320            }
6321        }
6322
6323        return false;
6324    }
6325
6326    private static int desired(Layout layout) {
6327        int n = layout.getLineCount();
6328        CharSequence text = layout.getText();
6329        float max = 0;
6330
6331        // if any line was wrapped, we can't use it.
6332        // but it's ok for the last line not to have a newline
6333
6334        for (int i = 0; i < n - 1; i++) {
6335            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6336                return -1;
6337        }
6338
6339        for (int i = 0; i < n; i++) {
6340            max = Math.max(max, layout.getLineWidth(i));
6341        }
6342
6343        return (int) FloatMath.ceil(max);
6344    }
6345
6346    /**
6347     * Set whether the TextView includes extra top and bottom padding to make
6348     * room for accents that go above the normal ascent and descent.
6349     * The default is true.
6350     *
6351     * @see #getIncludeFontPadding()
6352     *
6353     * @attr ref android.R.styleable#TextView_includeFontPadding
6354     */
6355    public void setIncludeFontPadding(boolean includepad) {
6356        if (mIncludePad != includepad) {
6357            mIncludePad = includepad;
6358
6359            if (mLayout != null) {
6360                nullLayouts();
6361                requestLayout();
6362                invalidate();
6363            }
6364        }
6365    }
6366
6367    /**
6368     * Gets whether the TextView includes extra top and bottom padding to make
6369     * room for accents that go above the normal ascent and descent.
6370     *
6371     * @see #setIncludeFontPadding(boolean)
6372     *
6373     * @attr ref android.R.styleable#TextView_includeFontPadding
6374     */
6375    public boolean getIncludeFontPadding() {
6376        return mIncludePad;
6377    }
6378
6379    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6380
6381    @Override
6382    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6383        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6384        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6385        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6386        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6387
6388        int width;
6389        int height;
6390
6391        BoringLayout.Metrics boring = UNKNOWN_BORING;
6392        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6393
6394        if (mTextDir == null) {
6395            mTextDir = getTextDirectionHeuristic();
6396        }
6397
6398        int des = -1;
6399        boolean fromexisting = false;
6400
6401        if (widthMode == MeasureSpec.EXACTLY) {
6402            // Parent has told us how big to be. So be it.
6403            width = widthSize;
6404        } else {
6405            if (mLayout != null && mEllipsize == null) {
6406                des = desired(mLayout);
6407            }
6408
6409            if (des < 0) {
6410                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6411                if (boring != null) {
6412                    mBoring = boring;
6413                }
6414            } else {
6415                fromexisting = true;
6416            }
6417
6418            if (boring == null || boring == UNKNOWN_BORING) {
6419                if (des < 0) {
6420                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6421                }
6422                width = des;
6423            } else {
6424                width = boring.width;
6425            }
6426
6427            final Drawables dr = mDrawables;
6428            if (dr != null) {
6429                width = Math.max(width, dr.mDrawableWidthTop);
6430                width = Math.max(width, dr.mDrawableWidthBottom);
6431            }
6432
6433            if (mHint != null) {
6434                int hintDes = -1;
6435                int hintWidth;
6436
6437                if (mHintLayout != null && mEllipsize == null) {
6438                    hintDes = desired(mHintLayout);
6439                }
6440
6441                if (hintDes < 0) {
6442                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6443                    if (hintBoring != null) {
6444                        mHintBoring = hintBoring;
6445                    }
6446                }
6447
6448                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6449                    if (hintDes < 0) {
6450                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6451                    }
6452                    hintWidth = hintDes;
6453                } else {
6454                    hintWidth = hintBoring.width;
6455                }
6456
6457                if (hintWidth > width) {
6458                    width = hintWidth;
6459                }
6460            }
6461
6462            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6463
6464            if (mMaxWidthMode == EMS) {
6465                width = Math.min(width, mMaxWidth * getLineHeight());
6466            } else {
6467                width = Math.min(width, mMaxWidth);
6468            }
6469
6470            if (mMinWidthMode == EMS) {
6471                width = Math.max(width, mMinWidth * getLineHeight());
6472            } else {
6473                width = Math.max(width, mMinWidth);
6474            }
6475
6476            // Check against our minimum width
6477            width = Math.max(width, getSuggestedMinimumWidth());
6478
6479            if (widthMode == MeasureSpec.AT_MOST) {
6480                width = Math.min(widthSize, width);
6481            }
6482        }
6483
6484        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6485        int unpaddedWidth = want;
6486
6487        if (mHorizontallyScrolling) want = VERY_WIDE;
6488
6489        int hintWant = want;
6490        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6491
6492        if (mLayout == null) {
6493            makeNewLayout(want, hintWant, boring, hintBoring,
6494                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6495        } else {
6496            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6497                    (hintWidth != hintWant) ||
6498                    (mLayout.getEllipsizedWidth() !=
6499                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6500
6501            final boolean widthChanged = (mHint == null) &&
6502                    (mEllipsize == null) &&
6503                    (want > mLayout.getWidth()) &&
6504                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6505
6506            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6507
6508            if (layoutChanged || maximumChanged) {
6509                if (!maximumChanged && widthChanged) {
6510                    mLayout.increaseWidthTo(want);
6511                } else {
6512                    makeNewLayout(want, hintWant, boring, hintBoring,
6513                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6514                }
6515            } else {
6516                // Nothing has changed
6517            }
6518        }
6519
6520        if (heightMode == MeasureSpec.EXACTLY) {
6521            // Parent has told us how big to be. So be it.
6522            height = heightSize;
6523            mDesiredHeightAtMeasure = -1;
6524        } else {
6525            int desired = getDesiredHeight();
6526
6527            height = desired;
6528            mDesiredHeightAtMeasure = desired;
6529
6530            if (heightMode == MeasureSpec.AT_MOST) {
6531                height = Math.min(desired, heightSize);
6532            }
6533        }
6534
6535        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6536        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6537            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6538        }
6539
6540        /*
6541         * We didn't let makeNewLayout() register to bring the cursor into view,
6542         * so do it here if there is any possibility that it is needed.
6543         */
6544        if (mMovement != null ||
6545            mLayout.getWidth() > unpaddedWidth ||
6546            mLayout.getHeight() > unpaddedHeight) {
6547            registerForPreDraw();
6548        } else {
6549            scrollTo(0, 0);
6550        }
6551
6552        setMeasuredDimension(width, height);
6553    }
6554
6555    private int getDesiredHeight() {
6556        return Math.max(
6557                getDesiredHeight(mLayout, true),
6558                getDesiredHeight(mHintLayout, mEllipsize != null));
6559    }
6560
6561    private int getDesiredHeight(Layout layout, boolean cap) {
6562        if (layout == null) {
6563            return 0;
6564        }
6565
6566        int linecount = layout.getLineCount();
6567        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6568        int desired = layout.getLineTop(linecount);
6569
6570        final Drawables dr = mDrawables;
6571        if (dr != null) {
6572            desired = Math.max(desired, dr.mDrawableHeightLeft);
6573            desired = Math.max(desired, dr.mDrawableHeightRight);
6574        }
6575
6576        desired += pad;
6577
6578        if (mMaxMode == LINES) {
6579            /*
6580             * Don't cap the hint to a certain number of lines.
6581             * (Do cap it, though, if we have a maximum pixel height.)
6582             */
6583            if (cap) {
6584                if (linecount > mMaximum) {
6585                    desired = layout.getLineTop(mMaximum);
6586
6587                    if (dr != null) {
6588                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6589                        desired = Math.max(desired, dr.mDrawableHeightRight);
6590                    }
6591
6592                    desired += pad;
6593                    linecount = mMaximum;
6594                }
6595            }
6596        } else {
6597            desired = Math.min(desired, mMaximum);
6598        }
6599
6600        if (mMinMode == LINES) {
6601            if (linecount < mMinimum) {
6602                desired += getLineHeight() * (mMinimum - linecount);
6603            }
6604        } else {
6605            desired = Math.max(desired, mMinimum);
6606        }
6607
6608        // Check against our minimum height
6609        desired = Math.max(desired, getSuggestedMinimumHeight());
6610
6611        return desired;
6612    }
6613
6614    /**
6615     * Check whether a change to the existing text layout requires a
6616     * new view layout.
6617     */
6618    private void checkForResize() {
6619        boolean sizeChanged = false;
6620
6621        if (mLayout != null) {
6622            // Check if our width changed
6623            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6624                sizeChanged = true;
6625                invalidate();
6626            }
6627
6628            // Check if our height changed
6629            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6630                int desiredHeight = getDesiredHeight();
6631
6632                if (desiredHeight != this.getHeight()) {
6633                    sizeChanged = true;
6634                }
6635            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6636                if (mDesiredHeightAtMeasure >= 0) {
6637                    int desiredHeight = getDesiredHeight();
6638
6639                    if (desiredHeight != mDesiredHeightAtMeasure) {
6640                        sizeChanged = true;
6641                    }
6642                }
6643            }
6644        }
6645
6646        if (sizeChanged) {
6647            requestLayout();
6648            // caller will have already invalidated
6649        }
6650    }
6651
6652    /**
6653     * Check whether entirely new text requires a new view layout
6654     * or merely a new text layout.
6655     */
6656    private void checkForRelayout() {
6657        // If we have a fixed width, we can just swap in a new text layout
6658        // if the text height stays the same or if the view height is fixed.
6659
6660        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6661                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6662                (mHint == null || mHintLayout != null) &&
6663                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6664            // Static width, so try making a new text layout.
6665
6666            int oldht = mLayout.getHeight();
6667            int want = mLayout.getWidth();
6668            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6669
6670            /*
6671             * No need to bring the text into view, since the size is not
6672             * changing (unless we do the requestLayout(), in which case it
6673             * will happen at measure).
6674             */
6675            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6676                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6677                          false);
6678
6679            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6680                // In a fixed-height view, so use our new text layout.
6681                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6682                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6683                    invalidate();
6684                    return;
6685                }
6686
6687                // Dynamic height, but height has stayed the same,
6688                // so use our new text layout.
6689                if (mLayout.getHeight() == oldht &&
6690                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6691                    invalidate();
6692                    return;
6693                }
6694            }
6695
6696            // We lose: the height has changed and we have a dynamic height.
6697            // Request a new view layout using our new text layout.
6698            requestLayout();
6699            invalidate();
6700        } else {
6701            // Dynamic width, so we have no choice but to request a new
6702            // view layout with a new text layout.
6703            nullLayouts();
6704            requestLayout();
6705            invalidate();
6706        }
6707    }
6708
6709    @Override
6710    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6711        super.onLayout(changed, left, top, right, bottom);
6712        if (mDeferScroll >= 0) {
6713            int curs = mDeferScroll;
6714            mDeferScroll = -1;
6715            bringPointIntoView(Math.min(curs, mText.length()));
6716        }
6717    }
6718
6719    private boolean isShowingHint() {
6720        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6721    }
6722
6723    /**
6724     * Returns true if anything changed.
6725     */
6726    private boolean bringTextIntoView() {
6727        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6728        int line = 0;
6729        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6730            line = layout.getLineCount() - 1;
6731        }
6732
6733        Layout.Alignment a = layout.getParagraphAlignment(line);
6734        int dir = layout.getParagraphDirection(line);
6735        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6736        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6737        int ht = layout.getHeight();
6738
6739        int scrollx, scrolly;
6740
6741        // Convert to left, center, or right alignment.
6742        if (a == Layout.Alignment.ALIGN_NORMAL) {
6743            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6744                Layout.Alignment.ALIGN_RIGHT;
6745        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6746            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6747                Layout.Alignment.ALIGN_LEFT;
6748        }
6749
6750        if (a == Layout.Alignment.ALIGN_CENTER) {
6751            /*
6752             * Keep centered if possible, or, if it is too wide to fit,
6753             * keep leading edge in view.
6754             */
6755
6756            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6757            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6758
6759            if (right - left < hspace) {
6760                scrollx = (right + left) / 2 - hspace / 2;
6761            } else {
6762                if (dir < 0) {
6763                    scrollx = right - hspace;
6764                } else {
6765                    scrollx = left;
6766                }
6767            }
6768        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6769            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6770            scrollx = right - hspace;
6771        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6772            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6773        }
6774
6775        if (ht < vspace) {
6776            scrolly = 0;
6777        } else {
6778            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6779                scrolly = ht - vspace;
6780            } else {
6781                scrolly = 0;
6782            }
6783        }
6784
6785        if (scrollx != mScrollX || scrolly != mScrollY) {
6786            scrollTo(scrollx, scrolly);
6787            return true;
6788        } else {
6789            return false;
6790        }
6791    }
6792
6793    /**
6794     * Move the point, specified by the offset, into the view if it is needed.
6795     * This has to be called after layout. Returns true if anything changed.
6796     */
6797    public boolean bringPointIntoView(int offset) {
6798        if (isLayoutRequested()) {
6799            mDeferScroll = offset;
6800            return false;
6801        }
6802        boolean changed = false;
6803
6804        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6805
6806        if (layout == null) return changed;
6807
6808        int line = layout.getLineForOffset(offset);
6809
6810        int grav;
6811
6812        switch (layout.getParagraphAlignment(line)) {
6813            case ALIGN_LEFT:
6814                grav = 1;
6815                break;
6816            case ALIGN_RIGHT:
6817                grav = -1;
6818                break;
6819            case ALIGN_NORMAL:
6820                grav = layout.getParagraphDirection(line);
6821                break;
6822            case ALIGN_OPPOSITE:
6823                grav = -layout.getParagraphDirection(line);
6824                break;
6825            case ALIGN_CENTER:
6826            default:
6827                grav = 0;
6828                break;
6829        }
6830
6831        // We only want to clamp the cursor to fit within the layout width
6832        // in left-to-right modes, because in a right to left alignment,
6833        // we want to scroll to keep the line-right on the screen, as other
6834        // lines are likely to have text flush with the right margin, which
6835        // we want to keep visible.
6836        // A better long-term solution would probably be to measure both
6837        // the full line and a blank-trimmed version, and, for example, use
6838        // the latter measurement for centering and right alignment, but for
6839        // the time being we only implement the cursor clamping in left to
6840        // right where it is most likely to be annoying.
6841        final boolean clamped = grav > 0;
6842        // FIXME: Is it okay to truncate this, or should we round?
6843        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
6844        final int top = layout.getLineTop(line);
6845        final int bottom = layout.getLineTop(line + 1);
6846
6847        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6848        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6849        int ht = layout.getHeight();
6850
6851        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6852        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6853        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
6854            // If cursor has been clamped, make sure we don't scroll.
6855            right = Math.max(x, left + hspace);
6856        }
6857
6858        int hslack = (bottom - top) / 2;
6859        int vslack = hslack;
6860
6861        if (vslack > vspace / 4)
6862            vslack = vspace / 4;
6863        if (hslack > hspace / 4)
6864            hslack = hspace / 4;
6865
6866        int hs = mScrollX;
6867        int vs = mScrollY;
6868
6869        if (top - vs < vslack)
6870            vs = top - vslack;
6871        if (bottom - vs > vspace - vslack)
6872            vs = bottom - (vspace - vslack);
6873        if (ht - vs < vspace)
6874            vs = ht - vspace;
6875        if (0 - vs > 0)
6876            vs = 0;
6877
6878        if (grav != 0) {
6879            if (x - hs < hslack) {
6880                hs = x - hslack;
6881            }
6882            if (x - hs > hspace - hslack) {
6883                hs = x - (hspace - hslack);
6884            }
6885        }
6886
6887        if (grav < 0) {
6888            if (left - hs > 0)
6889                hs = left;
6890            if (right - hs < hspace)
6891                hs = right - hspace;
6892        } else if (grav > 0) {
6893            if (right - hs < hspace)
6894                hs = right - hspace;
6895            if (left - hs > 0)
6896                hs = left;
6897        } else /* grav == 0 */ {
6898            if (right - left <= hspace) {
6899                /*
6900                 * If the entire text fits, center it exactly.
6901                 */
6902                hs = left - (hspace - (right - left)) / 2;
6903            } else if (x > right - hslack) {
6904                /*
6905                 * If we are near the right edge, keep the right edge
6906                 * at the edge of the view.
6907                 */
6908                hs = right - hspace;
6909            } else if (x < left + hslack) {
6910                /*
6911                 * If we are near the left edge, keep the left edge
6912                 * at the edge of the view.
6913                 */
6914                hs = left;
6915            } else if (left > hs) {
6916                /*
6917                 * Is there whitespace visible at the left?  Fix it if so.
6918                 */
6919                hs = left;
6920            } else if (right < hs + hspace) {
6921                /*
6922                 * Is there whitespace visible at the right?  Fix it if so.
6923                 */
6924                hs = right - hspace;
6925            } else {
6926                /*
6927                 * Otherwise, float as needed.
6928                 */
6929                if (x - hs < hslack) {
6930                    hs = x - hslack;
6931                }
6932                if (x - hs > hspace - hslack) {
6933                    hs = x - (hspace - hslack);
6934                }
6935            }
6936        }
6937
6938        if (hs != mScrollX || vs != mScrollY) {
6939            if (mScroller == null) {
6940                scrollTo(hs, vs);
6941            } else {
6942                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6943                int dx = hs - mScrollX;
6944                int dy = vs - mScrollY;
6945
6946                if (duration > ANIMATED_SCROLL_GAP) {
6947                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6948                    awakenScrollBars(mScroller.getDuration());
6949                    invalidate();
6950                } else {
6951                    if (!mScroller.isFinished()) {
6952                        mScroller.abortAnimation();
6953                    }
6954
6955                    scrollBy(dx, dy);
6956                }
6957
6958                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6959            }
6960
6961            changed = true;
6962        }
6963
6964        if (isFocused()) {
6965            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6966            // requestRectangleOnScreen() is in terms of content coordinates.
6967
6968            // The offsets here are to ensure the rectangle we are using is
6969            // within our view bounds, in case the cursor is on the far left
6970            // or right.  If it isn't withing the bounds, then this request
6971            // will be ignored.
6972            if (mTempRect == null) mTempRect = new Rect();
6973            mTempRect.set(x - 2, top, x + 2, bottom);
6974            getInterestingRect(mTempRect, line);
6975            mTempRect.offset(mScrollX, mScrollY);
6976
6977            if (requestRectangleOnScreen(mTempRect)) {
6978                changed = true;
6979            }
6980        }
6981
6982        return changed;
6983    }
6984
6985    /**
6986     * Move the cursor, if needed, so that it is at an offset that is visible
6987     * to the user.  This will not move the cursor if it represents more than
6988     * one character (a selection range).  This will only work if the
6989     * TextView contains spannable text; otherwise it will do nothing.
6990     *
6991     * @return True if the cursor was actually moved, false otherwise.
6992     */
6993    public boolean moveCursorToVisibleOffset() {
6994        if (!(mText instanceof Spannable)) {
6995            return false;
6996        }
6997        int start = getSelectionStart();
6998        int end = getSelectionEnd();
6999        if (start != end) {
7000            return false;
7001        }
7002
7003        // First: make sure the line is visible on screen:
7004
7005        int line = mLayout.getLineForOffset(start);
7006
7007        final int top = mLayout.getLineTop(line);
7008        final int bottom = mLayout.getLineTop(line + 1);
7009        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7010        int vslack = (bottom - top) / 2;
7011        if (vslack > vspace / 4)
7012            vslack = vspace / 4;
7013        final int vs = mScrollY;
7014
7015        if (top < (vs+vslack)) {
7016            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7017        } else if (bottom > (vspace+vs-vslack)) {
7018            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7019        }
7020
7021        // Next: make sure the character is visible on screen:
7022
7023        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7024        final int hs = mScrollX;
7025        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7026        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7027
7028        // line might contain bidirectional text
7029        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7030        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7031
7032        int newStart = start;
7033        if (newStart < lowChar) {
7034            newStart = lowChar;
7035        } else if (newStart > highChar) {
7036            newStart = highChar;
7037        }
7038
7039        if (newStart != start) {
7040            Selection.setSelection((Spannable)mText, newStart);
7041            return true;
7042        }
7043
7044        return false;
7045    }
7046
7047    @Override
7048    public void computeScroll() {
7049        if (mScroller != null) {
7050            if (mScroller.computeScrollOffset()) {
7051                mScrollX = mScroller.getCurrX();
7052                mScrollY = mScroller.getCurrY();
7053                invalidateParentCaches();
7054                postInvalidate();  // So we draw again
7055            }
7056        }
7057    }
7058
7059    private void getInterestingRect(Rect r, int line) {
7060        convertFromViewportToContentCoordinates(r);
7061
7062        // Rectangle can can be expanded on first and last line to take
7063        // padding into account.
7064        // TODO Take left/right padding into account too?
7065        if (line == 0) r.top -= getExtendedPaddingTop();
7066        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7067    }
7068
7069    private void convertFromViewportToContentCoordinates(Rect r) {
7070        final int horizontalOffset = viewportToContentHorizontalOffset();
7071        r.left += horizontalOffset;
7072        r.right += horizontalOffset;
7073
7074        final int verticalOffset = viewportToContentVerticalOffset();
7075        r.top += verticalOffset;
7076        r.bottom += verticalOffset;
7077    }
7078
7079    int viewportToContentHorizontalOffset() {
7080        return getCompoundPaddingLeft() - mScrollX;
7081    }
7082
7083    int viewportToContentVerticalOffset() {
7084        int offset = getExtendedPaddingTop() - mScrollY;
7085        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7086            offset += getVerticalOffset(false);
7087        }
7088        return offset;
7089    }
7090
7091    @Override
7092    public void debug(int depth) {
7093        super.debug(depth);
7094
7095        String output = debugIndent(depth);
7096        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7097                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7098                + "} ";
7099
7100        if (mText != null) {
7101
7102            output += "mText=\"" + mText + "\" ";
7103            if (mLayout != null) {
7104                output += "mLayout width=" + mLayout.getWidth()
7105                        + " height=" + mLayout.getHeight();
7106            }
7107        } else {
7108            output += "mText=NULL";
7109        }
7110        Log.d(VIEW_LOG_TAG, output);
7111    }
7112
7113    /**
7114     * Convenience for {@link Selection#getSelectionStart}.
7115     */
7116    @ViewDebug.ExportedProperty(category = "text")
7117    public int getSelectionStart() {
7118        return Selection.getSelectionStart(getText());
7119    }
7120
7121    /**
7122     * Convenience for {@link Selection#getSelectionEnd}.
7123     */
7124    @ViewDebug.ExportedProperty(category = "text")
7125    public int getSelectionEnd() {
7126        return Selection.getSelectionEnd(getText());
7127    }
7128
7129    /**
7130     * Return true iff there is a selection inside this text view.
7131     */
7132    public boolean hasSelection() {
7133        final int selectionStart = getSelectionStart();
7134        final int selectionEnd = getSelectionEnd();
7135
7136        return selectionStart >= 0 && selectionStart != selectionEnd;
7137    }
7138
7139    /**
7140     * Sets the properties of this field (lines, horizontally scrolling,
7141     * transformation method) to be for a single-line input.
7142     *
7143     * @attr ref android.R.styleable#TextView_singleLine
7144     */
7145    public void setSingleLine() {
7146        setSingleLine(true);
7147    }
7148
7149    /**
7150     * Sets the properties of this field to transform input to ALL CAPS
7151     * display. This may use a "small caps" formatting if available.
7152     * This setting will be ignored if this field is editable or selectable.
7153     *
7154     * This call replaces the current transformation method. Disabling this
7155     * will not necessarily restore the previous behavior from before this
7156     * was enabled.
7157     *
7158     * @see #setTransformationMethod(TransformationMethod)
7159     * @attr ref android.R.styleable#TextView_textAllCaps
7160     */
7161    public void setAllCaps(boolean allCaps) {
7162        if (allCaps) {
7163            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7164        } else {
7165            setTransformationMethod(null);
7166        }
7167    }
7168
7169    /**
7170     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7171     * transformation method) to be for a single-line input; if false, restores these to the default
7172     * conditions.
7173     *
7174     * Note that the default conditions are not necessarily those that were in effect prior this
7175     * method, and you may want to reset these properties to your custom values.
7176     *
7177     * @attr ref android.R.styleable#TextView_singleLine
7178     */
7179    @android.view.RemotableViewMethod
7180    public void setSingleLine(boolean singleLine) {
7181        // Could be used, but may break backward compatibility.
7182        // if (mSingleLine == singleLine) return;
7183        setInputTypeSingleLine(singleLine);
7184        applySingleLine(singleLine, true, true);
7185    }
7186
7187    /**
7188     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7189     * @param singleLine
7190     */
7191    private void setInputTypeSingleLine(boolean singleLine) {
7192        if (mEditor != null &&
7193                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7194            if (singleLine) {
7195                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7196            } else {
7197                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7198            }
7199        }
7200    }
7201
7202    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7203            boolean changeMaxLines) {
7204        mSingleLine = singleLine;
7205        if (singleLine) {
7206            setLines(1);
7207            setHorizontallyScrolling(true);
7208            if (applyTransformation) {
7209                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7210            }
7211        } else {
7212            if (changeMaxLines) {
7213                setMaxLines(Integer.MAX_VALUE);
7214            }
7215            setHorizontallyScrolling(false);
7216            if (applyTransformation) {
7217                setTransformationMethod(null);
7218            }
7219        }
7220    }
7221
7222    /**
7223     * Causes words in the text that are longer than the view is wide
7224     * to be ellipsized instead of broken in the middle.  You may also
7225     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7226     * to constrain the text to a single line.  Use <code>null</code>
7227     * to turn off ellipsizing.
7228     *
7229     * If {@link #setMaxLines} has been used to set two or more lines,
7230     * {@link android.text.TextUtils.TruncateAt#END} and
7231     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
7232     * (other ellipsizing types will not do anything).
7233     *
7234     * @attr ref android.R.styleable#TextView_ellipsize
7235     */
7236    public void setEllipsize(TextUtils.TruncateAt where) {
7237        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7238        if (mEllipsize != where) {
7239            mEllipsize = where;
7240
7241            if (mLayout != null) {
7242                nullLayouts();
7243                requestLayout();
7244                invalidate();
7245            }
7246        }
7247    }
7248
7249    /**
7250     * Sets how many times to repeat the marquee animation. Only applied if the
7251     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7252     *
7253     * @see #getMarqueeRepeatLimit()
7254     *
7255     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7256     */
7257    public void setMarqueeRepeatLimit(int marqueeLimit) {
7258        mMarqueeRepeatLimit = marqueeLimit;
7259    }
7260
7261    /**
7262     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7263     * TextView has marquee enabled.
7264     *
7265     * @return the number of times the marquee animation is repeated. -1 if the animation
7266     * repeats indefinitely
7267     *
7268     * @see #setMarqueeRepeatLimit(int)
7269     *
7270     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7271     */
7272    public int getMarqueeRepeatLimit() {
7273        return mMarqueeRepeatLimit;
7274    }
7275
7276    /**
7277     * Returns where, if anywhere, words that are longer than the view
7278     * is wide should be ellipsized.
7279     */
7280    @ViewDebug.ExportedProperty
7281    public TextUtils.TruncateAt getEllipsize() {
7282        return mEllipsize;
7283    }
7284
7285    /**
7286     * Set the TextView so that when it takes focus, all the text is
7287     * selected.
7288     *
7289     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7290     */
7291    @android.view.RemotableViewMethod
7292    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7293        createEditorIfNeeded();
7294        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7295
7296        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7297            setText(mText, BufferType.SPANNABLE);
7298        }
7299    }
7300
7301    /**
7302     * Set whether the cursor is visible. The default is true. Note that this property only
7303     * makes sense for editable TextView.
7304     *
7305     * @see #isCursorVisible()
7306     *
7307     * @attr ref android.R.styleable#TextView_cursorVisible
7308     */
7309    @android.view.RemotableViewMethod
7310    public void setCursorVisible(boolean visible) {
7311        if (visible && mEditor == null) return; // visible is the default value with no edit data
7312        createEditorIfNeeded();
7313        if (mEditor.mCursorVisible != visible) {
7314            mEditor.mCursorVisible = visible;
7315            invalidate();
7316
7317            mEditor.makeBlink();
7318
7319            // InsertionPointCursorController depends on mCursorVisible
7320            mEditor.prepareCursorControllers();
7321        }
7322    }
7323
7324    /**
7325     * @return whether or not the cursor is visible (assuming this TextView is editable)
7326     *
7327     * @see #setCursorVisible(boolean)
7328     *
7329     * @attr ref android.R.styleable#TextView_cursorVisible
7330     */
7331    public boolean isCursorVisible() {
7332        // true is the default value
7333        return mEditor == null ? true : mEditor.mCursorVisible;
7334    }
7335
7336    private boolean canMarquee() {
7337        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7338        return width > 0 && (mLayout.getLineWidth(0) > width ||
7339                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7340                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7341    }
7342
7343    private void startMarquee() {
7344        // Do not ellipsize EditText
7345        if (getKeyListener() != null) return;
7346
7347        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7348            return;
7349        }
7350
7351        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7352                getLineCount() == 1 && canMarquee()) {
7353
7354            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7355                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7356                final Layout tmp = mLayout;
7357                mLayout = mSavedMarqueeModeLayout;
7358                mSavedMarqueeModeLayout = tmp;
7359                setHorizontalFadingEdgeEnabled(true);
7360                requestLayout();
7361                invalidate();
7362            }
7363
7364            if (mMarquee == null) mMarquee = new Marquee(this);
7365            mMarquee.start(mMarqueeRepeatLimit);
7366        }
7367    }
7368
7369    private void stopMarquee() {
7370        if (mMarquee != null && !mMarquee.isStopped()) {
7371            mMarquee.stop();
7372        }
7373
7374        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7375            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7376            final Layout tmp = mSavedMarqueeModeLayout;
7377            mSavedMarqueeModeLayout = mLayout;
7378            mLayout = tmp;
7379            setHorizontalFadingEdgeEnabled(false);
7380            requestLayout();
7381            invalidate();
7382        }
7383    }
7384
7385    private void startStopMarquee(boolean start) {
7386        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7387            if (start) {
7388                startMarquee();
7389            } else {
7390                stopMarquee();
7391            }
7392        }
7393    }
7394
7395    /**
7396     * This method is called when the text is changed, in case any subclasses
7397     * would like to know.
7398     *
7399     * Within <code>text</code>, the <code>lengthAfter</code> characters
7400     * beginning at <code>start</code> have just replaced old text that had
7401     * length <code>lengthBefore</code>. It is an error to attempt to make
7402     * changes to <code>text</code> from this callback.
7403     *
7404     * @param text The text the TextView is displaying
7405     * @param start The offset of the start of the range of the text that was
7406     * modified
7407     * @param lengthBefore The length of the former text that has been replaced
7408     * @param lengthAfter The length of the replacement modified text
7409     */
7410    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7411        // intentionally empty, template pattern method can be overridden by subclasses
7412    }
7413
7414    /**
7415     * This method is called when the selection has changed, in case any
7416     * subclasses would like to know.
7417     *
7418     * @param selStart The new selection start location.
7419     * @param selEnd The new selection end location.
7420     */
7421    protected void onSelectionChanged(int selStart, int selEnd) {
7422        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7423    }
7424
7425    /**
7426     * Adds a TextWatcher to the list of those whose methods are called
7427     * whenever this TextView's text changes.
7428     * <p>
7429     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7430     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7431     * if there are any text changed listeners forces the buffer type to
7432     * Editable if it would not otherwise be and does call this method.
7433     */
7434    public void addTextChangedListener(TextWatcher watcher) {
7435        if (mListeners == null) {
7436            mListeners = new ArrayList<TextWatcher>();
7437        }
7438
7439        mListeners.add(watcher);
7440    }
7441
7442    /**
7443     * Removes the specified TextWatcher from the list of those whose
7444     * methods are called
7445     * whenever this TextView's text changes.
7446     */
7447    public void removeTextChangedListener(TextWatcher watcher) {
7448        if (mListeners != null) {
7449            int i = mListeners.indexOf(watcher);
7450
7451            if (i >= 0) {
7452                mListeners.remove(i);
7453            }
7454        }
7455    }
7456
7457    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7458        if (mListeners != null) {
7459            final ArrayList<TextWatcher> list = mListeners;
7460            final int count = list.size();
7461            for (int i = 0; i < count; i++) {
7462                list.get(i).beforeTextChanged(text, start, before, after);
7463            }
7464        }
7465
7466        // The spans that are inside or intersect the modified region no longer make sense
7467        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
7468        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
7469    }
7470
7471    // Removes all spans that are inside or actually overlap the start..end range
7472    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
7473        if (!(mText instanceof Editable)) return;
7474        Editable text = (Editable) mText;
7475
7476        T[] spans = text.getSpans(start, end, type);
7477        final int length = spans.length;
7478        for (int i = 0; i < length; i++) {
7479            final int spanStart = text.getSpanStart(spans[i]);
7480            final int spanEnd = text.getSpanEnd(spans[i]);
7481            if (spanEnd == start || spanStart == end) break;
7482            text.removeSpan(spans[i]);
7483        }
7484    }
7485
7486    void removeAdjacentSuggestionSpans(final int pos) {
7487        if (!(mText instanceof Editable)) return;
7488        final Editable text = (Editable) mText;
7489
7490        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
7491        final int length = spans.length;
7492        for (int i = 0; i < length; i++) {
7493            final int spanStart = text.getSpanStart(spans[i]);
7494            final int spanEnd = text.getSpanEnd(spans[i]);
7495            if (spanEnd == pos || spanStart == pos) {
7496                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
7497                    text.removeSpan(spans[i]);
7498                }
7499            }
7500        }
7501    }
7502
7503    /**
7504     * Not private so it can be called from an inner class without going
7505     * through a thunk.
7506     */
7507    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7508        if (mListeners != null) {
7509            final ArrayList<TextWatcher> list = mListeners;
7510            final int count = list.size();
7511            for (int i = 0; i < count; i++) {
7512                list.get(i).onTextChanged(text, start, before, after);
7513            }
7514        }
7515
7516        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7517    }
7518
7519    /**
7520     * Not private so it can be called from an inner class without going
7521     * through a thunk.
7522     */
7523    void sendAfterTextChanged(Editable text) {
7524        if (mListeners != null) {
7525            final ArrayList<TextWatcher> list = mListeners;
7526            final int count = list.size();
7527            for (int i = 0; i < count; i++) {
7528                list.get(i).afterTextChanged(text);
7529            }
7530        }
7531    }
7532
7533    void updateAfterEdit() {
7534        invalidate();
7535        int curs = getSelectionStart();
7536
7537        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7538            registerForPreDraw();
7539        }
7540
7541        checkForResize();
7542
7543        if (curs >= 0) {
7544            mHighlightPathBogus = true;
7545            if (mEditor != null) mEditor.makeBlink();
7546            bringPointIntoView(curs);
7547        }
7548    }
7549
7550    /**
7551     * Not private so it can be called from an inner class without going
7552     * through a thunk.
7553     */
7554    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7555        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7556        if (ims == null || ims.mBatchEditNesting == 0) {
7557            updateAfterEdit();
7558        }
7559        if (ims != null) {
7560            ims.mContentChanged = true;
7561            if (ims.mChangedStart < 0) {
7562                ims.mChangedStart = start;
7563                ims.mChangedEnd = start+before;
7564            } else {
7565                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7566                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7567            }
7568            ims.mChangedDelta += after-before;
7569        }
7570
7571        sendOnTextChanged(buffer, start, before, after);
7572        onTextChanged(buffer, start, before, after);
7573    }
7574
7575    /**
7576     * Not private so it can be called from an inner class without going
7577     * through a thunk.
7578     */
7579    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7580        // XXX Make the start and end move together if this ends up
7581        // spending too much time invalidating.
7582
7583        boolean selChanged = false;
7584        int newSelStart=-1, newSelEnd=-1;
7585
7586        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7587
7588        if (what == Selection.SELECTION_END) {
7589            selChanged = true;
7590            newSelEnd = newStart;
7591
7592            if (oldStart >= 0 || newStart >= 0) {
7593                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7594                checkForResize();
7595                registerForPreDraw();
7596                if (mEditor != null) mEditor.makeBlink();
7597            }
7598        }
7599
7600        if (what == Selection.SELECTION_START) {
7601            selChanged = true;
7602            newSelStart = newStart;
7603
7604            if (oldStart >= 0 || newStart >= 0) {
7605                int end = Selection.getSelectionEnd(buf);
7606                invalidateCursor(end, oldStart, newStart);
7607            }
7608        }
7609
7610        if (selChanged) {
7611            mHighlightPathBogus = true;
7612            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7613
7614            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7615                if (newSelStart < 0) {
7616                    newSelStart = Selection.getSelectionStart(buf);
7617                }
7618                if (newSelEnd < 0) {
7619                    newSelEnd = Selection.getSelectionEnd(buf);
7620                }
7621                onSelectionChanged(newSelStart, newSelEnd);
7622            }
7623        }
7624
7625        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7626                what instanceof CharacterStyle) {
7627            if (ims == null || ims.mBatchEditNesting == 0) {
7628                invalidate();
7629                mHighlightPathBogus = true;
7630                checkForResize();
7631            } else {
7632                ims.mContentChanged = true;
7633            }
7634            if (mEditor != null) {
7635                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7636                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7637            }
7638        }
7639
7640        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7641            mHighlightPathBogus = true;
7642            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7643                ims.mSelectionModeChanged = true;
7644            }
7645
7646            if (Selection.getSelectionStart(buf) >= 0) {
7647                if (ims == null || ims.mBatchEditNesting == 0) {
7648                    invalidateCursor();
7649                } else {
7650                    ims.mCursorChanged = true;
7651                }
7652            }
7653        }
7654
7655        if (what instanceof ParcelableSpan) {
7656            // If this is a span that can be sent to a remote process,
7657            // the current extract editor would be interested in it.
7658            if (ims != null && ims.mExtractedTextRequest != null) {
7659                if (ims.mBatchEditNesting != 0) {
7660                    if (oldStart >= 0) {
7661                        if (ims.mChangedStart > oldStart) {
7662                            ims.mChangedStart = oldStart;
7663                        }
7664                        if (ims.mChangedStart > oldEnd) {
7665                            ims.mChangedStart = oldEnd;
7666                        }
7667                    }
7668                    if (newStart >= 0) {
7669                        if (ims.mChangedStart > newStart) {
7670                            ims.mChangedStart = newStart;
7671                        }
7672                        if (ims.mChangedStart > newEnd) {
7673                            ims.mChangedStart = newEnd;
7674                        }
7675                    }
7676                } else {
7677                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7678                            + oldStart + "-" + oldEnd + ","
7679                            + newStart + "-" + newEnd + " " + what);
7680                    ims.mContentChanged = true;
7681                }
7682            }
7683        }
7684
7685        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7686                what instanceof SpellCheckSpan) {
7687            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7688        }
7689    }
7690
7691    /**
7692     * @hide
7693     */
7694    @Override
7695    public void dispatchFinishTemporaryDetach() {
7696        mDispatchTemporaryDetach = true;
7697        super.dispatchFinishTemporaryDetach();
7698        mDispatchTemporaryDetach = false;
7699    }
7700
7701    @Override
7702    public void onStartTemporaryDetach() {
7703        super.onStartTemporaryDetach();
7704        // Only track when onStartTemporaryDetach() is called directly,
7705        // usually because this instance is an editable field in a list
7706        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7707
7708        // Tell the editor that we are temporarily detached. It can use this to preserve
7709        // selection state as needed.
7710        if (mEditor != null) mEditor.mTemporaryDetach = true;
7711    }
7712
7713    @Override
7714    public void onFinishTemporaryDetach() {
7715        super.onFinishTemporaryDetach();
7716        // Only track when onStartTemporaryDetach() is called directly,
7717        // usually because this instance is an editable field in a list
7718        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7719        if (mEditor != null) mEditor.mTemporaryDetach = false;
7720    }
7721
7722    @Override
7723    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7724        if (mTemporaryDetach) {
7725            // If we are temporarily in the detach state, then do nothing.
7726            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7727            return;
7728        }
7729
7730        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7731
7732        if (focused) {
7733            if (mText instanceof Spannable) {
7734                Spannable sp = (Spannable) mText;
7735                MetaKeyKeyListener.resetMetaState(sp);
7736            }
7737        }
7738
7739        startStopMarquee(focused);
7740
7741        if (mTransformation != null) {
7742            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7743        }
7744
7745        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7746    }
7747
7748    @Override
7749    public void onWindowFocusChanged(boolean hasWindowFocus) {
7750        super.onWindowFocusChanged(hasWindowFocus);
7751
7752        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7753
7754        startStopMarquee(hasWindowFocus);
7755    }
7756
7757    @Override
7758    protected void onVisibilityChanged(View changedView, int visibility) {
7759        super.onVisibilityChanged(changedView, visibility);
7760        if (mEditor != null && visibility != VISIBLE) {
7761            mEditor.hideControllers();
7762        }
7763    }
7764
7765    /**
7766     * Use {@link BaseInputConnection#removeComposingSpans
7767     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7768     * state from this text view.
7769     */
7770    public void clearComposingText() {
7771        if (mText instanceof Spannable) {
7772            BaseInputConnection.removeComposingSpans((Spannable)mText);
7773        }
7774    }
7775
7776    @Override
7777    public void setSelected(boolean selected) {
7778        boolean wasSelected = isSelected();
7779
7780        super.setSelected(selected);
7781
7782        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7783            if (selected) {
7784                startMarquee();
7785            } else {
7786                stopMarquee();
7787            }
7788        }
7789    }
7790
7791    @Override
7792    public boolean onTouchEvent(MotionEvent event) {
7793        final int action = event.getActionMasked();
7794
7795        if (mEditor != null) mEditor.onTouchEvent(event);
7796
7797        final boolean superResult = super.onTouchEvent(event);
7798
7799        /*
7800         * Don't handle the release after a long press, because it will
7801         * move the selection away from whatever the menu action was
7802         * trying to affect.
7803         */
7804        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7805            mEditor.mDiscardNextActionUp = false;
7806            return superResult;
7807        }
7808
7809        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7810                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7811
7812         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7813                && mText instanceof Spannable && mLayout != null) {
7814            boolean handled = false;
7815
7816            if (mMovement != null) {
7817                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7818            }
7819
7820            final boolean textIsSelectable = isTextSelectable();
7821            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7822                // The LinkMovementMethod which should handle taps on links has not been installed
7823                // on non editable text that support text selection.
7824                // We reproduce its behavior here to open links for these.
7825                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7826                        getSelectionEnd(), ClickableSpan.class);
7827
7828                if (links.length > 0) {
7829                    links[0].onClick(this);
7830                    handled = true;
7831                }
7832            }
7833
7834            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7835                // Show the IME, except when selecting in read-only text.
7836                final InputMethodManager imm = InputMethodManager.peekInstance();
7837                viewClicked(imm);
7838                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7839                    handled |= imm != null && imm.showSoftInput(this, 0);
7840                }
7841
7842                // The above condition ensures that the mEditor is not null
7843                mEditor.onTouchUpEvent(event);
7844
7845                handled = true;
7846            }
7847
7848            if (handled) {
7849                return true;
7850            }
7851        }
7852
7853        return superResult;
7854    }
7855
7856    @Override
7857    public boolean onGenericMotionEvent(MotionEvent event) {
7858        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7859            try {
7860                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7861                    return true;
7862                }
7863            } catch (AbstractMethodError ex) {
7864                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7865                // Ignore its absence in case third party applications implemented the
7866                // interface directly.
7867            }
7868        }
7869        return super.onGenericMotionEvent(event);
7870    }
7871
7872    /**
7873     * @return True iff this TextView contains a text that can be edited, or if this is
7874     * a selectable TextView.
7875     */
7876    boolean isTextEditable() {
7877        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7878    }
7879
7880    /**
7881     * Returns true, only while processing a touch gesture, if the initial
7882     * touch down event caused focus to move to the text view and as a result
7883     * its selection changed.  Only valid while processing the touch gesture
7884     * of interest, in an editable text view.
7885     */
7886    public boolean didTouchFocusSelect() {
7887        return mEditor != null && mEditor.mTouchFocusSelected;
7888    }
7889
7890    @Override
7891    public void cancelLongPress() {
7892        super.cancelLongPress();
7893        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7894    }
7895
7896    @Override
7897    public boolean onTrackballEvent(MotionEvent event) {
7898        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7899            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7900                return true;
7901            }
7902        }
7903
7904        return super.onTrackballEvent(event);
7905    }
7906
7907    public void setScroller(Scroller s) {
7908        mScroller = s;
7909    }
7910
7911    @Override
7912    protected float getLeftFadingEdgeStrength() {
7913        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7914                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7915            if (mMarquee != null && !mMarquee.isStopped()) {
7916                final Marquee marquee = mMarquee;
7917                if (marquee.shouldDrawLeftFade()) {
7918                    final float scroll = marquee.getScroll();
7919                    return scroll / getHorizontalFadingEdgeLength();
7920                } else {
7921                    return 0.0f;
7922                }
7923            } else if (getLineCount() == 1) {
7924                final int layoutDirection = getLayoutDirection();
7925                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7926                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7927                    case Gravity.LEFT:
7928                        return 0.0f;
7929                    case Gravity.RIGHT:
7930                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7931                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7932                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7933                    case Gravity.CENTER_HORIZONTAL:
7934                    case Gravity.FILL_HORIZONTAL:
7935                        final int textDirection = mLayout.getParagraphDirection(0);
7936                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
7937                            return 0.0f;
7938                        } else {
7939                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
7940                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7941                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7942                        }
7943                }
7944            }
7945        }
7946        return super.getLeftFadingEdgeStrength();
7947    }
7948
7949    @Override
7950    protected float getRightFadingEdgeStrength() {
7951        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7952                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7953            if (mMarquee != null && !mMarquee.isStopped()) {
7954                final Marquee marquee = mMarquee;
7955                final float maxFadeScroll = marquee.getMaxFadeScroll();
7956                final float scroll = marquee.getScroll();
7957                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
7958            } else if (getLineCount() == 1) {
7959                final int layoutDirection = getLayoutDirection();
7960                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7961                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7962                    case Gravity.LEFT:
7963                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7964                                getCompoundPaddingRight();
7965                        final float lineWidth = mLayout.getLineWidth(0);
7966                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7967                    case Gravity.RIGHT:
7968                        return 0.0f;
7969                    case Gravity.CENTER_HORIZONTAL:
7970                    case Gravity.FILL_HORIZONTAL:
7971                        final int textDirection = mLayout.getParagraphDirection(0);
7972                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
7973                            return 0.0f;
7974                        } else {
7975                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7976                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7977                                getHorizontalFadingEdgeLength();
7978                        }
7979                }
7980            }
7981        }
7982        return super.getRightFadingEdgeStrength();
7983    }
7984
7985    @Override
7986    protected int computeHorizontalScrollRange() {
7987        if (mLayout != null) {
7988            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7989                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7990        }
7991
7992        return super.computeHorizontalScrollRange();
7993    }
7994
7995    @Override
7996    protected int computeVerticalScrollRange() {
7997        if (mLayout != null)
7998            return mLayout.getHeight();
7999
8000        return super.computeVerticalScrollRange();
8001    }
8002
8003    @Override
8004    protected int computeVerticalScrollExtent() {
8005        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8006    }
8007
8008    @Override
8009    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8010        super.findViewsWithText(outViews, searched, flags);
8011        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8012                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8013            String searchedLowerCase = searched.toString().toLowerCase();
8014            String textLowerCase = mText.toString().toLowerCase();
8015            if (textLowerCase.contains(searchedLowerCase)) {
8016                outViews.add(this);
8017            }
8018        }
8019    }
8020
8021    public enum BufferType {
8022        NORMAL, SPANNABLE, EDITABLE,
8023    }
8024
8025    /**
8026     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8027     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8028     * if TextView_textColor was not set directly.
8029     */
8030    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8031        // It's not safe to use this method from apps. The parameter 'attrs'
8032        // must have been obtained using the TextView filter array which is not
8033        // available to the SDK. As such, we grab a default TypedArray with the
8034        // right filter instead here.
8035        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8036        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8037        if (colors == null) {
8038            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8039            if (ap != 0) {
8040                final TypedArray appearance = context.obtainStyledAttributes(
8041                        ap, R.styleable.TextAppearance);
8042                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8043                appearance.recycle();
8044            }
8045        }
8046        a.recycle();
8047
8048        return colors;
8049    }
8050
8051    /**
8052     * Returns the default color from the TextView_textColor attribute from the
8053     * AttributeSet, if set, or the default color from the
8054     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8055     * TextView_textColor was not set directly.
8056     */
8057    public static int getTextColor(Context context, TypedArray attrs, int def) {
8058        final ColorStateList colors = getTextColors(context, attrs);
8059        if (colors == null) {
8060            return def;
8061        } else {
8062            return colors.getDefaultColor();
8063        }
8064    }
8065
8066    @Override
8067    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8068        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
8069        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
8070            switch (keyCode) {
8071            case KeyEvent.KEYCODE_A:
8072                if (canSelectText()) {
8073                    return onTextContextMenuItem(ID_SELECT_ALL);
8074                }
8075                break;
8076            case KeyEvent.KEYCODE_X:
8077                if (canCut()) {
8078                    return onTextContextMenuItem(ID_CUT);
8079                }
8080                break;
8081            case KeyEvent.KEYCODE_C:
8082                if (canCopy()) {
8083                    return onTextContextMenuItem(ID_COPY);
8084                }
8085                break;
8086            case KeyEvent.KEYCODE_V:
8087                if (canPaste()) {
8088                    return onTextContextMenuItem(ID_PASTE);
8089                }
8090                break;
8091            }
8092        }
8093        return super.onKeyShortcut(keyCode, event);
8094    }
8095
8096    /**
8097     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8098     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8099     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8100     * sufficient.
8101     */
8102    private boolean canSelectText() {
8103        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8104    }
8105
8106    /**
8107     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8108     * The text must be spannable and the movement method must allow for arbitary selection.
8109     *
8110     * See also {@link #canSelectText()}.
8111     */
8112    boolean textCanBeSelected() {
8113        // prepareCursorController() relies on this method.
8114        // If you change this condition, make sure prepareCursorController is called anywhere
8115        // the value of this condition might be changed.
8116        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8117        return isTextEditable() ||
8118                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8119    }
8120
8121    private Locale getTextServicesLocale(boolean allowNullLocale) {
8122        // Start fetching the text services locale asynchronously.
8123        updateTextServicesLocaleAsync();
8124        // If !allowNullLocale and there is no cached text services locale, just return the default
8125        // locale.
8126        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8127                : mCurrentSpellCheckerLocaleCache;
8128    }
8129
8130    /**
8131     * This is a temporary method. Future versions may support multi-locale text.
8132     * Caveat: This method may not return the latest text services locale, but this should be
8133     * acceptable and it's more important to make this method asynchronous.
8134     *
8135     * @return The locale that should be used for a word iterator
8136     * in this TextView, based on the current spell checker settings,
8137     * the current IME's locale, or the system default locale.
8138     * Please note that a word iterator in this TextView is different from another word iterator
8139     * used by SpellChecker.java of TextView. This method should be used for the former.
8140     * @hide
8141     */
8142    // TODO: Support multi-locale
8143    // TODO: Update the text services locale immediately after the keyboard locale is switched
8144    // by catching intent of keyboard switch event
8145    public Locale getTextServicesLocale() {
8146        return getTextServicesLocale(false /* allowNullLocale */);
8147    }
8148
8149    /**
8150     * This is a temporary method. Future versions may support multi-locale text.
8151     * Caveat: This method may not return the latest spell checker locale, but this should be
8152     * acceptable and it's more important to make this method asynchronous.
8153     *
8154     * @return The locale that should be used for a spell checker in this TextView,
8155     * based on the current spell checker settings, the current IME's locale, or the system default
8156     * locale.
8157     * @hide
8158     */
8159    public Locale getSpellCheckerLocale() {
8160        return getTextServicesLocale(true /* allowNullLocale */);
8161    }
8162
8163    private void updateTextServicesLocaleAsync() {
8164        // AsyncTask.execute() uses a serial executor which means we don't have
8165        // to lock around updateTextServicesLocaleLocked() to prevent it from
8166        // being executed n times in parallel.
8167        AsyncTask.execute(new Runnable() {
8168            @Override
8169            public void run() {
8170                updateTextServicesLocaleLocked();
8171            }
8172        });
8173    }
8174
8175    private void updateTextServicesLocaleLocked() {
8176        final TextServicesManager textServicesManager = (TextServicesManager)
8177                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8178        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8179        final Locale locale;
8180        if (subtype != null) {
8181            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
8182        } else {
8183            locale = null;
8184        }
8185        mCurrentSpellCheckerLocaleCache = locale;
8186    }
8187
8188    void onLocaleChanged() {
8189        // Will be re-created on demand in getWordIterator with the proper new locale
8190        mEditor.mWordIterator = null;
8191    }
8192
8193    /**
8194     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8195     * Made available to achieve a consistent behavior.
8196     * @hide
8197     */
8198    public WordIterator getWordIterator() {
8199        if (mEditor != null) {
8200            return mEditor.getWordIterator();
8201        } else {
8202            return null;
8203        }
8204    }
8205
8206    @Override
8207    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
8208        super.onPopulateAccessibilityEvent(event);
8209
8210        final boolean isPassword = hasPasswordTransformationMethod();
8211        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8212            final CharSequence text = getTextForAccessibility();
8213            if (!TextUtils.isEmpty(text)) {
8214                event.getText().add(text);
8215            }
8216        }
8217    }
8218
8219    /**
8220     * @return true if the user has explicitly allowed accessibility services
8221     * to speak passwords.
8222     */
8223    private boolean shouldSpeakPasswordsForAccessibility() {
8224        return (Settings.Secure.getInt(mContext.getContentResolver(),
8225                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
8226    }
8227
8228    @Override
8229    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
8230        super.onInitializeAccessibilityEvent(event);
8231
8232        event.setClassName(TextView.class.getName());
8233        final boolean isPassword = hasPasswordTransformationMethod();
8234        event.setPassword(isPassword);
8235
8236        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
8237            event.setFromIndex(Selection.getSelectionStart(mText));
8238            event.setToIndex(Selection.getSelectionEnd(mText));
8239            event.setItemCount(mText.length());
8240        }
8241    }
8242
8243    @Override
8244    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
8245        super.onInitializeAccessibilityNodeInfo(info);
8246
8247        info.setClassName(TextView.class.getName());
8248        final boolean isPassword = hasPasswordTransformationMethod();
8249        info.setPassword(isPassword);
8250
8251        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8252            info.setText(getTextForAccessibility());
8253        }
8254
8255        if (mBufferType == BufferType.EDITABLE) {
8256            info.setEditable(true);
8257        }
8258
8259        if (mEditor != null) {
8260            info.setInputType(mEditor.mInputType);
8261
8262            if (mEditor.mError != null) {
8263                info.setContentInvalid(true);
8264                info.setError(mEditor.mError);
8265            }
8266        }
8267
8268        if (!TextUtils.isEmpty(mText)) {
8269            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
8270            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
8271            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8272                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8273                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8274                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8275                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8276        }
8277
8278        if (isFocused()) {
8279            if (canSelectText()) {
8280                info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8281            }
8282            if (canCopy()) {
8283                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8284            }
8285            if (canPaste()) {
8286                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8287            }
8288            if (canCut()) {
8289                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8290            }
8291        }
8292
8293        if (!isSingleLine()) {
8294            info.setMultiLine(true);
8295        }
8296    }
8297
8298    @Override
8299    public boolean performAccessibilityAction(int action, Bundle arguments) {
8300        switch (action) {
8301            case AccessibilityNodeInfo.ACTION_COPY: {
8302                if (isFocused() && canCopy()) {
8303                    if (onTextContextMenuItem(ID_COPY)) {
8304                        return true;
8305                    }
8306                }
8307            } return false;
8308            case AccessibilityNodeInfo.ACTION_PASTE: {
8309                if (isFocused() && canPaste()) {
8310                    if (onTextContextMenuItem(ID_PASTE)) {
8311                        return true;
8312                    }
8313                }
8314            } return false;
8315            case AccessibilityNodeInfo.ACTION_CUT: {
8316                if (isFocused() && canCut()) {
8317                    if (onTextContextMenuItem(ID_CUT)) {
8318                        return true;
8319                    }
8320                }
8321            } return false;
8322            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
8323                if (isFocused() && canSelectText()) {
8324                    CharSequence text = getIterableTextForAccessibility();
8325                    if (text == null) {
8326                        return false;
8327                    }
8328                    final int start = (arguments != null) ? arguments.getInt(
8329                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
8330                    final int end = (arguments != null) ? arguments.getInt(
8331                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
8332                    if ((getSelectionStart() != start || getSelectionEnd() != end)) {
8333                        // No arguments clears the selection.
8334                        if (start == end && end == -1) {
8335                            Selection.removeSelection((Spannable) text);
8336                            return true;
8337                        }
8338                        if (start >= 0 && start <= end && end <= text.length()) {
8339                            Selection.setSelection((Spannable) text, start, end);
8340                            // Make sure selection mode is engaged.
8341                            if (mEditor != null) {
8342                                mEditor.startSelectionActionMode();
8343                            }
8344                            return true;
8345                        }
8346                    }
8347                }
8348            } return false;
8349            default: {
8350                return super.performAccessibilityAction(action, arguments);
8351            }
8352        }
8353    }
8354
8355    @Override
8356    public void sendAccessibilityEvent(int eventType) {
8357        // Do not send scroll events since first they are not interesting for
8358        // accessibility and second such events a generated too frequently.
8359        // For details see the implementation of bringTextIntoView().
8360        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
8361            return;
8362        }
8363        super.sendAccessibilityEvent(eventType);
8364    }
8365
8366    /**
8367     * Gets the text reported for accessibility purposes.
8368     *
8369     * @return The accessibility text.
8370     *
8371     * @hide
8372     */
8373    public CharSequence getTextForAccessibility() {
8374        CharSequence text = getText();
8375        if (TextUtils.isEmpty(text)) {
8376            text = getHint();
8377        }
8378        return text;
8379    }
8380
8381    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8382            int fromIndex, int removedCount, int addedCount) {
8383        AccessibilityEvent event =
8384            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8385        event.setFromIndex(fromIndex);
8386        event.setRemovedCount(removedCount);
8387        event.setAddedCount(addedCount);
8388        event.setBeforeText(beforeText);
8389        sendAccessibilityEventUnchecked(event);
8390    }
8391
8392    /**
8393     * Returns whether this text view is a current input method target.  The
8394     * default implementation just checks with {@link InputMethodManager}.
8395     */
8396    public boolean isInputMethodTarget() {
8397        InputMethodManager imm = InputMethodManager.peekInstance();
8398        return imm != null && imm.isActive(this);
8399    }
8400
8401    static final int ID_SELECT_ALL = android.R.id.selectAll;
8402    static final int ID_CUT = android.R.id.cut;
8403    static final int ID_COPY = android.R.id.copy;
8404    static final int ID_PASTE = android.R.id.paste;
8405
8406    /**
8407     * Called when a context menu option for the text view is selected.  Currently
8408     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
8409     * {@link android.R.id#copy} or {@link android.R.id#paste}.
8410     *
8411     * @return true if the context menu item action was performed.
8412     */
8413    public boolean onTextContextMenuItem(int id) {
8414        int min = 0;
8415        int max = mText.length();
8416
8417        if (isFocused()) {
8418            final int selStart = getSelectionStart();
8419            final int selEnd = getSelectionEnd();
8420
8421            min = Math.max(0, Math.min(selStart, selEnd));
8422            max = Math.max(0, Math.max(selStart, selEnd));
8423        }
8424
8425        switch (id) {
8426            case ID_SELECT_ALL:
8427                // This does not enter text selection mode. Text is highlighted, so that it can be
8428                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8429                selectAllText();
8430                return true;
8431
8432            case ID_PASTE:
8433                paste(min, max);
8434                return true;
8435
8436            case ID_CUT:
8437                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8438                deleteText_internal(min, max);
8439                stopSelectionActionMode();
8440                return true;
8441
8442            case ID_COPY:
8443                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8444                stopSelectionActionMode();
8445                return true;
8446        }
8447        return false;
8448    }
8449
8450    CharSequence getTransformedText(int start, int end) {
8451        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8452    }
8453
8454    @Override
8455    public boolean performLongClick() {
8456        boolean handled = false;
8457
8458        if (super.performLongClick()) {
8459            handled = true;
8460        }
8461
8462        if (mEditor != null) {
8463            handled |= mEditor.performLongClick(handled);
8464        }
8465
8466        if (handled) {
8467            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8468            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
8469        }
8470
8471        return handled;
8472    }
8473
8474    @Override
8475    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8476        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8477        if (mEditor != null) {
8478            mEditor.onScrollChanged();
8479        }
8480    }
8481
8482    /**
8483     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8484     * by the IME or by the spell checker as the user types. This is done by adding
8485     * {@link SuggestionSpan}s to the text.
8486     *
8487     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8488     * user asks for them on these parts of the text. This value depends on the inputType of this
8489     * TextView.
8490     *
8491     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8492     *
8493     * In addition, the type variation must be one of
8494     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8495     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8496     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8497     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8498     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8499     *
8500     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8501     *
8502     * @return true if the suggestions popup window is enabled, based on the inputType.
8503     */
8504    public boolean isSuggestionsEnabled() {
8505        if (mEditor == null) return false;
8506        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
8507            return false;
8508        }
8509        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8510
8511        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
8512        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8513                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8514                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8515                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8516                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8517    }
8518
8519    /**
8520     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8521     * selection is initiated in this View.
8522     *
8523     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8524     * Paste actions, depending on what this View supports.
8525     *
8526     * A custom implementation can add new entries in the default menu in its
8527     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8528     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
8529     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
8530     * or {@link android.R.id#paste} ids as parameters.
8531     *
8532     * Returning false from
8533     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8534     * the action mode from being started.
8535     *
8536     * Action click events should be handled by the custom implementation of
8537     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8538     *
8539     * Note that text selection mode is not started when a TextView receives focus and the
8540     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8541     * that case, to allow for quick replacement.
8542     */
8543    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8544        createEditorIfNeeded();
8545        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
8546    }
8547
8548    /**
8549     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8550     *
8551     * @return The current custom selection callback.
8552     */
8553    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8554        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
8555    }
8556
8557    /**
8558     * @hide
8559     */
8560    protected void stopSelectionActionMode() {
8561        mEditor.stopSelectionActionMode();
8562    }
8563
8564    boolean canCut() {
8565        if (hasPasswordTransformationMethod()) {
8566            return false;
8567        }
8568
8569        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
8570                mEditor.mKeyListener != null) {
8571            return true;
8572        }
8573
8574        return false;
8575    }
8576
8577    boolean canCopy() {
8578        if (hasPasswordTransformationMethod()) {
8579            return false;
8580        }
8581
8582        if (mText.length() > 0 && hasSelection() && mEditor != null) {
8583            return true;
8584        }
8585
8586        return false;
8587    }
8588
8589    boolean canPaste() {
8590        return (mText instanceof Editable &&
8591                mEditor != null && mEditor.mKeyListener != null &&
8592                getSelectionStart() >= 0 &&
8593                getSelectionEnd() >= 0 &&
8594                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8595                hasPrimaryClip());
8596    }
8597
8598    boolean selectAllText() {
8599        final int length = mText.length();
8600        Selection.setSelection((Spannable) mText, 0, length);
8601        return length > 0;
8602    }
8603
8604    /**
8605     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8606     * by [min, max] when replacing this region by paste.
8607     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8608     * make sure we do not add an extra one from the paste content.
8609     */
8610    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8611        if (paste.length() > 0) {
8612            if (min > 0) {
8613                final char charBefore = mTransformed.charAt(min - 1);
8614                final char charAfter = paste.charAt(0);
8615
8616                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8617                    // Two spaces at beginning of paste: remove one
8618                    final int originalLength = mText.length();
8619                    deleteText_internal(min - 1, min);
8620                    // Due to filters, there is no guarantee that exactly one character was
8621                    // removed: count instead.
8622                    final int delta = mText.length() - originalLength;
8623                    min += delta;
8624                    max += delta;
8625                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8626                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8627                    // No space at beginning of paste: add one
8628                    final int originalLength = mText.length();
8629                    replaceText_internal(min, min, " ");
8630                    // Taking possible filters into account as above.
8631                    final int delta = mText.length() - originalLength;
8632                    min += delta;
8633                    max += delta;
8634                }
8635            }
8636
8637            if (max < mText.length()) {
8638                final char charBefore = paste.charAt(paste.length() - 1);
8639                final char charAfter = mTransformed.charAt(max);
8640
8641                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8642                    // Two spaces at end of paste: remove one
8643                    deleteText_internal(max, max + 1);
8644                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8645                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8646                    // No space at end of paste: add one
8647                    replaceText_internal(max, max, " ");
8648                }
8649            }
8650        }
8651
8652        return TextUtils.packRangeInLong(min, max);
8653    }
8654
8655    /**
8656     * Paste clipboard content between min and max positions.
8657     */
8658    private void paste(int min, int max) {
8659        ClipboardManager clipboard =
8660            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8661        ClipData clip = clipboard.getPrimaryClip();
8662        if (clip != null) {
8663            boolean didFirst = false;
8664            for (int i=0; i<clip.getItemCount(); i++) {
8665                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8666                if (paste != null) {
8667                    if (!didFirst) {
8668                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8669                        min = TextUtils.unpackRangeStartFromLong(minMax);
8670                        max = TextUtils.unpackRangeEndFromLong(minMax);
8671                        Selection.setSelection((Spannable) mText, max);
8672                        ((Editable) mText).replace(min, max, paste);
8673                        didFirst = true;
8674                    } else {
8675                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8676                        ((Editable) mText).insert(getSelectionEnd(), paste);
8677                    }
8678                }
8679            }
8680            stopSelectionActionMode();
8681            LAST_CUT_OR_COPY_TIME = 0;
8682        }
8683    }
8684
8685    private void setPrimaryClip(ClipData clip) {
8686        ClipboardManager clipboard = (ClipboardManager) getContext().
8687                getSystemService(Context.CLIPBOARD_SERVICE);
8688        clipboard.setPrimaryClip(clip);
8689        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8690    }
8691
8692    /**
8693     * Get the character offset closest to the specified absolute position. A typical use case is to
8694     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8695     *
8696     * @param x The horizontal absolute position of a point on screen
8697     * @param y The vertical absolute position of a point on screen
8698     * @return the character offset for the character whose position is closest to the specified
8699     *  position. Returns -1 if there is no layout.
8700     */
8701    public int getOffsetForPosition(float x, float y) {
8702        if (getLayout() == null) return -1;
8703        final int line = getLineAtCoordinate(y);
8704        final int offset = getOffsetAtCoordinate(line, x);
8705        return offset;
8706    }
8707
8708    float convertToLocalHorizontalCoordinate(float x) {
8709        x -= getTotalPaddingLeft();
8710        // Clamp the position to inside of the view.
8711        x = Math.max(0.0f, x);
8712        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8713        x += getScrollX();
8714        return x;
8715    }
8716
8717    int getLineAtCoordinate(float y) {
8718        y -= getTotalPaddingTop();
8719        // Clamp the position to inside of the view.
8720        y = Math.max(0.0f, y);
8721        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8722        y += getScrollY();
8723        return getLayout().getLineForVertical((int) y);
8724    }
8725
8726    private int getOffsetAtCoordinate(int line, float x) {
8727        x = convertToLocalHorizontalCoordinate(x);
8728        return getLayout().getOffsetForHorizontal(line, x);
8729    }
8730
8731    @Override
8732    public boolean onDragEvent(DragEvent event) {
8733        switch (event.getAction()) {
8734            case DragEvent.ACTION_DRAG_STARTED:
8735                return mEditor != null && mEditor.hasInsertionController();
8736
8737            case DragEvent.ACTION_DRAG_ENTERED:
8738                TextView.this.requestFocus();
8739                return true;
8740
8741            case DragEvent.ACTION_DRAG_LOCATION:
8742                final int offset = getOffsetForPosition(event.getX(), event.getY());
8743                Selection.setSelection((Spannable)mText, offset);
8744                return true;
8745
8746            case DragEvent.ACTION_DROP:
8747                if (mEditor != null) mEditor.onDrop(event);
8748                return true;
8749
8750            case DragEvent.ACTION_DRAG_ENDED:
8751            case DragEvent.ACTION_DRAG_EXITED:
8752            default:
8753                return true;
8754        }
8755    }
8756
8757    boolean isInBatchEditMode() {
8758        if (mEditor == null) return false;
8759        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8760        if (ims != null) {
8761            return ims.mBatchEditNesting > 0;
8762        }
8763        return mEditor.mInBatchEditControllers;
8764    }
8765
8766    @Override
8767    public void onRtlPropertiesChanged(int layoutDirection) {
8768        super.onRtlPropertiesChanged(layoutDirection);
8769
8770        mTextDir = getTextDirectionHeuristic();
8771
8772        if (mLayout != null) {
8773            checkForRelayout();
8774        }
8775    }
8776
8777    TextDirectionHeuristic getTextDirectionHeuristic() {
8778        if (hasPasswordTransformationMethod()) {
8779            // passwords fields should be LTR
8780            return TextDirectionHeuristics.LTR;
8781        }
8782
8783        // Always need to resolve layout direction first
8784        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
8785
8786        // Now, we can select the heuristic
8787        switch (getTextDirection()) {
8788            default:
8789            case TEXT_DIRECTION_FIRST_STRONG:
8790                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8791                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8792            case TEXT_DIRECTION_ANY_RTL:
8793                return TextDirectionHeuristics.ANYRTL_LTR;
8794            case TEXT_DIRECTION_LTR:
8795                return TextDirectionHeuristics.LTR;
8796            case TEXT_DIRECTION_RTL:
8797                return TextDirectionHeuristics.RTL;
8798            case TEXT_DIRECTION_LOCALE:
8799                return TextDirectionHeuristics.LOCALE;
8800        }
8801    }
8802
8803    /**
8804     * @hide
8805     */
8806    @Override
8807    public void onResolveDrawables(int layoutDirection) {
8808        // No need to resolve twice
8809        if (mLastLayoutDirection == layoutDirection) {
8810            return;
8811        }
8812        mLastLayoutDirection = layoutDirection;
8813
8814        // Resolve drawables
8815        if (mDrawables != null) {
8816            mDrawables.resolveWithLayoutDirection(layoutDirection);
8817        }
8818    }
8819
8820    /**
8821     * @hide
8822     */
8823    protected void resetResolvedDrawables() {
8824        super.resetResolvedDrawables();
8825        mLastLayoutDirection = -1;
8826    }
8827
8828    /**
8829     * @hide
8830     */
8831    protected void viewClicked(InputMethodManager imm) {
8832        if (imm != null) {
8833            imm.viewClicked(this);
8834        }
8835    }
8836
8837    /**
8838     * Deletes the range of text [start, end[.
8839     * @hide
8840     */
8841    protected void deleteText_internal(int start, int end) {
8842        ((Editable) mText).delete(start, end);
8843    }
8844
8845    /**
8846     * Replaces the range of text [start, end[ by replacement text
8847     * @hide
8848     */
8849    protected void replaceText_internal(int start, int end, CharSequence text) {
8850        ((Editable) mText).replace(start, end, text);
8851    }
8852
8853    /**
8854     * Sets a span on the specified range of text
8855     * @hide
8856     */
8857    protected void setSpan_internal(Object span, int start, int end, int flags) {
8858        ((Editable) mText).setSpan(span, start, end, flags);
8859    }
8860
8861    /**
8862     * Moves the cursor to the specified offset position in text
8863     * @hide
8864     */
8865    protected void setCursorPosition_internal(int start, int end) {
8866        Selection.setSelection(((Editable) mText), start, end);
8867    }
8868
8869    /**
8870     * An Editor should be created as soon as any of the editable-specific fields (grouped
8871     * inside the Editor object) is assigned to a non-default value.
8872     * This method will create the Editor if needed.
8873     *
8874     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8875     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8876     * Editor for backward compatibility, as soon as one of these fields is assigned.
8877     *
8878     * Also note that for performance reasons, the mEditor is created when needed, but not
8879     * reset when no more edit-specific fields are needed.
8880     */
8881    private void createEditorIfNeeded() {
8882        if (mEditor == null) {
8883            mEditor = new Editor(this);
8884        }
8885    }
8886
8887    /**
8888     * @hide
8889     */
8890    @Override
8891    public CharSequence getIterableTextForAccessibility() {
8892        if (!(mText instanceof Spannable)) {
8893            setText(mText, BufferType.SPANNABLE);
8894        }
8895        return mText;
8896    }
8897
8898    /**
8899     * @hide
8900     */
8901    @Override
8902    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8903        switch (granularity) {
8904            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8905                Spannable text = (Spannable) getIterableTextForAccessibility();
8906                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8907                    AccessibilityIterators.LineTextSegmentIterator iterator =
8908                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8909                    iterator.initialize(text, getLayout());
8910                    return iterator;
8911                }
8912            } break;
8913            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8914                Spannable text = (Spannable) getIterableTextForAccessibility();
8915                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8916                    AccessibilityIterators.PageTextSegmentIterator iterator =
8917                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8918                    iterator.initialize(this);
8919                    return iterator;
8920                }
8921            } break;
8922        }
8923        return super.getIteratorForGranularity(granularity);
8924    }
8925
8926    /**
8927     * @hide
8928     */
8929    @Override
8930    public int getAccessibilitySelectionStart() {
8931        return getSelectionStart();
8932    }
8933
8934    /**
8935     * @hide
8936     */
8937    public boolean isAccessibilitySelectionExtendable() {
8938        return true;
8939    }
8940
8941    /**
8942     * @hide
8943     */
8944    @Override
8945    public int getAccessibilitySelectionEnd() {
8946        return getSelectionEnd();
8947    }
8948
8949    /**
8950     * @hide
8951     */
8952    @Override
8953    public void setAccessibilitySelection(int start, int end) {
8954        if (getAccessibilitySelectionStart() == start
8955                && getAccessibilitySelectionEnd() == end) {
8956            return;
8957        }
8958        // Hide all selection controllers used for adjusting selection
8959        // since we are doing so explicitlty by other means and these
8960        // controllers interact with how selection behaves.
8961        if (mEditor != null) {
8962            mEditor.hideControllers();
8963        }
8964        CharSequence text = getIterableTextForAccessibility();
8965        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
8966            Selection.setSelection((Spannable) text, start, end);
8967        } else {
8968            Selection.removeSelection((Spannable) text);
8969        }
8970    }
8971
8972    /**
8973     * User interface state that is stored by TextView for implementing
8974     * {@link View#onSaveInstanceState}.
8975     */
8976    public static class SavedState extends BaseSavedState {
8977        int selStart;
8978        int selEnd;
8979        CharSequence text;
8980        boolean frozenWithFocus;
8981        CharSequence error;
8982
8983        SavedState(Parcelable superState) {
8984            super(superState);
8985        }
8986
8987        @Override
8988        public void writeToParcel(Parcel out, int flags) {
8989            super.writeToParcel(out, flags);
8990            out.writeInt(selStart);
8991            out.writeInt(selEnd);
8992            out.writeInt(frozenWithFocus ? 1 : 0);
8993            TextUtils.writeToParcel(text, out, flags);
8994
8995            if (error == null) {
8996                out.writeInt(0);
8997            } else {
8998                out.writeInt(1);
8999                TextUtils.writeToParcel(error, out, flags);
9000            }
9001        }
9002
9003        @Override
9004        public String toString() {
9005            String str = "TextView.SavedState{"
9006                    + Integer.toHexString(System.identityHashCode(this))
9007                    + " start=" + selStart + " end=" + selEnd;
9008            if (text != null) {
9009                str += " text=" + text;
9010            }
9011            return str + "}";
9012        }
9013
9014        @SuppressWarnings("hiding")
9015        public static final Parcelable.Creator<SavedState> CREATOR
9016                = new Parcelable.Creator<SavedState>() {
9017            public SavedState createFromParcel(Parcel in) {
9018                return new SavedState(in);
9019            }
9020
9021            public SavedState[] newArray(int size) {
9022                return new SavedState[size];
9023            }
9024        };
9025
9026        private SavedState(Parcel in) {
9027            super(in);
9028            selStart = in.readInt();
9029            selEnd = in.readInt();
9030            frozenWithFocus = (in.readInt() != 0);
9031            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9032
9033            if (in.readInt() != 0) {
9034                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9035            }
9036        }
9037    }
9038
9039    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
9040        private char[] mChars;
9041        private int mStart, mLength;
9042
9043        public CharWrapper(char[] chars, int start, int len) {
9044            mChars = chars;
9045            mStart = start;
9046            mLength = len;
9047        }
9048
9049        /* package */ void set(char[] chars, int start, int len) {
9050            mChars = chars;
9051            mStart = start;
9052            mLength = len;
9053        }
9054
9055        public int length() {
9056            return mLength;
9057        }
9058
9059        public char charAt(int off) {
9060            return mChars[off + mStart];
9061        }
9062
9063        @Override
9064        public String toString() {
9065            return new String(mChars, mStart, mLength);
9066        }
9067
9068        public CharSequence subSequence(int start, int end) {
9069            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9070                throw new IndexOutOfBoundsException(start + ", " + end);
9071            }
9072
9073            return new String(mChars, start + mStart, end - start);
9074        }
9075
9076        public void getChars(int start, int end, char[] buf, int off) {
9077            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9078                throw new IndexOutOfBoundsException(start + ", " + end);
9079            }
9080
9081            System.arraycopy(mChars, start + mStart, buf, off, end - start);
9082        }
9083
9084        public void drawText(Canvas c, int start, int end,
9085                             float x, float y, Paint p) {
9086            c.drawText(mChars, start + mStart, end - start, x, y, p);
9087        }
9088
9089        public void drawTextRun(Canvas c, int start, int end,
9090                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
9091            int count = end - start;
9092            int contextCount = contextEnd - contextStart;
9093            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
9094                    contextCount, x, y, isRtl, p);
9095        }
9096
9097        public float measureText(int start, int end, Paint p) {
9098            return p.measureText(mChars, start + mStart, end - start);
9099        }
9100
9101        public int getTextWidths(int start, int end, float[] widths, Paint p) {
9102            return p.getTextWidths(mChars, start + mStart, end - start, widths);
9103        }
9104
9105        public float getTextRunAdvances(int start, int end, int contextStart,
9106                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
9107                Paint p) {
9108            int count = end - start;
9109            int contextCount = contextEnd - contextStart;
9110            return p.getTextRunAdvances(mChars, start + mStart, count,
9111                    contextStart + mStart, contextCount, isRtl, advances,
9112                    advancesIndex);
9113        }
9114
9115        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
9116                int offset, int cursorOpt, Paint p) {
9117            int contextCount = contextEnd - contextStart;
9118            return p.getTextRunCursor(mChars, contextStart + mStart,
9119                    contextCount, dir, offset + mStart, cursorOpt);
9120        }
9121    }
9122
9123    private static final class Marquee {
9124        // TODO: Add an option to configure this
9125        private static final float MARQUEE_DELTA_MAX = 0.07f;
9126        private static final int MARQUEE_DELAY = 1200;
9127        private static final int MARQUEE_RESTART_DELAY = 1200;
9128        private static final int MARQUEE_DP_PER_SECOND = 30;
9129
9130        private static final byte MARQUEE_STOPPED = 0x0;
9131        private static final byte MARQUEE_STARTING = 0x1;
9132        private static final byte MARQUEE_RUNNING = 0x2;
9133
9134        private final WeakReference<TextView> mView;
9135        private final Choreographer mChoreographer;
9136
9137        private byte mStatus = MARQUEE_STOPPED;
9138        private final float mPixelsPerSecond;
9139        private float mMaxScroll;
9140        private float mMaxFadeScroll;
9141        private float mGhostStart;
9142        private float mGhostOffset;
9143        private float mFadeStop;
9144        private int mRepeatLimit;
9145
9146        private float mScroll;
9147        private long mLastAnimationMs;
9148
9149        Marquee(TextView v) {
9150            final float density = v.getContext().getResources().getDisplayMetrics().density;
9151            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
9152            mView = new WeakReference<TextView>(v);
9153            mChoreographer = Choreographer.getInstance();
9154        }
9155
9156        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
9157            @Override
9158            public void doFrame(long frameTimeNanos) {
9159                tick();
9160            }
9161        };
9162
9163        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
9164            @Override
9165            public void doFrame(long frameTimeNanos) {
9166                mStatus = MARQUEE_RUNNING;
9167                mLastAnimationMs = mChoreographer.getFrameTime();
9168                tick();
9169            }
9170        };
9171
9172        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
9173            @Override
9174            public void doFrame(long frameTimeNanos) {
9175                if (mStatus == MARQUEE_RUNNING) {
9176                    if (mRepeatLimit >= 0) {
9177                        mRepeatLimit--;
9178                    }
9179                    start(mRepeatLimit);
9180                }
9181            }
9182        };
9183
9184        void tick() {
9185            if (mStatus != MARQUEE_RUNNING) {
9186                return;
9187            }
9188
9189            mChoreographer.removeFrameCallback(mTickCallback);
9190
9191            final TextView textView = mView.get();
9192            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9193                long currentMs = mChoreographer.getFrameTime();
9194                long deltaMs = currentMs - mLastAnimationMs;
9195                mLastAnimationMs = currentMs;
9196                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
9197                mScroll += deltaPx;
9198                if (mScroll > mMaxScroll) {
9199                    mScroll = mMaxScroll;
9200                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
9201                } else {
9202                    mChoreographer.postFrameCallback(mTickCallback);
9203                }
9204                textView.invalidate();
9205            }
9206        }
9207
9208        void stop() {
9209            mStatus = MARQUEE_STOPPED;
9210            mChoreographer.removeFrameCallback(mStartCallback);
9211            mChoreographer.removeFrameCallback(mRestartCallback);
9212            mChoreographer.removeFrameCallback(mTickCallback);
9213            resetScroll();
9214        }
9215
9216        private void resetScroll() {
9217            mScroll = 0.0f;
9218            final TextView textView = mView.get();
9219            if (textView != null) textView.invalidate();
9220        }
9221
9222        void start(int repeatLimit) {
9223            if (repeatLimit == 0) {
9224                stop();
9225                return;
9226            }
9227            mRepeatLimit = repeatLimit;
9228            final TextView textView = mView.get();
9229            if (textView != null && textView.mLayout != null) {
9230                mStatus = MARQUEE_STARTING;
9231                mScroll = 0.0f;
9232                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9233                        textView.getCompoundPaddingRight();
9234                final float lineWidth = textView.mLayout.getLineWidth(0);
9235                final float gap = textWidth / 3.0f;
9236                mGhostStart = lineWidth - textWidth + gap;
9237                mMaxScroll = mGhostStart + textWidth;
9238                mGhostOffset = lineWidth + gap;
9239                mFadeStop = lineWidth + textWidth / 6.0f;
9240                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9241
9242                textView.invalidate();
9243                mChoreographer.postFrameCallback(mStartCallback);
9244            }
9245        }
9246
9247        float getGhostOffset() {
9248            return mGhostOffset;
9249        }
9250
9251        float getScroll() {
9252            return mScroll;
9253        }
9254
9255        float getMaxFadeScroll() {
9256            return mMaxFadeScroll;
9257        }
9258
9259        boolean shouldDrawLeftFade() {
9260            return mScroll <= mFadeStop;
9261        }
9262
9263        boolean shouldDrawGhost() {
9264            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9265        }
9266
9267        boolean isRunning() {
9268            return mStatus == MARQUEE_RUNNING;
9269        }
9270
9271        boolean isStopped() {
9272            return mStatus == MARQUEE_STOPPED;
9273        }
9274    }
9275
9276    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9277
9278        private CharSequence mBeforeText;
9279
9280        public void beforeTextChanged(CharSequence buffer, int start,
9281                                      int before, int after) {
9282            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9283                    + " before=" + before + " after=" + after + ": " + buffer);
9284
9285            if (AccessibilityManager.getInstance(mContext).isEnabled()
9286                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
9287                            || shouldSpeakPasswordsForAccessibility())) {
9288                mBeforeText = buffer.toString();
9289            }
9290
9291            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9292        }
9293
9294        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
9295            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9296                    + " before=" + before + " after=" + after + ": " + buffer);
9297            TextView.this.handleTextChanged(buffer, start, before, after);
9298
9299            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9300                    (isFocused() || isSelected() && isShown())) {
9301                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9302                mBeforeText = null;
9303            }
9304        }
9305
9306        public void afterTextChanged(Editable buffer) {
9307            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9308            TextView.this.sendAfterTextChanged(buffer);
9309
9310            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9311                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9312            }
9313        }
9314
9315        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
9316            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9317                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9318            TextView.this.spanChange(buf, what, s, st, e, en);
9319        }
9320
9321        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9322            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9323                    + " what=" + what + ": " + buf);
9324            TextView.this.spanChange(buf, what, -1, s, -1, e);
9325        }
9326
9327        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9328            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9329                    + " what=" + what + ": " + buf);
9330            TextView.this.spanChange(buf, what, s, -1, e, -1);
9331        }
9332    }
9333}
9334