TextView.java revision cd305ae3ceef14dd5de807d75aa6167dfcd69c86 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.R;
20import android.annotation.NonNull;
21import android.annotation.Nullable;
22import android.content.ClipData;
23import android.content.ClipboardManager;
24import android.content.Context;
25import android.content.UndoManager;
26import android.content.res.ColorStateList;
27import android.content.res.CompatibilityInfo;
28import android.content.res.Resources;
29import android.content.res.TypedArray;
30import android.content.res.XmlResourceParser;
31import android.graphics.Canvas;
32import android.graphics.Insets;
33import android.graphics.Paint;
34import android.graphics.Path;
35import android.graphics.Rect;
36import android.graphics.RectF;
37import android.graphics.Typeface;
38import android.graphics.drawable.Drawable;
39import android.inputmethodservice.ExtractEditText;
40import android.os.AsyncTask;
41import android.os.Bundle;
42import android.os.Parcel;
43import android.os.Parcelable;
44import android.os.SystemClock;
45import android.os.UserHandle;
46import android.provider.Settings;
47import android.text.BoringLayout;
48import android.text.DynamicLayout;
49import android.text.Editable;
50import android.text.GetChars;
51import android.text.GraphicsOperations;
52import android.text.InputFilter;
53import android.text.InputType;
54import android.text.Layout;
55import android.text.ParcelableSpan;
56import android.text.Selection;
57import android.text.SpanWatcher;
58import android.text.Spannable;
59import android.text.SpannableString;
60import android.text.SpannableStringBuilder;
61import android.text.Spanned;
62import android.text.SpannedString;
63import android.text.StaticLayout;
64import android.text.TextDirectionHeuristic;
65import android.text.TextDirectionHeuristics;
66import android.text.TextPaint;
67import android.text.TextUtils;
68import android.text.TextUtils.TruncateAt;
69import android.text.TextWatcher;
70import android.text.method.AllCapsTransformationMethod;
71import android.text.method.ArrowKeyMovementMethod;
72import android.text.method.DateKeyListener;
73import android.text.method.DateTimeKeyListener;
74import android.text.method.DialerKeyListener;
75import android.text.method.DigitsKeyListener;
76import android.text.method.KeyListener;
77import android.text.method.LinkMovementMethod;
78import android.text.method.MetaKeyKeyListener;
79import android.text.method.MovementMethod;
80import android.text.method.PasswordTransformationMethod;
81import android.text.method.SingleLineTransformationMethod;
82import android.text.method.TextKeyListener;
83import android.text.method.TimeKeyListener;
84import android.text.method.TransformationMethod;
85import android.text.method.TransformationMethod2;
86import android.text.method.WordIterator;
87import android.text.style.CharacterStyle;
88import android.text.style.ClickableSpan;
89import android.text.style.ParagraphStyle;
90import android.text.style.SpellCheckSpan;
91import android.text.style.SuggestionSpan;
92import android.text.style.URLSpan;
93import android.text.style.UpdateAppearance;
94import android.text.util.Linkify;
95import android.util.AttributeSet;
96import android.util.FloatMath;
97import android.util.Log;
98import android.util.TypedValue;
99import android.view.AccessibilityIterators.TextSegmentIterator;
100import android.view.ActionMode;
101import android.view.Choreographer;
102import android.view.DragEvent;
103import android.view.Gravity;
104import android.view.HapticFeedbackConstants;
105import android.view.KeyCharacterMap;
106import android.view.KeyEvent;
107import android.view.Menu;
108import android.view.MenuItem;
109import android.view.MotionEvent;
110import android.view.View;
111import android.view.ViewConfiguration;
112import android.view.ViewDebug;
113import android.view.ViewGroup.LayoutParams;
114import android.view.ViewRootImpl;
115import android.view.ViewTreeObserver;
116import android.view.accessibility.AccessibilityEvent;
117import android.view.accessibility.AccessibilityManager;
118import android.view.accessibility.AccessibilityNodeInfo;
119import android.view.animation.AnimationUtils;
120import android.view.inputmethod.BaseInputConnection;
121import android.view.inputmethod.CompletionInfo;
122import android.view.inputmethod.CorrectionInfo;
123import android.view.inputmethod.EditorInfo;
124import android.view.inputmethod.ExtractedText;
125import android.view.inputmethod.ExtractedTextRequest;
126import android.view.inputmethod.InputConnection;
127import android.view.inputmethod.InputMethodManager;
128import android.view.textservice.SpellCheckerSubtype;
129import android.view.textservice.TextServicesManager;
130import android.widget.RemoteViews.RemoteView;
131
132import com.android.internal.util.FastMath;
133import com.android.internal.widget.EditableInputConnection;
134
135import org.xmlpull.v1.XmlPullParserException;
136
137import java.io.IOException;
138import java.lang.ref.WeakReference;
139import java.util.ArrayList;
140import java.util.Locale;
141
142import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
143
144/**
145 * Displays text to the user and optionally allows them to edit it.  A TextView
146 * is a complete text editor, however the basic class is configured to not
147 * allow editing; see {@link EditText} for a subclass that configures the text
148 * view for editing.
149 *
150 * <p>
151 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
152 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
153 * android:textIsSelectable} to "true" or call
154 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
155 * allows users to make selection gestures in the TextView, which in turn triggers the system's
156 * built-in copy/paste controls.
157 * <p>
158 * <b>XML attributes</b>
159 * <p>
160 * See {@link android.R.styleable#TextView TextView Attributes},
161 * {@link android.R.styleable#View View Attributes}
162 *
163 * @attr ref android.R.styleable#TextView_text
164 * @attr ref android.R.styleable#TextView_bufferType
165 * @attr ref android.R.styleable#TextView_hint
166 * @attr ref android.R.styleable#TextView_textColor
167 * @attr ref android.R.styleable#TextView_textColorHighlight
168 * @attr ref android.R.styleable#TextView_textColorHint
169 * @attr ref android.R.styleable#TextView_textAppearance
170 * @attr ref android.R.styleable#TextView_textColorLink
171 * @attr ref android.R.styleable#TextView_textSize
172 * @attr ref android.R.styleable#TextView_textScaleX
173 * @attr ref android.R.styleable#TextView_fontFamily
174 * @attr ref android.R.styleable#TextView_typeface
175 * @attr ref android.R.styleable#TextView_textStyle
176 * @attr ref android.R.styleable#TextView_cursorVisible
177 * @attr ref android.R.styleable#TextView_maxLines
178 * @attr ref android.R.styleable#TextView_maxHeight
179 * @attr ref android.R.styleable#TextView_lines
180 * @attr ref android.R.styleable#TextView_height
181 * @attr ref android.R.styleable#TextView_minLines
182 * @attr ref android.R.styleable#TextView_minHeight
183 * @attr ref android.R.styleable#TextView_maxEms
184 * @attr ref android.R.styleable#TextView_maxWidth
185 * @attr ref android.R.styleable#TextView_ems
186 * @attr ref android.R.styleable#TextView_width
187 * @attr ref android.R.styleable#TextView_minEms
188 * @attr ref android.R.styleable#TextView_minWidth
189 * @attr ref android.R.styleable#TextView_gravity
190 * @attr ref android.R.styleable#TextView_scrollHorizontally
191 * @attr ref android.R.styleable#TextView_password
192 * @attr ref android.R.styleable#TextView_singleLine
193 * @attr ref android.R.styleable#TextView_selectAllOnFocus
194 * @attr ref android.R.styleable#TextView_includeFontPadding
195 * @attr ref android.R.styleable#TextView_maxLength
196 * @attr ref android.R.styleable#TextView_shadowColor
197 * @attr ref android.R.styleable#TextView_shadowDx
198 * @attr ref android.R.styleable#TextView_shadowDy
199 * @attr ref android.R.styleable#TextView_shadowRadius
200 * @attr ref android.R.styleable#TextView_autoLink
201 * @attr ref android.R.styleable#TextView_linksClickable
202 * @attr ref android.R.styleable#TextView_numeric
203 * @attr ref android.R.styleable#TextView_digits
204 * @attr ref android.R.styleable#TextView_phoneNumber
205 * @attr ref android.R.styleable#TextView_inputMethod
206 * @attr ref android.R.styleable#TextView_capitalize
207 * @attr ref android.R.styleable#TextView_autoText
208 * @attr ref android.R.styleable#TextView_editable
209 * @attr ref android.R.styleable#TextView_freezesText
210 * @attr ref android.R.styleable#TextView_ellipsize
211 * @attr ref android.R.styleable#TextView_drawableTop
212 * @attr ref android.R.styleable#TextView_drawableBottom
213 * @attr ref android.R.styleable#TextView_drawableRight
214 * @attr ref android.R.styleable#TextView_drawableLeft
215 * @attr ref android.R.styleable#TextView_drawableStart
216 * @attr ref android.R.styleable#TextView_drawableEnd
217 * @attr ref android.R.styleable#TextView_drawablePadding
218 * @attr ref android.R.styleable#TextView_lineSpacingExtra
219 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
220 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
221 * @attr ref android.R.styleable#TextView_inputType
222 * @attr ref android.R.styleable#TextView_imeOptions
223 * @attr ref android.R.styleable#TextView_privateImeOptions
224 * @attr ref android.R.styleable#TextView_imeActionLabel
225 * @attr ref android.R.styleable#TextView_imeActionId
226 * @attr ref android.R.styleable#TextView_editorExtras
227 * @attr ref android.R.styleable#TextView_elegantTextHeight
228 * @attr ref android.R.styleable#TextView_letterSpacing
229 * @attr ref android.R.styleable#TextView_fontFeatureSettings
230 */
231@RemoteView
232public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
233    static final String LOG_TAG = "TextView";
234    static final boolean DEBUG_EXTRACT = false;
235
236    // Enum for the "typeface" XML parameter.
237    // TODO: How can we get this from the XML instead of hardcoding it here?
238    private static final int SANS = 1;
239    private static final int SERIF = 2;
240    private static final int MONOSPACE = 3;
241
242    // Bitfield for the "numeric" XML parameter.
243    // TODO: How can we get this from the XML instead of hardcoding it here?
244    private static final int SIGNED = 2;
245    private static final int DECIMAL = 4;
246
247    /**
248     * Draw marquee text with fading edges as usual
249     */
250    private static final int MARQUEE_FADE_NORMAL = 0;
251
252    /**
253     * Draw marquee text as ellipsize end while inactive instead of with the fade.
254     * (Useful for devices where the fade can be expensive if overdone)
255     */
256    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
257
258    /**
259     * Draw marquee text with fading edges because it is currently active/animating.
260     */
261    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
262
263    private static final int LINES = 1;
264    private static final int EMS = LINES;
265    private static final int PIXELS = 2;
266
267    private static final RectF TEMP_RECTF = new RectF();
268
269    // XXX should be much larger
270    private static final int VERY_WIDE = 1024*1024;
271    private static final int ANIMATED_SCROLL_GAP = 250;
272
273    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
274    private static final Spanned EMPTY_SPANNED = new SpannedString("");
275
276    private static final int CHANGE_WATCHER_PRIORITY = 100;
277
278    // New state used to change background based on whether this TextView is multiline.
279    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
280
281    // System wide time for last cut or copy action.
282    static long LAST_CUT_OR_COPY_TIME;
283
284    private ColorStateList mTextColor;
285    private ColorStateList mHintTextColor;
286    private ColorStateList mLinkTextColor;
287    @ViewDebug.ExportedProperty(category = "text")
288    private int mCurTextColor;
289    private int mCurHintTextColor;
290    private boolean mFreezesText;
291    private boolean mDispatchTemporaryDetach;
292
293    /** Whether this view is temporarily detached from the parent view. */
294    boolean mTemporaryDetach;
295
296    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
297    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
298
299    private float mShadowRadius, mShadowDx, mShadowDy;
300    private int mShadowColor;
301
302
303    private boolean mPreDrawRegistered;
304    private boolean mPreDrawListenerDetached;
305
306    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
307    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
308    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
309    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
310    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
311    private boolean mPreventDefaultMovement;
312
313    private TextUtils.TruncateAt mEllipsize;
314
315    static class Drawables {
316        final static int DRAWABLE_NONE = -1;
317        final static int DRAWABLE_RIGHT = 0;
318        final static int DRAWABLE_LEFT = 1;
319
320        final Rect mCompoundRect = new Rect();
321
322        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
323                mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
324
325        Drawable mDrawableLeftInitial, mDrawableRightInitial;
326        boolean mIsRtlCompatibilityMode;
327        boolean mOverride;
328
329        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
330                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
331
332        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
333                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
334
335        int mDrawablePadding;
336
337        int mDrawableSaved = DRAWABLE_NONE;
338
339        public Drawables(Context context) {
340            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
341            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
342                !context.getApplicationInfo().hasRtlSupport());
343            mOverride = false;
344        }
345
346        public void resolveWithLayoutDirection(int layoutDirection) {
347            // First reset "left" and "right" drawables to their initial values
348            mDrawableLeft = mDrawableLeftInitial;
349            mDrawableRight = mDrawableRightInitial;
350
351            if (mIsRtlCompatibilityMode) {
352                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
353                if (mDrawableStart != null && mDrawableLeft == null) {
354                    mDrawableLeft = mDrawableStart;
355                    mDrawableSizeLeft = mDrawableSizeStart;
356                    mDrawableHeightLeft = mDrawableHeightStart;
357                }
358                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
359                if (mDrawableEnd != null && mDrawableRight == null) {
360                    mDrawableRight = mDrawableEnd;
361                    mDrawableSizeRight = mDrawableSizeEnd;
362                    mDrawableHeightRight = mDrawableHeightEnd;
363                }
364            } else {
365                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
366                // drawable if and only if they have been defined
367                switch(layoutDirection) {
368                    case LAYOUT_DIRECTION_RTL:
369                        if (mOverride) {
370                            mDrawableRight = mDrawableStart;
371                            mDrawableSizeRight = mDrawableSizeStart;
372                            mDrawableHeightRight = mDrawableHeightStart;
373
374                            mDrawableLeft = mDrawableEnd;
375                            mDrawableSizeLeft = mDrawableSizeEnd;
376                            mDrawableHeightLeft = mDrawableHeightEnd;
377                        }
378                        break;
379
380                    case LAYOUT_DIRECTION_LTR:
381                    default:
382                        if (mOverride) {
383                            mDrawableLeft = mDrawableStart;
384                            mDrawableSizeLeft = mDrawableSizeStart;
385                            mDrawableHeightLeft = mDrawableHeightStart;
386
387                            mDrawableRight = mDrawableEnd;
388                            mDrawableSizeRight = mDrawableSizeEnd;
389                            mDrawableHeightRight = mDrawableHeightEnd;
390                        }
391                        break;
392                }
393            }
394            applyErrorDrawableIfNeeded(layoutDirection);
395            updateDrawablesLayoutDirection(layoutDirection);
396        }
397
398        private void updateDrawablesLayoutDirection(int layoutDirection) {
399            if (mDrawableLeft != null) {
400                mDrawableLeft.setLayoutDirection(layoutDirection);
401            }
402            if (mDrawableRight != null) {
403                mDrawableRight.setLayoutDirection(layoutDirection);
404            }
405            if (mDrawableTop != null) {
406                mDrawableTop.setLayoutDirection(layoutDirection);
407            }
408            if (mDrawableBottom != null) {
409                mDrawableBottom.setLayoutDirection(layoutDirection);
410            }
411        }
412
413        public void setErrorDrawable(Drawable dr, TextView tv) {
414            if (mDrawableError != dr && mDrawableError != null) {
415                mDrawableError.setCallback(null);
416            }
417            mDrawableError = dr;
418
419            final Rect compoundRect = mCompoundRect;
420            int[] state = tv.getDrawableState();
421
422            if (mDrawableError != null) {
423                mDrawableError.setState(state);
424                mDrawableError.copyBounds(compoundRect);
425                mDrawableError.setCallback(tv);
426                mDrawableSizeError = compoundRect.width();
427                mDrawableHeightError = compoundRect.height();
428            } else {
429                mDrawableSizeError = mDrawableHeightError = 0;
430            }
431        }
432
433        private void applyErrorDrawableIfNeeded(int layoutDirection) {
434            // first restore the initial state if needed
435            switch (mDrawableSaved) {
436                case DRAWABLE_LEFT:
437                    mDrawableLeft = mDrawableTemp;
438                    mDrawableSizeLeft = mDrawableSizeTemp;
439                    mDrawableHeightLeft = mDrawableHeightTemp;
440                    break;
441                case DRAWABLE_RIGHT:
442                    mDrawableRight = mDrawableTemp;
443                    mDrawableSizeRight = mDrawableSizeTemp;
444                    mDrawableHeightRight = mDrawableHeightTemp;
445                    break;
446                case DRAWABLE_NONE:
447                default:
448            }
449            // then, if needed, assign the Error drawable to the correct location
450            if (mDrawableError != null) {
451                switch(layoutDirection) {
452                    case LAYOUT_DIRECTION_RTL:
453                        mDrawableSaved = DRAWABLE_LEFT;
454
455                        mDrawableTemp = mDrawableLeft;
456                        mDrawableSizeTemp = mDrawableSizeLeft;
457                        mDrawableHeightTemp = mDrawableHeightLeft;
458
459                        mDrawableLeft = mDrawableError;
460                        mDrawableSizeLeft = mDrawableSizeError;
461                        mDrawableHeightLeft = mDrawableHeightError;
462                        break;
463                    case LAYOUT_DIRECTION_LTR:
464                    default:
465                        mDrawableSaved = DRAWABLE_RIGHT;
466
467                        mDrawableTemp = mDrawableRight;
468                        mDrawableSizeTemp = mDrawableSizeRight;
469                        mDrawableHeightTemp = mDrawableHeightRight;
470
471                        mDrawableRight = mDrawableError;
472                        mDrawableSizeRight = mDrawableSizeError;
473                        mDrawableHeightRight = mDrawableHeightError;
474                        break;
475                }
476            }
477        }
478    }
479
480    Drawables mDrawables;
481
482    private CharWrapper mCharWrapper;
483
484    private Marquee mMarquee;
485    private boolean mRestartMarquee;
486
487    private int mMarqueeRepeatLimit = 3;
488
489    private int mLastLayoutDirection = -1;
490
491    /**
492     * On some devices the fading edges add a performance penalty if used
493     * extensively in the same layout. This mode indicates how the marquee
494     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
495     */
496    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
497
498    /**
499     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
500     * the layout that should be used when the mode switches.
501     */
502    private Layout mSavedMarqueeModeLayout;
503
504    @ViewDebug.ExportedProperty(category = "text")
505    private CharSequence mText;
506    private CharSequence mTransformed;
507    private BufferType mBufferType = BufferType.NORMAL;
508
509    private CharSequence mHint;
510    private Layout mHintLayout;
511
512    private MovementMethod mMovement;
513
514    private TransformationMethod mTransformation;
515    private boolean mAllowTransformationLengthChange;
516    private ChangeWatcher mChangeWatcher;
517
518    private ArrayList<TextWatcher> mListeners;
519
520    // display attributes
521    private final TextPaint mTextPaint;
522    private boolean mUserSetTextScaleX;
523    private Layout mLayout;
524
525    private int mGravity = Gravity.TOP | Gravity.START;
526    private boolean mHorizontallyScrolling;
527
528    private int mAutoLinkMask;
529    private boolean mLinksClickable = true;
530
531    private float mSpacingMult = 1.0f;
532    private float mSpacingAdd = 0.0f;
533
534    private int mMaximum = Integer.MAX_VALUE;
535    private int mMaxMode = LINES;
536    private int mMinimum = 0;
537    private int mMinMode = LINES;
538
539    private int mOldMaximum = mMaximum;
540    private int mOldMaxMode = mMaxMode;
541
542    private int mMaxWidth = Integer.MAX_VALUE;
543    private int mMaxWidthMode = PIXELS;
544    private int mMinWidth = 0;
545    private int mMinWidthMode = PIXELS;
546
547    private boolean mSingleLine;
548    private int mDesiredHeightAtMeasure = -1;
549    private boolean mIncludePad = true;
550    private int mDeferScroll = -1;
551
552    // tmp primitives, so we don't alloc them on each draw
553    private Rect mTempRect;
554    private long mLastScroll;
555    private Scroller mScroller;
556
557    private BoringLayout.Metrics mBoring, mHintBoring;
558    private BoringLayout mSavedLayout, mSavedHintLayout;
559
560    private TextDirectionHeuristic mTextDir;
561
562    private InputFilter[] mFilters = NO_FILTERS;
563
564    private volatile Locale mCurrentSpellCheckerLocaleCache;
565
566    // It is possible to have a selection even when mEditor is null (programmatically set, like when
567    // a link is pressed). These highlight-related fields do not go in mEditor.
568    int mHighlightColor = 0x6633B5E5;
569    private Path mHighlightPath;
570    private final Paint mHighlightPaint;
571    private boolean mHighlightPathBogus = true;
572
573    // Although these fields are specific to editable text, they are not added to Editor because
574    // they are defined by the TextView's style and are theme-dependent.
575    int mCursorDrawableRes;
576    // These four fields, could be moved to Editor, since we know their default values and we
577    // could condition the creation of the Editor to a non standard value. This is however
578    // brittle since the hardcoded values here (such as
579    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
580    // default style is modified.
581    int mTextSelectHandleLeftRes;
582    int mTextSelectHandleRightRes;
583    int mTextSelectHandleRes;
584    int mTextEditSuggestionItemLayout;
585
586    /**
587     * EditText specific data, created on demand when one of the Editor fields is used.
588     * See {@link #createEditorIfNeeded()}.
589     */
590    private Editor mEditor;
591
592    /*
593     * Kick-start the font cache for the zygote process (to pay the cost of
594     * initializing freetype for our default font only once).
595     */
596    static {
597        Paint p = new Paint();
598        p.setAntiAlias(true);
599        // We don't care about the result, just the side-effect of measuring.
600        p.measureText("H");
601    }
602
603    /**
604     * Interface definition for a callback to be invoked when an action is
605     * performed on the editor.
606     */
607    public interface OnEditorActionListener {
608        /**
609         * Called when an action is being performed.
610         *
611         * @param v The view that was clicked.
612         * @param actionId Identifier of the action.  This will be either the
613         * identifier you supplied, or {@link EditorInfo#IME_NULL
614         * EditorInfo.IME_NULL} if being called due to the enter key
615         * being pressed.
616         * @param event If triggered by an enter key, this is the event;
617         * otherwise, this is null.
618         * @return Return true if you have consumed the action, else false.
619         */
620        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
621    }
622
623    public TextView(Context context) {
624        this(context, null);
625    }
626
627    public TextView(Context context, AttributeSet attrs) {
628        this(context, attrs, com.android.internal.R.attr.textViewStyle);
629    }
630
631    public TextView(Context context, AttributeSet attrs, int defStyleAttr) {
632        this(context, attrs, defStyleAttr, 0);
633    }
634
635    @SuppressWarnings("deprecation")
636    public TextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
637        super(context, attrs, defStyleAttr, defStyleRes);
638
639        mText = "";
640
641        final Resources res = getResources();
642        final CompatibilityInfo compat = res.getCompatibilityInfo();
643
644        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
645        mTextPaint.density = res.getDisplayMetrics().density;
646        mTextPaint.setCompatibilityScaling(compat.applicationScale);
647
648        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
649        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
650
651        mMovement = getDefaultMovementMethod();
652
653        mTransformation = null;
654
655        int textColorHighlight = 0;
656        ColorStateList textColor = null;
657        ColorStateList textColorHint = null;
658        ColorStateList textColorLink = null;
659        int textSize = 15;
660        String fontFamily = null;
661        int typefaceIndex = -1;
662        int styleIndex = -1;
663        boolean allCaps = false;
664        int shadowcolor = 0;
665        float dx = 0, dy = 0, r = 0;
666        boolean elegant = false;
667        float letterSpacing = 0;
668        String fontFeatureSettings = null;
669
670        final Resources.Theme theme = context.getTheme();
671
672        /*
673         * Look the appearance up without checking first if it exists because
674         * almost every TextView has one and it greatly simplifies the logic
675         * to be able to parse the appearance first and then let specific tags
676         * for this View override it.
677         */
678        TypedArray a = theme.obtainStyledAttributes(attrs,
679                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
680        TypedArray appearance = null;
681        int ap = a.getResourceId(
682                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
683        a.recycle();
684        if (ap != -1) {
685            appearance = theme.obtainStyledAttributes(
686                    ap, com.android.internal.R.styleable.TextAppearance);
687        }
688        if (appearance != null) {
689            int n = appearance.getIndexCount();
690            for (int i = 0; i < n; i++) {
691                int attr = appearance.getIndex(i);
692
693                switch (attr) {
694                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
695                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
696                    break;
697
698                case com.android.internal.R.styleable.TextAppearance_textColor:
699                    textColor = appearance.getColorStateList(attr);
700                    break;
701
702                case com.android.internal.R.styleable.TextAppearance_textColorHint:
703                    textColorHint = appearance.getColorStateList(attr);
704                    break;
705
706                case com.android.internal.R.styleable.TextAppearance_textColorLink:
707                    textColorLink = appearance.getColorStateList(attr);
708                    break;
709
710                case com.android.internal.R.styleable.TextAppearance_textSize:
711                    textSize = appearance.getDimensionPixelSize(attr, textSize);
712                    break;
713
714                case com.android.internal.R.styleable.TextAppearance_typeface:
715                    typefaceIndex = appearance.getInt(attr, -1);
716                    break;
717
718                case com.android.internal.R.styleable.TextAppearance_fontFamily:
719                    fontFamily = appearance.getString(attr);
720                    break;
721
722                case com.android.internal.R.styleable.TextAppearance_textStyle:
723                    styleIndex = appearance.getInt(attr, -1);
724                    break;
725
726                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
727                    allCaps = appearance.getBoolean(attr, false);
728                    break;
729
730                case com.android.internal.R.styleable.TextAppearance_shadowColor:
731                    shadowcolor = appearance.getInt(attr, 0);
732                    break;
733
734                case com.android.internal.R.styleable.TextAppearance_shadowDx:
735                    dx = appearance.getFloat(attr, 0);
736                    break;
737
738                case com.android.internal.R.styleable.TextAppearance_shadowDy:
739                    dy = appearance.getFloat(attr, 0);
740                    break;
741
742                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
743                    r = appearance.getFloat(attr, 0);
744                    break;
745
746                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
747                    elegant = appearance.getBoolean(attr, false);
748                    break;
749
750                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
751                    letterSpacing = appearance.getFloat(attr, 0);
752                    break;
753
754                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
755                    fontFeatureSettings = appearance.getString(attr);
756                    break;
757                }
758            }
759
760            appearance.recycle();
761        }
762
763        boolean editable = getDefaultEditable();
764        CharSequence inputMethod = null;
765        int numeric = 0;
766        CharSequence digits = null;
767        boolean phone = false;
768        boolean autotext = false;
769        int autocap = -1;
770        int buffertype = 0;
771        boolean selectallonfocus = false;
772        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
773            drawableBottom = null, drawableStart = null, drawableEnd = null;
774        int drawablePadding = 0;
775        int ellipsize = -1;
776        boolean singleLine = false;
777        int maxlength = -1;
778        CharSequence text = "";
779        CharSequence hint = null;
780        boolean password = false;
781        int inputType = EditorInfo.TYPE_NULL;
782
783        a = theme.obtainStyledAttributes(
784                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
785
786        int n = a.getIndexCount();
787        for (int i = 0; i < n; i++) {
788            int attr = a.getIndex(i);
789
790            switch (attr) {
791            case com.android.internal.R.styleable.TextView_editable:
792                editable = a.getBoolean(attr, editable);
793                break;
794
795            case com.android.internal.R.styleable.TextView_inputMethod:
796                inputMethod = a.getText(attr);
797                break;
798
799            case com.android.internal.R.styleable.TextView_numeric:
800                numeric = a.getInt(attr, numeric);
801                break;
802
803            case com.android.internal.R.styleable.TextView_digits:
804                digits = a.getText(attr);
805                break;
806
807            case com.android.internal.R.styleable.TextView_phoneNumber:
808                phone = a.getBoolean(attr, phone);
809                break;
810
811            case com.android.internal.R.styleable.TextView_autoText:
812                autotext = a.getBoolean(attr, autotext);
813                break;
814
815            case com.android.internal.R.styleable.TextView_capitalize:
816                autocap = a.getInt(attr, autocap);
817                break;
818
819            case com.android.internal.R.styleable.TextView_bufferType:
820                buffertype = a.getInt(attr, buffertype);
821                break;
822
823            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
824                selectallonfocus = a.getBoolean(attr, selectallonfocus);
825                break;
826
827            case com.android.internal.R.styleable.TextView_autoLink:
828                mAutoLinkMask = a.getInt(attr, 0);
829                break;
830
831            case com.android.internal.R.styleable.TextView_linksClickable:
832                mLinksClickable = a.getBoolean(attr, true);
833                break;
834
835            case com.android.internal.R.styleable.TextView_drawableLeft:
836                drawableLeft = a.getDrawable(attr);
837                break;
838
839            case com.android.internal.R.styleable.TextView_drawableTop:
840                drawableTop = a.getDrawable(attr);
841                break;
842
843            case com.android.internal.R.styleable.TextView_drawableRight:
844                drawableRight = a.getDrawable(attr);
845                break;
846
847            case com.android.internal.R.styleable.TextView_drawableBottom:
848                drawableBottom = a.getDrawable(attr);
849                break;
850
851            case com.android.internal.R.styleable.TextView_drawableStart:
852                drawableStart = a.getDrawable(attr);
853                break;
854
855            case com.android.internal.R.styleable.TextView_drawableEnd:
856                drawableEnd = a.getDrawable(attr);
857                break;
858
859            case com.android.internal.R.styleable.TextView_drawablePadding:
860                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
861                break;
862
863            case com.android.internal.R.styleable.TextView_maxLines:
864                setMaxLines(a.getInt(attr, -1));
865                break;
866
867            case com.android.internal.R.styleable.TextView_maxHeight:
868                setMaxHeight(a.getDimensionPixelSize(attr, -1));
869                break;
870
871            case com.android.internal.R.styleable.TextView_lines:
872                setLines(a.getInt(attr, -1));
873                break;
874
875            case com.android.internal.R.styleable.TextView_height:
876                setHeight(a.getDimensionPixelSize(attr, -1));
877                break;
878
879            case com.android.internal.R.styleable.TextView_minLines:
880                setMinLines(a.getInt(attr, -1));
881                break;
882
883            case com.android.internal.R.styleable.TextView_minHeight:
884                setMinHeight(a.getDimensionPixelSize(attr, -1));
885                break;
886
887            case com.android.internal.R.styleable.TextView_maxEms:
888                setMaxEms(a.getInt(attr, -1));
889                break;
890
891            case com.android.internal.R.styleable.TextView_maxWidth:
892                setMaxWidth(a.getDimensionPixelSize(attr, -1));
893                break;
894
895            case com.android.internal.R.styleable.TextView_ems:
896                setEms(a.getInt(attr, -1));
897                break;
898
899            case com.android.internal.R.styleable.TextView_width:
900                setWidth(a.getDimensionPixelSize(attr, -1));
901                break;
902
903            case com.android.internal.R.styleable.TextView_minEms:
904                setMinEms(a.getInt(attr, -1));
905                break;
906
907            case com.android.internal.R.styleable.TextView_minWidth:
908                setMinWidth(a.getDimensionPixelSize(attr, -1));
909                break;
910
911            case com.android.internal.R.styleable.TextView_gravity:
912                setGravity(a.getInt(attr, -1));
913                break;
914
915            case com.android.internal.R.styleable.TextView_hint:
916                hint = a.getText(attr);
917                break;
918
919            case com.android.internal.R.styleable.TextView_text:
920                text = a.getText(attr);
921                break;
922
923            case com.android.internal.R.styleable.TextView_scrollHorizontally:
924                if (a.getBoolean(attr, false)) {
925                    setHorizontallyScrolling(true);
926                }
927                break;
928
929            case com.android.internal.R.styleable.TextView_singleLine:
930                singleLine = a.getBoolean(attr, singleLine);
931                break;
932
933            case com.android.internal.R.styleable.TextView_ellipsize:
934                ellipsize = a.getInt(attr, ellipsize);
935                break;
936
937            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
938                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
939                break;
940
941            case com.android.internal.R.styleable.TextView_includeFontPadding:
942                if (!a.getBoolean(attr, true)) {
943                    setIncludeFontPadding(false);
944                }
945                break;
946
947            case com.android.internal.R.styleable.TextView_cursorVisible:
948                if (!a.getBoolean(attr, true)) {
949                    setCursorVisible(false);
950                }
951                break;
952
953            case com.android.internal.R.styleable.TextView_maxLength:
954                maxlength = a.getInt(attr, -1);
955                break;
956
957            case com.android.internal.R.styleable.TextView_textScaleX:
958                setTextScaleX(a.getFloat(attr, 1.0f));
959                break;
960
961            case com.android.internal.R.styleable.TextView_freezesText:
962                mFreezesText = a.getBoolean(attr, false);
963                break;
964
965            case com.android.internal.R.styleable.TextView_shadowColor:
966                shadowcolor = a.getInt(attr, 0);
967                break;
968
969            case com.android.internal.R.styleable.TextView_shadowDx:
970                dx = a.getFloat(attr, 0);
971                break;
972
973            case com.android.internal.R.styleable.TextView_shadowDy:
974                dy = a.getFloat(attr, 0);
975                break;
976
977            case com.android.internal.R.styleable.TextView_shadowRadius:
978                r = a.getFloat(attr, 0);
979                break;
980
981            case com.android.internal.R.styleable.TextView_enabled:
982                setEnabled(a.getBoolean(attr, isEnabled()));
983                break;
984
985            case com.android.internal.R.styleable.TextView_textColorHighlight:
986                textColorHighlight = a.getColor(attr, textColorHighlight);
987                break;
988
989            case com.android.internal.R.styleable.TextView_textColor:
990                textColor = a.getColorStateList(attr);
991                break;
992
993            case com.android.internal.R.styleable.TextView_textColorHint:
994                textColorHint = a.getColorStateList(attr);
995                break;
996
997            case com.android.internal.R.styleable.TextView_textColorLink:
998                textColorLink = a.getColorStateList(attr);
999                break;
1000
1001            case com.android.internal.R.styleable.TextView_textSize:
1002                textSize = a.getDimensionPixelSize(attr, textSize);
1003                break;
1004
1005            case com.android.internal.R.styleable.TextView_typeface:
1006                typefaceIndex = a.getInt(attr, typefaceIndex);
1007                break;
1008
1009            case com.android.internal.R.styleable.TextView_textStyle:
1010                styleIndex = a.getInt(attr, styleIndex);
1011                break;
1012
1013            case com.android.internal.R.styleable.TextView_fontFamily:
1014                fontFamily = a.getString(attr);
1015                break;
1016
1017            case com.android.internal.R.styleable.TextView_password:
1018                password = a.getBoolean(attr, password);
1019                break;
1020
1021            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1022                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1023                break;
1024
1025            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1026                mSpacingMult = a.getFloat(attr, mSpacingMult);
1027                break;
1028
1029            case com.android.internal.R.styleable.TextView_inputType:
1030                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1031                break;
1032
1033            case com.android.internal.R.styleable.TextView_imeOptions:
1034                createEditorIfNeeded();
1035                mEditor.createInputContentTypeIfNeeded();
1036                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1037                        mEditor.mInputContentType.imeOptions);
1038                break;
1039
1040            case com.android.internal.R.styleable.TextView_imeActionLabel:
1041                createEditorIfNeeded();
1042                mEditor.createInputContentTypeIfNeeded();
1043                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1044                break;
1045
1046            case com.android.internal.R.styleable.TextView_imeActionId:
1047                createEditorIfNeeded();
1048                mEditor.createInputContentTypeIfNeeded();
1049                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1050                        mEditor.mInputContentType.imeActionId);
1051                break;
1052
1053            case com.android.internal.R.styleable.TextView_privateImeOptions:
1054                setPrivateImeOptions(a.getString(attr));
1055                break;
1056
1057            case com.android.internal.R.styleable.TextView_editorExtras:
1058                try {
1059                    setInputExtras(a.getResourceId(attr, 0));
1060                } catch (XmlPullParserException e) {
1061                    Log.w(LOG_TAG, "Failure reading input extras", e);
1062                } catch (IOException e) {
1063                    Log.w(LOG_TAG, "Failure reading input extras", e);
1064                }
1065                break;
1066
1067            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1068                mCursorDrawableRes = a.getResourceId(attr, 0);
1069                break;
1070
1071            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1072                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1073                break;
1074
1075            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1076                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1077                break;
1078
1079            case com.android.internal.R.styleable.TextView_textSelectHandle:
1080                mTextSelectHandleRes = a.getResourceId(attr, 0);
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1084                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1085                break;
1086
1087            case com.android.internal.R.styleable.TextView_textIsSelectable:
1088                setTextIsSelectable(a.getBoolean(attr, false));
1089                break;
1090
1091            case com.android.internal.R.styleable.TextView_textAllCaps:
1092                allCaps = a.getBoolean(attr, false);
1093                break;
1094
1095            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1096                elegant = a.getBoolean(attr, false);
1097                break;
1098
1099            case com.android.internal.R.styleable.TextView_letterSpacing:
1100                letterSpacing = a.getFloat(attr, 0);
1101                break;
1102
1103            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1104                fontFeatureSettings = a.getString(attr);
1105                break;
1106            }
1107        }
1108        a.recycle();
1109
1110        BufferType bufferType = BufferType.EDITABLE;
1111
1112        final int variation =
1113                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1114        final boolean passwordInputType = variation
1115                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1116        final boolean webPasswordInputType = variation
1117                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1118        final boolean numberPasswordInputType = variation
1119                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1120
1121        if (inputMethod != null) {
1122            Class<?> c;
1123
1124            try {
1125                c = Class.forName(inputMethod.toString());
1126            } catch (ClassNotFoundException ex) {
1127                throw new RuntimeException(ex);
1128            }
1129
1130            try {
1131                createEditorIfNeeded();
1132                mEditor.mKeyListener = (KeyListener) c.newInstance();
1133            } catch (InstantiationException ex) {
1134                throw new RuntimeException(ex);
1135            } catch (IllegalAccessException ex) {
1136                throw new RuntimeException(ex);
1137            }
1138            try {
1139                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1140                        ? inputType
1141                        : mEditor.mKeyListener.getInputType();
1142            } catch (IncompatibleClassChangeError e) {
1143                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1144            }
1145        } else if (digits != null) {
1146            createEditorIfNeeded();
1147            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1148            // If no input type was specified, we will default to generic
1149            // text, since we can't tell the IME about the set of digits
1150            // that was selected.
1151            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1152                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1153        } else if (inputType != EditorInfo.TYPE_NULL) {
1154            setInputType(inputType, true);
1155            // If set, the input type overrides what was set using the deprecated singleLine flag.
1156            singleLine = !isMultilineInputType(inputType);
1157        } else if (phone) {
1158            createEditorIfNeeded();
1159            mEditor.mKeyListener = DialerKeyListener.getInstance();
1160            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1161        } else if (numeric != 0) {
1162            createEditorIfNeeded();
1163            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1164                                                   (numeric & DECIMAL) != 0);
1165            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1166            if ((numeric & SIGNED) != 0) {
1167                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1168            }
1169            if ((numeric & DECIMAL) != 0) {
1170                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1171            }
1172            mEditor.mInputType = inputType;
1173        } else if (autotext || autocap != -1) {
1174            TextKeyListener.Capitalize cap;
1175
1176            inputType = EditorInfo.TYPE_CLASS_TEXT;
1177
1178            switch (autocap) {
1179            case 1:
1180                cap = TextKeyListener.Capitalize.SENTENCES;
1181                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1182                break;
1183
1184            case 2:
1185                cap = TextKeyListener.Capitalize.WORDS;
1186                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1187                break;
1188
1189            case 3:
1190                cap = TextKeyListener.Capitalize.CHARACTERS;
1191                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1192                break;
1193
1194            default:
1195                cap = TextKeyListener.Capitalize.NONE;
1196                break;
1197            }
1198
1199            createEditorIfNeeded();
1200            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1201            mEditor.mInputType = inputType;
1202        } else if (isTextSelectable()) {
1203            // Prevent text changes from keyboard.
1204            if (mEditor != null) {
1205                mEditor.mKeyListener = null;
1206                mEditor.mInputType = EditorInfo.TYPE_NULL;
1207            }
1208            bufferType = BufferType.SPANNABLE;
1209            // So that selection can be changed using arrow keys and touch is handled.
1210            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1211        } else if (editable) {
1212            createEditorIfNeeded();
1213            mEditor.mKeyListener = TextKeyListener.getInstance();
1214            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1215        } else {
1216            if (mEditor != null) mEditor.mKeyListener = null;
1217
1218            switch (buffertype) {
1219                case 0:
1220                    bufferType = BufferType.NORMAL;
1221                    break;
1222                case 1:
1223                    bufferType = BufferType.SPANNABLE;
1224                    break;
1225                case 2:
1226                    bufferType = BufferType.EDITABLE;
1227                    break;
1228            }
1229        }
1230
1231        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1232                webPasswordInputType, numberPasswordInputType);
1233
1234        if (selectallonfocus) {
1235            createEditorIfNeeded();
1236            mEditor.mSelectAllOnFocus = true;
1237
1238            if (bufferType == BufferType.NORMAL)
1239                bufferType = BufferType.SPANNABLE;
1240        }
1241
1242        // This call will save the initial left/right drawables
1243        setCompoundDrawablesWithIntrinsicBounds(
1244            drawableLeft, drawableTop, drawableRight, drawableBottom);
1245        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1246        setCompoundDrawablePadding(drawablePadding);
1247
1248        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1249        // of lines of height are unchanged for multi-line TextViews.
1250        setInputTypeSingleLine(singleLine);
1251        applySingleLine(singleLine, singleLine, singleLine);
1252
1253        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1254                ellipsize = 3; // END
1255        }
1256
1257        switch (ellipsize) {
1258            case 1:
1259                setEllipsize(TextUtils.TruncateAt.START);
1260                break;
1261            case 2:
1262                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1263                break;
1264            case 3:
1265                setEllipsize(TextUtils.TruncateAt.END);
1266                break;
1267            case 4:
1268                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1269                    setHorizontalFadingEdgeEnabled(true);
1270                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1271                } else {
1272                    setHorizontalFadingEdgeEnabled(false);
1273                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1274                }
1275                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1276                break;
1277        }
1278
1279        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1280        setHintTextColor(textColorHint);
1281        setLinkTextColor(textColorLink);
1282        if (textColorHighlight != 0) {
1283            setHighlightColor(textColorHighlight);
1284        }
1285        setRawTextSize(textSize);
1286        setElegantTextHeight(elegant);
1287        setLetterSpacing(letterSpacing);
1288        setFontFeatureSettings(fontFeatureSettings);
1289
1290        if (allCaps) {
1291            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1292        }
1293
1294        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1295            setTransformationMethod(PasswordTransformationMethod.getInstance());
1296            typefaceIndex = MONOSPACE;
1297        } else if (mEditor != null &&
1298                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1299                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1300            typefaceIndex = MONOSPACE;
1301        }
1302
1303        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1304
1305        if (shadowcolor != 0) {
1306            setShadowLayer(r, dx, dy, shadowcolor);
1307        }
1308
1309        if (maxlength >= 0) {
1310            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1311        } else {
1312            setFilters(NO_FILTERS);
1313        }
1314
1315        setText(text, bufferType);
1316        if (hint != null) setHint(hint);
1317
1318        /*
1319         * Views are not normally focusable unless specified to be.
1320         * However, TextViews that have input or movement methods *are*
1321         * focusable by default.
1322         */
1323        a = context.obtainStyledAttributes(
1324                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1325
1326        boolean focusable = mMovement != null || getKeyListener() != null;
1327        boolean clickable = focusable || isClickable();
1328        boolean longClickable = focusable || isLongClickable();
1329
1330        n = a.getIndexCount();
1331        for (int i = 0; i < n; i++) {
1332            int attr = a.getIndex(i);
1333
1334            switch (attr) {
1335            case com.android.internal.R.styleable.View_focusable:
1336                focusable = a.getBoolean(attr, focusable);
1337                break;
1338
1339            case com.android.internal.R.styleable.View_clickable:
1340                clickable = a.getBoolean(attr, clickable);
1341                break;
1342
1343            case com.android.internal.R.styleable.View_longClickable:
1344                longClickable = a.getBoolean(attr, longClickable);
1345                break;
1346            }
1347        }
1348        a.recycle();
1349
1350        setFocusable(focusable);
1351        setClickable(clickable);
1352        setLongClickable(longClickable);
1353
1354        if (mEditor != null) mEditor.prepareCursorControllers();
1355
1356        // If not explicitly specified this view is important for accessibility.
1357        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1358            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1359        }
1360    }
1361
1362    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1363        Typeface tf = null;
1364        if (familyName != null) {
1365            tf = Typeface.create(familyName, styleIndex);
1366            if (tf != null) {
1367                setTypeface(tf);
1368                return;
1369            }
1370        }
1371        switch (typefaceIndex) {
1372            case SANS:
1373                tf = Typeface.SANS_SERIF;
1374                break;
1375
1376            case SERIF:
1377                tf = Typeface.SERIF;
1378                break;
1379
1380            case MONOSPACE:
1381                tf = Typeface.MONOSPACE;
1382                break;
1383        }
1384
1385        setTypeface(tf, styleIndex);
1386    }
1387
1388    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1389        boolean hasRelativeDrawables = (start != null) || (end != null);
1390        if (hasRelativeDrawables) {
1391            Drawables dr = mDrawables;
1392            if (dr == null) {
1393                mDrawables = dr = new Drawables(getContext());
1394            }
1395            mDrawables.mOverride = true;
1396            final Rect compoundRect = dr.mCompoundRect;
1397            int[] state = getDrawableState();
1398            if (start != null) {
1399                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1400                start.setState(state);
1401                start.copyBounds(compoundRect);
1402                start.setCallback(this);
1403
1404                dr.mDrawableStart = start;
1405                dr.mDrawableSizeStart = compoundRect.width();
1406                dr.mDrawableHeightStart = compoundRect.height();
1407            } else {
1408                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1409            }
1410            if (end != null) {
1411                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1412                end.setState(state);
1413                end.copyBounds(compoundRect);
1414                end.setCallback(this);
1415
1416                dr.mDrawableEnd = end;
1417                dr.mDrawableSizeEnd = compoundRect.width();
1418                dr.mDrawableHeightEnd = compoundRect.height();
1419            } else {
1420                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1421            }
1422            resetResolvedDrawables();
1423            resolveDrawables();
1424        }
1425    }
1426
1427    @Override
1428    public void setEnabled(boolean enabled) {
1429        if (enabled == isEnabled()) {
1430            return;
1431        }
1432
1433        if (!enabled) {
1434            // Hide the soft input if the currently active TextView is disabled
1435            InputMethodManager imm = InputMethodManager.peekInstance();
1436            if (imm != null && imm.isActive(this)) {
1437                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1438            }
1439        }
1440
1441        super.setEnabled(enabled);
1442
1443        if (enabled) {
1444            // Make sure IME is updated with current editor info.
1445            InputMethodManager imm = InputMethodManager.peekInstance();
1446            if (imm != null) imm.restartInput(this);
1447        }
1448
1449        // Will change text color
1450        if (mEditor != null) {
1451            mEditor.invalidateTextDisplayList();
1452            mEditor.prepareCursorControllers();
1453
1454            // start or stop the cursor blinking as appropriate
1455            mEditor.makeBlink();
1456        }
1457    }
1458
1459    /**
1460     * Sets the typeface and style in which the text should be displayed,
1461     * and turns on the fake bold and italic bits in the Paint if the
1462     * Typeface that you provided does not have all the bits in the
1463     * style that you specified.
1464     *
1465     * @attr ref android.R.styleable#TextView_typeface
1466     * @attr ref android.R.styleable#TextView_textStyle
1467     */
1468    public void setTypeface(Typeface tf, int style) {
1469        if (style > 0) {
1470            if (tf == null) {
1471                tf = Typeface.defaultFromStyle(style);
1472            } else {
1473                tf = Typeface.create(tf, style);
1474            }
1475
1476            setTypeface(tf);
1477            // now compute what (if any) algorithmic styling is needed
1478            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1479            int need = style & ~typefaceStyle;
1480            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1481            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1482        } else {
1483            mTextPaint.setFakeBoldText(false);
1484            mTextPaint.setTextSkewX(0);
1485            setTypeface(tf);
1486        }
1487    }
1488
1489    /**
1490     * Subclasses override this to specify that they have a KeyListener
1491     * by default even if not specifically called for in the XML options.
1492     */
1493    protected boolean getDefaultEditable() {
1494        return false;
1495    }
1496
1497    /**
1498     * Subclasses override this to specify a default movement method.
1499     */
1500    protected MovementMethod getDefaultMovementMethod() {
1501        return null;
1502    }
1503
1504    /**
1505     * Return the text the TextView is displaying. If setText() was called with
1506     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1507     * the return value from this method to Spannable or Editable, respectively.
1508     *
1509     * Note: The content of the return value should not be modified. If you want
1510     * a modifiable one, you should make your own copy first.
1511     *
1512     * @attr ref android.R.styleable#TextView_text
1513     */
1514    @ViewDebug.CapturedViewProperty
1515    public CharSequence getText() {
1516        return mText;
1517    }
1518
1519    /**
1520     * Returns the length, in characters, of the text managed by this TextView
1521     */
1522    public int length() {
1523        return mText.length();
1524    }
1525
1526    /**
1527     * Return the text the TextView is displaying as an Editable object.  If
1528     * the text is not editable, null is returned.
1529     *
1530     * @see #getText
1531     */
1532    public Editable getEditableText() {
1533        return (mText instanceof Editable) ? (Editable)mText : null;
1534    }
1535
1536    /**
1537     * @return the height of one standard line in pixels.  Note that markup
1538     * within the text can cause individual lines to be taller or shorter
1539     * than this height, and the layout may contain additional first-
1540     * or last-line padding.
1541     */
1542    public int getLineHeight() {
1543        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1544    }
1545
1546    /**
1547     * @return the Layout that is currently being used to display the text.
1548     * This can be null if the text or width has recently changes.
1549     */
1550    public final Layout getLayout() {
1551        return mLayout;
1552    }
1553
1554    /**
1555     * @return the Layout that is currently being used to display the hint text.
1556     * This can be null.
1557     */
1558    final Layout getHintLayout() {
1559        return mHintLayout;
1560    }
1561
1562    /**
1563     * Retrieve the {@link android.content.UndoManager} that is currently associated
1564     * with this TextView.  By default there is no associated UndoManager, so null
1565     * is returned.  One can be associated with the TextView through
1566     * {@link #setUndoManager(android.content.UndoManager, String)}
1567     *
1568     * @hide
1569     */
1570    public final UndoManager getUndoManager() {
1571        return mEditor == null ? null : mEditor.mUndoManager;
1572    }
1573
1574    /**
1575     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1576     * done, all edit operations on the TextView will result in appropriate
1577     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1578     * stack.
1579     *
1580     * @param undoManager The {@link android.content.UndoManager} to associate with
1581     * this TextView, or null to clear any existing association.
1582     * @param tag String tag identifying this particular TextView owner in the
1583     * UndoManager.  This is used to keep the correct association with the
1584     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1585     *
1586     * @hide
1587     */
1588    public final void setUndoManager(UndoManager undoManager, String tag) {
1589        if (undoManager != null) {
1590            createEditorIfNeeded();
1591            mEditor.mUndoManager = undoManager;
1592            mEditor.mUndoOwner = undoManager.getOwner(tag, this);
1593            mEditor.mUndoInputFilter = new Editor.UndoInputFilter(mEditor);
1594            if (!(mText instanceof Editable)) {
1595                setText(mText, BufferType.EDITABLE);
1596            }
1597
1598            setFilters((Editable) mText, mFilters);
1599        } else if (mEditor != null) {
1600            // XXX need to destroy all associated state.
1601            mEditor.mUndoManager = null;
1602            mEditor.mUndoOwner = null;
1603            mEditor.mUndoInputFilter = null;
1604        }
1605    }
1606
1607    /**
1608     * @return the current key listener for this TextView.
1609     * This will frequently be null for non-EditText TextViews.
1610     *
1611     * @attr ref android.R.styleable#TextView_numeric
1612     * @attr ref android.R.styleable#TextView_digits
1613     * @attr ref android.R.styleable#TextView_phoneNumber
1614     * @attr ref android.R.styleable#TextView_inputMethod
1615     * @attr ref android.R.styleable#TextView_capitalize
1616     * @attr ref android.R.styleable#TextView_autoText
1617     */
1618    public final KeyListener getKeyListener() {
1619        return mEditor == null ? null : mEditor.mKeyListener;
1620    }
1621
1622    /**
1623     * Sets the key listener to be used with this TextView.  This can be null
1624     * to disallow user input.  Note that this method has significant and
1625     * subtle interactions with soft keyboards and other input method:
1626     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1627     * for important details.  Calling this method will replace the current
1628     * content type of the text view with the content type returned by the
1629     * key listener.
1630     * <p>
1631     * Be warned that if you want a TextView with a key listener or movement
1632     * method not to be focusable, or if you want a TextView without a
1633     * key listener or movement method to be focusable, you must call
1634     * {@link #setFocusable} again after calling this to get the focusability
1635     * back the way you want it.
1636     *
1637     * @attr ref android.R.styleable#TextView_numeric
1638     * @attr ref android.R.styleable#TextView_digits
1639     * @attr ref android.R.styleable#TextView_phoneNumber
1640     * @attr ref android.R.styleable#TextView_inputMethod
1641     * @attr ref android.R.styleable#TextView_capitalize
1642     * @attr ref android.R.styleable#TextView_autoText
1643     */
1644    public void setKeyListener(KeyListener input) {
1645        setKeyListenerOnly(input);
1646        fixFocusableAndClickableSettings();
1647
1648        if (input != null) {
1649            createEditorIfNeeded();
1650            try {
1651                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1652            } catch (IncompatibleClassChangeError e) {
1653                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1654            }
1655            // Change inputType, without affecting transformation.
1656            // No need to applySingleLine since mSingleLine is unchanged.
1657            setInputTypeSingleLine(mSingleLine);
1658        } else {
1659            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1660        }
1661
1662        InputMethodManager imm = InputMethodManager.peekInstance();
1663        if (imm != null) imm.restartInput(this);
1664    }
1665
1666    private void setKeyListenerOnly(KeyListener input) {
1667        if (mEditor == null && input == null) return; // null is the default value
1668
1669        createEditorIfNeeded();
1670        if (mEditor.mKeyListener != input) {
1671            mEditor.mKeyListener = input;
1672            if (input != null && !(mText instanceof Editable)) {
1673                setText(mText);
1674            }
1675
1676            setFilters((Editable) mText, mFilters);
1677        }
1678    }
1679
1680    /**
1681     * @return the movement method being used for this TextView.
1682     * This will frequently be null for non-EditText TextViews.
1683     */
1684    public final MovementMethod getMovementMethod() {
1685        return mMovement;
1686    }
1687
1688    /**
1689     * Sets the movement method (arrow key handler) to be used for
1690     * this TextView.  This can be null to disallow using the arrow keys
1691     * to move the cursor or scroll the view.
1692     * <p>
1693     * Be warned that if you want a TextView with a key listener or movement
1694     * method not to be focusable, or if you want a TextView without a
1695     * key listener or movement method to be focusable, you must call
1696     * {@link #setFocusable} again after calling this to get the focusability
1697     * back the way you want it.
1698     */
1699    public final void setMovementMethod(MovementMethod movement) {
1700        if (mMovement != movement) {
1701            mMovement = movement;
1702
1703            if (movement != null && !(mText instanceof Spannable)) {
1704                setText(mText);
1705            }
1706
1707            fixFocusableAndClickableSettings();
1708
1709            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1710            // mMovement
1711            if (mEditor != null) mEditor.prepareCursorControllers();
1712        }
1713    }
1714
1715    private void fixFocusableAndClickableSettings() {
1716        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1717            setFocusable(true);
1718            setClickable(true);
1719            setLongClickable(true);
1720        } else {
1721            setFocusable(false);
1722            setClickable(false);
1723            setLongClickable(false);
1724        }
1725    }
1726
1727    /**
1728     * @return the current transformation method for this TextView.
1729     * This will frequently be null except for single-line and password
1730     * fields.
1731     *
1732     * @attr ref android.R.styleable#TextView_password
1733     * @attr ref android.R.styleable#TextView_singleLine
1734     */
1735    public final TransformationMethod getTransformationMethod() {
1736        return mTransformation;
1737    }
1738
1739    /**
1740     * Sets the transformation that is applied to the text that this
1741     * TextView is displaying.
1742     *
1743     * @attr ref android.R.styleable#TextView_password
1744     * @attr ref android.R.styleable#TextView_singleLine
1745     */
1746    public final void setTransformationMethod(TransformationMethod method) {
1747        if (method == mTransformation) {
1748            // Avoid the setText() below if the transformation is
1749            // the same.
1750            return;
1751        }
1752        if (mTransformation != null) {
1753            if (mText instanceof Spannable) {
1754                ((Spannable) mText).removeSpan(mTransformation);
1755            }
1756        }
1757
1758        mTransformation = method;
1759
1760        if (method instanceof TransformationMethod2) {
1761            TransformationMethod2 method2 = (TransformationMethod2) method;
1762            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1763            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1764        } else {
1765            mAllowTransformationLengthChange = false;
1766        }
1767
1768        setText(mText);
1769
1770        if (hasPasswordTransformationMethod()) {
1771            notifyViewAccessibilityStateChangedIfNeeded(
1772                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1773        }
1774    }
1775
1776    /**
1777     * Returns the top padding of the view, plus space for the top
1778     * Drawable if any.
1779     */
1780    public int getCompoundPaddingTop() {
1781        final Drawables dr = mDrawables;
1782        if (dr == null || dr.mDrawableTop == null) {
1783            return mPaddingTop;
1784        } else {
1785            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1786        }
1787    }
1788
1789    /**
1790     * Returns the bottom padding of the view, plus space for the bottom
1791     * Drawable if any.
1792     */
1793    public int getCompoundPaddingBottom() {
1794        final Drawables dr = mDrawables;
1795        if (dr == null || dr.mDrawableBottom == null) {
1796            return mPaddingBottom;
1797        } else {
1798            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1799        }
1800    }
1801
1802    /**
1803     * Returns the left padding of the view, plus space for the left
1804     * Drawable if any.
1805     */
1806    public int getCompoundPaddingLeft() {
1807        final Drawables dr = mDrawables;
1808        if (dr == null || dr.mDrawableLeft == null) {
1809            return mPaddingLeft;
1810        } else {
1811            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1812        }
1813    }
1814
1815    /**
1816     * Returns the right padding of the view, plus space for the right
1817     * Drawable if any.
1818     */
1819    public int getCompoundPaddingRight() {
1820        final Drawables dr = mDrawables;
1821        if (dr == null || dr.mDrawableRight == null) {
1822            return mPaddingRight;
1823        } else {
1824            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1825        }
1826    }
1827
1828    /**
1829     * Returns the start padding of the view, plus space for the start
1830     * Drawable if any.
1831     */
1832    public int getCompoundPaddingStart() {
1833        resolveDrawables();
1834        switch(getLayoutDirection()) {
1835            default:
1836            case LAYOUT_DIRECTION_LTR:
1837                return getCompoundPaddingLeft();
1838            case LAYOUT_DIRECTION_RTL:
1839                return getCompoundPaddingRight();
1840        }
1841    }
1842
1843    /**
1844     * Returns the end padding of the view, plus space for the end
1845     * Drawable if any.
1846     */
1847    public int getCompoundPaddingEnd() {
1848        resolveDrawables();
1849        switch(getLayoutDirection()) {
1850            default:
1851            case LAYOUT_DIRECTION_LTR:
1852                return getCompoundPaddingRight();
1853            case LAYOUT_DIRECTION_RTL:
1854                return getCompoundPaddingLeft();
1855        }
1856    }
1857
1858    /**
1859     * Returns the extended top padding of the view, including both the
1860     * top Drawable if any and any extra space to keep more than maxLines
1861     * of text from showing.  It is only valid to call this after measuring.
1862     */
1863    public int getExtendedPaddingTop() {
1864        if (mMaxMode != LINES) {
1865            return getCompoundPaddingTop();
1866        }
1867
1868        if (mLayout == null) {
1869            assumeLayout();
1870        }
1871
1872        if (mLayout.getLineCount() <= mMaximum) {
1873            return getCompoundPaddingTop();
1874        }
1875
1876        int top = getCompoundPaddingTop();
1877        int bottom = getCompoundPaddingBottom();
1878        int viewht = getHeight() - top - bottom;
1879        int layoutht = mLayout.getLineTop(mMaximum);
1880
1881        if (layoutht >= viewht) {
1882            return top;
1883        }
1884
1885        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1886        if (gravity == Gravity.TOP) {
1887            return top;
1888        } else if (gravity == Gravity.BOTTOM) {
1889            return top + viewht - layoutht;
1890        } else { // (gravity == Gravity.CENTER_VERTICAL)
1891            return top + (viewht - layoutht) / 2;
1892        }
1893    }
1894
1895    /**
1896     * Returns the extended bottom padding of the view, including both the
1897     * bottom Drawable if any and any extra space to keep more than maxLines
1898     * of text from showing.  It is only valid to call this after measuring.
1899     */
1900    public int getExtendedPaddingBottom() {
1901        if (mMaxMode != LINES) {
1902            return getCompoundPaddingBottom();
1903        }
1904
1905        if (mLayout == null) {
1906            assumeLayout();
1907        }
1908
1909        if (mLayout.getLineCount() <= mMaximum) {
1910            return getCompoundPaddingBottom();
1911        }
1912
1913        int top = getCompoundPaddingTop();
1914        int bottom = getCompoundPaddingBottom();
1915        int viewht = getHeight() - top - bottom;
1916        int layoutht = mLayout.getLineTop(mMaximum);
1917
1918        if (layoutht >= viewht) {
1919            return bottom;
1920        }
1921
1922        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1923        if (gravity == Gravity.TOP) {
1924            return bottom + viewht - layoutht;
1925        } else if (gravity == Gravity.BOTTOM) {
1926            return bottom;
1927        } else { // (gravity == Gravity.CENTER_VERTICAL)
1928            return bottom + (viewht - layoutht) / 2;
1929        }
1930    }
1931
1932    /**
1933     * Returns the total left padding of the view, including the left
1934     * Drawable if any.
1935     */
1936    public int getTotalPaddingLeft() {
1937        return getCompoundPaddingLeft();
1938    }
1939
1940    /**
1941     * Returns the total right padding of the view, including the right
1942     * Drawable if any.
1943     */
1944    public int getTotalPaddingRight() {
1945        return getCompoundPaddingRight();
1946    }
1947
1948    /**
1949     * Returns the total start padding of the view, including the start
1950     * Drawable if any.
1951     */
1952    public int getTotalPaddingStart() {
1953        return getCompoundPaddingStart();
1954    }
1955
1956    /**
1957     * Returns the total end padding of the view, including the end
1958     * Drawable if any.
1959     */
1960    public int getTotalPaddingEnd() {
1961        return getCompoundPaddingEnd();
1962    }
1963
1964    /**
1965     * Returns the total top padding of the view, including the top
1966     * Drawable if any, the extra space to keep more than maxLines
1967     * from showing, and the vertical offset for gravity, if any.
1968     */
1969    public int getTotalPaddingTop() {
1970        return getExtendedPaddingTop() + getVerticalOffset(true);
1971    }
1972
1973    /**
1974     * Returns the total bottom padding of the view, including the bottom
1975     * Drawable if any, the extra space to keep more than maxLines
1976     * from showing, and the vertical offset for gravity, if any.
1977     */
1978    public int getTotalPaddingBottom() {
1979        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1980    }
1981
1982    /**
1983     * Sets the Drawables (if any) to appear to the left of, above, to the
1984     * right of, and below the text. Use {@code null} if you do not want a
1985     * Drawable there. The Drawables must already have had
1986     * {@link Drawable#setBounds} called.
1987     * <p>
1988     * Calling this method will overwrite any Drawables previously set using
1989     * {@link #setCompoundDrawablesRelative} or related methods.
1990     *
1991     * @attr ref android.R.styleable#TextView_drawableLeft
1992     * @attr ref android.R.styleable#TextView_drawableTop
1993     * @attr ref android.R.styleable#TextView_drawableRight
1994     * @attr ref android.R.styleable#TextView_drawableBottom
1995     */
1996    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
1997            @Nullable Drawable right, @Nullable Drawable bottom) {
1998        Drawables dr = mDrawables;
1999
2000        // We're switching to absolute, discard relative.
2001        if (dr != null) {
2002            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2003            dr.mDrawableStart = null;
2004            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2005            dr.mDrawableEnd = null;
2006            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2007            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2008        }
2009
2010        final boolean drawables = left != null || top != null || right != null || bottom != null;
2011        if (!drawables) {
2012            // Clearing drawables...  can we free the data structure?
2013            if (dr != null) {
2014                if (dr.mDrawablePadding == 0) {
2015                    mDrawables = null;
2016                } else {
2017                    // We need to retain the last set padding, so just clear
2018                    // out all of the fields in the existing structure.
2019                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
2020                    dr.mDrawableLeft = null;
2021                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
2022                    dr.mDrawableTop = null;
2023                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
2024                    dr.mDrawableRight = null;
2025                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
2026                    dr.mDrawableBottom = null;
2027                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2028                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2029                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2030                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2031                }
2032            }
2033        } else {
2034            if (dr == null) {
2035                mDrawables = dr = new Drawables(getContext());
2036            }
2037
2038            mDrawables.mOverride = false;
2039
2040            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
2041                dr.mDrawableLeft.setCallback(null);
2042            }
2043            dr.mDrawableLeft = left;
2044
2045            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2046                dr.mDrawableTop.setCallback(null);
2047            }
2048            dr.mDrawableTop = top;
2049
2050            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
2051                dr.mDrawableRight.setCallback(null);
2052            }
2053            dr.mDrawableRight = right;
2054
2055            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2056                dr.mDrawableBottom.setCallback(null);
2057            }
2058            dr.mDrawableBottom = bottom;
2059
2060            final Rect compoundRect = dr.mCompoundRect;
2061            int[] state;
2062
2063            state = getDrawableState();
2064
2065            if (left != null) {
2066                left.setState(state);
2067                left.copyBounds(compoundRect);
2068                left.setCallback(this);
2069                dr.mDrawableSizeLeft = compoundRect.width();
2070                dr.mDrawableHeightLeft = compoundRect.height();
2071            } else {
2072                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2073            }
2074
2075            if (right != null) {
2076                right.setState(state);
2077                right.copyBounds(compoundRect);
2078                right.setCallback(this);
2079                dr.mDrawableSizeRight = compoundRect.width();
2080                dr.mDrawableHeightRight = compoundRect.height();
2081            } else {
2082                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2083            }
2084
2085            if (top != null) {
2086                top.setState(state);
2087                top.copyBounds(compoundRect);
2088                top.setCallback(this);
2089                dr.mDrawableSizeTop = compoundRect.height();
2090                dr.mDrawableWidthTop = compoundRect.width();
2091            } else {
2092                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2093            }
2094
2095            if (bottom != null) {
2096                bottom.setState(state);
2097                bottom.copyBounds(compoundRect);
2098                bottom.setCallback(this);
2099                dr.mDrawableSizeBottom = compoundRect.height();
2100                dr.mDrawableWidthBottom = compoundRect.width();
2101            } else {
2102                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2103            }
2104        }
2105
2106        // Save initial left/right drawables
2107        if (dr != null) {
2108            dr.mDrawableLeftInitial = left;
2109            dr.mDrawableRightInitial = right;
2110        }
2111
2112        resetResolvedDrawables();
2113        resolveDrawables();
2114        invalidate();
2115        requestLayout();
2116    }
2117
2118    /**
2119     * Sets the Drawables (if any) to appear to the left of, above, to the
2120     * right of, and below the text. Use 0 if you do not want a Drawable there.
2121     * The Drawables' bounds will be set to their intrinsic bounds.
2122     * <p>
2123     * Calling this method will overwrite any Drawables previously set using
2124     * {@link #setCompoundDrawablesRelative} or related methods.
2125     *
2126     * @param left Resource identifier of the left Drawable.
2127     * @param top Resource identifier of the top Drawable.
2128     * @param right Resource identifier of the right Drawable.
2129     * @param bottom Resource identifier of the bottom Drawable.
2130     *
2131     * @attr ref android.R.styleable#TextView_drawableLeft
2132     * @attr ref android.R.styleable#TextView_drawableTop
2133     * @attr ref android.R.styleable#TextView_drawableRight
2134     * @attr ref android.R.styleable#TextView_drawableBottom
2135     */
2136    @android.view.RemotableViewMethod
2137    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
2138        final Context context = getContext();
2139        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2140                top != 0 ? context.getDrawable(top) : null,
2141                right != 0 ? context.getDrawable(right) : null,
2142                bottom != 0 ? context.getDrawable(bottom) : null);
2143    }
2144
2145    /**
2146     * Sets the Drawables (if any) to appear to the left of, above, to the
2147     * right of, and below the text. Use {@code null} if you do not want a
2148     * Drawable there. The Drawables' bounds will be set to their intrinsic
2149     * bounds.
2150     * <p>
2151     * Calling this method will overwrite any Drawables previously set using
2152     * {@link #setCompoundDrawablesRelative} or related methods.
2153     *
2154     * @attr ref android.R.styleable#TextView_drawableLeft
2155     * @attr ref android.R.styleable#TextView_drawableTop
2156     * @attr ref android.R.styleable#TextView_drawableRight
2157     * @attr ref android.R.styleable#TextView_drawableBottom
2158     */
2159    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2160            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2161
2162        if (left != null) {
2163            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2164        }
2165        if (right != null) {
2166            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2167        }
2168        if (top != null) {
2169            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2170        }
2171        if (bottom != null) {
2172            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2173        }
2174        setCompoundDrawables(left, top, right, bottom);
2175    }
2176
2177    /**
2178     * Sets the Drawables (if any) to appear to the start of, above, to the end
2179     * of, and below the text. Use {@code null} if you do not want a Drawable
2180     * there. The Drawables must already have had {@link Drawable#setBounds}
2181     * called.
2182     * <p>
2183     * Calling this method will overwrite any Drawables previously set using
2184     * {@link #setCompoundDrawables} or related methods.
2185     *
2186     * @attr ref android.R.styleable#TextView_drawableStart
2187     * @attr ref android.R.styleable#TextView_drawableTop
2188     * @attr ref android.R.styleable#TextView_drawableEnd
2189     * @attr ref android.R.styleable#TextView_drawableBottom
2190     */
2191    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2192            @Nullable Drawable end, @Nullable Drawable bottom) {
2193        Drawables dr = mDrawables;
2194
2195        // We're switching to relative, discard absolute.
2196        if (dr != null) {
2197            if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
2198            dr.mDrawableLeft = dr.mDrawableLeftInitial = null;
2199            if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
2200            dr.mDrawableRight = dr.mDrawableRightInitial = null;
2201            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2202            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2203        }
2204
2205        final boolean drawables = start != null || top != null
2206                || end != null || bottom != null;
2207
2208        if (!drawables) {
2209            // Clearing drawables...  can we free the data structure?
2210            if (dr != null) {
2211                if (dr.mDrawablePadding == 0) {
2212                    mDrawables = null;
2213                } else {
2214                    // We need to retain the last set padding, so just clear
2215                    // out all of the fields in the existing structure.
2216                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2217                    dr.mDrawableStart = null;
2218                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
2219                    dr.mDrawableTop = null;
2220                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2221                    dr.mDrawableEnd = null;
2222                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
2223                    dr.mDrawableBottom = null;
2224                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2225                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2226                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2227                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2228                }
2229            }
2230        } else {
2231            if (dr == null) {
2232                mDrawables = dr = new Drawables(getContext());
2233            }
2234
2235            mDrawables.mOverride = true;
2236
2237            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2238                dr.mDrawableStart.setCallback(null);
2239            }
2240            dr.mDrawableStart = start;
2241
2242            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2243                dr.mDrawableTop.setCallback(null);
2244            }
2245            dr.mDrawableTop = top;
2246
2247            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2248                dr.mDrawableEnd.setCallback(null);
2249            }
2250            dr.mDrawableEnd = end;
2251
2252            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2253                dr.mDrawableBottom.setCallback(null);
2254            }
2255            dr.mDrawableBottom = bottom;
2256
2257            final Rect compoundRect = dr.mCompoundRect;
2258            int[] state;
2259
2260            state = getDrawableState();
2261
2262            if (start != null) {
2263                start.setState(state);
2264                start.copyBounds(compoundRect);
2265                start.setCallback(this);
2266                dr.mDrawableSizeStart = compoundRect.width();
2267                dr.mDrawableHeightStart = compoundRect.height();
2268            } else {
2269                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2270            }
2271
2272            if (end != null) {
2273                end.setState(state);
2274                end.copyBounds(compoundRect);
2275                end.setCallback(this);
2276                dr.mDrawableSizeEnd = compoundRect.width();
2277                dr.mDrawableHeightEnd = compoundRect.height();
2278            } else {
2279                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2280            }
2281
2282            if (top != null) {
2283                top.setState(state);
2284                top.copyBounds(compoundRect);
2285                top.setCallback(this);
2286                dr.mDrawableSizeTop = compoundRect.height();
2287                dr.mDrawableWidthTop = compoundRect.width();
2288            } else {
2289                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2290            }
2291
2292            if (bottom != null) {
2293                bottom.setState(state);
2294                bottom.copyBounds(compoundRect);
2295                bottom.setCallback(this);
2296                dr.mDrawableSizeBottom = compoundRect.height();
2297                dr.mDrawableWidthBottom = compoundRect.width();
2298            } else {
2299                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2300            }
2301        }
2302
2303        resetResolvedDrawables();
2304        resolveDrawables();
2305        invalidate();
2306        requestLayout();
2307    }
2308
2309    /**
2310     * Sets the Drawables (if any) to appear to the start of, above, to the end
2311     * of, and below the text. Use 0 if you do not want a Drawable there. The
2312     * Drawables' bounds will be set to their intrinsic bounds.
2313     * <p>
2314     * Calling this method will overwrite any Drawables previously set using
2315     * {@link #setCompoundDrawables} or related methods.
2316     *
2317     * @param start Resource identifier of the start Drawable.
2318     * @param top Resource identifier of the top Drawable.
2319     * @param end Resource identifier of the end Drawable.
2320     * @param bottom Resource identifier of the bottom Drawable.
2321     *
2322     * @attr ref android.R.styleable#TextView_drawableStart
2323     * @attr ref android.R.styleable#TextView_drawableTop
2324     * @attr ref android.R.styleable#TextView_drawableEnd
2325     * @attr ref android.R.styleable#TextView_drawableBottom
2326     */
2327    @android.view.RemotableViewMethod
2328    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
2329            int bottom) {
2330        final Context context = getContext();
2331        setCompoundDrawablesRelativeWithIntrinsicBounds(
2332                start != 0 ? context.getDrawable(start) : null,
2333                top != 0 ? context.getDrawable(top) : null,
2334                end != 0 ? context.getDrawable(end) : null,
2335                bottom != 0 ? context.getDrawable(bottom) : null);
2336    }
2337
2338    /**
2339     * Sets the Drawables (if any) to appear to the start of, above, to the end
2340     * of, and below the text. Use {@code null} if you do not want a Drawable
2341     * there. The Drawables' bounds will be set to their intrinsic bounds.
2342     * <p>
2343     * Calling this method will overwrite any Drawables previously set using
2344     * {@link #setCompoundDrawables} or related methods.
2345     *
2346     * @attr ref android.R.styleable#TextView_drawableStart
2347     * @attr ref android.R.styleable#TextView_drawableTop
2348     * @attr ref android.R.styleable#TextView_drawableEnd
2349     * @attr ref android.R.styleable#TextView_drawableBottom
2350     */
2351    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2352            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2353
2354        if (start != null) {
2355            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2356        }
2357        if (end != null) {
2358            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2359        }
2360        if (top != null) {
2361            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2362        }
2363        if (bottom != null) {
2364            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2365        }
2366        setCompoundDrawablesRelative(start, top, end, bottom);
2367    }
2368
2369    /**
2370     * Returns drawables for the left, top, right, and bottom borders.
2371     *
2372     * @attr ref android.R.styleable#TextView_drawableLeft
2373     * @attr ref android.R.styleable#TextView_drawableTop
2374     * @attr ref android.R.styleable#TextView_drawableRight
2375     * @attr ref android.R.styleable#TextView_drawableBottom
2376     */
2377    @NonNull
2378    public Drawable[] getCompoundDrawables() {
2379        final Drawables dr = mDrawables;
2380        if (dr != null) {
2381            return new Drawable[] {
2382                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2383            };
2384        } else {
2385            return new Drawable[] { null, null, null, null };
2386        }
2387    }
2388
2389    /**
2390     * Returns drawables for the start, top, end, and bottom borders.
2391     *
2392     * @attr ref android.R.styleable#TextView_drawableStart
2393     * @attr ref android.R.styleable#TextView_drawableTop
2394     * @attr ref android.R.styleable#TextView_drawableEnd
2395     * @attr ref android.R.styleable#TextView_drawableBottom
2396     */
2397    @NonNull
2398    public Drawable[] getCompoundDrawablesRelative() {
2399        final Drawables dr = mDrawables;
2400        if (dr != null) {
2401            return new Drawable[] {
2402                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2403            };
2404        } else {
2405            return new Drawable[] { null, null, null, null };
2406        }
2407    }
2408
2409    /**
2410     * Sets the size of the padding between the compound drawables and
2411     * the text.
2412     *
2413     * @attr ref android.R.styleable#TextView_drawablePadding
2414     */
2415    @android.view.RemotableViewMethod
2416    public void setCompoundDrawablePadding(int pad) {
2417        Drawables dr = mDrawables;
2418        if (pad == 0) {
2419            if (dr != null) {
2420                dr.mDrawablePadding = pad;
2421            }
2422        } else {
2423            if (dr == null) {
2424                mDrawables = dr = new Drawables(getContext());
2425            }
2426            dr.mDrawablePadding = pad;
2427        }
2428
2429        invalidate();
2430        requestLayout();
2431    }
2432
2433    /**
2434     * Returns the padding between the compound drawables and the text.
2435     *
2436     * @attr ref android.R.styleable#TextView_drawablePadding
2437     */
2438    public int getCompoundDrawablePadding() {
2439        final Drawables dr = mDrawables;
2440        return dr != null ? dr.mDrawablePadding : 0;
2441    }
2442
2443    @Override
2444    public void setPadding(int left, int top, int right, int bottom) {
2445        if (left != mPaddingLeft ||
2446            right != mPaddingRight ||
2447            top != mPaddingTop ||
2448            bottom != mPaddingBottom) {
2449            nullLayouts();
2450        }
2451
2452        // the super call will requestLayout()
2453        super.setPadding(left, top, right, bottom);
2454        invalidate();
2455    }
2456
2457    @Override
2458    public void setPaddingRelative(int start, int top, int end, int bottom) {
2459        if (start != getPaddingStart() ||
2460            end != getPaddingEnd() ||
2461            top != mPaddingTop ||
2462            bottom != mPaddingBottom) {
2463            nullLayouts();
2464        }
2465
2466        // the super call will requestLayout()
2467        super.setPaddingRelative(start, top, end, bottom);
2468        invalidate();
2469    }
2470
2471    /**
2472     * Gets the autolink mask of the text.  See {@link
2473     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2474     * possible values.
2475     *
2476     * @attr ref android.R.styleable#TextView_autoLink
2477     */
2478    public final int getAutoLinkMask() {
2479        return mAutoLinkMask;
2480    }
2481
2482    /**
2483     * Sets the text color, size, style, hint color, and highlight color
2484     * from the specified TextAppearance resource.
2485     */
2486    public void setTextAppearance(Context context, int resid) {
2487        TypedArray appearance =
2488            context.obtainStyledAttributes(resid,
2489                                           com.android.internal.R.styleable.TextAppearance);
2490
2491        int color;
2492        ColorStateList colors;
2493        int ts;
2494
2495        color = appearance.getColor(
2496                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2497        if (color != 0) {
2498            setHighlightColor(color);
2499        }
2500
2501        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2502                                              TextAppearance_textColor);
2503        if (colors != null) {
2504            setTextColor(colors);
2505        }
2506
2507        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2508                                              TextAppearance_textSize, 0);
2509        if (ts != 0) {
2510            setRawTextSize(ts);
2511        }
2512
2513        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2514                                              TextAppearance_textColorHint);
2515        if (colors != null) {
2516            setHintTextColor(colors);
2517        }
2518
2519        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2520                                              TextAppearance_textColorLink);
2521        if (colors != null) {
2522            setLinkTextColor(colors);
2523        }
2524
2525        String familyName;
2526        int typefaceIndex, styleIndex;
2527
2528        familyName = appearance.getString(com.android.internal.R.styleable.
2529                                          TextAppearance_fontFamily);
2530        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2531                                          TextAppearance_typeface, -1);
2532        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2533                                       TextAppearance_textStyle, -1);
2534
2535        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2536
2537        final int shadowcolor = appearance.getInt(
2538                com.android.internal.R.styleable.TextAppearance_shadowColor, 0);
2539        if (shadowcolor != 0) {
2540            final float dx = appearance.getFloat(
2541                    com.android.internal.R.styleable.TextAppearance_shadowDx, 0);
2542            final float dy = appearance.getFloat(
2543                    com.android.internal.R.styleable.TextAppearance_shadowDy, 0);
2544            final float r = appearance.getFloat(
2545                    com.android.internal.R.styleable.TextAppearance_shadowRadius, 0);
2546
2547            setShadowLayer(r, dx, dy, shadowcolor);
2548        }
2549
2550        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2551                false)) {
2552            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2553        }
2554
2555        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_elegantTextHeight)) {
2556            setElegantTextHeight(appearance.getBoolean(
2557                com.android.internal.R.styleable.TextAppearance_elegantTextHeight, false));
2558        }
2559
2560        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_letterSpacing)) {
2561            setLetterSpacing(appearance.getFloat(
2562                com.android.internal.R.styleable.TextAppearance_letterSpacing, 0));
2563        }
2564
2565        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_fontFeatureSettings)) {
2566            setFontFeatureSettings(appearance.getString(
2567                com.android.internal.R.styleable.TextAppearance_fontFeatureSettings));
2568        }
2569
2570        appearance.recycle();
2571    }
2572
2573    /**
2574     * Get the default {@link Locale} of the text in this TextView.
2575     * @return the default {@link Locale} of the text in this TextView.
2576     */
2577    public Locale getTextLocale() {
2578        return mTextPaint.getTextLocale();
2579    }
2580
2581    /**
2582     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2583     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2584     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2585     *
2586     * @param locale the {@link Locale} for drawing text, must not be null.
2587     *
2588     * @see Paint#setTextLocale
2589     */
2590    public void setTextLocale(Locale locale) {
2591        mTextPaint.setTextLocale(locale);
2592    }
2593
2594    /**
2595     * @return the size (in pixels) of the default text size in this TextView.
2596     */
2597    @ViewDebug.ExportedProperty(category = "text")
2598    public float getTextSize() {
2599        return mTextPaint.getTextSize();
2600    }
2601
2602    /**
2603     * @return the size (in scaled pixels) of thee default text size in this TextView.
2604     * @hide
2605     */
2606    @ViewDebug.ExportedProperty(category = "text")
2607    public float getScaledTextSize() {
2608        return mTextPaint.getTextSize() / mTextPaint.density;
2609    }
2610
2611    /** @hide */
2612    @ViewDebug.ExportedProperty(category = "text", mapping = {
2613            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2614            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2615            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2616            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2617    })
2618    public int getTypefaceStyle() {
2619        return mTextPaint.getTypeface().getStyle();
2620    }
2621
2622    /**
2623     * Set the default text size to the given value, interpreted as "scaled
2624     * pixel" units.  This size is adjusted based on the current density and
2625     * user font size preference.
2626     *
2627     * @param size The scaled pixel size.
2628     *
2629     * @attr ref android.R.styleable#TextView_textSize
2630     */
2631    @android.view.RemotableViewMethod
2632    public void setTextSize(float size) {
2633        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2634    }
2635
2636    /**
2637     * Set the default text size to a given unit and value.  See {@link
2638     * TypedValue} for the possible dimension units.
2639     *
2640     * @param unit The desired dimension unit.
2641     * @param size The desired size in the given units.
2642     *
2643     * @attr ref android.R.styleable#TextView_textSize
2644     */
2645    public void setTextSize(int unit, float size) {
2646        Context c = getContext();
2647        Resources r;
2648
2649        if (c == null)
2650            r = Resources.getSystem();
2651        else
2652            r = c.getResources();
2653
2654        setRawTextSize(TypedValue.applyDimension(
2655                unit, size, r.getDisplayMetrics()));
2656    }
2657
2658    private void setRawTextSize(float size) {
2659        if (size != mTextPaint.getTextSize()) {
2660            mTextPaint.setTextSize(size);
2661
2662            if (mLayout != null) {
2663                nullLayouts();
2664                requestLayout();
2665                invalidate();
2666            }
2667        }
2668    }
2669
2670    /**
2671     * @return the extent by which text is currently being stretched
2672     * horizontally.  This will usually be 1.
2673     */
2674    public float getTextScaleX() {
2675        return mTextPaint.getTextScaleX();
2676    }
2677
2678    /**
2679     * Sets the extent by which text should be stretched horizontally.
2680     *
2681     * @attr ref android.R.styleable#TextView_textScaleX
2682     */
2683    @android.view.RemotableViewMethod
2684    public void setTextScaleX(float size) {
2685        if (size != mTextPaint.getTextScaleX()) {
2686            mUserSetTextScaleX = true;
2687            mTextPaint.setTextScaleX(size);
2688
2689            if (mLayout != null) {
2690                nullLayouts();
2691                requestLayout();
2692                invalidate();
2693            }
2694        }
2695    }
2696
2697    /**
2698     * Sets the typeface and style in which the text should be displayed.
2699     * Note that not all Typeface families actually have bold and italic
2700     * variants, so you may need to use
2701     * {@link #setTypeface(Typeface, int)} to get the appearance
2702     * that you actually want.
2703     *
2704     * @see #getTypeface()
2705     *
2706     * @attr ref android.R.styleable#TextView_fontFamily
2707     * @attr ref android.R.styleable#TextView_typeface
2708     * @attr ref android.R.styleable#TextView_textStyle
2709     */
2710    public void setTypeface(Typeface tf) {
2711        if (mTextPaint.getTypeface() != tf) {
2712            mTextPaint.setTypeface(tf);
2713
2714            if (mLayout != null) {
2715                nullLayouts();
2716                requestLayout();
2717                invalidate();
2718            }
2719        }
2720    }
2721
2722    /**
2723     * @return the current typeface and style in which the text is being
2724     * displayed.
2725     *
2726     * @see #setTypeface(Typeface)
2727     *
2728     * @attr ref android.R.styleable#TextView_fontFamily
2729     * @attr ref android.R.styleable#TextView_typeface
2730     * @attr ref android.R.styleable#TextView_textStyle
2731     */
2732    public Typeface getTypeface() {
2733        return mTextPaint.getTypeface();
2734    }
2735
2736    /**
2737     * Set the TextView's elegant height metrics flag. This setting selects font
2738     * variants that have not been compacted to fit Latin-based vertical
2739     * metrics, and also increases top and bottom bounds to provide more space.
2740     *
2741     * @param elegant set the paint's elegant metrics flag.
2742     *
2743     * @attr ref android.R.styleable#TextView_elegantTextHeight
2744     */
2745    public void setElegantTextHeight(boolean elegant) {
2746        mTextPaint.setElegantTextHeight(elegant);
2747    }
2748
2749    /**
2750     * @return the extent by which text is currently being letter-spaced.
2751     * This will normally be 0.
2752     *
2753     * @see #setLetterSpacing(float)
2754     * @see Paint#setLetterSpacing
2755     */
2756    public float getLetterSpacing() {
2757        return mTextPaint.getLetterSpacing();
2758    }
2759
2760    /**
2761     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
2762     * for slight expansion will be around 0.05.  Negative values tighten text.
2763     *
2764     * @see #getLetterSpacing()
2765     * @see Paint#getLetterSpacing
2766     *
2767     * @attr ref android.R.styleable#TextView_letterSpacing
2768     */
2769    @android.view.RemotableViewMethod
2770    public void setLetterSpacing(float letterSpacing) {
2771        if (letterSpacing != mTextPaint.getLetterSpacing()) {
2772            mTextPaint.setLetterSpacing(letterSpacing);
2773
2774            if (mLayout != null) {
2775                nullLayouts();
2776                requestLayout();
2777                invalidate();
2778            }
2779        }
2780    }
2781
2782    /**
2783     * @return the currently set font feature settings.  Default is null.
2784     *
2785     * @see #setFontFeatureSettings(String)
2786     * @see Paint#setFontFeatureSettings
2787     */
2788    @Nullable
2789    public String getFontFeatureSettings() {
2790        return mTextPaint.getFontFeatureSettings();
2791    }
2792
2793    /**
2794     * Sets font feature settings.  The format is the same as the CSS
2795     * font-feature-settings attribute:
2796     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
2797     *
2798     * @param fontFeatureSettings font feature settings represented as CSS compatible string
2799     * @see #getFontFeatureSettings()
2800     * @see Paint#getFontFeatureSettings
2801     *
2802     * @attr ref android.R.styleable#TextView_fontFeatureSettings
2803     */
2804    @android.view.RemotableViewMethod
2805    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
2806        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
2807            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
2808
2809            if (mLayout != null) {
2810                nullLayouts();
2811                requestLayout();
2812                invalidate();
2813            }
2814        }
2815    }
2816
2817
2818    /**
2819     * Sets the text color for all the states (normal, selected,
2820     * focused) to be this color.
2821     *
2822     * @see #setTextColor(ColorStateList)
2823     * @see #getTextColors()
2824     *
2825     * @attr ref android.R.styleable#TextView_textColor
2826     */
2827    @android.view.RemotableViewMethod
2828    public void setTextColor(int color) {
2829        mTextColor = ColorStateList.valueOf(color);
2830        updateTextColors();
2831    }
2832
2833    /**
2834     * Sets the text color.
2835     *
2836     * @see #setTextColor(int)
2837     * @see #getTextColors()
2838     * @see #setHintTextColor(ColorStateList)
2839     * @see #setLinkTextColor(ColorStateList)
2840     *
2841     * @attr ref android.R.styleable#TextView_textColor
2842     */
2843    public void setTextColor(ColorStateList colors) {
2844        if (colors == null) {
2845            throw new NullPointerException();
2846        }
2847
2848        mTextColor = colors;
2849        updateTextColors();
2850    }
2851
2852    /**
2853     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2854     *
2855     * @see #setTextColor(ColorStateList)
2856     * @see #setTextColor(int)
2857     *
2858     * @attr ref android.R.styleable#TextView_textColor
2859     */
2860    public final ColorStateList getTextColors() {
2861        return mTextColor;
2862    }
2863
2864    /**
2865     * <p>Return the current color selected for normal text.</p>
2866     *
2867     * @return Returns the current text color.
2868     */
2869    public final int getCurrentTextColor() {
2870        return mCurTextColor;
2871    }
2872
2873    /**
2874     * Sets the color used to display the selection highlight.
2875     *
2876     * @attr ref android.R.styleable#TextView_textColorHighlight
2877     */
2878    @android.view.RemotableViewMethod
2879    public void setHighlightColor(int color) {
2880        if (mHighlightColor != color) {
2881            mHighlightColor = color;
2882            invalidate();
2883        }
2884    }
2885
2886    /**
2887     * @return the color used to display the selection highlight
2888     *
2889     * @see #setHighlightColor(int)
2890     *
2891     * @attr ref android.R.styleable#TextView_textColorHighlight
2892     */
2893    public int getHighlightColor() {
2894        return mHighlightColor;
2895    }
2896
2897    /**
2898     * Sets whether the soft input method will be made visible when this
2899     * TextView gets focused. The default is true.
2900     */
2901    @android.view.RemotableViewMethod
2902    public final void setShowSoftInputOnFocus(boolean show) {
2903        createEditorIfNeeded();
2904        mEditor.mShowSoftInputOnFocus = show;
2905    }
2906
2907    /**
2908     * Returns whether the soft input method will be made visible when this
2909     * TextView gets focused. The default is true.
2910     */
2911    public final boolean getShowSoftInputOnFocus() {
2912        // When there is no Editor, return default true value
2913        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2914    }
2915
2916    /**
2917     * Gives the text a shadow of the specified blur radius and color, the specified
2918     * distance from its drawn position.
2919     * <p>
2920     * The text shadow produced does not interact with the properties on view
2921     * that are responsible for real time shadows,
2922     * {@link View#getElevation() elevation} and
2923     * {@link View#getTranslationZ() translationZ}.
2924     *
2925     * @see Paint#setShadowLayer(float, float, float, int)
2926     *
2927     * @attr ref android.R.styleable#TextView_shadowColor
2928     * @attr ref android.R.styleable#TextView_shadowDx
2929     * @attr ref android.R.styleable#TextView_shadowDy
2930     * @attr ref android.R.styleable#TextView_shadowRadius
2931     */
2932    public void setShadowLayer(float radius, float dx, float dy, int color) {
2933        mTextPaint.setShadowLayer(radius, dx, dy, color);
2934
2935        mShadowRadius = radius;
2936        mShadowDx = dx;
2937        mShadowDy = dy;
2938        mShadowColor = color;
2939
2940        // Will change text clip region
2941        if (mEditor != null) mEditor.invalidateTextDisplayList();
2942        invalidate();
2943    }
2944
2945    /**
2946     * Gets the radius of the shadow layer.
2947     *
2948     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2949     *
2950     * @see #setShadowLayer(float, float, float, int)
2951     *
2952     * @attr ref android.R.styleable#TextView_shadowRadius
2953     */
2954    public float getShadowRadius() {
2955        return mShadowRadius;
2956    }
2957
2958    /**
2959     * @return the horizontal offset of the shadow layer
2960     *
2961     * @see #setShadowLayer(float, float, float, int)
2962     *
2963     * @attr ref android.R.styleable#TextView_shadowDx
2964     */
2965    public float getShadowDx() {
2966        return mShadowDx;
2967    }
2968
2969    /**
2970     * @return the vertical offset of the shadow layer
2971     *
2972     * @see #setShadowLayer(float, float, float, int)
2973     *
2974     * @attr ref android.R.styleable#TextView_shadowDy
2975     */
2976    public float getShadowDy() {
2977        return mShadowDy;
2978    }
2979
2980    /**
2981     * @return the color of the shadow layer
2982     *
2983     * @see #setShadowLayer(float, float, float, int)
2984     *
2985     * @attr ref android.R.styleable#TextView_shadowColor
2986     */
2987    public int getShadowColor() {
2988        return mShadowColor;
2989    }
2990
2991    /**
2992     * @return the base paint used for the text.  Please use this only to
2993     * consult the Paint's properties and not to change them.
2994     */
2995    public TextPaint getPaint() {
2996        return mTextPaint;
2997    }
2998
2999    /**
3000     * Sets the autolink mask of the text.  See {@link
3001     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3002     * possible values.
3003     *
3004     * @attr ref android.R.styleable#TextView_autoLink
3005     */
3006    @android.view.RemotableViewMethod
3007    public final void setAutoLinkMask(int mask) {
3008        mAutoLinkMask = mask;
3009    }
3010
3011    /**
3012     * Sets whether the movement method will automatically be set to
3013     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3014     * set to nonzero and links are detected in {@link #setText}.
3015     * The default is true.
3016     *
3017     * @attr ref android.R.styleable#TextView_linksClickable
3018     */
3019    @android.view.RemotableViewMethod
3020    public final void setLinksClickable(boolean whether) {
3021        mLinksClickable = whether;
3022    }
3023
3024    /**
3025     * Returns whether the movement method will automatically be set to
3026     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3027     * set to nonzero and links are detected in {@link #setText}.
3028     * The default is true.
3029     *
3030     * @attr ref android.R.styleable#TextView_linksClickable
3031     */
3032    public final boolean getLinksClickable() {
3033        return mLinksClickable;
3034    }
3035
3036    /**
3037     * Returns the list of URLSpans attached to the text
3038     * (by {@link Linkify} or otherwise) if any.  You can call
3039     * {@link URLSpan#getURL} on them to find where they link to
3040     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3041     * to find the region of the text they are attached to.
3042     */
3043    public URLSpan[] getUrls() {
3044        if (mText instanceof Spanned) {
3045            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3046        } else {
3047            return new URLSpan[0];
3048        }
3049    }
3050
3051    /**
3052     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3053     * TextView.
3054     *
3055     * @see #setHintTextColor(ColorStateList)
3056     * @see #getHintTextColors()
3057     * @see #setTextColor(int)
3058     *
3059     * @attr ref android.R.styleable#TextView_textColorHint
3060     */
3061    @android.view.RemotableViewMethod
3062    public final void setHintTextColor(int color) {
3063        mHintTextColor = ColorStateList.valueOf(color);
3064        updateTextColors();
3065    }
3066
3067    /**
3068     * Sets the color of the hint text.
3069     *
3070     * @see #getHintTextColors()
3071     * @see #setHintTextColor(int)
3072     * @see #setTextColor(ColorStateList)
3073     * @see #setLinkTextColor(ColorStateList)
3074     *
3075     * @attr ref android.R.styleable#TextView_textColorHint
3076     */
3077    public final void setHintTextColor(ColorStateList colors) {
3078        mHintTextColor = colors;
3079        updateTextColors();
3080    }
3081
3082    /**
3083     * @return the color of the hint text, for the different states of this TextView.
3084     *
3085     * @see #setHintTextColor(ColorStateList)
3086     * @see #setHintTextColor(int)
3087     * @see #setTextColor(ColorStateList)
3088     * @see #setLinkTextColor(ColorStateList)
3089     *
3090     * @attr ref android.R.styleable#TextView_textColorHint
3091     */
3092    public final ColorStateList getHintTextColors() {
3093        return mHintTextColor;
3094    }
3095
3096    /**
3097     * <p>Return the current color selected to paint the hint text.</p>
3098     *
3099     * @return Returns the current hint text color.
3100     */
3101    public final int getCurrentHintTextColor() {
3102        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3103    }
3104
3105    /**
3106     * Sets the color of links in the text.
3107     *
3108     * @see #setLinkTextColor(ColorStateList)
3109     * @see #getLinkTextColors()
3110     *
3111     * @attr ref android.R.styleable#TextView_textColorLink
3112     */
3113    @android.view.RemotableViewMethod
3114    public final void setLinkTextColor(int color) {
3115        mLinkTextColor = ColorStateList.valueOf(color);
3116        updateTextColors();
3117    }
3118
3119    /**
3120     * Sets the color of links in the text.
3121     *
3122     * @see #setLinkTextColor(int)
3123     * @see #getLinkTextColors()
3124     * @see #setTextColor(ColorStateList)
3125     * @see #setHintTextColor(ColorStateList)
3126     *
3127     * @attr ref android.R.styleable#TextView_textColorLink
3128     */
3129    public final void setLinkTextColor(ColorStateList colors) {
3130        mLinkTextColor = colors;
3131        updateTextColors();
3132    }
3133
3134    /**
3135     * @return the list of colors used to paint the links in the text, for the different states of
3136     * this TextView
3137     *
3138     * @see #setLinkTextColor(ColorStateList)
3139     * @see #setLinkTextColor(int)
3140     *
3141     * @attr ref android.R.styleable#TextView_textColorLink
3142     */
3143    public final ColorStateList getLinkTextColors() {
3144        return mLinkTextColor;
3145    }
3146
3147    /**
3148     * Sets the horizontal alignment of the text and the
3149     * vertical gravity that will be used when there is extra space
3150     * in the TextView beyond what is required for the text itself.
3151     *
3152     * @see android.view.Gravity
3153     * @attr ref android.R.styleable#TextView_gravity
3154     */
3155    public void setGravity(int gravity) {
3156        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3157            gravity |= Gravity.START;
3158        }
3159        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3160            gravity |= Gravity.TOP;
3161        }
3162
3163        boolean newLayout = false;
3164
3165        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3166            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3167            newLayout = true;
3168        }
3169
3170        if (gravity != mGravity) {
3171            invalidate();
3172        }
3173
3174        mGravity = gravity;
3175
3176        if (mLayout != null && newLayout) {
3177            // XXX this is heavy-handed because no actual content changes.
3178            int want = mLayout.getWidth();
3179            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3180
3181            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3182                          mRight - mLeft - getCompoundPaddingLeft() -
3183                          getCompoundPaddingRight(), true);
3184        }
3185    }
3186
3187    /**
3188     * Returns the horizontal and vertical alignment of this TextView.
3189     *
3190     * @see android.view.Gravity
3191     * @attr ref android.R.styleable#TextView_gravity
3192     */
3193    public int getGravity() {
3194        return mGravity;
3195    }
3196
3197    /**
3198     * @return the flags on the Paint being used to display the text.
3199     * @see Paint#getFlags
3200     */
3201    public int getPaintFlags() {
3202        return mTextPaint.getFlags();
3203    }
3204
3205    /**
3206     * Sets flags on the Paint being used to display the text and
3207     * reflows the text if they are different from the old flags.
3208     * @see Paint#setFlags
3209     */
3210    @android.view.RemotableViewMethod
3211    public void setPaintFlags(int flags) {
3212        if (mTextPaint.getFlags() != flags) {
3213            mTextPaint.setFlags(flags);
3214
3215            if (mLayout != null) {
3216                nullLayouts();
3217                requestLayout();
3218                invalidate();
3219            }
3220        }
3221    }
3222
3223    /**
3224     * Sets whether the text should be allowed to be wider than the
3225     * View is.  If false, it will be wrapped to the width of the View.
3226     *
3227     * @attr ref android.R.styleable#TextView_scrollHorizontally
3228     */
3229    public void setHorizontallyScrolling(boolean whether) {
3230        if (mHorizontallyScrolling != whether) {
3231            mHorizontallyScrolling = whether;
3232
3233            if (mLayout != null) {
3234                nullLayouts();
3235                requestLayout();
3236                invalidate();
3237            }
3238        }
3239    }
3240
3241    /**
3242     * Returns whether the text is allowed to be wider than the View is.
3243     * If false, the text will be wrapped to the width of the View.
3244     *
3245     * @attr ref android.R.styleable#TextView_scrollHorizontally
3246     * @hide
3247     */
3248    public boolean getHorizontallyScrolling() {
3249        return mHorizontallyScrolling;
3250    }
3251
3252    /**
3253     * Makes the TextView at least this many lines tall.
3254     *
3255     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3256     * set this value to 1.
3257     *
3258     * @see #getMinLines()
3259     *
3260     * @attr ref android.R.styleable#TextView_minLines
3261     */
3262    @android.view.RemotableViewMethod
3263    public void setMinLines(int minlines) {
3264        mMinimum = minlines;
3265        mMinMode = LINES;
3266
3267        requestLayout();
3268        invalidate();
3269    }
3270
3271    /**
3272     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3273     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3274     *
3275     * @see #setMinLines(int)
3276     *
3277     * @attr ref android.R.styleable#TextView_minLines
3278     */
3279    public int getMinLines() {
3280        return mMinMode == LINES ? mMinimum : -1;
3281    }
3282
3283    /**
3284     * Makes the TextView at least this many pixels tall.
3285     *
3286     * Setting this value overrides any other (minimum) number of lines setting.
3287     *
3288     * @attr ref android.R.styleable#TextView_minHeight
3289     */
3290    @android.view.RemotableViewMethod
3291    public void setMinHeight(int minHeight) {
3292        mMinimum = minHeight;
3293        mMinMode = PIXELS;
3294
3295        requestLayout();
3296        invalidate();
3297    }
3298
3299    /**
3300     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3301     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3302     *
3303     * @see #setMinHeight(int)
3304     *
3305     * @attr ref android.R.styleable#TextView_minHeight
3306     */
3307    public int getMinHeight() {
3308        return mMinMode == PIXELS ? mMinimum : -1;
3309    }
3310
3311    /**
3312     * Makes the TextView at most this many lines tall.
3313     *
3314     * Setting this value overrides any other (maximum) height setting.
3315     *
3316     * @attr ref android.R.styleable#TextView_maxLines
3317     */
3318    @android.view.RemotableViewMethod
3319    public void setMaxLines(int maxlines) {
3320        mMaximum = maxlines;
3321        mMaxMode = LINES;
3322
3323        requestLayout();
3324        invalidate();
3325    }
3326
3327    /**
3328     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3329     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3330     *
3331     * @see #setMaxLines(int)
3332     *
3333     * @attr ref android.R.styleable#TextView_maxLines
3334     */
3335    public int getMaxLines() {
3336        return mMaxMode == LINES ? mMaximum : -1;
3337    }
3338
3339    /**
3340     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3341     * {@link #setMaxLines(int)} method.
3342     *
3343     * Setting this value overrides any other (maximum) number of lines setting.
3344     *
3345     * @attr ref android.R.styleable#TextView_maxHeight
3346     */
3347    @android.view.RemotableViewMethod
3348    public void setMaxHeight(int maxHeight) {
3349        mMaximum = maxHeight;
3350        mMaxMode = PIXELS;
3351
3352        requestLayout();
3353        invalidate();
3354    }
3355
3356    /**
3357     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3358     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3359     *
3360     * @see #setMaxHeight(int)
3361     *
3362     * @attr ref android.R.styleable#TextView_maxHeight
3363     */
3364    public int getMaxHeight() {
3365        return mMaxMode == PIXELS ? mMaximum : -1;
3366    }
3367
3368    /**
3369     * Makes the TextView exactly this many lines tall.
3370     *
3371     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3372     * height setting. A single line TextView will set this value to 1.
3373     *
3374     * @attr ref android.R.styleable#TextView_lines
3375     */
3376    @android.view.RemotableViewMethod
3377    public void setLines(int lines) {
3378        mMaximum = mMinimum = lines;
3379        mMaxMode = mMinMode = LINES;
3380
3381        requestLayout();
3382        invalidate();
3383    }
3384
3385    /**
3386     * Makes the TextView exactly this many pixels tall.
3387     * You could do the same thing by specifying this number in the
3388     * LayoutParams.
3389     *
3390     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3391     * height setting.
3392     *
3393     * @attr ref android.R.styleable#TextView_height
3394     */
3395    @android.view.RemotableViewMethod
3396    public void setHeight(int pixels) {
3397        mMaximum = mMinimum = pixels;
3398        mMaxMode = mMinMode = PIXELS;
3399
3400        requestLayout();
3401        invalidate();
3402    }
3403
3404    /**
3405     * Makes the TextView at least this many ems wide
3406     *
3407     * @attr ref android.R.styleable#TextView_minEms
3408     */
3409    @android.view.RemotableViewMethod
3410    public void setMinEms(int minems) {
3411        mMinWidth = minems;
3412        mMinWidthMode = EMS;
3413
3414        requestLayout();
3415        invalidate();
3416    }
3417
3418    /**
3419     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3420     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3421     *
3422     * @see #setMinEms(int)
3423     * @see #setEms(int)
3424     *
3425     * @attr ref android.R.styleable#TextView_minEms
3426     */
3427    public int getMinEms() {
3428        return mMinWidthMode == EMS ? mMinWidth : -1;
3429    }
3430
3431    /**
3432     * Makes the TextView at least this many pixels wide
3433     *
3434     * @attr ref android.R.styleable#TextView_minWidth
3435     */
3436    @android.view.RemotableViewMethod
3437    public void setMinWidth(int minpixels) {
3438        mMinWidth = minpixels;
3439        mMinWidthMode = PIXELS;
3440
3441        requestLayout();
3442        invalidate();
3443    }
3444
3445    /**
3446     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3447     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3448     *
3449     * @see #setMinWidth(int)
3450     * @see #setWidth(int)
3451     *
3452     * @attr ref android.R.styleable#TextView_minWidth
3453     */
3454    public int getMinWidth() {
3455        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3456    }
3457
3458    /**
3459     * Makes the TextView at most this many ems wide
3460     *
3461     * @attr ref android.R.styleable#TextView_maxEms
3462     */
3463    @android.view.RemotableViewMethod
3464    public void setMaxEms(int maxems) {
3465        mMaxWidth = maxems;
3466        mMaxWidthMode = EMS;
3467
3468        requestLayout();
3469        invalidate();
3470    }
3471
3472    /**
3473     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3474     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3475     *
3476     * @see #setMaxEms(int)
3477     * @see #setEms(int)
3478     *
3479     * @attr ref android.R.styleable#TextView_maxEms
3480     */
3481    public int getMaxEms() {
3482        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3483    }
3484
3485    /**
3486     * Makes the TextView at most this many pixels wide
3487     *
3488     * @attr ref android.R.styleable#TextView_maxWidth
3489     */
3490    @android.view.RemotableViewMethod
3491    public void setMaxWidth(int maxpixels) {
3492        mMaxWidth = maxpixels;
3493        mMaxWidthMode = PIXELS;
3494
3495        requestLayout();
3496        invalidate();
3497    }
3498
3499    /**
3500     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3501     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3502     *
3503     * @see #setMaxWidth(int)
3504     * @see #setWidth(int)
3505     *
3506     * @attr ref android.R.styleable#TextView_maxWidth
3507     */
3508    public int getMaxWidth() {
3509        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3510    }
3511
3512    /**
3513     * Makes the TextView exactly this many ems wide
3514     *
3515     * @see #setMaxEms(int)
3516     * @see #setMinEms(int)
3517     * @see #getMinEms()
3518     * @see #getMaxEms()
3519     *
3520     * @attr ref android.R.styleable#TextView_ems
3521     */
3522    @android.view.RemotableViewMethod
3523    public void setEms(int ems) {
3524        mMaxWidth = mMinWidth = ems;
3525        mMaxWidthMode = mMinWidthMode = EMS;
3526
3527        requestLayout();
3528        invalidate();
3529    }
3530
3531    /**
3532     * Makes the TextView exactly this many pixels wide.
3533     * You could do the same thing by specifying this number in the
3534     * LayoutParams.
3535     *
3536     * @see #setMaxWidth(int)
3537     * @see #setMinWidth(int)
3538     * @see #getMinWidth()
3539     * @see #getMaxWidth()
3540     *
3541     * @attr ref android.R.styleable#TextView_width
3542     */
3543    @android.view.RemotableViewMethod
3544    public void setWidth(int pixels) {
3545        mMaxWidth = mMinWidth = pixels;
3546        mMaxWidthMode = mMinWidthMode = PIXELS;
3547
3548        requestLayout();
3549        invalidate();
3550    }
3551
3552    /**
3553     * Sets line spacing for this TextView.  Each line will have its height
3554     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3555     *
3556     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3557     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3558     */
3559    public void setLineSpacing(float add, float mult) {
3560        if (mSpacingAdd != add || mSpacingMult != mult) {
3561            mSpacingAdd = add;
3562            mSpacingMult = mult;
3563
3564            if (mLayout != null) {
3565                nullLayouts();
3566                requestLayout();
3567                invalidate();
3568            }
3569        }
3570    }
3571
3572    /**
3573     * Gets the line spacing multiplier
3574     *
3575     * @return the value by which each line's height is multiplied to get its actual height.
3576     *
3577     * @see #setLineSpacing(float, float)
3578     * @see #getLineSpacingExtra()
3579     *
3580     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3581     */
3582    public float getLineSpacingMultiplier() {
3583        return mSpacingMult;
3584    }
3585
3586    /**
3587     * Gets the line spacing extra space
3588     *
3589     * @return the extra space that is added to the height of each lines of this TextView.
3590     *
3591     * @see #setLineSpacing(float, float)
3592     * @see #getLineSpacingMultiplier()
3593     *
3594     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3595     */
3596    public float getLineSpacingExtra() {
3597        return mSpacingAdd;
3598    }
3599
3600    /**
3601     * Convenience method: Append the specified text to the TextView's
3602     * display buffer, upgrading it to BufferType.EDITABLE if it was
3603     * not already editable.
3604     */
3605    public final void append(CharSequence text) {
3606        append(text, 0, text.length());
3607    }
3608
3609    /**
3610     * Convenience method: Append the specified text slice to the TextView's
3611     * display buffer, upgrading it to BufferType.EDITABLE if it was
3612     * not already editable.
3613     */
3614    public void append(CharSequence text, int start, int end) {
3615        if (!(mText instanceof Editable)) {
3616            setText(mText, BufferType.EDITABLE);
3617        }
3618
3619        ((Editable) mText).append(text, start, end);
3620    }
3621
3622    private void updateTextColors() {
3623        boolean inval = false;
3624        int color = mTextColor.getColorForState(getDrawableState(), 0);
3625        if (color != mCurTextColor) {
3626            mCurTextColor = color;
3627            inval = true;
3628        }
3629        if (mLinkTextColor != null) {
3630            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3631            if (color != mTextPaint.linkColor) {
3632                mTextPaint.linkColor = color;
3633                inval = true;
3634            }
3635        }
3636        if (mHintTextColor != null) {
3637            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3638            if (color != mCurHintTextColor) {
3639                mCurHintTextColor = color;
3640                if (mText.length() == 0) {
3641                    inval = true;
3642                }
3643            }
3644        }
3645        if (inval) {
3646            // Text needs to be redrawn with the new color
3647            if (mEditor != null) mEditor.invalidateTextDisplayList();
3648            invalidate();
3649        }
3650    }
3651
3652    @Override
3653    protected void drawableStateChanged() {
3654        super.drawableStateChanged();
3655        if (mTextColor != null && mTextColor.isStateful()
3656                || (mHintTextColor != null && mHintTextColor.isStateful())
3657                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3658            updateTextColors();
3659        }
3660
3661        final Drawables dr = mDrawables;
3662        if (dr != null) {
3663            int[] state = getDrawableState();
3664            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3665                dr.mDrawableTop.setState(state);
3666            }
3667            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3668                dr.mDrawableBottom.setState(state);
3669            }
3670            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3671                dr.mDrawableLeft.setState(state);
3672            }
3673            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3674                dr.mDrawableRight.setState(state);
3675            }
3676            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3677                dr.mDrawableStart.setState(state);
3678            }
3679            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3680                dr.mDrawableEnd.setState(state);
3681            }
3682        }
3683    }
3684
3685    @Override
3686    public void drawableHotspotChanged(float x, float y) {
3687        super.drawableHotspotChanged(x, y);
3688
3689        final Drawables dr = mDrawables;
3690        if (dr != null) {
3691            if (dr.mDrawableTop != null) {
3692                dr.mDrawableTop.setHotspot(x, y);
3693            }
3694            if (dr.mDrawableBottom != null) {
3695                dr.mDrawableBottom.setHotspot(x, y);
3696            }
3697            if (dr.mDrawableLeft != null) {
3698                dr.mDrawableLeft.setHotspot(x, y);
3699            }
3700            if (dr.mDrawableRight != null) {
3701                dr.mDrawableRight.setHotspot(x, y);
3702            }
3703            if (dr.mDrawableStart != null) {
3704                dr.mDrawableStart.setHotspot(x, y);
3705            }
3706            if (dr.mDrawableEnd != null) {
3707                dr.mDrawableEnd.setHotspot(x, y);
3708            }
3709        }
3710    }
3711
3712    @Override
3713    public Parcelable onSaveInstanceState() {
3714        Parcelable superState = super.onSaveInstanceState();
3715
3716        // Save state if we are forced to
3717        boolean save = mFreezesText;
3718        int start = 0;
3719        int end = 0;
3720
3721        if (mText != null) {
3722            start = getSelectionStart();
3723            end = getSelectionEnd();
3724            if (start >= 0 || end >= 0) {
3725                // Or save state if there is a selection
3726                save = true;
3727            }
3728        }
3729
3730        if (save) {
3731            SavedState ss = new SavedState(superState);
3732            // XXX Should also save the current scroll position!
3733            ss.selStart = start;
3734            ss.selEnd = end;
3735
3736            if (mText instanceof Spanned) {
3737                Spannable sp = new SpannableStringBuilder(mText);
3738
3739                if (mEditor != null) {
3740                    removeMisspelledSpans(sp);
3741                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3742                }
3743
3744                ss.text = sp;
3745            } else {
3746                ss.text = mText.toString();
3747            }
3748
3749            if (isFocused() && start >= 0 && end >= 0) {
3750                ss.frozenWithFocus = true;
3751            }
3752
3753            ss.error = getError();
3754
3755            return ss;
3756        }
3757
3758        return superState;
3759    }
3760
3761    void removeMisspelledSpans(Spannable spannable) {
3762        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3763                SuggestionSpan.class);
3764        for (int i = 0; i < suggestionSpans.length; i++) {
3765            int flags = suggestionSpans[i].getFlags();
3766            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3767                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3768                spannable.removeSpan(suggestionSpans[i]);
3769            }
3770        }
3771    }
3772
3773    @Override
3774    public void onRestoreInstanceState(Parcelable state) {
3775        if (!(state instanceof SavedState)) {
3776            super.onRestoreInstanceState(state);
3777            return;
3778        }
3779
3780        SavedState ss = (SavedState)state;
3781        super.onRestoreInstanceState(ss.getSuperState());
3782
3783        // XXX restore buffer type too, as well as lots of other stuff
3784        if (ss.text != null) {
3785            setText(ss.text);
3786        }
3787
3788        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3789            if (mText instanceof Spannable) {
3790                int len = mText.length();
3791
3792                if (ss.selStart > len || ss.selEnd > len) {
3793                    String restored = "";
3794
3795                    if (ss.text != null) {
3796                        restored = "(restored) ";
3797                    }
3798
3799                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3800                          "/" + ss.selEnd + " out of range for " + restored +
3801                          "text " + mText);
3802                } else {
3803                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3804
3805                    if (ss.frozenWithFocus) {
3806                        createEditorIfNeeded();
3807                        mEditor.mFrozenWithFocus = true;
3808                    }
3809                }
3810            }
3811        }
3812
3813        if (ss.error != null) {
3814            final CharSequence error = ss.error;
3815            // Display the error later, after the first layout pass
3816            post(new Runnable() {
3817                public void run() {
3818                    setError(error);
3819                }
3820            });
3821        }
3822    }
3823
3824    /**
3825     * Control whether this text view saves its entire text contents when
3826     * freezing to an icicle, in addition to dynamic state such as cursor
3827     * position.  By default this is false, not saving the text.  Set to true
3828     * if the text in the text view is not being saved somewhere else in
3829     * persistent storage (such as in a content provider) so that if the
3830     * view is later thawed the user will not lose their data.
3831     *
3832     * @param freezesText Controls whether a frozen icicle should include the
3833     * entire text data: true to include it, false to not.
3834     *
3835     * @attr ref android.R.styleable#TextView_freezesText
3836     */
3837    @android.view.RemotableViewMethod
3838    public void setFreezesText(boolean freezesText) {
3839        mFreezesText = freezesText;
3840    }
3841
3842    /**
3843     * Return whether this text view is including its entire text contents
3844     * in frozen icicles.
3845     *
3846     * @return Returns true if text is included, false if it isn't.
3847     *
3848     * @see #setFreezesText
3849     */
3850    public boolean getFreezesText() {
3851        return mFreezesText;
3852    }
3853
3854    ///////////////////////////////////////////////////////////////////////////
3855
3856    /**
3857     * Sets the Factory used to create new Editables.
3858     */
3859    public final void setEditableFactory(Editable.Factory factory) {
3860        mEditableFactory = factory;
3861        setText(mText);
3862    }
3863
3864    /**
3865     * Sets the Factory used to create new Spannables.
3866     */
3867    public final void setSpannableFactory(Spannable.Factory factory) {
3868        mSpannableFactory = factory;
3869        setText(mText);
3870    }
3871
3872    /**
3873     * Sets the string value of the TextView. TextView <em>does not</em> accept
3874     * HTML-like formatting, which you can do with text strings in XML resource files.
3875     * To style your strings, attach android.text.style.* objects to a
3876     * {@link android.text.SpannableString SpannableString}, or see the
3877     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3878     * Available Resource Types</a> documentation for an example of setting
3879     * formatted text in the XML resource file.
3880     *
3881     * @attr ref android.R.styleable#TextView_text
3882     */
3883    @android.view.RemotableViewMethod
3884    public final void setText(CharSequence text) {
3885        setText(text, mBufferType);
3886    }
3887
3888    /**
3889     * Like {@link #setText(CharSequence)},
3890     * except that the cursor position (if any) is retained in the new text.
3891     *
3892     * @param text The new text to place in the text view.
3893     *
3894     * @see #setText(CharSequence)
3895     */
3896    @android.view.RemotableViewMethod
3897    public final void setTextKeepState(CharSequence text) {
3898        setTextKeepState(text, mBufferType);
3899    }
3900
3901    /**
3902     * Sets the text that this TextView is to display (see
3903     * {@link #setText(CharSequence)}) and also sets whether it is stored
3904     * in a styleable/spannable buffer and whether it is editable.
3905     *
3906     * @attr ref android.R.styleable#TextView_text
3907     * @attr ref android.R.styleable#TextView_bufferType
3908     */
3909    public void setText(CharSequence text, BufferType type) {
3910        setText(text, type, true, 0);
3911
3912        if (mCharWrapper != null) {
3913            mCharWrapper.mChars = null;
3914        }
3915    }
3916
3917    private void setText(CharSequence text, BufferType type,
3918                         boolean notifyBefore, int oldlen) {
3919        if (text == null) {
3920            text = "";
3921        }
3922
3923        // If suggestions are not enabled, remove the suggestion spans from the text
3924        if (!isSuggestionsEnabled()) {
3925            text = removeSuggestionSpans(text);
3926        }
3927
3928        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3929
3930        if (text instanceof Spanned &&
3931            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3932            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3933                setHorizontalFadingEdgeEnabled(true);
3934                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3935            } else {
3936                setHorizontalFadingEdgeEnabled(false);
3937                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3938            }
3939            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3940        }
3941
3942        int n = mFilters.length;
3943        for (int i = 0; i < n; i++) {
3944            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3945            if (out != null) {
3946                text = out;
3947            }
3948        }
3949
3950        if (notifyBefore) {
3951            if (mText != null) {
3952                oldlen = mText.length();
3953                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3954            } else {
3955                sendBeforeTextChanged("", 0, 0, text.length());
3956            }
3957        }
3958
3959        boolean needEditableForNotification = false;
3960
3961        if (mListeners != null && mListeners.size() != 0) {
3962            needEditableForNotification = true;
3963        }
3964
3965        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3966                needEditableForNotification) {
3967            createEditorIfNeeded();
3968            Editable t = mEditableFactory.newEditable(text);
3969            text = t;
3970            setFilters(t, mFilters);
3971            InputMethodManager imm = InputMethodManager.peekInstance();
3972            if (imm != null) imm.restartInput(this);
3973        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3974            text = mSpannableFactory.newSpannable(text);
3975        } else if (!(text instanceof CharWrapper)) {
3976            text = TextUtils.stringOrSpannedString(text);
3977        }
3978
3979        if (mAutoLinkMask != 0) {
3980            Spannable s2;
3981
3982            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3983                s2 = (Spannable) text;
3984            } else {
3985                s2 = mSpannableFactory.newSpannable(text);
3986            }
3987
3988            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3989                text = s2;
3990                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3991
3992                /*
3993                 * We must go ahead and set the text before changing the
3994                 * movement method, because setMovementMethod() may call
3995                 * setText() again to try to upgrade the buffer type.
3996                 */
3997                mText = text;
3998
3999                // Do not change the movement method for text that support text selection as it
4000                // would prevent an arbitrary cursor displacement.
4001                if (mLinksClickable && !textCanBeSelected()) {
4002                    setMovementMethod(LinkMovementMethod.getInstance());
4003                }
4004            }
4005        }
4006
4007        mBufferType = type;
4008        mText = text;
4009
4010        if (mTransformation == null) {
4011            mTransformed = text;
4012        } else {
4013            mTransformed = mTransformation.getTransformation(text, this);
4014        }
4015
4016        final int textLength = text.length();
4017
4018        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4019            Spannable sp = (Spannable) text;
4020
4021            // Remove any ChangeWatchers that might have come from other TextViews.
4022            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4023            final int count = watchers.length;
4024            for (int i = 0; i < count; i++) {
4025                sp.removeSpan(watchers[i]);
4026            }
4027
4028            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4029
4030            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4031                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4032
4033            if (mEditor != null) mEditor.addSpanWatchers(sp);
4034
4035            if (mTransformation != null) {
4036                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4037            }
4038
4039            if (mMovement != null) {
4040                mMovement.initialize(this, (Spannable) text);
4041
4042                /*
4043                 * Initializing the movement method will have set the
4044                 * selection, so reset mSelectionMoved to keep that from
4045                 * interfering with the normal on-focus selection-setting.
4046                 */
4047                if (mEditor != null) mEditor.mSelectionMoved = false;
4048            }
4049        }
4050
4051        if (mLayout != null) {
4052            checkForRelayout();
4053        }
4054
4055        sendOnTextChanged(text, 0, oldlen, textLength);
4056        onTextChanged(text, 0, oldlen, textLength);
4057
4058        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4059
4060        if (needEditableForNotification) {
4061            sendAfterTextChanged((Editable) text);
4062        }
4063
4064        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4065        if (mEditor != null) mEditor.prepareCursorControllers();
4066    }
4067
4068    /**
4069     * Sets the TextView to display the specified slice of the specified
4070     * char array.  You must promise that you will not change the contents
4071     * of the array except for right before another call to setText(),
4072     * since the TextView has no way to know that the text
4073     * has changed and that it needs to invalidate and re-layout.
4074     */
4075    public final void setText(char[] text, int start, int len) {
4076        int oldlen = 0;
4077
4078        if (start < 0 || len < 0 || start + len > text.length) {
4079            throw new IndexOutOfBoundsException(start + ", " + len);
4080        }
4081
4082        /*
4083         * We must do the before-notification here ourselves because if
4084         * the old text is a CharWrapper we destroy it before calling
4085         * into the normal path.
4086         */
4087        if (mText != null) {
4088            oldlen = mText.length();
4089            sendBeforeTextChanged(mText, 0, oldlen, len);
4090        } else {
4091            sendBeforeTextChanged("", 0, 0, len);
4092        }
4093
4094        if (mCharWrapper == null) {
4095            mCharWrapper = new CharWrapper(text, start, len);
4096        } else {
4097            mCharWrapper.set(text, start, len);
4098        }
4099
4100        setText(mCharWrapper, mBufferType, false, oldlen);
4101    }
4102
4103    /**
4104     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4105     * except that the cursor position (if any) is retained in the new text.
4106     *
4107     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4108     */
4109    public final void setTextKeepState(CharSequence text, BufferType type) {
4110        int start = getSelectionStart();
4111        int end = getSelectionEnd();
4112        int len = text.length();
4113
4114        setText(text, type);
4115
4116        if (start >= 0 || end >= 0) {
4117            if (mText instanceof Spannable) {
4118                Selection.setSelection((Spannable) mText,
4119                                       Math.max(0, Math.min(start, len)),
4120                                       Math.max(0, Math.min(end, len)));
4121            }
4122        }
4123    }
4124
4125    @android.view.RemotableViewMethod
4126    public final void setText(int resid) {
4127        setText(getContext().getResources().getText(resid));
4128    }
4129
4130    public final void setText(int resid, BufferType type) {
4131        setText(getContext().getResources().getText(resid), type);
4132    }
4133
4134    /**
4135     * Sets the text to be displayed when the text of the TextView is empty.
4136     * Null means to use the normal empty text. The hint does not currently
4137     * participate in determining the size of the view.
4138     *
4139     * @attr ref android.R.styleable#TextView_hint
4140     */
4141    @android.view.RemotableViewMethod
4142    public final void setHint(CharSequence hint) {
4143        mHint = TextUtils.stringOrSpannedString(hint);
4144
4145        if (mLayout != null) {
4146            checkForRelayout();
4147        }
4148
4149        if (mText.length() == 0) {
4150            invalidate();
4151        }
4152
4153        // Invalidate display list if hint is currently used
4154        if (mEditor != null && mText.length() == 0 && mHint != null) {
4155            mEditor.invalidateTextDisplayList();
4156        }
4157    }
4158
4159    /**
4160     * Sets the text to be displayed when the text of the TextView is empty,
4161     * from a resource.
4162     *
4163     * @attr ref android.R.styleable#TextView_hint
4164     */
4165    @android.view.RemotableViewMethod
4166    public final void setHint(int resid) {
4167        setHint(getContext().getResources().getText(resid));
4168    }
4169
4170    /**
4171     * Returns the hint that is displayed when the text of the TextView
4172     * is empty.
4173     *
4174     * @attr ref android.R.styleable#TextView_hint
4175     */
4176    @ViewDebug.CapturedViewProperty
4177    public CharSequence getHint() {
4178        return mHint;
4179    }
4180
4181    boolean isSingleLine() {
4182        return mSingleLine;
4183    }
4184
4185    private static boolean isMultilineInputType(int type) {
4186        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4187            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4188    }
4189
4190    /**
4191     * Removes the suggestion spans.
4192     */
4193    CharSequence removeSuggestionSpans(CharSequence text) {
4194       if (text instanceof Spanned) {
4195           Spannable spannable;
4196           if (text instanceof Spannable) {
4197               spannable = (Spannable) text;
4198           } else {
4199               spannable = new SpannableString(text);
4200               text = spannable;
4201           }
4202
4203           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4204           for (int i = 0; i < spans.length; i++) {
4205               spannable.removeSpan(spans[i]);
4206           }
4207       }
4208       return text;
4209    }
4210
4211    /**
4212     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4213     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4214     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4215     * then a soft keyboard will not be displayed for this text view.
4216     *
4217     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4218     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4219     * type.
4220     *
4221     * @see #getInputType()
4222     * @see #setRawInputType(int)
4223     * @see android.text.InputType
4224     * @attr ref android.R.styleable#TextView_inputType
4225     */
4226    public void setInputType(int type) {
4227        final boolean wasPassword = isPasswordInputType(getInputType());
4228        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4229        setInputType(type, false);
4230        final boolean isPassword = isPasswordInputType(type);
4231        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4232        boolean forceUpdate = false;
4233        if (isPassword) {
4234            setTransformationMethod(PasswordTransformationMethod.getInstance());
4235            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4236        } else if (isVisiblePassword) {
4237            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4238                forceUpdate = true;
4239            }
4240            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4241        } else if (wasPassword || wasVisiblePassword) {
4242            // not in password mode, clean up typeface and transformation
4243            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4244            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4245                forceUpdate = true;
4246            }
4247        }
4248
4249        boolean singleLine = !isMultilineInputType(type);
4250
4251        // We need to update the single line mode if it has changed or we
4252        // were previously in password mode.
4253        if (mSingleLine != singleLine || forceUpdate) {
4254            // Change single line mode, but only change the transformation if
4255            // we are not in password mode.
4256            applySingleLine(singleLine, !isPassword, true);
4257        }
4258
4259        if (!isSuggestionsEnabled()) {
4260            mText = removeSuggestionSpans(mText);
4261        }
4262
4263        InputMethodManager imm = InputMethodManager.peekInstance();
4264        if (imm != null) imm.restartInput(this);
4265    }
4266
4267    /**
4268     * It would be better to rely on the input type for everything. A password inputType should have
4269     * a password transformation. We should hence use isPasswordInputType instead of this method.
4270     *
4271     * We should:
4272     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4273     * would install the correct transformation).
4274     * - Refuse the installation of a non-password transformation in setTransformation if the input
4275     * type is password.
4276     *
4277     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4278     * is useful since it matches what the user can see (obfuscated text or not).
4279     *
4280     * @return true if the current transformation method is of the password type.
4281     */
4282    private boolean hasPasswordTransformationMethod() {
4283        return mTransformation instanceof PasswordTransformationMethod;
4284    }
4285
4286    private static boolean isPasswordInputType(int inputType) {
4287        final int variation =
4288                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4289        return variation
4290                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4291                || variation
4292                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4293                || variation
4294                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4295    }
4296
4297    private static boolean isVisiblePasswordInputType(int inputType) {
4298        final int variation =
4299                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4300        return variation
4301                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4302    }
4303
4304    /**
4305     * Directly change the content type integer of the text view, without
4306     * modifying any other state.
4307     * @see #setInputType(int)
4308     * @see android.text.InputType
4309     * @attr ref android.R.styleable#TextView_inputType
4310     */
4311    public void setRawInputType(int type) {
4312        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4313        createEditorIfNeeded();
4314        mEditor.mInputType = type;
4315    }
4316
4317    private void setInputType(int type, boolean direct) {
4318        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4319        KeyListener input;
4320        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4321            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4322            TextKeyListener.Capitalize cap;
4323            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4324                cap = TextKeyListener.Capitalize.CHARACTERS;
4325            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4326                cap = TextKeyListener.Capitalize.WORDS;
4327            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4328                cap = TextKeyListener.Capitalize.SENTENCES;
4329            } else {
4330                cap = TextKeyListener.Capitalize.NONE;
4331            }
4332            input = TextKeyListener.getInstance(autotext, cap);
4333        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4334            input = DigitsKeyListener.getInstance(
4335                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4336                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4337        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4338            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4339                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4340                    input = DateKeyListener.getInstance();
4341                    break;
4342                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4343                    input = TimeKeyListener.getInstance();
4344                    break;
4345                default:
4346                    input = DateTimeKeyListener.getInstance();
4347                    break;
4348            }
4349        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4350            input = DialerKeyListener.getInstance();
4351        } else {
4352            input = TextKeyListener.getInstance();
4353        }
4354        setRawInputType(type);
4355        if (direct) {
4356            createEditorIfNeeded();
4357            mEditor.mKeyListener = input;
4358        } else {
4359            setKeyListenerOnly(input);
4360        }
4361    }
4362
4363    /**
4364     * Get the type of the editable content.
4365     *
4366     * @see #setInputType(int)
4367     * @see android.text.InputType
4368     */
4369    public int getInputType() {
4370        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4371    }
4372
4373    /**
4374     * Change the editor type integer associated with the text view, which
4375     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4376     * has focus.
4377     * @see #getImeOptions
4378     * @see android.view.inputmethod.EditorInfo
4379     * @attr ref android.R.styleable#TextView_imeOptions
4380     */
4381    public void setImeOptions(int imeOptions) {
4382        createEditorIfNeeded();
4383        mEditor.createInputContentTypeIfNeeded();
4384        mEditor.mInputContentType.imeOptions = imeOptions;
4385    }
4386
4387    /**
4388     * Get the type of the IME editor.
4389     *
4390     * @see #setImeOptions(int)
4391     * @see android.view.inputmethod.EditorInfo
4392     */
4393    public int getImeOptions() {
4394        return mEditor != null && mEditor.mInputContentType != null
4395                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4396    }
4397
4398    /**
4399     * Change the custom IME action associated with the text view, which
4400     * will be reported to an IME with {@link EditorInfo#actionLabel}
4401     * and {@link EditorInfo#actionId} when it has focus.
4402     * @see #getImeActionLabel
4403     * @see #getImeActionId
4404     * @see android.view.inputmethod.EditorInfo
4405     * @attr ref android.R.styleable#TextView_imeActionLabel
4406     * @attr ref android.R.styleable#TextView_imeActionId
4407     */
4408    public void setImeActionLabel(CharSequence label, int actionId) {
4409        createEditorIfNeeded();
4410        mEditor.createInputContentTypeIfNeeded();
4411        mEditor.mInputContentType.imeActionLabel = label;
4412        mEditor.mInputContentType.imeActionId = actionId;
4413    }
4414
4415    /**
4416     * Get the IME action label previous set with {@link #setImeActionLabel}.
4417     *
4418     * @see #setImeActionLabel
4419     * @see android.view.inputmethod.EditorInfo
4420     */
4421    public CharSequence getImeActionLabel() {
4422        return mEditor != null && mEditor.mInputContentType != null
4423                ? mEditor.mInputContentType.imeActionLabel : null;
4424    }
4425
4426    /**
4427     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4428     *
4429     * @see #setImeActionLabel
4430     * @see android.view.inputmethod.EditorInfo
4431     */
4432    public int getImeActionId() {
4433        return mEditor != null && mEditor.mInputContentType != null
4434                ? mEditor.mInputContentType.imeActionId : 0;
4435    }
4436
4437    /**
4438     * Set a special listener to be called when an action is performed
4439     * on the text view.  This will be called when the enter key is pressed,
4440     * or when an action supplied to the IME is selected by the user.  Setting
4441     * this means that the normal hard key event will not insert a newline
4442     * into the text view, even if it is multi-line; holding down the ALT
4443     * modifier will, however, allow the user to insert a newline character.
4444     */
4445    public void setOnEditorActionListener(OnEditorActionListener l) {
4446        createEditorIfNeeded();
4447        mEditor.createInputContentTypeIfNeeded();
4448        mEditor.mInputContentType.onEditorActionListener = l;
4449    }
4450
4451    /**
4452     * Called when an attached input method calls
4453     * {@link InputConnection#performEditorAction(int)
4454     * InputConnection.performEditorAction()}
4455     * for this text view.  The default implementation will call your action
4456     * listener supplied to {@link #setOnEditorActionListener}, or perform
4457     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4458     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4459     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4460     * EditorInfo.IME_ACTION_DONE}.
4461     *
4462     * <p>For backwards compatibility, if no IME options have been set and the
4463     * text view would not normally advance focus on enter, then
4464     * the NEXT and DONE actions received here will be turned into an enter
4465     * key down/up pair to go through the normal key handling.
4466     *
4467     * @param actionCode The code of the action being performed.
4468     *
4469     * @see #setOnEditorActionListener
4470     */
4471    public void onEditorAction(int actionCode) {
4472        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4473        if (ict != null) {
4474            if (ict.onEditorActionListener != null) {
4475                if (ict.onEditorActionListener.onEditorAction(this,
4476                        actionCode, null)) {
4477                    return;
4478                }
4479            }
4480
4481            // This is the handling for some default action.
4482            // Note that for backwards compatibility we don't do this
4483            // default handling if explicit ime options have not been given,
4484            // instead turning this into the normal enter key codes that an
4485            // app may be expecting.
4486            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4487                View v = focusSearch(FOCUS_FORWARD);
4488                if (v != null) {
4489                    if (!v.requestFocus(FOCUS_FORWARD)) {
4490                        throw new IllegalStateException("focus search returned a view " +
4491                                "that wasn't able to take focus!");
4492                    }
4493                }
4494                return;
4495
4496            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4497                View v = focusSearch(FOCUS_BACKWARD);
4498                if (v != null) {
4499                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4500                        throw new IllegalStateException("focus search returned a view " +
4501                                "that wasn't able to take focus!");
4502                    }
4503                }
4504                return;
4505
4506            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4507                InputMethodManager imm = InputMethodManager.peekInstance();
4508                if (imm != null && imm.isActive(this)) {
4509                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4510                }
4511                return;
4512            }
4513        }
4514
4515        ViewRootImpl viewRootImpl = getViewRootImpl();
4516        if (viewRootImpl != null) {
4517            long eventTime = SystemClock.uptimeMillis();
4518            viewRootImpl.dispatchKeyFromIme(
4519                    new KeyEvent(eventTime, eventTime,
4520                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4521                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4522                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4523                    | KeyEvent.FLAG_EDITOR_ACTION));
4524            viewRootImpl.dispatchKeyFromIme(
4525                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4526                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4527                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4528                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4529                    | KeyEvent.FLAG_EDITOR_ACTION));
4530        }
4531    }
4532
4533    /**
4534     * Set the private content type of the text, which is the
4535     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4536     * field that will be filled in when creating an input connection.
4537     *
4538     * @see #getPrivateImeOptions()
4539     * @see EditorInfo#privateImeOptions
4540     * @attr ref android.R.styleable#TextView_privateImeOptions
4541     */
4542    public void setPrivateImeOptions(String type) {
4543        createEditorIfNeeded();
4544        mEditor.createInputContentTypeIfNeeded();
4545        mEditor.mInputContentType.privateImeOptions = type;
4546    }
4547
4548    /**
4549     * Get the private type of the content.
4550     *
4551     * @see #setPrivateImeOptions(String)
4552     * @see EditorInfo#privateImeOptions
4553     */
4554    public String getPrivateImeOptions() {
4555        return mEditor != null && mEditor.mInputContentType != null
4556                ? mEditor.mInputContentType.privateImeOptions : null;
4557    }
4558
4559    /**
4560     * Set the extra input data of the text, which is the
4561     * {@link EditorInfo#extras TextBoxAttribute.extras}
4562     * Bundle that will be filled in when creating an input connection.  The
4563     * given integer is the resource ID of an XML resource holding an
4564     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4565     *
4566     * @see #getInputExtras(boolean)
4567     * @see EditorInfo#extras
4568     * @attr ref android.R.styleable#TextView_editorExtras
4569     */
4570    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4571        createEditorIfNeeded();
4572        XmlResourceParser parser = getResources().getXml(xmlResId);
4573        mEditor.createInputContentTypeIfNeeded();
4574        mEditor.mInputContentType.extras = new Bundle();
4575        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4576    }
4577
4578    /**
4579     * Retrieve the input extras currently associated with the text view, which
4580     * can be viewed as well as modified.
4581     *
4582     * @param create If true, the extras will be created if they don't already
4583     * exist.  Otherwise, null will be returned if none have been created.
4584     * @see #setInputExtras(int)
4585     * @see EditorInfo#extras
4586     * @attr ref android.R.styleable#TextView_editorExtras
4587     */
4588    public Bundle getInputExtras(boolean create) {
4589        if (mEditor == null && !create) return null;
4590        createEditorIfNeeded();
4591        if (mEditor.mInputContentType == null) {
4592            if (!create) return null;
4593            mEditor.createInputContentTypeIfNeeded();
4594        }
4595        if (mEditor.mInputContentType.extras == null) {
4596            if (!create) return null;
4597            mEditor.mInputContentType.extras = new Bundle();
4598        }
4599        return mEditor.mInputContentType.extras;
4600    }
4601
4602    /**
4603     * Returns the error message that was set to be displayed with
4604     * {@link #setError}, or <code>null</code> if no error was set
4605     * or if it the error was cleared by the widget after user input.
4606     */
4607    public CharSequence getError() {
4608        return mEditor == null ? null : mEditor.mError;
4609    }
4610
4611    /**
4612     * Sets the right-hand compound drawable of the TextView to the "error"
4613     * icon and sets an error message that will be displayed in a popup when
4614     * the TextView has focus.  The icon and error message will be reset to
4615     * null when any key events cause changes to the TextView's text.  If the
4616     * <code>error</code> is <code>null</code>, the error message and icon
4617     * will be cleared.
4618     */
4619    @android.view.RemotableViewMethod
4620    public void setError(CharSequence error) {
4621        if (error == null) {
4622            setError(null, null);
4623        } else {
4624            Drawable dr = getContext().getDrawable(
4625                    com.android.internal.R.drawable.indicator_input_error);
4626
4627            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4628            setError(error, dr);
4629        }
4630    }
4631
4632    /**
4633     * Sets the right-hand compound drawable of the TextView to the specified
4634     * icon and sets an error message that will be displayed in a popup when
4635     * the TextView has focus.  The icon and error message will be reset to
4636     * null when any key events cause changes to the TextView's text.  The
4637     * drawable must already have had {@link Drawable#setBounds} set on it.
4638     * If the <code>error</code> is <code>null</code>, the error message will
4639     * be cleared (and you should provide a <code>null</code> icon as well).
4640     */
4641    public void setError(CharSequence error, Drawable icon) {
4642        createEditorIfNeeded();
4643        mEditor.setError(error, icon);
4644        notifyViewAccessibilityStateChangedIfNeeded(
4645                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
4646    }
4647
4648    @Override
4649    protected boolean setFrame(int l, int t, int r, int b) {
4650        boolean result = super.setFrame(l, t, r, b);
4651
4652        if (mEditor != null) mEditor.setFrame();
4653
4654        restartMarqueeIfNeeded();
4655
4656        return result;
4657    }
4658
4659    private void restartMarqueeIfNeeded() {
4660        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4661            mRestartMarquee = false;
4662            startMarquee();
4663        }
4664    }
4665
4666    /**
4667     * Sets the list of input filters that will be used if the buffer is
4668     * Editable. Has no effect otherwise.
4669     *
4670     * @attr ref android.R.styleable#TextView_maxLength
4671     */
4672    public void setFilters(InputFilter[] filters) {
4673        if (filters == null) {
4674            throw new IllegalArgumentException();
4675        }
4676
4677        mFilters = filters;
4678
4679        if (mText instanceof Editable) {
4680            setFilters((Editable) mText, filters);
4681        }
4682    }
4683
4684    /**
4685     * Sets the list of input filters on the specified Editable,
4686     * and includes mInput in the list if it is an InputFilter.
4687     */
4688    private void setFilters(Editable e, InputFilter[] filters) {
4689        if (mEditor != null) {
4690            final boolean undoFilter = mEditor.mUndoInputFilter != null;
4691            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
4692            int num = 0;
4693            if (undoFilter) num++;
4694            if (keyFilter) num++;
4695            if (num > 0) {
4696                InputFilter[] nf = new InputFilter[filters.length + num];
4697
4698                System.arraycopy(filters, 0, nf, 0, filters.length);
4699                num = 0;
4700                if (undoFilter) {
4701                    nf[filters.length] = mEditor.mUndoInputFilter;
4702                    num++;
4703                }
4704                if (keyFilter) {
4705                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
4706                }
4707
4708                e.setFilters(nf);
4709                return;
4710            }
4711        }
4712        e.setFilters(filters);
4713    }
4714
4715    /**
4716     * Returns the current list of input filters.
4717     *
4718     * @attr ref android.R.styleable#TextView_maxLength
4719     */
4720    public InputFilter[] getFilters() {
4721        return mFilters;
4722    }
4723
4724    /////////////////////////////////////////////////////////////////////////
4725
4726    private int getBoxHeight(Layout l) {
4727        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
4728        int padding = (l == mHintLayout) ?
4729                getCompoundPaddingTop() + getCompoundPaddingBottom() :
4730                getExtendedPaddingTop() + getExtendedPaddingBottom();
4731        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
4732    }
4733
4734    int getVerticalOffset(boolean forceNormal) {
4735        int voffset = 0;
4736        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4737
4738        Layout l = mLayout;
4739        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4740            l = mHintLayout;
4741        }
4742
4743        if (gravity != Gravity.TOP) {
4744            int boxht = getBoxHeight(l);
4745            int textht = l.getHeight();
4746
4747            if (textht < boxht) {
4748                if (gravity == Gravity.BOTTOM)
4749                    voffset = boxht - textht;
4750                else // (gravity == Gravity.CENTER_VERTICAL)
4751                    voffset = (boxht - textht) >> 1;
4752            }
4753        }
4754        return voffset;
4755    }
4756
4757    private int getBottomVerticalOffset(boolean forceNormal) {
4758        int voffset = 0;
4759        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4760
4761        Layout l = mLayout;
4762        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4763            l = mHintLayout;
4764        }
4765
4766        if (gravity != Gravity.BOTTOM) {
4767            int boxht = getBoxHeight(l);
4768            int textht = l.getHeight();
4769
4770            if (textht < boxht) {
4771                if (gravity == Gravity.TOP)
4772                    voffset = boxht - textht;
4773                else // (gravity == Gravity.CENTER_VERTICAL)
4774                    voffset = (boxht - textht) >> 1;
4775            }
4776        }
4777        return voffset;
4778    }
4779
4780    void invalidateCursorPath() {
4781        if (mHighlightPathBogus) {
4782            invalidateCursor();
4783        } else {
4784            final int horizontalPadding = getCompoundPaddingLeft();
4785            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4786
4787            if (mEditor.mCursorCount == 0) {
4788                synchronized (TEMP_RECTF) {
4789                    /*
4790                     * The reason for this concern about the thickness of the
4791                     * cursor and doing the floor/ceil on the coordinates is that
4792                     * some EditTexts (notably textfields in the Browser) have
4793                     * anti-aliased text where not all the characters are
4794                     * necessarily at integer-multiple locations.  This should
4795                     * make sure the entire cursor gets invalidated instead of
4796                     * sometimes missing half a pixel.
4797                     */
4798                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4799                    if (thick < 1.0f) {
4800                        thick = 1.0f;
4801                    }
4802
4803                    thick /= 2.0f;
4804
4805                    // mHighlightPath is guaranteed to be non null at that point.
4806                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4807
4808                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4809                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4810                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4811                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4812                }
4813            } else {
4814                for (int i = 0; i < mEditor.mCursorCount; i++) {
4815                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4816                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4817                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4818                }
4819            }
4820        }
4821    }
4822
4823    void invalidateCursor() {
4824        int where = getSelectionEnd();
4825
4826        invalidateCursor(where, where, where);
4827    }
4828
4829    private void invalidateCursor(int a, int b, int c) {
4830        if (a >= 0 || b >= 0 || c >= 0) {
4831            int start = Math.min(Math.min(a, b), c);
4832            int end = Math.max(Math.max(a, b), c);
4833            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4834        }
4835    }
4836
4837    /**
4838     * Invalidates the region of text enclosed between the start and end text offsets.
4839     */
4840    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4841        if (mLayout == null) {
4842            invalidate();
4843        } else {
4844                int lineStart = mLayout.getLineForOffset(start);
4845                int top = mLayout.getLineTop(lineStart);
4846
4847                // This is ridiculous, but the descent from the line above
4848                // can hang down into the line we really want to redraw,
4849                // so we have to invalidate part of the line above to make
4850                // sure everything that needs to be redrawn really is.
4851                // (But not the whole line above, because that would cause
4852                // the same problem with the descenders on the line above it!)
4853                if (lineStart > 0) {
4854                    top -= mLayout.getLineDescent(lineStart - 1);
4855                }
4856
4857                int lineEnd;
4858
4859                if (start == end)
4860                    lineEnd = lineStart;
4861                else
4862                    lineEnd = mLayout.getLineForOffset(end);
4863
4864                int bottom = mLayout.getLineBottom(lineEnd);
4865
4866                // mEditor can be null in case selection is set programmatically.
4867                if (invalidateCursor && mEditor != null) {
4868                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4869                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4870                        top = Math.min(top, bounds.top);
4871                        bottom = Math.max(bottom, bounds.bottom);
4872                    }
4873                }
4874
4875                final int compoundPaddingLeft = getCompoundPaddingLeft();
4876                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4877
4878                int left, right;
4879                if (lineStart == lineEnd && !invalidateCursor) {
4880                    left = (int) mLayout.getPrimaryHorizontal(start);
4881                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4882                    left += compoundPaddingLeft;
4883                    right += compoundPaddingLeft;
4884                } else {
4885                    // Rectangle bounding box when the region spans several lines
4886                    left = compoundPaddingLeft;
4887                    right = getWidth() - getCompoundPaddingRight();
4888                }
4889
4890                invalidate(mScrollX + left, verticalPadding + top,
4891                        mScrollX + right, verticalPadding + bottom);
4892        }
4893    }
4894
4895    private void registerForPreDraw() {
4896        if (!mPreDrawRegistered) {
4897            getViewTreeObserver().addOnPreDrawListener(this);
4898            mPreDrawRegistered = true;
4899        }
4900    }
4901
4902    private void unregisterForPreDraw() {
4903        getViewTreeObserver().removeOnPreDrawListener(this);
4904        mPreDrawRegistered = false;
4905        mPreDrawListenerDetached = false;
4906    }
4907
4908    /**
4909     * {@inheritDoc}
4910     */
4911    public boolean onPreDraw() {
4912        if (mLayout == null) {
4913            assumeLayout();
4914        }
4915
4916        if (mMovement != null) {
4917            /* This code also provides auto-scrolling when a cursor is moved using a
4918             * CursorController (insertion point or selection limits).
4919             * For selection, ensure start or end is visible depending on controller's state.
4920             */
4921            int curs = getSelectionEnd();
4922            // Do not create the controller if it is not already created.
4923            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4924                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4925                curs = getSelectionStart();
4926            }
4927
4928            /*
4929             * TODO: This should really only keep the end in view if
4930             * it already was before the text changed.  I'm not sure
4931             * of a good way to tell from here if it was.
4932             */
4933            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4934                curs = mText.length();
4935            }
4936
4937            if (curs >= 0) {
4938                bringPointIntoView(curs);
4939            }
4940        } else {
4941            bringTextIntoView();
4942        }
4943
4944        // This has to be checked here since:
4945        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4946        //   a screen rotation) since layout is not yet initialized at that point.
4947        if (mEditor != null && mEditor.mCreatedWithASelection) {
4948            mEditor.startSelectionActionMode();
4949            mEditor.mCreatedWithASelection = false;
4950        }
4951
4952        // Phone specific code (there is no ExtractEditText on tablets).
4953        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4954        // not be set. Do the test here instead.
4955        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4956            mEditor.startSelectionActionMode();
4957        }
4958
4959        unregisterForPreDraw();
4960
4961        return true;
4962    }
4963
4964    @Override
4965    protected void onAttachedToWindow() {
4966        super.onAttachedToWindow();
4967
4968        mTemporaryDetach = false;
4969
4970        if (mEditor != null) mEditor.onAttachedToWindow();
4971
4972        if (mPreDrawListenerDetached) {
4973            getViewTreeObserver().addOnPreDrawListener(this);
4974            mPreDrawListenerDetached = false;
4975        }
4976    }
4977
4978    /** @hide */
4979    @Override
4980    protected void onDetachedFromWindowInternal() {
4981        if (mPreDrawRegistered) {
4982            getViewTreeObserver().removeOnPreDrawListener(this);
4983            mPreDrawListenerDetached = true;
4984        }
4985
4986        resetResolvedDrawables();
4987
4988        if (mEditor != null) mEditor.onDetachedFromWindow();
4989
4990        super.onDetachedFromWindowInternal();
4991    }
4992
4993    @Override
4994    public void onScreenStateChanged(int screenState) {
4995        super.onScreenStateChanged(screenState);
4996        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4997    }
4998
4999    @Override
5000    protected boolean isPaddingOffsetRequired() {
5001        return mShadowRadius != 0 || mDrawables != null;
5002    }
5003
5004    @Override
5005    protected int getLeftPaddingOffset() {
5006        return getCompoundPaddingLeft() - mPaddingLeft +
5007                (int) Math.min(0, mShadowDx - mShadowRadius);
5008    }
5009
5010    @Override
5011    protected int getTopPaddingOffset() {
5012        return (int) Math.min(0, mShadowDy - mShadowRadius);
5013    }
5014
5015    @Override
5016    protected int getBottomPaddingOffset() {
5017        return (int) Math.max(0, mShadowDy + mShadowRadius);
5018    }
5019
5020    @Override
5021    protected int getRightPaddingOffset() {
5022        return -(getCompoundPaddingRight() - mPaddingRight) +
5023                (int) Math.max(0, mShadowDx + mShadowRadius);
5024    }
5025
5026    @Override
5027    protected boolean verifyDrawable(Drawable who) {
5028        final boolean verified = super.verifyDrawable(who);
5029        if (!verified && mDrawables != null) {
5030            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
5031                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
5032                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
5033        }
5034        return verified;
5035    }
5036
5037    @Override
5038    public void jumpDrawablesToCurrentState() {
5039        super.jumpDrawablesToCurrentState();
5040        if (mDrawables != null) {
5041            if (mDrawables.mDrawableLeft != null) {
5042                mDrawables.mDrawableLeft.jumpToCurrentState();
5043            }
5044            if (mDrawables.mDrawableTop != null) {
5045                mDrawables.mDrawableTop.jumpToCurrentState();
5046            }
5047            if (mDrawables.mDrawableRight != null) {
5048                mDrawables.mDrawableRight.jumpToCurrentState();
5049            }
5050            if (mDrawables.mDrawableBottom != null) {
5051                mDrawables.mDrawableBottom.jumpToCurrentState();
5052            }
5053            if (mDrawables.mDrawableStart != null) {
5054                mDrawables.mDrawableStart.jumpToCurrentState();
5055            }
5056            if (mDrawables.mDrawableEnd != null) {
5057                mDrawables.mDrawableEnd.jumpToCurrentState();
5058            }
5059        }
5060    }
5061
5062    @Override
5063    public void invalidateDrawable(Drawable drawable) {
5064        boolean handled = false;
5065
5066        if (verifyDrawable(drawable)) {
5067            final Rect dirty = drawable.getBounds();
5068            int scrollX = mScrollX;
5069            int scrollY = mScrollY;
5070
5071            // IMPORTANT: The coordinates below are based on the coordinates computed
5072            // for each compound drawable in onDraw(). Make sure to update each section
5073            // accordingly.
5074            final TextView.Drawables drawables = mDrawables;
5075            if (drawables != null) {
5076                if (drawable == drawables.mDrawableLeft) {
5077                    final int compoundPaddingTop = getCompoundPaddingTop();
5078                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5079                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5080
5081                    scrollX += mPaddingLeft;
5082                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5083                    handled = true;
5084                } else if (drawable == drawables.mDrawableRight) {
5085                    final int compoundPaddingTop = getCompoundPaddingTop();
5086                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5087                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5088
5089                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5090                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5091                    handled = true;
5092                } else if (drawable == drawables.mDrawableTop) {
5093                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5094                    final int compoundPaddingRight = getCompoundPaddingRight();
5095                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5096
5097                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5098                    scrollY += mPaddingTop;
5099                    handled = true;
5100                } else if (drawable == drawables.mDrawableBottom) {
5101                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5102                    final int compoundPaddingRight = getCompoundPaddingRight();
5103                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5104
5105                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5106                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5107                    handled = true;
5108                }
5109            }
5110
5111            if (handled) {
5112                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5113                        dirty.right + scrollX, dirty.bottom + scrollY);
5114            }
5115        }
5116
5117        if (!handled) {
5118            super.invalidateDrawable(drawable);
5119        }
5120    }
5121
5122    @Override
5123    public boolean hasOverlappingRendering() {
5124        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5125        return ((getBackground() != null && getBackground().getCurrent() != null)
5126                || mText instanceof Spannable || hasSelection()
5127                || isHorizontalFadingEdgeEnabled());
5128    }
5129
5130    /**
5131     *
5132     * Returns the state of the {@code textIsSelectable} flag (See
5133     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5134     * to allow users to select and copy text in a non-editable TextView, the content of an
5135     * {@link EditText} can always be selected, independently of the value of this flag.
5136     * <p>
5137     *
5138     * @return True if the text displayed in this TextView can be selected by the user.
5139     *
5140     * @attr ref android.R.styleable#TextView_textIsSelectable
5141     */
5142    public boolean isTextSelectable() {
5143        return mEditor == null ? false : mEditor.mTextIsSelectable;
5144    }
5145
5146    /**
5147     * Sets whether the content of this view is selectable by the user. The default is
5148     * {@code false}, meaning that the content is not selectable.
5149     * <p>
5150     * When you use a TextView to display a useful piece of information to the user (such as a
5151     * contact's address), make it selectable, so that the user can select and copy its
5152     * content. You can also use set the XML attribute
5153     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5154     * <p>
5155     * When you call this method to set the value of {@code textIsSelectable}, it sets
5156     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5157     * and {@code longClickable} to the same value. These flags correspond to the attributes
5158     * {@link android.R.styleable#View_focusable android:focusable},
5159     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5160     * {@link android.R.styleable#View_clickable android:clickable}, and
5161     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5162     * flags to a state you had set previously, call one or more of the following methods:
5163     * {@link #setFocusable(boolean) setFocusable()},
5164     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5165     * {@link #setClickable(boolean) setClickable()} or
5166     * {@link #setLongClickable(boolean) setLongClickable()}.
5167     *
5168     * @param selectable Whether the content of this TextView should be selectable.
5169     */
5170    public void setTextIsSelectable(boolean selectable) {
5171        if (!selectable && mEditor == null) return; // false is default value with no edit data
5172
5173        createEditorIfNeeded();
5174        if (mEditor.mTextIsSelectable == selectable) return;
5175
5176        mEditor.mTextIsSelectable = selectable;
5177        setFocusableInTouchMode(selectable);
5178        setFocusable(selectable);
5179        setClickable(selectable);
5180        setLongClickable(selectable);
5181
5182        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5183
5184        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5185        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5186
5187        // Called by setText above, but safer in case of future code changes
5188        mEditor.prepareCursorControllers();
5189    }
5190
5191    @Override
5192    protected int[] onCreateDrawableState(int extraSpace) {
5193        final int[] drawableState;
5194
5195        if (mSingleLine) {
5196            drawableState = super.onCreateDrawableState(extraSpace);
5197        } else {
5198            drawableState = super.onCreateDrawableState(extraSpace + 1);
5199            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5200        }
5201
5202        if (isTextSelectable()) {
5203            // Disable pressed state, which was introduced when TextView was made clickable.
5204            // Prevents text color change.
5205            // setClickable(false) would have a similar effect, but it also disables focus changes
5206            // and long press actions, which are both needed by text selection.
5207            final int length = drawableState.length;
5208            for (int i = 0; i < length; i++) {
5209                if (drawableState[i] == R.attr.state_pressed) {
5210                    final int[] nonPressedState = new int[length - 1];
5211                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5212                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5213                    return nonPressedState;
5214                }
5215            }
5216        }
5217
5218        return drawableState;
5219    }
5220
5221    private Path getUpdatedHighlightPath() {
5222        Path highlight = null;
5223        Paint highlightPaint = mHighlightPaint;
5224
5225        final int selStart = getSelectionStart();
5226        final int selEnd = getSelectionEnd();
5227        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5228            if (selStart == selEnd) {
5229                if (mEditor != null && mEditor.isCursorVisible() &&
5230                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5231                        (2 * Editor.BLINK) < Editor.BLINK) {
5232                    if (mHighlightPathBogus) {
5233                        if (mHighlightPath == null) mHighlightPath = new Path();
5234                        mHighlightPath.reset();
5235                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5236                        mEditor.updateCursorsPositions();
5237                        mHighlightPathBogus = false;
5238                    }
5239
5240                    // XXX should pass to skin instead of drawing directly
5241                    highlightPaint.setColor(mCurTextColor);
5242                    highlightPaint.setStyle(Paint.Style.STROKE);
5243                    highlight = mHighlightPath;
5244                }
5245            } else {
5246                if (mHighlightPathBogus) {
5247                    if (mHighlightPath == null) mHighlightPath = new Path();
5248                    mHighlightPath.reset();
5249                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5250                    mHighlightPathBogus = false;
5251                }
5252
5253                // XXX should pass to skin instead of drawing directly
5254                highlightPaint.setColor(mHighlightColor);
5255                highlightPaint.setStyle(Paint.Style.FILL);
5256
5257                highlight = mHighlightPath;
5258            }
5259        }
5260        return highlight;
5261    }
5262
5263    /**
5264     * @hide
5265     */
5266    public int getHorizontalOffsetForDrawables() {
5267        return 0;
5268    }
5269
5270    @Override
5271    protected void onDraw(Canvas canvas) {
5272        restartMarqueeIfNeeded();
5273
5274        // Draw the background for this view
5275        super.onDraw(canvas);
5276
5277        final int compoundPaddingLeft = getCompoundPaddingLeft();
5278        final int compoundPaddingTop = getCompoundPaddingTop();
5279        final int compoundPaddingRight = getCompoundPaddingRight();
5280        final int compoundPaddingBottom = getCompoundPaddingBottom();
5281        final int scrollX = mScrollX;
5282        final int scrollY = mScrollY;
5283        final int right = mRight;
5284        final int left = mLeft;
5285        final int bottom = mBottom;
5286        final int top = mTop;
5287        final boolean isLayoutRtl = isLayoutRtl();
5288        final int offset = getHorizontalOffsetForDrawables();
5289        final int leftOffset = isLayoutRtl ? 0 : offset;
5290        final int rightOffset = isLayoutRtl ? offset : 0 ;
5291
5292        final Drawables dr = mDrawables;
5293        if (dr != null) {
5294            /*
5295             * Compound, not extended, because the icon is not clipped
5296             * if the text height is smaller.
5297             */
5298
5299            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5300            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5301
5302            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5303            // Make sure to update invalidateDrawable() when changing this code.
5304            if (dr.mDrawableLeft != null) {
5305                canvas.save();
5306                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5307                                 scrollY + compoundPaddingTop +
5308                                 (vspace - dr.mDrawableHeightLeft) / 2);
5309                dr.mDrawableLeft.draw(canvas);
5310                canvas.restore();
5311            }
5312
5313            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5314            // Make sure to update invalidateDrawable() when changing this code.
5315            if (dr.mDrawableRight != null) {
5316                canvas.save();
5317                canvas.translate(scrollX + right - left - mPaddingRight
5318                        - dr.mDrawableSizeRight - rightOffset,
5319                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5320                dr.mDrawableRight.draw(canvas);
5321                canvas.restore();
5322            }
5323
5324            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5325            // Make sure to update invalidateDrawable() when changing this code.
5326            if (dr.mDrawableTop != null) {
5327                canvas.save();
5328                canvas.translate(scrollX + compoundPaddingLeft +
5329                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5330                dr.mDrawableTop.draw(canvas);
5331                canvas.restore();
5332            }
5333
5334            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5335            // Make sure to update invalidateDrawable() when changing this code.
5336            if (dr.mDrawableBottom != null) {
5337                canvas.save();
5338                canvas.translate(scrollX + compoundPaddingLeft +
5339                        (hspace - dr.mDrawableWidthBottom) / 2,
5340                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5341                dr.mDrawableBottom.draw(canvas);
5342                canvas.restore();
5343            }
5344        }
5345
5346        int color = mCurTextColor;
5347
5348        if (mLayout == null) {
5349            assumeLayout();
5350        }
5351
5352        Layout layout = mLayout;
5353
5354        if (mHint != null && mText.length() == 0) {
5355            if (mHintTextColor != null) {
5356                color = mCurHintTextColor;
5357            }
5358
5359            layout = mHintLayout;
5360        }
5361
5362        mTextPaint.setColor(color);
5363        mTextPaint.drawableState = getDrawableState();
5364
5365        canvas.save();
5366        /*  Would be faster if we didn't have to do this. Can we chop the
5367            (displayable) text so that we don't need to do this ever?
5368        */
5369
5370        int extendedPaddingTop = getExtendedPaddingTop();
5371        int extendedPaddingBottom = getExtendedPaddingBottom();
5372
5373        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5374        final int maxScrollY = mLayout.getHeight() - vspace;
5375
5376        // Add sufficient space for cursor and tone marks
5377        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5378        int fudgedPaddingRight = Math.max(0, compoundPaddingRight - (cursorWidth - 1));
5379
5380        float clipLeft = compoundPaddingLeft + scrollX;
5381        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5382        float clipRight = right - left - fudgedPaddingRight + scrollX;
5383        float clipBottom = bottom - top + scrollY -
5384                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5385
5386        if (mShadowRadius != 0) {
5387            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5388            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5389
5390            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5391            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5392        }
5393
5394        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5395
5396        int voffsetText = 0;
5397        int voffsetCursor = 0;
5398
5399        // translate in by our padding
5400        /* shortcircuit calling getVerticaOffset() */
5401        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5402            voffsetText = getVerticalOffset(false);
5403            voffsetCursor = getVerticalOffset(true);
5404        }
5405        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5406
5407        final int layoutDirection = getLayoutDirection();
5408        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5409        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5410                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5411            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5412                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5413                final int width = mRight - mLeft;
5414                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5415                final float dx = mLayout.getLineRight(0) - (width - padding);
5416                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5417            }
5418
5419            if (mMarquee != null && mMarquee.isRunning()) {
5420                final float dx = -mMarquee.getScroll();
5421                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5422            }
5423        }
5424
5425        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5426
5427        Path highlight = getUpdatedHighlightPath();
5428        if (mEditor != null) {
5429            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5430        } else {
5431            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5432        }
5433
5434        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5435            final float dx = mMarquee.getGhostOffset();
5436            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5437            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5438        }
5439
5440        canvas.restore();
5441    }
5442
5443    @Override
5444    public void getFocusedRect(Rect r) {
5445        if (mLayout == null) {
5446            super.getFocusedRect(r);
5447            return;
5448        }
5449
5450        int selEnd = getSelectionEnd();
5451        if (selEnd < 0) {
5452            super.getFocusedRect(r);
5453            return;
5454        }
5455
5456        int selStart = getSelectionStart();
5457        if (selStart < 0 || selStart >= selEnd) {
5458            int line = mLayout.getLineForOffset(selEnd);
5459            r.top = mLayout.getLineTop(line);
5460            r.bottom = mLayout.getLineBottom(line);
5461            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5462            r.right = r.left + 4;
5463        } else {
5464            int lineStart = mLayout.getLineForOffset(selStart);
5465            int lineEnd = mLayout.getLineForOffset(selEnd);
5466            r.top = mLayout.getLineTop(lineStart);
5467            r.bottom = mLayout.getLineBottom(lineEnd);
5468            if (lineStart == lineEnd) {
5469                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5470                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5471            } else {
5472                // Selection extends across multiple lines -- make the focused
5473                // rect cover the entire width.
5474                if (mHighlightPathBogus) {
5475                    if (mHighlightPath == null) mHighlightPath = new Path();
5476                    mHighlightPath.reset();
5477                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5478                    mHighlightPathBogus = false;
5479                }
5480                synchronized (TEMP_RECTF) {
5481                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5482                    r.left = (int)TEMP_RECTF.left-1;
5483                    r.right = (int)TEMP_RECTF.right+1;
5484                }
5485            }
5486        }
5487
5488        // Adjust for padding and gravity.
5489        int paddingLeft = getCompoundPaddingLeft();
5490        int paddingTop = getExtendedPaddingTop();
5491        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5492            paddingTop += getVerticalOffset(false);
5493        }
5494        r.offset(paddingLeft, paddingTop);
5495        int paddingBottom = getExtendedPaddingBottom();
5496        r.bottom += paddingBottom;
5497    }
5498
5499    /**
5500     * Return the number of lines of text, or 0 if the internal Layout has not
5501     * been built.
5502     */
5503    public int getLineCount() {
5504        return mLayout != null ? mLayout.getLineCount() : 0;
5505    }
5506
5507    /**
5508     * Return the baseline for the specified line (0...getLineCount() - 1)
5509     * If bounds is not null, return the top, left, right, bottom extents
5510     * of the specified line in it. If the internal Layout has not been built,
5511     * return 0 and set bounds to (0, 0, 0, 0)
5512     * @param line which line to examine (0..getLineCount() - 1)
5513     * @param bounds Optional. If not null, it returns the extent of the line
5514     * @return the Y-coordinate of the baseline
5515     */
5516    public int getLineBounds(int line, Rect bounds) {
5517        if (mLayout == null) {
5518            if (bounds != null) {
5519                bounds.set(0, 0, 0, 0);
5520            }
5521            return 0;
5522        }
5523        else {
5524            int baseline = mLayout.getLineBounds(line, bounds);
5525
5526            int voffset = getExtendedPaddingTop();
5527            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5528                voffset += getVerticalOffset(true);
5529            }
5530            if (bounds != null) {
5531                bounds.offset(getCompoundPaddingLeft(), voffset);
5532            }
5533            return baseline + voffset;
5534        }
5535    }
5536
5537    @Override
5538    public int getBaseline() {
5539        if (mLayout == null) {
5540            return super.getBaseline();
5541        }
5542
5543        int voffset = 0;
5544        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5545            voffset = getVerticalOffset(true);
5546        }
5547
5548        if (isLayoutModeOptical(mParent)) {
5549            voffset -= getOpticalInsets().top;
5550        }
5551
5552        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5553    }
5554
5555    /**
5556     * @hide
5557     */
5558    @Override
5559    protected int getFadeTop(boolean offsetRequired) {
5560        if (mLayout == null) return 0;
5561
5562        int voffset = 0;
5563        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5564            voffset = getVerticalOffset(true);
5565        }
5566
5567        if (offsetRequired) voffset += getTopPaddingOffset();
5568
5569        return getExtendedPaddingTop() + voffset;
5570    }
5571
5572    /**
5573     * @hide
5574     */
5575    @Override
5576    protected int getFadeHeight(boolean offsetRequired) {
5577        return mLayout != null ? mLayout.getHeight() : 0;
5578    }
5579
5580    @Override
5581    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5582        if (keyCode == KeyEvent.KEYCODE_BACK) {
5583            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5584
5585            if (isInSelectionMode) {
5586                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5587                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5588                    if (state != null) {
5589                        state.startTracking(event, this);
5590                    }
5591                    return true;
5592                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5593                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5594                    if (state != null) {
5595                        state.handleUpEvent(event);
5596                    }
5597                    if (event.isTracking() && !event.isCanceled()) {
5598                        stopSelectionActionMode();
5599                        return true;
5600                    }
5601                }
5602            }
5603        }
5604        return super.onKeyPreIme(keyCode, event);
5605    }
5606
5607    @Override
5608    public boolean onKeyDown(int keyCode, KeyEvent event) {
5609        int which = doKeyDown(keyCode, event, null);
5610        if (which == 0) {
5611            return super.onKeyDown(keyCode, event);
5612        }
5613
5614        return true;
5615    }
5616
5617    @Override
5618    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5619        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5620
5621        int which = doKeyDown(keyCode, down, event);
5622        if (which == 0) {
5623            // Go through default dispatching.
5624            return super.onKeyMultiple(keyCode, repeatCount, event);
5625        }
5626        if (which == -1) {
5627            // Consumed the whole thing.
5628            return true;
5629        }
5630
5631        repeatCount--;
5632
5633        // We are going to dispatch the remaining events to either the input
5634        // or movement method.  To do this, we will just send a repeated stream
5635        // of down and up events until we have done the complete repeatCount.
5636        // It would be nice if those interfaces had an onKeyMultiple() method,
5637        // but adding that is a more complicated change.
5638        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5639        if (which == 1) {
5640            // mEditor and mEditor.mInput are not null from doKeyDown
5641            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5642            while (--repeatCount > 0) {
5643                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5644                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5645            }
5646            hideErrorIfUnchanged();
5647
5648        } else if (which == 2) {
5649            // mMovement is not null from doKeyDown
5650            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5651            while (--repeatCount > 0) {
5652                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5653                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5654            }
5655        }
5656
5657        return true;
5658    }
5659
5660    /**
5661     * Returns true if pressing ENTER in this field advances focus instead
5662     * of inserting the character.  This is true mostly in single-line fields,
5663     * but also in mail addresses and subjects which will display on multiple
5664     * lines but where it doesn't make sense to insert newlines.
5665     */
5666    private boolean shouldAdvanceFocusOnEnter() {
5667        if (getKeyListener() == null) {
5668            return false;
5669        }
5670
5671        if (mSingleLine) {
5672            return true;
5673        }
5674
5675        if (mEditor != null &&
5676                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5677            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5678            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5679                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5680                return true;
5681            }
5682        }
5683
5684        return false;
5685    }
5686
5687    /**
5688     * Returns true if pressing TAB in this field advances focus instead
5689     * of inserting the character.  Insert tabs only in multi-line editors.
5690     */
5691    private boolean shouldAdvanceFocusOnTab() {
5692        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5693                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5694            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5695            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5696                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5697                return false;
5698            }
5699        }
5700        return true;
5701    }
5702
5703    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5704        if (!isEnabled()) {
5705            return 0;
5706        }
5707
5708        // If this is the initial keydown, we don't want to prevent a movement away from this view.
5709        // While this shouldn't be necessary because any time we're preventing default movement we
5710        // should be restricting the focus to remain within this view, thus we'll also receive
5711        // the key up event, occasionally key up events will get dropped and we don't want to
5712        // prevent the user from traversing out of this on the next key down.
5713        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5714            mPreventDefaultMovement = false;
5715        }
5716
5717        switch (keyCode) {
5718            case KeyEvent.KEYCODE_ENTER:
5719                if (event.hasNoModifiers()) {
5720                    // When mInputContentType is set, we know that we are
5721                    // running in a "modern" cupcake environment, so don't need
5722                    // to worry about the application trying to capture
5723                    // enter key events.
5724                    if (mEditor != null && mEditor.mInputContentType != null) {
5725                        // If there is an action listener, given them a
5726                        // chance to consume the event.
5727                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5728                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5729                                this, EditorInfo.IME_NULL, event)) {
5730                            mEditor.mInputContentType.enterDown = true;
5731                            // We are consuming the enter key for them.
5732                            return -1;
5733                        }
5734                    }
5735
5736                    // If our editor should move focus when enter is pressed, or
5737                    // this is a generated event from an IME action button, then
5738                    // don't let it be inserted into the text.
5739                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5740                            || shouldAdvanceFocusOnEnter()) {
5741                        if (hasOnClickListeners()) {
5742                            return 0;
5743                        }
5744                        return -1;
5745                    }
5746                }
5747                break;
5748
5749            case KeyEvent.KEYCODE_DPAD_CENTER:
5750                if (event.hasNoModifiers()) {
5751                    if (shouldAdvanceFocusOnEnter()) {
5752                        return 0;
5753                    }
5754                }
5755                break;
5756
5757            case KeyEvent.KEYCODE_TAB:
5758                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5759                    if (shouldAdvanceFocusOnTab()) {
5760                        return 0;
5761                    }
5762                }
5763                break;
5764
5765                // Has to be done on key down (and not on key up) to correctly be intercepted.
5766            case KeyEvent.KEYCODE_BACK:
5767                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5768                    stopSelectionActionMode();
5769                    return -1;
5770                }
5771                break;
5772        }
5773
5774        if (mEditor != null && mEditor.mKeyListener != null) {
5775            boolean doDown = true;
5776            if (otherEvent != null) {
5777                try {
5778                    beginBatchEdit();
5779                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5780                            otherEvent);
5781                    hideErrorIfUnchanged();
5782                    doDown = false;
5783                    if (handled) {
5784                        return -1;
5785                    }
5786                } catch (AbstractMethodError e) {
5787                    // onKeyOther was added after 1.0, so if it isn't
5788                    // implemented we need to try to dispatch as a regular down.
5789                } finally {
5790                    endBatchEdit();
5791                }
5792            }
5793
5794            if (doDown) {
5795                beginBatchEdit();
5796                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5797                        keyCode, event);
5798                endBatchEdit();
5799                hideErrorIfUnchanged();
5800                if (handled) return 1;
5801            }
5802        }
5803
5804        // bug 650865: sometimes we get a key event before a layout.
5805        // don't try to move around if we don't know the layout.
5806
5807        if (mMovement != null && mLayout != null) {
5808            boolean doDown = true;
5809            if (otherEvent != null) {
5810                try {
5811                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5812                            otherEvent);
5813                    doDown = false;
5814                    if (handled) {
5815                        return -1;
5816                    }
5817                } catch (AbstractMethodError e) {
5818                    // onKeyOther was added after 1.0, so if it isn't
5819                    // implemented we need to try to dispatch as a regular down.
5820                }
5821            }
5822            if (doDown) {
5823                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
5824                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5825                        mPreventDefaultMovement = true;
5826                    }
5827                    return 2;
5828                }
5829            }
5830        }
5831
5832        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ? -1 : 0;
5833    }
5834
5835    /**
5836     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5837     * can be recorded.
5838     * @hide
5839     */
5840    public void resetErrorChangedFlag() {
5841        /*
5842         * Keep track of what the error was before doing the input
5843         * so that if an input filter changed the error, we leave
5844         * that error showing.  Otherwise, we take down whatever
5845         * error was showing when the user types something.
5846         */
5847        if (mEditor != null) mEditor.mErrorWasChanged = false;
5848    }
5849
5850    /**
5851     * @hide
5852     */
5853    public void hideErrorIfUnchanged() {
5854        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5855            setError(null, null);
5856        }
5857    }
5858
5859    @Override
5860    public boolean onKeyUp(int keyCode, KeyEvent event) {
5861        if (!isEnabled()) {
5862            return super.onKeyUp(keyCode, event);
5863        }
5864
5865        if (!KeyEvent.isModifierKey(keyCode)) {
5866            mPreventDefaultMovement = false;
5867        }
5868
5869        switch (keyCode) {
5870            case KeyEvent.KEYCODE_DPAD_CENTER:
5871                if (event.hasNoModifiers()) {
5872                    /*
5873                     * If there is a click listener, just call through to
5874                     * super, which will invoke it.
5875                     *
5876                     * If there isn't a click listener, try to show the soft
5877                     * input method.  (It will also
5878                     * call performClick(), but that won't do anything in
5879                     * this case.)
5880                     */
5881                    if (!hasOnClickListeners()) {
5882                        if (mMovement != null && mText instanceof Editable
5883                                && mLayout != null && onCheckIsTextEditor()) {
5884                            InputMethodManager imm = InputMethodManager.peekInstance();
5885                            viewClicked(imm);
5886                            if (imm != null && getShowSoftInputOnFocus()) {
5887                                imm.showSoftInput(this, 0);
5888                            }
5889                        }
5890                    }
5891                }
5892                return super.onKeyUp(keyCode, event);
5893
5894            case KeyEvent.KEYCODE_ENTER:
5895                if (event.hasNoModifiers()) {
5896                    if (mEditor != null && mEditor.mInputContentType != null
5897                            && mEditor.mInputContentType.onEditorActionListener != null
5898                            && mEditor.mInputContentType.enterDown) {
5899                        mEditor.mInputContentType.enterDown = false;
5900                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5901                                this, EditorInfo.IME_NULL, event)) {
5902                            return true;
5903                        }
5904                    }
5905
5906                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5907                            || shouldAdvanceFocusOnEnter()) {
5908                        /*
5909                         * If there is a click listener, just call through to
5910                         * super, which will invoke it.
5911                         *
5912                         * If there isn't a click listener, try to advance focus,
5913                         * but still call through to super, which will reset the
5914                         * pressed state and longpress state.  (It will also
5915                         * call performClick(), but that won't do anything in
5916                         * this case.)
5917                         */
5918                        if (!hasOnClickListeners()) {
5919                            View v = focusSearch(FOCUS_DOWN);
5920
5921                            if (v != null) {
5922                                if (!v.requestFocus(FOCUS_DOWN)) {
5923                                    throw new IllegalStateException(
5924                                            "focus search returned a view " +
5925                                            "that wasn't able to take focus!");
5926                                }
5927
5928                                /*
5929                                 * Return true because we handled the key; super
5930                                 * will return false because there was no click
5931                                 * listener.
5932                                 */
5933                                super.onKeyUp(keyCode, event);
5934                                return true;
5935                            } else if ((event.getFlags()
5936                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5937                                // No target for next focus, but make sure the IME
5938                                // if this came from it.
5939                                InputMethodManager imm = InputMethodManager.peekInstance();
5940                                if (imm != null && imm.isActive(this)) {
5941                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5942                                }
5943                            }
5944                        }
5945                    }
5946                    return super.onKeyUp(keyCode, event);
5947                }
5948                break;
5949        }
5950
5951        if (mEditor != null && mEditor.mKeyListener != null)
5952            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5953                return true;
5954
5955        if (mMovement != null && mLayout != null)
5956            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5957                return true;
5958
5959        return super.onKeyUp(keyCode, event);
5960    }
5961
5962    @Override
5963    public boolean onCheckIsTextEditor() {
5964        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5965    }
5966
5967    @Override
5968    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5969        if (onCheckIsTextEditor() && isEnabled()) {
5970            mEditor.createInputMethodStateIfNeeded();
5971            outAttrs.inputType = getInputType();
5972            if (mEditor.mInputContentType != null) {
5973                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5974                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5975                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5976                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5977                outAttrs.extras = mEditor.mInputContentType.extras;
5978            } else {
5979                outAttrs.imeOptions = EditorInfo.IME_NULL;
5980            }
5981            if (focusSearch(FOCUS_DOWN) != null) {
5982                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5983            }
5984            if (focusSearch(FOCUS_UP) != null) {
5985                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5986            }
5987            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5988                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5989                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5990                    // An action has not been set, but the enter key will move to
5991                    // the next focus, so set the action to that.
5992                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5993                } else {
5994                    // An action has not been set, and there is no focus to move
5995                    // to, so let's just supply a "done" action.
5996                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5997                }
5998                if (!shouldAdvanceFocusOnEnter()) {
5999                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6000                }
6001            }
6002            if (isMultilineInputType(outAttrs.inputType)) {
6003                // Multi-line text editors should always show an enter key.
6004                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6005            }
6006            outAttrs.hintText = mHint;
6007            if (mText instanceof Editable) {
6008                InputConnection ic = new EditableInputConnection(this);
6009                outAttrs.initialSelStart = getSelectionStart();
6010                outAttrs.initialSelEnd = getSelectionEnd();
6011                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6012                return ic;
6013            }
6014        }
6015        return null;
6016    }
6017
6018    /**
6019     * If this TextView contains editable content, extract a portion of it
6020     * based on the information in <var>request</var> in to <var>outText</var>.
6021     * @return Returns true if the text was successfully extracted, else false.
6022     */
6023    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6024        createEditorIfNeeded();
6025        return mEditor.extractText(request, outText);
6026    }
6027
6028    /**
6029     * This is used to remove all style-impacting spans from text before new
6030     * extracted text is being replaced into it, so that we don't have any
6031     * lingering spans applied during the replace.
6032     */
6033    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6034        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6035        int i = spans.length;
6036        while (i > 0) {
6037            i--;
6038            spannable.removeSpan(spans[i]);
6039        }
6040    }
6041
6042    /**
6043     * Apply to this text view the given extracted text, as previously
6044     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6045     */
6046    public void setExtractedText(ExtractedText text) {
6047        Editable content = getEditableText();
6048        if (text.text != null) {
6049            if (content == null) {
6050                setText(text.text, TextView.BufferType.EDITABLE);
6051            } else if (text.partialStartOffset < 0) {
6052                removeParcelableSpans(content, 0, content.length());
6053                content.replace(0, content.length(), text.text);
6054            } else {
6055                final int N = content.length();
6056                int start = text.partialStartOffset;
6057                if (start > N) start = N;
6058                int end = text.partialEndOffset;
6059                if (end > N) end = N;
6060                removeParcelableSpans(content, start, end);
6061                content.replace(start, end, text.text);
6062            }
6063        }
6064
6065        // Now set the selection position...  make sure it is in range, to
6066        // avoid crashes.  If this is a partial update, it is possible that
6067        // the underlying text may have changed, causing us problems here.
6068        // Also we just don't want to trust clients to do the right thing.
6069        Spannable sp = (Spannable)getText();
6070        final int N = sp.length();
6071        int start = text.selectionStart;
6072        if (start < 0) start = 0;
6073        else if (start > N) start = N;
6074        int end = text.selectionEnd;
6075        if (end < 0) end = 0;
6076        else if (end > N) end = N;
6077        Selection.setSelection(sp, start, end);
6078
6079        // Finally, update the selection mode.
6080        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6081            MetaKeyKeyListener.startSelecting(this, sp);
6082        } else {
6083            MetaKeyKeyListener.stopSelecting(this, sp);
6084        }
6085    }
6086
6087    /**
6088     * @hide
6089     */
6090    public void setExtracting(ExtractedTextRequest req) {
6091        if (mEditor.mInputMethodState != null) {
6092            mEditor.mInputMethodState.mExtractedTextRequest = req;
6093        }
6094        // This would stop a possible selection mode, but no such mode is started in case
6095        // extracted mode will start. Some text is selected though, and will trigger an action mode
6096        // in the extracted view.
6097        mEditor.hideControllers();
6098    }
6099
6100    /**
6101     * Called by the framework in response to a text completion from
6102     * the current input method, provided by it calling
6103     * {@link InputConnection#commitCompletion
6104     * InputConnection.commitCompletion()}.  The default implementation does
6105     * nothing; text views that are supporting auto-completion should override
6106     * this to do their desired behavior.
6107     *
6108     * @param text The auto complete text the user has selected.
6109     */
6110    public void onCommitCompletion(CompletionInfo text) {
6111        // intentionally empty
6112    }
6113
6114    /**
6115     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6116     * a dictionnary) from the current input method, provided by it calling
6117     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6118     * implementation flashes the background of the corrected word to provide feedback to the user.
6119     *
6120     * @param info The auto correct info about the text that was corrected.
6121     */
6122    public void onCommitCorrection(CorrectionInfo info) {
6123        if (mEditor != null) mEditor.onCommitCorrection(info);
6124    }
6125
6126    public void beginBatchEdit() {
6127        if (mEditor != null) mEditor.beginBatchEdit();
6128    }
6129
6130    public void endBatchEdit() {
6131        if (mEditor != null) mEditor.endBatchEdit();
6132    }
6133
6134    /**
6135     * Called by the framework in response to a request to begin a batch
6136     * of edit operations through a call to link {@link #beginBatchEdit()}.
6137     */
6138    public void onBeginBatchEdit() {
6139        // intentionally empty
6140    }
6141
6142    /**
6143     * Called by the framework in response to a request to end a batch
6144     * of edit operations through a call to link {@link #endBatchEdit}.
6145     */
6146    public void onEndBatchEdit() {
6147        // intentionally empty
6148    }
6149
6150    /**
6151     * Called by the framework in response to a private command from the
6152     * current method, provided by it calling
6153     * {@link InputConnection#performPrivateCommand
6154     * InputConnection.performPrivateCommand()}.
6155     *
6156     * @param action The action name of the command.
6157     * @param data Any additional data for the command.  This may be null.
6158     * @return Return true if you handled the command, else false.
6159     */
6160    public boolean onPrivateIMECommand(String action, Bundle data) {
6161        return false;
6162    }
6163
6164    private void nullLayouts() {
6165        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6166            mSavedLayout = (BoringLayout) mLayout;
6167        }
6168        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6169            mSavedHintLayout = (BoringLayout) mHintLayout;
6170        }
6171
6172        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6173
6174        mBoring = mHintBoring = null;
6175
6176        // Since it depends on the value of mLayout
6177        if (mEditor != null) mEditor.prepareCursorControllers();
6178    }
6179
6180    /**
6181     * Make a new Layout based on the already-measured size of the view,
6182     * on the assumption that it was measured correctly at some point.
6183     */
6184    private void assumeLayout() {
6185        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6186
6187        if (width < 1) {
6188            width = 0;
6189        }
6190
6191        int physicalWidth = width;
6192
6193        if (mHorizontallyScrolling) {
6194            width = VERY_WIDE;
6195        }
6196
6197        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6198                      physicalWidth, false);
6199    }
6200
6201    private Layout.Alignment getLayoutAlignment() {
6202        Layout.Alignment alignment;
6203        switch (getTextAlignment()) {
6204            case TEXT_ALIGNMENT_GRAVITY:
6205                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6206                    case Gravity.START:
6207                        alignment = Layout.Alignment.ALIGN_NORMAL;
6208                        break;
6209                    case Gravity.END:
6210                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6211                        break;
6212                    case Gravity.LEFT:
6213                        alignment = Layout.Alignment.ALIGN_LEFT;
6214                        break;
6215                    case Gravity.RIGHT:
6216                        alignment = Layout.Alignment.ALIGN_RIGHT;
6217                        break;
6218                    case Gravity.CENTER_HORIZONTAL:
6219                        alignment = Layout.Alignment.ALIGN_CENTER;
6220                        break;
6221                    default:
6222                        alignment = Layout.Alignment.ALIGN_NORMAL;
6223                        break;
6224                }
6225                break;
6226            case TEXT_ALIGNMENT_TEXT_START:
6227                alignment = Layout.Alignment.ALIGN_NORMAL;
6228                break;
6229            case TEXT_ALIGNMENT_TEXT_END:
6230                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6231                break;
6232            case TEXT_ALIGNMENT_CENTER:
6233                alignment = Layout.Alignment.ALIGN_CENTER;
6234                break;
6235            case TEXT_ALIGNMENT_VIEW_START:
6236                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6237                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6238                break;
6239            case TEXT_ALIGNMENT_VIEW_END:
6240                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6241                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6242                break;
6243            case TEXT_ALIGNMENT_INHERIT:
6244                // This should never happen as we have already resolved the text alignment
6245                // but better safe than sorry so we just fall through
6246            default:
6247                alignment = Layout.Alignment.ALIGN_NORMAL;
6248                break;
6249        }
6250        return alignment;
6251    }
6252
6253    /**
6254     * The width passed in is now the desired layout width,
6255     * not the full view width with padding.
6256     * {@hide}
6257     */
6258    protected void makeNewLayout(int wantWidth, int hintWidth,
6259                                 BoringLayout.Metrics boring,
6260                                 BoringLayout.Metrics hintBoring,
6261                                 int ellipsisWidth, boolean bringIntoView) {
6262        stopMarquee();
6263
6264        // Update "old" cached values
6265        mOldMaximum = mMaximum;
6266        mOldMaxMode = mMaxMode;
6267
6268        mHighlightPathBogus = true;
6269
6270        if (wantWidth < 0) {
6271            wantWidth = 0;
6272        }
6273        if (hintWidth < 0) {
6274            hintWidth = 0;
6275        }
6276
6277        Layout.Alignment alignment = getLayoutAlignment();
6278        final boolean testDirChange = mSingleLine && mLayout != null &&
6279            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6280             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6281        int oldDir = 0;
6282        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6283        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6284        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6285                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6286        TruncateAt effectiveEllipsize = mEllipsize;
6287        if (mEllipsize == TruncateAt.MARQUEE &&
6288                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6289            effectiveEllipsize = TruncateAt.END_SMALL;
6290        }
6291
6292        if (mTextDir == null) {
6293            mTextDir = getTextDirectionHeuristic();
6294        }
6295
6296        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6297                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6298        if (switchEllipsize) {
6299            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6300                    TruncateAt.END : TruncateAt.MARQUEE;
6301            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6302                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6303        }
6304
6305        shouldEllipsize = mEllipsize != null;
6306        mHintLayout = null;
6307
6308        if (mHint != null) {
6309            if (shouldEllipsize) hintWidth = wantWidth;
6310
6311            if (hintBoring == UNKNOWN_BORING) {
6312                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6313                                                   mHintBoring);
6314                if (hintBoring != null) {
6315                    mHintBoring = hintBoring;
6316                }
6317            }
6318
6319            if (hintBoring != null) {
6320                if (hintBoring.width <= hintWidth &&
6321                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6322                    if (mSavedHintLayout != null) {
6323                        mHintLayout = mSavedHintLayout.
6324                                replaceOrMake(mHint, mTextPaint,
6325                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6326                                hintBoring, mIncludePad);
6327                    } else {
6328                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6329                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6330                                hintBoring, mIncludePad);
6331                    }
6332
6333                    mSavedHintLayout = (BoringLayout) mHintLayout;
6334                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6335                    if (mSavedHintLayout != null) {
6336                        mHintLayout = mSavedHintLayout.
6337                                replaceOrMake(mHint, mTextPaint,
6338                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6339                                hintBoring, mIncludePad, mEllipsize,
6340                                ellipsisWidth);
6341                    } else {
6342                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6343                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6344                                hintBoring, mIncludePad, mEllipsize,
6345                                ellipsisWidth);
6346                    }
6347                } else if (shouldEllipsize) {
6348                    mHintLayout = new StaticLayout(mHint,
6349                                0, mHint.length(),
6350                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
6351                                mSpacingAdd, mIncludePad, mEllipsize,
6352                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6353                } else {
6354                    mHintLayout = new StaticLayout(mHint, mTextPaint,
6355                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6356                            mIncludePad);
6357                }
6358            } else if (shouldEllipsize) {
6359                mHintLayout = new StaticLayout(mHint,
6360                            0, mHint.length(),
6361                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
6362                            mSpacingAdd, mIncludePad, mEllipsize,
6363                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6364            } else {
6365                mHintLayout = new StaticLayout(mHint, mTextPaint,
6366                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6367                        mIncludePad);
6368            }
6369        }
6370
6371        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6372            registerForPreDraw();
6373        }
6374
6375        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6376            if (!compressText(ellipsisWidth)) {
6377                final int height = mLayoutParams.height;
6378                // If the size of the view does not depend on the size of the text, try to
6379                // start the marquee immediately
6380                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6381                    startMarquee();
6382                } else {
6383                    // Defer the start of the marquee until we know our width (see setFrame())
6384                    mRestartMarquee = true;
6385                }
6386            }
6387        }
6388
6389        // CursorControllers need a non-null mLayout
6390        if (mEditor != null) mEditor.prepareCursorControllers();
6391    }
6392
6393    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6394            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6395            boolean useSaved) {
6396        Layout result = null;
6397        if (mText instanceof Spannable) {
6398            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6399                    alignment, mTextDir, mSpacingMult,
6400                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
6401                            ellipsisWidth);
6402        } else {
6403            if (boring == UNKNOWN_BORING) {
6404                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6405                if (boring != null) {
6406                    mBoring = boring;
6407                }
6408            }
6409
6410            if (boring != null) {
6411                if (boring.width <= wantWidth &&
6412                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6413                    if (useSaved && mSavedLayout != null) {
6414                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6415                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6416                                boring, mIncludePad);
6417                    } else {
6418                        result = BoringLayout.make(mTransformed, mTextPaint,
6419                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6420                                boring, mIncludePad);
6421                    }
6422
6423                    if (useSaved) {
6424                        mSavedLayout = (BoringLayout) result;
6425                    }
6426                } else if (shouldEllipsize && boring.width <= wantWidth) {
6427                    if (useSaved && mSavedLayout != null) {
6428                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6429                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6430                                boring, mIncludePad, effectiveEllipsize,
6431                                ellipsisWidth);
6432                    } else {
6433                        result = BoringLayout.make(mTransformed, mTextPaint,
6434                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6435                                boring, mIncludePad, effectiveEllipsize,
6436                                ellipsisWidth);
6437                    }
6438                } else if (shouldEllipsize) {
6439                    result = new StaticLayout(mTransformed,
6440                            0, mTransformed.length(),
6441                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6442                            mSpacingAdd, mIncludePad, effectiveEllipsize,
6443                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6444                } else {
6445                    result = new StaticLayout(mTransformed, mTextPaint,
6446                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6447                            mIncludePad);
6448                }
6449            } else if (shouldEllipsize) {
6450                result = new StaticLayout(mTransformed,
6451                        0, mTransformed.length(),
6452                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6453                        mSpacingAdd, mIncludePad, effectiveEllipsize,
6454                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6455            } else {
6456                result = new StaticLayout(mTransformed, mTextPaint,
6457                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6458                        mIncludePad);
6459            }
6460        }
6461        return result;
6462    }
6463
6464    private boolean compressText(float width) {
6465        if (isHardwareAccelerated()) return false;
6466
6467        // Only compress the text if it hasn't been compressed by the previous pass
6468        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6469                mTextPaint.getTextScaleX() == 1.0f) {
6470            final float textWidth = mLayout.getLineWidth(0);
6471            final float overflow = (textWidth + 1.0f - width) / width;
6472            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6473                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6474                post(new Runnable() {
6475                    public void run() {
6476                        requestLayout();
6477                    }
6478                });
6479                return true;
6480            }
6481        }
6482
6483        return false;
6484    }
6485
6486    private static int desired(Layout layout) {
6487        int n = layout.getLineCount();
6488        CharSequence text = layout.getText();
6489        float max = 0;
6490
6491        // if any line was wrapped, we can't use it.
6492        // but it's ok for the last line not to have a newline
6493
6494        for (int i = 0; i < n - 1; i++) {
6495            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6496                return -1;
6497        }
6498
6499        for (int i = 0; i < n; i++) {
6500            max = Math.max(max, layout.getLineWidth(i));
6501        }
6502
6503        return (int) FloatMath.ceil(max);
6504    }
6505
6506    /**
6507     * Set whether the TextView includes extra top and bottom padding to make
6508     * room for accents that go above the normal ascent and descent.
6509     * The default is true.
6510     *
6511     * @see #getIncludeFontPadding()
6512     *
6513     * @attr ref android.R.styleable#TextView_includeFontPadding
6514     */
6515    public void setIncludeFontPadding(boolean includepad) {
6516        if (mIncludePad != includepad) {
6517            mIncludePad = includepad;
6518
6519            if (mLayout != null) {
6520                nullLayouts();
6521                requestLayout();
6522                invalidate();
6523            }
6524        }
6525    }
6526
6527    /**
6528     * Gets whether the TextView includes extra top and bottom padding to make
6529     * room for accents that go above the normal ascent and descent.
6530     *
6531     * @see #setIncludeFontPadding(boolean)
6532     *
6533     * @attr ref android.R.styleable#TextView_includeFontPadding
6534     */
6535    public boolean getIncludeFontPadding() {
6536        return mIncludePad;
6537    }
6538
6539    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6540
6541    @Override
6542    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6543        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6544        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6545        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6546        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6547
6548        int width;
6549        int height;
6550
6551        BoringLayout.Metrics boring = UNKNOWN_BORING;
6552        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6553
6554        if (mTextDir == null) {
6555            mTextDir = getTextDirectionHeuristic();
6556        }
6557
6558        int des = -1;
6559        boolean fromexisting = false;
6560
6561        if (widthMode == MeasureSpec.EXACTLY) {
6562            // Parent has told us how big to be. So be it.
6563            width = widthSize;
6564        } else {
6565            if (mLayout != null && mEllipsize == null) {
6566                des = desired(mLayout);
6567            }
6568
6569            if (des < 0) {
6570                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6571                if (boring != null) {
6572                    mBoring = boring;
6573                }
6574            } else {
6575                fromexisting = true;
6576            }
6577
6578            if (boring == null || boring == UNKNOWN_BORING) {
6579                if (des < 0) {
6580                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6581                }
6582                width = des;
6583            } else {
6584                width = boring.width;
6585            }
6586
6587            final Drawables dr = mDrawables;
6588            if (dr != null) {
6589                width = Math.max(width, dr.mDrawableWidthTop);
6590                width = Math.max(width, dr.mDrawableWidthBottom);
6591            }
6592
6593            if (mHint != null) {
6594                int hintDes = -1;
6595                int hintWidth;
6596
6597                if (mHintLayout != null && mEllipsize == null) {
6598                    hintDes = desired(mHintLayout);
6599                }
6600
6601                if (hintDes < 0) {
6602                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6603                    if (hintBoring != null) {
6604                        mHintBoring = hintBoring;
6605                    }
6606                }
6607
6608                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6609                    if (hintDes < 0) {
6610                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6611                    }
6612                    hintWidth = hintDes;
6613                } else {
6614                    hintWidth = hintBoring.width;
6615                }
6616
6617                if (hintWidth > width) {
6618                    width = hintWidth;
6619                }
6620            }
6621
6622            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6623
6624            if (mMaxWidthMode == EMS) {
6625                width = Math.min(width, mMaxWidth * getLineHeight());
6626            } else {
6627                width = Math.min(width, mMaxWidth);
6628            }
6629
6630            if (mMinWidthMode == EMS) {
6631                width = Math.max(width, mMinWidth * getLineHeight());
6632            } else {
6633                width = Math.max(width, mMinWidth);
6634            }
6635
6636            // Check against our minimum width
6637            width = Math.max(width, getSuggestedMinimumWidth());
6638
6639            if (widthMode == MeasureSpec.AT_MOST) {
6640                width = Math.min(widthSize, width);
6641            }
6642        }
6643
6644        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6645        int unpaddedWidth = want;
6646
6647        if (mHorizontallyScrolling) want = VERY_WIDE;
6648
6649        int hintWant = want;
6650        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6651
6652        if (mLayout == null) {
6653            makeNewLayout(want, hintWant, boring, hintBoring,
6654                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6655        } else {
6656            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6657                    (hintWidth != hintWant) ||
6658                    (mLayout.getEllipsizedWidth() !=
6659                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6660
6661            final boolean widthChanged = (mHint == null) &&
6662                    (mEllipsize == null) &&
6663                    (want > mLayout.getWidth()) &&
6664                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6665
6666            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6667
6668            if (layoutChanged || maximumChanged) {
6669                if (!maximumChanged && widthChanged) {
6670                    mLayout.increaseWidthTo(want);
6671                } else {
6672                    makeNewLayout(want, hintWant, boring, hintBoring,
6673                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6674                }
6675            } else {
6676                // Nothing has changed
6677            }
6678        }
6679
6680        if (heightMode == MeasureSpec.EXACTLY) {
6681            // Parent has told us how big to be. So be it.
6682            height = heightSize;
6683            mDesiredHeightAtMeasure = -1;
6684        } else {
6685            int desired = getDesiredHeight();
6686
6687            height = desired;
6688            mDesiredHeightAtMeasure = desired;
6689
6690            if (heightMode == MeasureSpec.AT_MOST) {
6691                height = Math.min(desired, heightSize);
6692            }
6693        }
6694
6695        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6696        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6697            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6698        }
6699
6700        /*
6701         * We didn't let makeNewLayout() register to bring the cursor into view,
6702         * so do it here if there is any possibility that it is needed.
6703         */
6704        if (mMovement != null ||
6705            mLayout.getWidth() > unpaddedWidth ||
6706            mLayout.getHeight() > unpaddedHeight) {
6707            registerForPreDraw();
6708        } else {
6709            scrollTo(0, 0);
6710        }
6711
6712        setMeasuredDimension(width, height);
6713    }
6714
6715    private int getDesiredHeight() {
6716        return Math.max(
6717                getDesiredHeight(mLayout, true),
6718                getDesiredHeight(mHintLayout, mEllipsize != null));
6719    }
6720
6721    private int getDesiredHeight(Layout layout, boolean cap) {
6722        if (layout == null) {
6723            return 0;
6724        }
6725
6726        int linecount = layout.getLineCount();
6727        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6728        int desired = layout.getLineTop(linecount);
6729
6730        final Drawables dr = mDrawables;
6731        if (dr != null) {
6732            desired = Math.max(desired, dr.mDrawableHeightLeft);
6733            desired = Math.max(desired, dr.mDrawableHeightRight);
6734        }
6735
6736        desired += pad;
6737
6738        if (mMaxMode == LINES) {
6739            /*
6740             * Don't cap the hint to a certain number of lines.
6741             * (Do cap it, though, if we have a maximum pixel height.)
6742             */
6743            if (cap) {
6744                if (linecount > mMaximum) {
6745                    desired = layout.getLineTop(mMaximum);
6746
6747                    if (dr != null) {
6748                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6749                        desired = Math.max(desired, dr.mDrawableHeightRight);
6750                    }
6751
6752                    desired += pad;
6753                    linecount = mMaximum;
6754                }
6755            }
6756        } else {
6757            desired = Math.min(desired, mMaximum);
6758        }
6759
6760        if (mMinMode == LINES) {
6761            if (linecount < mMinimum) {
6762                desired += getLineHeight() * (mMinimum - linecount);
6763            }
6764        } else {
6765            desired = Math.max(desired, mMinimum);
6766        }
6767
6768        // Check against our minimum height
6769        desired = Math.max(desired, getSuggestedMinimumHeight());
6770
6771        return desired;
6772    }
6773
6774    /**
6775     * Check whether a change to the existing text layout requires a
6776     * new view layout.
6777     */
6778    private void checkForResize() {
6779        boolean sizeChanged = false;
6780
6781        if (mLayout != null) {
6782            // Check if our width changed
6783            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6784                sizeChanged = true;
6785                invalidate();
6786            }
6787
6788            // Check if our height changed
6789            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6790                int desiredHeight = getDesiredHeight();
6791
6792                if (desiredHeight != this.getHeight()) {
6793                    sizeChanged = true;
6794                }
6795            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6796                if (mDesiredHeightAtMeasure >= 0) {
6797                    int desiredHeight = getDesiredHeight();
6798
6799                    if (desiredHeight != mDesiredHeightAtMeasure) {
6800                        sizeChanged = true;
6801                    }
6802                }
6803            }
6804        }
6805
6806        if (sizeChanged) {
6807            requestLayout();
6808            // caller will have already invalidated
6809        }
6810    }
6811
6812    /**
6813     * Check whether entirely new text requires a new view layout
6814     * or merely a new text layout.
6815     */
6816    private void checkForRelayout() {
6817        // If we have a fixed width, we can just swap in a new text layout
6818        // if the text height stays the same or if the view height is fixed.
6819
6820        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6821                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6822                (mHint == null || mHintLayout != null) &&
6823                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6824            // Static width, so try making a new text layout.
6825
6826            int oldht = mLayout.getHeight();
6827            int want = mLayout.getWidth();
6828            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6829
6830            /*
6831             * No need to bring the text into view, since the size is not
6832             * changing (unless we do the requestLayout(), in which case it
6833             * will happen at measure).
6834             */
6835            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6836                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6837                          false);
6838
6839            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6840                // In a fixed-height view, so use our new text layout.
6841                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6842                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6843                    invalidate();
6844                    return;
6845                }
6846
6847                // Dynamic height, but height has stayed the same,
6848                // so use our new text layout.
6849                if (mLayout.getHeight() == oldht &&
6850                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6851                    invalidate();
6852                    return;
6853                }
6854            }
6855
6856            // We lose: the height has changed and we have a dynamic height.
6857            // Request a new view layout using our new text layout.
6858            requestLayout();
6859            invalidate();
6860        } else {
6861            // Dynamic width, so we have no choice but to request a new
6862            // view layout with a new text layout.
6863            nullLayouts();
6864            requestLayout();
6865            invalidate();
6866        }
6867    }
6868
6869    @Override
6870    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6871        super.onLayout(changed, left, top, right, bottom);
6872        if (mDeferScroll >= 0) {
6873            int curs = mDeferScroll;
6874            mDeferScroll = -1;
6875            bringPointIntoView(Math.min(curs, mText.length()));
6876        }
6877    }
6878
6879    private boolean isShowingHint() {
6880        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6881    }
6882
6883    /**
6884     * Returns true if anything changed.
6885     */
6886    private boolean bringTextIntoView() {
6887        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6888        int line = 0;
6889        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6890            line = layout.getLineCount() - 1;
6891        }
6892
6893        Layout.Alignment a = layout.getParagraphAlignment(line);
6894        int dir = layout.getParagraphDirection(line);
6895        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6896        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6897        int ht = layout.getHeight();
6898
6899        int scrollx, scrolly;
6900
6901        // Convert to left, center, or right alignment.
6902        if (a == Layout.Alignment.ALIGN_NORMAL) {
6903            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6904                Layout.Alignment.ALIGN_RIGHT;
6905        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6906            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6907                Layout.Alignment.ALIGN_LEFT;
6908        }
6909
6910        if (a == Layout.Alignment.ALIGN_CENTER) {
6911            /*
6912             * Keep centered if possible, or, if it is too wide to fit,
6913             * keep leading edge in view.
6914             */
6915
6916            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6917            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6918
6919            if (right - left < hspace) {
6920                scrollx = (right + left) / 2 - hspace / 2;
6921            } else {
6922                if (dir < 0) {
6923                    scrollx = right - hspace;
6924                } else {
6925                    scrollx = left;
6926                }
6927            }
6928        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6929            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6930            scrollx = right - hspace;
6931        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6932            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6933        }
6934
6935        if (ht < vspace) {
6936            scrolly = 0;
6937        } else {
6938            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6939                scrolly = ht - vspace;
6940            } else {
6941                scrolly = 0;
6942            }
6943        }
6944
6945        if (scrollx != mScrollX || scrolly != mScrollY) {
6946            scrollTo(scrollx, scrolly);
6947            return true;
6948        } else {
6949            return false;
6950        }
6951    }
6952
6953    /**
6954     * Move the point, specified by the offset, into the view if it is needed.
6955     * This has to be called after layout. Returns true if anything changed.
6956     */
6957    public boolean bringPointIntoView(int offset) {
6958        if (isLayoutRequested()) {
6959            mDeferScroll = offset;
6960            return false;
6961        }
6962        boolean changed = false;
6963
6964        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6965
6966        if (layout == null) return changed;
6967
6968        int line = layout.getLineForOffset(offset);
6969
6970        int grav;
6971
6972        switch (layout.getParagraphAlignment(line)) {
6973            case ALIGN_LEFT:
6974                grav = 1;
6975                break;
6976            case ALIGN_RIGHT:
6977                grav = -1;
6978                break;
6979            case ALIGN_NORMAL:
6980                grav = layout.getParagraphDirection(line);
6981                break;
6982            case ALIGN_OPPOSITE:
6983                grav = -layout.getParagraphDirection(line);
6984                break;
6985            case ALIGN_CENTER:
6986            default:
6987                grav = 0;
6988                break;
6989        }
6990
6991        // We only want to clamp the cursor to fit within the layout width
6992        // in left-to-right modes, because in a right to left alignment,
6993        // we want to scroll to keep the line-right on the screen, as other
6994        // lines are likely to have text flush with the right margin, which
6995        // we want to keep visible.
6996        // A better long-term solution would probably be to measure both
6997        // the full line and a blank-trimmed version, and, for example, use
6998        // the latter measurement for centering and right alignment, but for
6999        // the time being we only implement the cursor clamping in left to
7000        // right where it is most likely to be annoying.
7001        final boolean clamped = grav > 0;
7002        // FIXME: Is it okay to truncate this, or should we round?
7003        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7004        final int top = layout.getLineTop(line);
7005        final int bottom = layout.getLineTop(line + 1);
7006
7007        int left = (int) FloatMath.floor(layout.getLineLeft(line));
7008        int right = (int) FloatMath.ceil(layout.getLineRight(line));
7009        int ht = layout.getHeight();
7010
7011        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7012        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7013        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7014            // If cursor has been clamped, make sure we don't scroll.
7015            right = Math.max(x, left + hspace);
7016        }
7017
7018        int hslack = (bottom - top) / 2;
7019        int vslack = hslack;
7020
7021        if (vslack > vspace / 4)
7022            vslack = vspace / 4;
7023        if (hslack > hspace / 4)
7024            hslack = hspace / 4;
7025
7026        int hs = mScrollX;
7027        int vs = mScrollY;
7028
7029        if (top - vs < vslack)
7030            vs = top - vslack;
7031        if (bottom - vs > vspace - vslack)
7032            vs = bottom - (vspace - vslack);
7033        if (ht - vs < vspace)
7034            vs = ht - vspace;
7035        if (0 - vs > 0)
7036            vs = 0;
7037
7038        if (grav != 0) {
7039            if (x - hs < hslack) {
7040                hs = x - hslack;
7041            }
7042            if (x - hs > hspace - hslack) {
7043                hs = x - (hspace - hslack);
7044            }
7045        }
7046
7047        if (grav < 0) {
7048            if (left - hs > 0)
7049                hs = left;
7050            if (right - hs < hspace)
7051                hs = right - hspace;
7052        } else if (grav > 0) {
7053            if (right - hs < hspace)
7054                hs = right - hspace;
7055            if (left - hs > 0)
7056                hs = left;
7057        } else /* grav == 0 */ {
7058            if (right - left <= hspace) {
7059                /*
7060                 * If the entire text fits, center it exactly.
7061                 */
7062                hs = left - (hspace - (right - left)) / 2;
7063            } else if (x > right - hslack) {
7064                /*
7065                 * If we are near the right edge, keep the right edge
7066                 * at the edge of the view.
7067                 */
7068                hs = right - hspace;
7069            } else if (x < left + hslack) {
7070                /*
7071                 * If we are near the left edge, keep the left edge
7072                 * at the edge of the view.
7073                 */
7074                hs = left;
7075            } else if (left > hs) {
7076                /*
7077                 * Is there whitespace visible at the left?  Fix it if so.
7078                 */
7079                hs = left;
7080            } else if (right < hs + hspace) {
7081                /*
7082                 * Is there whitespace visible at the right?  Fix it if so.
7083                 */
7084                hs = right - hspace;
7085            } else {
7086                /*
7087                 * Otherwise, float as needed.
7088                 */
7089                if (x - hs < hslack) {
7090                    hs = x - hslack;
7091                }
7092                if (x - hs > hspace - hslack) {
7093                    hs = x - (hspace - hslack);
7094                }
7095            }
7096        }
7097
7098        if (hs != mScrollX || vs != mScrollY) {
7099            if (mScroller == null) {
7100                scrollTo(hs, vs);
7101            } else {
7102                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7103                int dx = hs - mScrollX;
7104                int dy = vs - mScrollY;
7105
7106                if (duration > ANIMATED_SCROLL_GAP) {
7107                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7108                    awakenScrollBars(mScroller.getDuration());
7109                    invalidate();
7110                } else {
7111                    if (!mScroller.isFinished()) {
7112                        mScroller.abortAnimation();
7113                    }
7114
7115                    scrollBy(dx, dy);
7116                }
7117
7118                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7119            }
7120
7121            changed = true;
7122        }
7123
7124        if (isFocused()) {
7125            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7126            // requestRectangleOnScreen() is in terms of content coordinates.
7127
7128            // The offsets here are to ensure the rectangle we are using is
7129            // within our view bounds, in case the cursor is on the far left
7130            // or right.  If it isn't withing the bounds, then this request
7131            // will be ignored.
7132            if (mTempRect == null) mTempRect = new Rect();
7133            mTempRect.set(x - 2, top, x + 2, bottom);
7134            getInterestingRect(mTempRect, line);
7135            mTempRect.offset(mScrollX, mScrollY);
7136
7137            if (requestRectangleOnScreen(mTempRect)) {
7138                changed = true;
7139            }
7140        }
7141
7142        return changed;
7143    }
7144
7145    /**
7146     * Move the cursor, if needed, so that it is at an offset that is visible
7147     * to the user.  This will not move the cursor if it represents more than
7148     * one character (a selection range).  This will only work if the
7149     * TextView contains spannable text; otherwise it will do nothing.
7150     *
7151     * @return True if the cursor was actually moved, false otherwise.
7152     */
7153    public boolean moveCursorToVisibleOffset() {
7154        if (!(mText instanceof Spannable)) {
7155            return false;
7156        }
7157        int start = getSelectionStart();
7158        int end = getSelectionEnd();
7159        if (start != end) {
7160            return false;
7161        }
7162
7163        // First: make sure the line is visible on screen:
7164
7165        int line = mLayout.getLineForOffset(start);
7166
7167        final int top = mLayout.getLineTop(line);
7168        final int bottom = mLayout.getLineTop(line + 1);
7169        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7170        int vslack = (bottom - top) / 2;
7171        if (vslack > vspace / 4)
7172            vslack = vspace / 4;
7173        final int vs = mScrollY;
7174
7175        if (top < (vs+vslack)) {
7176            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7177        } else if (bottom > (vspace+vs-vslack)) {
7178            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7179        }
7180
7181        // Next: make sure the character is visible on screen:
7182
7183        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7184        final int hs = mScrollX;
7185        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7186        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7187
7188        // line might contain bidirectional text
7189        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7190        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7191
7192        int newStart = start;
7193        if (newStart < lowChar) {
7194            newStart = lowChar;
7195        } else if (newStart > highChar) {
7196            newStart = highChar;
7197        }
7198
7199        if (newStart != start) {
7200            Selection.setSelection((Spannable)mText, newStart);
7201            return true;
7202        }
7203
7204        return false;
7205    }
7206
7207    @Override
7208    public void computeScroll() {
7209        if (mScroller != null) {
7210            if (mScroller.computeScrollOffset()) {
7211                mScrollX = mScroller.getCurrX();
7212                mScrollY = mScroller.getCurrY();
7213                invalidateParentCaches();
7214                postInvalidate();  // So we draw again
7215            }
7216        }
7217    }
7218
7219    private void getInterestingRect(Rect r, int line) {
7220        convertFromViewportToContentCoordinates(r);
7221
7222        // Rectangle can can be expanded on first and last line to take
7223        // padding into account.
7224        // TODO Take left/right padding into account too?
7225        if (line == 0) r.top -= getExtendedPaddingTop();
7226        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7227    }
7228
7229    private void convertFromViewportToContentCoordinates(Rect r) {
7230        final int horizontalOffset = viewportToContentHorizontalOffset();
7231        r.left += horizontalOffset;
7232        r.right += horizontalOffset;
7233
7234        final int verticalOffset = viewportToContentVerticalOffset();
7235        r.top += verticalOffset;
7236        r.bottom += verticalOffset;
7237    }
7238
7239    int viewportToContentHorizontalOffset() {
7240        return getCompoundPaddingLeft() - mScrollX;
7241    }
7242
7243    int viewportToContentVerticalOffset() {
7244        int offset = getExtendedPaddingTop() - mScrollY;
7245        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7246            offset += getVerticalOffset(false);
7247        }
7248        return offset;
7249    }
7250
7251    @Override
7252    public void debug(int depth) {
7253        super.debug(depth);
7254
7255        String output = debugIndent(depth);
7256        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7257                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7258                + "} ";
7259
7260        if (mText != null) {
7261
7262            output += "mText=\"" + mText + "\" ";
7263            if (mLayout != null) {
7264                output += "mLayout width=" + mLayout.getWidth()
7265                        + " height=" + mLayout.getHeight();
7266            }
7267        } else {
7268            output += "mText=NULL";
7269        }
7270        Log.d(VIEW_LOG_TAG, output);
7271    }
7272
7273    /**
7274     * Convenience for {@link Selection#getSelectionStart}.
7275     */
7276    @ViewDebug.ExportedProperty(category = "text")
7277    public int getSelectionStart() {
7278        return Selection.getSelectionStart(getText());
7279    }
7280
7281    /**
7282     * Convenience for {@link Selection#getSelectionEnd}.
7283     */
7284    @ViewDebug.ExportedProperty(category = "text")
7285    public int getSelectionEnd() {
7286        return Selection.getSelectionEnd(getText());
7287    }
7288
7289    /**
7290     * Return true iff there is a selection inside this text view.
7291     */
7292    public boolean hasSelection() {
7293        final int selectionStart = getSelectionStart();
7294        final int selectionEnd = getSelectionEnd();
7295
7296        return selectionStart >= 0 && selectionStart != selectionEnd;
7297    }
7298
7299    /**
7300     * Sets the properties of this field (lines, horizontally scrolling,
7301     * transformation method) to be for a single-line input.
7302     *
7303     * @attr ref android.R.styleable#TextView_singleLine
7304     */
7305    public void setSingleLine() {
7306        setSingleLine(true);
7307    }
7308
7309    /**
7310     * Sets the properties of this field to transform input to ALL CAPS
7311     * display. This may use a "small caps" formatting if available.
7312     * This setting will be ignored if this field is editable or selectable.
7313     *
7314     * This call replaces the current transformation method. Disabling this
7315     * will not necessarily restore the previous behavior from before this
7316     * was enabled.
7317     *
7318     * @see #setTransformationMethod(TransformationMethod)
7319     * @attr ref android.R.styleable#TextView_textAllCaps
7320     */
7321    public void setAllCaps(boolean allCaps) {
7322        if (allCaps) {
7323            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7324        } else {
7325            setTransformationMethod(null);
7326        }
7327    }
7328
7329    /**
7330     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7331     * transformation method) to be for a single-line input; if false, restores these to the default
7332     * conditions.
7333     *
7334     * Note that the default conditions are not necessarily those that were in effect prior this
7335     * method, and you may want to reset these properties to your custom values.
7336     *
7337     * @attr ref android.R.styleable#TextView_singleLine
7338     */
7339    @android.view.RemotableViewMethod
7340    public void setSingleLine(boolean singleLine) {
7341        // Could be used, but may break backward compatibility.
7342        // if (mSingleLine == singleLine) return;
7343        setInputTypeSingleLine(singleLine);
7344        applySingleLine(singleLine, true, true);
7345    }
7346
7347    /**
7348     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7349     * @param singleLine
7350     */
7351    private void setInputTypeSingleLine(boolean singleLine) {
7352        if (mEditor != null &&
7353                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7354            if (singleLine) {
7355                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7356            } else {
7357                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7358            }
7359        }
7360    }
7361
7362    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7363            boolean changeMaxLines) {
7364        mSingleLine = singleLine;
7365        if (singleLine) {
7366            setLines(1);
7367            setHorizontallyScrolling(true);
7368            if (applyTransformation) {
7369                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7370            }
7371        } else {
7372            if (changeMaxLines) {
7373                setMaxLines(Integer.MAX_VALUE);
7374            }
7375            setHorizontallyScrolling(false);
7376            if (applyTransformation) {
7377                setTransformationMethod(null);
7378            }
7379        }
7380    }
7381
7382    /**
7383     * Causes words in the text that are longer than the view is wide
7384     * to be ellipsized instead of broken in the middle.  You may also
7385     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7386     * to constrain the text to a single line.  Use <code>null</code>
7387     * to turn off ellipsizing.
7388     *
7389     * If {@link #setMaxLines} has been used to set two or more lines,
7390     * only {@link android.text.TextUtils.TruncateAt#END} and
7391     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7392     * (other ellipsizing types will not do anything).
7393     *
7394     * @attr ref android.R.styleable#TextView_ellipsize
7395     */
7396    public void setEllipsize(TextUtils.TruncateAt where) {
7397        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7398        if (mEllipsize != where) {
7399            mEllipsize = where;
7400
7401            if (mLayout != null) {
7402                nullLayouts();
7403                requestLayout();
7404                invalidate();
7405            }
7406        }
7407    }
7408
7409    /**
7410     * Sets how many times to repeat the marquee animation. Only applied if the
7411     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7412     *
7413     * @see #getMarqueeRepeatLimit()
7414     *
7415     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7416     */
7417    public void setMarqueeRepeatLimit(int marqueeLimit) {
7418        mMarqueeRepeatLimit = marqueeLimit;
7419    }
7420
7421    /**
7422     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7423     * TextView has marquee enabled.
7424     *
7425     * @return the number of times the marquee animation is repeated. -1 if the animation
7426     * repeats indefinitely
7427     *
7428     * @see #setMarqueeRepeatLimit(int)
7429     *
7430     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7431     */
7432    public int getMarqueeRepeatLimit() {
7433        return mMarqueeRepeatLimit;
7434    }
7435
7436    /**
7437     * Returns where, if anywhere, words that are longer than the view
7438     * is wide should be ellipsized.
7439     */
7440    @ViewDebug.ExportedProperty
7441    public TextUtils.TruncateAt getEllipsize() {
7442        return mEllipsize;
7443    }
7444
7445    /**
7446     * Set the TextView so that when it takes focus, all the text is
7447     * selected.
7448     *
7449     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7450     */
7451    @android.view.RemotableViewMethod
7452    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7453        createEditorIfNeeded();
7454        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7455
7456        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7457            setText(mText, BufferType.SPANNABLE);
7458        }
7459    }
7460
7461    /**
7462     * Set whether the cursor is visible. The default is true. Note that this property only
7463     * makes sense for editable TextView.
7464     *
7465     * @see #isCursorVisible()
7466     *
7467     * @attr ref android.R.styleable#TextView_cursorVisible
7468     */
7469    @android.view.RemotableViewMethod
7470    public void setCursorVisible(boolean visible) {
7471        if (visible && mEditor == null) return; // visible is the default value with no edit data
7472        createEditorIfNeeded();
7473        if (mEditor.mCursorVisible != visible) {
7474            mEditor.mCursorVisible = visible;
7475            invalidate();
7476
7477            mEditor.makeBlink();
7478
7479            // InsertionPointCursorController depends on mCursorVisible
7480            mEditor.prepareCursorControllers();
7481        }
7482    }
7483
7484    /**
7485     * @return whether or not the cursor is visible (assuming this TextView is editable)
7486     *
7487     * @see #setCursorVisible(boolean)
7488     *
7489     * @attr ref android.R.styleable#TextView_cursorVisible
7490     */
7491    public boolean isCursorVisible() {
7492        // true is the default value
7493        return mEditor == null ? true : mEditor.mCursorVisible;
7494    }
7495
7496    private boolean canMarquee() {
7497        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7498        return width > 0 && (mLayout.getLineWidth(0) > width ||
7499                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7500                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7501    }
7502
7503    private void startMarquee() {
7504        // Do not ellipsize EditText
7505        if (getKeyListener() != null) return;
7506
7507        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7508            return;
7509        }
7510
7511        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7512                getLineCount() == 1 && canMarquee()) {
7513
7514            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7515                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7516                final Layout tmp = mLayout;
7517                mLayout = mSavedMarqueeModeLayout;
7518                mSavedMarqueeModeLayout = tmp;
7519                setHorizontalFadingEdgeEnabled(true);
7520                requestLayout();
7521                invalidate();
7522            }
7523
7524            if (mMarquee == null) mMarquee = new Marquee(this);
7525            mMarquee.start(mMarqueeRepeatLimit);
7526        }
7527    }
7528
7529    private void stopMarquee() {
7530        if (mMarquee != null && !mMarquee.isStopped()) {
7531            mMarquee.stop();
7532        }
7533
7534        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7535            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7536            final Layout tmp = mSavedMarqueeModeLayout;
7537            mSavedMarqueeModeLayout = mLayout;
7538            mLayout = tmp;
7539            setHorizontalFadingEdgeEnabled(false);
7540            requestLayout();
7541            invalidate();
7542        }
7543    }
7544
7545    private void startStopMarquee(boolean start) {
7546        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7547            if (start) {
7548                startMarquee();
7549            } else {
7550                stopMarquee();
7551            }
7552        }
7553    }
7554
7555    /**
7556     * This method is called when the text is changed, in case any subclasses
7557     * would like to know.
7558     *
7559     * Within <code>text</code>, the <code>lengthAfter</code> characters
7560     * beginning at <code>start</code> have just replaced old text that had
7561     * length <code>lengthBefore</code>. It is an error to attempt to make
7562     * changes to <code>text</code> from this callback.
7563     *
7564     * @param text The text the TextView is displaying
7565     * @param start The offset of the start of the range of the text that was
7566     * modified
7567     * @param lengthBefore The length of the former text that has been replaced
7568     * @param lengthAfter The length of the replacement modified text
7569     */
7570    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7571        // intentionally empty, template pattern method can be overridden by subclasses
7572    }
7573
7574    /**
7575     * This method is called when the selection has changed, in case any
7576     * subclasses would like to know.
7577     *
7578     * @param selStart The new selection start location.
7579     * @param selEnd The new selection end location.
7580     */
7581    protected void onSelectionChanged(int selStart, int selEnd) {
7582        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7583    }
7584
7585    /**
7586     * Adds a TextWatcher to the list of those whose methods are called
7587     * whenever this TextView's text changes.
7588     * <p>
7589     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7590     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7591     * if there are any text changed listeners forces the buffer type to
7592     * Editable if it would not otherwise be and does call this method.
7593     */
7594    public void addTextChangedListener(TextWatcher watcher) {
7595        if (mListeners == null) {
7596            mListeners = new ArrayList<TextWatcher>();
7597        }
7598
7599        mListeners.add(watcher);
7600    }
7601
7602    /**
7603     * Removes the specified TextWatcher from the list of those whose
7604     * methods are called
7605     * whenever this TextView's text changes.
7606     */
7607    public void removeTextChangedListener(TextWatcher watcher) {
7608        if (mListeners != null) {
7609            int i = mListeners.indexOf(watcher);
7610
7611            if (i >= 0) {
7612                mListeners.remove(i);
7613            }
7614        }
7615    }
7616
7617    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7618        if (mListeners != null) {
7619            final ArrayList<TextWatcher> list = mListeners;
7620            final int count = list.size();
7621            for (int i = 0; i < count; i++) {
7622                list.get(i).beforeTextChanged(text, start, before, after);
7623            }
7624        }
7625
7626        // The spans that are inside or intersect the modified region no longer make sense
7627        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
7628        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
7629    }
7630
7631    // Removes all spans that are inside or actually overlap the start..end range
7632    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
7633        if (!(mText instanceof Editable)) return;
7634        Editable text = (Editable) mText;
7635
7636        T[] spans = text.getSpans(start, end, type);
7637        final int length = spans.length;
7638        for (int i = 0; i < length; i++) {
7639            final int spanStart = text.getSpanStart(spans[i]);
7640            final int spanEnd = text.getSpanEnd(spans[i]);
7641            if (spanEnd == start || spanStart == end) break;
7642            text.removeSpan(spans[i]);
7643        }
7644    }
7645
7646    void removeAdjacentSuggestionSpans(final int pos) {
7647        if (!(mText instanceof Editable)) return;
7648        final Editable text = (Editable) mText;
7649
7650        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
7651        final int length = spans.length;
7652        for (int i = 0; i < length; i++) {
7653            final int spanStart = text.getSpanStart(spans[i]);
7654            final int spanEnd = text.getSpanEnd(spans[i]);
7655            if (spanEnd == pos || spanStart == pos) {
7656                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
7657                    text.removeSpan(spans[i]);
7658                }
7659            }
7660        }
7661    }
7662
7663    /**
7664     * Not private so it can be called from an inner class without going
7665     * through a thunk.
7666     */
7667    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7668        if (mListeners != null) {
7669            final ArrayList<TextWatcher> list = mListeners;
7670            final int count = list.size();
7671            for (int i = 0; i < count; i++) {
7672                list.get(i).onTextChanged(text, start, before, after);
7673            }
7674        }
7675
7676        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7677    }
7678
7679    /**
7680     * Not private so it can be called from an inner class without going
7681     * through a thunk.
7682     */
7683    void sendAfterTextChanged(Editable text) {
7684        if (mListeners != null) {
7685            final ArrayList<TextWatcher> list = mListeners;
7686            final int count = list.size();
7687            for (int i = 0; i < count; i++) {
7688                list.get(i).afterTextChanged(text);
7689            }
7690        }
7691        hideErrorIfUnchanged();
7692    }
7693
7694    void updateAfterEdit() {
7695        invalidate();
7696        int curs = getSelectionStart();
7697
7698        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7699            registerForPreDraw();
7700        }
7701
7702        checkForResize();
7703
7704        if (curs >= 0) {
7705            mHighlightPathBogus = true;
7706            if (mEditor != null) mEditor.makeBlink();
7707            bringPointIntoView(curs);
7708        }
7709    }
7710
7711    /**
7712     * Not private so it can be called from an inner class without going
7713     * through a thunk.
7714     */
7715    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7716        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7717        if (ims == null || ims.mBatchEditNesting == 0) {
7718            updateAfterEdit();
7719        }
7720        if (ims != null) {
7721            ims.mContentChanged = true;
7722            if (ims.mChangedStart < 0) {
7723                ims.mChangedStart = start;
7724                ims.mChangedEnd = start+before;
7725            } else {
7726                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7727                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7728            }
7729            ims.mChangedDelta += after-before;
7730        }
7731        resetErrorChangedFlag();
7732        sendOnTextChanged(buffer, start, before, after);
7733        onTextChanged(buffer, start, before, after);
7734    }
7735
7736    /**
7737     * Not private so it can be called from an inner class without going
7738     * through a thunk.
7739     */
7740    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7741        // XXX Make the start and end move together if this ends up
7742        // spending too much time invalidating.
7743
7744        boolean selChanged = false;
7745        int newSelStart=-1, newSelEnd=-1;
7746
7747        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7748
7749        if (what == Selection.SELECTION_END) {
7750            selChanged = true;
7751            newSelEnd = newStart;
7752
7753            if (oldStart >= 0 || newStart >= 0) {
7754                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7755                checkForResize();
7756                registerForPreDraw();
7757                if (mEditor != null) mEditor.makeBlink();
7758            }
7759        }
7760
7761        if (what == Selection.SELECTION_START) {
7762            selChanged = true;
7763            newSelStart = newStart;
7764
7765            if (oldStart >= 0 || newStart >= 0) {
7766                int end = Selection.getSelectionEnd(buf);
7767                invalidateCursor(end, oldStart, newStart);
7768            }
7769        }
7770
7771        if (selChanged) {
7772            mHighlightPathBogus = true;
7773            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7774
7775            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7776                if (newSelStart < 0) {
7777                    newSelStart = Selection.getSelectionStart(buf);
7778                }
7779                if (newSelEnd < 0) {
7780                    newSelEnd = Selection.getSelectionEnd(buf);
7781                }
7782                onSelectionChanged(newSelStart, newSelEnd);
7783            }
7784        }
7785
7786        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7787                what instanceof CharacterStyle) {
7788            if (ims == null || ims.mBatchEditNesting == 0) {
7789                invalidate();
7790                mHighlightPathBogus = true;
7791                checkForResize();
7792            } else {
7793                ims.mContentChanged = true;
7794            }
7795            if (mEditor != null) {
7796                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7797                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7798            }
7799        }
7800
7801        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7802            mHighlightPathBogus = true;
7803            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7804                ims.mSelectionModeChanged = true;
7805            }
7806
7807            if (Selection.getSelectionStart(buf) >= 0) {
7808                if (ims == null || ims.mBatchEditNesting == 0) {
7809                    invalidateCursor();
7810                } else {
7811                    ims.mCursorChanged = true;
7812                }
7813            }
7814        }
7815
7816        if (what instanceof ParcelableSpan) {
7817            // If this is a span that can be sent to a remote process,
7818            // the current extract editor would be interested in it.
7819            if (ims != null && ims.mExtractedTextRequest != null) {
7820                if (ims.mBatchEditNesting != 0) {
7821                    if (oldStart >= 0) {
7822                        if (ims.mChangedStart > oldStart) {
7823                            ims.mChangedStart = oldStart;
7824                        }
7825                        if (ims.mChangedStart > oldEnd) {
7826                            ims.mChangedStart = oldEnd;
7827                        }
7828                    }
7829                    if (newStart >= 0) {
7830                        if (ims.mChangedStart > newStart) {
7831                            ims.mChangedStart = newStart;
7832                        }
7833                        if (ims.mChangedStart > newEnd) {
7834                            ims.mChangedStart = newEnd;
7835                        }
7836                    }
7837                } else {
7838                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7839                            + oldStart + "-" + oldEnd + ","
7840                            + newStart + "-" + newEnd + " " + what);
7841                    ims.mContentChanged = true;
7842                }
7843            }
7844        }
7845
7846        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7847                what instanceof SpellCheckSpan) {
7848            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7849        }
7850    }
7851
7852    /**
7853     * @hide
7854     */
7855    @Override
7856    public void dispatchFinishTemporaryDetach() {
7857        mDispatchTemporaryDetach = true;
7858        super.dispatchFinishTemporaryDetach();
7859        mDispatchTemporaryDetach = false;
7860    }
7861
7862    @Override
7863    public void onStartTemporaryDetach() {
7864        super.onStartTemporaryDetach();
7865        // Only track when onStartTemporaryDetach() is called directly,
7866        // usually because this instance is an editable field in a list
7867        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7868
7869        // Tell the editor that we are temporarily detached. It can use this to preserve
7870        // selection state as needed.
7871        if (mEditor != null) mEditor.mTemporaryDetach = true;
7872    }
7873
7874    @Override
7875    public void onFinishTemporaryDetach() {
7876        super.onFinishTemporaryDetach();
7877        // Only track when onStartTemporaryDetach() is called directly,
7878        // usually because this instance is an editable field in a list
7879        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7880        if (mEditor != null) mEditor.mTemporaryDetach = false;
7881    }
7882
7883    @Override
7884    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7885        if (mTemporaryDetach) {
7886            // If we are temporarily in the detach state, then do nothing.
7887            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7888            return;
7889        }
7890
7891        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7892
7893        if (focused) {
7894            if (mText instanceof Spannable) {
7895                Spannable sp = (Spannable) mText;
7896                MetaKeyKeyListener.resetMetaState(sp);
7897            }
7898        }
7899
7900        startStopMarquee(focused);
7901
7902        if (mTransformation != null) {
7903            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7904        }
7905
7906        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7907    }
7908
7909    @Override
7910    public void onWindowFocusChanged(boolean hasWindowFocus) {
7911        super.onWindowFocusChanged(hasWindowFocus);
7912
7913        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7914
7915        startStopMarquee(hasWindowFocus);
7916    }
7917
7918    @Override
7919    protected void onVisibilityChanged(View changedView, int visibility) {
7920        super.onVisibilityChanged(changedView, visibility);
7921        if (mEditor != null && visibility != VISIBLE) {
7922            mEditor.hideControllers();
7923        }
7924    }
7925
7926    /**
7927     * Use {@link BaseInputConnection#removeComposingSpans
7928     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7929     * state from this text view.
7930     */
7931    public void clearComposingText() {
7932        if (mText instanceof Spannable) {
7933            BaseInputConnection.removeComposingSpans((Spannable)mText);
7934        }
7935    }
7936
7937    @Override
7938    public void setSelected(boolean selected) {
7939        boolean wasSelected = isSelected();
7940
7941        super.setSelected(selected);
7942
7943        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7944            if (selected) {
7945                startMarquee();
7946            } else {
7947                stopMarquee();
7948            }
7949        }
7950    }
7951
7952    @Override
7953    public boolean onTouchEvent(MotionEvent event) {
7954        final int action = event.getActionMasked();
7955
7956        if (mEditor != null) mEditor.onTouchEvent(event);
7957
7958        final boolean superResult = super.onTouchEvent(event);
7959
7960        /*
7961         * Don't handle the release after a long press, because it will
7962         * move the selection away from whatever the menu action was
7963         * trying to affect.
7964         */
7965        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7966            mEditor.mDiscardNextActionUp = false;
7967            return superResult;
7968        }
7969
7970        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7971                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7972
7973         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7974                && mText instanceof Spannable && mLayout != null) {
7975            boolean handled = false;
7976
7977            if (mMovement != null) {
7978                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7979            }
7980
7981            final boolean textIsSelectable = isTextSelectable();
7982            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7983                // The LinkMovementMethod which should handle taps on links has not been installed
7984                // on non editable text that support text selection.
7985                // We reproduce its behavior here to open links for these.
7986                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7987                        getSelectionEnd(), ClickableSpan.class);
7988
7989                if (links.length > 0) {
7990                    links[0].onClick(this);
7991                    handled = true;
7992                }
7993            }
7994
7995            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7996                // Show the IME, except when selecting in read-only text.
7997                final InputMethodManager imm = InputMethodManager.peekInstance();
7998                viewClicked(imm);
7999                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8000                    handled |= imm != null && imm.showSoftInput(this, 0);
8001                }
8002
8003                // The above condition ensures that the mEditor is not null
8004                mEditor.onTouchUpEvent(event);
8005
8006                handled = true;
8007            }
8008
8009            if (handled) {
8010                return true;
8011            }
8012        }
8013
8014        return superResult;
8015    }
8016
8017    @Override
8018    public boolean onGenericMotionEvent(MotionEvent event) {
8019        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8020            try {
8021                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8022                    return true;
8023                }
8024            } catch (AbstractMethodError ex) {
8025                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8026                // Ignore its absence in case third party applications implemented the
8027                // interface directly.
8028            }
8029        }
8030        return super.onGenericMotionEvent(event);
8031    }
8032
8033    /**
8034     * @return True iff this TextView contains a text that can be edited, or if this is
8035     * a selectable TextView.
8036     */
8037    boolean isTextEditable() {
8038        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8039    }
8040
8041    /**
8042     * Returns true, only while processing a touch gesture, if the initial
8043     * touch down event caused focus to move to the text view and as a result
8044     * its selection changed.  Only valid while processing the touch gesture
8045     * of interest, in an editable text view.
8046     */
8047    public boolean didTouchFocusSelect() {
8048        return mEditor != null && mEditor.mTouchFocusSelected;
8049    }
8050
8051    @Override
8052    public void cancelLongPress() {
8053        super.cancelLongPress();
8054        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8055    }
8056
8057    @Override
8058    public boolean onTrackballEvent(MotionEvent event) {
8059        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8060            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8061                return true;
8062            }
8063        }
8064
8065        return super.onTrackballEvent(event);
8066    }
8067
8068    public void setScroller(Scroller s) {
8069        mScroller = s;
8070    }
8071
8072    @Override
8073    protected float getLeftFadingEdgeStrength() {
8074        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8075                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8076            if (mMarquee != null && !mMarquee.isStopped()) {
8077                final Marquee marquee = mMarquee;
8078                if (marquee.shouldDrawLeftFade()) {
8079                    final float scroll = marquee.getScroll();
8080                    return scroll / getHorizontalFadingEdgeLength();
8081                } else {
8082                    return 0.0f;
8083                }
8084            } else if (getLineCount() == 1) {
8085                final int layoutDirection = getLayoutDirection();
8086                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8087                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8088                    case Gravity.LEFT:
8089                        return 0.0f;
8090                    case Gravity.RIGHT:
8091                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8092                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8093                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8094                    case Gravity.CENTER_HORIZONTAL:
8095                    case Gravity.FILL_HORIZONTAL:
8096                        final int textDirection = mLayout.getParagraphDirection(0);
8097                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8098                            return 0.0f;
8099                        } else {
8100                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8101                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8102                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8103                        }
8104                }
8105            }
8106        }
8107        return super.getLeftFadingEdgeStrength();
8108    }
8109
8110    @Override
8111    protected float getRightFadingEdgeStrength() {
8112        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8113                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8114            if (mMarquee != null && !mMarquee.isStopped()) {
8115                final Marquee marquee = mMarquee;
8116                final float maxFadeScroll = marquee.getMaxFadeScroll();
8117                final float scroll = marquee.getScroll();
8118                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8119            } else if (getLineCount() == 1) {
8120                final int layoutDirection = getLayoutDirection();
8121                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8122                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8123                    case Gravity.LEFT:
8124                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8125                                getCompoundPaddingRight();
8126                        final float lineWidth = mLayout.getLineWidth(0);
8127                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8128                    case Gravity.RIGHT:
8129                        return 0.0f;
8130                    case Gravity.CENTER_HORIZONTAL:
8131                    case Gravity.FILL_HORIZONTAL:
8132                        final int textDirection = mLayout.getParagraphDirection(0);
8133                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8134                            return 0.0f;
8135                        } else {
8136                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8137                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8138                                getHorizontalFadingEdgeLength();
8139                        }
8140                }
8141            }
8142        }
8143        return super.getRightFadingEdgeStrength();
8144    }
8145
8146    @Override
8147    protected int computeHorizontalScrollRange() {
8148        if (mLayout != null) {
8149            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8150                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8151        }
8152
8153        return super.computeHorizontalScrollRange();
8154    }
8155
8156    @Override
8157    protected int computeVerticalScrollRange() {
8158        if (mLayout != null)
8159            return mLayout.getHeight();
8160
8161        return super.computeVerticalScrollRange();
8162    }
8163
8164    @Override
8165    protected int computeVerticalScrollExtent() {
8166        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8167    }
8168
8169    @Override
8170    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8171        super.findViewsWithText(outViews, searched, flags);
8172        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8173                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8174            String searchedLowerCase = searched.toString().toLowerCase();
8175            String textLowerCase = mText.toString().toLowerCase();
8176            if (textLowerCase.contains(searchedLowerCase)) {
8177                outViews.add(this);
8178            }
8179        }
8180    }
8181
8182    public enum BufferType {
8183        NORMAL, SPANNABLE, EDITABLE,
8184    }
8185
8186    /**
8187     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8188     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8189     * if TextView_textColor was not set directly.
8190     *
8191     * @removed
8192     */
8193    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8194        if (attrs == null) {
8195            // Preserve behavior prior to removal of this API.
8196            throw new NullPointerException();
8197        }
8198
8199        // It's not safe to use this method from apps. The parameter 'attrs'
8200        // must have been obtained using the TextView filter array which is not
8201        // available to the SDK. As such, we grab a default TypedArray with the
8202        // right filter instead here.
8203        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8204        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8205        if (colors == null) {
8206            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8207            if (ap != 0) {
8208                final TypedArray appearance = context.obtainStyledAttributes(
8209                        ap, R.styleable.TextAppearance);
8210                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8211                appearance.recycle();
8212            }
8213        }
8214        a.recycle();
8215
8216        return colors;
8217    }
8218
8219    /**
8220     * Returns the default color from the TextView_textColor attribute from the
8221     * AttributeSet, if set, or the default color from the
8222     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8223     * TextView_textColor was not set directly.
8224     *
8225     * @removed
8226     */
8227    public static int getTextColor(Context context, TypedArray attrs, int def) {
8228        final ColorStateList colors = getTextColors(context, attrs);
8229        if (colors == null) {
8230            return def;
8231        } else {
8232            return colors.getDefaultColor();
8233        }
8234    }
8235
8236    @Override
8237    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8238        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
8239        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
8240            switch (keyCode) {
8241            case KeyEvent.KEYCODE_A:
8242                if (canSelectText()) {
8243                    return onTextContextMenuItem(ID_SELECT_ALL);
8244                }
8245                break;
8246            case KeyEvent.KEYCODE_X:
8247                if (canCut()) {
8248                    return onTextContextMenuItem(ID_CUT);
8249                }
8250                break;
8251            case KeyEvent.KEYCODE_C:
8252                if (canCopy()) {
8253                    return onTextContextMenuItem(ID_COPY);
8254                }
8255                break;
8256            case KeyEvent.KEYCODE_V:
8257                if (canPaste()) {
8258                    return onTextContextMenuItem(ID_PASTE);
8259                }
8260                break;
8261            }
8262        }
8263        return super.onKeyShortcut(keyCode, event);
8264    }
8265
8266    /**
8267     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8268     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8269     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8270     * sufficient.
8271     */
8272    private boolean canSelectText() {
8273        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8274    }
8275
8276    /**
8277     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8278     * The text must be spannable and the movement method must allow for arbitary selection.
8279     *
8280     * See also {@link #canSelectText()}.
8281     */
8282    boolean textCanBeSelected() {
8283        // prepareCursorController() relies on this method.
8284        // If you change this condition, make sure prepareCursorController is called anywhere
8285        // the value of this condition might be changed.
8286        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8287        return isTextEditable() ||
8288                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8289    }
8290
8291    private Locale getTextServicesLocale(boolean allowNullLocale) {
8292        // Start fetching the text services locale asynchronously.
8293        updateTextServicesLocaleAsync();
8294        // If !allowNullLocale and there is no cached text services locale, just return the default
8295        // locale.
8296        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8297                : mCurrentSpellCheckerLocaleCache;
8298    }
8299
8300    /**
8301     * This is a temporary method. Future versions may support multi-locale text.
8302     * Caveat: This method may not return the latest text services locale, but this should be
8303     * acceptable and it's more important to make this method asynchronous.
8304     *
8305     * @return The locale that should be used for a word iterator
8306     * in this TextView, based on the current spell checker settings,
8307     * the current IME's locale, or the system default locale.
8308     * Please note that a word iterator in this TextView is different from another word iterator
8309     * used by SpellChecker.java of TextView. This method should be used for the former.
8310     * @hide
8311     */
8312    // TODO: Support multi-locale
8313    // TODO: Update the text services locale immediately after the keyboard locale is switched
8314    // by catching intent of keyboard switch event
8315    public Locale getTextServicesLocale() {
8316        return getTextServicesLocale(false /* allowNullLocale */);
8317    }
8318
8319    /**
8320     * This is a temporary method. Future versions may support multi-locale text.
8321     * Caveat: This method may not return the latest spell checker locale, but this should be
8322     * acceptable and it's more important to make this method asynchronous.
8323     *
8324     * @return The locale that should be used for a spell checker in this TextView,
8325     * based on the current spell checker settings, the current IME's locale, or the system default
8326     * locale.
8327     * @hide
8328     */
8329    public Locale getSpellCheckerLocale() {
8330        return getTextServicesLocale(true /* allowNullLocale */);
8331    }
8332
8333    private void updateTextServicesLocaleAsync() {
8334        // AsyncTask.execute() uses a serial executor which means we don't have
8335        // to lock around updateTextServicesLocaleLocked() to prevent it from
8336        // being executed n times in parallel.
8337        AsyncTask.execute(new Runnable() {
8338            @Override
8339            public void run() {
8340                updateTextServicesLocaleLocked();
8341            }
8342        });
8343    }
8344
8345    private void updateTextServicesLocaleLocked() {
8346        final TextServicesManager textServicesManager = (TextServicesManager)
8347                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8348        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8349        final Locale locale;
8350        if (subtype != null) {
8351            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
8352        } else {
8353            locale = null;
8354        }
8355        mCurrentSpellCheckerLocaleCache = locale;
8356    }
8357
8358    void onLocaleChanged() {
8359        // Will be re-created on demand in getWordIterator with the proper new locale
8360        mEditor.mWordIterator = null;
8361    }
8362
8363    /**
8364     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8365     * Made available to achieve a consistent behavior.
8366     * @hide
8367     */
8368    public WordIterator getWordIterator() {
8369        if (mEditor != null) {
8370            return mEditor.getWordIterator();
8371        } else {
8372            return null;
8373        }
8374    }
8375
8376    @Override
8377    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
8378        super.onPopulateAccessibilityEvent(event);
8379
8380        final boolean isPassword = hasPasswordTransformationMethod();
8381        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8382            final CharSequence text = getTextForAccessibility();
8383            if (!TextUtils.isEmpty(text)) {
8384                event.getText().add(text);
8385            }
8386        }
8387    }
8388
8389    /**
8390     * @return true if the user has explicitly allowed accessibility services
8391     * to speak passwords.
8392     */
8393    private boolean shouldSpeakPasswordsForAccessibility() {
8394        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8395                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8396                UserHandle.USER_CURRENT_OR_SELF) == 1);
8397    }
8398
8399    @Override
8400    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
8401        super.onInitializeAccessibilityEvent(event);
8402
8403        event.setClassName(TextView.class.getName());
8404        final boolean isPassword = hasPasswordTransformationMethod();
8405        event.setPassword(isPassword);
8406
8407        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
8408            event.setFromIndex(Selection.getSelectionStart(mText));
8409            event.setToIndex(Selection.getSelectionEnd(mText));
8410            event.setItemCount(mText.length());
8411        }
8412    }
8413
8414    @Override
8415    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
8416        super.onInitializeAccessibilityNodeInfo(info);
8417
8418        info.setClassName(TextView.class.getName());
8419        final boolean isPassword = hasPasswordTransformationMethod();
8420        info.setPassword(isPassword);
8421
8422        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8423            info.setText(getTextForAccessibility());
8424        }
8425
8426        if (mBufferType == BufferType.EDITABLE) {
8427            info.setEditable(true);
8428        }
8429
8430        if (mEditor != null) {
8431            info.setInputType(mEditor.mInputType);
8432
8433            if (mEditor.mError != null) {
8434                info.setContentInvalid(true);
8435                info.setError(mEditor.mError);
8436            }
8437        }
8438
8439        if (!TextUtils.isEmpty(mText)) {
8440            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
8441            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
8442            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8443                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8444                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8445                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8446                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8447        }
8448
8449        if (isFocused()) {
8450            if (canSelectText()) {
8451                info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8452            }
8453            if (canCopy()) {
8454                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8455            }
8456            if (canPaste()) {
8457                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8458            }
8459            if (canCut()) {
8460                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8461            }
8462        }
8463
8464        // Check for known input filter types.
8465        final int numFilters = mFilters.length;
8466        for (int i = 0; i < numFilters; i++) {
8467            final InputFilter filter = mFilters[i];
8468            if (filter instanceof InputFilter.LengthFilter) {
8469                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
8470            }
8471        }
8472
8473        if (!isSingleLine()) {
8474            info.setMultiLine(true);
8475        }
8476    }
8477
8478    /**
8479     * Performs an accessibility action after it has been offered to the
8480     * delegate.
8481     *
8482     * @hide
8483     */
8484    @Override
8485    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
8486        switch (action) {
8487            case AccessibilityNodeInfo.ACTION_CLICK: {
8488                boolean handled = false;
8489
8490                // Simulate View.onTouchEvent for an ACTION_UP event.
8491                if (isClickable() || isLongClickable()) {
8492                    if (isFocusable() && !isFocused()) {
8493                        requestFocus();
8494                    }
8495
8496                    performClick();
8497                    handled = true;
8498                }
8499
8500                // Simulate TextView.onTouchEvent for an ACTION_UP event.
8501                if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8502                        && mText instanceof Spannable && mLayout != null
8503                        && (isTextEditable() || isTextSelectable()) && isFocused()) {
8504                    // Show the IME, except when selecting in read-only text.
8505                    final InputMethodManager imm = InputMethodManager.peekInstance();
8506                    viewClicked(imm);
8507                    if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
8508                        handled |= imm.showSoftInput(this, 0);
8509                    }
8510                }
8511
8512                return handled;
8513            }
8514            case AccessibilityNodeInfo.ACTION_COPY: {
8515                if (isFocused() && canCopy()) {
8516                    if (onTextContextMenuItem(ID_COPY)) {
8517                        return true;
8518                    }
8519                }
8520            } return false;
8521            case AccessibilityNodeInfo.ACTION_PASTE: {
8522                if (isFocused() && canPaste()) {
8523                    if (onTextContextMenuItem(ID_PASTE)) {
8524                        return true;
8525                    }
8526                }
8527            } return false;
8528            case AccessibilityNodeInfo.ACTION_CUT: {
8529                if (isFocused() && canCut()) {
8530                    if (onTextContextMenuItem(ID_CUT)) {
8531                        return true;
8532                    }
8533                }
8534            } return false;
8535            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
8536                if (isFocused() && canSelectText()) {
8537                    ensureIterableTextForAccessibilitySelectable();
8538                    CharSequence text = getIterableTextForAccessibility();
8539                    if (text == null) {
8540                        return false;
8541                    }
8542                    final int start = (arguments != null) ? arguments.getInt(
8543                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
8544                    final int end = (arguments != null) ? arguments.getInt(
8545                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
8546                    if ((getSelectionStart() != start || getSelectionEnd() != end)) {
8547                        // No arguments clears the selection.
8548                        if (start == end && end == -1) {
8549                            Selection.removeSelection((Spannable) text);
8550                            return true;
8551                        }
8552                        if (start >= 0 && start <= end && end <= text.length()) {
8553                            Selection.setSelection((Spannable) text, start, end);
8554                            // Make sure selection mode is engaged.
8555                            if (mEditor != null) {
8556                                mEditor.startSelectionActionMode();
8557                            }
8558                            return true;
8559                        }
8560                    }
8561                }
8562            } return false;
8563            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
8564            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
8565                ensureIterableTextForAccessibilitySelectable();
8566                return super.performAccessibilityActionInternal(action, arguments);
8567            }
8568            default: {
8569                return super.performAccessibilityActionInternal(action, arguments);
8570            }
8571        }
8572    }
8573
8574    @Override
8575    public void sendAccessibilityEvent(int eventType) {
8576        // Do not send scroll events since first they are not interesting for
8577        // accessibility and second such events a generated too frequently.
8578        // For details see the implementation of bringTextIntoView().
8579        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
8580            return;
8581        }
8582        super.sendAccessibilityEvent(eventType);
8583    }
8584
8585    /**
8586     * Gets the text reported for accessibility purposes.
8587     *
8588     * @return The accessibility text.
8589     *
8590     * @hide
8591     */
8592    public CharSequence getTextForAccessibility() {
8593        CharSequence text = getText();
8594        if (TextUtils.isEmpty(text)) {
8595            text = getHint();
8596        }
8597        return text;
8598    }
8599
8600    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8601            int fromIndex, int removedCount, int addedCount) {
8602        AccessibilityEvent event =
8603            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8604        event.setFromIndex(fromIndex);
8605        event.setRemovedCount(removedCount);
8606        event.setAddedCount(addedCount);
8607        event.setBeforeText(beforeText);
8608        sendAccessibilityEventUnchecked(event);
8609    }
8610
8611    /**
8612     * Returns whether this text view is a current input method target.  The
8613     * default implementation just checks with {@link InputMethodManager}.
8614     */
8615    public boolean isInputMethodTarget() {
8616        InputMethodManager imm = InputMethodManager.peekInstance();
8617        return imm != null && imm.isActive(this);
8618    }
8619
8620    static final int ID_SELECT_ALL = android.R.id.selectAll;
8621    static final int ID_CUT = android.R.id.cut;
8622    static final int ID_COPY = android.R.id.copy;
8623    static final int ID_PASTE = android.R.id.paste;
8624
8625    /**
8626     * Called when a context menu option for the text view is selected.  Currently
8627     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
8628     * {@link android.R.id#copy} or {@link android.R.id#paste}.
8629     *
8630     * @return true if the context menu item action was performed.
8631     */
8632    public boolean onTextContextMenuItem(int id) {
8633        int min = 0;
8634        int max = mText.length();
8635
8636        if (isFocused()) {
8637            final int selStart = getSelectionStart();
8638            final int selEnd = getSelectionEnd();
8639
8640            min = Math.max(0, Math.min(selStart, selEnd));
8641            max = Math.max(0, Math.max(selStart, selEnd));
8642        }
8643
8644        switch (id) {
8645            case ID_SELECT_ALL:
8646                // This does not enter text selection mode. Text is highlighted, so that it can be
8647                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8648                selectAllText();
8649                return true;
8650
8651            case ID_PASTE:
8652                paste(min, max);
8653                return true;
8654
8655            case ID_CUT:
8656                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8657                deleteText_internal(min, max);
8658                stopSelectionActionMode();
8659                return true;
8660
8661            case ID_COPY:
8662                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8663                stopSelectionActionMode();
8664                return true;
8665        }
8666        return false;
8667    }
8668
8669    CharSequence getTransformedText(int start, int end) {
8670        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8671    }
8672
8673    @Override
8674    public boolean performLongClick() {
8675        boolean handled = false;
8676
8677        if (super.performLongClick()) {
8678            handled = true;
8679        }
8680
8681        if (mEditor != null) {
8682            handled |= mEditor.performLongClick(handled);
8683        }
8684
8685        if (handled) {
8686            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8687            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
8688        }
8689
8690        return handled;
8691    }
8692
8693    @Override
8694    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8695        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8696        if (mEditor != null) {
8697            mEditor.onScrollChanged();
8698        }
8699    }
8700
8701    /**
8702     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8703     * by the IME or by the spell checker as the user types. This is done by adding
8704     * {@link SuggestionSpan}s to the text.
8705     *
8706     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8707     * user asks for them on these parts of the text. This value depends on the inputType of this
8708     * TextView.
8709     *
8710     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8711     *
8712     * In addition, the type variation must be one of
8713     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8714     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8715     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8716     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8717     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8718     *
8719     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8720     *
8721     * @return true if the suggestions popup window is enabled, based on the inputType.
8722     */
8723    public boolean isSuggestionsEnabled() {
8724        if (mEditor == null) return false;
8725        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
8726            return false;
8727        }
8728        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8729
8730        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
8731        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8732                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8733                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8734                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8735                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8736    }
8737
8738    /**
8739     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8740     * selection is initiated in this View.
8741     *
8742     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8743     * Paste actions, depending on what this View supports.
8744     *
8745     * A custom implementation can add new entries in the default menu in its
8746     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8747     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
8748     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
8749     * or {@link android.R.id#paste} ids as parameters.
8750     *
8751     * Returning false from
8752     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8753     * the action mode from being started.
8754     *
8755     * Action click events should be handled by the custom implementation of
8756     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8757     *
8758     * Note that text selection mode is not started when a TextView receives focus and the
8759     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8760     * that case, to allow for quick replacement.
8761     */
8762    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8763        createEditorIfNeeded();
8764        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
8765    }
8766
8767    /**
8768     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8769     *
8770     * @return The current custom selection callback.
8771     */
8772    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8773        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
8774    }
8775
8776    /**
8777     * @hide
8778     */
8779    protected void stopSelectionActionMode() {
8780        mEditor.stopSelectionActionMode();
8781    }
8782
8783    boolean canCut() {
8784        if (hasPasswordTransformationMethod()) {
8785            return false;
8786        }
8787
8788        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
8789                mEditor.mKeyListener != null) {
8790            return true;
8791        }
8792
8793        return false;
8794    }
8795
8796    boolean canCopy() {
8797        if (hasPasswordTransformationMethod()) {
8798            return false;
8799        }
8800
8801        if (mText.length() > 0 && hasSelection() && mEditor != null) {
8802            return true;
8803        }
8804
8805        return false;
8806    }
8807
8808    boolean canPaste() {
8809        return (mText instanceof Editable &&
8810                mEditor != null && mEditor.mKeyListener != null &&
8811                getSelectionStart() >= 0 &&
8812                getSelectionEnd() >= 0 &&
8813                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8814                hasPrimaryClip());
8815    }
8816
8817    boolean selectAllText() {
8818        final int length = mText.length();
8819        Selection.setSelection((Spannable) mText, 0, length);
8820        return length > 0;
8821    }
8822
8823    /**
8824     * Paste clipboard content between min and max positions.
8825     */
8826    private void paste(int min, int max) {
8827        ClipboardManager clipboard =
8828            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8829        ClipData clip = clipboard.getPrimaryClip();
8830        if (clip != null) {
8831            boolean didFirst = false;
8832            for (int i=0; i<clip.getItemCount(); i++) {
8833                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8834                if (paste != null) {
8835                    if (!didFirst) {
8836                        Selection.setSelection((Spannable) mText, max);
8837                        ((Editable) mText).replace(min, max, paste);
8838                        didFirst = true;
8839                    } else {
8840                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8841                        ((Editable) mText).insert(getSelectionEnd(), paste);
8842                    }
8843                }
8844            }
8845            stopSelectionActionMode();
8846            LAST_CUT_OR_COPY_TIME = 0;
8847        }
8848    }
8849
8850    private void setPrimaryClip(ClipData clip) {
8851        ClipboardManager clipboard = (ClipboardManager) getContext().
8852                getSystemService(Context.CLIPBOARD_SERVICE);
8853        clipboard.setPrimaryClip(clip);
8854        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8855    }
8856
8857    /**
8858     * Get the character offset closest to the specified absolute position. A typical use case is to
8859     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8860     *
8861     * @param x The horizontal absolute position of a point on screen
8862     * @param y The vertical absolute position of a point on screen
8863     * @return the character offset for the character whose position is closest to the specified
8864     *  position. Returns -1 if there is no layout.
8865     */
8866    public int getOffsetForPosition(float x, float y) {
8867        if (getLayout() == null) return -1;
8868        final int line = getLineAtCoordinate(y);
8869        final int offset = getOffsetAtCoordinate(line, x);
8870        return offset;
8871    }
8872
8873    float convertToLocalHorizontalCoordinate(float x) {
8874        x -= getTotalPaddingLeft();
8875        // Clamp the position to inside of the view.
8876        x = Math.max(0.0f, x);
8877        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8878        x += getScrollX();
8879        return x;
8880    }
8881
8882    int getLineAtCoordinate(float y) {
8883        y -= getTotalPaddingTop();
8884        // Clamp the position to inside of the view.
8885        y = Math.max(0.0f, y);
8886        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8887        y += getScrollY();
8888        return getLayout().getLineForVertical((int) y);
8889    }
8890
8891    private int getOffsetAtCoordinate(int line, float x) {
8892        x = convertToLocalHorizontalCoordinate(x);
8893        return getLayout().getOffsetForHorizontal(line, x);
8894    }
8895
8896    @Override
8897    public boolean onDragEvent(DragEvent event) {
8898        switch (event.getAction()) {
8899            case DragEvent.ACTION_DRAG_STARTED:
8900                return mEditor != null && mEditor.hasInsertionController();
8901
8902            case DragEvent.ACTION_DRAG_ENTERED:
8903                TextView.this.requestFocus();
8904                return true;
8905
8906            case DragEvent.ACTION_DRAG_LOCATION:
8907                final int offset = getOffsetForPosition(event.getX(), event.getY());
8908                Selection.setSelection((Spannable)mText, offset);
8909                return true;
8910
8911            case DragEvent.ACTION_DROP:
8912                if (mEditor != null) mEditor.onDrop(event);
8913                return true;
8914
8915            case DragEvent.ACTION_DRAG_ENDED:
8916            case DragEvent.ACTION_DRAG_EXITED:
8917            default:
8918                return true;
8919        }
8920    }
8921
8922    boolean isInBatchEditMode() {
8923        if (mEditor == null) return false;
8924        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8925        if (ims != null) {
8926            return ims.mBatchEditNesting > 0;
8927        }
8928        return mEditor.mInBatchEditControllers;
8929    }
8930
8931    @Override
8932    public void onRtlPropertiesChanged(int layoutDirection) {
8933        super.onRtlPropertiesChanged(layoutDirection);
8934
8935        mTextDir = getTextDirectionHeuristic();
8936
8937        if (mLayout != null) {
8938            checkForRelayout();
8939        }
8940    }
8941
8942    TextDirectionHeuristic getTextDirectionHeuristic() {
8943        if (hasPasswordTransformationMethod()) {
8944            // passwords fields should be LTR
8945            return TextDirectionHeuristics.LTR;
8946        }
8947
8948        // Always need to resolve layout direction first
8949        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
8950
8951        // Now, we can select the heuristic
8952        switch (getTextDirection()) {
8953            default:
8954            case TEXT_DIRECTION_FIRST_STRONG:
8955                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8956                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8957            case TEXT_DIRECTION_ANY_RTL:
8958                return TextDirectionHeuristics.ANYRTL_LTR;
8959            case TEXT_DIRECTION_LTR:
8960                return TextDirectionHeuristics.LTR;
8961            case TEXT_DIRECTION_RTL:
8962                return TextDirectionHeuristics.RTL;
8963            case TEXT_DIRECTION_LOCALE:
8964                return TextDirectionHeuristics.LOCALE;
8965        }
8966    }
8967
8968    /**
8969     * @hide
8970     */
8971    @Override
8972    public void onResolveDrawables(int layoutDirection) {
8973        // No need to resolve twice
8974        if (mLastLayoutDirection == layoutDirection) {
8975            return;
8976        }
8977        mLastLayoutDirection = layoutDirection;
8978
8979        // Resolve drawables
8980        if (mDrawables != null) {
8981            mDrawables.resolveWithLayoutDirection(layoutDirection);
8982        }
8983    }
8984
8985    /**
8986     * @hide
8987     */
8988    protected void resetResolvedDrawables() {
8989        super.resetResolvedDrawables();
8990        mLastLayoutDirection = -1;
8991    }
8992
8993    /**
8994     * @hide
8995     */
8996    protected void viewClicked(InputMethodManager imm) {
8997        if (imm != null) {
8998            imm.viewClicked(this);
8999        }
9000    }
9001
9002    /**
9003     * Deletes the range of text [start, end[.
9004     * @hide
9005     */
9006    protected void deleteText_internal(int start, int end) {
9007        ((Editable) mText).delete(start, end);
9008    }
9009
9010    /**
9011     * Replaces the range of text [start, end[ by replacement text
9012     * @hide
9013     */
9014    protected void replaceText_internal(int start, int end, CharSequence text) {
9015        ((Editable) mText).replace(start, end, text);
9016    }
9017
9018    /**
9019     * Sets a span on the specified range of text
9020     * @hide
9021     */
9022    protected void setSpan_internal(Object span, int start, int end, int flags) {
9023        ((Editable) mText).setSpan(span, start, end, flags);
9024    }
9025
9026    /**
9027     * Moves the cursor to the specified offset position in text
9028     * @hide
9029     */
9030    protected void setCursorPosition_internal(int start, int end) {
9031        Selection.setSelection(((Editable) mText), start, end);
9032    }
9033
9034    /**
9035     * An Editor should be created as soon as any of the editable-specific fields (grouped
9036     * inside the Editor object) is assigned to a non-default value.
9037     * This method will create the Editor if needed.
9038     *
9039     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9040     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9041     * Editor for backward compatibility, as soon as one of these fields is assigned.
9042     *
9043     * Also note that for performance reasons, the mEditor is created when needed, but not
9044     * reset when no more edit-specific fields are needed.
9045     */
9046    private void createEditorIfNeeded() {
9047        if (mEditor == null) {
9048            mEditor = new Editor(this);
9049        }
9050    }
9051
9052    /**
9053     * @hide
9054     */
9055    @Override
9056    public CharSequence getIterableTextForAccessibility() {
9057        return mText;
9058    }
9059
9060    private void ensureIterableTextForAccessibilitySelectable() {
9061        if (!(mText instanceof Spannable)) {
9062            setText(mText, BufferType.SPANNABLE);
9063        }
9064    }
9065
9066    /**
9067     * @hide
9068     */
9069    @Override
9070    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9071        switch (granularity) {
9072            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9073                Spannable text = (Spannable) getIterableTextForAccessibility();
9074                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9075                    AccessibilityIterators.LineTextSegmentIterator iterator =
9076                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9077                    iterator.initialize(text, getLayout());
9078                    return iterator;
9079                }
9080            } break;
9081            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9082                Spannable text = (Spannable) getIterableTextForAccessibility();
9083                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9084                    AccessibilityIterators.PageTextSegmentIterator iterator =
9085                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9086                    iterator.initialize(this);
9087                    return iterator;
9088                }
9089            } break;
9090        }
9091        return super.getIteratorForGranularity(granularity);
9092    }
9093
9094    /**
9095     * @hide
9096     */
9097    @Override
9098    public int getAccessibilitySelectionStart() {
9099        return getSelectionStart();
9100    }
9101
9102    /**
9103     * @hide
9104     */
9105    public boolean isAccessibilitySelectionExtendable() {
9106        return true;
9107    }
9108
9109    /**
9110     * @hide
9111     */
9112    @Override
9113    public int getAccessibilitySelectionEnd() {
9114        return getSelectionEnd();
9115    }
9116
9117    /**
9118     * @hide
9119     */
9120    @Override
9121    public void setAccessibilitySelection(int start, int end) {
9122        if (getAccessibilitySelectionStart() == start
9123                && getAccessibilitySelectionEnd() == end) {
9124            return;
9125        }
9126        // Hide all selection controllers used for adjusting selection
9127        // since we are doing so explicitlty by other means and these
9128        // controllers interact with how selection behaves.
9129        if (mEditor != null) {
9130            mEditor.hideControllers();
9131        }
9132        CharSequence text = getIterableTextForAccessibility();
9133        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9134            Selection.setSelection((Spannable) text, start, end);
9135        } else {
9136            Selection.removeSelection((Spannable) text);
9137        }
9138    }
9139
9140    /**
9141     * User interface state that is stored by TextView for implementing
9142     * {@link View#onSaveInstanceState}.
9143     */
9144    public static class SavedState extends BaseSavedState {
9145        int selStart;
9146        int selEnd;
9147        CharSequence text;
9148        boolean frozenWithFocus;
9149        CharSequence error;
9150
9151        SavedState(Parcelable superState) {
9152            super(superState);
9153        }
9154
9155        @Override
9156        public void writeToParcel(Parcel out, int flags) {
9157            super.writeToParcel(out, flags);
9158            out.writeInt(selStart);
9159            out.writeInt(selEnd);
9160            out.writeInt(frozenWithFocus ? 1 : 0);
9161            TextUtils.writeToParcel(text, out, flags);
9162
9163            if (error == null) {
9164                out.writeInt(0);
9165            } else {
9166                out.writeInt(1);
9167                TextUtils.writeToParcel(error, out, flags);
9168            }
9169        }
9170
9171        @Override
9172        public String toString() {
9173            String str = "TextView.SavedState{"
9174                    + Integer.toHexString(System.identityHashCode(this))
9175                    + " start=" + selStart + " end=" + selEnd;
9176            if (text != null) {
9177                str += " text=" + text;
9178            }
9179            return str + "}";
9180        }
9181
9182        @SuppressWarnings("hiding")
9183        public static final Parcelable.Creator<SavedState> CREATOR
9184                = new Parcelable.Creator<SavedState>() {
9185            public SavedState createFromParcel(Parcel in) {
9186                return new SavedState(in);
9187            }
9188
9189            public SavedState[] newArray(int size) {
9190                return new SavedState[size];
9191            }
9192        };
9193
9194        private SavedState(Parcel in) {
9195            super(in);
9196            selStart = in.readInt();
9197            selEnd = in.readInt();
9198            frozenWithFocus = (in.readInt() != 0);
9199            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9200
9201            if (in.readInt() != 0) {
9202                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9203            }
9204        }
9205    }
9206
9207    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
9208        private char[] mChars;
9209        private int mStart, mLength;
9210
9211        public CharWrapper(char[] chars, int start, int len) {
9212            mChars = chars;
9213            mStart = start;
9214            mLength = len;
9215        }
9216
9217        /* package */ void set(char[] chars, int start, int len) {
9218            mChars = chars;
9219            mStart = start;
9220            mLength = len;
9221        }
9222
9223        public int length() {
9224            return mLength;
9225        }
9226
9227        public char charAt(int off) {
9228            return mChars[off + mStart];
9229        }
9230
9231        @Override
9232        public String toString() {
9233            return new String(mChars, mStart, mLength);
9234        }
9235
9236        public CharSequence subSequence(int start, int end) {
9237            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9238                throw new IndexOutOfBoundsException(start + ", " + end);
9239            }
9240
9241            return new String(mChars, start + mStart, end - start);
9242        }
9243
9244        public void getChars(int start, int end, char[] buf, int off) {
9245            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9246                throw new IndexOutOfBoundsException(start + ", " + end);
9247            }
9248
9249            System.arraycopy(mChars, start + mStart, buf, off, end - start);
9250        }
9251
9252        public void drawText(Canvas c, int start, int end,
9253                             float x, float y, Paint p) {
9254            c.drawText(mChars, start + mStart, end - start, x, y, p);
9255        }
9256
9257        public void drawTextRun(Canvas c, int start, int end,
9258                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
9259            int count = end - start;
9260            int contextCount = contextEnd - contextStart;
9261            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
9262                    contextCount, x, y, isRtl, p);
9263        }
9264
9265        public float measureText(int start, int end, Paint p) {
9266            return p.measureText(mChars, start + mStart, end - start);
9267        }
9268
9269        public int getTextWidths(int start, int end, float[] widths, Paint p) {
9270            return p.getTextWidths(mChars, start + mStart, end - start, widths);
9271        }
9272
9273        public float getTextRunAdvances(int start, int end, int contextStart,
9274                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
9275                Paint p) {
9276            int count = end - start;
9277            int contextCount = contextEnd - contextStart;
9278            return p.getTextRunAdvances(mChars, start + mStart, count,
9279                    contextStart + mStart, contextCount, isRtl, advances,
9280                    advancesIndex);
9281        }
9282
9283        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
9284                int offset, int cursorOpt, Paint p) {
9285            int contextCount = contextEnd - contextStart;
9286            return p.getTextRunCursor(mChars, contextStart + mStart,
9287                    contextCount, dir, offset + mStart, cursorOpt);
9288        }
9289    }
9290
9291    private static final class Marquee {
9292        // TODO: Add an option to configure this
9293        private static final float MARQUEE_DELTA_MAX = 0.07f;
9294        private static final int MARQUEE_DELAY = 1200;
9295        private static final int MARQUEE_RESTART_DELAY = 1200;
9296        private static final int MARQUEE_DP_PER_SECOND = 30;
9297
9298        private static final byte MARQUEE_STOPPED = 0x0;
9299        private static final byte MARQUEE_STARTING = 0x1;
9300        private static final byte MARQUEE_RUNNING = 0x2;
9301
9302        private final WeakReference<TextView> mView;
9303        private final Choreographer mChoreographer;
9304
9305        private byte mStatus = MARQUEE_STOPPED;
9306        private final float mPixelsPerSecond;
9307        private float mMaxScroll;
9308        private float mMaxFadeScroll;
9309        private float mGhostStart;
9310        private float mGhostOffset;
9311        private float mFadeStop;
9312        private int mRepeatLimit;
9313
9314        private float mScroll;
9315        private long mLastAnimationMs;
9316
9317        Marquee(TextView v) {
9318            final float density = v.getContext().getResources().getDisplayMetrics().density;
9319            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
9320            mView = new WeakReference<TextView>(v);
9321            mChoreographer = Choreographer.getInstance();
9322        }
9323
9324        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
9325            @Override
9326            public void doFrame(long frameTimeNanos) {
9327                tick();
9328            }
9329        };
9330
9331        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
9332            @Override
9333            public void doFrame(long frameTimeNanos) {
9334                mStatus = MARQUEE_RUNNING;
9335                mLastAnimationMs = mChoreographer.getFrameTime();
9336                tick();
9337            }
9338        };
9339
9340        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
9341            @Override
9342            public void doFrame(long frameTimeNanos) {
9343                if (mStatus == MARQUEE_RUNNING) {
9344                    if (mRepeatLimit >= 0) {
9345                        mRepeatLimit--;
9346                    }
9347                    start(mRepeatLimit);
9348                }
9349            }
9350        };
9351
9352        void tick() {
9353            if (mStatus != MARQUEE_RUNNING) {
9354                return;
9355            }
9356
9357            mChoreographer.removeFrameCallback(mTickCallback);
9358
9359            final TextView textView = mView.get();
9360            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9361                long currentMs = mChoreographer.getFrameTime();
9362                long deltaMs = currentMs - mLastAnimationMs;
9363                mLastAnimationMs = currentMs;
9364                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
9365                mScroll += deltaPx;
9366                if (mScroll > mMaxScroll) {
9367                    mScroll = mMaxScroll;
9368                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
9369                } else {
9370                    mChoreographer.postFrameCallback(mTickCallback);
9371                }
9372                textView.invalidate();
9373            }
9374        }
9375
9376        void stop() {
9377            mStatus = MARQUEE_STOPPED;
9378            mChoreographer.removeFrameCallback(mStartCallback);
9379            mChoreographer.removeFrameCallback(mRestartCallback);
9380            mChoreographer.removeFrameCallback(mTickCallback);
9381            resetScroll();
9382        }
9383
9384        private void resetScroll() {
9385            mScroll = 0.0f;
9386            final TextView textView = mView.get();
9387            if (textView != null) textView.invalidate();
9388        }
9389
9390        void start(int repeatLimit) {
9391            if (repeatLimit == 0) {
9392                stop();
9393                return;
9394            }
9395            mRepeatLimit = repeatLimit;
9396            final TextView textView = mView.get();
9397            if (textView != null && textView.mLayout != null) {
9398                mStatus = MARQUEE_STARTING;
9399                mScroll = 0.0f;
9400                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9401                        textView.getCompoundPaddingRight();
9402                final float lineWidth = textView.mLayout.getLineWidth(0);
9403                final float gap = textWidth / 3.0f;
9404                mGhostStart = lineWidth - textWidth + gap;
9405                mMaxScroll = mGhostStart + textWidth;
9406                mGhostOffset = lineWidth + gap;
9407                mFadeStop = lineWidth + textWidth / 6.0f;
9408                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9409
9410                textView.invalidate();
9411                mChoreographer.postFrameCallback(mStartCallback);
9412            }
9413        }
9414
9415        float getGhostOffset() {
9416            return mGhostOffset;
9417        }
9418
9419        float getScroll() {
9420            return mScroll;
9421        }
9422
9423        float getMaxFadeScroll() {
9424            return mMaxFadeScroll;
9425        }
9426
9427        boolean shouldDrawLeftFade() {
9428            return mScroll <= mFadeStop;
9429        }
9430
9431        boolean shouldDrawGhost() {
9432            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9433        }
9434
9435        boolean isRunning() {
9436            return mStatus == MARQUEE_RUNNING;
9437        }
9438
9439        boolean isStopped() {
9440            return mStatus == MARQUEE_STOPPED;
9441        }
9442    }
9443
9444    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9445
9446        private CharSequence mBeforeText;
9447
9448        public void beforeTextChanged(CharSequence buffer, int start,
9449                                      int before, int after) {
9450            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9451                    + " before=" + before + " after=" + after + ": " + buffer);
9452
9453            if (AccessibilityManager.getInstance(mContext).isEnabled()
9454                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
9455                            || shouldSpeakPasswordsForAccessibility())) {
9456                mBeforeText = buffer.toString();
9457            }
9458
9459            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9460        }
9461
9462        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
9463            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9464                    + " before=" + before + " after=" + after + ": " + buffer);
9465            TextView.this.handleTextChanged(buffer, start, before, after);
9466
9467            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9468                    (isFocused() || isSelected() && isShown())) {
9469                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9470                mBeforeText = null;
9471            }
9472        }
9473
9474        public void afterTextChanged(Editable buffer) {
9475            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9476            TextView.this.sendAfterTextChanged(buffer);
9477
9478            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9479                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9480            }
9481        }
9482
9483        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
9484            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9485                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9486            TextView.this.spanChange(buf, what, s, st, e, en);
9487        }
9488
9489        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9490            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9491                    + " what=" + what + ": " + buf);
9492            TextView.this.spanChange(buf, what, -1, s, -1, e);
9493        }
9494
9495        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9496            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9497                    + " what=" + what + ": " + buf);
9498            TextView.this.spanChange(buf, what, s, -1, e, -1);
9499        }
9500    }
9501}
9502