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