TextView.java revision af4caa60064d95aeffc7ab81095a269893f5f2a1 
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 static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
20import android.R;
21import android.annotation.ColorInt;
22import android.annotation.DrawableRes;
23import android.annotation.NonNull;
24import android.annotation.Nullable;
25import android.annotation.Size;
26import android.annotation.StringRes;
27import android.annotation.StyleRes;
28import android.annotation.XmlRes;
29import android.app.Activity;
30import android.app.assist.AssistStructure;
31import android.content.ClipData;
32import android.content.ClipboardManager;
33import android.content.Context;
34import android.content.Intent;
35import android.content.UndoManager;
36import android.content.res.ColorStateList;
37import android.content.res.CompatibilityInfo;
38import android.content.res.Configuration;
39import android.content.res.Resources;
40import android.content.res.TypedArray;
41import android.content.res.XmlResourceParser;
42import android.graphics.Canvas;
43import android.graphics.Insets;
44import android.graphics.Paint;
45import android.graphics.Path;
46import android.graphics.PorterDuff;
47import android.graphics.Rect;
48import android.graphics.RectF;
49import android.graphics.Typeface;
50import android.graphics.drawable.Drawable;
51import android.os.AsyncTask;
52import android.os.Bundle;
53import android.os.Parcel;
54import android.os.Parcelable;
55import android.os.ParcelableParcel;
56import android.os.SystemClock;
57import android.os.UserHandle;
58import android.provider.Settings;
59import android.text.BoringLayout;
60import android.text.DynamicLayout;
61import android.text.Editable;
62import android.text.GetChars;
63import android.text.GraphicsOperations;
64import android.text.InputFilter;
65import android.text.InputType;
66import android.text.Layout;
67import android.text.ParcelableSpan;
68import android.text.Selection;
69import android.text.SpanWatcher;
70import android.text.Spannable;
71import android.text.SpannableString;
72import android.text.SpannableStringBuilder;
73import android.text.Spanned;
74import android.text.SpannedString;
75import android.text.StaticLayout;
76import android.text.TextDirectionHeuristic;
77import android.text.TextDirectionHeuristics;
78import android.text.TextPaint;
79import android.text.TextUtils;
80import android.text.TextUtils.TruncateAt;
81import android.text.TextWatcher;
82import android.text.method.AllCapsTransformationMethod;
83import android.text.method.ArrowKeyMovementMethod;
84import android.text.method.DateKeyListener;
85import android.text.method.DateTimeKeyListener;
86import android.text.method.DialerKeyListener;
87import android.text.method.DigitsKeyListener;
88import android.text.method.KeyListener;
89import android.text.method.LinkMovementMethod;
90import android.text.method.MetaKeyKeyListener;
91import android.text.method.MovementMethod;
92import android.text.method.PasswordTransformationMethod;
93import android.text.method.SingleLineTransformationMethod;
94import android.text.method.TextKeyListener;
95import android.text.method.TimeKeyListener;
96import android.text.method.TransformationMethod;
97import android.text.method.TransformationMethod2;
98import android.text.method.WordIterator;
99import android.text.style.CharacterStyle;
100import android.text.style.ClickableSpan;
101import android.text.style.ParagraphStyle;
102import android.text.style.SpellCheckSpan;
103import android.text.style.SuggestionSpan;
104import android.text.style.URLSpan;
105import android.text.style.UpdateAppearance;
106import android.text.util.Linkify;
107import android.util.AttributeSet;
108import android.util.LocaleList;
109import android.util.Log;
110import android.util.TypedValue;
111import android.view.AccessibilityIterators.TextSegmentIterator;
112import android.view.ActionMode;
113import android.view.Choreographer;
114import android.view.ContextMenu;
115import android.view.DragEvent;
116import android.view.Gravity;
117import android.view.HapticFeedbackConstants;
118import android.view.KeyCharacterMap;
119import android.view.KeyEvent;
120import android.view.MotionEvent;
121import android.view.PointerIcon;
122import android.view.View;
123import android.view.ViewConfiguration;
124import android.view.ViewDebug;
125import android.view.ViewGroup.LayoutParams;
126import android.view.ViewHierarchyEncoder;
127import android.view.ViewParent;
128import android.view.ViewRootImpl;
129import android.view.ViewStructure;
130import android.view.ViewTreeObserver;
131import android.view.accessibility.AccessibilityEvent;
132import android.view.accessibility.AccessibilityManager;
133import android.view.accessibility.AccessibilityNodeInfo;
134import android.view.animation.AnimationUtils;
135import android.view.inputmethod.BaseInputConnection;
136import android.view.inputmethod.CompletionInfo;
137import android.view.inputmethod.CorrectionInfo;
138import android.view.inputmethod.EditorInfo;
139import android.view.inputmethod.ExtractedText;
140import android.view.inputmethod.ExtractedTextRequest;
141import android.view.inputmethod.InputConnection;
142import android.view.inputmethod.InputMethodManager;
143import android.view.textservice.SpellCheckerSubtype;
144import android.view.textservice.TextServicesManager;
145import android.widget.RemoteViews.RemoteView;
146
147import com.android.internal.annotations.VisibleForTesting;
148import com.android.internal.util.FastMath;
149import com.android.internal.widget.EditableInputConnection;
150
151import org.xmlpull.v1.XmlPullParserException;
152
153import java.io.IOException;
154import java.lang.ref.WeakReference;
155import java.util.ArrayList;
156import java.util.Locale;
157
158/**
159 * Displays text to the user and optionally allows them to edit it.  A TextView
160 * is a complete text editor, however the basic class is configured to not
161 * allow editing; see {@link EditText} for a subclass that configures the text
162 * view for editing.
163 *
164 * <p>
165 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
166 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
167 * android:textIsSelectable} to "true" or call
168 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
169 * allows users to make selection gestures in the TextView, which in turn triggers the system's
170 * built-in copy/paste controls.
171 * <p>
172 * <b>XML attributes</b>
173 * <p>
174 * See {@link android.R.styleable#TextView TextView Attributes},
175 * {@link android.R.styleable#View View Attributes}
176 *
177 * @attr ref android.R.styleable#TextView_text
178 * @attr ref android.R.styleable#TextView_bufferType
179 * @attr ref android.R.styleable#TextView_hint
180 * @attr ref android.R.styleable#TextView_textColor
181 * @attr ref android.R.styleable#TextView_textColorHighlight
182 * @attr ref android.R.styleable#TextView_textColorHint
183 * @attr ref android.R.styleable#TextView_textAppearance
184 * @attr ref android.R.styleable#TextView_textColorLink
185 * @attr ref android.R.styleable#TextView_textSize
186 * @attr ref android.R.styleable#TextView_textScaleX
187 * @attr ref android.R.styleable#TextView_fontFamily
188 * @attr ref android.R.styleable#TextView_typeface
189 * @attr ref android.R.styleable#TextView_textStyle
190 * @attr ref android.R.styleable#TextView_cursorVisible
191 * @attr ref android.R.styleable#TextView_maxLines
192 * @attr ref android.R.styleable#TextView_maxHeight
193 * @attr ref android.R.styleable#TextView_lines
194 * @attr ref android.R.styleable#TextView_height
195 * @attr ref android.R.styleable#TextView_minLines
196 * @attr ref android.R.styleable#TextView_minHeight
197 * @attr ref android.R.styleable#TextView_maxEms
198 * @attr ref android.R.styleable#TextView_maxWidth
199 * @attr ref android.R.styleable#TextView_ems
200 * @attr ref android.R.styleable#TextView_width
201 * @attr ref android.R.styleable#TextView_minEms
202 * @attr ref android.R.styleable#TextView_minWidth
203 * @attr ref android.R.styleable#TextView_gravity
204 * @attr ref android.R.styleable#TextView_scrollHorizontally
205 * @attr ref android.R.styleable#TextView_password
206 * @attr ref android.R.styleable#TextView_singleLine
207 * @attr ref android.R.styleable#TextView_selectAllOnFocus
208 * @attr ref android.R.styleable#TextView_includeFontPadding
209 * @attr ref android.R.styleable#TextView_maxLength
210 * @attr ref android.R.styleable#TextView_shadowColor
211 * @attr ref android.R.styleable#TextView_shadowDx
212 * @attr ref android.R.styleable#TextView_shadowDy
213 * @attr ref android.R.styleable#TextView_shadowRadius
214 * @attr ref android.R.styleable#TextView_autoLink
215 * @attr ref android.R.styleable#TextView_linksClickable
216 * @attr ref android.R.styleable#TextView_numeric
217 * @attr ref android.R.styleable#TextView_digits
218 * @attr ref android.R.styleable#TextView_phoneNumber
219 * @attr ref android.R.styleable#TextView_inputMethod
220 * @attr ref android.R.styleable#TextView_capitalize
221 * @attr ref android.R.styleable#TextView_autoText
222 * @attr ref android.R.styleable#TextView_editable
223 * @attr ref android.R.styleable#TextView_freezesText
224 * @attr ref android.R.styleable#TextView_ellipsize
225 * @attr ref android.R.styleable#TextView_drawableTop
226 * @attr ref android.R.styleable#TextView_drawableBottom
227 * @attr ref android.R.styleable#TextView_drawableRight
228 * @attr ref android.R.styleable#TextView_drawableLeft
229 * @attr ref android.R.styleable#TextView_drawableStart
230 * @attr ref android.R.styleable#TextView_drawableEnd
231 * @attr ref android.R.styleable#TextView_drawablePadding
232 * @attr ref android.R.styleable#TextView_drawableTint
233 * @attr ref android.R.styleable#TextView_drawableTintMode
234 * @attr ref android.R.styleable#TextView_lineSpacingExtra
235 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
236 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
237 * @attr ref android.R.styleable#TextView_inputType
238 * @attr ref android.R.styleable#TextView_imeOptions
239 * @attr ref android.R.styleable#TextView_privateImeOptions
240 * @attr ref android.R.styleable#TextView_imeActionLabel
241 * @attr ref android.R.styleable#TextView_imeActionId
242 * @attr ref android.R.styleable#TextView_editorExtras
243 * @attr ref android.R.styleable#TextView_elegantTextHeight
244 * @attr ref android.R.styleable#TextView_letterSpacing
245 * @attr ref android.R.styleable#TextView_fontFeatureSettings
246 * @attr ref android.R.styleable#TextView_breakStrategy
247 * @attr ref android.R.styleable#TextView_hyphenationFrequency
248 */
249@RemoteView
250public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
251    static final String LOG_TAG = "TextView";
252    static final boolean DEBUG_EXTRACT = false;
253
254    // Enum for the "typeface" XML parameter.
255    // TODO: How can we get this from the XML instead of hardcoding it here?
256    private static final int SANS = 1;
257    private static final int SERIF = 2;
258    private static final int MONOSPACE = 3;
259
260    // Bitfield for the "numeric" XML parameter.
261    // TODO: How can we get this from the XML instead of hardcoding it here?
262    private static final int SIGNED = 2;
263    private static final int DECIMAL = 4;
264
265    /**
266     * Draw marquee text with fading edges as usual
267     */
268    private static final int MARQUEE_FADE_NORMAL = 0;
269
270    /**
271     * Draw marquee text as ellipsize end while inactive instead of with the fade.
272     * (Useful for devices where the fade can be expensive if overdone)
273     */
274    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
275
276    /**
277     * Draw marquee text with fading edges because it is currently active/animating.
278     */
279    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
280
281    private static final int LINES = 1;
282    private static final int EMS = LINES;
283    private static final int PIXELS = 2;
284
285    private static final RectF TEMP_RECTF = new RectF();
286
287    // XXX should be much larger
288    private static final int VERY_WIDE = 1024*1024;
289    private static final int ANIMATED_SCROLL_GAP = 250;
290
291    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
292    private static final Spanned EMPTY_SPANNED = new SpannedString("");
293
294    private static final int CHANGE_WATCHER_PRIORITY = 100;
295
296    // New state used to change background based on whether this TextView is multiline.
297    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
298
299    // Accessibility action to share selected text.
300    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
301
302    /**
303     * @hide
304     */
305    // Accessibility action start id for "process text" actions.
306    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
307
308    /**
309     * @hide
310     */
311    static final int PROCESS_TEXT_REQUEST_CODE = 100;
312
313    /**
314     *  Return code of {@link #doKeyDown}.
315     */
316    private static final int KEY_EVENT_NOT_HANDLED = 0;
317    private static final int KEY_EVENT_HANDLED = -1;
318    private static final int KEY_DOWN_HANDLED_BY_KEY_LISTENER = 1;
319    private static final int KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD = 2;
320
321    // System wide time for last cut, copy or text changed action.
322    static long sLastCutCopyOrTextChangedTime;
323
324    private ColorStateList mTextColor;
325    private ColorStateList mHintTextColor;
326    private ColorStateList mLinkTextColor;
327    @ViewDebug.ExportedProperty(category = "text")
328    private int mCurTextColor;
329    private int mCurHintTextColor;
330    private boolean mFreezesText;
331    private boolean mDispatchTemporaryDetach;
332
333    /** Whether this view is temporarily detached from the parent view. */
334    boolean mTemporaryDetach;
335
336    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
337    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
338
339    private float mShadowRadius, mShadowDx, mShadowDy;
340    private int mShadowColor;
341
342    private boolean mPreDrawRegistered;
343    private boolean mPreDrawListenerDetached;
344
345    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
346    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
347    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
348    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
349    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
350    private boolean mPreventDefaultMovement;
351
352    private TextUtils.TruncateAt mEllipsize;
353
354    static class Drawables {
355        static final int LEFT = 0;
356        static final int TOP = 1;
357        static final int RIGHT = 2;
358        static final int BOTTOM = 3;
359
360        static final int DRAWABLE_NONE = -1;
361        static final int DRAWABLE_RIGHT = 0;
362        static final int DRAWABLE_LEFT = 1;
363
364        final Rect mCompoundRect = new Rect();
365
366        final Drawable[] mShowing = new Drawable[4];
367
368        ColorStateList mTintList;
369        PorterDuff.Mode mTintMode;
370        boolean mHasTint;
371        boolean mHasTintMode;
372
373        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
374        Drawable mDrawableLeftInitial, mDrawableRightInitial;
375
376        boolean mIsRtlCompatibilityMode;
377        boolean mOverride;
378
379        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
380                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
381
382        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
383                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
384
385        int mDrawablePadding;
386
387        int mDrawableSaved = DRAWABLE_NONE;
388
389        public Drawables(Context context) {
390            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
391            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
392                !context.getApplicationInfo().hasRtlSupport());
393            mOverride = false;
394        }
395
396        /**
397         * @return {@code true} if this object contains metadata that needs to
398         *         be retained, {@code false} otherwise
399         */
400        public boolean hasMetadata() {
401            return mDrawablePadding != 0 || mHasTintMode || mHasTint;
402        }
403
404        /**
405         * Updates the list of displayed drawables to account for the current
406         * layout direction.
407         *
408         * @param layoutDirection the current layout direction
409         * @return {@code true} if the displayed drawables changed
410         */
411        public boolean resolveWithLayoutDirection(int layoutDirection) {
412            final Drawable previousLeft = mShowing[Drawables.LEFT];
413            final Drawable previousRight = mShowing[Drawables.RIGHT];
414
415            // First reset "left" and "right" drawables to their initial values
416            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
417            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
418
419            if (mIsRtlCompatibilityMode) {
420                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
421                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
422                    mShowing[Drawables.LEFT] = mDrawableStart;
423                    mDrawableSizeLeft = mDrawableSizeStart;
424                    mDrawableHeightLeft = mDrawableHeightStart;
425                }
426                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
427                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
428                    mShowing[Drawables.RIGHT] = mDrawableEnd;
429                    mDrawableSizeRight = mDrawableSizeEnd;
430                    mDrawableHeightRight = mDrawableHeightEnd;
431                }
432            } else {
433                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
434                // drawable if and only if they have been defined
435                switch(layoutDirection) {
436                    case LAYOUT_DIRECTION_RTL:
437                        if (mOverride) {
438                            mShowing[Drawables.RIGHT] = mDrawableStart;
439                            mDrawableSizeRight = mDrawableSizeStart;
440                            mDrawableHeightRight = mDrawableHeightStart;
441
442                            mShowing[Drawables.LEFT] = mDrawableEnd;
443                            mDrawableSizeLeft = mDrawableSizeEnd;
444                            mDrawableHeightLeft = mDrawableHeightEnd;
445                        }
446                        break;
447
448                    case LAYOUT_DIRECTION_LTR:
449                    default:
450                        if (mOverride) {
451                            mShowing[Drawables.LEFT] = mDrawableStart;
452                            mDrawableSizeLeft = mDrawableSizeStart;
453                            mDrawableHeightLeft = mDrawableHeightStart;
454
455                            mShowing[Drawables.RIGHT] = mDrawableEnd;
456                            mDrawableSizeRight = mDrawableSizeEnd;
457                            mDrawableHeightRight = mDrawableHeightEnd;
458                        }
459                        break;
460                }
461            }
462
463            applyErrorDrawableIfNeeded(layoutDirection);
464
465            return mShowing[Drawables.LEFT] != previousLeft
466                    || mShowing[Drawables.RIGHT] != previousRight;
467        }
468
469        public void setErrorDrawable(Drawable dr, TextView tv) {
470            if (mDrawableError != dr && mDrawableError != null) {
471                mDrawableError.setCallback(null);
472            }
473            mDrawableError = dr;
474
475            if (mDrawableError != null) {
476                final Rect compoundRect = mCompoundRect;
477                final int[] state = tv.getDrawableState();
478
479                mDrawableError.setState(state);
480                mDrawableError.copyBounds(compoundRect);
481                mDrawableError.setCallback(tv);
482                mDrawableSizeError = compoundRect.width();
483                mDrawableHeightError = compoundRect.height();
484            } else {
485                mDrawableSizeError = mDrawableHeightError = 0;
486            }
487        }
488
489        private void applyErrorDrawableIfNeeded(int layoutDirection) {
490            // first restore the initial state if needed
491            switch (mDrawableSaved) {
492                case DRAWABLE_LEFT:
493                    mShowing[Drawables.LEFT] = mDrawableTemp;
494                    mDrawableSizeLeft = mDrawableSizeTemp;
495                    mDrawableHeightLeft = mDrawableHeightTemp;
496                    break;
497                case DRAWABLE_RIGHT:
498                    mShowing[Drawables.RIGHT] = mDrawableTemp;
499                    mDrawableSizeRight = mDrawableSizeTemp;
500                    mDrawableHeightRight = mDrawableHeightTemp;
501                    break;
502                case DRAWABLE_NONE:
503                default:
504            }
505            // then, if needed, assign the Error drawable to the correct location
506            if (mDrawableError != null) {
507                switch(layoutDirection) {
508                    case LAYOUT_DIRECTION_RTL:
509                        mDrawableSaved = DRAWABLE_LEFT;
510
511                        mDrawableTemp = mShowing[Drawables.LEFT];
512                        mDrawableSizeTemp = mDrawableSizeLeft;
513                        mDrawableHeightTemp = mDrawableHeightLeft;
514
515                        mShowing[Drawables.LEFT] = mDrawableError;
516                        mDrawableSizeLeft = mDrawableSizeError;
517                        mDrawableHeightLeft = mDrawableHeightError;
518                        break;
519                    case LAYOUT_DIRECTION_LTR:
520                    default:
521                        mDrawableSaved = DRAWABLE_RIGHT;
522
523                        mDrawableTemp = mShowing[Drawables.RIGHT];
524                        mDrawableSizeTemp = mDrawableSizeRight;
525                        mDrawableHeightTemp = mDrawableHeightRight;
526
527                        mShowing[Drawables.RIGHT] = mDrawableError;
528                        mDrawableSizeRight = mDrawableSizeError;
529                        mDrawableHeightRight = mDrawableHeightError;
530                        break;
531                }
532            }
533        }
534    }
535
536    Drawables mDrawables;
537
538    private CharWrapper mCharWrapper;
539
540    private Marquee mMarquee;
541    private boolean mRestartMarquee;
542
543    private int mMarqueeRepeatLimit = 3;
544
545    private int mLastLayoutDirection = -1;
546
547    /**
548     * On some devices the fading edges add a performance penalty if used
549     * extensively in the same layout. This mode indicates how the marquee
550     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
551     */
552    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
553
554    /**
555     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
556     * the layout that should be used when the mode switches.
557     */
558    private Layout mSavedMarqueeModeLayout;
559
560    @ViewDebug.ExportedProperty(category = "text")
561    private CharSequence mText;
562    private CharSequence mTransformed;
563    private BufferType mBufferType = BufferType.NORMAL;
564
565    private CharSequence mHint;
566    private Layout mHintLayout;
567
568    private MovementMethod mMovement;
569
570    private TransformationMethod mTransformation;
571    private boolean mAllowTransformationLengthChange;
572    private ChangeWatcher mChangeWatcher;
573
574    private ArrayList<TextWatcher> mListeners;
575
576    // display attributes
577    private final TextPaint mTextPaint;
578    private boolean mUserSetTextScaleX;
579    private Layout mLayout;
580    private boolean mLocalesChanged = false;
581
582    @ViewDebug.ExportedProperty(category = "text")
583    private int mGravity = Gravity.TOP | Gravity.START;
584    private boolean mHorizontallyScrolling;
585
586    private int mAutoLinkMask;
587    private boolean mLinksClickable = true;
588
589    private float mSpacingMult = 1.0f;
590    private float mSpacingAdd = 0.0f;
591
592    private int mBreakStrategy;
593    private int mHyphenationFrequency;
594
595    private int mMaximum = Integer.MAX_VALUE;
596    private int mMaxMode = LINES;
597    private int mMinimum = 0;
598    private int mMinMode = LINES;
599
600    private int mOldMaximum = mMaximum;
601    private int mOldMaxMode = mMaxMode;
602
603    private int mMaxWidth = Integer.MAX_VALUE;
604    private int mMaxWidthMode = PIXELS;
605    private int mMinWidth = 0;
606    private int mMinWidthMode = PIXELS;
607
608    private boolean mSingleLine;
609    private int mDesiredHeightAtMeasure = -1;
610    private boolean mIncludePad = true;
611    private int mDeferScroll = -1;
612
613    // tmp primitives, so we don't alloc them on each draw
614    private Rect mTempRect;
615    private long mLastScroll;
616    private Scroller mScroller;
617
618    private BoringLayout.Metrics mBoring, mHintBoring;
619    private BoringLayout mSavedLayout, mSavedHintLayout;
620
621    private TextDirectionHeuristic mTextDir;
622
623    private InputFilter[] mFilters = NO_FILTERS;
624
625    private volatile Locale mCurrentSpellCheckerLocaleCache;
626
627    // It is possible to have a selection even when mEditor is null (programmatically set, like when
628    // a link is pressed). These highlight-related fields do not go in mEditor.
629    int mHighlightColor = 0x6633B5E5;
630    private Path mHighlightPath;
631    private final Paint mHighlightPaint;
632    private boolean mHighlightPathBogus = true;
633
634    // Although these fields are specific to editable text, they are not added to Editor because
635    // they are defined by the TextView's style and are theme-dependent.
636    int mCursorDrawableRes;
637    // These six fields, could be moved to Editor, since we know their default values and we
638    // could condition the creation of the Editor to a non standard value. This is however
639    // brittle since the hardcoded values here (such as
640    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
641    // default style is modified.
642    int mTextSelectHandleLeftRes;
643    int mTextSelectHandleRightRes;
644    int mTextSelectHandleRes;
645    int mTextEditSuggestionItemLayout;
646    int mTextEditSuggestionContainerLayout;
647    int mTextEditSuggestionHighlightStyle;
648
649    /**
650     * EditText specific data, created on demand when one of the Editor fields is used.
651     * See {@link #createEditorIfNeeded()}.
652     */
653    private Editor mEditor;
654
655    private static final int DEVICE_PROVISIONED_UNKNOWN = 0;
656    private static final int DEVICE_PROVISIONED_NO = 1;
657    private static final int DEVICE_PROVISIONED_YES = 2;
658
659    /**
660     * Some special options such as sharing selected text should only be shown if the device
661     * is provisioned. Only check the provisioned state once for a given view instance.
662     */
663    private int mDeviceProvisionedState = DEVICE_PROVISIONED_UNKNOWN;
664
665    /*
666     * Kick-start the font cache for the zygote process (to pay the cost of
667     * initializing freetype for our default font only once).
668     */
669    static {
670        Paint p = new Paint();
671        p.setAntiAlias(true);
672        // We don't care about the result, just the side-effect of measuring.
673        p.measureText("H");
674    }
675
676    /**
677     * Interface definition for a callback to be invoked when an action is
678     * performed on the editor.
679     */
680    public interface OnEditorActionListener {
681        /**
682         * Called when an action is being performed.
683         *
684         * @param v The view that was clicked.
685         * @param actionId Identifier of the action.  This will be either the
686         * identifier you supplied, or {@link EditorInfo#IME_NULL
687         * EditorInfo.IME_NULL} if being called due to the enter key
688         * being pressed.
689         * @param event If triggered by an enter key, this is the event;
690         * otherwise, this is null.
691         * @return Return true if you have consumed the action, else false.
692         */
693        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
694    }
695
696    public TextView(Context context) {
697        this(context, null);
698    }
699
700    public TextView(Context context, @Nullable AttributeSet attrs) {
701        this(context, attrs, com.android.internal.R.attr.textViewStyle);
702    }
703
704    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
705        this(context, attrs, defStyleAttr, 0);
706    }
707
708    @SuppressWarnings("deprecation")
709    public TextView(
710            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
711        super(context, attrs, defStyleAttr, defStyleRes);
712
713        mText = "";
714
715        final Resources res = getResources();
716        final CompatibilityInfo compat = res.getCompatibilityInfo();
717
718        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
719        mTextPaint.density = res.getDisplayMetrics().density;
720        mTextPaint.setCompatibilityScaling(compat.applicationScale);
721
722        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
723        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
724
725        mMovement = getDefaultMovementMethod();
726
727        mTransformation = null;
728
729        int textColorHighlight = 0;
730        ColorStateList textColor = null;
731        ColorStateList textColorHint = null;
732        ColorStateList textColorLink = null;
733        int textSize = 15;
734        String fontFamily = null;
735        boolean fontFamilyExplicit = false;
736        int typefaceIndex = -1;
737        int styleIndex = -1;
738        boolean allCaps = false;
739        int shadowcolor = 0;
740        float dx = 0, dy = 0, r = 0;
741        boolean elegant = false;
742        float letterSpacing = 0;
743        String fontFeatureSettings = null;
744        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
745        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
746
747        final Resources.Theme theme = context.getTheme();
748
749        /*
750         * Look the appearance up without checking first if it exists because
751         * almost every TextView has one and it greatly simplifies the logic
752         * to be able to parse the appearance first and then let specific tags
753         * for this View override it.
754         */
755        TypedArray a = theme.obtainStyledAttributes(attrs,
756                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
757        TypedArray appearance = null;
758        int ap = a.getResourceId(
759                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
760        a.recycle();
761        if (ap != -1) {
762            appearance = theme.obtainStyledAttributes(
763                    ap, com.android.internal.R.styleable.TextAppearance);
764        }
765        if (appearance != null) {
766            int n = appearance.getIndexCount();
767            for (int i = 0; i < n; i++) {
768                int attr = appearance.getIndex(i);
769
770                switch (attr) {
771                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
772                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
773                    break;
774
775                case com.android.internal.R.styleable.TextAppearance_textColor:
776                    textColor = appearance.getColorStateList(attr);
777                    break;
778
779                case com.android.internal.R.styleable.TextAppearance_textColorHint:
780                    textColorHint = appearance.getColorStateList(attr);
781                    break;
782
783                case com.android.internal.R.styleable.TextAppearance_textColorLink:
784                    textColorLink = appearance.getColorStateList(attr);
785                    break;
786
787                case com.android.internal.R.styleable.TextAppearance_textSize:
788                    textSize = appearance.getDimensionPixelSize(attr, textSize);
789                    break;
790
791                case com.android.internal.R.styleable.TextAppearance_typeface:
792                    typefaceIndex = appearance.getInt(attr, -1);
793                    break;
794
795                case com.android.internal.R.styleable.TextAppearance_fontFamily:
796                    fontFamily = appearance.getString(attr);
797                    break;
798
799                case com.android.internal.R.styleable.TextAppearance_textStyle:
800                    styleIndex = appearance.getInt(attr, -1);
801                    break;
802
803                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
804                    allCaps = appearance.getBoolean(attr, false);
805                    break;
806
807                case com.android.internal.R.styleable.TextAppearance_shadowColor:
808                    shadowcolor = appearance.getInt(attr, 0);
809                    break;
810
811                case com.android.internal.R.styleable.TextAppearance_shadowDx:
812                    dx = appearance.getFloat(attr, 0);
813                    break;
814
815                case com.android.internal.R.styleable.TextAppearance_shadowDy:
816                    dy = appearance.getFloat(attr, 0);
817                    break;
818
819                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
820                    r = appearance.getFloat(attr, 0);
821                    break;
822
823                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
824                    elegant = appearance.getBoolean(attr, false);
825                    break;
826
827                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
828                    letterSpacing = appearance.getFloat(attr, 0);
829                    break;
830
831                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
832                    fontFeatureSettings = appearance.getString(attr);
833                    break;
834                }
835            }
836
837            appearance.recycle();
838        }
839
840        boolean editable = getDefaultEditable();
841        CharSequence inputMethod = null;
842        int numeric = 0;
843        CharSequence digits = null;
844        boolean phone = false;
845        boolean autotext = false;
846        int autocap = -1;
847        int buffertype = 0;
848        boolean selectallonfocus = false;
849        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
850            drawableBottom = null, drawableStart = null, drawableEnd = null;
851        ColorStateList drawableTint = null;
852        PorterDuff.Mode drawableTintMode = null;
853        int drawablePadding = 0;
854        int ellipsize = -1;
855        boolean singleLine = false;
856        int maxlength = -1;
857        CharSequence text = "";
858        CharSequence hint = null;
859        boolean password = false;
860        int inputType = EditorInfo.TYPE_NULL;
861
862        a = theme.obtainStyledAttributes(
863                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
864
865        int n = a.getIndexCount();
866        for (int i = 0; i < n; i++) {
867            int attr = a.getIndex(i);
868
869            switch (attr) {
870            case com.android.internal.R.styleable.TextView_editable:
871                editable = a.getBoolean(attr, editable);
872                break;
873
874            case com.android.internal.R.styleable.TextView_inputMethod:
875                inputMethod = a.getText(attr);
876                break;
877
878            case com.android.internal.R.styleable.TextView_numeric:
879                numeric = a.getInt(attr, numeric);
880                break;
881
882            case com.android.internal.R.styleable.TextView_digits:
883                digits = a.getText(attr);
884                break;
885
886            case com.android.internal.R.styleable.TextView_phoneNumber:
887                phone = a.getBoolean(attr, phone);
888                break;
889
890            case com.android.internal.R.styleable.TextView_autoText:
891                autotext = a.getBoolean(attr, autotext);
892                break;
893
894            case com.android.internal.R.styleable.TextView_capitalize:
895                autocap = a.getInt(attr, autocap);
896                break;
897
898            case com.android.internal.R.styleable.TextView_bufferType:
899                buffertype = a.getInt(attr, buffertype);
900                break;
901
902            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
903                selectallonfocus = a.getBoolean(attr, selectallonfocus);
904                break;
905
906            case com.android.internal.R.styleable.TextView_autoLink:
907                mAutoLinkMask = a.getInt(attr, 0);
908                break;
909
910            case com.android.internal.R.styleable.TextView_linksClickable:
911                mLinksClickable = a.getBoolean(attr, true);
912                break;
913
914            case com.android.internal.R.styleable.TextView_drawableLeft:
915                drawableLeft = a.getDrawable(attr);
916                break;
917
918            case com.android.internal.R.styleable.TextView_drawableTop:
919                drawableTop = a.getDrawable(attr);
920                break;
921
922            case com.android.internal.R.styleable.TextView_drawableRight:
923                drawableRight = a.getDrawable(attr);
924                break;
925
926            case com.android.internal.R.styleable.TextView_drawableBottom:
927                drawableBottom = a.getDrawable(attr);
928                break;
929
930            case com.android.internal.R.styleable.TextView_drawableStart:
931                drawableStart = a.getDrawable(attr);
932                break;
933
934            case com.android.internal.R.styleable.TextView_drawableEnd:
935                drawableEnd = a.getDrawable(attr);
936                break;
937
938            case com.android.internal.R.styleable.TextView_drawableTint:
939                drawableTint = a.getColorStateList(attr);
940                break;
941
942            case com.android.internal.R.styleable.TextView_drawableTintMode:
943                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
944                break;
945
946            case com.android.internal.R.styleable.TextView_drawablePadding:
947                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
948                break;
949
950            case com.android.internal.R.styleable.TextView_maxLines:
951                setMaxLines(a.getInt(attr, -1));
952                break;
953
954            case com.android.internal.R.styleable.TextView_maxHeight:
955                setMaxHeight(a.getDimensionPixelSize(attr, -1));
956                break;
957
958            case com.android.internal.R.styleable.TextView_lines:
959                setLines(a.getInt(attr, -1));
960                break;
961
962            case com.android.internal.R.styleable.TextView_height:
963                setHeight(a.getDimensionPixelSize(attr, -1));
964                break;
965
966            case com.android.internal.R.styleable.TextView_minLines:
967                setMinLines(a.getInt(attr, -1));
968                break;
969
970            case com.android.internal.R.styleable.TextView_minHeight:
971                setMinHeight(a.getDimensionPixelSize(attr, -1));
972                break;
973
974            case com.android.internal.R.styleable.TextView_maxEms:
975                setMaxEms(a.getInt(attr, -1));
976                break;
977
978            case com.android.internal.R.styleable.TextView_maxWidth:
979                setMaxWidth(a.getDimensionPixelSize(attr, -1));
980                break;
981
982            case com.android.internal.R.styleable.TextView_ems:
983                setEms(a.getInt(attr, -1));
984                break;
985
986            case com.android.internal.R.styleable.TextView_width:
987                setWidth(a.getDimensionPixelSize(attr, -1));
988                break;
989
990            case com.android.internal.R.styleable.TextView_minEms:
991                setMinEms(a.getInt(attr, -1));
992                break;
993
994            case com.android.internal.R.styleable.TextView_minWidth:
995                setMinWidth(a.getDimensionPixelSize(attr, -1));
996                break;
997
998            case com.android.internal.R.styleable.TextView_gravity:
999                setGravity(a.getInt(attr, -1));
1000                break;
1001
1002            case com.android.internal.R.styleable.TextView_hint:
1003                hint = a.getText(attr);
1004                break;
1005
1006            case com.android.internal.R.styleable.TextView_text:
1007                text = a.getText(attr);
1008                break;
1009
1010            case com.android.internal.R.styleable.TextView_scrollHorizontally:
1011                if (a.getBoolean(attr, false)) {
1012                    setHorizontallyScrolling(true);
1013                }
1014                break;
1015
1016            case com.android.internal.R.styleable.TextView_singleLine:
1017                singleLine = a.getBoolean(attr, singleLine);
1018                break;
1019
1020            case com.android.internal.R.styleable.TextView_ellipsize:
1021                ellipsize = a.getInt(attr, ellipsize);
1022                break;
1023
1024            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1025                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1026                break;
1027
1028            case com.android.internal.R.styleable.TextView_includeFontPadding:
1029                if (!a.getBoolean(attr, true)) {
1030                    setIncludeFontPadding(false);
1031                }
1032                break;
1033
1034            case com.android.internal.R.styleable.TextView_cursorVisible:
1035                if (!a.getBoolean(attr, true)) {
1036                    setCursorVisible(false);
1037                }
1038                break;
1039
1040            case com.android.internal.R.styleable.TextView_maxLength:
1041                maxlength = a.getInt(attr, -1);
1042                break;
1043
1044            case com.android.internal.R.styleable.TextView_textScaleX:
1045                setTextScaleX(a.getFloat(attr, 1.0f));
1046                break;
1047
1048            case com.android.internal.R.styleable.TextView_freezesText:
1049                mFreezesText = a.getBoolean(attr, false);
1050                break;
1051
1052            case com.android.internal.R.styleable.TextView_shadowColor:
1053                shadowcolor = a.getInt(attr, 0);
1054                break;
1055
1056            case com.android.internal.R.styleable.TextView_shadowDx:
1057                dx = a.getFloat(attr, 0);
1058                break;
1059
1060            case com.android.internal.R.styleable.TextView_shadowDy:
1061                dy = a.getFloat(attr, 0);
1062                break;
1063
1064            case com.android.internal.R.styleable.TextView_shadowRadius:
1065                r = a.getFloat(attr, 0);
1066                break;
1067
1068            case com.android.internal.R.styleable.TextView_enabled:
1069                setEnabled(a.getBoolean(attr, isEnabled()));
1070                break;
1071
1072            case com.android.internal.R.styleable.TextView_textColorHighlight:
1073                textColorHighlight = a.getColor(attr, textColorHighlight);
1074                break;
1075
1076            case com.android.internal.R.styleable.TextView_textColor:
1077                textColor = a.getColorStateList(attr);
1078                break;
1079
1080            case com.android.internal.R.styleable.TextView_textColorHint:
1081                textColorHint = a.getColorStateList(attr);
1082                break;
1083
1084            case com.android.internal.R.styleable.TextView_textColorLink:
1085                textColorLink = a.getColorStateList(attr);
1086                break;
1087
1088            case com.android.internal.R.styleable.TextView_textSize:
1089                textSize = a.getDimensionPixelSize(attr, textSize);
1090                break;
1091
1092            case com.android.internal.R.styleable.TextView_typeface:
1093                typefaceIndex = a.getInt(attr, typefaceIndex);
1094                break;
1095
1096            case com.android.internal.R.styleable.TextView_textStyle:
1097                styleIndex = a.getInt(attr, styleIndex);
1098                break;
1099
1100            case com.android.internal.R.styleable.TextView_fontFamily:
1101                fontFamily = a.getString(attr);
1102                fontFamilyExplicit = true;
1103                break;
1104
1105            case com.android.internal.R.styleable.TextView_password:
1106                password = a.getBoolean(attr, password);
1107                break;
1108
1109            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1110                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1111                break;
1112
1113            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1114                mSpacingMult = a.getFloat(attr, mSpacingMult);
1115                break;
1116
1117            case com.android.internal.R.styleable.TextView_inputType:
1118                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1119                break;
1120
1121            case com.android.internal.R.styleable.TextView_allowUndo:
1122                createEditorIfNeeded();
1123                mEditor.mAllowUndo = a.getBoolean(attr, true);
1124                break;
1125
1126            case com.android.internal.R.styleable.TextView_imeOptions:
1127                createEditorIfNeeded();
1128                mEditor.createInputContentTypeIfNeeded();
1129                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1130                        mEditor.mInputContentType.imeOptions);
1131                break;
1132
1133            case com.android.internal.R.styleable.TextView_imeActionLabel:
1134                createEditorIfNeeded();
1135                mEditor.createInputContentTypeIfNeeded();
1136                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1137                break;
1138
1139            case com.android.internal.R.styleable.TextView_imeActionId:
1140                createEditorIfNeeded();
1141                mEditor.createInputContentTypeIfNeeded();
1142                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1143                        mEditor.mInputContentType.imeActionId);
1144                break;
1145
1146            case com.android.internal.R.styleable.TextView_privateImeOptions:
1147                setPrivateImeOptions(a.getString(attr));
1148                break;
1149
1150            case com.android.internal.R.styleable.TextView_editorExtras:
1151                try {
1152                    setInputExtras(a.getResourceId(attr, 0));
1153                } catch (XmlPullParserException e) {
1154                    Log.w(LOG_TAG, "Failure reading input extras", e);
1155                } catch (IOException e) {
1156                    Log.w(LOG_TAG, "Failure reading input extras", e);
1157                }
1158                break;
1159
1160            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1161                mCursorDrawableRes = a.getResourceId(attr, 0);
1162                break;
1163
1164            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1165                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1166                break;
1167
1168            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1169                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1170                break;
1171
1172            case com.android.internal.R.styleable.TextView_textSelectHandle:
1173                mTextSelectHandleRes = a.getResourceId(attr, 0);
1174                break;
1175
1176            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1177                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1178                break;
1179
1180            case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1181                mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1182                break;
1183
1184            case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1185                mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1186                break;
1187
1188            case com.android.internal.R.styleable.TextView_textIsSelectable:
1189                setTextIsSelectable(a.getBoolean(attr, false));
1190                break;
1191
1192            case com.android.internal.R.styleable.TextView_textAllCaps:
1193                allCaps = a.getBoolean(attr, false);
1194                break;
1195
1196            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1197                elegant = a.getBoolean(attr, false);
1198                break;
1199
1200            case com.android.internal.R.styleable.TextView_letterSpacing:
1201                letterSpacing = a.getFloat(attr, 0);
1202                break;
1203
1204            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1205                fontFeatureSettings = a.getString(attr);
1206                break;
1207
1208            case com.android.internal.R.styleable.TextView_breakStrategy:
1209                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1210                break;
1211
1212            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1213                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1214                break;
1215            }
1216        }
1217        a.recycle();
1218
1219        BufferType bufferType = BufferType.EDITABLE;
1220
1221        final int variation =
1222                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1223        final boolean passwordInputType = variation
1224                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1225        final boolean webPasswordInputType = variation
1226                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1227        final boolean numberPasswordInputType = variation
1228                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1229
1230        if (inputMethod != null) {
1231            Class<?> c;
1232
1233            try {
1234                c = Class.forName(inputMethod.toString());
1235            } catch (ClassNotFoundException ex) {
1236                throw new RuntimeException(ex);
1237            }
1238
1239            try {
1240                createEditorIfNeeded();
1241                mEditor.mKeyListener = (KeyListener) c.newInstance();
1242            } catch (InstantiationException ex) {
1243                throw new RuntimeException(ex);
1244            } catch (IllegalAccessException ex) {
1245                throw new RuntimeException(ex);
1246            }
1247            try {
1248                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1249                        ? inputType
1250                        : mEditor.mKeyListener.getInputType();
1251            } catch (IncompatibleClassChangeError e) {
1252                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1253            }
1254        } else if (digits != null) {
1255            createEditorIfNeeded();
1256            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1257            // If no input type was specified, we will default to generic
1258            // text, since we can't tell the IME about the set of digits
1259            // that was selected.
1260            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1261                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1262        } else if (inputType != EditorInfo.TYPE_NULL) {
1263            setInputType(inputType, true);
1264            // If set, the input type overrides what was set using the deprecated singleLine flag.
1265            singleLine = !isMultilineInputType(inputType);
1266        } else if (phone) {
1267            createEditorIfNeeded();
1268            mEditor.mKeyListener = DialerKeyListener.getInstance();
1269            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1270        } else if (numeric != 0) {
1271            createEditorIfNeeded();
1272            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1273                                                   (numeric & DECIMAL) != 0);
1274            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1275            if ((numeric & SIGNED) != 0) {
1276                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1277            }
1278            if ((numeric & DECIMAL) != 0) {
1279                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1280            }
1281            mEditor.mInputType = inputType;
1282        } else if (autotext || autocap != -1) {
1283            TextKeyListener.Capitalize cap;
1284
1285            inputType = EditorInfo.TYPE_CLASS_TEXT;
1286
1287            switch (autocap) {
1288            case 1:
1289                cap = TextKeyListener.Capitalize.SENTENCES;
1290                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1291                break;
1292
1293            case 2:
1294                cap = TextKeyListener.Capitalize.WORDS;
1295                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1296                break;
1297
1298            case 3:
1299                cap = TextKeyListener.Capitalize.CHARACTERS;
1300                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1301                break;
1302
1303            default:
1304                cap = TextKeyListener.Capitalize.NONE;
1305                break;
1306            }
1307
1308            createEditorIfNeeded();
1309            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1310            mEditor.mInputType = inputType;
1311        } else if (isTextSelectable()) {
1312            // Prevent text changes from keyboard.
1313            if (mEditor != null) {
1314                mEditor.mKeyListener = null;
1315                mEditor.mInputType = EditorInfo.TYPE_NULL;
1316            }
1317            bufferType = BufferType.SPANNABLE;
1318            // So that selection can be changed using arrow keys and touch is handled.
1319            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1320        } else if (editable) {
1321            createEditorIfNeeded();
1322            mEditor.mKeyListener = TextKeyListener.getInstance();
1323            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1324        } else {
1325            if (mEditor != null) mEditor.mKeyListener = null;
1326
1327            switch (buffertype) {
1328                case 0:
1329                    bufferType = BufferType.NORMAL;
1330                    break;
1331                case 1:
1332                    bufferType = BufferType.SPANNABLE;
1333                    break;
1334                case 2:
1335                    bufferType = BufferType.EDITABLE;
1336                    break;
1337            }
1338        }
1339
1340        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1341                webPasswordInputType, numberPasswordInputType);
1342
1343        if (selectallonfocus) {
1344            createEditorIfNeeded();
1345            mEditor.mSelectAllOnFocus = true;
1346
1347            if (bufferType == BufferType.NORMAL)
1348                bufferType = BufferType.SPANNABLE;
1349        }
1350
1351        // Set up the tint (if needed) before setting the drawables so that it
1352        // gets applied correctly.
1353        if (drawableTint != null || drawableTintMode != null) {
1354            if (mDrawables == null) {
1355                mDrawables = new Drawables(context);
1356            }
1357            if (drawableTint != null) {
1358                mDrawables.mTintList = drawableTint;
1359                mDrawables.mHasTint = true;
1360            }
1361            if (drawableTintMode != null) {
1362                mDrawables.mTintMode = drawableTintMode;
1363                mDrawables.mHasTintMode = true;
1364            }
1365        }
1366
1367        // This call will save the initial left/right drawables
1368        setCompoundDrawablesWithIntrinsicBounds(
1369            drawableLeft, drawableTop, drawableRight, drawableBottom);
1370        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1371        setCompoundDrawablePadding(drawablePadding);
1372
1373        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1374        // of lines of height are unchanged for multi-line TextViews.
1375        setInputTypeSingleLine(singleLine);
1376        applySingleLine(singleLine, singleLine, singleLine);
1377
1378        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1379                ellipsize = 3; // END
1380        }
1381
1382        switch (ellipsize) {
1383            case 1:
1384                setEllipsize(TextUtils.TruncateAt.START);
1385                break;
1386            case 2:
1387                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1388                break;
1389            case 3:
1390                setEllipsize(TextUtils.TruncateAt.END);
1391                break;
1392            case 4:
1393                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1394                    setHorizontalFadingEdgeEnabled(true);
1395                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1396                } else {
1397                    setHorizontalFadingEdgeEnabled(false);
1398                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1399                }
1400                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1401                break;
1402        }
1403
1404        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1405        setHintTextColor(textColorHint);
1406        setLinkTextColor(textColorLink);
1407        if (textColorHighlight != 0) {
1408            setHighlightColor(textColorHighlight);
1409        }
1410        setRawTextSize(textSize);
1411        setElegantTextHeight(elegant);
1412        setLetterSpacing(letterSpacing);
1413        setFontFeatureSettings(fontFeatureSettings);
1414
1415        if (allCaps) {
1416            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1417        }
1418
1419        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1420            setTransformationMethod(PasswordTransformationMethod.getInstance());
1421            typefaceIndex = MONOSPACE;
1422        } else if (mEditor != null &&
1423                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1424                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1425            typefaceIndex = MONOSPACE;
1426        }
1427
1428        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1429            fontFamily = null;
1430        }
1431        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1432
1433        if (shadowcolor != 0) {
1434            setShadowLayer(r, dx, dy, shadowcolor);
1435        }
1436
1437        if (maxlength >= 0) {
1438            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1439        } else {
1440            setFilters(NO_FILTERS);
1441        }
1442
1443        setText(text, bufferType);
1444        if (hint != null) setHint(hint);
1445
1446        /*
1447         * Views are not normally focusable unless specified to be.
1448         * However, TextViews that have input or movement methods *are*
1449         * focusable by default.
1450         */
1451        a = context.obtainStyledAttributes(
1452                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1453
1454        boolean focusable = mMovement != null || getKeyListener() != null;
1455        boolean clickable = focusable || isClickable();
1456        boolean longClickable = focusable || isLongClickable();
1457
1458        n = a.getIndexCount();
1459        for (int i = 0; i < n; i++) {
1460            int attr = a.getIndex(i);
1461
1462            switch (attr) {
1463            case com.android.internal.R.styleable.View_focusable:
1464                focusable = a.getBoolean(attr, focusable);
1465                break;
1466
1467            case com.android.internal.R.styleable.View_clickable:
1468                clickable = a.getBoolean(attr, clickable);
1469                break;
1470
1471            case com.android.internal.R.styleable.View_longClickable:
1472                longClickable = a.getBoolean(attr, longClickable);
1473                break;
1474            }
1475        }
1476        a.recycle();
1477
1478        setFocusable(focusable);
1479        setClickable(clickable);
1480        setLongClickable(longClickable);
1481
1482        if (mEditor != null) mEditor.prepareCursorControllers();
1483
1484        // If not explicitly specified this view is important for accessibility.
1485        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1486            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1487        }
1488    }
1489
1490    private int[] parseDimensionArray(TypedArray dimens) {
1491        if (dimens == null) {
1492            return null;
1493        }
1494        int[] result = new int[dimens.length()];
1495        for (int i = 0; i < result.length; i++) {
1496            result[i] = dimens.getDimensionPixelSize(i, 0);
1497        }
1498        return result;
1499    }
1500
1501    /**
1502     * @hide
1503     */
1504    @Override
1505    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1506        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1507            if (resultCode == Activity.RESULT_OK && data != null) {
1508                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1509                if (result != null) {
1510                    if (isTextEditable()) {
1511                        replaceSelectionWithText(result);
1512                        if (mEditor != null) {
1513                            mEditor.refreshTextActionMode();
1514                        }
1515                    } else {
1516                        if (result.length() > 0) {
1517                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1518                                .show();
1519                        }
1520                    }
1521                }
1522            } else if (mText instanceof Spannable) {
1523                // Reset the selection.
1524                Selection.setSelection((Spannable) mText, getSelectionEnd());
1525            }
1526        }
1527    }
1528
1529    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1530        Typeface tf = null;
1531        if (familyName != null) {
1532            tf = Typeface.create(familyName, styleIndex);
1533            if (tf != null) {
1534                setTypeface(tf);
1535                return;
1536            }
1537        }
1538        switch (typefaceIndex) {
1539            case SANS:
1540                tf = Typeface.SANS_SERIF;
1541                break;
1542
1543            case SERIF:
1544                tf = Typeface.SERIF;
1545                break;
1546
1547            case MONOSPACE:
1548                tf = Typeface.MONOSPACE;
1549                break;
1550        }
1551
1552        setTypeface(tf, styleIndex);
1553    }
1554
1555    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1556        boolean hasRelativeDrawables = (start != null) || (end != null);
1557        if (hasRelativeDrawables) {
1558            Drawables dr = mDrawables;
1559            if (dr == null) {
1560                mDrawables = dr = new Drawables(getContext());
1561            }
1562            mDrawables.mOverride = true;
1563            final Rect compoundRect = dr.mCompoundRect;
1564            int[] state = getDrawableState();
1565            if (start != null) {
1566                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1567                start.setState(state);
1568                start.copyBounds(compoundRect);
1569                start.setCallback(this);
1570
1571                dr.mDrawableStart = start;
1572                dr.mDrawableSizeStart = compoundRect.width();
1573                dr.mDrawableHeightStart = compoundRect.height();
1574            } else {
1575                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1576            }
1577            if (end != null) {
1578                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1579                end.setState(state);
1580                end.copyBounds(compoundRect);
1581                end.setCallback(this);
1582
1583                dr.mDrawableEnd = end;
1584                dr.mDrawableSizeEnd = compoundRect.width();
1585                dr.mDrawableHeightEnd = compoundRect.height();
1586            } else {
1587                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1588            }
1589            resetResolvedDrawables();
1590            resolveDrawables();
1591            applyCompoundDrawableTint();
1592        }
1593    }
1594
1595    @Override
1596    public void setEnabled(boolean enabled) {
1597        if (enabled == isEnabled()) {
1598            return;
1599        }
1600
1601        if (!enabled) {
1602            // Hide the soft input if the currently active TextView is disabled
1603            InputMethodManager imm = InputMethodManager.peekInstance();
1604            if (imm != null && imm.isActive(this)) {
1605                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1606            }
1607        }
1608
1609        super.setEnabled(enabled);
1610
1611        if (enabled) {
1612            // Make sure IME is updated with current editor info.
1613            InputMethodManager imm = InputMethodManager.peekInstance();
1614            if (imm != null) imm.restartInput(this);
1615        }
1616
1617        // Will change text color
1618        if (mEditor != null) {
1619            mEditor.invalidateTextDisplayList();
1620            mEditor.prepareCursorControllers();
1621
1622            // start or stop the cursor blinking as appropriate
1623            mEditor.makeBlink();
1624        }
1625    }
1626
1627    /**
1628     * Sets the typeface and style in which the text should be displayed,
1629     * and turns on the fake bold and italic bits in the Paint if the
1630     * Typeface that you provided does not have all the bits in the
1631     * style that you specified.
1632     *
1633     * @attr ref android.R.styleable#TextView_typeface
1634     * @attr ref android.R.styleable#TextView_textStyle
1635     */
1636    public void setTypeface(Typeface tf, int style) {
1637        if (style > 0) {
1638            if (tf == null) {
1639                tf = Typeface.defaultFromStyle(style);
1640            } else {
1641                tf = Typeface.create(tf, style);
1642            }
1643
1644            setTypeface(tf);
1645            // now compute what (if any) algorithmic styling is needed
1646            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1647            int need = style & ~typefaceStyle;
1648            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1649            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1650        } else {
1651            mTextPaint.setFakeBoldText(false);
1652            mTextPaint.setTextSkewX(0);
1653            setTypeface(tf);
1654        }
1655    }
1656
1657    /**
1658     * Subclasses override this to specify that they have a KeyListener
1659     * by default even if not specifically called for in the XML options.
1660     */
1661    protected boolean getDefaultEditable() {
1662        return false;
1663    }
1664
1665    /**
1666     * Subclasses override this to specify a default movement method.
1667     */
1668    protected MovementMethod getDefaultMovementMethod() {
1669        return null;
1670    }
1671
1672    /**
1673     * Return the text the TextView is displaying. If setText() was called with
1674     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1675     * the return value from this method to Spannable or Editable, respectively.
1676     *
1677     * Note: The content of the return value should not be modified. If you want
1678     * a modifiable one, you should make your own copy first.
1679     *
1680     * @attr ref android.R.styleable#TextView_text
1681     */
1682    @ViewDebug.CapturedViewProperty
1683    public CharSequence getText() {
1684        return mText;
1685    }
1686
1687    /**
1688     * Returns the length, in characters, of the text managed by this TextView
1689     */
1690    public int length() {
1691        return mText.length();
1692    }
1693
1694    /**
1695     * Return the text the TextView is displaying as an Editable object.  If
1696     * the text is not editable, null is returned.
1697     *
1698     * @see #getText
1699     */
1700    public Editable getEditableText() {
1701        return (mText instanceof Editable) ? (Editable)mText : null;
1702    }
1703
1704    /**
1705     * @return the height of one standard line in pixels.  Note that markup
1706     * within the text can cause individual lines to be taller or shorter
1707     * than this height, and the layout may contain additional first-
1708     * or last-line padding.
1709     */
1710    public int getLineHeight() {
1711        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1712    }
1713
1714    /**
1715     * @return the Layout that is currently being used to display the text.
1716     * This can be null if the text or width has recently changes.
1717     */
1718    public final Layout getLayout() {
1719        return mLayout;
1720    }
1721
1722    /**
1723     * @return the Layout that is currently being used to display the hint text.
1724     * This can be null.
1725     */
1726    final Layout getHintLayout() {
1727        return mHintLayout;
1728    }
1729
1730    /**
1731     * Retrieve the {@link android.content.UndoManager} that is currently associated
1732     * with this TextView.  By default there is no associated UndoManager, so null
1733     * is returned.  One can be associated with the TextView through
1734     * {@link #setUndoManager(android.content.UndoManager, String)}
1735     *
1736     * @hide
1737     */
1738    public final UndoManager getUndoManager() {
1739        // TODO: Consider supporting a global undo manager.
1740        throw new UnsupportedOperationException("not implemented");
1741    }
1742
1743
1744    /**
1745     * @hide
1746     */
1747    @VisibleForTesting
1748    public final Editor getEditorForTesting() {
1749        return mEditor;
1750    }
1751
1752    /**
1753     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1754     * done, all edit operations on the TextView will result in appropriate
1755     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1756     * stack.
1757     *
1758     * @param undoManager The {@link android.content.UndoManager} to associate with
1759     * this TextView, or null to clear any existing association.
1760     * @param tag String tag identifying this particular TextView owner in the
1761     * UndoManager.  This is used to keep the correct association with the
1762     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1763     *
1764     * @hide
1765     */
1766    public final void setUndoManager(UndoManager undoManager, String tag) {
1767        // TODO: Consider supporting a global undo manager. An implementation will need to:
1768        // * createEditorIfNeeded()
1769        // * Promote to BufferType.EDITABLE if needed.
1770        // * Update the UndoManager and UndoOwner.
1771        // Likewise it will need to be able to restore the default UndoManager.
1772        throw new UnsupportedOperationException("not implemented");
1773    }
1774
1775    /**
1776     * @return the current key listener for this TextView.
1777     * This will frequently be null for non-EditText TextViews.
1778     *
1779     * @attr ref android.R.styleable#TextView_numeric
1780     * @attr ref android.R.styleable#TextView_digits
1781     * @attr ref android.R.styleable#TextView_phoneNumber
1782     * @attr ref android.R.styleable#TextView_inputMethod
1783     * @attr ref android.R.styleable#TextView_capitalize
1784     * @attr ref android.R.styleable#TextView_autoText
1785     */
1786    public final KeyListener getKeyListener() {
1787        return mEditor == null ? null : mEditor.mKeyListener;
1788    }
1789
1790    /**
1791     * Sets the key listener to be used with this TextView.  This can be null
1792     * to disallow user input.  Note that this method has significant and
1793     * subtle interactions with soft keyboards and other input method:
1794     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1795     * for important details.  Calling this method will replace the current
1796     * content type of the text view with the content type returned by the
1797     * key listener.
1798     * <p>
1799     * Be warned that if you want a TextView with a key listener or movement
1800     * method not to be focusable, or if you want a TextView without a
1801     * key listener or movement method to be focusable, you must call
1802     * {@link #setFocusable} again after calling this to get the focusability
1803     * back the way you want it.
1804     *
1805     * @attr ref android.R.styleable#TextView_numeric
1806     * @attr ref android.R.styleable#TextView_digits
1807     * @attr ref android.R.styleable#TextView_phoneNumber
1808     * @attr ref android.R.styleable#TextView_inputMethod
1809     * @attr ref android.R.styleable#TextView_capitalize
1810     * @attr ref android.R.styleable#TextView_autoText
1811     */
1812    public void setKeyListener(KeyListener input) {
1813        setKeyListenerOnly(input);
1814        fixFocusableAndClickableSettings();
1815
1816        if (input != null) {
1817            createEditorIfNeeded();
1818            try {
1819                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1820            } catch (IncompatibleClassChangeError e) {
1821                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1822            }
1823            // Change inputType, without affecting transformation.
1824            // No need to applySingleLine since mSingleLine is unchanged.
1825            setInputTypeSingleLine(mSingleLine);
1826        } else {
1827            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1828        }
1829
1830        InputMethodManager imm = InputMethodManager.peekInstance();
1831        if (imm != null) imm.restartInput(this);
1832    }
1833
1834    private void setKeyListenerOnly(KeyListener input) {
1835        if (mEditor == null && input == null) return; // null is the default value
1836
1837        createEditorIfNeeded();
1838        if (mEditor.mKeyListener != input) {
1839            mEditor.mKeyListener = input;
1840            if (input != null && !(mText instanceof Editable)) {
1841                setText(mText);
1842            }
1843
1844            setFilters((Editable) mText, mFilters);
1845        }
1846    }
1847
1848    /**
1849     * @return the movement method being used for this TextView.
1850     * This will frequently be null for non-EditText TextViews.
1851     */
1852    public final MovementMethod getMovementMethod() {
1853        return mMovement;
1854    }
1855
1856    /**
1857     * Sets the movement method (arrow key handler) to be used for
1858     * this TextView.  This can be null to disallow using the arrow keys
1859     * to move the cursor or scroll the view.
1860     * <p>
1861     * Be warned that if you want a TextView with a key listener or movement
1862     * method not to be focusable, or if you want a TextView without a
1863     * key listener or movement method to be focusable, you must call
1864     * {@link #setFocusable} again after calling this to get the focusability
1865     * back the way you want it.
1866     */
1867    public final void setMovementMethod(MovementMethod movement) {
1868        if (mMovement != movement) {
1869            mMovement = movement;
1870
1871            if (movement != null && !(mText instanceof Spannable)) {
1872                setText(mText);
1873            }
1874
1875            fixFocusableAndClickableSettings();
1876
1877            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1878            // mMovement
1879            if (mEditor != null) mEditor.prepareCursorControllers();
1880        }
1881    }
1882
1883    private void fixFocusableAndClickableSettings() {
1884        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1885            setFocusable(true);
1886            setClickable(true);
1887            setLongClickable(true);
1888        } else {
1889            setFocusable(false);
1890            setClickable(false);
1891            setLongClickable(false);
1892        }
1893    }
1894
1895    /**
1896     * @return the current transformation method for this TextView.
1897     * This will frequently be null except for single-line and password
1898     * fields.
1899     *
1900     * @attr ref android.R.styleable#TextView_password
1901     * @attr ref android.R.styleable#TextView_singleLine
1902     */
1903    public final TransformationMethod getTransformationMethod() {
1904        return mTransformation;
1905    }
1906
1907    /**
1908     * Sets the transformation that is applied to the text that this
1909     * TextView is displaying.
1910     *
1911     * @attr ref android.R.styleable#TextView_password
1912     * @attr ref android.R.styleable#TextView_singleLine
1913     */
1914    public final void setTransformationMethod(TransformationMethod method) {
1915        if (method == mTransformation) {
1916            // Avoid the setText() below if the transformation is
1917            // the same.
1918            return;
1919        }
1920        if (mTransformation != null) {
1921            if (mText instanceof Spannable) {
1922                ((Spannable) mText).removeSpan(mTransformation);
1923            }
1924        }
1925
1926        mTransformation = method;
1927
1928        if (method instanceof TransformationMethod2) {
1929            TransformationMethod2 method2 = (TransformationMethod2) method;
1930            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1931            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1932        } else {
1933            mAllowTransformationLengthChange = false;
1934        }
1935
1936        setText(mText);
1937
1938        if (hasPasswordTransformationMethod()) {
1939            notifyViewAccessibilityStateChangedIfNeeded(
1940                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1941        }
1942    }
1943
1944    /**
1945     * Returns the top padding of the view, plus space for the top
1946     * Drawable if any.
1947     */
1948    public int getCompoundPaddingTop() {
1949        final Drawables dr = mDrawables;
1950        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1951            return mPaddingTop;
1952        } else {
1953            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1954        }
1955    }
1956
1957    /**
1958     * Returns the bottom padding of the view, plus space for the bottom
1959     * Drawable if any.
1960     */
1961    public int getCompoundPaddingBottom() {
1962        final Drawables dr = mDrawables;
1963        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1964            return mPaddingBottom;
1965        } else {
1966            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1967        }
1968    }
1969
1970    /**
1971     * Returns the left padding of the view, plus space for the left
1972     * Drawable if any.
1973     */
1974    public int getCompoundPaddingLeft() {
1975        final Drawables dr = mDrawables;
1976        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1977            return mPaddingLeft;
1978        } else {
1979            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1980        }
1981    }
1982
1983    /**
1984     * Returns the right padding of the view, plus space for the right
1985     * Drawable if any.
1986     */
1987    public int getCompoundPaddingRight() {
1988        final Drawables dr = mDrawables;
1989        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1990            return mPaddingRight;
1991        } else {
1992            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1993        }
1994    }
1995
1996    /**
1997     * Returns the start padding of the view, plus space for the start
1998     * Drawable if any.
1999     */
2000    public int getCompoundPaddingStart() {
2001        resolveDrawables();
2002        switch(getLayoutDirection()) {
2003            default:
2004            case LAYOUT_DIRECTION_LTR:
2005                return getCompoundPaddingLeft();
2006            case LAYOUT_DIRECTION_RTL:
2007                return getCompoundPaddingRight();
2008        }
2009    }
2010
2011    /**
2012     * Returns the end padding of the view, plus space for the end
2013     * Drawable if any.
2014     */
2015    public int getCompoundPaddingEnd() {
2016        resolveDrawables();
2017        switch(getLayoutDirection()) {
2018            default:
2019            case LAYOUT_DIRECTION_LTR:
2020                return getCompoundPaddingRight();
2021            case LAYOUT_DIRECTION_RTL:
2022                return getCompoundPaddingLeft();
2023        }
2024    }
2025
2026    /**
2027     * Returns the extended top padding of the view, including both the
2028     * top Drawable if any and any extra space to keep more than maxLines
2029     * of text from showing.  It is only valid to call this after measuring.
2030     */
2031    public int getExtendedPaddingTop() {
2032        if (mMaxMode != LINES) {
2033            return getCompoundPaddingTop();
2034        }
2035
2036        if (mLayout == null) {
2037            assumeLayout();
2038        }
2039
2040        if (mLayout.getLineCount() <= mMaximum) {
2041            return getCompoundPaddingTop();
2042        }
2043
2044        int top = getCompoundPaddingTop();
2045        int bottom = getCompoundPaddingBottom();
2046        int viewht = getHeight() - top - bottom;
2047        int layoutht = mLayout.getLineTop(mMaximum);
2048
2049        if (layoutht >= viewht) {
2050            return top;
2051        }
2052
2053        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2054        if (gravity == Gravity.TOP) {
2055            return top;
2056        } else if (gravity == Gravity.BOTTOM) {
2057            return top + viewht - layoutht;
2058        } else { // (gravity == Gravity.CENTER_VERTICAL)
2059            return top + (viewht - layoutht) / 2;
2060        }
2061    }
2062
2063    /**
2064     * Returns the extended bottom padding of the view, including both the
2065     * bottom Drawable if any and any extra space to keep more than maxLines
2066     * of text from showing.  It is only valid to call this after measuring.
2067     */
2068    public int getExtendedPaddingBottom() {
2069        if (mMaxMode != LINES) {
2070            return getCompoundPaddingBottom();
2071        }
2072
2073        if (mLayout == null) {
2074            assumeLayout();
2075        }
2076
2077        if (mLayout.getLineCount() <= mMaximum) {
2078            return getCompoundPaddingBottom();
2079        }
2080
2081        int top = getCompoundPaddingTop();
2082        int bottom = getCompoundPaddingBottom();
2083        int viewht = getHeight() - top - bottom;
2084        int layoutht = mLayout.getLineTop(mMaximum);
2085
2086        if (layoutht >= viewht) {
2087            return bottom;
2088        }
2089
2090        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2091        if (gravity == Gravity.TOP) {
2092            return bottom + viewht - layoutht;
2093        } else if (gravity == Gravity.BOTTOM) {
2094            return bottom;
2095        } else { // (gravity == Gravity.CENTER_VERTICAL)
2096            return bottom + (viewht - layoutht) / 2;
2097        }
2098    }
2099
2100    /**
2101     * Returns the total left padding of the view, including the left
2102     * Drawable if any.
2103     */
2104    public int getTotalPaddingLeft() {
2105        return getCompoundPaddingLeft();
2106    }
2107
2108    /**
2109     * Returns the total right padding of the view, including the right
2110     * Drawable if any.
2111     */
2112    public int getTotalPaddingRight() {
2113        return getCompoundPaddingRight();
2114    }
2115
2116    /**
2117     * Returns the total start padding of the view, including the start
2118     * Drawable if any.
2119     */
2120    public int getTotalPaddingStart() {
2121        return getCompoundPaddingStart();
2122    }
2123
2124    /**
2125     * Returns the total end padding of the view, including the end
2126     * Drawable if any.
2127     */
2128    public int getTotalPaddingEnd() {
2129        return getCompoundPaddingEnd();
2130    }
2131
2132    /**
2133     * Returns the total top padding of the view, including the top
2134     * Drawable if any, the extra space to keep more than maxLines
2135     * from showing, and the vertical offset for gravity, if any.
2136     */
2137    public int getTotalPaddingTop() {
2138        return getExtendedPaddingTop() + getVerticalOffset(true);
2139    }
2140
2141    /**
2142     * Returns the total bottom padding of the view, including the bottom
2143     * Drawable if any, the extra space to keep more than maxLines
2144     * from showing, and the vertical offset for gravity, if any.
2145     */
2146    public int getTotalPaddingBottom() {
2147        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
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 must already have had
2154     * {@link Drawable#setBounds} called.
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 setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2165            @Nullable Drawable right, @Nullable Drawable bottom) {
2166        Drawables dr = mDrawables;
2167
2168        // We're switching to absolute, discard relative.
2169        if (dr != null) {
2170            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2171            dr.mDrawableStart = null;
2172            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2173            dr.mDrawableEnd = null;
2174            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2175            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2176        }
2177
2178        final boolean drawables = left != null || top != null || right != null || bottom != null;
2179        if (!drawables) {
2180            // Clearing drawables...  can we free the data structure?
2181            if (dr != null) {
2182                if (!dr.hasMetadata()) {
2183                    mDrawables = null;
2184                } else {
2185                    // We need to retain the last set padding, so just clear
2186                    // out all of the fields in the existing structure.
2187                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2188                        if (dr.mShowing[i] != null) {
2189                            dr.mShowing[i].setCallback(null);
2190                        }
2191                        dr.mShowing[i] = null;
2192                    }
2193                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2194                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2195                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2196                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2197                }
2198            }
2199        } else {
2200            if (dr == null) {
2201                mDrawables = dr = new Drawables(getContext());
2202            }
2203
2204            mDrawables.mOverride = false;
2205
2206            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2207                dr.mShowing[Drawables.LEFT].setCallback(null);
2208            }
2209            dr.mShowing[Drawables.LEFT] = left;
2210
2211            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2212                dr.mShowing[Drawables.TOP].setCallback(null);
2213            }
2214            dr.mShowing[Drawables.TOP] = top;
2215
2216            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2217                dr.mShowing[Drawables.RIGHT].setCallback(null);
2218            }
2219            dr.mShowing[Drawables.RIGHT] = right;
2220
2221            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2222                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2223            }
2224            dr.mShowing[Drawables.BOTTOM] = bottom;
2225
2226            final Rect compoundRect = dr.mCompoundRect;
2227            int[] state;
2228
2229            state = getDrawableState();
2230
2231            if (left != null) {
2232                left.setState(state);
2233                left.copyBounds(compoundRect);
2234                left.setCallback(this);
2235                dr.mDrawableSizeLeft = compoundRect.width();
2236                dr.mDrawableHeightLeft = compoundRect.height();
2237            } else {
2238                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2239            }
2240
2241            if (right != null) {
2242                right.setState(state);
2243                right.copyBounds(compoundRect);
2244                right.setCallback(this);
2245                dr.mDrawableSizeRight = compoundRect.width();
2246                dr.mDrawableHeightRight = compoundRect.height();
2247            } else {
2248                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2249            }
2250
2251            if (top != null) {
2252                top.setState(state);
2253                top.copyBounds(compoundRect);
2254                top.setCallback(this);
2255                dr.mDrawableSizeTop = compoundRect.height();
2256                dr.mDrawableWidthTop = compoundRect.width();
2257            } else {
2258                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2259            }
2260
2261            if (bottom != null) {
2262                bottom.setState(state);
2263                bottom.copyBounds(compoundRect);
2264                bottom.setCallback(this);
2265                dr.mDrawableSizeBottom = compoundRect.height();
2266                dr.mDrawableWidthBottom = compoundRect.width();
2267            } else {
2268                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2269            }
2270        }
2271
2272        // Save initial left/right drawables
2273        if (dr != null) {
2274            dr.mDrawableLeftInitial = left;
2275            dr.mDrawableRightInitial = right;
2276        }
2277
2278        resetResolvedDrawables();
2279        resolveDrawables();
2280        applyCompoundDrawableTint();
2281        invalidate();
2282        requestLayout();
2283    }
2284
2285    /**
2286     * Sets the Drawables (if any) to appear to the left of, above, to the
2287     * right of, and below the text. Use 0 if you do not want a Drawable there.
2288     * The Drawables' bounds will be set to their intrinsic bounds.
2289     * <p>
2290     * Calling this method will overwrite any Drawables previously set using
2291     * {@link #setCompoundDrawablesRelative} or related methods.
2292     *
2293     * @param left Resource identifier of the left Drawable.
2294     * @param top Resource identifier of the top Drawable.
2295     * @param right Resource identifier of the right Drawable.
2296     * @param bottom Resource identifier of the bottom Drawable.
2297     *
2298     * @attr ref android.R.styleable#TextView_drawableLeft
2299     * @attr ref android.R.styleable#TextView_drawableTop
2300     * @attr ref android.R.styleable#TextView_drawableRight
2301     * @attr ref android.R.styleable#TextView_drawableBottom
2302     */
2303    @android.view.RemotableViewMethod
2304    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2305            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2306        final Context context = getContext();
2307        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2308                top != 0 ? context.getDrawable(top) : null,
2309                right != 0 ? context.getDrawable(right) : null,
2310                bottom != 0 ? context.getDrawable(bottom) : null);
2311    }
2312
2313    /**
2314     * Sets the Drawables (if any) to appear to the left of, above, to the
2315     * right of, and below the text. Use {@code null} if you do not want a
2316     * Drawable there. The Drawables' bounds will be set to their intrinsic
2317     * bounds.
2318     * <p>
2319     * Calling this method will overwrite any Drawables previously set using
2320     * {@link #setCompoundDrawablesRelative} or related methods.
2321     *
2322     * @attr ref android.R.styleable#TextView_drawableLeft
2323     * @attr ref android.R.styleable#TextView_drawableTop
2324     * @attr ref android.R.styleable#TextView_drawableRight
2325     * @attr ref android.R.styleable#TextView_drawableBottom
2326     */
2327    @android.view.RemotableViewMethod
2328    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2329            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2330
2331        if (left != null) {
2332            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2333        }
2334        if (right != null) {
2335            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2336        }
2337        if (top != null) {
2338            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2339        }
2340        if (bottom != null) {
2341            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2342        }
2343        setCompoundDrawables(left, top, right, bottom);
2344    }
2345
2346    /**
2347     * Sets the Drawables (if any) to appear to the start of, above, to the end
2348     * of, and below the text. Use {@code null} if you do not want a Drawable
2349     * there. The Drawables must already have had {@link Drawable#setBounds}
2350     * called.
2351     * <p>
2352     * Calling this method will overwrite any Drawables previously set using
2353     * {@link #setCompoundDrawables} or related methods.
2354     *
2355     * @attr ref android.R.styleable#TextView_drawableStart
2356     * @attr ref android.R.styleable#TextView_drawableTop
2357     * @attr ref android.R.styleable#TextView_drawableEnd
2358     * @attr ref android.R.styleable#TextView_drawableBottom
2359     */
2360    @android.view.RemotableViewMethod
2361    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2362            @Nullable Drawable end, @Nullable Drawable bottom) {
2363        Drawables dr = mDrawables;
2364
2365        // We're switching to relative, discard absolute.
2366        if (dr != null) {
2367            if (dr.mShowing[Drawables.LEFT] != null) {
2368                dr.mShowing[Drawables.LEFT].setCallback(null);
2369            }
2370            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2371            if (dr.mShowing[Drawables.RIGHT] != null) {
2372                dr.mShowing[Drawables.RIGHT].setCallback(null);
2373            }
2374            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2375            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2376            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2377        }
2378
2379        final boolean drawables = start != null || top != null
2380                || end != null || bottom != null;
2381
2382        if (!drawables) {
2383            // Clearing drawables...  can we free the data structure?
2384            if (dr != null) {
2385                if (!dr.hasMetadata()) {
2386                    mDrawables = null;
2387                } else {
2388                    // We need to retain the last set padding, so just clear
2389                    // out all of the fields in the existing structure.
2390                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2391                    dr.mDrawableStart = null;
2392                    if (dr.mShowing[Drawables.TOP] != null) {
2393                        dr.mShowing[Drawables.TOP].setCallback(null);
2394                    }
2395                    dr.mShowing[Drawables.TOP] = null;
2396                    if (dr.mDrawableEnd != null) {
2397                        dr.mDrawableEnd.setCallback(null);
2398                    }
2399                    dr.mDrawableEnd = null;
2400                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2401                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2402                    }
2403                    dr.mShowing[Drawables.BOTTOM] = null;
2404                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2405                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2406                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2407                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2408                }
2409            }
2410        } else {
2411            if (dr == null) {
2412                mDrawables = dr = new Drawables(getContext());
2413            }
2414
2415            mDrawables.mOverride = true;
2416
2417            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2418                dr.mDrawableStart.setCallback(null);
2419            }
2420            dr.mDrawableStart = start;
2421
2422            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2423                dr.mShowing[Drawables.TOP].setCallback(null);
2424            }
2425            dr.mShowing[Drawables.TOP] = top;
2426
2427            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2428                dr.mDrawableEnd.setCallback(null);
2429            }
2430            dr.mDrawableEnd = end;
2431
2432            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2433                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2434            }
2435            dr.mShowing[Drawables.BOTTOM] = bottom;
2436
2437            final Rect compoundRect = dr.mCompoundRect;
2438            int[] state;
2439
2440            state = getDrawableState();
2441
2442            if (start != null) {
2443                start.setState(state);
2444                start.copyBounds(compoundRect);
2445                start.setCallback(this);
2446                dr.mDrawableSizeStart = compoundRect.width();
2447                dr.mDrawableHeightStart = compoundRect.height();
2448            } else {
2449                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2450            }
2451
2452            if (end != null) {
2453                end.setState(state);
2454                end.copyBounds(compoundRect);
2455                end.setCallback(this);
2456                dr.mDrawableSizeEnd = compoundRect.width();
2457                dr.mDrawableHeightEnd = compoundRect.height();
2458            } else {
2459                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2460            }
2461
2462            if (top != null) {
2463                top.setState(state);
2464                top.copyBounds(compoundRect);
2465                top.setCallback(this);
2466                dr.mDrawableSizeTop = compoundRect.height();
2467                dr.mDrawableWidthTop = compoundRect.width();
2468            } else {
2469                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2470            }
2471
2472            if (bottom != null) {
2473                bottom.setState(state);
2474                bottom.copyBounds(compoundRect);
2475                bottom.setCallback(this);
2476                dr.mDrawableSizeBottom = compoundRect.height();
2477                dr.mDrawableWidthBottom = compoundRect.width();
2478            } else {
2479                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2480            }
2481        }
2482
2483        resetResolvedDrawables();
2484        resolveDrawables();
2485        invalidate();
2486        requestLayout();
2487    }
2488
2489    /**
2490     * Sets the Drawables (if any) to appear to the start of, above, to the end
2491     * of, and below the text. Use 0 if you do not want a Drawable there. The
2492     * Drawables' bounds will be set to their intrinsic bounds.
2493     * <p>
2494     * Calling this method will overwrite any Drawables previously set using
2495     * {@link #setCompoundDrawables} or related methods.
2496     *
2497     * @param start Resource identifier of the start Drawable.
2498     * @param top Resource identifier of the top Drawable.
2499     * @param end Resource identifier of the end Drawable.
2500     * @param bottom Resource identifier of the bottom Drawable.
2501     *
2502     * @attr ref android.R.styleable#TextView_drawableStart
2503     * @attr ref android.R.styleable#TextView_drawableTop
2504     * @attr ref android.R.styleable#TextView_drawableEnd
2505     * @attr ref android.R.styleable#TextView_drawableBottom
2506     */
2507    @android.view.RemotableViewMethod
2508    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2509            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2510        final Context context = getContext();
2511        setCompoundDrawablesRelativeWithIntrinsicBounds(
2512                start != 0 ? context.getDrawable(start) : null,
2513                top != 0 ? context.getDrawable(top) : null,
2514                end != 0 ? context.getDrawable(end) : null,
2515                bottom != 0 ? context.getDrawable(bottom) : null);
2516    }
2517
2518    /**
2519     * Sets the Drawables (if any) to appear to the start of, above, to the end
2520     * of, and below the text. Use {@code null} if you do not want a Drawable
2521     * there. The Drawables' bounds will be set to their intrinsic bounds.
2522     * <p>
2523     * Calling this method will overwrite any Drawables previously set using
2524     * {@link #setCompoundDrawables} or related methods.
2525     *
2526     * @attr ref android.R.styleable#TextView_drawableStart
2527     * @attr ref android.R.styleable#TextView_drawableTop
2528     * @attr ref android.R.styleable#TextView_drawableEnd
2529     * @attr ref android.R.styleable#TextView_drawableBottom
2530     */
2531    @android.view.RemotableViewMethod
2532    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2533            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2534
2535        if (start != null) {
2536            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2537        }
2538        if (end != null) {
2539            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2540        }
2541        if (top != null) {
2542            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2543        }
2544        if (bottom != null) {
2545            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2546        }
2547        setCompoundDrawablesRelative(start, top, end, bottom);
2548    }
2549
2550    /**
2551     * Returns drawables for the left, top, right, and bottom borders.
2552     *
2553     * @attr ref android.R.styleable#TextView_drawableLeft
2554     * @attr ref android.R.styleable#TextView_drawableTop
2555     * @attr ref android.R.styleable#TextView_drawableRight
2556     * @attr ref android.R.styleable#TextView_drawableBottom
2557     */
2558    @NonNull
2559    public Drawable[] getCompoundDrawables() {
2560        final Drawables dr = mDrawables;
2561        if (dr != null) {
2562            return dr.mShowing.clone();
2563        } else {
2564            return new Drawable[] { null, null, null, null };
2565        }
2566    }
2567
2568    /**
2569     * Returns drawables for the start, top, end, and bottom borders.
2570     *
2571     * @attr ref android.R.styleable#TextView_drawableStart
2572     * @attr ref android.R.styleable#TextView_drawableTop
2573     * @attr ref android.R.styleable#TextView_drawableEnd
2574     * @attr ref android.R.styleable#TextView_drawableBottom
2575     */
2576    @NonNull
2577    public Drawable[] getCompoundDrawablesRelative() {
2578        final Drawables dr = mDrawables;
2579        if (dr != null) {
2580            return new Drawable[] {
2581                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2582                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2583            };
2584        } else {
2585            return new Drawable[] { null, null, null, null };
2586        }
2587    }
2588
2589    /**
2590     * Sets the size of the padding between the compound drawables and
2591     * the text.
2592     *
2593     * @attr ref android.R.styleable#TextView_drawablePadding
2594     */
2595    @android.view.RemotableViewMethod
2596    public void setCompoundDrawablePadding(int pad) {
2597        Drawables dr = mDrawables;
2598        if (pad == 0) {
2599            if (dr != null) {
2600                dr.mDrawablePadding = pad;
2601            }
2602        } else {
2603            if (dr == null) {
2604                mDrawables = dr = new Drawables(getContext());
2605            }
2606            dr.mDrawablePadding = pad;
2607        }
2608
2609        invalidate();
2610        requestLayout();
2611    }
2612
2613    /**
2614     * Returns the padding between the compound drawables and the text.
2615     *
2616     * @attr ref android.R.styleable#TextView_drawablePadding
2617     */
2618    public int getCompoundDrawablePadding() {
2619        final Drawables dr = mDrawables;
2620        return dr != null ? dr.mDrawablePadding : 0;
2621    }
2622
2623    /**
2624     * Applies a tint to the compound drawables. Does not modify the
2625     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2626     * <p>
2627     * Subsequent calls to
2628     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2629     * and related methods will automatically mutate the drawables and apply
2630     * the specified tint and tint mode using
2631     * {@link Drawable#setTintList(ColorStateList)}.
2632     *
2633     * @param tint the tint to apply, may be {@code null} to clear tint
2634     *
2635     * @attr ref android.R.styleable#TextView_drawableTint
2636     * @see #getCompoundDrawableTintList()
2637     * @see Drawable#setTintList(ColorStateList)
2638     */
2639    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2640        if (mDrawables == null) {
2641            mDrawables = new Drawables(getContext());
2642        }
2643        mDrawables.mTintList = tint;
2644        mDrawables.mHasTint = true;
2645
2646        applyCompoundDrawableTint();
2647    }
2648
2649    /**
2650     * @return the tint applied to the compound drawables
2651     * @attr ref android.R.styleable#TextView_drawableTint
2652     * @see #setCompoundDrawableTintList(ColorStateList)
2653     */
2654    public ColorStateList getCompoundDrawableTintList() {
2655        return mDrawables != null ? mDrawables.mTintList : null;
2656    }
2657
2658    /**
2659     * Specifies the blending mode used to apply the tint specified by
2660     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2661     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2662     *
2663     * @param tintMode the blending mode used to apply the tint, may be
2664     *                 {@code null} to clear tint
2665     * @attr ref android.R.styleable#TextView_drawableTintMode
2666     * @see #setCompoundDrawableTintList(ColorStateList)
2667     * @see Drawable#setTintMode(PorterDuff.Mode)
2668     */
2669    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2670        if (mDrawables == null) {
2671            mDrawables = new Drawables(getContext());
2672        }
2673        mDrawables.mTintMode = tintMode;
2674        mDrawables.mHasTintMode = true;
2675
2676        applyCompoundDrawableTint();
2677    }
2678
2679    /**
2680     * Returns the blending mode used to apply the tint to the compound
2681     * drawables, if specified.
2682     *
2683     * @return the blending mode used to apply the tint to the compound
2684     *         drawables
2685     * @attr ref android.R.styleable#TextView_drawableTintMode
2686     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2687     */
2688    public PorterDuff.Mode getCompoundDrawableTintMode() {
2689        return mDrawables != null ? mDrawables.mTintMode : null;
2690    }
2691
2692    private void applyCompoundDrawableTint() {
2693        if (mDrawables == null) {
2694            return;
2695        }
2696
2697        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2698            final ColorStateList tintList = mDrawables.mTintList;
2699            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2700            final boolean hasTint = mDrawables.mHasTint;
2701            final boolean hasTintMode = mDrawables.mHasTintMode;
2702            final int[] state = getDrawableState();
2703
2704            for (Drawable dr : mDrawables.mShowing) {
2705                if (dr == null) {
2706                    continue;
2707                }
2708
2709                if (dr == mDrawables.mDrawableError) {
2710                    // From a developer's perspective, the error drawable isn't
2711                    // a compound drawable. Don't apply the generic compound
2712                    // drawable tint to it.
2713                    continue;
2714                }
2715
2716                dr.mutate();
2717
2718                if (hasTint) {
2719                    dr.setTintList(tintList);
2720                }
2721
2722                if (hasTintMode) {
2723                    dr.setTintMode(tintMode);
2724                }
2725
2726                // The drawable (or one of its children) may not have been
2727                // stateful before applying the tint, so let's try again.
2728                if (dr.isStateful()) {
2729                    dr.setState(state);
2730                }
2731            }
2732        }
2733    }
2734
2735    @Override
2736    public void setPadding(int left, int top, int right, int bottom) {
2737        if (left != mPaddingLeft ||
2738            right != mPaddingRight ||
2739            top != mPaddingTop ||
2740            bottom != mPaddingBottom) {
2741            nullLayouts();
2742        }
2743
2744        // the super call will requestLayout()
2745        super.setPadding(left, top, right, bottom);
2746        invalidate();
2747    }
2748
2749    @Override
2750    public void setPaddingRelative(int start, int top, int end, int bottom) {
2751        if (start != getPaddingStart() ||
2752            end != getPaddingEnd() ||
2753            top != mPaddingTop ||
2754            bottom != mPaddingBottom) {
2755            nullLayouts();
2756        }
2757
2758        // the super call will requestLayout()
2759        super.setPaddingRelative(start, top, end, bottom);
2760        invalidate();
2761    }
2762
2763    /**
2764     * Gets the autolink mask of the text.  See {@link
2765     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2766     * possible values.
2767     *
2768     * @attr ref android.R.styleable#TextView_autoLink
2769     */
2770    public final int getAutoLinkMask() {
2771        return mAutoLinkMask;
2772    }
2773
2774    /**
2775     * Sets the text appearance from the specified style resource.
2776     * <p>
2777     * Use a framework-defined {@code TextAppearance} style like
2778     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2779     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2780     * set of attributes that can be used in a custom style.
2781     *
2782     * @param resId the resource identifier of the style to apply
2783     * @attr ref android.R.styleable#TextView_textAppearance
2784     */
2785    @SuppressWarnings("deprecation")
2786    public void setTextAppearance(@StyleRes int resId) {
2787        setTextAppearance(mContext, resId);
2788    }
2789
2790    /**
2791     * Sets the text color, size, style, hint color, and highlight color
2792     * from the specified TextAppearance resource.
2793     *
2794     * @deprecated Use {@link #setTextAppearance(int)} instead.
2795     */
2796    @Deprecated
2797    public void setTextAppearance(Context context, @StyleRes int resId) {
2798        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2799
2800        final int textColorHighlight = ta.getColor(
2801                R.styleable.TextAppearance_textColorHighlight, 0);
2802        if (textColorHighlight != 0) {
2803            setHighlightColor(textColorHighlight);
2804        }
2805
2806        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2807        if (textColor != null) {
2808            setTextColor(textColor);
2809        }
2810
2811        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2812        if (textSize != 0) {
2813            setRawTextSize(textSize);
2814        }
2815
2816        final ColorStateList textColorHint = ta.getColorStateList(
2817                R.styleable.TextAppearance_textColorHint);
2818        if (textColorHint != null) {
2819            setHintTextColor(textColorHint);
2820        }
2821
2822        final ColorStateList textColorLink = ta.getColorStateList(
2823                R.styleable.TextAppearance_textColorLink);
2824        if (textColorLink != null) {
2825            setLinkTextColor(textColorLink);
2826        }
2827
2828        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2829        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2830        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2831        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2832
2833        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2834        if (shadowColor != 0) {
2835            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2836            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2837            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2838            setShadowLayer(r, dx, dy, shadowColor);
2839        }
2840
2841        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2842            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2843        }
2844
2845        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2846            setElegantTextHeight(ta.getBoolean(
2847                R.styleable.TextAppearance_elegantTextHeight, false));
2848        }
2849
2850        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2851            setLetterSpacing(ta.getFloat(
2852                R.styleable.TextAppearance_letterSpacing, 0));
2853        }
2854
2855        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2856            setFontFeatureSettings(ta.getString(
2857                R.styleable.TextAppearance_fontFeatureSettings));
2858        }
2859
2860        ta.recycle();
2861    }
2862
2863    /**
2864     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2865     * the first member of {@link #getTextLocales()}.
2866     * @return the default primary {@link Locale} of the text in this TextView.
2867     */
2868    @NonNull
2869    public Locale getTextLocale() {
2870        return mTextPaint.getTextLocale();
2871    }
2872
2873    /**
2874     * Get the default {@link LocaleList} of the text in this TextView.
2875     * @return the default {@link LocaleList} of the text in this TextView.
2876     */
2877    @NonNull @Size(min=1)
2878    public LocaleList getTextLocales() {
2879        return mTextPaint.getTextLocales();
2880    }
2881
2882    /**
2883     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2884     * containing just the given value.
2885     *
2886     * @param locale the {@link Locale} for drawing text, must not be null.
2887     *
2888     * @see #setTextLocales
2889     */
2890    public void setTextLocale(@NonNull Locale locale) {
2891        mLocalesChanged = true;
2892        mTextPaint.setTextLocale(locale);
2893    }
2894
2895    /**
2896     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2897     *
2898     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2899     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2900     * other aspects of text display, including line breaking.
2901     *
2902     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2903     *
2904     * @see Paint#setTextLocales
2905     */
2906    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2907        mLocalesChanged = true;
2908        mTextPaint.setTextLocales(locales);
2909    }
2910
2911    @Override
2912    protected void onConfigurationChanged(Configuration newConfig) {
2913        super.onConfigurationChanged(newConfig);
2914        if (!mLocalesChanged) {
2915            mTextPaint.setTextLocales(LocaleList.getDefault());
2916        }
2917    }
2918
2919    /**
2920     * @return the size (in pixels) of the default text size in this TextView.
2921     */
2922    @ViewDebug.ExportedProperty(category = "text")
2923    public float getTextSize() {
2924        return mTextPaint.getTextSize();
2925    }
2926
2927    /**
2928     * @return the size (in scaled pixels) of thee default text size in this TextView.
2929     * @hide
2930     */
2931    @ViewDebug.ExportedProperty(category = "text")
2932    public float getScaledTextSize() {
2933        return mTextPaint.getTextSize() / mTextPaint.density;
2934    }
2935
2936    /** @hide */
2937    @ViewDebug.ExportedProperty(category = "text", mapping = {
2938            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2939            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2940            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2941            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2942    })
2943    public int getTypefaceStyle() {
2944        Typeface typeface = mTextPaint.getTypeface();
2945        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2946    }
2947
2948    /**
2949     * Set the default text size to the given value, interpreted as "scaled
2950     * pixel" units.  This size is adjusted based on the current density and
2951     * user font size preference.
2952     *
2953     * @param size The scaled pixel size.
2954     *
2955     * @attr ref android.R.styleable#TextView_textSize
2956     */
2957    @android.view.RemotableViewMethod
2958    public void setTextSize(float size) {
2959        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2960    }
2961
2962    /**
2963     * Set the default text size to a given unit and value.  See {@link
2964     * TypedValue} for the possible dimension units.
2965     *
2966     * @param unit The desired dimension unit.
2967     * @param size The desired size in the given units.
2968     *
2969     * @attr ref android.R.styleable#TextView_textSize
2970     */
2971    public void setTextSize(int unit, float size) {
2972        Context c = getContext();
2973        Resources r;
2974
2975        if (c == null)
2976            r = Resources.getSystem();
2977        else
2978            r = c.getResources();
2979
2980        setRawTextSize(TypedValue.applyDimension(
2981                unit, size, r.getDisplayMetrics()));
2982    }
2983
2984    private void setRawTextSize(float size) {
2985        if (size != mTextPaint.getTextSize()) {
2986            mTextPaint.setTextSize(size);
2987
2988            if (mLayout != null) {
2989                nullLayouts();
2990                requestLayout();
2991                invalidate();
2992            }
2993        }
2994    }
2995
2996    /**
2997     * @return the extent by which text is currently being stretched
2998     * horizontally.  This will usually be 1.
2999     */
3000    public float getTextScaleX() {
3001        return mTextPaint.getTextScaleX();
3002    }
3003
3004    /**
3005     * Sets the extent by which text should be stretched horizontally.
3006     *
3007     * @attr ref android.R.styleable#TextView_textScaleX
3008     */
3009    @android.view.RemotableViewMethod
3010    public void setTextScaleX(float size) {
3011        if (size != mTextPaint.getTextScaleX()) {
3012            mUserSetTextScaleX = true;
3013            mTextPaint.setTextScaleX(size);
3014
3015            if (mLayout != null) {
3016                nullLayouts();
3017                requestLayout();
3018                invalidate();
3019            }
3020        }
3021    }
3022
3023    /**
3024     * Sets the typeface and style in which the text should be displayed.
3025     * Note that not all Typeface families actually have bold and italic
3026     * variants, so you may need to use
3027     * {@link #setTypeface(Typeface, int)} to get the appearance
3028     * that you actually want.
3029     *
3030     * @see #getTypeface()
3031     *
3032     * @attr ref android.R.styleable#TextView_fontFamily
3033     * @attr ref android.R.styleable#TextView_typeface
3034     * @attr ref android.R.styleable#TextView_textStyle
3035     */
3036    public void setTypeface(Typeface tf) {
3037        if (mTextPaint.getTypeface() != tf) {
3038            mTextPaint.setTypeface(tf);
3039
3040            if (mLayout != null) {
3041                nullLayouts();
3042                requestLayout();
3043                invalidate();
3044            }
3045        }
3046    }
3047
3048    /**
3049     * @return the current typeface and style in which the text is being
3050     * displayed.
3051     *
3052     * @see #setTypeface(Typeface)
3053     *
3054     * @attr ref android.R.styleable#TextView_fontFamily
3055     * @attr ref android.R.styleable#TextView_typeface
3056     * @attr ref android.R.styleable#TextView_textStyle
3057     */
3058    public Typeface getTypeface() {
3059        return mTextPaint.getTypeface();
3060    }
3061
3062    /**
3063     * Set the TextView's elegant height metrics flag. This setting selects font
3064     * variants that have not been compacted to fit Latin-based vertical
3065     * metrics, and also increases top and bottom bounds to provide more space.
3066     *
3067     * @param elegant set the paint's elegant metrics flag.
3068     *
3069     * @attr ref android.R.styleable#TextView_elegantTextHeight
3070     */
3071    public void setElegantTextHeight(boolean elegant) {
3072        mTextPaint.setElegantTextHeight(elegant);
3073    }
3074
3075    /**
3076     * @return the extent by which text is currently being letter-spaced.
3077     * This will normally be 0.
3078     *
3079     * @see #setLetterSpacing(float)
3080     * @see Paint#setLetterSpacing
3081     */
3082    public float getLetterSpacing() {
3083        return mTextPaint.getLetterSpacing();
3084    }
3085
3086    /**
3087     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3088     * for slight expansion will be around 0.05.  Negative values tighten text.
3089     *
3090     * @see #getLetterSpacing()
3091     * @see Paint#getLetterSpacing
3092     *
3093     * @attr ref android.R.styleable#TextView_letterSpacing
3094     */
3095    @android.view.RemotableViewMethod
3096    public void setLetterSpacing(float letterSpacing) {
3097        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3098            mTextPaint.setLetterSpacing(letterSpacing);
3099
3100            if (mLayout != null) {
3101                nullLayouts();
3102                requestLayout();
3103                invalidate();
3104            }
3105        }
3106    }
3107
3108    /**
3109     * @return the currently set font feature settings.  Default is null.
3110     *
3111     * @see #setFontFeatureSettings(String)
3112     * @see Paint#setFontFeatureSettings
3113     */
3114    @Nullable
3115    public String getFontFeatureSettings() {
3116        return mTextPaint.getFontFeatureSettings();
3117    }
3118
3119    /**
3120     * Sets the break strategy for breaking paragraphs into lines. The default value for
3121     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3122     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3123     * text "dancing" when being edited.
3124     *
3125     * @attr ref android.R.styleable#TextView_breakStrategy
3126     * @see #getBreakStrategy()
3127     */
3128    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3129        mBreakStrategy = breakStrategy;
3130        if (mLayout != null) {
3131            nullLayouts();
3132            requestLayout();
3133            invalidate();
3134        }
3135    }
3136
3137    /**
3138     * @return the currently set break strategy.
3139     *
3140     * @attr ref android.R.styleable#TextView_breakStrategy
3141     * @see #setBreakStrategy(int)
3142     */
3143    @Layout.BreakStrategy
3144    public int getBreakStrategy() {
3145        return mBreakStrategy;
3146    }
3147
3148    /**
3149     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3150     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3151     *
3152     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3153     * @see #getHyphenationFrequency()
3154     */
3155    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3156        mHyphenationFrequency = hyphenationFrequency;
3157        if (mLayout != null) {
3158            nullLayouts();
3159            requestLayout();
3160            invalidate();
3161        }
3162    }
3163
3164    /**
3165     * @return the currently set hyphenation frequency.
3166     *
3167     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3168     * @see #setHyphenationFrequency(int)
3169     */
3170    @Layout.HyphenationFrequency
3171    public int getHyphenationFrequency() {
3172        return mHyphenationFrequency;
3173    }
3174
3175    /**
3176     * Sets font feature settings.  The format is the same as the CSS
3177     * font-feature-settings attribute:
3178     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3179     *
3180     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3181     * @see #getFontFeatureSettings()
3182     * @see Paint#getFontFeatureSettings
3183     *
3184     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3185     */
3186    @android.view.RemotableViewMethod
3187    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3188        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3189            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3190
3191            if (mLayout != null) {
3192                nullLayouts();
3193                requestLayout();
3194                invalidate();
3195            }
3196        }
3197    }
3198
3199
3200    /**
3201     * Sets the text color for all the states (normal, selected,
3202     * focused) to be this color.
3203     *
3204     * @see #setTextColor(ColorStateList)
3205     * @see #getTextColors()
3206     *
3207     * @attr ref android.R.styleable#TextView_textColor
3208     */
3209    @android.view.RemotableViewMethod
3210    public void setTextColor(@ColorInt int color) {
3211        mTextColor = ColorStateList.valueOf(color);
3212        updateTextColors();
3213    }
3214
3215    /**
3216     * Sets the text color.
3217     *
3218     * @see #setTextColor(int)
3219     * @see #getTextColors()
3220     * @see #setHintTextColor(ColorStateList)
3221     * @see #setLinkTextColor(ColorStateList)
3222     *
3223     * @attr ref android.R.styleable#TextView_textColor
3224     */
3225    public void setTextColor(ColorStateList colors) {
3226        if (colors == null) {
3227            throw new NullPointerException();
3228        }
3229
3230        mTextColor = colors;
3231        updateTextColors();
3232    }
3233
3234    /**
3235     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3236     *
3237     * @see #setTextColor(ColorStateList)
3238     * @see #setTextColor(int)
3239     *
3240     * @attr ref android.R.styleable#TextView_textColor
3241     */
3242    public final ColorStateList getTextColors() {
3243        return mTextColor;
3244    }
3245
3246    /**
3247     * <p>Return the current color selected for normal text.</p>
3248     *
3249     * @return Returns the current text color.
3250     */
3251    @ColorInt
3252    public final int getCurrentTextColor() {
3253        return mCurTextColor;
3254    }
3255
3256    /**
3257     * Sets the color used to display the selection highlight.
3258     *
3259     * @attr ref android.R.styleable#TextView_textColorHighlight
3260     */
3261    @android.view.RemotableViewMethod
3262    public void setHighlightColor(@ColorInt int color) {
3263        if (mHighlightColor != color) {
3264            mHighlightColor = color;
3265            invalidate();
3266        }
3267    }
3268
3269    /**
3270     * @return the color used to display the selection highlight
3271     *
3272     * @see #setHighlightColor(int)
3273     *
3274     * @attr ref android.R.styleable#TextView_textColorHighlight
3275     */
3276    @ColorInt
3277    public int getHighlightColor() {
3278        return mHighlightColor;
3279    }
3280
3281    /**
3282     * Sets whether the soft input method will be made visible when this
3283     * TextView gets focused. The default is true.
3284     */
3285    @android.view.RemotableViewMethod
3286    public final void setShowSoftInputOnFocus(boolean show) {
3287        createEditorIfNeeded();
3288        mEditor.mShowSoftInputOnFocus = show;
3289    }
3290
3291    /**
3292     * Returns whether the soft input method will be made visible when this
3293     * TextView gets focused. The default is true.
3294     */
3295    public final boolean getShowSoftInputOnFocus() {
3296        // When there is no Editor, return default true value
3297        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3298    }
3299
3300    /**
3301     * Gives the text a shadow of the specified blur radius and color, the specified
3302     * distance from its drawn position.
3303     * <p>
3304     * The text shadow produced does not interact with the properties on view
3305     * that are responsible for real time shadows,
3306     * {@link View#getElevation() elevation} and
3307     * {@link View#getTranslationZ() translationZ}.
3308     *
3309     * @see Paint#setShadowLayer(float, float, float, int)
3310     *
3311     * @attr ref android.R.styleable#TextView_shadowColor
3312     * @attr ref android.R.styleable#TextView_shadowDx
3313     * @attr ref android.R.styleable#TextView_shadowDy
3314     * @attr ref android.R.styleable#TextView_shadowRadius
3315     */
3316    public void setShadowLayer(float radius, float dx, float dy, int color) {
3317        mTextPaint.setShadowLayer(radius, dx, dy, color);
3318
3319        mShadowRadius = radius;
3320        mShadowDx = dx;
3321        mShadowDy = dy;
3322        mShadowColor = color;
3323
3324        // Will change text clip region
3325        if (mEditor != null) mEditor.invalidateTextDisplayList();
3326        invalidate();
3327    }
3328
3329    /**
3330     * Gets the radius of the shadow layer.
3331     *
3332     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3333     *
3334     * @see #setShadowLayer(float, float, float, int)
3335     *
3336     * @attr ref android.R.styleable#TextView_shadowRadius
3337     */
3338    public float getShadowRadius() {
3339        return mShadowRadius;
3340    }
3341
3342    /**
3343     * @return the horizontal offset of the shadow layer
3344     *
3345     * @see #setShadowLayer(float, float, float, int)
3346     *
3347     * @attr ref android.R.styleable#TextView_shadowDx
3348     */
3349    public float getShadowDx() {
3350        return mShadowDx;
3351    }
3352
3353    /**
3354     * @return the vertical offset of the shadow layer
3355     *
3356     * @see #setShadowLayer(float, float, float, int)
3357     *
3358     * @attr ref android.R.styleable#TextView_shadowDy
3359     */
3360    public float getShadowDy() {
3361        return mShadowDy;
3362    }
3363
3364    /**
3365     * @return the color of the shadow layer
3366     *
3367     * @see #setShadowLayer(float, float, float, int)
3368     *
3369     * @attr ref android.R.styleable#TextView_shadowColor
3370     */
3371    @ColorInt
3372    public int getShadowColor() {
3373        return mShadowColor;
3374    }
3375
3376    /**
3377     * @return the base paint used for the text.  Please use this only to
3378     * consult the Paint's properties and not to change them.
3379     */
3380    public TextPaint getPaint() {
3381        return mTextPaint;
3382    }
3383
3384    /**
3385     * Sets the autolink mask of the text.  See {@link
3386     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3387     * possible values.
3388     *
3389     * @attr ref android.R.styleable#TextView_autoLink
3390     */
3391    @android.view.RemotableViewMethod
3392    public final void setAutoLinkMask(int mask) {
3393        mAutoLinkMask = mask;
3394    }
3395
3396    /**
3397     * Sets whether the movement method will automatically be set to {@link LinkMovementMethod}
3398     * after {@link #setText} or {@link #append} is called. The movement method is set if one of the
3399     * following is true:
3400     * <ul>
3401     * <li>{@link #setAutoLinkMask} has been set to nonzero and links are detected in
3402     * {@link #setText} or {@link #append}.
3403     * <li>The input for {@link #setText} or {@link #append} contains a {@link ClickableSpan}.
3404     * </ul>
3405     *
3406     * <p>This function does not have an immediate effect, movement method will be set only after a
3407     * call to {@link #setText} or {@link #append}. The default is true.</p>
3408     *
3409     * @attr ref android.R.styleable#TextView_linksClickable
3410     */
3411    @android.view.RemotableViewMethod
3412    public final void setLinksClickable(boolean whether) {
3413        mLinksClickable = whether;
3414    }
3415
3416    /**
3417     * Returns whether the movement method will automatically be set to {@link LinkMovementMethod}
3418     * after {@link #setText} or {@link #append} is called.
3419     *
3420     * See {@link #setLinksClickable} for details.
3421     *
3422     * <p>The default is true.</p>
3423     *
3424     * @see #setLinksClickable
3425     *
3426     * @attr ref android.R.styleable#TextView_linksClickable
3427     */
3428    public final boolean getLinksClickable() {
3429        return mLinksClickable;
3430    }
3431
3432    /**
3433     * Returns the list of URLSpans attached to the text
3434     * (by {@link Linkify} or otherwise) if any.  You can call
3435     * {@link URLSpan#getURL} on them to find where they link to
3436     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3437     * to find the region of the text they are attached to.
3438     */
3439    public URLSpan[] getUrls() {
3440        if (mText instanceof Spanned) {
3441            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3442        } else {
3443            return new URLSpan[0];
3444        }
3445    }
3446
3447    /**
3448     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3449     * TextView.
3450     *
3451     * @see #setHintTextColor(ColorStateList)
3452     * @see #getHintTextColors()
3453     * @see #setTextColor(int)
3454     *
3455     * @attr ref android.R.styleable#TextView_textColorHint
3456     */
3457    @android.view.RemotableViewMethod
3458    public final void setHintTextColor(@ColorInt int color) {
3459        mHintTextColor = ColorStateList.valueOf(color);
3460        updateTextColors();
3461    }
3462
3463    /**
3464     * Sets the color of the hint text.
3465     *
3466     * @see #getHintTextColors()
3467     * @see #setHintTextColor(int)
3468     * @see #setTextColor(ColorStateList)
3469     * @see #setLinkTextColor(ColorStateList)
3470     *
3471     * @attr ref android.R.styleable#TextView_textColorHint
3472     */
3473    public final void setHintTextColor(ColorStateList colors) {
3474        mHintTextColor = colors;
3475        updateTextColors();
3476    }
3477
3478    /**
3479     * @return the color of the hint text, for the different states of this TextView.
3480     *
3481     * @see #setHintTextColor(ColorStateList)
3482     * @see #setHintTextColor(int)
3483     * @see #setTextColor(ColorStateList)
3484     * @see #setLinkTextColor(ColorStateList)
3485     *
3486     * @attr ref android.R.styleable#TextView_textColorHint
3487     */
3488    public final ColorStateList getHintTextColors() {
3489        return mHintTextColor;
3490    }
3491
3492    /**
3493     * <p>Return the current color selected to paint the hint text.</p>
3494     *
3495     * @return Returns the current hint text color.
3496     */
3497    @ColorInt
3498    public final int getCurrentHintTextColor() {
3499        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3500    }
3501
3502    /**
3503     * Sets the color of links in the text.
3504     *
3505     * @see #setLinkTextColor(ColorStateList)
3506     * @see #getLinkTextColors()
3507     *
3508     * @attr ref android.R.styleable#TextView_textColorLink
3509     */
3510    @android.view.RemotableViewMethod
3511    public final void setLinkTextColor(@ColorInt int color) {
3512        mLinkTextColor = ColorStateList.valueOf(color);
3513        updateTextColors();
3514    }
3515
3516    /**
3517     * Sets the color of links in the text.
3518     *
3519     * @see #setLinkTextColor(int)
3520     * @see #getLinkTextColors()
3521     * @see #setTextColor(ColorStateList)
3522     * @see #setHintTextColor(ColorStateList)
3523     *
3524     * @attr ref android.R.styleable#TextView_textColorLink
3525     */
3526    public final void setLinkTextColor(ColorStateList colors) {
3527        mLinkTextColor = colors;
3528        updateTextColors();
3529    }
3530
3531    /**
3532     * @return the list of colors used to paint the links in the text, for the different states of
3533     * this TextView
3534     *
3535     * @see #setLinkTextColor(ColorStateList)
3536     * @see #setLinkTextColor(int)
3537     *
3538     * @attr ref android.R.styleable#TextView_textColorLink
3539     */
3540    public final ColorStateList getLinkTextColors() {
3541        return mLinkTextColor;
3542    }
3543
3544    /**
3545     * Sets the horizontal alignment of the text and the
3546     * vertical gravity that will be used when there is extra space
3547     * in the TextView beyond what is required for the text itself.
3548     *
3549     * @see android.view.Gravity
3550     * @attr ref android.R.styleable#TextView_gravity
3551     */
3552    public void setGravity(int gravity) {
3553        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3554            gravity |= Gravity.START;
3555        }
3556        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3557            gravity |= Gravity.TOP;
3558        }
3559
3560        boolean newLayout = false;
3561
3562        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3563            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3564            newLayout = true;
3565        }
3566
3567        if (gravity != mGravity) {
3568            invalidate();
3569        }
3570
3571        mGravity = gravity;
3572
3573        if (mLayout != null && newLayout) {
3574            // XXX this is heavy-handed because no actual content changes.
3575            int want = mLayout.getWidth();
3576            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3577
3578            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3579                          mRight - mLeft - getCompoundPaddingLeft() -
3580                          getCompoundPaddingRight(), true);
3581        }
3582    }
3583
3584    /**
3585     * Returns the horizontal and vertical alignment of this TextView.
3586     *
3587     * @see android.view.Gravity
3588     * @attr ref android.R.styleable#TextView_gravity
3589     */
3590    public int getGravity() {
3591        return mGravity;
3592    }
3593
3594    /**
3595     * @return the flags on the Paint being used to display the text.
3596     * @see Paint#getFlags
3597     */
3598    public int getPaintFlags() {
3599        return mTextPaint.getFlags();
3600    }
3601
3602    /**
3603     * Sets flags on the Paint being used to display the text and
3604     * reflows the text if they are different from the old flags.
3605     * @see Paint#setFlags
3606     */
3607    @android.view.RemotableViewMethod
3608    public void setPaintFlags(int flags) {
3609        if (mTextPaint.getFlags() != flags) {
3610            mTextPaint.setFlags(flags);
3611
3612            if (mLayout != null) {
3613                nullLayouts();
3614                requestLayout();
3615                invalidate();
3616            }
3617        }
3618    }
3619
3620    /**
3621     * Sets whether the text should be allowed to be wider than the
3622     * View is.  If false, it will be wrapped to the width of the View.
3623     *
3624     * @attr ref android.R.styleable#TextView_scrollHorizontally
3625     */
3626    public void setHorizontallyScrolling(boolean whether) {
3627        if (mHorizontallyScrolling != whether) {
3628            mHorizontallyScrolling = whether;
3629
3630            if (mLayout != null) {
3631                nullLayouts();
3632                requestLayout();
3633                invalidate();
3634            }
3635        }
3636    }
3637
3638    /**
3639     * Returns whether the text is allowed to be wider than the View is.
3640     * If false, the text will be wrapped to the width of the View.
3641     *
3642     * @attr ref android.R.styleable#TextView_scrollHorizontally
3643     * @hide
3644     */
3645    public boolean getHorizontallyScrolling() {
3646        return mHorizontallyScrolling;
3647    }
3648
3649    /**
3650     * Makes the TextView at least this many lines tall.
3651     *
3652     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3653     * set this value to 1.
3654     *
3655     * @see #getMinLines()
3656     *
3657     * @attr ref android.R.styleable#TextView_minLines
3658     */
3659    @android.view.RemotableViewMethod
3660    public void setMinLines(int minlines) {
3661        mMinimum = minlines;
3662        mMinMode = LINES;
3663
3664        requestLayout();
3665        invalidate();
3666    }
3667
3668    /**
3669     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3670     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3671     *
3672     * @see #setMinLines(int)
3673     *
3674     * @attr ref android.R.styleable#TextView_minLines
3675     */
3676    public int getMinLines() {
3677        return mMinMode == LINES ? mMinimum : -1;
3678    }
3679
3680    /**
3681     * Makes the TextView at least this many pixels tall.
3682     *
3683     * Setting this value overrides any other (minimum) number of lines setting.
3684     *
3685     * @attr ref android.R.styleable#TextView_minHeight
3686     */
3687    @android.view.RemotableViewMethod
3688    public void setMinHeight(int minHeight) {
3689        mMinimum = minHeight;
3690        mMinMode = PIXELS;
3691
3692        requestLayout();
3693        invalidate();
3694    }
3695
3696    /**
3697     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3698     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3699     *
3700     * @see #setMinHeight(int)
3701     *
3702     * @attr ref android.R.styleable#TextView_minHeight
3703     */
3704    public int getMinHeight() {
3705        return mMinMode == PIXELS ? mMinimum : -1;
3706    }
3707
3708    /**
3709     * Makes the TextView at most this many lines tall.
3710     *
3711     * Setting this value overrides any other (maximum) height setting.
3712     *
3713     * @attr ref android.R.styleable#TextView_maxLines
3714     */
3715    @android.view.RemotableViewMethod
3716    public void setMaxLines(int maxlines) {
3717        mMaximum = maxlines;
3718        mMaxMode = LINES;
3719
3720        requestLayout();
3721        invalidate();
3722    }
3723
3724    /**
3725     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3726     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3727     *
3728     * @see #setMaxLines(int)
3729     *
3730     * @attr ref android.R.styleable#TextView_maxLines
3731     */
3732    public int getMaxLines() {
3733        return mMaxMode == LINES ? mMaximum : -1;
3734    }
3735
3736    /**
3737     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3738     * {@link #setMaxLines(int)} method.
3739     *
3740     * Setting this value overrides any other (maximum) number of lines setting.
3741     *
3742     * @attr ref android.R.styleable#TextView_maxHeight
3743     */
3744    @android.view.RemotableViewMethod
3745    public void setMaxHeight(int maxHeight) {
3746        mMaximum = maxHeight;
3747        mMaxMode = PIXELS;
3748
3749        requestLayout();
3750        invalidate();
3751    }
3752
3753    /**
3754     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3755     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3756     *
3757     * @see #setMaxHeight(int)
3758     *
3759     * @attr ref android.R.styleable#TextView_maxHeight
3760     */
3761    public int getMaxHeight() {
3762        return mMaxMode == PIXELS ? mMaximum : -1;
3763    }
3764
3765    /**
3766     * Makes the TextView exactly this many lines tall.
3767     *
3768     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3769     * height setting. A single line TextView will set this value to 1.
3770     *
3771     * @attr ref android.R.styleable#TextView_lines
3772     */
3773    @android.view.RemotableViewMethod
3774    public void setLines(int lines) {
3775        mMaximum = mMinimum = lines;
3776        mMaxMode = mMinMode = LINES;
3777
3778        requestLayout();
3779        invalidate();
3780    }
3781
3782    /**
3783     * Makes the TextView exactly this many pixels tall.
3784     * You could do the same thing by specifying this number in the
3785     * LayoutParams.
3786     *
3787     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3788     * height setting.
3789     *
3790     * @attr ref android.R.styleable#TextView_height
3791     */
3792    @android.view.RemotableViewMethod
3793    public void setHeight(int pixels) {
3794        mMaximum = mMinimum = pixels;
3795        mMaxMode = mMinMode = PIXELS;
3796
3797        requestLayout();
3798        invalidate();
3799    }
3800
3801    /**
3802     * Makes the TextView at least this many ems wide
3803     *
3804     * @attr ref android.R.styleable#TextView_minEms
3805     */
3806    @android.view.RemotableViewMethod
3807    public void setMinEms(int minems) {
3808        mMinWidth = minems;
3809        mMinWidthMode = EMS;
3810
3811        requestLayout();
3812        invalidate();
3813    }
3814
3815    /**
3816     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3817     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3818     *
3819     * @see #setMinEms(int)
3820     * @see #setEms(int)
3821     *
3822     * @attr ref android.R.styleable#TextView_minEms
3823     */
3824    public int getMinEms() {
3825        return mMinWidthMode == EMS ? mMinWidth : -1;
3826    }
3827
3828    /**
3829     * Makes the TextView at least this many pixels wide
3830     *
3831     * @attr ref android.R.styleable#TextView_minWidth
3832     */
3833    @android.view.RemotableViewMethod
3834    public void setMinWidth(int minpixels) {
3835        mMinWidth = minpixels;
3836        mMinWidthMode = PIXELS;
3837
3838        requestLayout();
3839        invalidate();
3840    }
3841
3842    /**
3843     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3844     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3845     *
3846     * @see #setMinWidth(int)
3847     * @see #setWidth(int)
3848     *
3849     * @attr ref android.R.styleable#TextView_minWidth
3850     */
3851    public int getMinWidth() {
3852        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3853    }
3854
3855    /**
3856     * Makes the TextView at most this many ems wide
3857     *
3858     * @attr ref android.R.styleable#TextView_maxEms
3859     */
3860    @android.view.RemotableViewMethod
3861    public void setMaxEms(int maxems) {
3862        mMaxWidth = maxems;
3863        mMaxWidthMode = EMS;
3864
3865        requestLayout();
3866        invalidate();
3867    }
3868
3869    /**
3870     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3871     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3872     *
3873     * @see #setMaxEms(int)
3874     * @see #setEms(int)
3875     *
3876     * @attr ref android.R.styleable#TextView_maxEms
3877     */
3878    public int getMaxEms() {
3879        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3880    }
3881
3882    /**
3883     * Makes the TextView at most this many pixels wide
3884     *
3885     * @attr ref android.R.styleable#TextView_maxWidth
3886     */
3887    @android.view.RemotableViewMethod
3888    public void setMaxWidth(int maxpixels) {
3889        mMaxWidth = maxpixels;
3890        mMaxWidthMode = PIXELS;
3891
3892        requestLayout();
3893        invalidate();
3894    }
3895
3896    /**
3897     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3898     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3899     *
3900     * @see #setMaxWidth(int)
3901     * @see #setWidth(int)
3902     *
3903     * @attr ref android.R.styleable#TextView_maxWidth
3904     */
3905    public int getMaxWidth() {
3906        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3907    }
3908
3909    /**
3910     * Makes the TextView exactly this many ems wide
3911     *
3912     * @see #setMaxEms(int)
3913     * @see #setMinEms(int)
3914     * @see #getMinEms()
3915     * @see #getMaxEms()
3916     *
3917     * @attr ref android.R.styleable#TextView_ems
3918     */
3919    @android.view.RemotableViewMethod
3920    public void setEms(int ems) {
3921        mMaxWidth = mMinWidth = ems;
3922        mMaxWidthMode = mMinWidthMode = EMS;
3923
3924        requestLayout();
3925        invalidate();
3926    }
3927
3928    /**
3929     * Makes the TextView exactly this many pixels wide.
3930     * You could do the same thing by specifying this number in the
3931     * LayoutParams.
3932     *
3933     * @see #setMaxWidth(int)
3934     * @see #setMinWidth(int)
3935     * @see #getMinWidth()
3936     * @see #getMaxWidth()
3937     *
3938     * @attr ref android.R.styleable#TextView_width
3939     */
3940    @android.view.RemotableViewMethod
3941    public void setWidth(int pixels) {
3942        mMaxWidth = mMinWidth = pixels;
3943        mMaxWidthMode = mMinWidthMode = PIXELS;
3944
3945        requestLayout();
3946        invalidate();
3947    }
3948
3949    /**
3950     * Sets line spacing for this TextView.  Each line will have its height
3951     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3952     *
3953     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3954     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3955     */
3956    public void setLineSpacing(float add, float mult) {
3957        if (mSpacingAdd != add || mSpacingMult != mult) {
3958            mSpacingAdd = add;
3959            mSpacingMult = mult;
3960
3961            if (mLayout != null) {
3962                nullLayouts();
3963                requestLayout();
3964                invalidate();
3965            }
3966        }
3967    }
3968
3969    /**
3970     * Gets the line spacing multiplier
3971     *
3972     * @return the value by which each line's height is multiplied to get its actual height.
3973     *
3974     * @see #setLineSpacing(float, float)
3975     * @see #getLineSpacingExtra()
3976     *
3977     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3978     */
3979    public float getLineSpacingMultiplier() {
3980        return mSpacingMult;
3981    }
3982
3983    /**
3984     * Gets the line spacing extra space
3985     *
3986     * @return the extra space that is added to the height of each lines of this TextView.
3987     *
3988     * @see #setLineSpacing(float, float)
3989     * @see #getLineSpacingMultiplier()
3990     *
3991     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3992     */
3993    public float getLineSpacingExtra() {
3994        return mSpacingAdd;
3995    }
3996
3997    /**
3998     * Convenience method: Append the specified text to the TextView's
3999     * display buffer, upgrading it to BufferType.EDITABLE if it was
4000     * not already editable.
4001     */
4002    public final void append(CharSequence text) {
4003        append(text, 0, text.length());
4004    }
4005
4006    /**
4007     * Convenience method: Append the specified text slice to the TextView's
4008     * display buffer, upgrading it to BufferType.EDITABLE if it was
4009     * not already editable.
4010     */
4011    public void append(CharSequence text, int start, int end) {
4012        if (!(mText instanceof Editable)) {
4013            setText(mText, BufferType.EDITABLE);
4014        }
4015
4016        ((Editable) mText).append(text, start, end);
4017
4018        boolean hasClickableSpans = false;
4019        if (mAutoLinkMask != 0) {
4020            hasClickableSpans = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4021        } else if (mLinksClickable && text instanceof Spanned) {
4022            ClickableSpan[] clickableSpans =
4023                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4024            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4025        }
4026
4027        // Do not change the movement method for text that supports text selection as it
4028        // would prevent an arbitrary cursor displacement.
4029        if (hasClickableSpans && mLinksClickable && !textCanBeSelected()) {
4030            setMovementMethod(LinkMovementMethod.getInstance());
4031        }
4032    }
4033
4034    private void updateTextColors() {
4035        boolean inval = false;
4036        int color = mTextColor.getColorForState(getDrawableState(), 0);
4037        if (color != mCurTextColor) {
4038            mCurTextColor = color;
4039            inval = true;
4040        }
4041        if (mLinkTextColor != null) {
4042            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4043            if (color != mTextPaint.linkColor) {
4044                mTextPaint.linkColor = color;
4045                inval = true;
4046            }
4047        }
4048        if (mHintTextColor != null) {
4049            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4050            if (color != mCurHintTextColor) {
4051                mCurHintTextColor = color;
4052                if (mText.length() == 0) {
4053                    inval = true;
4054                }
4055            }
4056        }
4057        if (inval) {
4058            // Text needs to be redrawn with the new color
4059            if (mEditor != null) mEditor.invalidateTextDisplayList();
4060            invalidate();
4061        }
4062    }
4063
4064    @Override
4065    protected void drawableStateChanged() {
4066        super.drawableStateChanged();
4067
4068        if (mTextColor != null && mTextColor.isStateful()
4069                || (mHintTextColor != null && mHintTextColor.isStateful())
4070                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4071            updateTextColors();
4072        }
4073
4074        if (mDrawables != null) {
4075            final int[] state = getDrawableState();
4076            for (Drawable dr : mDrawables.mShowing) {
4077                if (dr != null && dr.isStateful() && dr.setState(state)) {
4078                    invalidateDrawable(dr);
4079                }
4080            }
4081        }
4082    }
4083
4084    @Override
4085    public void drawableHotspotChanged(float x, float y) {
4086        super.drawableHotspotChanged(x, y);
4087
4088        if (mDrawables != null) {
4089            for (Drawable dr : mDrawables.mShowing) {
4090                if (dr != null) {
4091                    dr.setHotspot(x, y);
4092                }
4093            }
4094        }
4095    }
4096
4097    @Override
4098    public Parcelable onSaveInstanceState() {
4099        Parcelable superState = super.onSaveInstanceState();
4100
4101        // Save state if we are forced to
4102        final boolean freezesText = getFreezesText();
4103        boolean hasSelection = false;
4104        int start = -1;
4105        int end = -1;
4106
4107        if (mText != null) {
4108            start = getSelectionStart();
4109            end = getSelectionEnd();
4110            if (start >= 0 || end >= 0) {
4111                // Or save state if there is a selection
4112                hasSelection = true;
4113            }
4114        }
4115
4116        if (freezesText || hasSelection) {
4117            SavedState ss = new SavedState(superState);
4118
4119            if (freezesText) {
4120                if (mText instanceof Spanned) {
4121                    final Spannable sp = new SpannableStringBuilder(mText);
4122
4123                    if (mEditor != null) {
4124                        removeMisspelledSpans(sp);
4125                        sp.removeSpan(mEditor.mSuggestionRangeSpan);
4126                    }
4127
4128                    ss.text = sp;
4129                } else {
4130                    ss.text = mText.toString();
4131                }
4132            }
4133
4134            if (hasSelection) {
4135                // XXX Should also save the current scroll position!
4136                ss.selStart = start;
4137                ss.selEnd = end;
4138            }
4139
4140            if (isFocused() && start >= 0 && end >= 0) {
4141                ss.frozenWithFocus = true;
4142            }
4143
4144            ss.error = getError();
4145
4146            if (mEditor != null) {
4147                ss.editorState = mEditor.saveInstanceState();
4148            }
4149            return ss;
4150        }
4151
4152        return superState;
4153    }
4154
4155    void removeMisspelledSpans(Spannable spannable) {
4156        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4157                SuggestionSpan.class);
4158        for (int i = 0; i < suggestionSpans.length; i++) {
4159            int flags = suggestionSpans[i].getFlags();
4160            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4161                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4162                spannable.removeSpan(suggestionSpans[i]);
4163            }
4164        }
4165    }
4166
4167    @Override
4168    public void onRestoreInstanceState(Parcelable state) {
4169        if (!(state instanceof SavedState)) {
4170            super.onRestoreInstanceState(state);
4171            return;
4172        }
4173
4174        SavedState ss = (SavedState)state;
4175        super.onRestoreInstanceState(ss.getSuperState());
4176
4177        // XXX restore buffer type too, as well as lots of other stuff
4178        if (ss.text != null) {
4179            setText(ss.text);
4180        }
4181
4182        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4183            if (mText instanceof Spannable) {
4184                int len = mText.length();
4185
4186                if (ss.selStart > len || ss.selEnd > len) {
4187                    String restored = "";
4188
4189                    if (ss.text != null) {
4190                        restored = "(restored) ";
4191                    }
4192
4193                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4194                          "/" + ss.selEnd + " out of range for " + restored +
4195                          "text " + mText);
4196                } else {
4197                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4198
4199                    if (ss.frozenWithFocus) {
4200                        createEditorIfNeeded();
4201                        mEditor.mFrozenWithFocus = true;
4202                    }
4203                }
4204            }
4205        }
4206
4207        if (ss.error != null) {
4208            final CharSequence error = ss.error;
4209            // Display the error later, after the first layout pass
4210            post(new Runnable() {
4211                public void run() {
4212                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4213                        setError(error);
4214                    }
4215                }
4216            });
4217        }
4218
4219        if (ss.editorState != null) {
4220            createEditorIfNeeded();
4221            mEditor.restoreInstanceState(ss.editorState);
4222        }
4223    }
4224
4225    /**
4226     * Control whether this text view saves its entire text contents when
4227     * freezing to an icicle, in addition to dynamic state such as cursor
4228     * position.  By default this is false, not saving the text.  Set to true
4229     * if the text in the text view is not being saved somewhere else in
4230     * persistent storage (such as in a content provider) so that if the
4231     * view is later thawed the user will not lose their data. For
4232     * {@link android.widget.EditText} it is always enabled, regardless of
4233     * the value of the attribute.
4234     *
4235     * @param freezesText Controls whether a frozen icicle should include the
4236     * entire text data: true to include it, false to not.
4237     *
4238     * @attr ref android.R.styleable#TextView_freezesText
4239     */
4240    @android.view.RemotableViewMethod
4241    public void setFreezesText(boolean freezesText) {
4242        mFreezesText = freezesText;
4243    }
4244
4245    /**
4246     * Return whether this text view is including its entire text contents
4247     * in frozen icicles. For {@link android.widget.EditText} it always returns true.
4248     *
4249     * @return Returns true if text is included, false if it isn't.
4250     *
4251     * @see #setFreezesText
4252     */
4253    public boolean getFreezesText() {
4254        return mFreezesText;
4255    }
4256
4257    ///////////////////////////////////////////////////////////////////////////
4258
4259    /**
4260     * Sets the Factory used to create new Editables.
4261     */
4262    public final void setEditableFactory(Editable.Factory factory) {
4263        mEditableFactory = factory;
4264        setText(mText);
4265    }
4266
4267    /**
4268     * Sets the Factory used to create new Spannables.
4269     */
4270    public final void setSpannableFactory(Spannable.Factory factory) {
4271        mSpannableFactory = factory;
4272        setText(mText);
4273    }
4274
4275    /**
4276     * Sets the string value of the TextView. TextView <em>does not</em> accept
4277     * HTML-like formatting, which you can do with text strings in XML resource files.
4278     * To style your strings, attach android.text.style.* objects to a
4279     * {@link android.text.SpannableString SpannableString}, or see the
4280     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4281     * Available Resource Types</a> documentation for an example of setting
4282     * formatted text in the XML resource file.
4283     *
4284     * @attr ref android.R.styleable#TextView_text
4285     */
4286    @android.view.RemotableViewMethod
4287    public final void setText(CharSequence text) {
4288        setText(text, mBufferType);
4289    }
4290
4291    /**
4292     * Like {@link #setText(CharSequence)},
4293     * except that the cursor position (if any) is retained in the new text.
4294     *
4295     * @param text The new text to place in the text view.
4296     *
4297     * @see #setText(CharSequence)
4298     */
4299    @android.view.RemotableViewMethod
4300    public final void setTextKeepState(CharSequence text) {
4301        setTextKeepState(text, mBufferType);
4302    }
4303
4304    /**
4305     * Sets the text that this TextView is to display (see
4306     * {@link #setText(CharSequence)}) and also sets whether it is stored
4307     * in a styleable/spannable buffer and whether it is editable.
4308     *
4309     * @attr ref android.R.styleable#TextView_text
4310     * @attr ref android.R.styleable#TextView_bufferType
4311     */
4312    public void setText(CharSequence text, BufferType type) {
4313        setText(text, type, true, 0);
4314
4315        if (mCharWrapper != null) {
4316            mCharWrapper.mChars = null;
4317        }
4318    }
4319
4320    private void setText(CharSequence text, BufferType type,
4321                         boolean notifyBefore, int oldlen) {
4322        if (text == null) {
4323            text = "";
4324        }
4325
4326        // If suggestions are not enabled, remove the suggestion spans from the text
4327        if (!isSuggestionsEnabled()) {
4328            text = removeSuggestionSpans(text);
4329        }
4330
4331        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4332
4333        if (text instanceof Spanned &&
4334            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4335            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4336                setHorizontalFadingEdgeEnabled(true);
4337                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4338            } else {
4339                setHorizontalFadingEdgeEnabled(false);
4340                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4341            }
4342            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4343        }
4344
4345        int n = mFilters.length;
4346        for (int i = 0; i < n; i++) {
4347            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4348            if (out != null) {
4349                text = out;
4350            }
4351        }
4352
4353        if (notifyBefore) {
4354            if (mText != null) {
4355                oldlen = mText.length();
4356                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4357            } else {
4358                sendBeforeTextChanged("", 0, 0, text.length());
4359            }
4360        }
4361
4362        boolean needEditableForNotification = false;
4363
4364        if (mListeners != null && mListeners.size() != 0) {
4365            needEditableForNotification = true;
4366        }
4367
4368        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4369                needEditableForNotification) {
4370            createEditorIfNeeded();
4371            mEditor.forgetUndoRedo();
4372            Editable t = mEditableFactory.newEditable(text);
4373            text = t;
4374            setFilters(t, mFilters);
4375            InputMethodManager imm = InputMethodManager.peekInstance();
4376            if (imm != null) imm.restartInput(this);
4377        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4378            text = mSpannableFactory.newSpannable(text);
4379        } else if (!(text instanceof CharWrapper)) {
4380            text = TextUtils.stringOrSpannedString(text);
4381        }
4382
4383        boolean hasClickableSpans = false;
4384        if (mAutoLinkMask != 0) {
4385            Spannable s2;
4386
4387            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4388                s2 = (Spannable) text;
4389            } else {
4390                s2 = mSpannableFactory.newSpannable(text);
4391            }
4392
4393            hasClickableSpans = Linkify.addLinks(s2, mAutoLinkMask);
4394            if (hasClickableSpans) {
4395                text = s2;
4396            }
4397        } else if (mLinksClickable && text instanceof Spanned) {
4398            ClickableSpan[] clickableSpans =
4399                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4400            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4401            if (hasClickableSpans && !(text instanceof Spannable)) {
4402                text = mSpannableFactory.newSpannable(text);
4403            }
4404        }
4405
4406        if (hasClickableSpans) {
4407            type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4408            /*
4409             * We must go ahead and set the text before changing the
4410             * movement method, because setMovementMethod() may call
4411             * setText() again to try to upgrade the buffer type.
4412             */
4413            mText = text;
4414
4415            // Do not change the movement method for text that supports text selection as it
4416            // would prevent an arbitrary cursor displacement.
4417            if (mLinksClickable && !textCanBeSelected()) {
4418                setMovementMethod(LinkMovementMethod.getInstance());
4419            }
4420        }
4421
4422        mBufferType = type;
4423        mText = text;
4424
4425        if (mTransformation == null) {
4426            mTransformed = text;
4427        } else {
4428            mTransformed = mTransformation.getTransformation(text, this);
4429        }
4430
4431        final int textLength = text.length();
4432
4433        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4434            Spannable sp = (Spannable) text;
4435
4436            // Remove any ChangeWatchers that might have come from other TextViews.
4437            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4438            final int count = watchers.length;
4439            for (int i = 0; i < count; i++) {
4440                sp.removeSpan(watchers[i]);
4441            }
4442
4443            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4444
4445            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4446                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4447
4448            if (mEditor != null) mEditor.addSpanWatchers(sp);
4449
4450            if (mTransformation != null) {
4451                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4452            }
4453
4454            if (mMovement != null) {
4455                mMovement.initialize(this, (Spannable) text);
4456
4457                /*
4458                 * Initializing the movement method will have set the
4459                 * selection, so reset mSelectionMoved to keep that from
4460                 * interfering with the normal on-focus selection-setting.
4461                 */
4462                if (mEditor != null) mEditor.mSelectionMoved = false;
4463            }
4464        }
4465
4466        if (mLayout != null) {
4467            checkForRelayout();
4468        }
4469
4470        sendOnTextChanged(text, 0, oldlen, textLength);
4471        onTextChanged(text, 0, oldlen, textLength);
4472
4473        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4474
4475        if (needEditableForNotification) {
4476            sendAfterTextChanged((Editable) text);
4477        }
4478
4479        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4480        if (mEditor != null) mEditor.prepareCursorControllers();
4481    }
4482
4483    /**
4484     * Sets the TextView to display the specified slice of the specified
4485     * char array.  You must promise that you will not change the contents
4486     * of the array except for right before another call to setText(),
4487     * since the TextView has no way to know that the text
4488     * has changed and that it needs to invalidate and re-layout.
4489     */
4490    public final void setText(char[] text, int start, int len) {
4491        int oldlen = 0;
4492
4493        if (start < 0 || len < 0 || start + len > text.length) {
4494            throw new IndexOutOfBoundsException(start + ", " + len);
4495        }
4496
4497        /*
4498         * We must do the before-notification here ourselves because if
4499         * the old text is a CharWrapper we destroy it before calling
4500         * into the normal path.
4501         */
4502        if (mText != null) {
4503            oldlen = mText.length();
4504            sendBeforeTextChanged(mText, 0, oldlen, len);
4505        } else {
4506            sendBeforeTextChanged("", 0, 0, len);
4507        }
4508
4509        if (mCharWrapper == null) {
4510            mCharWrapper = new CharWrapper(text, start, len);
4511        } else {
4512            mCharWrapper.set(text, start, len);
4513        }
4514
4515        setText(mCharWrapper, mBufferType, false, oldlen);
4516    }
4517
4518    /**
4519     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4520     * except that the cursor position (if any) is retained in the new text.
4521     *
4522     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4523     */
4524    public final void setTextKeepState(CharSequence text, BufferType type) {
4525        int start = getSelectionStart();
4526        int end = getSelectionEnd();
4527        int len = text.length();
4528
4529        setText(text, type);
4530
4531        if (start >= 0 || end >= 0) {
4532            if (mText instanceof Spannable) {
4533                Selection.setSelection((Spannable) mText,
4534                                       Math.max(0, Math.min(start, len)),
4535                                       Math.max(0, Math.min(end, len)));
4536            }
4537        }
4538    }
4539
4540    @android.view.RemotableViewMethod
4541    public final void setText(@StringRes int resid) {
4542        setText(getContext().getResources().getText(resid));
4543    }
4544
4545    public final void setText(@StringRes int resid, BufferType type) {
4546        setText(getContext().getResources().getText(resid), type);
4547    }
4548
4549    /**
4550     * Sets the text to be displayed when the text of the TextView is empty.
4551     * Null means to use the normal empty text. The hint does not currently
4552     * participate in determining the size of the view.
4553     *
4554     * @attr ref android.R.styleable#TextView_hint
4555     */
4556    @android.view.RemotableViewMethod
4557    public final void setHint(CharSequence hint) {
4558        mHint = TextUtils.stringOrSpannedString(hint);
4559
4560        if (mLayout != null) {
4561            checkForRelayout();
4562        }
4563
4564        if (mText.length() == 0) {
4565            invalidate();
4566        }
4567
4568        // Invalidate display list if hint is currently used
4569        if (mEditor != null && mText.length() == 0 && mHint != null) {
4570            mEditor.invalidateTextDisplayList();
4571        }
4572    }
4573
4574    /**
4575     * Sets the text to be displayed when the text of the TextView is empty,
4576     * from a resource.
4577     *
4578     * @attr ref android.R.styleable#TextView_hint
4579     */
4580    @android.view.RemotableViewMethod
4581    public final void setHint(@StringRes int resid) {
4582        setHint(getContext().getResources().getText(resid));
4583    }
4584
4585    /**
4586     * Returns the hint that is displayed when the text of the TextView
4587     * is empty.
4588     *
4589     * @attr ref android.R.styleable#TextView_hint
4590     */
4591    @ViewDebug.CapturedViewProperty
4592    public CharSequence getHint() {
4593        return mHint;
4594    }
4595
4596    boolean isSingleLine() {
4597        return mSingleLine;
4598    }
4599
4600    private static boolean isMultilineInputType(int type) {
4601        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4602            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4603    }
4604
4605    /**
4606     * Removes the suggestion spans.
4607     */
4608    CharSequence removeSuggestionSpans(CharSequence text) {
4609       if (text instanceof Spanned) {
4610           Spannable spannable;
4611           if (text instanceof Spannable) {
4612               spannable = (Spannable) text;
4613           } else {
4614               spannable = new SpannableString(text);
4615               text = spannable;
4616           }
4617
4618           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4619           for (int i = 0; i < spans.length; i++) {
4620               spannable.removeSpan(spans[i]);
4621           }
4622       }
4623       return text;
4624    }
4625
4626    /**
4627     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4628     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4629     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4630     * then a soft keyboard will not be displayed for this text view.
4631     *
4632     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4633     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4634     * type.
4635     *
4636     * @see #getInputType()
4637     * @see #setRawInputType(int)
4638     * @see android.text.InputType
4639     * @attr ref android.R.styleable#TextView_inputType
4640     */
4641    public void setInputType(int type) {
4642        final boolean wasPassword = isPasswordInputType(getInputType());
4643        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4644        setInputType(type, false);
4645        final boolean isPassword = isPasswordInputType(type);
4646        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4647        boolean forceUpdate = false;
4648        if (isPassword) {
4649            setTransformationMethod(PasswordTransformationMethod.getInstance());
4650            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4651        } else if (isVisiblePassword) {
4652            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4653                forceUpdate = true;
4654            }
4655            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4656        } else if (wasPassword || wasVisiblePassword) {
4657            // not in password mode, clean up typeface and transformation
4658            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4659            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4660                forceUpdate = true;
4661            }
4662        }
4663
4664        boolean singleLine = !isMultilineInputType(type);
4665
4666        // We need to update the single line mode if it has changed or we
4667        // were previously in password mode.
4668        if (mSingleLine != singleLine || forceUpdate) {
4669            // Change single line mode, but only change the transformation if
4670            // we are not in password mode.
4671            applySingleLine(singleLine, !isPassword, true);
4672        }
4673
4674        if (!isSuggestionsEnabled()) {
4675            mText = removeSuggestionSpans(mText);
4676        }
4677
4678        InputMethodManager imm = InputMethodManager.peekInstance();
4679        if (imm != null) imm.restartInput(this);
4680    }
4681
4682    /**
4683     * It would be better to rely on the input type for everything. A password inputType should have
4684     * a password transformation. We should hence use isPasswordInputType instead of this method.
4685     *
4686     * We should:
4687     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4688     * would install the correct transformation).
4689     * - Refuse the installation of a non-password transformation in setTransformation if the input
4690     * type is password.
4691     *
4692     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4693     * is useful since it matches what the user can see (obfuscated text or not).
4694     *
4695     * @return true if the current transformation method is of the password type.
4696     */
4697    boolean hasPasswordTransformationMethod() {
4698        return mTransformation instanceof PasswordTransformationMethod;
4699    }
4700
4701    private static boolean isPasswordInputType(int inputType) {
4702        final int variation =
4703                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4704        return variation
4705                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4706                || variation
4707                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4708                || variation
4709                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4710    }
4711
4712    private static boolean isVisiblePasswordInputType(int inputType) {
4713        final int variation =
4714                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4715        return variation
4716                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4717    }
4718
4719    /**
4720     * Directly change the content type integer of the text view, without
4721     * modifying any other state.
4722     * @see #setInputType(int)
4723     * @see android.text.InputType
4724     * @attr ref android.R.styleable#TextView_inputType
4725     */
4726    public void setRawInputType(int type) {
4727        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4728        createEditorIfNeeded();
4729        mEditor.mInputType = type;
4730    }
4731
4732    private void setInputType(int type, boolean direct) {
4733        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4734        KeyListener input;
4735        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4736            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4737            TextKeyListener.Capitalize cap;
4738            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4739                cap = TextKeyListener.Capitalize.CHARACTERS;
4740            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4741                cap = TextKeyListener.Capitalize.WORDS;
4742            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4743                cap = TextKeyListener.Capitalize.SENTENCES;
4744            } else {
4745                cap = TextKeyListener.Capitalize.NONE;
4746            }
4747            input = TextKeyListener.getInstance(autotext, cap);
4748        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4749            input = DigitsKeyListener.getInstance(
4750                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4751                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4752        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4753            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4754                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4755                    input = DateKeyListener.getInstance();
4756                    break;
4757                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4758                    input = TimeKeyListener.getInstance();
4759                    break;
4760                default:
4761                    input = DateTimeKeyListener.getInstance();
4762                    break;
4763            }
4764        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4765            input = DialerKeyListener.getInstance();
4766        } else {
4767            input = TextKeyListener.getInstance();
4768        }
4769        setRawInputType(type);
4770        if (direct) {
4771            createEditorIfNeeded();
4772            mEditor.mKeyListener = input;
4773        } else {
4774            setKeyListenerOnly(input);
4775        }
4776    }
4777
4778    /**
4779     * Get the type of the editable content.
4780     *
4781     * @see #setInputType(int)
4782     * @see android.text.InputType
4783     */
4784    public int getInputType() {
4785        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4786    }
4787
4788    /**
4789     * Change the editor type integer associated with the text view, which
4790     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4791     * has focus.
4792     * @see #getImeOptions
4793     * @see android.view.inputmethod.EditorInfo
4794     * @attr ref android.R.styleable#TextView_imeOptions
4795     */
4796    public void setImeOptions(int imeOptions) {
4797        createEditorIfNeeded();
4798        mEditor.createInputContentTypeIfNeeded();
4799        mEditor.mInputContentType.imeOptions = imeOptions;
4800    }
4801
4802    /**
4803     * Get the type of the IME editor.
4804     *
4805     * @see #setImeOptions(int)
4806     * @see android.view.inputmethod.EditorInfo
4807     */
4808    public int getImeOptions() {
4809        return mEditor != null && mEditor.mInputContentType != null
4810                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4811    }
4812
4813    /**
4814     * Change the custom IME action associated with the text view, which
4815     * will be reported to an IME with {@link EditorInfo#actionLabel}
4816     * and {@link EditorInfo#actionId} when it has focus.
4817     * @see #getImeActionLabel
4818     * @see #getImeActionId
4819     * @see android.view.inputmethod.EditorInfo
4820     * @attr ref android.R.styleable#TextView_imeActionLabel
4821     * @attr ref android.R.styleable#TextView_imeActionId
4822     */
4823    public void setImeActionLabel(CharSequence label, int actionId) {
4824        createEditorIfNeeded();
4825        mEditor.createInputContentTypeIfNeeded();
4826        mEditor.mInputContentType.imeActionLabel = label;
4827        mEditor.mInputContentType.imeActionId = actionId;
4828    }
4829
4830    /**
4831     * Get the IME action label previous set with {@link #setImeActionLabel}.
4832     *
4833     * @see #setImeActionLabel
4834     * @see android.view.inputmethod.EditorInfo
4835     */
4836    public CharSequence getImeActionLabel() {
4837        return mEditor != null && mEditor.mInputContentType != null
4838                ? mEditor.mInputContentType.imeActionLabel : null;
4839    }
4840
4841    /**
4842     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4843     *
4844     * @see #setImeActionLabel
4845     * @see android.view.inputmethod.EditorInfo
4846     */
4847    public int getImeActionId() {
4848        return mEditor != null && mEditor.mInputContentType != null
4849                ? mEditor.mInputContentType.imeActionId : 0;
4850    }
4851
4852    /**
4853     * Set a special listener to be called when an action is performed
4854     * on the text view.  This will be called when the enter key is pressed,
4855     * or when an action supplied to the IME is selected by the user.  Setting
4856     * this means that the normal hard key event will not insert a newline
4857     * into the text view, even if it is multi-line; holding down the ALT
4858     * modifier will, however, allow the user to insert a newline character.
4859     */
4860    public void setOnEditorActionListener(OnEditorActionListener l) {
4861        createEditorIfNeeded();
4862        mEditor.createInputContentTypeIfNeeded();
4863        mEditor.mInputContentType.onEditorActionListener = l;
4864    }
4865
4866    /**
4867     * Called when an attached input method calls
4868     * {@link InputConnection#performEditorAction(int)
4869     * InputConnection.performEditorAction()}
4870     * for this text view.  The default implementation will call your action
4871     * listener supplied to {@link #setOnEditorActionListener}, or perform
4872     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4873     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4874     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4875     * EditorInfo.IME_ACTION_DONE}.
4876     *
4877     * <p>For backwards compatibility, if no IME options have been set and the
4878     * text view would not normally advance focus on enter, then
4879     * the NEXT and DONE actions received here will be turned into an enter
4880     * key down/up pair to go through the normal key handling.
4881     *
4882     * @param actionCode The code of the action being performed.
4883     *
4884     * @see #setOnEditorActionListener
4885     */
4886    public void onEditorAction(int actionCode) {
4887        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4888        if (ict != null) {
4889            if (ict.onEditorActionListener != null) {
4890                if (ict.onEditorActionListener.onEditorAction(this,
4891                        actionCode, null)) {
4892                    return;
4893                }
4894            }
4895
4896            // This is the handling for some default action.
4897            // Note that for backwards compatibility we don't do this
4898            // default handling if explicit ime options have not been given,
4899            // instead turning this into the normal enter key codes that an
4900            // app may be expecting.
4901            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4902                View v = focusSearch(FOCUS_FORWARD);
4903                if (v != null) {
4904                    if (!v.requestFocus(FOCUS_FORWARD)) {
4905                        throw new IllegalStateException("focus search returned a view " +
4906                                "that wasn't able to take focus!");
4907                    }
4908                }
4909                return;
4910
4911            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4912                View v = focusSearch(FOCUS_BACKWARD);
4913                if (v != null) {
4914                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4915                        throw new IllegalStateException("focus search returned a view " +
4916                                "that wasn't able to take focus!");
4917                    }
4918                }
4919                return;
4920
4921            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4922                InputMethodManager imm = InputMethodManager.peekInstance();
4923                if (imm != null && imm.isActive(this)) {
4924                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4925                }
4926                return;
4927            }
4928        }
4929
4930        ViewRootImpl viewRootImpl = getViewRootImpl();
4931        if (viewRootImpl != null) {
4932            long eventTime = SystemClock.uptimeMillis();
4933            viewRootImpl.dispatchKeyFromIme(
4934                    new KeyEvent(eventTime, eventTime,
4935                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4936                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4937                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4938                    | KeyEvent.FLAG_EDITOR_ACTION));
4939            viewRootImpl.dispatchKeyFromIme(
4940                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4941                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4942                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4943                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4944                    | KeyEvent.FLAG_EDITOR_ACTION));
4945        }
4946    }
4947
4948    /**
4949     * Set the private content type of the text, which is the
4950     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4951     * field that will be filled in when creating an input connection.
4952     *
4953     * @see #getPrivateImeOptions()
4954     * @see EditorInfo#privateImeOptions
4955     * @attr ref android.R.styleable#TextView_privateImeOptions
4956     */
4957    public void setPrivateImeOptions(String type) {
4958        createEditorIfNeeded();
4959        mEditor.createInputContentTypeIfNeeded();
4960        mEditor.mInputContentType.privateImeOptions = type;
4961    }
4962
4963    /**
4964     * Get the private type of the content.
4965     *
4966     * @see #setPrivateImeOptions(String)
4967     * @see EditorInfo#privateImeOptions
4968     */
4969    public String getPrivateImeOptions() {
4970        return mEditor != null && mEditor.mInputContentType != null
4971                ? mEditor.mInputContentType.privateImeOptions : null;
4972    }
4973
4974    /**
4975     * Set the extra input data of the text, which is the
4976     * {@link EditorInfo#extras TextBoxAttribute.extras}
4977     * Bundle that will be filled in when creating an input connection.  The
4978     * given integer is the resource ID of an XML resource holding an
4979     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4980     *
4981     * @see #getInputExtras(boolean)
4982     * @see EditorInfo#extras
4983     * @attr ref android.R.styleable#TextView_editorExtras
4984     */
4985    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4986        createEditorIfNeeded();
4987        XmlResourceParser parser = getResources().getXml(xmlResId);
4988        mEditor.createInputContentTypeIfNeeded();
4989        mEditor.mInputContentType.extras = new Bundle();
4990        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4991    }
4992
4993    /**
4994     * Retrieve the input extras currently associated with the text view, which
4995     * can be viewed as well as modified.
4996     *
4997     * @param create If true, the extras will be created if they don't already
4998     * exist.  Otherwise, null will be returned if none have been created.
4999     * @see #setInputExtras(int)
5000     * @see EditorInfo#extras
5001     * @attr ref android.R.styleable#TextView_editorExtras
5002     */
5003    public Bundle getInputExtras(boolean create) {
5004        if (mEditor == null && !create) return null;
5005        createEditorIfNeeded();
5006        if (mEditor.mInputContentType == null) {
5007            if (!create) return null;
5008            mEditor.createInputContentTypeIfNeeded();
5009        }
5010        if (mEditor.mInputContentType.extras == null) {
5011            if (!create) return null;
5012            mEditor.mInputContentType.extras = new Bundle();
5013        }
5014        return mEditor.mInputContentType.extras;
5015    }
5016
5017    /**
5018     * Change "hint" locales associated with the text view, which will be reported to an IME with
5019     * {@link EditorInfo#hintLocales} when it has focus.
5020     *
5021     * <p><strong>Note:</strong> If you want new "hint" to take effect immediately you need to
5022     * call {@link InputMethodManager#restartInput(View)}.</p>
5023     * @param hintLocales List of the languages that the user is supposed to switch to no matter
5024     * what input method subtype is currently used. Set {@code null} to clear the current "hint".
5025     * @see #getImeHIntLocales()
5026     * @see android.view.inputmethod.EditorInfo#hintLocales
5027     */
5028    public void setImeHintLocales(@Nullable LocaleList hintLocales) {
5029        createEditorIfNeeded();
5030        mEditor.createInputContentTypeIfNeeded();
5031        mEditor.mInputContentType.imeHintLocales = hintLocales;
5032    }
5033
5034    /**
5035     * @return The current languages list "hint". {@code null} when no "hint" is available.
5036     * @see #setImeHintLocales(LocaleList)
5037     * @see android.view.inputmethod.EditorInfo#hintLocales
5038     */
5039    @Nullable
5040    public LocaleList getImeHintLocales() {
5041        if (mEditor == null) { return null; }
5042        if (mEditor.mInputContentType == null) { return null; }
5043        return mEditor.mInputContentType.imeHintLocales;
5044    }
5045
5046    /**
5047     * Returns the error message that was set to be displayed with
5048     * {@link #setError}, or <code>null</code> if no error was set
5049     * or if it the error was cleared by the widget after user input.
5050     */
5051    public CharSequence getError() {
5052        return mEditor == null ? null : mEditor.mError;
5053    }
5054
5055    /**
5056     * Sets the right-hand compound drawable of the TextView to the "error"
5057     * icon and sets an error message that will be displayed in a popup when
5058     * the TextView has focus.  The icon and error message will be reset to
5059     * null when any key events cause changes to the TextView's text.  If the
5060     * <code>error</code> is <code>null</code>, the error message and icon
5061     * will be cleared.
5062     */
5063    @android.view.RemotableViewMethod
5064    public void setError(CharSequence error) {
5065        if (error == null) {
5066            setError(null, null);
5067        } else {
5068            Drawable dr = getContext().getDrawable(
5069                    com.android.internal.R.drawable.indicator_input_error);
5070
5071            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5072            setError(error, dr);
5073        }
5074    }
5075
5076    /**
5077     * Sets the right-hand compound drawable of the TextView to the specified
5078     * icon and sets an error message that will be displayed in a popup when
5079     * the TextView has focus.  The icon and error message will be reset to
5080     * null when any key events cause changes to the TextView's text.  The
5081     * drawable must already have had {@link Drawable#setBounds} set on it.
5082     * If the <code>error</code> is <code>null</code>, the error message will
5083     * be cleared (and you should provide a <code>null</code> icon as well).
5084     */
5085    public void setError(CharSequence error, Drawable icon) {
5086        createEditorIfNeeded();
5087        mEditor.setError(error, icon);
5088        notifyViewAccessibilityStateChangedIfNeeded(
5089                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5090    }
5091
5092    @Override
5093    protected boolean setFrame(int l, int t, int r, int b) {
5094        boolean result = super.setFrame(l, t, r, b);
5095
5096        if (mEditor != null) mEditor.setFrame();
5097
5098        restartMarqueeIfNeeded();
5099
5100        return result;
5101    }
5102
5103    private void restartMarqueeIfNeeded() {
5104        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5105            mRestartMarquee = false;
5106            startMarquee();
5107        }
5108    }
5109
5110    /**
5111     * Sets the list of input filters that will be used if the buffer is
5112     * Editable. Has no effect otherwise.
5113     *
5114     * @attr ref android.R.styleable#TextView_maxLength
5115     */
5116    public void setFilters(InputFilter[] filters) {
5117        if (filters == null) {
5118            throw new IllegalArgumentException();
5119        }
5120
5121        mFilters = filters;
5122
5123        if (mText instanceof Editable) {
5124            setFilters((Editable) mText, filters);
5125        }
5126    }
5127
5128    /**
5129     * Sets the list of input filters on the specified Editable,
5130     * and includes mInput in the list if it is an InputFilter.
5131     */
5132    private void setFilters(Editable e, InputFilter[] filters) {
5133        if (mEditor != null) {
5134            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5135            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5136            int num = 0;
5137            if (undoFilter) num++;
5138            if (keyFilter) num++;
5139            if (num > 0) {
5140                InputFilter[] nf = new InputFilter[filters.length + num];
5141
5142                System.arraycopy(filters, 0, nf, 0, filters.length);
5143                num = 0;
5144                if (undoFilter) {
5145                    nf[filters.length] = mEditor.mUndoInputFilter;
5146                    num++;
5147                }
5148                if (keyFilter) {
5149                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5150                }
5151
5152                e.setFilters(nf);
5153                return;
5154            }
5155        }
5156        e.setFilters(filters);
5157    }
5158
5159    /**
5160     * Returns the current list of input filters.
5161     *
5162     * @attr ref android.R.styleable#TextView_maxLength
5163     */
5164    public InputFilter[] getFilters() {
5165        return mFilters;
5166    }
5167
5168    /////////////////////////////////////////////////////////////////////////
5169
5170    private int getBoxHeight(Layout l) {
5171        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5172        int padding = (l == mHintLayout) ?
5173                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5174                getExtendedPaddingTop() + getExtendedPaddingBottom();
5175        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5176    }
5177
5178    int getVerticalOffset(boolean forceNormal) {
5179        int voffset = 0;
5180        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5181
5182        Layout l = mLayout;
5183        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5184            l = mHintLayout;
5185        }
5186
5187        if (gravity != Gravity.TOP) {
5188            int boxht = getBoxHeight(l);
5189            int textht = l.getHeight();
5190
5191            if (textht < boxht) {
5192                if (gravity == Gravity.BOTTOM)
5193                    voffset = boxht - textht;
5194                else // (gravity == Gravity.CENTER_VERTICAL)
5195                    voffset = (boxht - textht) >> 1;
5196            }
5197        }
5198        return voffset;
5199    }
5200
5201    private int getBottomVerticalOffset(boolean forceNormal) {
5202        int voffset = 0;
5203        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5204
5205        Layout l = mLayout;
5206        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5207            l = mHintLayout;
5208        }
5209
5210        if (gravity != Gravity.BOTTOM) {
5211            int boxht = getBoxHeight(l);
5212            int textht = l.getHeight();
5213
5214            if (textht < boxht) {
5215                if (gravity == Gravity.TOP)
5216                    voffset = boxht - textht;
5217                else // (gravity == Gravity.CENTER_VERTICAL)
5218                    voffset = (boxht - textht) >> 1;
5219            }
5220        }
5221        return voffset;
5222    }
5223
5224    void invalidateCursorPath() {
5225        if (mHighlightPathBogus) {
5226            invalidateCursor();
5227        } else {
5228            final int horizontalPadding = getCompoundPaddingLeft();
5229            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5230
5231            if (mEditor.mCursorCount == 0) {
5232                synchronized (TEMP_RECTF) {
5233                    /*
5234                     * The reason for this concern about the thickness of the
5235                     * cursor and doing the floor/ceil on the coordinates is that
5236                     * some EditTexts (notably textfields in the Browser) have
5237                     * anti-aliased text where not all the characters are
5238                     * necessarily at integer-multiple locations.  This should
5239                     * make sure the entire cursor gets invalidated instead of
5240                     * sometimes missing half a pixel.
5241                     */
5242                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5243                    if (thick < 1.0f) {
5244                        thick = 1.0f;
5245                    }
5246
5247                    thick /= 2.0f;
5248
5249                    // mHighlightPath is guaranteed to be non null at that point.
5250                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5251
5252                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5253                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5254                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5255                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5256                }
5257            } else {
5258                for (int i = 0; i < mEditor.mCursorCount; i++) {
5259                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5260                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5261                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5262                }
5263            }
5264        }
5265    }
5266
5267    void invalidateCursor() {
5268        int where = getSelectionEnd();
5269
5270        invalidateCursor(where, where, where);
5271    }
5272
5273    private void invalidateCursor(int a, int b, int c) {
5274        if (a >= 0 || b >= 0 || c >= 0) {
5275            int start = Math.min(Math.min(a, b), c);
5276            int end = Math.max(Math.max(a, b), c);
5277            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5278        }
5279    }
5280
5281    /**
5282     * Invalidates the region of text enclosed between the start and end text offsets.
5283     */
5284    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5285        if (mLayout == null) {
5286            invalidate();
5287        } else {
5288                int lineStart = mLayout.getLineForOffset(start);
5289                int top = mLayout.getLineTop(lineStart);
5290
5291                // This is ridiculous, but the descent from the line above
5292                // can hang down into the line we really want to redraw,
5293                // so we have to invalidate part of the line above to make
5294                // sure everything that needs to be redrawn really is.
5295                // (But not the whole line above, because that would cause
5296                // the same problem with the descenders on the line above it!)
5297                if (lineStart > 0) {
5298                    top -= mLayout.getLineDescent(lineStart - 1);
5299                }
5300
5301                int lineEnd;
5302
5303                if (start == end)
5304                    lineEnd = lineStart;
5305                else
5306                    lineEnd = mLayout.getLineForOffset(end);
5307
5308                int bottom = mLayout.getLineBottom(lineEnd);
5309
5310                // mEditor can be null in case selection is set programmatically.
5311                if (invalidateCursor && mEditor != null) {
5312                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5313                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5314                        top = Math.min(top, bounds.top);
5315                        bottom = Math.max(bottom, bounds.bottom);
5316                    }
5317                }
5318
5319                final int compoundPaddingLeft = getCompoundPaddingLeft();
5320                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5321
5322                int left, right;
5323                if (lineStart == lineEnd && !invalidateCursor) {
5324                    left = (int) mLayout.getPrimaryHorizontal(start);
5325                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5326                    left += compoundPaddingLeft;
5327                    right += compoundPaddingLeft;
5328                } else {
5329                    // Rectangle bounding box when the region spans several lines
5330                    left = compoundPaddingLeft;
5331                    right = getWidth() - getCompoundPaddingRight();
5332                }
5333
5334                invalidate(mScrollX + left, verticalPadding + top,
5335                        mScrollX + right, verticalPadding + bottom);
5336        }
5337    }
5338
5339    private void registerForPreDraw() {
5340        if (!mPreDrawRegistered) {
5341            getViewTreeObserver().addOnPreDrawListener(this);
5342            mPreDrawRegistered = true;
5343        }
5344    }
5345
5346    private void unregisterForPreDraw() {
5347        getViewTreeObserver().removeOnPreDrawListener(this);
5348        mPreDrawRegistered = false;
5349        mPreDrawListenerDetached = false;
5350    }
5351
5352    /**
5353     * {@inheritDoc}
5354     */
5355    public boolean onPreDraw() {
5356        if (mLayout == null) {
5357            assumeLayout();
5358        }
5359
5360        if (mMovement != null) {
5361            /* This code also provides auto-scrolling when a cursor is moved using a
5362             * CursorController (insertion point or selection limits).
5363             * For selection, ensure start or end is visible depending on controller's state.
5364             */
5365            int curs = getSelectionEnd();
5366            // Do not create the controller if it is not already created.
5367            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5368                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5369                curs = getSelectionStart();
5370            }
5371
5372            /*
5373             * TODO: This should really only keep the end in view if
5374             * it already was before the text changed.  I'm not sure
5375             * of a good way to tell from here if it was.
5376             */
5377            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5378                curs = mText.length();
5379            }
5380
5381            if (curs >= 0) {
5382                bringPointIntoView(curs);
5383            }
5384        } else {
5385            bringTextIntoView();
5386        }
5387
5388        // This has to be checked here since:
5389        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5390        //   a screen rotation) since layout is not yet initialized at that point.
5391        if (mEditor != null && mEditor.mCreatedWithASelection) {
5392            mEditor.refreshTextActionMode();
5393            mEditor.mCreatedWithASelection = false;
5394        }
5395
5396        unregisterForPreDraw();
5397
5398        return true;
5399    }
5400
5401    @Override
5402    protected void onAttachedToWindow() {
5403        super.onAttachedToWindow();
5404
5405        mTemporaryDetach = false;
5406
5407        if (mEditor != null) mEditor.onAttachedToWindow();
5408
5409        if (mPreDrawListenerDetached) {
5410            getViewTreeObserver().addOnPreDrawListener(this);
5411            mPreDrawListenerDetached = false;
5412        }
5413    }
5414
5415    /** @hide */
5416    @Override
5417    protected void onDetachedFromWindowInternal() {
5418        if (mPreDrawRegistered) {
5419            getViewTreeObserver().removeOnPreDrawListener(this);
5420            mPreDrawListenerDetached = true;
5421        }
5422
5423        resetResolvedDrawables();
5424
5425        if (mEditor != null) mEditor.onDetachedFromWindow();
5426
5427        super.onDetachedFromWindowInternal();
5428    }
5429
5430    @Override
5431    public void onScreenStateChanged(int screenState) {
5432        super.onScreenStateChanged(screenState);
5433        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5434    }
5435
5436    @Override
5437    protected boolean isPaddingOffsetRequired() {
5438        return mShadowRadius != 0 || mDrawables != null;
5439    }
5440
5441    @Override
5442    protected int getLeftPaddingOffset() {
5443        return getCompoundPaddingLeft() - mPaddingLeft +
5444                (int) Math.min(0, mShadowDx - mShadowRadius);
5445    }
5446
5447    @Override
5448    protected int getTopPaddingOffset() {
5449        return (int) Math.min(0, mShadowDy - mShadowRadius);
5450    }
5451
5452    @Override
5453    protected int getBottomPaddingOffset() {
5454        return (int) Math.max(0, mShadowDy + mShadowRadius);
5455    }
5456
5457    @Override
5458    protected int getRightPaddingOffset() {
5459        return -(getCompoundPaddingRight() - mPaddingRight) +
5460                (int) Math.max(0, mShadowDx + mShadowRadius);
5461    }
5462
5463    @Override
5464    protected boolean verifyDrawable(Drawable who) {
5465        final boolean verified = super.verifyDrawable(who);
5466        if (!verified && mDrawables != null) {
5467            for (Drawable dr : mDrawables.mShowing) {
5468                if (who == dr) {
5469                    return true;
5470                }
5471            }
5472        }
5473        return verified;
5474    }
5475
5476    @Override
5477    public void jumpDrawablesToCurrentState() {
5478        super.jumpDrawablesToCurrentState();
5479        if (mDrawables != null) {
5480            for (Drawable dr : mDrawables.mShowing) {
5481                if (dr != null) {
5482                    dr.jumpToCurrentState();
5483                }
5484            }
5485        }
5486    }
5487
5488    @Override
5489    public void invalidateDrawable(Drawable drawable) {
5490        boolean handled = false;
5491
5492        if (verifyDrawable(drawable)) {
5493            final Rect dirty = drawable.getBounds();
5494            int scrollX = mScrollX;
5495            int scrollY = mScrollY;
5496
5497            // IMPORTANT: The coordinates below are based on the coordinates computed
5498            // for each compound drawable in onDraw(). Make sure to update each section
5499            // accordingly.
5500            final TextView.Drawables drawables = mDrawables;
5501            if (drawables != null) {
5502                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5503                    final int compoundPaddingTop = getCompoundPaddingTop();
5504                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5505                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5506
5507                    scrollX += mPaddingLeft;
5508                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5509                    handled = true;
5510                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5511                    final int compoundPaddingTop = getCompoundPaddingTop();
5512                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5513                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5514
5515                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5516                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5517                    handled = true;
5518                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5519                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5520                    final int compoundPaddingRight = getCompoundPaddingRight();
5521                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5522
5523                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5524                    scrollY += mPaddingTop;
5525                    handled = true;
5526                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5527                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5528                    final int compoundPaddingRight = getCompoundPaddingRight();
5529                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5530
5531                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5532                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5533                    handled = true;
5534                }
5535            }
5536
5537            if (handled) {
5538                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5539                        dirty.right + scrollX, dirty.bottom + scrollY);
5540            }
5541        }
5542
5543        if (!handled) {
5544            super.invalidateDrawable(drawable);
5545        }
5546    }
5547
5548    @Override
5549    public boolean hasOverlappingRendering() {
5550        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5551        return ((getBackground() != null && getBackground().getCurrent() != null)
5552                || mText instanceof Spannable || hasSelection()
5553                || isHorizontalFadingEdgeEnabled());
5554    }
5555
5556    /**
5557     *
5558     * Returns the state of the {@code textIsSelectable} flag (See
5559     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5560     * to allow users to select and copy text in a non-editable TextView, the content of an
5561     * {@link EditText} can always be selected, independently of the value of this flag.
5562     * <p>
5563     *
5564     * @return True if the text displayed in this TextView can be selected by the user.
5565     *
5566     * @attr ref android.R.styleable#TextView_textIsSelectable
5567     */
5568    public boolean isTextSelectable() {
5569        return mEditor == null ? false : mEditor.mTextIsSelectable;
5570    }
5571
5572    /**
5573     * Sets whether the content of this view is selectable by the user. The default is
5574     * {@code false}, meaning that the content is not selectable.
5575     * <p>
5576     * When you use a TextView to display a useful piece of information to the user (such as a
5577     * contact's address), make it selectable, so that the user can select and copy its
5578     * content. You can also use set the XML attribute
5579     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5580     * <p>
5581     * When you call this method to set the value of {@code textIsSelectable}, it sets
5582     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5583     * and {@code longClickable} to the same value. These flags correspond to the attributes
5584     * {@link android.R.styleable#View_focusable android:focusable},
5585     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5586     * {@link android.R.styleable#View_clickable android:clickable}, and
5587     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5588     * flags to a state you had set previously, call one or more of the following methods:
5589     * {@link #setFocusable(boolean) setFocusable()},
5590     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5591     * {@link #setClickable(boolean) setClickable()} or
5592     * {@link #setLongClickable(boolean) setLongClickable()}.
5593     *
5594     * @param selectable Whether the content of this TextView should be selectable.
5595     */
5596    public void setTextIsSelectable(boolean selectable) {
5597        if (!selectable && mEditor == null) return; // false is default value with no edit data
5598
5599        createEditorIfNeeded();
5600        if (mEditor.mTextIsSelectable == selectable) return;
5601
5602        mEditor.mTextIsSelectable = selectable;
5603        setFocusableInTouchMode(selectable);
5604        setFocusable(selectable);
5605        setClickable(selectable);
5606        setLongClickable(selectable);
5607
5608        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5609
5610        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5611        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5612
5613        // Called by setText above, but safer in case of future code changes
5614        mEditor.prepareCursorControllers();
5615    }
5616
5617    @Override
5618    protected int[] onCreateDrawableState(int extraSpace) {
5619        final int[] drawableState;
5620
5621        if (mSingleLine) {
5622            drawableState = super.onCreateDrawableState(extraSpace);
5623        } else {
5624            drawableState = super.onCreateDrawableState(extraSpace + 1);
5625            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5626        }
5627
5628        if (isTextSelectable()) {
5629            // Disable pressed state, which was introduced when TextView was made clickable.
5630            // Prevents text color change.
5631            // setClickable(false) would have a similar effect, but it also disables focus changes
5632            // and long press actions, which are both needed by text selection.
5633            final int length = drawableState.length;
5634            for (int i = 0; i < length; i++) {
5635                if (drawableState[i] == R.attr.state_pressed) {
5636                    final int[] nonPressedState = new int[length - 1];
5637                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5638                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5639                    return nonPressedState;
5640                }
5641            }
5642        }
5643
5644        return drawableState;
5645    }
5646
5647    private Path getUpdatedHighlightPath() {
5648        Path highlight = null;
5649        Paint highlightPaint = mHighlightPaint;
5650
5651        final int selStart = getSelectionStart();
5652        final int selEnd = getSelectionEnd();
5653        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5654            if (selStart == selEnd) {
5655                if (mEditor != null && mEditor.isCursorVisible() &&
5656                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5657                        (2 * Editor.BLINK) < Editor.BLINK) {
5658                    if (mHighlightPathBogus) {
5659                        if (mHighlightPath == null) mHighlightPath = new Path();
5660                        mHighlightPath.reset();
5661                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5662                        mEditor.updateCursorsPositions();
5663                        mHighlightPathBogus = false;
5664                    }
5665
5666                    // XXX should pass to skin instead of drawing directly
5667                    highlightPaint.setColor(mCurTextColor);
5668                    highlightPaint.setStyle(Paint.Style.STROKE);
5669                    highlight = mHighlightPath;
5670                }
5671            } else {
5672                if (mHighlightPathBogus) {
5673                    if (mHighlightPath == null) mHighlightPath = new Path();
5674                    mHighlightPath.reset();
5675                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5676                    mHighlightPathBogus = false;
5677                }
5678
5679                // XXX should pass to skin instead of drawing directly
5680                highlightPaint.setColor(mHighlightColor);
5681                highlightPaint.setStyle(Paint.Style.FILL);
5682
5683                highlight = mHighlightPath;
5684            }
5685        }
5686        return highlight;
5687    }
5688
5689    /**
5690     * @hide
5691     */
5692    public int getHorizontalOffsetForDrawables() {
5693        return 0;
5694    }
5695
5696    @Override
5697    protected void onDraw(Canvas canvas) {
5698        restartMarqueeIfNeeded();
5699
5700        // Draw the background for this view
5701        super.onDraw(canvas);
5702
5703        final int compoundPaddingLeft = getCompoundPaddingLeft();
5704        final int compoundPaddingTop = getCompoundPaddingTop();
5705        final int compoundPaddingRight = getCompoundPaddingRight();
5706        final int compoundPaddingBottom = getCompoundPaddingBottom();
5707        final int scrollX = mScrollX;
5708        final int scrollY = mScrollY;
5709        final int right = mRight;
5710        final int left = mLeft;
5711        final int bottom = mBottom;
5712        final int top = mTop;
5713        final boolean isLayoutRtl = isLayoutRtl();
5714        final int offset = getHorizontalOffsetForDrawables();
5715        final int leftOffset = isLayoutRtl ? 0 : offset;
5716        final int rightOffset = isLayoutRtl ? offset : 0 ;
5717
5718        final Drawables dr = mDrawables;
5719        if (dr != null) {
5720            /*
5721             * Compound, not extended, because the icon is not clipped
5722             * if the text height is smaller.
5723             */
5724
5725            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5726            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5727
5728            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5729            // Make sure to update invalidateDrawable() when changing this code.
5730            if (dr.mShowing[Drawables.LEFT] != null) {
5731                canvas.save();
5732                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5733                                 scrollY + compoundPaddingTop +
5734                                 (vspace - dr.mDrawableHeightLeft) / 2);
5735                dr.mShowing[Drawables.LEFT].draw(canvas);
5736                canvas.restore();
5737            }
5738
5739            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5740            // Make sure to update invalidateDrawable() when changing this code.
5741            if (dr.mShowing[Drawables.RIGHT] != null) {
5742                canvas.save();
5743                canvas.translate(scrollX + right - left - mPaddingRight
5744                        - dr.mDrawableSizeRight - rightOffset,
5745                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5746                dr.mShowing[Drawables.RIGHT].draw(canvas);
5747                canvas.restore();
5748            }
5749
5750            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5751            // Make sure to update invalidateDrawable() when changing this code.
5752            if (dr.mShowing[Drawables.TOP] != null) {
5753                canvas.save();
5754                canvas.translate(scrollX + compoundPaddingLeft +
5755                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5756                dr.mShowing[Drawables.TOP].draw(canvas);
5757                canvas.restore();
5758            }
5759
5760            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5761            // Make sure to update invalidateDrawable() when changing this code.
5762            if (dr.mShowing[Drawables.BOTTOM] != null) {
5763                canvas.save();
5764                canvas.translate(scrollX + compoundPaddingLeft +
5765                        (hspace - dr.mDrawableWidthBottom) / 2,
5766                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5767                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5768                canvas.restore();
5769            }
5770        }
5771
5772        int color = mCurTextColor;
5773
5774        if (mLayout == null) {
5775            assumeLayout();
5776        }
5777
5778        Layout layout = mLayout;
5779
5780        if (mHint != null && mText.length() == 0) {
5781            if (mHintTextColor != null) {
5782                color = mCurHintTextColor;
5783            }
5784
5785            layout = mHintLayout;
5786        }
5787
5788        mTextPaint.setColor(color);
5789        mTextPaint.drawableState = getDrawableState();
5790
5791        canvas.save();
5792        /*  Would be faster if we didn't have to do this. Can we chop the
5793            (displayable) text so that we don't need to do this ever?
5794        */
5795
5796        int extendedPaddingTop = getExtendedPaddingTop();
5797        int extendedPaddingBottom = getExtendedPaddingBottom();
5798
5799        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5800        final int maxScrollY = mLayout.getHeight() - vspace;
5801
5802        float clipLeft = compoundPaddingLeft + scrollX;
5803        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5804        float clipRight = right - left - getCompoundPaddingRight() + scrollX;
5805        float clipBottom = bottom - top + scrollY -
5806                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5807
5808        if (mShadowRadius != 0) {
5809            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5810            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5811
5812            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5813            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5814        }
5815
5816        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5817
5818        int voffsetText = 0;
5819        int voffsetCursor = 0;
5820
5821        // translate in by our padding
5822        /* shortcircuit calling getVerticaOffset() */
5823        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5824            voffsetText = getVerticalOffset(false);
5825            voffsetCursor = getVerticalOffset(true);
5826        }
5827        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5828
5829        final int layoutDirection = getLayoutDirection();
5830        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5831        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5832                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5833            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5834                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5835                final int width = mRight - mLeft;
5836                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5837                final float dx = mLayout.getLineRight(0) - (width - padding);
5838                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5839            }
5840
5841            if (mMarquee != null && mMarquee.isRunning()) {
5842                final float dx = -mMarquee.getScroll();
5843                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5844            }
5845        }
5846
5847        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5848
5849        Path highlight = getUpdatedHighlightPath();
5850        if (mEditor != null) {
5851            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5852        } else {
5853            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5854        }
5855
5856        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5857            final float dx = mMarquee.getGhostOffset();
5858            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5859            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5860        }
5861
5862        canvas.restore();
5863    }
5864
5865    @Override
5866    public void getFocusedRect(Rect r) {
5867        if (mLayout == null) {
5868            super.getFocusedRect(r);
5869            return;
5870        }
5871
5872        int selEnd = getSelectionEnd();
5873        if (selEnd < 0) {
5874            super.getFocusedRect(r);
5875            return;
5876        }
5877
5878        int selStart = getSelectionStart();
5879        if (selStart < 0 || selStart >= selEnd) {
5880            int line = mLayout.getLineForOffset(selEnd);
5881            r.top = mLayout.getLineTop(line);
5882            r.bottom = mLayout.getLineBottom(line);
5883            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5884            r.right = r.left + 4;
5885        } else {
5886            int lineStart = mLayout.getLineForOffset(selStart);
5887            int lineEnd = mLayout.getLineForOffset(selEnd);
5888            r.top = mLayout.getLineTop(lineStart);
5889            r.bottom = mLayout.getLineBottom(lineEnd);
5890            if (lineStart == lineEnd) {
5891                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5892                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5893            } else {
5894                // Selection extends across multiple lines -- make the focused
5895                // rect cover the entire width.
5896                if (mHighlightPathBogus) {
5897                    if (mHighlightPath == null) mHighlightPath = new Path();
5898                    mHighlightPath.reset();
5899                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5900                    mHighlightPathBogus = false;
5901                }
5902                synchronized (TEMP_RECTF) {
5903                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5904                    r.left = (int)TEMP_RECTF.left-1;
5905                    r.right = (int)TEMP_RECTF.right+1;
5906                }
5907            }
5908        }
5909
5910        // Adjust for padding and gravity.
5911        int paddingLeft = getCompoundPaddingLeft();
5912        int paddingTop = getExtendedPaddingTop();
5913        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5914            paddingTop += getVerticalOffset(false);
5915        }
5916        r.offset(paddingLeft, paddingTop);
5917        int paddingBottom = getExtendedPaddingBottom();
5918        r.bottom += paddingBottom;
5919    }
5920
5921    /**
5922     * Return the number of lines of text, or 0 if the internal Layout has not
5923     * been built.
5924     */
5925    public int getLineCount() {
5926        return mLayout != null ? mLayout.getLineCount() : 0;
5927    }
5928
5929    /**
5930     * Return the baseline for the specified line (0...getLineCount() - 1)
5931     * If bounds is not null, return the top, left, right, bottom extents
5932     * of the specified line in it. If the internal Layout has not been built,
5933     * return 0 and set bounds to (0, 0, 0, 0)
5934     * @param line which line to examine (0..getLineCount() - 1)
5935     * @param bounds Optional. If not null, it returns the extent of the line
5936     * @return the Y-coordinate of the baseline
5937     */
5938    public int getLineBounds(int line, Rect bounds) {
5939        if (mLayout == null) {
5940            if (bounds != null) {
5941                bounds.set(0, 0, 0, 0);
5942            }
5943            return 0;
5944        }
5945        else {
5946            int baseline = mLayout.getLineBounds(line, bounds);
5947
5948            int voffset = getExtendedPaddingTop();
5949            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5950                voffset += getVerticalOffset(true);
5951            }
5952            if (bounds != null) {
5953                bounds.offset(getCompoundPaddingLeft(), voffset);
5954            }
5955            return baseline + voffset;
5956        }
5957    }
5958
5959    @Override
5960    public int getBaseline() {
5961        if (mLayout == null) {
5962            return super.getBaseline();
5963        }
5964
5965        return getBaselineOffset() + mLayout.getLineBaseline(0);
5966    }
5967
5968    int getBaselineOffset() {
5969        int voffset = 0;
5970        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5971            voffset = getVerticalOffset(true);
5972        }
5973
5974        if (isLayoutModeOptical(mParent)) {
5975            voffset -= getOpticalInsets().top;
5976        }
5977
5978        return getExtendedPaddingTop() + voffset;
5979    }
5980
5981    /**
5982     * @hide
5983     */
5984    @Override
5985    protected int getFadeTop(boolean offsetRequired) {
5986        if (mLayout == null) return 0;
5987
5988        int voffset = 0;
5989        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5990            voffset = getVerticalOffset(true);
5991        }
5992
5993        if (offsetRequired) voffset += getTopPaddingOffset();
5994
5995        return getExtendedPaddingTop() + voffset;
5996    }
5997
5998    /**
5999     * @hide
6000     */
6001    @Override
6002    protected int getFadeHeight(boolean offsetRequired) {
6003        return mLayout != null ? mLayout.getHeight() : 0;
6004    }
6005
6006    @Override
6007    public PointerIcon getPointerIcon(MotionEvent event, float x, float y) {
6008        if (mText instanceof Spannable && mLinksClickable) {
6009            final int offset = getOffsetForPosition(x, y);
6010            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
6011                    ClickableSpan.class);
6012            if (clickables.length > 0) {
6013                return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_HAND);
6014            }
6015        }
6016        if (isTextSelectable() || isTextEditable()) {
6017            return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_TEXT);
6018        }
6019        return super.getPointerIcon(event, x, y);
6020    }
6021
6022    @Override
6023    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
6024        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
6025        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
6026        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
6027        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
6028            return true;
6029        }
6030        return super.onKeyPreIme(keyCode, event);
6031    }
6032
6033    /**
6034     * @hide
6035     */
6036    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
6037        // Do nothing unless mEditor is in text action mode.
6038        if (mEditor == null || mEditor.mTextActionMode == null) {
6039            return false;
6040        }
6041
6042        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
6043            KeyEvent.DispatcherState state = getKeyDispatcherState();
6044            if (state != null) {
6045                state.startTracking(event, this);
6046            }
6047            return true;
6048        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6049            KeyEvent.DispatcherState state = getKeyDispatcherState();
6050            if (state != null) {
6051                state.handleUpEvent(event);
6052            }
6053            if (event.isTracking() && !event.isCanceled()) {
6054                stopTextActionMode();
6055                return true;
6056            }
6057        }
6058        return false;
6059    }
6060
6061    @Override
6062    public boolean onKeyDown(int keyCode, KeyEvent event) {
6063        final int which = doKeyDown(keyCode, event, null);
6064        if (which == KEY_EVENT_NOT_HANDLED) {
6065            return super.onKeyDown(keyCode, event);
6066        }
6067
6068        return true;
6069    }
6070
6071    @Override
6072    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6073        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6074        final int which = doKeyDown(keyCode, down, event);
6075        if (which == KEY_EVENT_NOT_HANDLED) {
6076            // Go through default dispatching.
6077            return super.onKeyMultiple(keyCode, repeatCount, event);
6078        }
6079        if (which == KEY_EVENT_HANDLED) {
6080            // Consumed the whole thing.
6081            return true;
6082        }
6083
6084        repeatCount--;
6085
6086        // We are going to dispatch the remaining events to either the input
6087        // or movement method.  To do this, we will just send a repeated stream
6088        // of down and up events until we have done the complete repeatCount.
6089        // It would be nice if those interfaces had an onKeyMultiple() method,
6090        // but adding that is a more complicated change.
6091        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6092        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6093            // mEditor and mEditor.mInput are not null from doKeyDown
6094            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6095            while (--repeatCount > 0) {
6096                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6097                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6098            }
6099            hideErrorIfUnchanged();
6100
6101        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6102            // mMovement is not null from doKeyDown
6103            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6104            while (--repeatCount > 0) {
6105                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6106                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6107            }
6108        }
6109
6110        return true;
6111    }
6112
6113    /**
6114     * Returns true if pressing ENTER in this field advances focus instead
6115     * of inserting the character.  This is true mostly in single-line fields,
6116     * but also in mail addresses and subjects which will display on multiple
6117     * lines but where it doesn't make sense to insert newlines.
6118     */
6119    private boolean shouldAdvanceFocusOnEnter() {
6120        if (getKeyListener() == null) {
6121            return false;
6122        }
6123
6124        if (mSingleLine) {
6125            return true;
6126        }
6127
6128        if (mEditor != null &&
6129                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6130            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6131            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6132                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6133                return true;
6134            }
6135        }
6136
6137        return false;
6138    }
6139
6140    /**
6141     * Returns true if pressing TAB in this field advances focus instead
6142     * of inserting the character.  Insert tabs only in multi-line editors.
6143     */
6144    private boolean shouldAdvanceFocusOnTab() {
6145        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6146                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6147            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6148            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6149                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6150                return false;
6151            }
6152        }
6153        return true;
6154    }
6155
6156    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6157        if (!isEnabled()) {
6158            return KEY_EVENT_NOT_HANDLED;
6159        }
6160
6161        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6162        // While this shouldn't be necessary because any time we're preventing default movement we
6163        // should be restricting the focus to remain within this view, thus we'll also receive
6164        // the key up event, occasionally key up events will get dropped and we don't want to
6165        // prevent the user from traversing out of this on the next key down.
6166        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6167            mPreventDefaultMovement = false;
6168        }
6169
6170        switch (keyCode) {
6171            case KeyEvent.KEYCODE_ENTER:
6172                if (event.hasNoModifiers()) {
6173                    // When mInputContentType is set, we know that we are
6174                    // running in a "modern" cupcake environment, so don't need
6175                    // to worry about the application trying to capture
6176                    // enter key events.
6177                    if (mEditor != null && mEditor.mInputContentType != null) {
6178                        // If there is an action listener, given them a
6179                        // chance to consume the event.
6180                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6181                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6182                                this, EditorInfo.IME_NULL, event)) {
6183                            mEditor.mInputContentType.enterDown = true;
6184                            // We are consuming the enter key for them.
6185                            return KEY_EVENT_HANDLED;
6186                        }
6187                    }
6188
6189                    // If our editor should move focus when enter is pressed, or
6190                    // this is a generated event from an IME action button, then
6191                    // don't let it be inserted into the text.
6192                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6193                            || shouldAdvanceFocusOnEnter()) {
6194                        if (hasOnClickListeners()) {
6195                            return KEY_EVENT_NOT_HANDLED;
6196                        }
6197                        return KEY_EVENT_HANDLED;
6198                    }
6199                }
6200                break;
6201
6202            case KeyEvent.KEYCODE_DPAD_CENTER:
6203                if (event.hasNoModifiers()) {
6204                    if (shouldAdvanceFocusOnEnter()) {
6205                        return KEY_EVENT_NOT_HANDLED;
6206                    }
6207                }
6208                break;
6209
6210            case KeyEvent.KEYCODE_TAB:
6211                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6212                    if (shouldAdvanceFocusOnTab()) {
6213                        return KEY_EVENT_NOT_HANDLED;
6214                    }
6215                }
6216                break;
6217
6218                // Has to be done on key down (and not on key up) to correctly be intercepted.
6219            case KeyEvent.KEYCODE_BACK:
6220                if (mEditor != null && mEditor.mTextActionMode != null) {
6221                    stopTextActionMode();
6222                    return KEY_EVENT_HANDLED;
6223                }
6224                break;
6225
6226            case KeyEvent.KEYCODE_CUT:
6227                if (event.hasNoModifiers() && canCut()) {
6228                    if (onTextContextMenuItem(ID_CUT)) {
6229                        return KEY_EVENT_HANDLED;
6230                    }
6231                }
6232                break;
6233
6234            case KeyEvent.KEYCODE_COPY:
6235                if (event.hasNoModifiers() && canCopy()) {
6236                    if (onTextContextMenuItem(ID_COPY)) {
6237                        return KEY_EVENT_HANDLED;
6238                    }
6239                }
6240                break;
6241
6242            case KeyEvent.KEYCODE_PASTE:
6243                if (event.hasNoModifiers() && canPaste()) {
6244                    if (onTextContextMenuItem(ID_PASTE)) {
6245                        return KEY_EVENT_HANDLED;
6246                    }
6247                }
6248                break;
6249        }
6250
6251        if (mEditor != null && mEditor.mKeyListener != null) {
6252            boolean doDown = true;
6253            if (otherEvent != null) {
6254                try {
6255                    beginBatchEdit();
6256                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6257                            otherEvent);
6258                    hideErrorIfUnchanged();
6259                    doDown = false;
6260                    if (handled) {
6261                        return KEY_EVENT_HANDLED;
6262                    }
6263                } catch (AbstractMethodError e) {
6264                    // onKeyOther was added after 1.0, so if it isn't
6265                    // implemented we need to try to dispatch as a regular down.
6266                } finally {
6267                    endBatchEdit();
6268                }
6269            }
6270
6271            if (doDown) {
6272                beginBatchEdit();
6273                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6274                        keyCode, event);
6275                endBatchEdit();
6276                hideErrorIfUnchanged();
6277                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6278            }
6279        }
6280
6281        // bug 650865: sometimes we get a key event before a layout.
6282        // don't try to move around if we don't know the layout.
6283
6284        if (mMovement != null && mLayout != null) {
6285            boolean doDown = true;
6286            if (otherEvent != null) {
6287                try {
6288                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6289                            otherEvent);
6290                    doDown = false;
6291                    if (handled) {
6292                        return KEY_EVENT_HANDLED;
6293                    }
6294                } catch (AbstractMethodError e) {
6295                    // onKeyOther was added after 1.0, so if it isn't
6296                    // implemented we need to try to dispatch as a regular down.
6297                }
6298            }
6299            if (doDown) {
6300                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6301                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6302                        mPreventDefaultMovement = true;
6303                    }
6304                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6305                }
6306            }
6307        }
6308
6309        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6310                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6311    }
6312
6313    /**
6314     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6315     * can be recorded.
6316     * @hide
6317     */
6318    public void resetErrorChangedFlag() {
6319        /*
6320         * Keep track of what the error was before doing the input
6321         * so that if an input filter changed the error, we leave
6322         * that error showing.  Otherwise, we take down whatever
6323         * error was showing when the user types something.
6324         */
6325        if (mEditor != null) mEditor.mErrorWasChanged = false;
6326    }
6327
6328    /**
6329     * @hide
6330     */
6331    public void hideErrorIfUnchanged() {
6332        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6333            setError(null, null);
6334        }
6335    }
6336
6337    @Override
6338    public boolean onKeyUp(int keyCode, KeyEvent event) {
6339        if (!isEnabled()) {
6340            return super.onKeyUp(keyCode, event);
6341        }
6342
6343        if (!KeyEvent.isModifierKey(keyCode)) {
6344            mPreventDefaultMovement = false;
6345        }
6346
6347        switch (keyCode) {
6348            case KeyEvent.KEYCODE_DPAD_CENTER:
6349                if (event.hasNoModifiers()) {
6350                    /*
6351                     * If there is a click listener, just call through to
6352                     * super, which will invoke it.
6353                     *
6354                     * If there isn't a click listener, try to show the soft
6355                     * input method.  (It will also
6356                     * call performClick(), but that won't do anything in
6357                     * this case.)
6358                     */
6359                    if (!hasOnClickListeners()) {
6360                        if (mMovement != null && mText instanceof Editable
6361                                && mLayout != null && onCheckIsTextEditor()) {
6362                            InputMethodManager imm = InputMethodManager.peekInstance();
6363                            viewClicked(imm);
6364                            if (imm != null && getShowSoftInputOnFocus()) {
6365                                imm.showSoftInput(this, 0);
6366                            }
6367                        }
6368                    }
6369                }
6370                return super.onKeyUp(keyCode, event);
6371
6372            case KeyEvent.KEYCODE_ENTER:
6373                if (event.hasNoModifiers()) {
6374                    if (mEditor != null && mEditor.mInputContentType != null
6375                            && mEditor.mInputContentType.onEditorActionListener != null
6376                            && mEditor.mInputContentType.enterDown) {
6377                        mEditor.mInputContentType.enterDown = false;
6378                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6379                                this, EditorInfo.IME_NULL, event)) {
6380                            return true;
6381                        }
6382                    }
6383
6384                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6385                            || shouldAdvanceFocusOnEnter()) {
6386                        /*
6387                         * If there is a click listener, just call through to
6388                         * super, which will invoke it.
6389                         *
6390                         * If there isn't a click listener, try to advance focus,
6391                         * but still call through to super, which will reset the
6392                         * pressed state and longpress state.  (It will also
6393                         * call performClick(), but that won't do anything in
6394                         * this case.)
6395                         */
6396                        if (!hasOnClickListeners()) {
6397                            View v = focusSearch(FOCUS_DOWN);
6398
6399                            if (v != null) {
6400                                if (!v.requestFocus(FOCUS_DOWN)) {
6401                                    throw new IllegalStateException(
6402                                            "focus search returned a view " +
6403                                            "that wasn't able to take focus!");
6404                                }
6405
6406                                /*
6407                                 * Return true because we handled the key; super
6408                                 * will return false because there was no click
6409                                 * listener.
6410                                 */
6411                                super.onKeyUp(keyCode, event);
6412                                return true;
6413                            } else if ((event.getFlags()
6414                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6415                                // No target for next focus, but make sure the IME
6416                                // if this came from it.
6417                                InputMethodManager imm = InputMethodManager.peekInstance();
6418                                if (imm != null && imm.isActive(this)) {
6419                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6420                                }
6421                            }
6422                        }
6423                    }
6424                    return super.onKeyUp(keyCode, event);
6425                }
6426                break;
6427        }
6428
6429        if (mEditor != null && mEditor.mKeyListener != null)
6430            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6431                return true;
6432
6433        if (mMovement != null && mLayout != null)
6434            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6435                return true;
6436
6437        return super.onKeyUp(keyCode, event);
6438    }
6439
6440    @Override
6441    public boolean onCheckIsTextEditor() {
6442        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6443    }
6444
6445    @Override
6446    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6447        if (onCheckIsTextEditor() && isEnabled()) {
6448            mEditor.createInputMethodStateIfNeeded();
6449            outAttrs.inputType = getInputType();
6450            if (mEditor.mInputContentType != null) {
6451                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6452                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6453                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6454                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6455                outAttrs.extras = mEditor.mInputContentType.extras;
6456                outAttrs.hintLocales = mEditor.mInputContentType.imeHintLocales;
6457            } else {
6458                outAttrs.imeOptions = EditorInfo.IME_NULL;
6459                outAttrs.hintLocales = null;
6460            }
6461            if (focusSearch(FOCUS_DOWN) != null) {
6462                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6463            }
6464            if (focusSearch(FOCUS_UP) != null) {
6465                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6466            }
6467            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6468                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6469                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6470                    // An action has not been set, but the enter key will move to
6471                    // the next focus, so set the action to that.
6472                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6473                } else {
6474                    // An action has not been set, and there is no focus to move
6475                    // to, so let's just supply a "done" action.
6476                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6477                }
6478                if (!shouldAdvanceFocusOnEnter()) {
6479                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6480                }
6481            }
6482            if (isMultilineInputType(outAttrs.inputType)) {
6483                // Multi-line text editors should always show an enter key.
6484                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6485            }
6486            outAttrs.hintText = mHint;
6487            if (mText instanceof Editable) {
6488                InputConnection ic = new EditableInputConnection(this);
6489                outAttrs.initialSelStart = getSelectionStart();
6490                outAttrs.initialSelEnd = getSelectionEnd();
6491                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6492                return ic;
6493            }
6494        }
6495        return null;
6496    }
6497
6498    /**
6499     * If this TextView contains editable content, extract a portion of it
6500     * based on the information in <var>request</var> in to <var>outText</var>.
6501     * @return Returns true if the text was successfully extracted, else false.
6502     */
6503    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6504        createEditorIfNeeded();
6505        return mEditor.extractText(request, outText);
6506    }
6507
6508    /**
6509     * This is used to remove all style-impacting spans from text before new
6510     * extracted text is being replaced into it, so that we don't have any
6511     * lingering spans applied during the replace.
6512     */
6513    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6514        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6515        int i = spans.length;
6516        while (i > 0) {
6517            i--;
6518            spannable.removeSpan(spans[i]);
6519        }
6520    }
6521
6522    /**
6523     * Apply to this text view the given extracted text, as previously
6524     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6525     */
6526    public void setExtractedText(ExtractedText text) {
6527        Editable content = getEditableText();
6528        if (text.text != null) {
6529            if (content == null) {
6530                setText(text.text, TextView.BufferType.EDITABLE);
6531            } else {
6532                int start = 0;
6533                int end = content.length();
6534
6535                if (text.partialStartOffset >= 0) {
6536                    final int N = content.length();
6537                    start = text.partialStartOffset;
6538                    if (start > N) start = N;
6539                    end = text.partialEndOffset;
6540                    if (end > N) end = N;
6541                }
6542
6543                removeParcelableSpans(content, start, end);
6544                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6545                    if (text.text instanceof Spanned) {
6546                        // OK to copy spans only.
6547                        TextUtils.copySpansFrom((Spanned) text.text, start, end,
6548                                Object.class, content, start);
6549                    }
6550                } else {
6551                    content.replace(start, end, text.text);
6552                }
6553            }
6554        }
6555
6556        // Now set the selection position...  make sure it is in range, to
6557        // avoid crashes.  If this is a partial update, it is possible that
6558        // the underlying text may have changed, causing us problems here.
6559        // Also we just don't want to trust clients to do the right thing.
6560        Spannable sp = (Spannable)getText();
6561        final int N = sp.length();
6562        int start = text.selectionStart;
6563        if (start < 0) start = 0;
6564        else if (start > N) start = N;
6565        int end = text.selectionEnd;
6566        if (end < 0) end = 0;
6567        else if (end > N) end = N;
6568        Selection.setSelection(sp, start, end);
6569
6570        // Finally, update the selection mode.
6571        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6572            MetaKeyKeyListener.startSelecting(this, sp);
6573        } else {
6574            MetaKeyKeyListener.stopSelecting(this, sp);
6575        }
6576    }
6577
6578    /**
6579     * @hide
6580     */
6581    public void setExtracting(ExtractedTextRequest req) {
6582        if (mEditor.mInputMethodState != null) {
6583            mEditor.mInputMethodState.mExtractedTextRequest = req;
6584        }
6585        // This would stop a possible selection mode, but no such mode is started in case
6586        // extracted mode will start. Some text is selected though, and will trigger an action mode
6587        // in the extracted view.
6588        mEditor.hideCursorAndSpanControllers();
6589        stopTextActionMode();
6590        if (mEditor.mSelectionModifierCursorController != null) {
6591            mEditor.mSelectionModifierCursorController.resetTouchOffsets();
6592        }
6593    }
6594
6595    /**
6596     * Called by the framework in response to a text completion from
6597     * the current input method, provided by it calling
6598     * {@link InputConnection#commitCompletion
6599     * InputConnection.commitCompletion()}.  The default implementation does
6600     * nothing; text views that are supporting auto-completion should override
6601     * this to do their desired behavior.
6602     *
6603     * @param text The auto complete text the user has selected.
6604     */
6605    public void onCommitCompletion(CompletionInfo text) {
6606        // intentionally empty
6607    }
6608
6609    /**
6610     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6611     * a dictionnary) from the current input method, provided by it calling
6612     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6613     * implementation flashes the background of the corrected word to provide feedback to the user.
6614     *
6615     * @param info The auto correct info about the text that was corrected.
6616     */
6617    public void onCommitCorrection(CorrectionInfo info) {
6618        if (mEditor != null) mEditor.onCommitCorrection(info);
6619    }
6620
6621    public void beginBatchEdit() {
6622        if (mEditor != null) mEditor.beginBatchEdit();
6623    }
6624
6625    public void endBatchEdit() {
6626        if (mEditor != null) mEditor.endBatchEdit();
6627    }
6628
6629    /**
6630     * Called by the framework in response to a request to begin a batch
6631     * of edit operations through a call to link {@link #beginBatchEdit()}.
6632     */
6633    public void onBeginBatchEdit() {
6634        // intentionally empty
6635    }
6636
6637    /**
6638     * Called by the framework in response to a request to end a batch
6639     * of edit operations through a call to link {@link #endBatchEdit}.
6640     */
6641    public void onEndBatchEdit() {
6642        // intentionally empty
6643    }
6644
6645    /**
6646     * Called by the framework in response to a private command from the
6647     * current method, provided by it calling
6648     * {@link InputConnection#performPrivateCommand
6649     * InputConnection.performPrivateCommand()}.
6650     *
6651     * @param action The action name of the command.
6652     * @param data Any additional data for the command.  This may be null.
6653     * @return Return true if you handled the command, else false.
6654     */
6655    public boolean onPrivateIMECommand(String action, Bundle data) {
6656        return false;
6657    }
6658
6659    private void nullLayouts() {
6660        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6661            mSavedLayout = (BoringLayout) mLayout;
6662        }
6663        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6664            mSavedHintLayout = (BoringLayout) mHintLayout;
6665        }
6666
6667        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6668
6669        mBoring = mHintBoring = null;
6670
6671        // Since it depends on the value of mLayout
6672        if (mEditor != null) mEditor.prepareCursorControllers();
6673    }
6674
6675    /**
6676     * Make a new Layout based on the already-measured size of the view,
6677     * on the assumption that it was measured correctly at some point.
6678     */
6679    private void assumeLayout() {
6680        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6681
6682        if (width < 1) {
6683            width = 0;
6684        }
6685
6686        int physicalWidth = width;
6687
6688        if (mHorizontallyScrolling) {
6689            width = VERY_WIDE;
6690        }
6691
6692        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6693                      physicalWidth, false);
6694    }
6695
6696    private Layout.Alignment getLayoutAlignment() {
6697        Layout.Alignment alignment;
6698        switch (getTextAlignment()) {
6699            case TEXT_ALIGNMENT_GRAVITY:
6700                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6701                    case Gravity.START:
6702                        alignment = Layout.Alignment.ALIGN_NORMAL;
6703                        break;
6704                    case Gravity.END:
6705                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6706                        break;
6707                    case Gravity.LEFT:
6708                        alignment = Layout.Alignment.ALIGN_LEFT;
6709                        break;
6710                    case Gravity.RIGHT:
6711                        alignment = Layout.Alignment.ALIGN_RIGHT;
6712                        break;
6713                    case Gravity.CENTER_HORIZONTAL:
6714                        alignment = Layout.Alignment.ALIGN_CENTER;
6715                        break;
6716                    default:
6717                        alignment = Layout.Alignment.ALIGN_NORMAL;
6718                        break;
6719                }
6720                break;
6721            case TEXT_ALIGNMENT_TEXT_START:
6722                alignment = Layout.Alignment.ALIGN_NORMAL;
6723                break;
6724            case TEXT_ALIGNMENT_TEXT_END:
6725                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6726                break;
6727            case TEXT_ALIGNMENT_CENTER:
6728                alignment = Layout.Alignment.ALIGN_CENTER;
6729                break;
6730            case TEXT_ALIGNMENT_VIEW_START:
6731                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6732                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6733                break;
6734            case TEXT_ALIGNMENT_VIEW_END:
6735                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6736                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6737                break;
6738            case TEXT_ALIGNMENT_INHERIT:
6739                // This should never happen as we have already resolved the text alignment
6740                // but better safe than sorry so we just fall through
6741            default:
6742                alignment = Layout.Alignment.ALIGN_NORMAL;
6743                break;
6744        }
6745        return alignment;
6746    }
6747
6748    /**
6749     * The width passed in is now the desired layout width,
6750     * not the full view width with padding.
6751     * {@hide}
6752     */
6753    protected void makeNewLayout(int wantWidth, int hintWidth,
6754                                 BoringLayout.Metrics boring,
6755                                 BoringLayout.Metrics hintBoring,
6756                                 int ellipsisWidth, boolean bringIntoView) {
6757        stopMarquee();
6758
6759        // Update "old" cached values
6760        mOldMaximum = mMaximum;
6761        mOldMaxMode = mMaxMode;
6762
6763        mHighlightPathBogus = true;
6764
6765        if (wantWidth < 0) {
6766            wantWidth = 0;
6767        }
6768        if (hintWidth < 0) {
6769            hintWidth = 0;
6770        }
6771
6772        Layout.Alignment alignment = getLayoutAlignment();
6773        final boolean testDirChange = mSingleLine && mLayout != null &&
6774            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6775             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6776        int oldDir = 0;
6777        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6778        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6779        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6780                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6781        TruncateAt effectiveEllipsize = mEllipsize;
6782        if (mEllipsize == TruncateAt.MARQUEE &&
6783                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6784            effectiveEllipsize = TruncateAt.END_SMALL;
6785        }
6786
6787        if (mTextDir == null) {
6788            mTextDir = getTextDirectionHeuristic();
6789        }
6790
6791        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6792                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6793        if (switchEllipsize) {
6794            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6795                    TruncateAt.END : TruncateAt.MARQUEE;
6796            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6797                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6798        }
6799
6800        shouldEllipsize = mEllipsize != null;
6801        mHintLayout = null;
6802
6803        if (mHint != null) {
6804            if (shouldEllipsize) hintWidth = wantWidth;
6805
6806            if (hintBoring == UNKNOWN_BORING) {
6807                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6808                                                   mHintBoring);
6809                if (hintBoring != null) {
6810                    mHintBoring = hintBoring;
6811                }
6812            }
6813
6814            if (hintBoring != null) {
6815                if (hintBoring.width <= hintWidth &&
6816                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6817                    if (mSavedHintLayout != null) {
6818                        mHintLayout = mSavedHintLayout.
6819                                replaceOrMake(mHint, mTextPaint,
6820                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6821                                hintBoring, mIncludePad);
6822                    } else {
6823                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6824                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6825                                hintBoring, mIncludePad);
6826                    }
6827
6828                    mSavedHintLayout = (BoringLayout) mHintLayout;
6829                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6830                    if (mSavedHintLayout != null) {
6831                        mHintLayout = mSavedHintLayout.
6832                                replaceOrMake(mHint, mTextPaint,
6833                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6834                                hintBoring, mIncludePad, mEllipsize,
6835                                ellipsisWidth);
6836                    } else {
6837                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6838                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6839                                hintBoring, mIncludePad, mEllipsize,
6840                                ellipsisWidth);
6841                    }
6842                }
6843            }
6844            // TODO: code duplication with makeSingleLayout()
6845            if (mHintLayout == null) {
6846                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6847                        mHint.length(), mTextPaint, hintWidth)
6848                        .setAlignment(alignment)
6849                        .setTextDirection(mTextDir)
6850                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6851                        .setIncludePad(mIncludePad)
6852                        .setBreakStrategy(mBreakStrategy)
6853                        .setHyphenationFrequency(mHyphenationFrequency)
6854                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6855                if (shouldEllipsize) {
6856                    builder.setEllipsize(mEllipsize)
6857                            .setEllipsizedWidth(ellipsisWidth);
6858                }
6859                mHintLayout = builder.build();
6860            }
6861        }
6862
6863        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6864            registerForPreDraw();
6865        }
6866
6867        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6868            if (!compressText(ellipsisWidth)) {
6869                final int height = mLayoutParams.height;
6870                // If the size of the view does not depend on the size of the text, try to
6871                // start the marquee immediately
6872                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6873                    startMarquee();
6874                } else {
6875                    // Defer the start of the marquee until we know our width (see setFrame())
6876                    mRestartMarquee = true;
6877                }
6878            }
6879        }
6880
6881        // CursorControllers need a non-null mLayout
6882        if (mEditor != null) mEditor.prepareCursorControllers();
6883    }
6884
6885    /**
6886     * @hide
6887     */
6888    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6889            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6890            boolean useSaved) {
6891        Layout result = null;
6892        if (mText instanceof Spannable) {
6893            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6894                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6895                    mBreakStrategy, mHyphenationFrequency,
6896                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6897        } else {
6898            if (boring == UNKNOWN_BORING) {
6899                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6900                if (boring != null) {
6901                    mBoring = boring;
6902                }
6903            }
6904
6905            if (boring != null) {
6906                if (boring.width <= wantWidth &&
6907                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6908                    if (useSaved && mSavedLayout != null) {
6909                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6910                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6911                                boring, mIncludePad);
6912                    } else {
6913                        result = BoringLayout.make(mTransformed, mTextPaint,
6914                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6915                                boring, mIncludePad);
6916                    }
6917
6918                    if (useSaved) {
6919                        mSavedLayout = (BoringLayout) result;
6920                    }
6921                } else if (shouldEllipsize && boring.width <= wantWidth) {
6922                    if (useSaved && mSavedLayout != null) {
6923                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6924                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6925                                boring, mIncludePad, effectiveEllipsize,
6926                                ellipsisWidth);
6927                    } else {
6928                        result = BoringLayout.make(mTransformed, mTextPaint,
6929                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6930                                boring, mIncludePad, effectiveEllipsize,
6931                                ellipsisWidth);
6932                    }
6933                }
6934            }
6935        }
6936        if (result == null) {
6937            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6938                    0, mTransformed.length(), mTextPaint, wantWidth)
6939                    .setAlignment(alignment)
6940                    .setTextDirection(mTextDir)
6941                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6942                    .setIncludePad(mIncludePad)
6943                    .setBreakStrategy(mBreakStrategy)
6944                    .setHyphenationFrequency(mHyphenationFrequency)
6945                    .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6946            if (shouldEllipsize) {
6947                builder.setEllipsize(effectiveEllipsize)
6948                        .setEllipsizedWidth(ellipsisWidth);
6949
6950            }
6951            // TODO: explore always setting maxLines
6952            result = builder.build();
6953        }
6954        return result;
6955    }
6956
6957    private boolean compressText(float width) {
6958        if (isHardwareAccelerated()) return false;
6959
6960        // Only compress the text if it hasn't been compressed by the previous pass
6961        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6962                mTextPaint.getTextScaleX() == 1.0f) {
6963            final float textWidth = mLayout.getLineWidth(0);
6964            final float overflow = (textWidth + 1.0f - width) / width;
6965            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6966                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6967                post(new Runnable() {
6968                    public void run() {
6969                        requestLayout();
6970                    }
6971                });
6972                return true;
6973            }
6974        }
6975
6976        return false;
6977    }
6978
6979    private static int desired(Layout layout) {
6980        int n = layout.getLineCount();
6981        CharSequence text = layout.getText();
6982        float max = 0;
6983
6984        // if any line was wrapped, we can't use it.
6985        // but it's ok for the last line not to have a newline
6986
6987        for (int i = 0; i < n - 1; i++) {
6988            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6989                return -1;
6990        }
6991
6992        for (int i = 0; i < n; i++) {
6993            max = Math.max(max, layout.getLineWidth(i));
6994        }
6995
6996        return (int) Math.ceil(max);
6997    }
6998
6999    /**
7000     * Set whether the TextView includes extra top and bottom padding to make
7001     * room for accents that go above the normal ascent and descent.
7002     * The default is true.
7003     *
7004     * @see #getIncludeFontPadding()
7005     *
7006     * @attr ref android.R.styleable#TextView_includeFontPadding
7007     */
7008    public void setIncludeFontPadding(boolean includepad) {
7009        if (mIncludePad != includepad) {
7010            mIncludePad = includepad;
7011
7012            if (mLayout != null) {
7013                nullLayouts();
7014                requestLayout();
7015                invalidate();
7016            }
7017        }
7018    }
7019
7020    /**
7021     * Gets whether the TextView includes extra top and bottom padding to make
7022     * room for accents that go above the normal ascent and descent.
7023     *
7024     * @see #setIncludeFontPadding(boolean)
7025     *
7026     * @attr ref android.R.styleable#TextView_includeFontPadding
7027     */
7028    public boolean getIncludeFontPadding() {
7029        return mIncludePad;
7030    }
7031
7032    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
7033
7034    @Override
7035    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
7036        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
7037        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
7038        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
7039        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
7040
7041        int width;
7042        int height;
7043
7044        BoringLayout.Metrics boring = UNKNOWN_BORING;
7045        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
7046
7047        if (mTextDir == null) {
7048            mTextDir = getTextDirectionHeuristic();
7049        }
7050
7051        int des = -1;
7052        boolean fromexisting = false;
7053
7054        if (widthMode == MeasureSpec.EXACTLY) {
7055            // Parent has told us how big to be. So be it.
7056            width = widthSize;
7057        } else {
7058            if (mLayout != null && mEllipsize == null) {
7059                des = desired(mLayout);
7060            }
7061
7062            if (des < 0) {
7063                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7064                if (boring != null) {
7065                    mBoring = boring;
7066                }
7067            } else {
7068                fromexisting = true;
7069            }
7070
7071            if (boring == null || boring == UNKNOWN_BORING) {
7072                if (des < 0) {
7073                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7074                }
7075                width = des;
7076            } else {
7077                width = boring.width;
7078            }
7079
7080            final Drawables dr = mDrawables;
7081            if (dr != null) {
7082                width = Math.max(width, dr.mDrawableWidthTop);
7083                width = Math.max(width, dr.mDrawableWidthBottom);
7084            }
7085
7086            if (mHint != null) {
7087                int hintDes = -1;
7088                int hintWidth;
7089
7090                if (mHintLayout != null && mEllipsize == null) {
7091                    hintDes = desired(mHintLayout);
7092                }
7093
7094                if (hintDes < 0) {
7095                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7096                    if (hintBoring != null) {
7097                        mHintBoring = hintBoring;
7098                    }
7099                }
7100
7101                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7102                    if (hintDes < 0) {
7103                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7104                    }
7105                    hintWidth = hintDes;
7106                } else {
7107                    hintWidth = hintBoring.width;
7108                }
7109
7110                if (hintWidth > width) {
7111                    width = hintWidth;
7112                }
7113            }
7114
7115            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7116
7117            if (mMaxWidthMode == EMS) {
7118                width = Math.min(width, mMaxWidth * getLineHeight());
7119            } else {
7120                width = Math.min(width, mMaxWidth);
7121            }
7122
7123            if (mMinWidthMode == EMS) {
7124                width = Math.max(width, mMinWidth * getLineHeight());
7125            } else {
7126                width = Math.max(width, mMinWidth);
7127            }
7128
7129            // Check against our minimum width
7130            width = Math.max(width, getSuggestedMinimumWidth());
7131
7132            if (widthMode == MeasureSpec.AT_MOST) {
7133                width = Math.min(widthSize, width);
7134            }
7135        }
7136
7137        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7138        int unpaddedWidth = want;
7139
7140        if (mHorizontallyScrolling) want = VERY_WIDE;
7141
7142        int hintWant = want;
7143        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7144
7145        if (mLayout == null) {
7146            makeNewLayout(want, hintWant, boring, hintBoring,
7147                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7148        } else {
7149            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7150                    (hintWidth != hintWant) ||
7151                    (mLayout.getEllipsizedWidth() !=
7152                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7153
7154            final boolean widthChanged = (mHint == null) &&
7155                    (mEllipsize == null) &&
7156                    (want > mLayout.getWidth()) &&
7157                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7158
7159            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7160
7161            if (layoutChanged || maximumChanged) {
7162                if (!maximumChanged && widthChanged) {
7163                    mLayout.increaseWidthTo(want);
7164                } else {
7165                    makeNewLayout(want, hintWant, boring, hintBoring,
7166                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7167                }
7168            } else {
7169                // Nothing has changed
7170            }
7171        }
7172
7173        if (heightMode == MeasureSpec.EXACTLY) {
7174            // Parent has told us how big to be. So be it.
7175            height = heightSize;
7176            mDesiredHeightAtMeasure = -1;
7177        } else {
7178            int desired = getDesiredHeight();
7179
7180            height = desired;
7181            mDesiredHeightAtMeasure = desired;
7182
7183            if (heightMode == MeasureSpec.AT_MOST) {
7184                height = Math.min(desired, heightSize);
7185            }
7186        }
7187
7188        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7189        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7190            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7191        }
7192
7193        /*
7194         * We didn't let makeNewLayout() register to bring the cursor into view,
7195         * so do it here if there is any possibility that it is needed.
7196         */
7197        if (mMovement != null ||
7198            mLayout.getWidth() > unpaddedWidth ||
7199            mLayout.getHeight() > unpaddedHeight) {
7200            registerForPreDraw();
7201        } else {
7202            scrollTo(0, 0);
7203        }
7204
7205        setMeasuredDimension(width, height);
7206    }
7207
7208    private int getDesiredHeight() {
7209        return Math.max(
7210                getDesiredHeight(mLayout, true),
7211                getDesiredHeight(mHintLayout, mEllipsize != null));
7212    }
7213
7214    private int getDesiredHeight(Layout layout, boolean cap) {
7215        if (layout == null) {
7216            return 0;
7217        }
7218
7219        int linecount = layout.getLineCount();
7220        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7221        int desired = layout.getLineTop(linecount);
7222
7223        final Drawables dr = mDrawables;
7224        if (dr != null) {
7225            desired = Math.max(desired, dr.mDrawableHeightLeft);
7226            desired = Math.max(desired, dr.mDrawableHeightRight);
7227        }
7228
7229        desired += pad;
7230
7231        if (mMaxMode == LINES) {
7232            /*
7233             * Don't cap the hint to a certain number of lines.
7234             * (Do cap it, though, if we have a maximum pixel height.)
7235             */
7236            if (cap) {
7237                if (linecount > mMaximum) {
7238                    desired = layout.getLineTop(mMaximum);
7239
7240                    if (dr != null) {
7241                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7242                        desired = Math.max(desired, dr.mDrawableHeightRight);
7243                    }
7244
7245                    desired += pad;
7246                    linecount = mMaximum;
7247                }
7248            }
7249        } else {
7250            desired = Math.min(desired, mMaximum);
7251        }
7252
7253        if (mMinMode == LINES) {
7254            if (linecount < mMinimum) {
7255                desired += getLineHeight() * (mMinimum - linecount);
7256            }
7257        } else {
7258            desired = Math.max(desired, mMinimum);
7259        }
7260
7261        // Check against our minimum height
7262        desired = Math.max(desired, getSuggestedMinimumHeight());
7263
7264        return desired;
7265    }
7266
7267    /**
7268     * Check whether a change to the existing text layout requires a
7269     * new view layout.
7270     */
7271    private void checkForResize() {
7272        boolean sizeChanged = false;
7273
7274        if (mLayout != null) {
7275            // Check if our width changed
7276            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7277                sizeChanged = true;
7278                invalidate();
7279            }
7280
7281            // Check if our height changed
7282            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7283                int desiredHeight = getDesiredHeight();
7284
7285                if (desiredHeight != this.getHeight()) {
7286                    sizeChanged = true;
7287                }
7288            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7289                if (mDesiredHeightAtMeasure >= 0) {
7290                    int desiredHeight = getDesiredHeight();
7291
7292                    if (desiredHeight != mDesiredHeightAtMeasure) {
7293                        sizeChanged = true;
7294                    }
7295                }
7296            }
7297        }
7298
7299        if (sizeChanged) {
7300            requestLayout();
7301            // caller will have already invalidated
7302        }
7303    }
7304
7305    /**
7306     * Check whether entirely new text requires a new view layout
7307     * or merely a new text layout.
7308     */
7309    private void checkForRelayout() {
7310        // If we have a fixed width, we can just swap in a new text layout
7311        // if the text height stays the same or if the view height is fixed.
7312
7313        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7314                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7315                (mHint == null || mHintLayout != null) &&
7316                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7317            // Static width, so try making a new text layout.
7318
7319            int oldht = mLayout.getHeight();
7320            int want = mLayout.getWidth();
7321            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7322
7323            /*
7324             * No need to bring the text into view, since the size is not
7325             * changing (unless we do the requestLayout(), in which case it
7326             * will happen at measure).
7327             */
7328            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7329                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7330                          false);
7331
7332            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7333                // In a fixed-height view, so use our new text layout.
7334                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7335                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7336                    invalidate();
7337                    return;
7338                }
7339
7340                // Dynamic height, but height has stayed the same,
7341                // so use our new text layout.
7342                if (mLayout.getHeight() == oldht &&
7343                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7344                    invalidate();
7345                    return;
7346                }
7347            }
7348
7349            // We lose: the height has changed and we have a dynamic height.
7350            // Request a new view layout using our new text layout.
7351            requestLayout();
7352            invalidate();
7353        } else {
7354            // Dynamic width, so we have no choice but to request a new
7355            // view layout with a new text layout.
7356            nullLayouts();
7357            requestLayout();
7358            invalidate();
7359        }
7360    }
7361
7362    @Override
7363    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7364        super.onLayout(changed, left, top, right, bottom);
7365        if (mDeferScroll >= 0) {
7366            int curs = mDeferScroll;
7367            mDeferScroll = -1;
7368            bringPointIntoView(Math.min(curs, mText.length()));
7369        }
7370    }
7371
7372    private boolean isShowingHint() {
7373        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7374    }
7375
7376    /**
7377     * Returns true if anything changed.
7378     */
7379    private boolean bringTextIntoView() {
7380        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7381        int line = 0;
7382        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7383            line = layout.getLineCount() - 1;
7384        }
7385
7386        Layout.Alignment a = layout.getParagraphAlignment(line);
7387        int dir = layout.getParagraphDirection(line);
7388        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7389        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7390        int ht = layout.getHeight();
7391
7392        int scrollx, scrolly;
7393
7394        // Convert to left, center, or right alignment.
7395        if (a == Layout.Alignment.ALIGN_NORMAL) {
7396            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7397                Layout.Alignment.ALIGN_RIGHT;
7398        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7399            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7400                Layout.Alignment.ALIGN_LEFT;
7401        }
7402
7403        if (a == Layout.Alignment.ALIGN_CENTER) {
7404            /*
7405             * Keep centered if possible, or, if it is too wide to fit,
7406             * keep leading edge in view.
7407             */
7408
7409            int left = (int) Math.floor(layout.getLineLeft(line));
7410            int right = (int) Math.ceil(layout.getLineRight(line));
7411
7412            if (right - left < hspace) {
7413                scrollx = (right + left) / 2 - hspace / 2;
7414            } else {
7415                if (dir < 0) {
7416                    scrollx = right - hspace;
7417                } else {
7418                    scrollx = left;
7419                }
7420            }
7421        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7422            int right = (int) Math.ceil(layout.getLineRight(line));
7423            scrollx = right - hspace;
7424        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7425            scrollx = (int) Math.floor(layout.getLineLeft(line));
7426        }
7427
7428        if (ht < vspace) {
7429            scrolly = 0;
7430        } else {
7431            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7432                scrolly = ht - vspace;
7433            } else {
7434                scrolly = 0;
7435            }
7436        }
7437
7438        if (scrollx != mScrollX || scrolly != mScrollY) {
7439            scrollTo(scrollx, scrolly);
7440            return true;
7441        } else {
7442            return false;
7443        }
7444    }
7445
7446    /**
7447     * Move the point, specified by the offset, into the view if it is needed.
7448     * This has to be called after layout. Returns true if anything changed.
7449     */
7450    public boolean bringPointIntoView(int offset) {
7451        if (isLayoutRequested()) {
7452            mDeferScroll = offset;
7453            return false;
7454        }
7455        boolean changed = false;
7456
7457        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7458
7459        if (layout == null) return changed;
7460
7461        int line = layout.getLineForOffset(offset);
7462
7463        int grav;
7464
7465        switch (layout.getParagraphAlignment(line)) {
7466            case ALIGN_LEFT:
7467                grav = 1;
7468                break;
7469            case ALIGN_RIGHT:
7470                grav = -1;
7471                break;
7472            case ALIGN_NORMAL:
7473                grav = layout.getParagraphDirection(line);
7474                break;
7475            case ALIGN_OPPOSITE:
7476                grav = -layout.getParagraphDirection(line);
7477                break;
7478            case ALIGN_CENTER:
7479            default:
7480                grav = 0;
7481                break;
7482        }
7483
7484        // We only want to clamp the cursor to fit within the layout width
7485        // in left-to-right modes, because in a right to left alignment,
7486        // we want to scroll to keep the line-right on the screen, as other
7487        // lines are likely to have text flush with the right margin, which
7488        // we want to keep visible.
7489        // A better long-term solution would probably be to measure both
7490        // the full line and a blank-trimmed version, and, for example, use
7491        // the latter measurement for centering and right alignment, but for
7492        // the time being we only implement the cursor clamping in left to
7493        // right where it is most likely to be annoying.
7494        final boolean clamped = grav > 0;
7495        // FIXME: Is it okay to truncate this, or should we round?
7496        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7497        final int top = layout.getLineTop(line);
7498        final int bottom = layout.getLineTop(line + 1);
7499
7500        int left = (int) Math.floor(layout.getLineLeft(line));
7501        int right = (int) Math.ceil(layout.getLineRight(line));
7502        int ht = layout.getHeight();
7503
7504        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7505        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7506        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7507            // If cursor has been clamped, make sure we don't scroll.
7508            right = Math.max(x, left + hspace);
7509        }
7510
7511        int hslack = (bottom - top) / 2;
7512        int vslack = hslack;
7513
7514        if (vslack > vspace / 4)
7515            vslack = vspace / 4;
7516        if (hslack > hspace / 4)
7517            hslack = hspace / 4;
7518
7519        int hs = mScrollX;
7520        int vs = mScrollY;
7521
7522        if (top - vs < vslack)
7523            vs = top - vslack;
7524        if (bottom - vs > vspace - vslack)
7525            vs = bottom - (vspace - vslack);
7526        if (ht - vs < vspace)
7527            vs = ht - vspace;
7528        if (0 - vs > 0)
7529            vs = 0;
7530
7531        if (grav != 0) {
7532            if (x - hs < hslack) {
7533                hs = x - hslack;
7534            }
7535            if (x - hs > hspace - hslack) {
7536                hs = x - (hspace - hslack);
7537            }
7538        }
7539
7540        if (grav < 0) {
7541            if (left - hs > 0)
7542                hs = left;
7543            if (right - hs < hspace)
7544                hs = right - hspace;
7545        } else if (grav > 0) {
7546            if (right - hs < hspace)
7547                hs = right - hspace;
7548            if (left - hs > 0)
7549                hs = left;
7550        } else /* grav == 0 */ {
7551            if (right - left <= hspace) {
7552                /*
7553                 * If the entire text fits, center it exactly.
7554                 */
7555                hs = left - (hspace - (right - left)) / 2;
7556            } else if (x > right - hslack) {
7557                /*
7558                 * If we are near the right edge, keep the right edge
7559                 * at the edge of the view.
7560                 */
7561                hs = right - hspace;
7562            } else if (x < left + hslack) {
7563                /*
7564                 * If we are near the left edge, keep the left edge
7565                 * at the edge of the view.
7566                 */
7567                hs = left;
7568            } else if (left > hs) {
7569                /*
7570                 * Is there whitespace visible at the left?  Fix it if so.
7571                 */
7572                hs = left;
7573            } else if (right < hs + hspace) {
7574                /*
7575                 * Is there whitespace visible at the right?  Fix it if so.
7576                 */
7577                hs = right - hspace;
7578            } else {
7579                /*
7580                 * Otherwise, float as needed.
7581                 */
7582                if (x - hs < hslack) {
7583                    hs = x - hslack;
7584                }
7585                if (x - hs > hspace - hslack) {
7586                    hs = x - (hspace - hslack);
7587                }
7588            }
7589        }
7590
7591        if (hs != mScrollX || vs != mScrollY) {
7592            if (mScroller == null) {
7593                scrollTo(hs, vs);
7594            } else {
7595                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7596                int dx = hs - mScrollX;
7597                int dy = vs - mScrollY;
7598
7599                if (duration > ANIMATED_SCROLL_GAP) {
7600                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7601                    awakenScrollBars(mScroller.getDuration());
7602                    invalidate();
7603                } else {
7604                    if (!mScroller.isFinished()) {
7605                        mScroller.abortAnimation();
7606                    }
7607
7608                    scrollBy(dx, dy);
7609                }
7610
7611                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7612            }
7613
7614            changed = true;
7615        }
7616
7617        if (isFocused()) {
7618            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7619            // requestRectangleOnScreen() is in terms of content coordinates.
7620
7621            // The offsets here are to ensure the rectangle we are using is
7622            // within our view bounds, in case the cursor is on the far left
7623            // or right.  If it isn't withing the bounds, then this request
7624            // will be ignored.
7625            if (mTempRect == null) mTempRect = new Rect();
7626            mTempRect.set(x - 2, top, x + 2, bottom);
7627            getInterestingRect(mTempRect, line);
7628            mTempRect.offset(mScrollX, mScrollY);
7629
7630            if (requestRectangleOnScreen(mTempRect)) {
7631                changed = true;
7632            }
7633        }
7634
7635        return changed;
7636    }
7637
7638    /**
7639     * Move the cursor, if needed, so that it is at an offset that is visible
7640     * to the user.  This will not move the cursor if it represents more than
7641     * one character (a selection range).  This will only work if the
7642     * TextView contains spannable text; otherwise it will do nothing.
7643     *
7644     * @return True if the cursor was actually moved, false otherwise.
7645     */
7646    public boolean moveCursorToVisibleOffset() {
7647        if (!(mText instanceof Spannable)) {
7648            return false;
7649        }
7650        int start = getSelectionStart();
7651        int end = getSelectionEnd();
7652        if (start != end) {
7653            return false;
7654        }
7655
7656        // First: make sure the line is visible on screen:
7657
7658        int line = mLayout.getLineForOffset(start);
7659
7660        final int top = mLayout.getLineTop(line);
7661        final int bottom = mLayout.getLineTop(line + 1);
7662        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7663        int vslack = (bottom - top) / 2;
7664        if (vslack > vspace / 4)
7665            vslack = vspace / 4;
7666        final int vs = mScrollY;
7667
7668        if (top < (vs+vslack)) {
7669            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7670        } else if (bottom > (vspace+vs-vslack)) {
7671            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7672        }
7673
7674        // Next: make sure the character is visible on screen:
7675
7676        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7677        final int hs = mScrollX;
7678        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7679        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7680
7681        // line might contain bidirectional text
7682        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7683        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7684
7685        int newStart = start;
7686        if (newStart < lowChar) {
7687            newStart = lowChar;
7688        } else if (newStart > highChar) {
7689            newStart = highChar;
7690        }
7691
7692        if (newStart != start) {
7693            Selection.setSelection((Spannable)mText, newStart);
7694            return true;
7695        }
7696
7697        return false;
7698    }
7699
7700    @Override
7701    public void computeScroll() {
7702        if (mScroller != null) {
7703            if (mScroller.computeScrollOffset()) {
7704                mScrollX = mScroller.getCurrX();
7705                mScrollY = mScroller.getCurrY();
7706                invalidateParentCaches();
7707                postInvalidate();  // So we draw again
7708            }
7709        }
7710    }
7711
7712    private void getInterestingRect(Rect r, int line) {
7713        convertFromViewportToContentCoordinates(r);
7714
7715        // Rectangle can can be expanded on first and last line to take
7716        // padding into account.
7717        // TODO Take left/right padding into account too?
7718        if (line == 0) r.top -= getExtendedPaddingTop();
7719        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7720    }
7721
7722    private void convertFromViewportToContentCoordinates(Rect r) {
7723        final int horizontalOffset = viewportToContentHorizontalOffset();
7724        r.left += horizontalOffset;
7725        r.right += horizontalOffset;
7726
7727        final int verticalOffset = viewportToContentVerticalOffset();
7728        r.top += verticalOffset;
7729        r.bottom += verticalOffset;
7730    }
7731
7732    int viewportToContentHorizontalOffset() {
7733        return getCompoundPaddingLeft() - mScrollX;
7734    }
7735
7736    int viewportToContentVerticalOffset() {
7737        int offset = getExtendedPaddingTop() - mScrollY;
7738        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7739            offset += getVerticalOffset(false);
7740        }
7741        return offset;
7742    }
7743
7744    @Override
7745    public void debug(int depth) {
7746        super.debug(depth);
7747
7748        String output = debugIndent(depth);
7749        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7750                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7751                + "} ";
7752
7753        if (mText != null) {
7754
7755            output += "mText=\"" + mText + "\" ";
7756            if (mLayout != null) {
7757                output += "mLayout width=" + mLayout.getWidth()
7758                        + " height=" + mLayout.getHeight();
7759            }
7760        } else {
7761            output += "mText=NULL";
7762        }
7763        Log.d(VIEW_LOG_TAG, output);
7764    }
7765
7766    /**
7767     * Convenience for {@link Selection#getSelectionStart}.
7768     */
7769    @ViewDebug.ExportedProperty(category = "text")
7770    public int getSelectionStart() {
7771        return Selection.getSelectionStart(getText());
7772    }
7773
7774    /**
7775     * Convenience for {@link Selection#getSelectionEnd}.
7776     */
7777    @ViewDebug.ExportedProperty(category = "text")
7778    public int getSelectionEnd() {
7779        return Selection.getSelectionEnd(getText());
7780    }
7781
7782    /**
7783     * Return true iff there is a selection inside this text view.
7784     */
7785    public boolean hasSelection() {
7786        final int selectionStart = getSelectionStart();
7787        final int selectionEnd = getSelectionEnd();
7788
7789        return selectionStart >= 0 && selectionStart != selectionEnd;
7790    }
7791
7792    String getSelectedText() {
7793        if (!hasSelection()) {
7794            return null;
7795        }
7796
7797        final int start = getSelectionStart();
7798        final int end = getSelectionEnd();
7799        return String.valueOf(
7800                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7801    }
7802
7803    /**
7804     * Sets the properties of this field (lines, horizontally scrolling,
7805     * transformation method) to be for a single-line input.
7806     *
7807     * @attr ref android.R.styleable#TextView_singleLine
7808     */
7809    public void setSingleLine() {
7810        setSingleLine(true);
7811    }
7812
7813    /**
7814     * Sets the properties of this field to transform input to ALL CAPS
7815     * display. This may use a "small caps" formatting if available.
7816     * This setting will be ignored if this field is editable or selectable.
7817     *
7818     * This call replaces the current transformation method. Disabling this
7819     * will not necessarily restore the previous behavior from before this
7820     * was enabled.
7821     *
7822     * @see #setTransformationMethod(TransformationMethod)
7823     * @attr ref android.R.styleable#TextView_textAllCaps
7824     */
7825    public void setAllCaps(boolean allCaps) {
7826        if (allCaps) {
7827            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7828        } else {
7829            setTransformationMethod(null);
7830        }
7831    }
7832
7833    /**
7834     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7835     * transformation method) to be for a single-line input; if false, restores these to the default
7836     * conditions.
7837     *
7838     * Note that the default conditions are not necessarily those that were in effect prior this
7839     * method, and you may want to reset these properties to your custom values.
7840     *
7841     * @attr ref android.R.styleable#TextView_singleLine
7842     */
7843    @android.view.RemotableViewMethod
7844    public void setSingleLine(boolean singleLine) {
7845        // Could be used, but may break backward compatibility.
7846        // if (mSingleLine == singleLine) return;
7847        setInputTypeSingleLine(singleLine);
7848        applySingleLine(singleLine, true, true);
7849    }
7850
7851    /**
7852     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7853     * @param singleLine
7854     */
7855    private void setInputTypeSingleLine(boolean singleLine) {
7856        if (mEditor != null &&
7857                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7858            if (singleLine) {
7859                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7860            } else {
7861                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7862            }
7863        }
7864    }
7865
7866    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7867            boolean changeMaxLines) {
7868        mSingleLine = singleLine;
7869        if (singleLine) {
7870            setLines(1);
7871            setHorizontallyScrolling(true);
7872            if (applyTransformation) {
7873                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7874            }
7875        } else {
7876            if (changeMaxLines) {
7877                setMaxLines(Integer.MAX_VALUE);
7878            }
7879            setHorizontallyScrolling(false);
7880            if (applyTransformation) {
7881                setTransformationMethod(null);
7882            }
7883        }
7884    }
7885
7886    /**
7887     * Causes words in the text that are longer than the view is wide
7888     * to be ellipsized instead of broken in the middle.  You may also
7889     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7890     * to constrain the text to a single line.  Use <code>null</code>
7891     * to turn off ellipsizing.
7892     *
7893     * If {@link #setMaxLines} has been used to set two or more lines,
7894     * only {@link android.text.TextUtils.TruncateAt#END} and
7895     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7896     * (other ellipsizing types will not do anything).
7897     *
7898     * @attr ref android.R.styleable#TextView_ellipsize
7899     */
7900    public void setEllipsize(TextUtils.TruncateAt where) {
7901        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7902        if (mEllipsize != where) {
7903            mEllipsize = where;
7904
7905            if (mLayout != null) {
7906                nullLayouts();
7907                requestLayout();
7908                invalidate();
7909            }
7910        }
7911    }
7912
7913    /**
7914     * Sets how many times to repeat the marquee animation. Only applied if the
7915     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7916     *
7917     * @see #getMarqueeRepeatLimit()
7918     *
7919     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7920     */
7921    public void setMarqueeRepeatLimit(int marqueeLimit) {
7922        mMarqueeRepeatLimit = marqueeLimit;
7923    }
7924
7925    /**
7926     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7927     * TextView has marquee enabled.
7928     *
7929     * @return the number of times the marquee animation is repeated. -1 if the animation
7930     * repeats indefinitely
7931     *
7932     * @see #setMarqueeRepeatLimit(int)
7933     *
7934     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7935     */
7936    public int getMarqueeRepeatLimit() {
7937        return mMarqueeRepeatLimit;
7938    }
7939
7940    /**
7941     * Returns where, if anywhere, words that are longer than the view
7942     * is wide should be ellipsized.
7943     */
7944    @ViewDebug.ExportedProperty
7945    public TextUtils.TruncateAt getEllipsize() {
7946        return mEllipsize;
7947    }
7948
7949    /**
7950     * Set the TextView so that when it takes focus, all the text is
7951     * selected.
7952     *
7953     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7954     */
7955    @android.view.RemotableViewMethod
7956    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7957        createEditorIfNeeded();
7958        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7959
7960        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7961            setText(mText, BufferType.SPANNABLE);
7962        }
7963    }
7964
7965    /**
7966     * Set whether the cursor is visible. The default is true. Note that this property only
7967     * makes sense for editable TextView.
7968     *
7969     * @see #isCursorVisible()
7970     *
7971     * @attr ref android.R.styleable#TextView_cursorVisible
7972     */
7973    @android.view.RemotableViewMethod
7974    public void setCursorVisible(boolean visible) {
7975        if (visible && mEditor == null) return; // visible is the default value with no edit data
7976        createEditorIfNeeded();
7977        if (mEditor.mCursorVisible != visible) {
7978            mEditor.mCursorVisible = visible;
7979            invalidate();
7980
7981            mEditor.makeBlink();
7982
7983            // InsertionPointCursorController depends on mCursorVisible
7984            mEditor.prepareCursorControllers();
7985        }
7986    }
7987
7988    /**
7989     * @return whether or not the cursor is visible (assuming this TextView is editable)
7990     *
7991     * @see #setCursorVisible(boolean)
7992     *
7993     * @attr ref android.R.styleable#TextView_cursorVisible
7994     */
7995    public boolean isCursorVisible() {
7996        // true is the default value
7997        return mEditor == null ? true : mEditor.mCursorVisible;
7998    }
7999
8000    private boolean canMarquee() {
8001        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
8002        return width > 0 && (mLayout.getLineWidth(0) > width ||
8003                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
8004                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
8005    }
8006
8007    private void startMarquee() {
8008        // Do not ellipsize EditText
8009        if (getKeyListener() != null) return;
8010
8011        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
8012            return;
8013        }
8014
8015        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
8016                getLineCount() == 1 && canMarquee()) {
8017
8018            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8019                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
8020                final Layout tmp = mLayout;
8021                mLayout = mSavedMarqueeModeLayout;
8022                mSavedMarqueeModeLayout = tmp;
8023                setHorizontalFadingEdgeEnabled(true);
8024                requestLayout();
8025                invalidate();
8026            }
8027
8028            if (mMarquee == null) mMarquee = new Marquee(this);
8029            mMarquee.start(mMarqueeRepeatLimit);
8030        }
8031    }
8032
8033    private void stopMarquee() {
8034        if (mMarquee != null && !mMarquee.isStopped()) {
8035            mMarquee.stop();
8036        }
8037
8038        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
8039            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8040            final Layout tmp = mSavedMarqueeModeLayout;
8041            mSavedMarqueeModeLayout = mLayout;
8042            mLayout = tmp;
8043            setHorizontalFadingEdgeEnabled(false);
8044            requestLayout();
8045            invalidate();
8046        }
8047    }
8048
8049    private void startStopMarquee(boolean start) {
8050        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8051            if (start) {
8052                startMarquee();
8053            } else {
8054                stopMarquee();
8055            }
8056        }
8057    }
8058
8059    /**
8060     * This method is called when the text is changed, in case any subclasses
8061     * would like to know.
8062     *
8063     * Within <code>text</code>, the <code>lengthAfter</code> characters
8064     * beginning at <code>start</code> have just replaced old text that had
8065     * length <code>lengthBefore</code>. It is an error to attempt to make
8066     * changes to <code>text</code> from this callback.
8067     *
8068     * @param text The text the TextView is displaying
8069     * @param start The offset of the start of the range of the text that was
8070     * modified
8071     * @param lengthBefore The length of the former text that has been replaced
8072     * @param lengthAfter The length of the replacement modified text
8073     */
8074    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8075        // intentionally empty, template pattern method can be overridden by subclasses
8076    }
8077
8078    /**
8079     * This method is called when the selection has changed, in case any
8080     * subclasses would like to know.
8081     *
8082     * @param selStart The new selection start location.
8083     * @param selEnd The new selection end location.
8084     */
8085    protected void onSelectionChanged(int selStart, int selEnd) {
8086        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8087    }
8088
8089    /**
8090     * Adds a TextWatcher to the list of those whose methods are called
8091     * whenever this TextView's text changes.
8092     * <p>
8093     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8094     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8095     * if there are any text changed listeners forces the buffer type to
8096     * Editable if it would not otherwise be and does call this method.
8097     */
8098    public void addTextChangedListener(TextWatcher watcher) {
8099        if (mListeners == null) {
8100            mListeners = new ArrayList<TextWatcher>();
8101        }
8102
8103        mListeners.add(watcher);
8104    }
8105
8106    /**
8107     * Removes the specified TextWatcher from the list of those whose
8108     * methods are called
8109     * whenever this TextView's text changes.
8110     */
8111    public void removeTextChangedListener(TextWatcher watcher) {
8112        if (mListeners != null) {
8113            int i = mListeners.indexOf(watcher);
8114
8115            if (i >= 0) {
8116                mListeners.remove(i);
8117            }
8118        }
8119    }
8120
8121    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8122        if (mListeners != null) {
8123            final ArrayList<TextWatcher> list = mListeners;
8124            final int count = list.size();
8125            for (int i = 0; i < count; i++) {
8126                list.get(i).beforeTextChanged(text, start, before, after);
8127            }
8128        }
8129
8130        // The spans that are inside or intersect the modified region no longer make sense
8131        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8132        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8133    }
8134
8135    // Removes all spans that are inside or actually overlap the start..end range
8136    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8137        if (!(mText instanceof Editable)) return;
8138        Editable text = (Editable) mText;
8139
8140        T[] spans = text.getSpans(start, end, type);
8141        final int length = spans.length;
8142        for (int i = 0; i < length; i++) {
8143            final int spanStart = text.getSpanStart(spans[i]);
8144            final int spanEnd = text.getSpanEnd(spans[i]);
8145            if (spanEnd == start || spanStart == end) break;
8146            text.removeSpan(spans[i]);
8147        }
8148    }
8149
8150    void removeAdjacentSuggestionSpans(final int pos) {
8151        if (!(mText instanceof Editable)) return;
8152        final Editable text = (Editable) mText;
8153
8154        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8155        final int length = spans.length;
8156        for (int i = 0; i < length; i++) {
8157            final int spanStart = text.getSpanStart(spans[i]);
8158            final int spanEnd = text.getSpanEnd(spans[i]);
8159            if (spanEnd == pos || spanStart == pos) {
8160                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8161                    text.removeSpan(spans[i]);
8162                }
8163            }
8164        }
8165    }
8166
8167    /**
8168     * Not private so it can be called from an inner class without going
8169     * through a thunk.
8170     */
8171    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8172        if (mListeners != null) {
8173            final ArrayList<TextWatcher> list = mListeners;
8174            final int count = list.size();
8175            for (int i = 0; i < count; i++) {
8176                list.get(i).onTextChanged(text, start, before, after);
8177            }
8178        }
8179
8180        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8181    }
8182
8183    /**
8184     * Not private so it can be called from an inner class without going
8185     * through a thunk.
8186     */
8187    void sendAfterTextChanged(Editable text) {
8188        if (mListeners != null) {
8189            final ArrayList<TextWatcher> list = mListeners;
8190            final int count = list.size();
8191            for (int i = 0; i < count; i++) {
8192                list.get(i).afterTextChanged(text);
8193            }
8194        }
8195        hideErrorIfUnchanged();
8196    }
8197
8198    void updateAfterEdit() {
8199        invalidate();
8200        int curs = getSelectionStart();
8201
8202        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8203            registerForPreDraw();
8204        }
8205
8206        checkForResize();
8207
8208        if (curs >= 0) {
8209            mHighlightPathBogus = true;
8210            if (mEditor != null) mEditor.makeBlink();
8211            bringPointIntoView(curs);
8212        }
8213    }
8214
8215    /**
8216     * Not private so it can be called from an inner class without going
8217     * through a thunk.
8218     */
8219    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8220        sLastCutCopyOrTextChangedTime = 0;
8221
8222        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8223        if (ims == null || ims.mBatchEditNesting == 0) {
8224            updateAfterEdit();
8225        }
8226        if (ims != null) {
8227            ims.mContentChanged = true;
8228            if (ims.mChangedStart < 0) {
8229                ims.mChangedStart = start;
8230                ims.mChangedEnd = start+before;
8231            } else {
8232                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8233                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8234            }
8235            ims.mChangedDelta += after-before;
8236        }
8237        resetErrorChangedFlag();
8238        sendOnTextChanged(buffer, start, before, after);
8239        onTextChanged(buffer, start, before, after);
8240    }
8241
8242    /**
8243     * Not private so it can be called from an inner class without going
8244     * through a thunk.
8245     */
8246    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8247        // XXX Make the start and end move together if this ends up
8248        // spending too much time invalidating.
8249
8250        boolean selChanged = false;
8251        int newSelStart=-1, newSelEnd=-1;
8252
8253        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8254
8255        if (what == Selection.SELECTION_END) {
8256            selChanged = true;
8257            newSelEnd = newStart;
8258
8259            if (oldStart >= 0 || newStart >= 0) {
8260                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8261                checkForResize();
8262                registerForPreDraw();
8263                if (mEditor != null) mEditor.makeBlink();
8264            }
8265        }
8266
8267        if (what == Selection.SELECTION_START) {
8268            selChanged = true;
8269            newSelStart = newStart;
8270
8271            if (oldStart >= 0 || newStart >= 0) {
8272                int end = Selection.getSelectionEnd(buf);
8273                invalidateCursor(end, oldStart, newStart);
8274            }
8275        }
8276
8277        if (selChanged) {
8278            mHighlightPathBogus = true;
8279            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8280
8281            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8282                if (newSelStart < 0) {
8283                    newSelStart = Selection.getSelectionStart(buf);
8284                }
8285                if (newSelEnd < 0) {
8286                    newSelEnd = Selection.getSelectionEnd(buf);
8287                }
8288
8289                if (newSelStart == newSelEnd && hasTransientState()) {
8290                    setHasTransientState(false);
8291                } else if (newSelStart != newSelEnd && !hasTransientState()) {
8292                    setHasTransientState(true);
8293                }
8294
8295                if (mEditor != null) {
8296                    mEditor.refreshTextActionMode();
8297                }
8298                onSelectionChanged(newSelStart, newSelEnd);
8299            }
8300        }
8301
8302        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8303                what instanceof CharacterStyle) {
8304            if (ims == null || ims.mBatchEditNesting == 0) {
8305                invalidate();
8306                mHighlightPathBogus = true;
8307                checkForResize();
8308            } else {
8309                ims.mContentChanged = true;
8310            }
8311            if (mEditor != null) {
8312                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8313                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8314            }
8315        }
8316
8317        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8318            mHighlightPathBogus = true;
8319            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8320                ims.mSelectionModeChanged = true;
8321            }
8322
8323            if (Selection.getSelectionStart(buf) >= 0) {
8324                if (ims == null || ims.mBatchEditNesting == 0) {
8325                    invalidateCursor();
8326                } else {
8327                    ims.mCursorChanged = true;
8328                }
8329            }
8330        }
8331
8332        if (what instanceof ParcelableSpan) {
8333            // If this is a span that can be sent to a remote process,
8334            // the current extract editor would be interested in it.
8335            if (ims != null && ims.mExtractedTextRequest != null) {
8336                if (ims.mBatchEditNesting != 0) {
8337                    if (oldStart >= 0) {
8338                        if (ims.mChangedStart > oldStart) {
8339                            ims.mChangedStart = oldStart;
8340                        }
8341                        if (ims.mChangedStart > oldEnd) {
8342                            ims.mChangedStart = oldEnd;
8343                        }
8344                    }
8345                    if (newStart >= 0) {
8346                        if (ims.mChangedStart > newStart) {
8347                            ims.mChangedStart = newStart;
8348                        }
8349                        if (ims.mChangedStart > newEnd) {
8350                            ims.mChangedStart = newEnd;
8351                        }
8352                    }
8353                } else {
8354                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8355                            + oldStart + "-" + oldEnd + ","
8356                            + newStart + "-" + newEnd + " " + what);
8357                    ims.mContentChanged = true;
8358                }
8359            }
8360        }
8361
8362        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8363                what instanceof SpellCheckSpan) {
8364            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8365        }
8366    }
8367
8368    /**
8369     * @hide
8370     */
8371    @Override
8372    public void dispatchFinishTemporaryDetach() {
8373        mDispatchTemporaryDetach = true;
8374        super.dispatchFinishTemporaryDetach();
8375        mDispatchTemporaryDetach = false;
8376    }
8377
8378    @Override
8379    public void onStartTemporaryDetach() {
8380        super.onStartTemporaryDetach();
8381        // Only track when onStartTemporaryDetach() is called directly,
8382        // usually because this instance is an editable field in a list
8383        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8384
8385        // Tell the editor that we are temporarily detached. It can use this to preserve
8386        // selection state as needed.
8387        if (mEditor != null) mEditor.mTemporaryDetach = true;
8388    }
8389
8390    @Override
8391    public void onFinishTemporaryDetach() {
8392        super.onFinishTemporaryDetach();
8393        // Only track when onStartTemporaryDetach() is called directly,
8394        // usually because this instance is an editable field in a list
8395        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8396        if (mEditor != null) mEditor.mTemporaryDetach = false;
8397    }
8398
8399    @Override
8400    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8401        if (mTemporaryDetach) {
8402            // If we are temporarily in the detach state, then do nothing.
8403            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8404            return;
8405        }
8406
8407        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8408
8409        if (focused) {
8410            if (mText instanceof Spannable) {
8411                Spannable sp = (Spannable) mText;
8412                MetaKeyKeyListener.resetMetaState(sp);
8413            }
8414        }
8415
8416        startStopMarquee(focused);
8417
8418        if (mTransformation != null) {
8419            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8420        }
8421
8422        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8423    }
8424
8425    @Override
8426    public void onWindowFocusChanged(boolean hasWindowFocus) {
8427        super.onWindowFocusChanged(hasWindowFocus);
8428
8429        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8430
8431        startStopMarquee(hasWindowFocus);
8432    }
8433
8434    @Override
8435    protected void onVisibilityChanged(View changedView, int visibility) {
8436        super.onVisibilityChanged(changedView, visibility);
8437        if (mEditor != null && visibility != VISIBLE) {
8438            mEditor.hideCursorAndSpanControllers();
8439            stopTextActionMode();
8440        }
8441    }
8442
8443    /**
8444     * Use {@link BaseInputConnection#removeComposingSpans
8445     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8446     * state from this text view.
8447     */
8448    public void clearComposingText() {
8449        if (mText instanceof Spannable) {
8450            BaseInputConnection.removeComposingSpans((Spannable)mText);
8451        }
8452    }
8453
8454    @Override
8455    public void setSelected(boolean selected) {
8456        boolean wasSelected = isSelected();
8457
8458        super.setSelected(selected);
8459
8460        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8461            if (selected) {
8462                startMarquee();
8463            } else {
8464                stopMarquee();
8465            }
8466        }
8467    }
8468
8469    @Override
8470    public boolean onTouchEvent(MotionEvent event) {
8471        final int action = event.getActionMasked();
8472        if (mEditor != null) {
8473            mEditor.onTouchEvent(event);
8474
8475            if (mEditor.mSelectionModifierCursorController != null &&
8476                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8477                return true;
8478            }
8479        }
8480
8481        final boolean superResult = super.onTouchEvent(event);
8482
8483        /*
8484         * Don't handle the release after a long press, because it will move the selection away from
8485         * whatever the menu action was trying to affect. If the long press should have triggered an
8486         * insertion action mode, we can now actually show it.
8487         */
8488        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8489            mEditor.mDiscardNextActionUp = false;
8490
8491            if (mEditor.mIsInsertionActionModeStartPending) {
8492                mEditor.startInsertionActionMode();
8493                mEditor.mIsInsertionActionModeStartPending = false;
8494            }
8495            return superResult;
8496        }
8497
8498        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8499                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8500
8501         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8502                && mText instanceof Spannable && mLayout != null) {
8503            boolean handled = false;
8504
8505            if (mMovement != null) {
8506                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8507            }
8508
8509            final boolean textIsSelectable = isTextSelectable();
8510            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8511                // The LinkMovementMethod which should handle taps on links has not been installed
8512                // on non editable text that support text selection.
8513                // We reproduce its behavior here to open links for these.
8514                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8515                        getSelectionEnd(), ClickableSpan.class);
8516
8517                if (links.length > 0) {
8518                    links[0].onClick(this);
8519                    handled = true;
8520                }
8521            }
8522
8523            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8524                // Show the IME, except when selecting in read-only text.
8525                final InputMethodManager imm = InputMethodManager.peekInstance();
8526                viewClicked(imm);
8527                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8528                    handled |= imm != null && imm.showSoftInput(this, 0);
8529                }
8530
8531                // The above condition ensures that the mEditor is not null
8532                mEditor.onTouchUpEvent(event);
8533
8534                handled = true;
8535            }
8536
8537            if (handled) {
8538                return true;
8539            }
8540        }
8541
8542        return superResult;
8543    }
8544
8545    @Override
8546    public boolean onGenericMotionEvent(MotionEvent event) {
8547        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8548            try {
8549                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8550                    return true;
8551                }
8552            } catch (AbstractMethodError ex) {
8553                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8554                // Ignore its absence in case third party applications implemented the
8555                // interface directly.
8556            }
8557        }
8558        return super.onGenericMotionEvent(event);
8559    }
8560
8561    @Override
8562    protected void onCreateContextMenu(ContextMenu menu) {
8563        if (mEditor != null) {
8564            mEditor.onCreateContextMenu(menu);
8565        }
8566    }
8567
8568    @Override
8569    public boolean showContextMenu() {
8570        if (mEditor != null) {
8571            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
8572        }
8573        return super.showContextMenu();
8574    }
8575
8576    @Override
8577    public boolean showContextMenu(float x, float y) {
8578        if (mEditor != null) {
8579            mEditor.setContextMenuAnchor(x, y);
8580        }
8581        return super.showContextMenu(x, y);
8582    }
8583
8584    /**
8585     * @return True iff this TextView contains a text that can be edited, or if this is
8586     * a selectable TextView.
8587     */
8588    boolean isTextEditable() {
8589        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8590    }
8591
8592    /**
8593     * Returns true, only while processing a touch gesture, if the initial
8594     * touch down event caused focus to move to the text view and as a result
8595     * its selection changed.  Only valid while processing the touch gesture
8596     * of interest, in an editable text view.
8597     */
8598    public boolean didTouchFocusSelect() {
8599        return mEditor != null && mEditor.mTouchFocusSelected;
8600    }
8601
8602    @Override
8603    public void cancelLongPress() {
8604        super.cancelLongPress();
8605        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8606    }
8607
8608    @Override
8609    public boolean onTrackballEvent(MotionEvent event) {
8610        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8611            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8612                return true;
8613            }
8614        }
8615
8616        return super.onTrackballEvent(event);
8617    }
8618
8619    public void setScroller(Scroller s) {
8620        mScroller = s;
8621    }
8622
8623    @Override
8624    protected float getLeftFadingEdgeStrength() {
8625        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8626                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8627            if (mMarquee != null && !mMarquee.isStopped()) {
8628                final Marquee marquee = mMarquee;
8629                if (marquee.shouldDrawLeftFade()) {
8630                    final float scroll = marquee.getScroll();
8631                    return scroll / getHorizontalFadingEdgeLength();
8632                } else {
8633                    return 0.0f;
8634                }
8635            } else if (getLineCount() == 1) {
8636                final int layoutDirection = getLayoutDirection();
8637                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8638                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8639                    case Gravity.LEFT:
8640                        return 0.0f;
8641                    case Gravity.RIGHT:
8642                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8643                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8644                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8645                    case Gravity.CENTER_HORIZONTAL:
8646                    case Gravity.FILL_HORIZONTAL:
8647                        final int textDirection = mLayout.getParagraphDirection(0);
8648                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8649                            return 0.0f;
8650                        } else {
8651                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8652                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8653                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8654                        }
8655                }
8656            }
8657        }
8658        return super.getLeftFadingEdgeStrength();
8659    }
8660
8661    @Override
8662    protected float getRightFadingEdgeStrength() {
8663        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8664                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8665            if (mMarquee != null && !mMarquee.isStopped()) {
8666                final Marquee marquee = mMarquee;
8667                final float maxFadeScroll = marquee.getMaxFadeScroll();
8668                final float scroll = marquee.getScroll();
8669                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8670            } else if (getLineCount() == 1) {
8671                final int layoutDirection = getLayoutDirection();
8672                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8673                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8674                    case Gravity.LEFT:
8675                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8676                                getCompoundPaddingRight();
8677                        final float lineWidth = mLayout.getLineWidth(0);
8678                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8679                    case Gravity.RIGHT:
8680                        return 0.0f;
8681                    case Gravity.CENTER_HORIZONTAL:
8682                    case Gravity.FILL_HORIZONTAL:
8683                        final int textDirection = mLayout.getParagraphDirection(0);
8684                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8685                            return 0.0f;
8686                        } else {
8687                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8688                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8689                                getHorizontalFadingEdgeLength();
8690                        }
8691                }
8692            }
8693        }
8694        return super.getRightFadingEdgeStrength();
8695    }
8696
8697    @Override
8698    protected int computeHorizontalScrollRange() {
8699        if (mLayout != null) {
8700            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8701                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8702        }
8703
8704        return super.computeHorizontalScrollRange();
8705    }
8706
8707    @Override
8708    protected int computeVerticalScrollRange() {
8709        if (mLayout != null)
8710            return mLayout.getHeight();
8711
8712        return super.computeVerticalScrollRange();
8713    }
8714
8715    @Override
8716    protected int computeVerticalScrollExtent() {
8717        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8718    }
8719
8720    @Override
8721    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8722        super.findViewsWithText(outViews, searched, flags);
8723        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8724                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8725            String searchedLowerCase = searched.toString().toLowerCase();
8726            String textLowerCase = mText.toString().toLowerCase();
8727            if (textLowerCase.contains(searchedLowerCase)) {
8728                outViews.add(this);
8729            }
8730        }
8731    }
8732
8733    public enum BufferType {
8734        NORMAL, SPANNABLE, EDITABLE,
8735    }
8736
8737    /**
8738     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8739     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8740     * if TextView_textColor was not set directly.
8741     *
8742     * @removed
8743     */
8744    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8745        if (attrs == null) {
8746            // Preserve behavior prior to removal of this API.
8747            throw new NullPointerException();
8748        }
8749
8750        // It's not safe to use this method from apps. The parameter 'attrs'
8751        // must have been obtained using the TextView filter array which is not
8752        // available to the SDK. As such, we grab a default TypedArray with the
8753        // right filter instead here.
8754        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8755        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8756        if (colors == null) {
8757            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8758            if (ap != 0) {
8759                final TypedArray appearance = context.obtainStyledAttributes(
8760                        ap, R.styleable.TextAppearance);
8761                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8762                appearance.recycle();
8763            }
8764        }
8765        a.recycle();
8766
8767        return colors;
8768    }
8769
8770    /**
8771     * Returns the default color from the TextView_textColor attribute from the
8772     * AttributeSet, if set, or the default color from the
8773     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8774     * TextView_textColor was not set directly.
8775     *
8776     * @removed
8777     */
8778    public static int getTextColor(Context context, TypedArray attrs, int def) {
8779        final ColorStateList colors = getTextColors(context, attrs);
8780        if (colors == null) {
8781            return def;
8782        } else {
8783            return colors.getDefaultColor();
8784        }
8785    }
8786
8787    @Override
8788    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8789        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8790            // Handle Ctrl-only shortcuts.
8791            switch (keyCode) {
8792            case KeyEvent.KEYCODE_A:
8793                if (canSelectText()) {
8794                    return onTextContextMenuItem(ID_SELECT_ALL);
8795                }
8796                break;
8797            case KeyEvent.KEYCODE_Z:
8798                if (canUndo()) {
8799                    return onTextContextMenuItem(ID_UNDO);
8800                }
8801                break;
8802            case KeyEvent.KEYCODE_X:
8803                if (canCut()) {
8804                    return onTextContextMenuItem(ID_CUT);
8805                }
8806                break;
8807            case KeyEvent.KEYCODE_C:
8808                if (canCopy()) {
8809                    return onTextContextMenuItem(ID_COPY);
8810                }
8811                break;
8812            case KeyEvent.KEYCODE_V:
8813                if (canPaste()) {
8814                    return onTextContextMenuItem(ID_PASTE);
8815                }
8816                break;
8817            }
8818        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8819            // Handle Ctrl-Shift shortcuts.
8820            switch (keyCode) {
8821                case KeyEvent.KEYCODE_Z:
8822                    if (canRedo()) {
8823                        return onTextContextMenuItem(ID_REDO);
8824                    }
8825                    break;
8826                case KeyEvent.KEYCODE_V:
8827                    if (canPaste()) {
8828                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8829                    }
8830            }
8831        }
8832        return super.onKeyShortcut(keyCode, event);
8833    }
8834
8835    /**
8836     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8837     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8838     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8839     * sufficient.
8840     */
8841    boolean canSelectText() {
8842        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8843    }
8844
8845    /**
8846     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8847     * The text must be spannable and the movement method must allow for arbitary selection.
8848     *
8849     * See also {@link #canSelectText()}.
8850     */
8851    boolean textCanBeSelected() {
8852        // prepareCursorController() relies on this method.
8853        // If you change this condition, make sure prepareCursorController is called anywhere
8854        // the value of this condition might be changed.
8855        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8856        return isTextEditable() ||
8857                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8858    }
8859
8860    private Locale getTextServicesLocale(boolean allowNullLocale) {
8861        // Start fetching the text services locale asynchronously.
8862        updateTextServicesLocaleAsync();
8863        // If !allowNullLocale and there is no cached text services locale, just return the default
8864        // locale.
8865        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8866                : mCurrentSpellCheckerLocaleCache;
8867    }
8868
8869    /**
8870     * This is a temporary method. Future versions may support multi-locale text.
8871     * Caveat: This method may not return the latest text services locale, but this should be
8872     * acceptable and it's more important to make this method asynchronous.
8873     *
8874     * @return The locale that should be used for a word iterator
8875     * in this TextView, based on the current spell checker settings,
8876     * the current IME's locale, or the system default locale.
8877     * Please note that a word iterator in this TextView is different from another word iterator
8878     * used by SpellChecker.java of TextView. This method should be used for the former.
8879     * @hide
8880     */
8881    // TODO: Support multi-locale
8882    // TODO: Update the text services locale immediately after the keyboard locale is switched
8883    // by catching intent of keyboard switch event
8884    public Locale getTextServicesLocale() {
8885        return getTextServicesLocale(false /* allowNullLocale */);
8886    }
8887
8888    /**
8889     * @return true if this TextView is specialized for showing and interacting with the extracted
8890     * text in a full-screen input method.
8891     * @hide
8892     */
8893    public boolean isInExtractedMode() {
8894        return false;
8895    }
8896
8897    /**
8898     * This is a temporary method. Future versions may support multi-locale text.
8899     * Caveat: This method may not return the latest spell checker locale, but this should be
8900     * acceptable and it's more important to make this method asynchronous.
8901     *
8902     * @return The locale that should be used for a spell checker in this TextView,
8903     * based on the current spell checker settings, the current IME's locale, or the system default
8904     * locale.
8905     * @hide
8906     */
8907    public Locale getSpellCheckerLocale() {
8908        return getTextServicesLocale(true /* allowNullLocale */);
8909    }
8910
8911    private void updateTextServicesLocaleAsync() {
8912        // AsyncTask.execute() uses a serial executor which means we don't have
8913        // to lock around updateTextServicesLocaleLocked() to prevent it from
8914        // being executed n times in parallel.
8915        AsyncTask.execute(new Runnable() {
8916            @Override
8917            public void run() {
8918                updateTextServicesLocaleLocked();
8919            }
8920        });
8921    }
8922
8923    private void updateTextServicesLocaleLocked() {
8924        final TextServicesManager textServicesManager = (TextServicesManager)
8925                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8926        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8927        final Locale locale;
8928        if (subtype != null) {
8929            locale = subtype.getLocaleObject();
8930        } else {
8931            locale = null;
8932        }
8933        mCurrentSpellCheckerLocaleCache = locale;
8934    }
8935
8936    void onLocaleChanged() {
8937        // Will be re-created on demand in getWordIterator with the proper new locale
8938        mEditor.mWordIterator = null;
8939    }
8940
8941    /**
8942     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8943     * Made available to achieve a consistent behavior.
8944     * @hide
8945     */
8946    public WordIterator getWordIterator() {
8947        if (mEditor != null) {
8948            return mEditor.getWordIterator();
8949        } else {
8950            return null;
8951        }
8952    }
8953
8954    /** @hide */
8955    @Override
8956    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8957        super.onPopulateAccessibilityEventInternal(event);
8958
8959        final CharSequence text = getTextForAccessibility();
8960        if (!TextUtils.isEmpty(text)) {
8961            event.getText().add(text);
8962        }
8963    }
8964
8965    /**
8966     * @return true if the user has explicitly allowed accessibility services
8967     * to speak passwords.
8968     */
8969    private boolean shouldSpeakPasswordsForAccessibility() {
8970        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8971                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8972                UserHandle.USER_CURRENT_OR_SELF) == 1);
8973    }
8974
8975    @Override
8976    public CharSequence getAccessibilityClassName() {
8977        return TextView.class.getName();
8978    }
8979
8980    @Override
8981    public void onProvideStructure(ViewStructure structure) {
8982        super.onProvideStructure(structure);
8983        final boolean isPassword = hasPasswordTransformationMethod()
8984                || isPasswordInputType(getInputType());
8985        if (!isPassword) {
8986            if (mLayout == null) {
8987                assumeLayout();
8988            }
8989            Layout layout = mLayout;
8990            final int lineCount = layout.getLineCount();
8991            if (lineCount <= 1) {
8992                // Simple case: this is a single line.
8993                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8994            } else {
8995                // Complex case: multi-line, could be scrolled or within a scroll container
8996                // so some lines are not visible.
8997                final int[] tmpCords = new int[2];
8998                getLocationInWindow(tmpCords);
8999                final int topWindowLocation = tmpCords[1];
9000                View root = this;
9001                ViewParent viewParent = getParent();
9002                while (viewParent instanceof View) {
9003                    root = (View) viewParent;
9004                    viewParent = root.getParent();
9005                }
9006                final int windowHeight = root.getHeight();
9007                final int topLine;
9008                final int bottomLine;
9009                if (topWindowLocation >= 0) {
9010                    // The top of the view is fully within its window; start text at line 0.
9011                    topLine = getLineAtCoordinateUnclamped(0);
9012                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
9013                } else {
9014                    // The top of hte window has scrolled off the top of the window; figure out
9015                    // the starting line for this.
9016                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
9017                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
9018                }
9019                // We want to return some contextual lines above/below the lines that are
9020                // actually visible.
9021                int expandedTopLine = topLine - (bottomLine-topLine)/2;
9022                if (expandedTopLine < 0) {
9023                    expandedTopLine = 0;
9024                }
9025                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
9026                if (expandedBottomLine >= lineCount) {
9027                    expandedBottomLine = lineCount-1;
9028                }
9029                // Convert lines into character offsets.
9030                int expandedTopChar = layout.getLineStart(expandedTopLine);
9031                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
9032                // Take into account selection -- if there is a selection, we need to expand
9033                // the text we are returning to include that selection.
9034                final int selStart = getSelectionStart();
9035                final int selEnd = getSelectionEnd();
9036                if (selStart < selEnd) {
9037                    if (selStart < expandedTopChar) {
9038                        expandedTopChar = selStart;
9039                    }
9040                    if (selEnd > expandedBottomChar) {
9041                        expandedBottomChar = selEnd;
9042                    }
9043                }
9044                // Get the text and trim it to the range we are reporting.
9045                CharSequence text = getText();
9046                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
9047                    text = text.subSequence(expandedTopChar, expandedBottomChar);
9048                }
9049                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
9050                final int[] lineOffsets = new int[bottomLine-topLine+1];
9051                final int[] lineBaselines = new int[bottomLine-topLine+1];
9052                final int baselineOffset = getBaselineOffset();
9053                for (int i=topLine; i<=bottomLine; i++) {
9054                    lineOffsets[i-topLine] = layout.getLineStart(i);
9055                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
9056                }
9057                structure.setTextLines(lineOffsets, lineBaselines);
9058            }
9059
9060            // Extract style information that applies to the TextView as a whole.
9061            int style = 0;
9062            int typefaceStyle = getTypefaceStyle();
9063            if ((typefaceStyle & Typeface.BOLD) != 0) {
9064                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9065            }
9066            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9067                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9068            }
9069
9070            // Global styles can also be set via TextView.setPaintFlags().
9071            int paintFlags = mTextPaint.getFlags();
9072            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9073                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9074            }
9075            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9076                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9077            }
9078            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9079                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9080            }
9081
9082            // TextView does not have its own text background color. A background is either part
9083            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9084            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9085                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9086        }
9087        structure.setHint(getHint());
9088    }
9089
9090    /** @hide */
9091    @Override
9092    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9093        super.onInitializeAccessibilityEventInternal(event);
9094
9095        final boolean isPassword = hasPasswordTransformationMethod();
9096        event.setPassword(isPassword);
9097
9098        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9099            event.setFromIndex(Selection.getSelectionStart(mText));
9100            event.setToIndex(Selection.getSelectionEnd(mText));
9101            event.setItemCount(mText.length());
9102        }
9103    }
9104
9105    /** @hide */
9106    @Override
9107    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9108        super.onInitializeAccessibilityNodeInfoInternal(info);
9109
9110        final boolean isPassword = hasPasswordTransformationMethod();
9111        info.setPassword(isPassword);
9112        info.setText(getTextForAccessibility());
9113
9114        if (mBufferType == BufferType.EDITABLE) {
9115            info.setEditable(true);
9116        }
9117
9118        if (mEditor != null) {
9119            info.setInputType(mEditor.mInputType);
9120
9121            if (mEditor.mError != null) {
9122                info.setContentInvalid(true);
9123                info.setError(mEditor.mError);
9124            }
9125        }
9126
9127        if (!TextUtils.isEmpty(mText)) {
9128            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9129            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9130            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9131                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9132                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9133                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9134                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9135            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9136        }
9137
9138        if (isFocused()) {
9139            if (canCopy()) {
9140                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9141            }
9142            if (canPaste()) {
9143                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9144            }
9145            if (canCut()) {
9146                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9147            }
9148            if (canShare()) {
9149                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9150                        ACCESSIBILITY_ACTION_SHARE,
9151                        getResources().getString(com.android.internal.R.string.share)));
9152            }
9153            if (canProcessText()) {  // also implies mEditor is not null.
9154                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9155            }
9156        }
9157
9158        // Check for known input filter types.
9159        final int numFilters = mFilters.length;
9160        for (int i = 0; i < numFilters; i++) {
9161            final InputFilter filter = mFilters[i];
9162            if (filter instanceof InputFilter.LengthFilter) {
9163                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9164            }
9165        }
9166
9167        if (!isSingleLine()) {
9168            info.setMultiLine(true);
9169        }
9170    }
9171
9172    /**
9173     * Performs an accessibility action after it has been offered to the
9174     * delegate.
9175     *
9176     * @hide
9177     */
9178    @Override
9179    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9180        if (mEditor != null
9181                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9182            return true;
9183        }
9184        switch (action) {
9185            case AccessibilityNodeInfo.ACTION_CLICK: {
9186                return performAccessibilityActionClick(arguments);
9187            }
9188            case AccessibilityNodeInfo.ACTION_COPY: {
9189                if (isFocused() && canCopy()) {
9190                    if (onTextContextMenuItem(ID_COPY)) {
9191                        return true;
9192                    }
9193                }
9194            } return false;
9195            case AccessibilityNodeInfo.ACTION_PASTE: {
9196                if (isFocused() && canPaste()) {
9197                    if (onTextContextMenuItem(ID_PASTE)) {
9198                        return true;
9199                    }
9200                }
9201            } return false;
9202            case AccessibilityNodeInfo.ACTION_CUT: {
9203                if (isFocused() && canCut()) {
9204                    if (onTextContextMenuItem(ID_CUT)) {
9205                        return true;
9206                    }
9207                }
9208            } return false;
9209            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9210                ensureIterableTextForAccessibilitySelectable();
9211                CharSequence text = getIterableTextForAccessibility();
9212                if (text == null) {
9213                    return false;
9214                }
9215                final int start = (arguments != null) ? arguments.getInt(
9216                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9217                final int end = (arguments != null) ? arguments.getInt(
9218                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9219                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9220                    // No arguments clears the selection.
9221                    if (start == end && end == -1) {
9222                        Selection.removeSelection((Spannable) text);
9223                        return true;
9224                    }
9225                    if (start >= 0 && start <= end && end <= text.length()) {
9226                        Selection.setSelection((Spannable) text, start, end);
9227                        return true;
9228                    }
9229                }
9230            } return false;
9231            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9232            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9233                ensureIterableTextForAccessibilitySelectable();
9234                return super.performAccessibilityActionInternal(action, arguments);
9235            }
9236            case ACCESSIBILITY_ACTION_SHARE: {
9237                if (isFocused() && canShare()) {
9238                    if (onTextContextMenuItem(ID_SHARE)) {
9239                        return true;
9240                    }
9241                }
9242            } return false;
9243            default: {
9244                return super.performAccessibilityActionInternal(action, arguments);
9245            }
9246        }
9247    }
9248
9249    private boolean performAccessibilityActionClick(Bundle arguments) {
9250        boolean handled = false;
9251        boolean processed = false;
9252
9253        if (!isEnabled()) {
9254            return false;
9255        }
9256
9257        if (arguments != null && arguments.containsKey(
9258                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT)) {
9259            int spanIndex = arguments.getInt(
9260                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT, -1);
9261            if (spanIndex >= 0 && hasSpannableText()) {
9262                ClickableSpan[] spans = ((Spannable) mText).getSpans(0,
9263                        mText.length(), ClickableSpan.class);
9264                if (spans != null && spans.length > spanIndex && spans[spanIndex] != null) {
9265                    // Simulate View.onTouchEvent for an ACTION_UP event
9266                    if (isFocusable() && !isFocused()) {
9267                        requestFocus();
9268                    }
9269                    spans[spanIndex].onClick(this);
9270                    handled = true;
9271                }
9272            }
9273            processed = true;
9274        }
9275
9276        if (!processed && arguments != null &&  arguments.containsKey(
9277                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT)) {
9278            int characterIndex = arguments.getInt(
9279                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT, -1);
9280            if (characterIndex >= 0 && hasSpannableText()) {
9281                ClickableSpan[] spans = ((Spannable) mText).getSpans(characterIndex,
9282                        characterIndex, ClickableSpan.class);
9283                // click only on the first span to keep parity with onTouch() implementation
9284                if (spans != null && spans.length > 0 && spans[0] != null) {
9285                    // Simulate View.onTouchEvent for an ACTION_UP event
9286                    if (isFocusable() && !isFocused()) {
9287                        requestFocus();
9288                    }
9289                    spans[0].onClick(this);
9290                    handled = true;
9291                }
9292            }
9293            processed = true;
9294        }
9295
9296        if (!processed && (isClickable() || isLongClickable())) {
9297            // Simulate View.onTouchEvent for an ACTION_UP event
9298            if (isFocusable() && !isFocused()) {
9299                requestFocus();
9300            }
9301
9302            performClick();
9303            handled = true;
9304        }
9305
9306        // Show the IME, except when selecting in read-only text.
9307        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9308                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9309            final InputMethodManager imm = InputMethodManager.peekInstance();
9310            viewClicked(imm);
9311            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9312                handled |= imm.showSoftInput(this, 0);
9313            }
9314        }
9315
9316        return handled;
9317    }
9318
9319    private boolean hasSpannableText() {
9320        return mText != null && mText instanceof Spannable;
9321    }
9322
9323    /** @hide */
9324    @Override
9325    public void sendAccessibilityEventInternal(int eventType) {
9326        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9327            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9328        }
9329
9330        // Do not send scroll events since first they are not interesting for
9331        // accessibility and second such events a generated too frequently.
9332        // For details see the implementation of bringTextIntoView().
9333        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9334            return;
9335        }
9336        super.sendAccessibilityEventInternal(eventType);
9337    }
9338
9339    /**
9340     * Returns the text that should be exposed to accessibility services.
9341     * <p>
9342     * This approximates what is displayed visually. If the user has specified
9343     * that accessibility services should speak passwords, this method will
9344     * bypass any password transformation method and return unobscured text.
9345     *
9346     * @return the text that should be exposed to accessibility services, may
9347     *         be {@code null} if no text is set
9348     */
9349    @Nullable
9350    private CharSequence getTextForAccessibility() {
9351        // If the text is empty, we must be showing the hint text.
9352        if (TextUtils.isEmpty(mText)) {
9353            return mHint;
9354        }
9355
9356        // Check whether we need to bypass the transformation
9357        // method and expose unobscured text.
9358        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9359            return mText;
9360        }
9361
9362        // Otherwise, speak whatever text is being displayed.
9363        return mTransformed;
9364    }
9365
9366    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9367            int fromIndex, int removedCount, int addedCount) {
9368        AccessibilityEvent event =
9369                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9370        event.setFromIndex(fromIndex);
9371        event.setRemovedCount(removedCount);
9372        event.setAddedCount(addedCount);
9373        event.setBeforeText(beforeText);
9374        sendAccessibilityEventUnchecked(event);
9375    }
9376
9377    /**
9378     * Returns whether this text view is a current input method target.  The
9379     * default implementation just checks with {@link InputMethodManager}.
9380     */
9381    public boolean isInputMethodTarget() {
9382        InputMethodManager imm = InputMethodManager.peekInstance();
9383        return imm != null && imm.isActive(this);
9384    }
9385
9386    static final int ID_SELECT_ALL = android.R.id.selectAll;
9387    static final int ID_UNDO = android.R.id.undo;
9388    static final int ID_REDO = android.R.id.redo;
9389    static final int ID_CUT = android.R.id.cut;
9390    static final int ID_COPY = android.R.id.copy;
9391    static final int ID_PASTE = android.R.id.paste;
9392    static final int ID_SHARE = android.R.id.shareText;
9393    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9394    static final int ID_REPLACE = android.R.id.replaceText;
9395
9396    /**
9397     * Called when a context menu option for the text view is selected.  Currently
9398     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9399     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9400     *
9401     * @return true if the context menu item action was performed.
9402     */
9403    public boolean onTextContextMenuItem(int id) {
9404        int min = 0;
9405        int max = mText.length();
9406
9407        if (isFocused()) {
9408            final int selStart = getSelectionStart();
9409            final int selEnd = getSelectionEnd();
9410
9411            min = Math.max(0, Math.min(selStart, selEnd));
9412            max = Math.max(0, Math.max(selStart, selEnd));
9413        }
9414
9415        switch (id) {
9416            case ID_SELECT_ALL:
9417                selectAllText();
9418                return true;
9419
9420            case ID_UNDO:
9421                if (mEditor != null) {
9422                    mEditor.undo();
9423                }
9424                return true;  // Returns true even if nothing was undone.
9425
9426            case ID_REDO:
9427                if (mEditor != null) {
9428                    mEditor.redo();
9429                }
9430                return true;  // Returns true even if nothing was undone.
9431
9432            case ID_PASTE:
9433                paste(min, max, true /* withFormatting */);
9434                return true;
9435
9436            case ID_PASTE_AS_PLAIN_TEXT:
9437                paste(min, max, false /* withFormatting */);
9438                return true;
9439
9440            case ID_CUT:
9441                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9442                deleteText_internal(min, max);
9443                return true;
9444
9445            case ID_COPY:
9446                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9447                stopTextActionMode();
9448                return true;
9449
9450            case ID_REPLACE:
9451                if (mEditor != null) {
9452                    mEditor.replace();
9453                }
9454                return true;
9455
9456            case ID_SHARE:
9457                shareSelectedText();
9458                return true;
9459        }
9460        return false;
9461    }
9462
9463    CharSequence getTransformedText(int start, int end) {
9464        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9465    }
9466
9467    @Override
9468    public boolean performLongClick() {
9469        boolean handled = false;
9470
9471        if (mEditor != null) {
9472            mEditor.mIsBeingLongClicked = true;
9473        }
9474
9475        if (super.performLongClick()) {
9476            handled = true;
9477        }
9478
9479        if (mEditor != null) {
9480            handled |= mEditor.performLongClick(handled);
9481            mEditor.mIsBeingLongClicked = false;
9482        }
9483
9484        if (handled) {
9485            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9486            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9487        }
9488
9489        return handled;
9490    }
9491
9492    @Override
9493    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9494        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9495        if (mEditor != null) {
9496            mEditor.onScrollChanged();
9497        }
9498    }
9499
9500    /**
9501     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9502     * by the IME or by the spell checker as the user types. This is done by adding
9503     * {@link SuggestionSpan}s to the text.
9504     *
9505     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9506     * user asks for them on these parts of the text. This value depends on the inputType of this
9507     * TextView.
9508     *
9509     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9510     *
9511     * In addition, the type variation must be one of
9512     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9513     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9514     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9515     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9516     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9517     *
9518     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9519     *
9520     * @return true if the suggestions popup window is enabled, based on the inputType.
9521     */
9522    public boolean isSuggestionsEnabled() {
9523        if (mEditor == null) return false;
9524        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9525            return false;
9526        }
9527        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9528
9529        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9530        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9531                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9532                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9533                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9534                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9535    }
9536
9537    /**
9538     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9539     * selection is initiated in this View.
9540     *
9541     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9542     * Paste, Replace and Share actions, depending on what this View supports.
9543     *
9544     * <p>A custom implementation can add new entries in the default menu in its
9545     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9546     * method. The default actions can also be removed from the menu using
9547     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9548     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9549     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9550     *
9551     * <p>Returning false from
9552     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9553     * will prevent the action mode from being started.
9554     *
9555     * <p>Action click events should be handled by the custom implementation of
9556     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9557     * android.view.MenuItem)}.
9558     *
9559     * <p>Note that text selection mode is not started when a TextView receives focus and the
9560     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9561     * that case, to allow for quick replacement.
9562     */
9563    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9564        createEditorIfNeeded();
9565        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9566    }
9567
9568    /**
9569     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9570     *
9571     * @return The current custom selection callback.
9572     */
9573    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9574        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9575    }
9576
9577    /**
9578     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9579     * insertion is initiated in this View.
9580     * The standard implementation populates the menu with a subset of Select All,
9581     * Paste and Replace actions, depending on what this View supports.
9582     *
9583     * <p>A custom implementation can add new entries in the default menu in its
9584     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9585     * android.view.Menu)} method. The default actions can also be removed from the menu using
9586     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9587     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9588     *
9589     * <p>Returning false from
9590     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9591     * android.view.Menu)} will prevent the action mode from being started.</p>
9592     *
9593     * <p>Action click events should be handled by the custom implementation of
9594     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9595     * android.view.MenuItem)}.</p>
9596     *
9597     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9598     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9599     */
9600    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9601        createEditorIfNeeded();
9602        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9603    }
9604
9605    /**
9606     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9607     *
9608     * @return The current custom insertion callback.
9609     */
9610    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9611        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9612    }
9613
9614    /**
9615     * @hide
9616     */
9617    protected void stopTextActionMode() {
9618        if (mEditor != null) {
9619            mEditor.stopTextActionMode();
9620        }
9621    }
9622
9623    boolean canUndo() {
9624        return mEditor != null && mEditor.canUndo();
9625    }
9626
9627    boolean canRedo() {
9628        return mEditor != null && mEditor.canRedo();
9629    }
9630
9631    boolean canCut() {
9632        if (hasPasswordTransformationMethod()) {
9633            return false;
9634        }
9635
9636        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9637                mEditor.mKeyListener != null) {
9638            return true;
9639        }
9640
9641        return false;
9642    }
9643
9644    boolean canCopy() {
9645        if (hasPasswordTransformationMethod()) {
9646            return false;
9647        }
9648
9649        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9650            return true;
9651        }
9652
9653        return false;
9654    }
9655
9656    boolean canShare() {
9657        return canCopy() && isDeviceProvisioned();
9658    }
9659
9660    boolean isDeviceProvisioned() {
9661        if (mDeviceProvisionedState == DEVICE_PROVISIONED_UNKNOWN) {
9662            mDeviceProvisionedState = Settings.Global.getInt(
9663                    mContext.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0
9664                    ? DEVICE_PROVISIONED_YES
9665                    : DEVICE_PROVISIONED_NO;
9666        }
9667        return mDeviceProvisionedState == DEVICE_PROVISIONED_YES;
9668    }
9669
9670    boolean canPaste() {
9671        return (mText instanceof Editable &&
9672                mEditor != null && mEditor.mKeyListener != null &&
9673                getSelectionStart() >= 0 &&
9674                getSelectionEnd() >= 0 &&
9675                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9676                hasPrimaryClip());
9677    }
9678
9679    boolean canProcessText() {
9680        if (!getContext().canStartActivityForResult() || getId() == View.NO_ID
9681                || hasPasswordTransformationMethod()) {
9682            return false;
9683        }
9684
9685        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9686            return true;
9687        }
9688
9689        return false;
9690    }
9691
9692    boolean canSelectAllText() {
9693        return canSelectText() && !hasPasswordTransformationMethod()
9694                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9695    }
9696
9697    boolean selectAllText() {
9698        final int length = mText.length();
9699        Selection.setSelection((Spannable) mText, 0, length);
9700        return length > 0;
9701    }
9702
9703    void replaceSelectionWithText(CharSequence text) {
9704        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9705    }
9706
9707    /**
9708     * Paste clipboard content between min and max positions.
9709     */
9710    private void paste(int min, int max, boolean withFormatting) {
9711        ClipboardManager clipboard =
9712            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9713        ClipData clip = clipboard.getPrimaryClip();
9714        if (clip != null) {
9715            boolean didFirst = false;
9716            for (int i=0; i<clip.getItemCount(); i++) {
9717                final CharSequence paste;
9718                if (withFormatting) {
9719                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9720                } else {
9721                    // Get an item as text and remove all spans by toString().
9722                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9723                    paste = (text instanceof Spanned) ? text.toString() : text;
9724                }
9725                if (paste != null) {
9726                    if (!didFirst) {
9727                        Selection.setSelection((Spannable) mText, max);
9728                        ((Editable) mText).replace(min, max, paste);
9729                        didFirst = true;
9730                    } else {
9731                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9732                        ((Editable) mText).insert(getSelectionEnd(), paste);
9733                    }
9734                }
9735            }
9736            sLastCutCopyOrTextChangedTime = 0;
9737        }
9738    }
9739
9740    private void shareSelectedText() {
9741        String selectedText = getSelectedText();
9742        if (selectedText != null && !selectedText.isEmpty()) {
9743            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9744            sharingIntent.setType("text/plain");
9745            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9746            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9747            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9748            Selection.setSelection((Spannable) mText, getSelectionEnd());
9749        }
9750    }
9751
9752    private void setPrimaryClip(ClipData clip) {
9753        ClipboardManager clipboard = (ClipboardManager) getContext().
9754                getSystemService(Context.CLIPBOARD_SERVICE);
9755        clipboard.setPrimaryClip(clip);
9756        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9757    }
9758
9759    /**
9760     * Get the character offset closest to the specified absolute position. A typical use case is to
9761     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9762     *
9763     * @param x The horizontal absolute position of a point on screen
9764     * @param y The vertical absolute position of a point on screen
9765     * @return the character offset for the character whose position is closest to the specified
9766     *  position. Returns -1 if there is no layout.
9767     */
9768    public int getOffsetForPosition(float x, float y) {
9769        if (getLayout() == null) return -1;
9770        final int line = getLineAtCoordinate(y);
9771        final int offset = getOffsetAtCoordinate(line, x);
9772        return offset;
9773    }
9774
9775    float convertToLocalHorizontalCoordinate(float x) {
9776        x -= getTotalPaddingLeft();
9777        // Clamp the position to inside of the view.
9778        x = Math.max(0.0f, x);
9779        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9780        x += getScrollX();
9781        return x;
9782    }
9783
9784    int getLineAtCoordinate(float y) {
9785        y -= getTotalPaddingTop();
9786        // Clamp the position to inside of the view.
9787        y = Math.max(0.0f, y);
9788        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9789        y += getScrollY();
9790        return getLayout().getLineForVertical((int) y);
9791    }
9792
9793    int getLineAtCoordinateUnclamped(float y) {
9794        y -= getTotalPaddingTop();
9795        y += getScrollY();
9796        return getLayout().getLineForVertical((int) y);
9797    }
9798
9799    int getOffsetAtCoordinate(int line, float x) {
9800        x = convertToLocalHorizontalCoordinate(x);
9801        return getLayout().getOffsetForHorizontal(line, x);
9802    }
9803
9804    @Override
9805    public boolean onDragEvent(DragEvent event) {
9806        switch (event.getAction()) {
9807            case DragEvent.ACTION_DRAG_STARTED:
9808                return mEditor != null && mEditor.hasInsertionController();
9809
9810            case DragEvent.ACTION_DRAG_ENTERED:
9811                TextView.this.requestFocus();
9812                return true;
9813
9814            case DragEvent.ACTION_DRAG_LOCATION:
9815                final int offset = getOffsetForPosition(event.getX(), event.getY());
9816                Selection.setSelection((Spannable)mText, offset);
9817                return true;
9818
9819            case DragEvent.ACTION_DROP:
9820                if (mEditor != null) mEditor.onDrop(event);
9821                return true;
9822
9823            case DragEvent.ACTION_DRAG_ENDED:
9824            case DragEvent.ACTION_DRAG_EXITED:
9825            default:
9826                return true;
9827        }
9828    }
9829
9830    boolean isInBatchEditMode() {
9831        if (mEditor == null) return false;
9832        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9833        if (ims != null) {
9834            return ims.mBatchEditNesting > 0;
9835        }
9836        return mEditor.mInBatchEditControllers;
9837    }
9838
9839    @Override
9840    public void onRtlPropertiesChanged(int layoutDirection) {
9841        super.onRtlPropertiesChanged(layoutDirection);
9842
9843        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9844        if (mTextDir != newTextDir) {
9845            mTextDir = newTextDir;
9846            if (mLayout != null) {
9847                checkForRelayout();
9848            }
9849        }
9850    }
9851
9852    /**
9853     * @hide
9854     */
9855    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9856        if (hasPasswordTransformationMethod()) {
9857            // passwords fields should be LTR
9858            return TextDirectionHeuristics.LTR;
9859        }
9860
9861        // Always need to resolve layout direction first
9862        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9863
9864        // Now, we can select the heuristic
9865        switch (getTextDirection()) {
9866            default:
9867            case TEXT_DIRECTION_FIRST_STRONG:
9868                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9869                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9870            case TEXT_DIRECTION_ANY_RTL:
9871                return TextDirectionHeuristics.ANYRTL_LTR;
9872            case TEXT_DIRECTION_LTR:
9873                return TextDirectionHeuristics.LTR;
9874            case TEXT_DIRECTION_RTL:
9875                return TextDirectionHeuristics.RTL;
9876            case TEXT_DIRECTION_LOCALE:
9877                return TextDirectionHeuristics.LOCALE;
9878            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9879                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9880            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9881                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9882        }
9883    }
9884
9885    /**
9886     * @hide
9887     */
9888    @Override
9889    public void onResolveDrawables(int layoutDirection) {
9890        // No need to resolve twice
9891        if (mLastLayoutDirection == layoutDirection) {
9892            return;
9893        }
9894        mLastLayoutDirection = layoutDirection;
9895
9896        // Resolve drawables
9897        if (mDrawables != null) {
9898            if (mDrawables.resolveWithLayoutDirection(layoutDirection)) {
9899                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.LEFT]);
9900                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.RIGHT]);
9901                applyCompoundDrawableTint();
9902            }
9903        }
9904    }
9905
9906    /**
9907     * Prepares a drawable for display by propagating layout direction and
9908     * drawable state.
9909     *
9910     * @param dr the drawable to prepare
9911     */
9912    private void prepareDrawableForDisplay(@Nullable Drawable dr) {
9913        if (dr == null) {
9914            return;
9915        }
9916
9917        dr.setLayoutDirection(getLayoutDirection());
9918
9919        if (dr.isStateful()) {
9920            dr.setState(getDrawableState());
9921            dr.jumpToCurrentState();
9922        }
9923    }
9924
9925    /**
9926     * @hide
9927     */
9928    protected void resetResolvedDrawables() {
9929        super.resetResolvedDrawables();
9930        mLastLayoutDirection = -1;
9931    }
9932
9933    /**
9934     * @hide
9935     */
9936    protected void viewClicked(InputMethodManager imm) {
9937        if (imm != null) {
9938            imm.viewClicked(this);
9939        }
9940    }
9941
9942    /**
9943     * Deletes the range of text [start, end[.
9944     * @hide
9945     */
9946    protected void deleteText_internal(int start, int end) {
9947        ((Editable) mText).delete(start, end);
9948    }
9949
9950    /**
9951     * Replaces the range of text [start, end[ by replacement text
9952     * @hide
9953     */
9954    protected void replaceText_internal(int start, int end, CharSequence text) {
9955        ((Editable) mText).replace(start, end, text);
9956    }
9957
9958    /**
9959     * Sets a span on the specified range of text
9960     * @hide
9961     */
9962    protected void setSpan_internal(Object span, int start, int end, int flags) {
9963        ((Editable) mText).setSpan(span, start, end, flags);
9964    }
9965
9966    /**
9967     * Moves the cursor to the specified offset position in text
9968     * @hide
9969     */
9970    protected void setCursorPosition_internal(int start, int end) {
9971        Selection.setSelection(((Editable) mText), start, end);
9972    }
9973
9974    /**
9975     * An Editor should be created as soon as any of the editable-specific fields (grouped
9976     * inside the Editor object) is assigned to a non-default value.
9977     * This method will create the Editor if needed.
9978     *
9979     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9980     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9981     * Editor for backward compatibility, as soon as one of these fields is assigned.
9982     *
9983     * Also note that for performance reasons, the mEditor is created when needed, but not
9984     * reset when no more edit-specific fields are needed.
9985     */
9986    private void createEditorIfNeeded() {
9987        if (mEditor == null) {
9988            mEditor = new Editor(this);
9989        }
9990    }
9991
9992    /**
9993     * @hide
9994     */
9995    @Override
9996    public CharSequence getIterableTextForAccessibility() {
9997        return mText;
9998    }
9999
10000    private void ensureIterableTextForAccessibilitySelectable() {
10001        if (!(mText instanceof Spannable)) {
10002            setText(mText, BufferType.SPANNABLE);
10003        }
10004    }
10005
10006    /**
10007     * @hide
10008     */
10009    @Override
10010    public TextSegmentIterator getIteratorForGranularity(int granularity) {
10011        switch (granularity) {
10012            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
10013                Spannable text = (Spannable) getIterableTextForAccessibility();
10014                if (!TextUtils.isEmpty(text) && getLayout() != null) {
10015                    AccessibilityIterators.LineTextSegmentIterator iterator =
10016                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
10017                    iterator.initialize(text, getLayout());
10018                    return iterator;
10019                }
10020            } break;
10021            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
10022                Spannable text = (Spannable) getIterableTextForAccessibility();
10023                if (!TextUtils.isEmpty(text) && getLayout() != null) {
10024                    AccessibilityIterators.PageTextSegmentIterator iterator =
10025                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
10026                    iterator.initialize(this);
10027                    return iterator;
10028                }
10029            } break;
10030        }
10031        return super.getIteratorForGranularity(granularity);
10032    }
10033
10034    /**
10035     * @hide
10036     */
10037    @Override
10038    public int getAccessibilitySelectionStart() {
10039        return getSelectionStart();
10040    }
10041
10042    /**
10043     * @hide
10044     */
10045    public boolean isAccessibilitySelectionExtendable() {
10046        return true;
10047    }
10048
10049    /**
10050     * @hide
10051     */
10052    @Override
10053    public int getAccessibilitySelectionEnd() {
10054        return getSelectionEnd();
10055    }
10056
10057    /**
10058     * @hide
10059     */
10060    @Override
10061    public void setAccessibilitySelection(int start, int end) {
10062        if (getAccessibilitySelectionStart() == start
10063                && getAccessibilitySelectionEnd() == end) {
10064            return;
10065        }
10066        CharSequence text = getIterableTextForAccessibility();
10067        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
10068            Selection.setSelection((Spannable) text, start, end);
10069        } else {
10070            Selection.removeSelection((Spannable) text);
10071        }
10072        // Hide all selection controllers used for adjusting selection
10073        // since we are doing so explicitlty by other means and these
10074        // controllers interact with how selection behaves.
10075        if (mEditor != null) {
10076            mEditor.hideCursorAndSpanControllers();
10077            mEditor.stopTextActionMode();
10078        }
10079    }
10080
10081    /** @hide */
10082    @Override
10083    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10084        super.encodeProperties(stream);
10085
10086        TruncateAt ellipsize = getEllipsize();
10087        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10088        stream.addProperty("text:textSize", getTextSize());
10089        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10090        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10091        stream.addProperty("text:selectionStart", getSelectionStart());
10092        stream.addProperty("text:selectionEnd", getSelectionEnd());
10093        stream.addProperty("text:curTextColor", mCurTextColor);
10094        stream.addProperty("text:text", mText == null ? null : mText.toString());
10095        stream.addProperty("text:gravity", mGravity);
10096    }
10097
10098    /**
10099     * User interface state that is stored by TextView for implementing
10100     * {@link View#onSaveInstanceState}.
10101     */
10102    public static class SavedState extends BaseSavedState {
10103        int selStart = -1;
10104        int selEnd = -1;
10105        CharSequence text;
10106        boolean frozenWithFocus;
10107        CharSequence error;
10108        ParcelableParcel editorState;  // Optional state from Editor.
10109
10110        SavedState(Parcelable superState) {
10111            super(superState);
10112        }
10113
10114        @Override
10115        public void writeToParcel(Parcel out, int flags) {
10116            super.writeToParcel(out, flags);
10117            out.writeInt(selStart);
10118            out.writeInt(selEnd);
10119            out.writeInt(frozenWithFocus ? 1 : 0);
10120            TextUtils.writeToParcel(text, out, flags);
10121
10122            if (error == null) {
10123                out.writeInt(0);
10124            } else {
10125                out.writeInt(1);
10126                TextUtils.writeToParcel(error, out, flags);
10127            }
10128
10129            if (editorState == null) {
10130                out.writeInt(0);
10131            } else {
10132                out.writeInt(1);
10133                editorState.writeToParcel(out, flags);
10134            }
10135        }
10136
10137        @Override
10138        public String toString() {
10139            String str = "TextView.SavedState{"
10140                    + Integer.toHexString(System.identityHashCode(this))
10141                    + " start=" + selStart + " end=" + selEnd;
10142            if (text != null) {
10143                str += " text=" + text;
10144            }
10145            return str + "}";
10146        }
10147
10148        @SuppressWarnings("hiding")
10149        public static final Parcelable.Creator<SavedState> CREATOR
10150                = new Parcelable.Creator<SavedState>() {
10151            public SavedState createFromParcel(Parcel in) {
10152                return new SavedState(in);
10153            }
10154
10155            public SavedState[] newArray(int size) {
10156                return new SavedState[size];
10157            }
10158        };
10159
10160        private SavedState(Parcel in) {
10161            super(in);
10162            selStart = in.readInt();
10163            selEnd = in.readInt();
10164            frozenWithFocus = (in.readInt() != 0);
10165            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10166
10167            if (in.readInt() != 0) {
10168                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10169            }
10170
10171            if (in.readInt() != 0) {
10172                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10173            }
10174        }
10175    }
10176
10177    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10178        private char[] mChars;
10179        private int mStart, mLength;
10180
10181        public CharWrapper(char[] chars, int start, int len) {
10182            mChars = chars;
10183            mStart = start;
10184            mLength = len;
10185        }
10186
10187        /* package */ void set(char[] chars, int start, int len) {
10188            mChars = chars;
10189            mStart = start;
10190            mLength = len;
10191        }
10192
10193        public int length() {
10194            return mLength;
10195        }
10196
10197        public char charAt(int off) {
10198            return mChars[off + mStart];
10199        }
10200
10201        @Override
10202        public String toString() {
10203            return new String(mChars, mStart, mLength);
10204        }
10205
10206        public CharSequence subSequence(int start, int end) {
10207            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10208                throw new IndexOutOfBoundsException(start + ", " + end);
10209            }
10210
10211            return new String(mChars, start + mStart, end - start);
10212        }
10213
10214        public void getChars(int start, int end, char[] buf, int off) {
10215            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10216                throw new IndexOutOfBoundsException(start + ", " + end);
10217            }
10218
10219            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10220        }
10221
10222        public void drawText(Canvas c, int start, int end,
10223                             float x, float y, Paint p) {
10224            c.drawText(mChars, start + mStart, end - start, x, y, p);
10225        }
10226
10227        public void drawTextRun(Canvas c, int start, int end,
10228                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10229            int count = end - start;
10230            int contextCount = contextEnd - contextStart;
10231            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10232                    contextCount, x, y, isRtl, p);
10233        }
10234
10235        public float measureText(int start, int end, Paint p) {
10236            return p.measureText(mChars, start + mStart, end - start);
10237        }
10238
10239        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10240            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10241        }
10242
10243        public float getTextRunAdvances(int start, int end, int contextStart,
10244                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10245                Paint p) {
10246            int count = end - start;
10247            int contextCount = contextEnd - contextStart;
10248            return p.getTextRunAdvances(mChars, start + mStart, count,
10249                    contextStart + mStart, contextCount, isRtl, advances,
10250                    advancesIndex);
10251        }
10252
10253        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10254                int offset, int cursorOpt, Paint p) {
10255            int contextCount = contextEnd - contextStart;
10256            return p.getTextRunCursor(mChars, contextStart + mStart,
10257                    contextCount, dir, offset + mStart, cursorOpt);
10258        }
10259    }
10260
10261    private static final class Marquee {
10262        // TODO: Add an option to configure this
10263        private static final float MARQUEE_DELTA_MAX = 0.07f;
10264        private static final int MARQUEE_DELAY = 1200;
10265        private static final int MARQUEE_DP_PER_SECOND = 30;
10266
10267        private static final byte MARQUEE_STOPPED = 0x0;
10268        private static final byte MARQUEE_STARTING = 0x1;
10269        private static final byte MARQUEE_RUNNING = 0x2;
10270
10271        private final WeakReference<TextView> mView;
10272        private final Choreographer mChoreographer;
10273
10274        private byte mStatus = MARQUEE_STOPPED;
10275        private final float mPixelsPerSecond;
10276        private float mMaxScroll;
10277        private float mMaxFadeScroll;
10278        private float mGhostStart;
10279        private float mGhostOffset;
10280        private float mFadeStop;
10281        private int mRepeatLimit;
10282
10283        private float mScroll;
10284        private long mLastAnimationMs;
10285
10286        Marquee(TextView v) {
10287            final float density = v.getContext().getResources().getDisplayMetrics().density;
10288            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10289            mView = new WeakReference<TextView>(v);
10290            mChoreographer = Choreographer.getInstance();
10291        }
10292
10293        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10294            @Override
10295            public void doFrame(long frameTimeNanos) {
10296                tick();
10297            }
10298        };
10299
10300        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10301            @Override
10302            public void doFrame(long frameTimeNanos) {
10303                mStatus = MARQUEE_RUNNING;
10304                mLastAnimationMs = mChoreographer.getFrameTime();
10305                tick();
10306            }
10307        };
10308
10309        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10310            @Override
10311            public void doFrame(long frameTimeNanos) {
10312                if (mStatus == MARQUEE_RUNNING) {
10313                    if (mRepeatLimit >= 0) {
10314                        mRepeatLimit--;
10315                    }
10316                    start(mRepeatLimit);
10317                }
10318            }
10319        };
10320
10321        void tick() {
10322            if (mStatus != MARQUEE_RUNNING) {
10323                return;
10324            }
10325
10326            mChoreographer.removeFrameCallback(mTickCallback);
10327
10328            final TextView textView = mView.get();
10329            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10330                long currentMs = mChoreographer.getFrameTime();
10331                long deltaMs = currentMs - mLastAnimationMs;
10332                mLastAnimationMs = currentMs;
10333                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10334                mScroll += deltaPx;
10335                if (mScroll > mMaxScroll) {
10336                    mScroll = mMaxScroll;
10337                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10338                } else {
10339                    mChoreographer.postFrameCallback(mTickCallback);
10340                }
10341                textView.invalidate();
10342            }
10343        }
10344
10345        void stop() {
10346            mStatus = MARQUEE_STOPPED;
10347            mChoreographer.removeFrameCallback(mStartCallback);
10348            mChoreographer.removeFrameCallback(mRestartCallback);
10349            mChoreographer.removeFrameCallback(mTickCallback);
10350            resetScroll();
10351        }
10352
10353        private void resetScroll() {
10354            mScroll = 0.0f;
10355            final TextView textView = mView.get();
10356            if (textView != null) textView.invalidate();
10357        }
10358
10359        void start(int repeatLimit) {
10360            if (repeatLimit == 0) {
10361                stop();
10362                return;
10363            }
10364            mRepeatLimit = repeatLimit;
10365            final TextView textView = mView.get();
10366            if (textView != null && textView.mLayout != null) {
10367                mStatus = MARQUEE_STARTING;
10368                mScroll = 0.0f;
10369                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10370                        textView.getCompoundPaddingRight();
10371                final float lineWidth = textView.mLayout.getLineWidth(0);
10372                final float gap = textWidth / 3.0f;
10373                mGhostStart = lineWidth - textWidth + gap;
10374                mMaxScroll = mGhostStart + textWidth;
10375                mGhostOffset = lineWidth + gap;
10376                mFadeStop = lineWidth + textWidth / 6.0f;
10377                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10378
10379                textView.invalidate();
10380                mChoreographer.postFrameCallback(mStartCallback);
10381            }
10382        }
10383
10384        float getGhostOffset() {
10385            return mGhostOffset;
10386        }
10387
10388        float getScroll() {
10389            return mScroll;
10390        }
10391
10392        float getMaxFadeScroll() {
10393            return mMaxFadeScroll;
10394        }
10395
10396        boolean shouldDrawLeftFade() {
10397            return mScroll <= mFadeStop;
10398        }
10399
10400        boolean shouldDrawGhost() {
10401            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10402        }
10403
10404        boolean isRunning() {
10405            return mStatus == MARQUEE_RUNNING;
10406        }
10407
10408        boolean isStopped() {
10409            return mStatus == MARQUEE_STOPPED;
10410        }
10411    }
10412
10413    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10414
10415        private CharSequence mBeforeText;
10416
10417        public void beforeTextChanged(CharSequence buffer, int start,
10418                                      int before, int after) {
10419            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10420                    + " before=" + before + " after=" + after + ": " + buffer);
10421
10422            if (AccessibilityManager.getInstance(mContext).isEnabled()
10423                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10424                            || shouldSpeakPasswordsForAccessibility())) {
10425                mBeforeText = buffer.toString();
10426            }
10427
10428            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10429        }
10430
10431        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10432            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10433                    + " before=" + before + " after=" + after + ": " + buffer);
10434            TextView.this.handleTextChanged(buffer, start, before, after);
10435
10436            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10437                    (isFocused() || isSelected() && isShown())) {
10438                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10439                mBeforeText = null;
10440            }
10441        }
10442
10443        public void afterTextChanged(Editable buffer) {
10444            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10445            TextView.this.sendAfterTextChanged(buffer);
10446
10447            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10448                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10449            }
10450        }
10451
10452        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10453            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10454                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10455            TextView.this.spanChange(buf, what, s, st, e, en);
10456        }
10457
10458        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10459            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10460                    + " what=" + what + ": " + buf);
10461            TextView.this.spanChange(buf, what, -1, s, -1, e);
10462        }
10463
10464        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10465            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10466                    + " what=" + what + ": " + buf);
10467            TextView.this.spanChange(buf, what, s, -1, e, -1);
10468        }
10469    }
10470}
10471