/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget;

import android.R;
import android.content.ClipData;
import android.content.ClipData.Item;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.content.res.XmlResourceParser;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.inputmethodservice.ExtractEditText;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import android.provider.Settings;
import android.text.BoringLayout;
import android.text.DynamicLayout;
import android.text.Editable;
import android.text.GetChars;
import android.text.GraphicsOperations;
import android.text.InputFilter;
import android.text.InputType;
import android.text.Layout;
import android.text.ParcelableSpan;
import android.text.Selection;
import android.text.SpanWatcher;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.SpannedString;
import android.text.StaticLayout;
import android.text.TextDirectionHeuristic;
import android.text.TextDirectionHeuristics;
import android.text.TextPaint;
import android.text.TextUtils;
import android.text.TextUtils.TruncateAt;
import android.text.TextWatcher;
import android.text.method.AllCapsTransformationMethod;
import android.text.method.ArrowKeyMovementMethod;
import android.text.method.DateKeyListener;
import android.text.method.DateTimeKeyListener;
import android.text.method.DialerKeyListener;
import android.text.method.DigitsKeyListener;
import android.text.method.KeyListener;
import android.text.method.LinkMovementMethod;
import android.text.method.MetaKeyKeyListener;
import android.text.method.MovementMethod;
import android.text.method.PasswordTransformationMethod;
import android.text.method.SingleLineTransformationMethod;
import android.text.method.TextKeyListener;
import android.text.method.TimeKeyListener;
import android.text.method.TransformationMethod;
import android.text.method.TransformationMethod2;
import android.text.method.WordIterator;
import android.text.style.ClickableSpan;
import android.text.style.EasyEditSpan;
import android.text.style.ParagraphStyle;
import android.text.style.SpellCheckSpan;
import android.text.style.SuggestionRangeSpan;
import android.text.style.SuggestionSpan;
import android.text.style.TextAppearanceSpan;
import android.text.style.URLSpan;
import android.text.style.UpdateAppearance;
import android.text.util.Linkify;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.FloatMath;
import android.util.Log;
import android.util.TypedValue;
import android.view.ActionMode;
import android.view.ActionMode.Callback;
import android.view.ContextMenu;
import android.view.DragEvent;
import android.view.Gravity;
import android.view.HapticFeedbackConstants;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewDebug;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewParent;
import android.view.ViewRootImpl;
import android.view.ViewTreeObserver;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.animation.AnimationUtils;
import android.view.inputmethod.BaseInputConnection;
import android.view.inputmethod.CompletionInfo;
import android.view.inputmethod.CorrectionInfo;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.ExtractedText;
import android.view.inputmethod.ExtractedTextRequest;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.RemoteViews.RemoteView;

import com.android.internal.util.FastMath;
import com.android.internal.widget.EditableInputConnection;

import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;
import java.lang.ref.WeakReference;
import java.text.BreakIterator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;

/**
 * Displays text to the user and optionally allows them to edit it.  A TextView
 * is a complete text editor, however the basic class is configured to not
 * allow editing; see {@link EditText} for a subclass that configures the text
 * view for editing.
 *
 * <p>
 * <b>XML attributes</b>
 * <p>
 * See {@link android.R.styleable#TextView TextView Attributes},
 * {@link android.R.styleable#View View Attributes}
 *
 * @attr ref android.R.styleable#TextView_text
 * @attr ref android.R.styleable#TextView_bufferType
 * @attr ref android.R.styleable#TextView_hint
 * @attr ref android.R.styleable#TextView_textColor
 * @attr ref android.R.styleable#TextView_textColorHighlight
 * @attr ref android.R.styleable#TextView_textColorHint
 * @attr ref android.R.styleable#TextView_textAppearance
 * @attr ref android.R.styleable#TextView_textColorLink
 * @attr ref android.R.styleable#TextView_textSize
 * @attr ref android.R.styleable#TextView_textScaleX
 * @attr ref android.R.styleable#TextView_typeface
 * @attr ref android.R.styleable#TextView_textStyle
 * @attr ref android.R.styleable#TextView_cursorVisible
 * @attr ref android.R.styleable#TextView_maxLines
 * @attr ref android.R.styleable#TextView_maxHeight
 * @attr ref android.R.styleable#TextView_lines
 * @attr ref android.R.styleable#TextView_height
 * @attr ref android.R.styleable#TextView_minLines
 * @attr ref android.R.styleable#TextView_minHeight
 * @attr ref android.R.styleable#TextView_maxEms
 * @attr ref android.R.styleable#TextView_maxWidth
 * @attr ref android.R.styleable#TextView_ems
 * @attr ref android.R.styleable#TextView_width
 * @attr ref android.R.styleable#TextView_minEms
 * @attr ref android.R.styleable#TextView_minWidth
 * @attr ref android.R.styleable#TextView_gravity
 * @attr ref android.R.styleable#TextView_scrollHorizontally
 * @attr ref android.R.styleable#TextView_password
 * @attr ref android.R.styleable#TextView_singleLine
 * @attr ref android.R.styleable#TextView_selectAllOnFocus
 * @attr ref android.R.styleable#TextView_includeFontPadding
 * @attr ref android.R.styleable#TextView_maxLength
 * @attr ref android.R.styleable#TextView_shadowColor
 * @attr ref android.R.styleable#TextView_shadowDx
 * @attr ref android.R.styleable#TextView_shadowDy
 * @attr ref android.R.styleable#TextView_shadowRadius
 * @attr ref android.R.styleable#TextView_autoLink
 * @attr ref android.R.styleable#TextView_linksClickable
 * @attr ref android.R.styleable#TextView_numeric
 * @attr ref android.R.styleable#TextView_digits
 * @attr ref android.R.styleable#TextView_phoneNumber
 * @attr ref android.R.styleable#TextView_inputMethod
 * @attr ref android.R.styleable#TextView_capitalize
 * @attr ref android.R.styleable#TextView_autoText
 * @attr ref android.R.styleable#TextView_editable
 * @attr ref android.R.styleable#TextView_freezesText
 * @attr ref android.R.styleable#TextView_ellipsize
 * @attr ref android.R.styleable#TextView_drawableTop
 * @attr ref android.R.styleable#TextView_drawableBottom
 * @attr ref android.R.styleable#TextView_drawableRight
 * @attr ref android.R.styleable#TextView_drawableLeft
 * @attr ref android.R.styleable#TextView_drawablePadding
 * @attr ref android.R.styleable#TextView_lineSpacingExtra
 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
 * @attr ref android.R.styleable#TextView_inputType
 * @attr ref android.R.styleable#TextView_imeOptions
 * @attr ref android.R.styleable#TextView_privateImeOptions
 * @attr ref android.R.styleable#TextView_imeActionLabel
 * @attr ref android.R.styleable#TextView_imeActionId
 * @attr ref android.R.styleable#TextView_editorExtras
 */
@RemoteView
public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
    static final String LOG_TAG = "TextView";
    static final boolean DEBUG_EXTRACT = false;

    private static final int PRIORITY = 100;
    private int mCurrentAlpha = 255;

    final int[] mTempCoords = new int[2];
    Rect mTempRect;

    private ColorStateList mTextColor;
    private int mCurTextColor;
    private ColorStateList mHintTextColor;
    private ColorStateList mLinkTextColor;
    private int mCurHintTextColor;
    private boolean mFreezesText;
    private boolean mFrozenWithFocus;
    private boolean mTemporaryDetach;
    private boolean mDispatchTemporaryDetach;

    private boolean mDiscardNextActionUp = false;
    private boolean mIgnoreActionUpEvent = false;

    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();

    private float mShadowRadius, mShadowDx, mShadowDy;

    private static final int PREDRAW_NOT_REGISTERED = 0;
    private static final int PREDRAW_PENDING = 1;
    private static final int PREDRAW_DONE = 2;
    private int mPreDrawState = PREDRAW_NOT_REGISTERED;

    private TextUtils.TruncateAt mEllipsize = null;

    // Enum for the "typeface" XML parameter.
    // TODO: How can we get this from the XML instead of hardcoding it here?
    private static final int SANS = 1;
    private static final int SERIF = 2;
    private static final int MONOSPACE = 3;

    // Bitfield for the "numeric" XML parameter.
    // TODO: How can we get this from the XML instead of hardcoding it here?
    private static final int SIGNED = 2;
    private static final int DECIMAL = 4;

    class Drawables {
        final Rect mCompoundRect = new Rect();
        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
                mDrawableStart, mDrawableEnd;
        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
                mDrawableSizeStart, mDrawableSizeEnd;
        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
                mDrawableHeightStart, mDrawableHeightEnd;
        int mDrawablePadding;
    }
    private Drawables mDrawables;

    private CharSequence mError;
    private boolean mErrorWasChanged;
    private ErrorPopup mPopup;
    /**
     * This flag is set if the TextView tries to display an error before it
     * is attached to the window (so its position is still unknown).
     * It causes the error to be shown later, when onAttachedToWindow()
     * is called.
     */
    private boolean mShowErrorAfterAttach;

    private CharWrapper mCharWrapper = null;

    private boolean mSelectionMoved = false;
    private boolean mTouchFocusSelected = false;

    private Marquee mMarquee;
    private boolean mRestartMarquee;

    private int mMarqueeRepeatLimit = 3;

    class InputContentType {
        int imeOptions = EditorInfo.IME_NULL;
        String privateImeOptions;
        CharSequence imeActionLabel;
        int imeActionId;
        Bundle extras;
        OnEditorActionListener onEditorActionListener;
        boolean enterDown;
    }
    InputContentType mInputContentType;

    class InputMethodState {
        Rect mCursorRectInWindow = new Rect();
        RectF mTmpRectF = new RectF();
        float[] mTmpOffset = new float[2];
        ExtractedTextRequest mExtracting;
        final ExtractedText mTmpExtracted = new ExtractedText();
        int mBatchEditNesting;
        boolean mCursorChanged;
        boolean mSelectionModeChanged;
        boolean mContentChanged;
        int mChangedStart, mChangedEnd, mChangedDelta;
    }
    InputMethodState mInputMethodState;

    private int mTextSelectHandleLeftRes;
    private int mTextSelectHandleRightRes;
    private int mTextSelectHandleRes;

    private int mTextEditSuggestionItemLayout;
    private SuggestionsPopupWindow mSuggestionsPopupWindow;
    private SuggestionRangeSpan mSuggestionRangeSpan;

    private int mCursorDrawableRes;
    private final Drawable[] mCursorDrawable = new Drawable[2];
    private int mCursorCount; // Actual current number of used mCursorDrawable: 0, 1 or 2

    private Drawable mSelectHandleLeft;
    private Drawable mSelectHandleRight;
    private Drawable mSelectHandleCenter;

    // Global listener that detects changes in the global position of the TextView
    private PositionListener mPositionListener;

    private float mLastDownPositionX, mLastDownPositionY;
    private Callback mCustomSelectionActionModeCallback;

    private final int mSquaredTouchSlopDistance;
    // Set when this TextView gained focus with some text selected. Will start selection mode.
    private boolean mCreatedWithASelection = false;

    private WordIterator mWordIterator;

    private SpellChecker mSpellChecker;

    // The alignment to pass to Layout, or null if not resolved.
    private Layout.Alignment mLayoutAlignment;

    // The default value for mTextAlign.
    private TextAlign mTextAlign = TextAlign.INHERIT;

    private static enum TextAlign {
        INHERIT, GRAVITY, TEXT_START, TEXT_END, CENTER, VIEW_START, VIEW_END;
    }

    private boolean mResolvedDrawables = false;

    /**
     * On some devices the fading edges add a performance penalty if used
     * extensively in the same layout. This mode indicates how the marquee
     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
     */
    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;

    /**
     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
     * the layout that should be used when the mode switches.
     */
    private Layout mSavedMarqueeModeLayout;

    /**
     * Draw marquee text with fading edges as usual
     */
    private static final int MARQUEE_FADE_NORMAL = 0;

    /**
     * Draw marquee text as ellipsize end while inactive instead of with the fade.
     * (Useful for devices where the fade can be expensive if overdone)
     */
    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;

    /**
     * Draw marquee text with fading edges because it is currently active/animating.
     */
    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;

    /*
     * Kick-start the font cache for the zygote process (to pay the cost of
     * initializing freetype for our default font only once).
     */
    static {
        Paint p = new Paint();
        p.setAntiAlias(true);
        // We don't care about the result, just the side-effect of measuring.
        p.measureText("H");
    }

    /**
     * Interface definition for a callback to be invoked when an action is
     * performed on the editor.
     */
    public interface OnEditorActionListener {
        /**
         * Called when an action is being performed.
         *
         * @param v The view that was clicked.
         * @param actionId Identifier of the action.  This will be either the
         * identifier you supplied, or {@link EditorInfo#IME_NULL
         * EditorInfo.IME_NULL} if being called due to the enter key
         * being pressed.
         * @param event If triggered by an enter key, this is the event;
         * otherwise, this is null.
         * @return Return true if you have consumed the action, else false.
         */
        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
    }

    public TextView(Context context) {
        this(context, null);
    }

    public TextView(Context context,
                    AttributeSet attrs) {
        this(context, attrs, com.android.internal.R.attr.textViewStyle);
    }

    @SuppressWarnings("deprecation")
    public TextView(Context context,
                    AttributeSet attrs,
                    int defStyle) {
        super(context, attrs, defStyle);
        mText = "";

        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
        mTextPaint.density = getResources().getDisplayMetrics().density;
        mTextPaint.setCompatibilityScaling(
                getResources().getCompatibilityInfo().applicationScale);

        // If we get the paint from the skin, we should set it to left, since
        // the layout always wants it to be left.
        // mTextPaint.setTextAlign(Paint.Align.LEFT);

        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        mHighlightPaint.setCompatibilityScaling(
                getResources().getCompatibilityInfo().applicationScale);

        mMovement = getDefaultMovementMethod();
        mTransformation = null;

        int textColorHighlight = 0;
        ColorStateList textColor = null;
        ColorStateList textColorHint = null;
        ColorStateList textColorLink = null;
        int textSize = 15;
        int typefaceIndex = -1;
        int styleIndex = -1;
        boolean allCaps = false;

        final Resources.Theme theme = context.getTheme();

        /*
         * Look the appearance up without checking first if it exists because
         * almost every TextView has one and it greatly simplifies the logic
         * to be able to parse the appearance first and then let specific tags
         * for this View override it.
         */
        TypedArray a = theme.obtainStyledAttributes(
                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
        TypedArray appearance = null;
        int ap = a.getResourceId(
                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
        a.recycle();
        if (ap != -1) {
            appearance = theme.obtainStyledAttributes(
                    ap, com.android.internal.R.styleable.TextAppearance);
        }
        if (appearance != null) {
            int n = appearance.getIndexCount();
            for (int i = 0; i < n; i++) {
                int attr = appearance.getIndex(i);

                switch (attr) {
                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
                    break;

                case com.android.internal.R.styleable.TextAppearance_textColor:
                    textColor = appearance.getColorStateList(attr);
                    break;

                case com.android.internal.R.styleable.TextAppearance_textColorHint:
                    textColorHint = appearance.getColorStateList(attr);
                    break;

                case com.android.internal.R.styleable.TextAppearance_textColorLink:
                    textColorLink = appearance.getColorStateList(attr);
                    break;

                case com.android.internal.R.styleable.TextAppearance_textSize:
                    textSize = appearance.getDimensionPixelSize(attr, textSize);
                    break;

                case com.android.internal.R.styleable.TextAppearance_typeface:
                    typefaceIndex = appearance.getInt(attr, -1);
                    break;

                case com.android.internal.R.styleable.TextAppearance_textStyle:
                    styleIndex = appearance.getInt(attr, -1);
                    break;

                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
                    allCaps = appearance.getBoolean(attr, false);
                    break;
                }
            }

            appearance.recycle();
        }

        boolean editable = getDefaultEditable();
        CharSequence inputMethod = null;
        int numeric = 0;
        CharSequence digits = null;
        boolean phone = false;
        boolean autotext = false;
        int autocap = -1;
        int buffertype = 0;
        boolean selectallonfocus = false;
        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
            drawableBottom = null, drawableStart = null, drawableEnd = null;
        int drawablePadding = 0;
        int ellipsize = -1;
        boolean singleLine = false;
        int maxlength = -1;
        CharSequence text = "";
        CharSequence hint = null;
        int shadowcolor = 0;
        float dx = 0, dy = 0, r = 0;
        boolean password = false;
        int inputType = EditorInfo.TYPE_NULL;

        a = theme.obtainStyledAttributes(
                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);

        int n = a.getIndexCount();
        for (int i = 0; i < n; i++) {
            int attr = a.getIndex(i);

            switch (attr) {
            case com.android.internal.R.styleable.TextView_editable:
                editable = a.getBoolean(attr, editable);
                break;

            case com.android.internal.R.styleable.TextView_inputMethod:
                inputMethod = a.getText(attr);
                break;

            case com.android.internal.R.styleable.TextView_numeric:
                numeric = a.getInt(attr, numeric);
                break;

            case com.android.internal.R.styleable.TextView_digits:
                digits = a.getText(attr);
                break;

            case com.android.internal.R.styleable.TextView_phoneNumber:
                phone = a.getBoolean(attr, phone);
                break;

            case com.android.internal.R.styleable.TextView_autoText:
                autotext = a.getBoolean(attr, autotext);
                break;

            case com.android.internal.R.styleable.TextView_capitalize:
                autocap = a.getInt(attr, autocap);
                break;

            case com.android.internal.R.styleable.TextView_bufferType:
                buffertype = a.getInt(attr, buffertype);
                break;

            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
                selectallonfocus = a.getBoolean(attr, selectallonfocus);
                break;

            case com.android.internal.R.styleable.TextView_autoLink:
                mAutoLinkMask = a.getInt(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_linksClickable:
                mLinksClickable = a.getBoolean(attr, true);
                break;

            case com.android.internal.R.styleable.TextView_drawableLeft:
                drawableLeft = a.getDrawable(attr);
                break;

            case com.android.internal.R.styleable.TextView_drawableTop:
                drawableTop = a.getDrawable(attr);
                break;

            case com.android.internal.R.styleable.TextView_drawableRight:
                drawableRight = a.getDrawable(attr);
                break;

            case com.android.internal.R.styleable.TextView_drawableBottom:
                drawableBottom = a.getDrawable(attr);
                break;

            case com.android.internal.R.styleable.TextView_drawableStart:
                drawableStart = a.getDrawable(attr);
                break;

            case com.android.internal.R.styleable.TextView_drawableEnd:
                drawableEnd = a.getDrawable(attr);
                break;

            case com.android.internal.R.styleable.TextView_drawablePadding:
                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
                break;

            case com.android.internal.R.styleable.TextView_maxLines:
                setMaxLines(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_maxHeight:
                setMaxHeight(a.getDimensionPixelSize(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_lines:
                setLines(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_height:
                setHeight(a.getDimensionPixelSize(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_minLines:
                setMinLines(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_minHeight:
                setMinHeight(a.getDimensionPixelSize(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_maxEms:
                setMaxEms(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_maxWidth:
                setMaxWidth(a.getDimensionPixelSize(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_ems:
                setEms(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_width:
                setWidth(a.getDimensionPixelSize(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_minEms:
                setMinEms(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_minWidth:
                setMinWidth(a.getDimensionPixelSize(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_gravity:
                setGravity(a.getInt(attr, -1));
                break;

            case com.android.internal.R.styleable.TextView_hint:
                hint = a.getText(attr);
                break;

            case com.android.internal.R.styleable.TextView_text:
                text = a.getText(attr);
                break;

            case com.android.internal.R.styleable.TextView_scrollHorizontally:
                if (a.getBoolean(attr, false)) {
                    setHorizontallyScrolling(true);
                }
                break;

            case com.android.internal.R.styleable.TextView_singleLine:
                singleLine = a.getBoolean(attr, singleLine);
                break;

            case com.android.internal.R.styleable.TextView_ellipsize:
                ellipsize = a.getInt(attr, ellipsize);
                break;

            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
                break;

            case com.android.internal.R.styleable.TextView_includeFontPadding:
                if (!a.getBoolean(attr, true)) {
                    setIncludeFontPadding(false);
                }
                break;

            case com.android.internal.R.styleable.TextView_cursorVisible:
                if (!a.getBoolean(attr, true)) {
                    setCursorVisible(false);
                }
                break;

            case com.android.internal.R.styleable.TextView_maxLength:
                maxlength = a.getInt(attr, -1);
                break;

            case com.android.internal.R.styleable.TextView_textScaleX:
                setTextScaleX(a.getFloat(attr, 1.0f));
                break;

            case com.android.internal.R.styleable.TextView_freezesText:
                mFreezesText = a.getBoolean(attr, false);
                break;

            case com.android.internal.R.styleable.TextView_shadowColor:
                shadowcolor = a.getInt(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_shadowDx:
                dx = a.getFloat(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_shadowDy:
                dy = a.getFloat(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_shadowRadius:
                r = a.getFloat(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_enabled:
                setEnabled(a.getBoolean(attr, isEnabled()));
                break;

            case com.android.internal.R.styleable.TextView_textColorHighlight:
                textColorHighlight = a.getColor(attr, textColorHighlight);
                break;

            case com.android.internal.R.styleable.TextView_textColor:
                textColor = a.getColorStateList(attr);
                break;

            case com.android.internal.R.styleable.TextView_textColorHint:
                textColorHint = a.getColorStateList(attr);
                break;

            case com.android.internal.R.styleable.TextView_textColorLink:
                textColorLink = a.getColorStateList(attr);
                break;

            case com.android.internal.R.styleable.TextView_textSize:
                textSize = a.getDimensionPixelSize(attr, textSize);
                break;

            case com.android.internal.R.styleable.TextView_typeface:
                typefaceIndex = a.getInt(attr, typefaceIndex);
                break;

            case com.android.internal.R.styleable.TextView_textStyle:
                styleIndex = a.getInt(attr, styleIndex);
                break;

            case com.android.internal.R.styleable.TextView_password:
                password = a.getBoolean(attr, password);
                break;

            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
                break;

            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
                mSpacingMult = a.getFloat(attr, mSpacingMult);
                break;

            case com.android.internal.R.styleable.TextView_inputType:
                inputType = a.getInt(attr, mInputType);
                break;

            case com.android.internal.R.styleable.TextView_imeOptions:
                if (mInputContentType == null) {
                    mInputContentType = new InputContentType();
                }
                mInputContentType.imeOptions = a.getInt(attr,
                        mInputContentType.imeOptions);
                break;

            case com.android.internal.R.styleable.TextView_imeActionLabel:
                if (mInputContentType == null) {
                    mInputContentType = new InputContentType();
                }
                mInputContentType.imeActionLabel = a.getText(attr);
                break;

            case com.android.internal.R.styleable.TextView_imeActionId:
                if (mInputContentType == null) {
                    mInputContentType = new InputContentType();
                }
                mInputContentType.imeActionId = a.getInt(attr,
                        mInputContentType.imeActionId);
                break;

            case com.android.internal.R.styleable.TextView_privateImeOptions:
                setPrivateImeOptions(a.getString(attr));
                break;

            case com.android.internal.R.styleable.TextView_editorExtras:
                try {
                    setInputExtras(a.getResourceId(attr, 0));
                } catch (XmlPullParserException e) {
                    Log.w(LOG_TAG, "Failure reading input extras", e);
                } catch (IOException e) {
                    Log.w(LOG_TAG, "Failure reading input extras", e);
                }
                break;

            case com.android.internal.R.styleable.TextView_textCursorDrawable:
                mCursorDrawableRes = a.getResourceId(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_textSelectHandle:
                mTextSelectHandleRes = a.getResourceId(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
                break;

            case com.android.internal.R.styleable.TextView_textIsSelectable:
                mTextIsSelectable = a.getBoolean(attr, false);
                break;

            case com.android.internal.R.styleable.TextView_textAllCaps:
                allCaps = a.getBoolean(attr, false);
                break;
            }
        }
        a.recycle();

        BufferType bufferType = BufferType.EDITABLE;

        final int variation =
                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
        final boolean passwordInputType = variation
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
        final boolean webPasswordInputType = variation
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
        final boolean numberPasswordInputType = variation
                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);

        if (inputMethod != null) {
            Class<?> c;

            try {
                c = Class.forName(inputMethod.toString());
            } catch (ClassNotFoundException ex) {
                throw new RuntimeException(ex);
            }

            try {
                mInput = (KeyListener) c.newInstance();
            } catch (InstantiationException ex) {
                throw new RuntimeException(ex);
            } catch (IllegalAccessException ex) {
                throw new RuntimeException(ex);
            }
            try {
                mInputType = inputType != EditorInfo.TYPE_NULL
                        ? inputType
                        : mInput.getInputType();
            } catch (IncompatibleClassChangeError e) {
                mInputType = EditorInfo.TYPE_CLASS_TEXT;
            }
        } else if (digits != null) {
            mInput = DigitsKeyListener.getInstance(digits.toString());
            // If no input type was specified, we will default to generic
            // text, since we can't tell the IME about the set of digits
            // that was selected.
            mInputType = inputType != EditorInfo.TYPE_NULL
                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
        } else if (inputType != EditorInfo.TYPE_NULL) {
            setInputType(inputType, true);
            // If set, the input type overrides what was set using the deprecated singleLine flag.
            singleLine = !isMultilineInputType(inputType);
        } else if (phone) {
            mInput = DialerKeyListener.getInstance();
            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
        } else if (numeric != 0) {
            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
                                                   (numeric & DECIMAL) != 0);
            inputType = EditorInfo.TYPE_CLASS_NUMBER;
            if ((numeric & SIGNED) != 0) {
                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
            }
            if ((numeric & DECIMAL) != 0) {
                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
            }
            mInputType = inputType;
        } else if (autotext || autocap != -1) {
            TextKeyListener.Capitalize cap;

            inputType = EditorInfo.TYPE_CLASS_TEXT;

            switch (autocap) {
            case 1:
                cap = TextKeyListener.Capitalize.SENTENCES;
                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
                break;

            case 2:
                cap = TextKeyListener.Capitalize.WORDS;
                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
                break;

            case 3:
                cap = TextKeyListener.Capitalize.CHARACTERS;
                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
                break;

            default:
                cap = TextKeyListener.Capitalize.NONE;
                break;
            }

            mInput = TextKeyListener.getInstance(autotext, cap);
            mInputType = inputType;
        } else if (mTextIsSelectable) {
            // Prevent text changes from keyboard.
            mInputType = EditorInfo.TYPE_NULL;
            mInput = null;
            bufferType = BufferType.SPANNABLE;
            // Required to request focus while in touch mode.
            setFocusableInTouchMode(true);
            // So that selection can be changed using arrow keys and touch is handled.
            setMovementMethod(ArrowKeyMovementMethod.getInstance());
        } else if (editable) {
            mInput = TextKeyListener.getInstance();
            mInputType = EditorInfo.TYPE_CLASS_TEXT;
        } else {
            mInput = null;

            switch (buffertype) {
                case 0:
                    bufferType = BufferType.NORMAL;
                    break;
                case 1:
                    bufferType = BufferType.SPANNABLE;
                    break;
                case 2:
                    bufferType = BufferType.EDITABLE;
                    break;
            }
        }

        // mInputType has been set from inputType, possibly modified by mInputMethod.
        // Specialize mInputType to [web]password if we have a text class and the original input
        // type was a password.
        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
            if (password || passwordInputType) {
                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
                        | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
            }
            if (webPasswordInputType) {
                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
                        | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD;
            }
        } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) {
            if (numberPasswordInputType) {
                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
                        | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD;
            }
        }

        if (selectallonfocus) {
            mSelectAllOnFocus = true;

            if (bufferType == BufferType.NORMAL)
                bufferType = BufferType.SPANNABLE;
        }

        setCompoundDrawablesWithIntrinsicBounds(
            drawableLeft, drawableTop, drawableRight, drawableBottom);
        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
        setCompoundDrawablePadding(drawablePadding);

        // Same as setSingleLine(), but make sure the transformation method and the maximum number
        // of lines of height are unchanged for multi-line TextViews.
        setInputTypeSingleLine(singleLine);
        applySingleLine(singleLine, singleLine, singleLine);

        if (singleLine && mInput == null && ellipsize < 0) {
                ellipsize = 3; // END
        }

        switch (ellipsize) {
            case 1:
                setEllipsize(TextUtils.TruncateAt.START);
                break;
            case 2:
                setEllipsize(TextUtils.TruncateAt.MIDDLE);
                break;
            case 3:
                setEllipsize(TextUtils.TruncateAt.END);
                break;
            case 4:
                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
                    setHorizontalFadingEdgeEnabled(true);
                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
                } else {
                    setHorizontalFadingEdgeEnabled(false);
                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
                }
                setEllipsize(TextUtils.TruncateAt.MARQUEE);
                break;
        }

        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
        setHintTextColor(textColorHint);
        setLinkTextColor(textColorLink);
        if (textColorHighlight != 0) {
            setHighlightColor(textColorHighlight);
        }
        setRawTextSize(textSize);

        if (allCaps) {
            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
        }

        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
            setTransformationMethod(PasswordTransformationMethod.getInstance());
            typefaceIndex = MONOSPACE;
        } else if ((mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
            typefaceIndex = MONOSPACE;
        }

        setTypefaceByIndex(typefaceIndex, styleIndex);

        if (shadowcolor != 0) {
            setShadowLayer(r, dx, dy, shadowcolor);
        }

        if (maxlength >= 0) {
            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
        } else {
            setFilters(NO_FILTERS);
        }

        setText(text, bufferType);
        if (hint != null) setHint(hint);

        /*
         * Views are not normally focusable unless specified to be.
         * However, TextViews that have input or movement methods *are*
         * focusable by default.
         */
        a = context.obtainStyledAttributes(attrs,
                                           com.android.internal.R.styleable.View,
                                           defStyle, 0);

        boolean focusable = mMovement != null || mInput != null;
        boolean clickable = focusable;
        boolean longClickable = focusable;

        n = a.getIndexCount();
        for (int i = 0; i < n; i++) {
            int attr = a.getIndex(i);

            switch (attr) {
            case com.android.internal.R.styleable.View_focusable:
                focusable = a.getBoolean(attr, focusable);
                break;

            case com.android.internal.R.styleable.View_clickable:
                clickable = a.getBoolean(attr, clickable);
                break;

            case com.android.internal.R.styleable.View_longClickable:
                longClickable = a.getBoolean(attr, longClickable);
                break;
            }
        }
        a.recycle();

        setFocusable(focusable);
        setClickable(clickable);
        setLongClickable(longClickable);

        prepareCursorControllers();

        final ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
        final int touchSlop = viewConfiguration.getScaledTouchSlop();
        mSquaredTouchSlopDistance = touchSlop * touchSlop;
    }

    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
        Typeface tf = null;
        switch (typefaceIndex) {
            case SANS:
                tf = Typeface.SANS_SERIF;
                break;

            case SERIF:
                tf = Typeface.SERIF;
                break;

            case MONOSPACE:
                tf = Typeface.MONOSPACE;
                break;
        }

        setTypeface(tf, styleIndex);
    }

    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
        boolean hasRelativeDrawables = (start != null) || (end != null);
        if (hasRelativeDrawables) {
            Drawables dr = mDrawables;
            if (dr == null) {
                mDrawables = dr = new Drawables();
            }
            final Rect compoundRect = dr.mCompoundRect;
            int[] state = getDrawableState();
            if (start != null) {
                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
                start.setState(state);
                start.copyBounds(compoundRect);
                start.setCallback(this);

                dr.mDrawableStart = start;
                dr.mDrawableSizeStart = compoundRect.width();
                dr.mDrawableHeightStart = compoundRect.height();
            } else {
                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
            }
            if (end != null) {
                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
                end.setState(state);
                end.copyBounds(compoundRect);
                end.setCallback(this);

                dr.mDrawableEnd = end;
                dr.mDrawableSizeEnd = compoundRect.width();
                dr.mDrawableHeightEnd = compoundRect.height();
            } else {
                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
            }
        }
    }

    @Override
    public void setEnabled(boolean enabled) {
        if (enabled == isEnabled()) {
            return;
        }

        if (!enabled) {
            // Hide the soft input if the currently active TextView is disabled
            InputMethodManager imm = InputMethodManager.peekInstance();
            if (imm != null && imm.isActive(this)) {
                imm.hideSoftInputFromWindow(getWindowToken(), 0);
            }
        }
        super.setEnabled(enabled);
        prepareCursorControllers();
    }

    /**
     * Sets the typeface and style in which the text should be displayed,
     * and turns on the fake bold and italic bits in the Paint if the
     * Typeface that you provided does not have all the bits in the
     * style that you specified.
     *
     * @attr ref android.R.styleable#TextView_typeface
     * @attr ref android.R.styleable#TextView_textStyle
     */
    public void setTypeface(Typeface tf, int style) {
        if (style > 0) {
            if (tf == null) {
                tf = Typeface.defaultFromStyle(style);
            } else {
                tf = Typeface.create(tf, style);
            }

            setTypeface(tf);
            // now compute what (if any) algorithmic styling is needed
            int typefaceStyle = tf != null ? tf.getStyle() : 0;
            int need = style & ~typefaceStyle;
            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
        } else {
            mTextPaint.setFakeBoldText(false);
            mTextPaint.setTextSkewX(0);
            setTypeface(tf);
        }
    }

    /**
     * Subclasses override this to specify that they have a KeyListener
     * by default even if not specifically called for in the XML options.
     */
    protected boolean getDefaultEditable() {
        return false;
    }

    /**
     * Subclasses override this to specify a default movement method.
     */
    protected MovementMethod getDefaultMovementMethod() {
        return null;
    }

    /**
     * Return the text the TextView is displaying. If setText() was called with
     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
     * the return value from this method to Spannable or Editable, respectively.
     *
     * Note: The content of the return value should not be modified. If you want
     * a modifiable one, you should make your own copy first.
     */
    @ViewDebug.CapturedViewProperty
    public CharSequence getText() {
        return mText;
    }

    /**
     * Returns the length, in characters, of the text managed by this TextView
     */
    public int length() {
        return mText.length();
    }

    /**
     * Return the text the TextView is displaying as an Editable object.  If
     * the text is not editable, null is returned.
     *
     * @see #getText
     */
    public Editable getEditableText() {
        return (mText instanceof Editable) ? (Editable)mText : null;
    }

    /**
     * @return the height of one standard line in pixels.  Note that markup
     * within the text can cause individual lines to be taller or shorter
     * than this height, and the layout may contain additional first-
     * or last-line padding.
     */
    public int getLineHeight() {
        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
    }

    /**
     * @return the Layout that is currently being used to display the text.
     * This can be null if the text or width has recently changes.
     */
    public final Layout getLayout() {
        return mLayout;
    }

    /**
     * @return the current key listener for this TextView.
     * This will frequently be null for non-EditText TextViews.
     */
    public final KeyListener getKeyListener() {
        return mInput;
    }

    /**
     * Sets the key listener to be used with this TextView.  This can be null
     * to disallow user input.  Note that this method has significant and
     * subtle interactions with soft keyboards and other input method:
     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
     * for important details.  Calling this method will replace the current
     * content type of the text view with the content type returned by the
     * key listener.
     * <p>
     * Be warned that if you want a TextView with a key listener or movement
     * method not to be focusable, or if you want a TextView without a
     * key listener or movement method to be focusable, you must call
     * {@link #setFocusable} again after calling this to get the focusability
     * back the way you want it.
     *
     * @attr ref android.R.styleable#TextView_numeric
     * @attr ref android.R.styleable#TextView_digits
     * @attr ref android.R.styleable#TextView_phoneNumber
     * @attr ref android.R.styleable#TextView_inputMethod
     * @attr ref android.R.styleable#TextView_capitalize
     * @attr ref android.R.styleable#TextView_autoText
     */
    public void setKeyListener(KeyListener input) {
        setKeyListenerOnly(input);
        fixFocusableAndClickableSettings();

        if (input != null) {
            try {
                mInputType = mInput.getInputType();
            } catch (IncompatibleClassChangeError e) {
                mInputType = EditorInfo.TYPE_CLASS_TEXT;
            }
            // Change inputType, without affecting transformation.
            // No need to applySingleLine since mSingleLine is unchanged.
            setInputTypeSingleLine(mSingleLine);
        } else {
            mInputType = EditorInfo.TYPE_NULL;
        }

        InputMethodManager imm = InputMethodManager.peekInstance();
        if (imm != null) imm.restartInput(this);
    }

    private void setKeyListenerOnly(KeyListener input) {
        mInput = input;
        if (mInput != null && !(mText instanceof Editable))
            setText(mText);

        setFilters((Editable) mText, mFilters);
    }

    /**
     * @return the movement method being used for this TextView.
     * This will frequently be null for non-EditText TextViews.
     */
    public final MovementMethod getMovementMethod() {
        return mMovement;
    }

    /**
     * Sets the movement method (arrow key handler) to be used for
     * this TextView.  This can be null to disallow using the arrow keys
     * to move the cursor or scroll the view.
     * <p>
     * Be warned that if you want a TextView with a key listener or movement
     * method not to be focusable, or if you want a TextView without a
     * key listener or movement method to be focusable, you must call
     * {@link #setFocusable} again after calling this to get the focusability
     * back the way you want it.
     */
    public final void setMovementMethod(MovementMethod movement) {
        mMovement = movement;

        if (mMovement != null && !(mText instanceof Spannable))
            setText(mText);

        fixFocusableAndClickableSettings();

        // SelectionModifierCursorController depends on textCanBeSelected, which depends on mMovement
        prepareCursorControllers();
    }

    private void fixFocusableAndClickableSettings() {
        if ((mMovement != null) || mInput != null) {
            setFocusable(true);
            setClickable(true);
            setLongClickable(true);
        } else {
            setFocusable(false);
            setClickable(false);
            setLongClickable(false);
        }
    }

    /**
     * @return the current transformation method for this TextView.
     * This will frequently be null except for single-line and password
     * fields.
     */
    public final TransformationMethod getTransformationMethod() {
        return mTransformation;
    }

    /**
     * Sets the transformation that is applied to the text that this
     * TextView is displaying.
     *
     * @attr ref android.R.styleable#TextView_password
     * @attr ref android.R.styleable#TextView_singleLine
     */
    public final void setTransformationMethod(TransformationMethod method) {
        if (method == mTransformation) {
            // Avoid the setText() below if the transformation is
            // the same.
            return;
        }
        if (mTransformation != null) {
            if (mText instanceof Spannable) {
                ((Spannable) mText).removeSpan(mTransformation);
            }
        }

        mTransformation = method;

        if (method instanceof TransformationMethod2) {
            TransformationMethod2 method2 = (TransformationMethod2) method;
            mAllowTransformationLengthChange = !mTextIsSelectable && !(mText instanceof Editable);
            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
        } else {
            mAllowTransformationLengthChange = false;
        }

        setText(mText);
    }

    /**
     * Returns the top padding of the view, plus space for the top
     * Drawable if any.
     */
    public int getCompoundPaddingTop() {
        final Drawables dr = mDrawables;
        if (dr == null || dr.mDrawableTop == null) {
            return mPaddingTop;
        } else {
            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
        }
    }

    /**
     * Returns the bottom padding of the view, plus space for the bottom
     * Drawable if any.
     */
    public int getCompoundPaddingBottom() {
        final Drawables dr = mDrawables;
        if (dr == null || dr.mDrawableBottom == null) {
            return mPaddingBottom;
        } else {
            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
        }
    }

    /**
     * Returns the left padding of the view, plus space for the left
     * Drawable if any.
     */
    public int getCompoundPaddingLeft() {
        final Drawables dr = mDrawables;
        if (dr == null || dr.mDrawableLeft == null) {
            return mPaddingLeft;
        } else {
            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
        }
    }

    /**
     * Returns the right padding of the view, plus space for the right
     * Drawable if any.
     */
    public int getCompoundPaddingRight() {
        final Drawables dr = mDrawables;
        if (dr == null || dr.mDrawableRight == null) {
            return mPaddingRight;
        } else {
            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
        }
    }

    /**
     * Returns the start padding of the view, plus space for the start
     * Drawable if any.
     *
     * @hide
     */
    public int getCompoundPaddingStart() {
        resolveDrawables();
        switch(getResolvedLayoutDirection()) {
            default:
            case LAYOUT_DIRECTION_LTR:
                return getCompoundPaddingLeft();
            case LAYOUT_DIRECTION_RTL:
                return getCompoundPaddingRight();
        }
    }

    /**
     * Returns the end padding of the view, plus space for the end
     * Drawable if any.
     *
     * @hide
     */
    public int getCompoundPaddingEnd() {
        resolveDrawables();
        switch(getResolvedLayoutDirection()) {
            default:
            case LAYOUT_DIRECTION_LTR:
                return getCompoundPaddingRight();
            case LAYOUT_DIRECTION_RTL:
                return getCompoundPaddingLeft();
        }
    }

    /**
     * Returns the extended top padding of the view, including both the
     * top Drawable if any and any extra space to keep more than maxLines
     * of text from showing.  It is only valid to call this after measuring.
     */
    public int getExtendedPaddingTop() {
        if (mMaxMode != LINES) {
            return getCompoundPaddingTop();
        }

        if (mLayout.getLineCount() <= mMaximum) {
            return getCompoundPaddingTop();
        }

        int top = getCompoundPaddingTop();
        int bottom = getCompoundPaddingBottom();
        int viewht = getHeight() - top - bottom;
        int layoutht = mLayout.getLineTop(mMaximum);

        if (layoutht >= viewht) {
            return top;
        }

        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
        if (gravity == Gravity.TOP) {
            return top;
        } else if (gravity == Gravity.BOTTOM) {
            return top + viewht - layoutht;
        } else { // (gravity == Gravity.CENTER_VERTICAL)
            return top + (viewht - layoutht) / 2;
        }
    }

    /**
     * Returns the extended bottom padding of the view, including both the
     * bottom Drawable if any and any extra space to keep more than maxLines
     * of text from showing.  It is only valid to call this after measuring.
     */
    public int getExtendedPaddingBottom() {
        if (mMaxMode != LINES) {
            return getCompoundPaddingBottom();
        }

        if (mLayout.getLineCount() <= mMaximum) {
            return getCompoundPaddingBottom();
        }

        int top = getCompoundPaddingTop();
        int bottom = getCompoundPaddingBottom();
        int viewht = getHeight() - top - bottom;
        int layoutht = mLayout.getLineTop(mMaximum);

        if (layoutht >= viewht) {
            return bottom;
        }

        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
        if (gravity == Gravity.TOP) {
            return bottom + viewht - layoutht;
        } else if (gravity == Gravity.BOTTOM) {
            return bottom;
        } else { // (gravity == Gravity.CENTER_VERTICAL)
            return bottom + (viewht - layoutht) / 2;
        }
    }

    /**
     * Returns the total left padding of the view, including the left
     * Drawable if any.
     */
    public int getTotalPaddingLeft() {
        return getCompoundPaddingLeft();
    }

    /**
     * Returns the total right padding of the view, including the right
     * Drawable if any.
     */
    public int getTotalPaddingRight() {
        return getCompoundPaddingRight();
    }

    /**
     * Returns the total start padding of the view, including the start
     * Drawable if any.
     *
     * @hide
     */
    public int getTotalPaddingStart() {
        return getCompoundPaddingStart();
    }

    /**
     * Returns the total end padding of the view, including the end
     * Drawable if any.
     *
     * @hide
     */
    public int getTotalPaddingEnd() {
        return getCompoundPaddingEnd();
    }

    /**
     * Returns the total top padding of the view, including the top
     * Drawable if any, the extra space to keep more than maxLines
     * from showing, and the vertical offset for gravity, if any.
     */
    public int getTotalPaddingTop() {
        return getExtendedPaddingTop() + getVerticalOffset(true);
    }

    /**
     * Returns the total bottom padding of the view, including the bottom
     * Drawable if any, the extra space to keep more than maxLines
     * from showing, and the vertical offset for gravity, if any.
     */
    public int getTotalPaddingBottom() {
        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
    }

    /**
     * Sets the Drawables (if any) to appear to the left of, above,
     * to the right of, and below the text.  Use null if you do not
     * want a Drawable there.  The Drawables must already have had
     * {@link Drawable#setBounds} called.
     *
     * @attr ref android.R.styleable#TextView_drawableLeft
     * @attr ref android.R.styleable#TextView_drawableTop
     * @attr ref android.R.styleable#TextView_drawableRight
     * @attr ref android.R.styleable#TextView_drawableBottom
     */
    public void setCompoundDrawables(Drawable left, Drawable top,
                                     Drawable right, Drawable bottom) {
        Drawables dr = mDrawables;

        final boolean drawables = left != null || top != null
                || right != null || bottom != null;

        if (!drawables) {
            // Clearing drawables...  can we free the data structure?
            if (dr != null) {
                if (dr.mDrawablePadding == 0) {
                    mDrawables = null;
                } else {
                    // We need to retain the last set padding, so just clear
                    // out all of the fields in the existing structure.
                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
                    dr.mDrawableLeft = null;
                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
                    dr.mDrawableTop = null;
                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
                    dr.mDrawableRight = null;
                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
                    dr.mDrawableBottom = null;
                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
                }
            }
        } else {
            if (dr == null) {
                mDrawables = dr = new Drawables();
            }

            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
                dr.mDrawableLeft.setCallback(null);
            }
            dr.mDrawableLeft = left;

            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
                dr.mDrawableTop.setCallback(null);
            }
            dr.mDrawableTop = top;

            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
                dr.mDrawableRight.setCallback(null);
            }
            dr.mDrawableRight = right;

            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
                dr.mDrawableBottom.setCallback(null);
            }
            dr.mDrawableBottom = bottom;

            final Rect compoundRect = dr.mCompoundRect;
            int[] state;

            state = getDrawableState();

            if (left != null) {
                left.setState(state);
                left.copyBounds(compoundRect);
                left.setCallback(this);
                dr.mDrawableSizeLeft = compoundRect.width();
                dr.mDrawableHeightLeft = compoundRect.height();
            } else {
                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
            }

            if (right != null) {
                right.setState(state);
                right.copyBounds(compoundRect);
                right.setCallback(this);
                dr.mDrawableSizeRight = compoundRect.width();
                dr.mDrawableHeightRight = compoundRect.height();
            } else {
                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
            }

            if (top != null) {
                top.setState(state);
                top.copyBounds(compoundRect);
                top.setCallback(this);
                dr.mDrawableSizeTop = compoundRect.height();
                dr.mDrawableWidthTop = compoundRect.width();
            } else {
                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
            }

            if (bottom != null) {
                bottom.setState(state);
                bottom.copyBounds(compoundRect);
                bottom.setCallback(this);
                dr.mDrawableSizeBottom = compoundRect.height();
                dr.mDrawableWidthBottom = compoundRect.width();
            } else {
                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
            }
        }

        invalidate();
        requestLayout();
    }

    /**
     * Sets the Drawables (if any) to appear to the left of, above,
     * to the right of, and below the text.  Use 0 if you do not
     * want a Drawable there. The Drawables' bounds will be set to
     * their intrinsic bounds.
     *
     * @param left Resource identifier of the left Drawable.
     * @param top Resource identifier of the top Drawable.
     * @param right Resource identifier of the right Drawable.
     * @param bottom Resource identifier of the bottom Drawable.
     *
     * @attr ref android.R.styleable#TextView_drawableLeft
     * @attr ref android.R.styleable#TextView_drawableTop
     * @attr ref android.R.styleable#TextView_drawableRight
     * @attr ref android.R.styleable#TextView_drawableBottom
     */
    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
        final Resources resources = getContext().getResources();
        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
                top != 0 ? resources.getDrawable(top) : null,
                right != 0 ? resources.getDrawable(right) : null,
                bottom != 0 ? resources.getDrawable(bottom) : null);
    }

    /**
     * Sets the Drawables (if any) to appear to the left of, above,
     * to the right of, and below the text.  Use null if you do not
     * want a Drawable there. The Drawables' bounds will be set to
     * their intrinsic bounds.
     *
     * @attr ref android.R.styleable#TextView_drawableLeft
     * @attr ref android.R.styleable#TextView_drawableTop
     * @attr ref android.R.styleable#TextView_drawableRight
     * @attr ref android.R.styleable#TextView_drawableBottom
     */
    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
            Drawable right, Drawable bottom) {

        if (left != null) {
            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
        }
        if (right != null) {
            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
        }
        if (top != null) {
            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
        }
        if (bottom != null) {
            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
        }
        setCompoundDrawables(left, top, right, bottom);
    }

    /**
     * Sets the Drawables (if any) to appear to the start of, above,
     * to the end of, and below the text.  Use null if you do not
     * want a Drawable there.  The Drawables must already have had
     * {@link Drawable#setBounds} called.
     *
     * @attr ref android.R.styleable#TextView_drawableStart
     * @attr ref android.R.styleable#TextView_drawableTop
     * @attr ref android.R.styleable#TextView_drawableEnd
     * @attr ref android.R.styleable#TextView_drawableBottom
     *
     * @hide
     */
    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
                                     Drawable end, Drawable bottom) {
        Drawables dr = mDrawables;

        final boolean drawables = start != null || top != null
                || end != null || bottom != null;

        if (!drawables) {
            // Clearing drawables...  can we free the data structure?
            if (dr != null) {
                if (dr.mDrawablePadding == 0) {
                    mDrawables = null;
                } else {
                    // We need to retain the last set padding, so just clear
                    // out all of the fields in the existing structure.
                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
                    dr.mDrawableStart = null;
                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
                    dr.mDrawableTop = null;
                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
                    dr.mDrawableEnd = null;
                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
                    dr.mDrawableBottom = null;
                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
                }
            }
        } else {
            if (dr == null) {
                mDrawables = dr = new Drawables();
            }

            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
                dr.mDrawableStart.setCallback(null);
            }
            dr.mDrawableStart = start;

            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
                dr.mDrawableTop.setCallback(null);
            }
            dr.mDrawableTop = top;

            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
                dr.mDrawableEnd.setCallback(null);
            }
            dr.mDrawableEnd = end;

            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
                dr.mDrawableBottom.setCallback(null);
            }
            dr.mDrawableBottom = bottom;

            final Rect compoundRect = dr.mCompoundRect;
            int[] state;

            state = getDrawableState();

            if (start != null) {
                start.setState(state);
                start.copyBounds(compoundRect);
                start.setCallback(this);
                dr.mDrawableSizeStart = compoundRect.width();
                dr.mDrawableHeightStart = compoundRect.height();
            } else {
                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
            }

            if (end != null) {
                end.setState(state);
                end.copyBounds(compoundRect);
                end.setCallback(this);
                dr.mDrawableSizeEnd = compoundRect.width();
                dr.mDrawableHeightEnd = compoundRect.height();
            } else {
                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
            }

            if (top != null) {
                top.setState(state);
                top.copyBounds(compoundRect);
                top.setCallback(this);
                dr.mDrawableSizeTop = compoundRect.height();
                dr.mDrawableWidthTop = compoundRect.width();
            } else {
                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
            }

            if (bottom != null) {
                bottom.setState(state);
                bottom.copyBounds(compoundRect);
                bottom.setCallback(this);
                dr.mDrawableSizeBottom = compoundRect.height();
                dr.mDrawableWidthBottom = compoundRect.width();
            } else {
                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
            }
        }

        resolveDrawables();
        invalidate();
        requestLayout();
    }

    /**
     * Sets the Drawables (if any) to appear to the start of, above,
     * to the end of, and below the text.  Use 0 if you do not
     * want a Drawable there. The Drawables' bounds will be set to
     * their intrinsic bounds.
     *
     * @param start Resource identifier of the start Drawable.
     * @param top Resource identifier of the top Drawable.
     * @param end Resource identifier of the end Drawable.
     * @param bottom Resource identifier of the bottom Drawable.
     *
     * @attr ref android.R.styleable#TextView_drawableStart
     * @attr ref android.R.styleable#TextView_drawableTop
     * @attr ref android.R.styleable#TextView_drawableEnd
     * @attr ref android.R.styleable#TextView_drawableBottom
     *
     * @hide
     */
    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
            int bottom) {
        resetResolvedDrawables();
        final Resources resources = getContext().getResources();
        setCompoundDrawablesRelativeWithIntrinsicBounds(
                start != 0 ? resources.getDrawable(start) : null,
                top != 0 ? resources.getDrawable(top) : null,
                end != 0 ? resources.getDrawable(end) : null,
                bottom != 0 ? resources.getDrawable(bottom) : null);
    }

    /**
     * Sets the Drawables (if any) to appear to the start of, above,
     * to the end of, and below the text.  Use null if you do not
     * want a Drawable there. The Drawables' bounds will be set to
     * their intrinsic bounds.
     *
     * @attr ref android.R.styleable#TextView_drawableStart
     * @attr ref android.R.styleable#TextView_drawableTop
     * @attr ref android.R.styleable#TextView_drawableEnd
     * @attr ref android.R.styleable#TextView_drawableBottom
     *
     * @hide
     */
    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
            Drawable end, Drawable bottom) {

        resetResolvedDrawables();
        if (start != null) {
            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
        }
        if (end != null) {
            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
        }
        if (top != null) {
            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
        }
        if (bottom != null) {
            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
        }
        setCompoundDrawablesRelative(start, top, end, bottom);
    }

    /**
     * Returns drawables for the left, top, right, and bottom borders.
     */
    public Drawable[] getCompoundDrawables() {
        final Drawables dr = mDrawables;
        if (dr != null) {
            return new Drawable[] {
                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
            };
        } else {
            return new Drawable[] { null, null, null, null };
        }
    }

    /**
     * Returns drawables for the start, top, end, and bottom borders.
     *
     * @hide
     */
    public Drawable[] getCompoundDrawablesRelative() {
        final Drawables dr = mDrawables;
        if (dr != null) {
            return new Drawable[] {
                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
            };
        } else {
            return new Drawable[] { null, null, null, null };
        }
    }

    /**
     * Sets the size of the padding between the compound drawables and
     * the text.
     *
     * @attr ref android.R.styleable#TextView_drawablePadding
     */
    public void setCompoundDrawablePadding(int pad) {
        Drawables dr = mDrawables;
        if (pad == 0) {
            if (dr != null) {
                dr.mDrawablePadding = pad;
            }
        } else {
            if (dr == null) {
                mDrawables = dr = new Drawables();
            }
            dr.mDrawablePadding = pad;
        }

        invalidate();
        requestLayout();
    }

    /**
     * Returns the padding between the compound drawables and the text.
     */
    public int getCompoundDrawablePadding() {
        final Drawables dr = mDrawables;
        return dr != null ? dr.mDrawablePadding : 0;
    }

    @Override
    public void setPadding(int left, int top, int right, int bottom) {
        if (left != mPaddingLeft ||
            right != mPaddingRight ||
            top != mPaddingTop ||
            bottom != mPaddingBottom) {
            nullLayouts();
        }

        // the super call will requestLayout()
        super.setPadding(left, top, right, bottom);
        invalidate();
    }

    /**
     * Gets the autolink mask of the text.  See {@link
     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
     * possible values.
     *
     * @attr ref android.R.styleable#TextView_autoLink
     */
    public final int getAutoLinkMask() {
        return mAutoLinkMask;
    }

    /**
     * Sets the text color, size, style, hint color, and highlight color
     * from the specified TextAppearance resource.
     */
    public void setTextAppearance(Context context, int resid) {
        TypedArray appearance =
            context.obtainStyledAttributes(resid,
                                           com.android.internal.R.styleable.TextAppearance);

        int color;
        ColorStateList colors;
        int ts;

        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
        if (color != 0) {
            setHighlightColor(color);
        }

        colors = appearance.getColorStateList(com.android.internal.R.styleable.
                                              TextAppearance_textColor);
        if (colors != null) {
            setTextColor(colors);
        }

        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
                                              TextAppearance_textSize, 0);
        if (ts != 0) {
            setRawTextSize(ts);
        }

        colors = appearance.getColorStateList(com.android.internal.R.styleable.
                                              TextAppearance_textColorHint);
        if (colors != null) {
            setHintTextColor(colors);
        }

        colors = appearance.getColorStateList(com.android.internal.R.styleable.
                                              TextAppearance_textColorLink);
        if (colors != null) {
            setLinkTextColor(colors);
        }

        int typefaceIndex, styleIndex;

        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
                                          TextAppearance_typeface, -1);
        styleIndex = appearance.getInt(com.android.internal.R.styleable.
                                       TextAppearance_textStyle, -1);

        setTypefaceByIndex(typefaceIndex, styleIndex);

        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
                false)) {
            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
        }

        appearance.recycle();
    }

    /**
     * @return the size (in pixels) of the default text size in this TextView.
     */
    public float getTextSize() {
        return mTextPaint.getTextSize();
    }

    /**
     * Set the default text size to the given value, interpreted as "scaled
     * pixel" units.  This size is adjusted based on the current density and
     * user font size preference.
     *
     * @param size The scaled pixel size.
     *
     * @attr ref android.R.styleable#TextView_textSize
     */
    @android.view.RemotableViewMethod
    public void setTextSize(float size) {
        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
    }

    /**
     * Set the default text size to a given unit and value.  See {@link
     * TypedValue} for the possible dimension units.
     *
     * @param unit The desired dimension unit.
     * @param size The desired size in the given units.
     *
     * @attr ref android.R.styleable#TextView_textSize
     */
    public void setTextSize(int unit, float size) {
        Context c = getContext();
        Resources r;

        if (c == null)
            r = Resources.getSystem();
        else
            r = c.getResources();

        setRawTextSize(TypedValue.applyDimension(
            unit, size, r.getDisplayMetrics()));
    }

    private void setRawTextSize(float size) {
        if (size != mTextPaint.getTextSize()) {
            mTextPaint.setTextSize(size);

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * @return the extent by which text is currently being stretched
     * horizontally.  This will usually be 1.
     */
    public float getTextScaleX() {
        return mTextPaint.getTextScaleX();
    }

    /**
     * Sets the extent by which text should be stretched horizontally.
     *
     * @attr ref android.R.styleable#TextView_textScaleX
     */
    @android.view.RemotableViewMethod
    public void setTextScaleX(float size) {
        if (size != mTextPaint.getTextScaleX()) {
            mUserSetTextScaleX = true;
            mTextPaint.setTextScaleX(size);

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * Sets the typeface and style in which the text should be displayed.
     * Note that not all Typeface families actually have bold and italic
     * variants, so you may need to use
     * {@link #setTypeface(Typeface, int)} to get the appearance
     * that you actually want.
     *
     * @attr ref android.R.styleable#TextView_typeface
     * @attr ref android.R.styleable#TextView_textStyle
     */
    public void setTypeface(Typeface tf) {
        if (mTextPaint.getTypeface() != tf) {
            mTextPaint.setTypeface(tf);

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * @return the current typeface and style in which the text is being
     * displayed.
     */
    public Typeface getTypeface() {
        return mTextPaint.getTypeface();
    }

    /**
     * Sets the text color for all the states (normal, selected,
     * focused) to be this color.
     *
     * @attr ref android.R.styleable#TextView_textColor
     */
    @android.view.RemotableViewMethod
    public void setTextColor(int color) {
        mTextColor = ColorStateList.valueOf(color);
        updateTextColors();
    }

    /**
     * Sets the text color.
     *
     * @attr ref android.R.styleable#TextView_textColor
     */
    public void setTextColor(ColorStateList colors) {
        if (colors == null) {
            throw new NullPointerException();
        }

        mTextColor = colors;
        updateTextColors();
    }

    /**
     * Return the set of text colors.
     *
     * @return Returns the set of text colors.
     */
    public final ColorStateList getTextColors() {
        return mTextColor;
    }

    /**
     * <p>Return the current color selected for normal text.</p>
     *
     * @return Returns the current text color.
     */
    public final int getCurrentTextColor() {
        return mCurTextColor;
    }

    /**
     * Sets the color used to display the selection highlight.
     *
     * @attr ref android.R.styleable#TextView_textColorHighlight
     */
    @android.view.RemotableViewMethod
    public void setHighlightColor(int color) {
        if (mHighlightColor != color) {
            mHighlightColor = color;
            invalidate();
        }
    }

    /**
     * Gives the text a shadow of the specified radius and color, the specified
     * distance from its normal position.
     *
     * @attr ref android.R.styleable#TextView_shadowColor
     * @attr ref android.R.styleable#TextView_shadowDx
     * @attr ref android.R.styleable#TextView_shadowDy
     * @attr ref android.R.styleable#TextView_shadowRadius
     */
    public void setShadowLayer(float radius, float dx, float dy, int color) {
        mTextPaint.setShadowLayer(radius, dx, dy, color);

        mShadowRadius = radius;
        mShadowDx = dx;
        mShadowDy = dy;

        invalidate();
    }

    /**
     * @return the base paint used for the text.  Please use this only to
     * consult the Paint's properties and not to change them.
     */
    public TextPaint getPaint() {
        return mTextPaint;
    }

    /**
     * Sets the autolink mask of the text.  See {@link
     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
     * possible values.
     *
     * @attr ref android.R.styleable#TextView_autoLink
     */
    @android.view.RemotableViewMethod
    public final void setAutoLinkMask(int mask) {
        mAutoLinkMask = mask;
    }

    /**
     * Sets whether the movement method will automatically be set to
     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
     * set to nonzero and links are detected in {@link #setText}.
     * The default is true.
     *
     * @attr ref android.R.styleable#TextView_linksClickable
     */
    @android.view.RemotableViewMethod
    public final void setLinksClickable(boolean whether) {
        mLinksClickable = whether;
    }

    /**
     * Returns whether the movement method will automatically be set to
     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
     * set to nonzero and links are detected in {@link #setText}.
     * The default is true.
     *
     * @attr ref android.R.styleable#TextView_linksClickable
     */
    public final boolean getLinksClickable() {
        return mLinksClickable;
    }

    /**
     * Returns the list of URLSpans attached to the text
     * (by {@link Linkify} or otherwise) if any.  You can call
     * {@link URLSpan#getURL} on them to find where they link to
     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
     * to find the region of the text they are attached to.
     */
    public URLSpan[] getUrls() {
        if (mText instanceof Spanned) {
            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
        } else {
            return new URLSpan[0];
        }
    }

    /**
     * Sets the color of the hint text.
     *
     * @attr ref android.R.styleable#TextView_textColorHint
     */
    @android.view.RemotableViewMethod
    public final void setHintTextColor(int color) {
        mHintTextColor = ColorStateList.valueOf(color);
        updateTextColors();
    }

    /**
     * Sets the color of the hint text.
     *
     * @attr ref android.R.styleable#TextView_textColorHint
     */
    public final void setHintTextColor(ColorStateList colors) {
        mHintTextColor = colors;
        updateTextColors();
    }

    /**
     * <p>Return the color used to paint the hint text.</p>
     *
     * @return Returns the list of hint text colors.
     */
    public final ColorStateList getHintTextColors() {
        return mHintTextColor;
    }

    /**
     * <p>Return the current color selected to paint the hint text.</p>
     *
     * @return Returns the current hint text color.
     */
    public final int getCurrentHintTextColor() {
        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
    }

    /**
     * Sets the color of links in the text.
     *
     * @attr ref android.R.styleable#TextView_textColorLink
     */
    @android.view.RemotableViewMethod
    public final void setLinkTextColor(int color) {
        mLinkTextColor = ColorStateList.valueOf(color);
        updateTextColors();
    }

    /**
     * Sets the color of links in the text.
     *
     * @attr ref android.R.styleable#TextView_textColorLink
     */
    public final void setLinkTextColor(ColorStateList colors) {
        mLinkTextColor = colors;
        updateTextColors();
    }

    /**
     * <p>Returns the color used to paint links in the text.</p>
     *
     * @return Returns the list of link text colors.
     */
    public final ColorStateList getLinkTextColors() {
        return mLinkTextColor;
    }

    /**
     * Sets the horizontal alignment of the text and the
     * vertical gravity that will be used when there is extra space
     * in the TextView beyond what is required for the text itself.
     *
     * @see android.view.Gravity
     * @attr ref android.R.styleable#TextView_gravity
     */
    public void setGravity(int gravity) {
        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
            gravity |= Gravity.START;
        }
        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
            gravity |= Gravity.TOP;
        }

        boolean newLayout = false;

        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
            newLayout = true;
        }

        if (gravity != mGravity) {
            invalidate();
        }

        mGravity = gravity;

        if (mLayout != null && newLayout) {
            // XXX this is heavy-handed because no actual content changes.
            int want = mLayout.getWidth();
            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();

            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
                          mRight - mLeft - getCompoundPaddingLeft() -
                          getCompoundPaddingRight(), true);
        }
    }

    /**
     * Returns the horizontal and vertical alignment of this TextView.
     *
     * @see android.view.Gravity
     * @attr ref android.R.styleable#TextView_gravity
     */
    public int getGravity() {
        return mGravity;
    }

    /**
     * @return the flags on the Paint being used to display the text.
     * @see Paint#getFlags
     */
    public int getPaintFlags() {
        return mTextPaint.getFlags();
    }

    /**
     * Sets flags on the Paint being used to display the text and
     * reflows the text if they are different from the old flags.
     * @see Paint#setFlags
     */
    @android.view.RemotableViewMethod
    public void setPaintFlags(int flags) {
        if (mTextPaint.getFlags() != flags) {
            mTextPaint.setFlags(flags);

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * Sets whether the text should be allowed to be wider than the
     * View is.  If false, it will be wrapped to the width of the View.
     *
     * @attr ref android.R.styleable#TextView_scrollHorizontally
     */
    public void setHorizontallyScrolling(boolean whether) {
        if (mHorizontallyScrolling != whether) {
            mHorizontallyScrolling = whether;

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * Makes the TextView at least this many lines tall.
     *
     * Setting this value overrides any other (minimum) height setting. A single line TextView will
     * set this value to 1.
     *
     * @attr ref android.R.styleable#TextView_minLines
     */
    @android.view.RemotableViewMethod
    public void setMinLines(int minlines) {
        mMinimum = minlines;
        mMinMode = LINES;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at least this many pixels tall.
     *
     * Setting this value overrides any other (minimum) number of lines setting.
     *
     * @attr ref android.R.styleable#TextView_minHeight
     */
    @android.view.RemotableViewMethod
    public void setMinHeight(int minHeight) {
        mMinimum = minHeight;
        mMinMode = PIXELS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at most this many lines tall.
     *
     * Setting this value overrides any other (maximum) height setting.
     *
     * @attr ref android.R.styleable#TextView_maxLines
     */
    @android.view.RemotableViewMethod
    public void setMaxLines(int maxlines) {
        mMaximum = maxlines;
        mMaxMode = LINES;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
     * {@link #setMaxLines(int)} method.
     *
     * Setting this value overrides any other (maximum) number of lines setting.
     *
     * @attr ref android.R.styleable#TextView_maxHeight
     */
    @android.view.RemotableViewMethod
    public void setMaxHeight(int maxHeight) {
        mMaximum = maxHeight;
        mMaxMode = PIXELS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView exactly this many lines tall.
     *
     * Note that setting this value overrides any other (minimum / maximum) number of lines or
     * height setting. A single line TextView will set this value to 1.
     *
     * @attr ref android.R.styleable#TextView_lines
     */
    @android.view.RemotableViewMethod
    public void setLines(int lines) {
        mMaximum = mMinimum = lines;
        mMaxMode = mMinMode = LINES;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView exactly this many pixels tall.
     * You could do the same thing by specifying this number in the
     * LayoutParams.
     *
     * Note that setting this value overrides any other (minimum / maximum) number of lines or
     * height setting.
     *
     * @attr ref android.R.styleable#TextView_height
     */
    @android.view.RemotableViewMethod
    public void setHeight(int pixels) {
        mMaximum = mMinimum = pixels;
        mMaxMode = mMinMode = PIXELS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at least this many ems wide
     *
     * @attr ref android.R.styleable#TextView_minEms
     */
    @android.view.RemotableViewMethod
    public void setMinEms(int minems) {
        mMinWidth = minems;
        mMinWidthMode = EMS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at least this many pixels wide
     *
     * @attr ref android.R.styleable#TextView_minWidth
     */
    @android.view.RemotableViewMethod
    public void setMinWidth(int minpixels) {
        mMinWidth = minpixels;
        mMinWidthMode = PIXELS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at most this many ems wide
     *
     * @attr ref android.R.styleable#TextView_maxEms
     */
    @android.view.RemotableViewMethod
    public void setMaxEms(int maxems) {
        mMaxWidth = maxems;
        mMaxWidthMode = EMS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView at most this many pixels wide
     *
     * @attr ref android.R.styleable#TextView_maxWidth
     */
    @android.view.RemotableViewMethod
    public void setMaxWidth(int maxpixels) {
        mMaxWidth = maxpixels;
        mMaxWidthMode = PIXELS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView exactly this many ems wide
     *
     * @attr ref android.R.styleable#TextView_ems
     */
    @android.view.RemotableViewMethod
    public void setEms(int ems) {
        mMaxWidth = mMinWidth = ems;
        mMaxWidthMode = mMinWidthMode = EMS;

        requestLayout();
        invalidate();
    }

    /**
     * Makes the TextView exactly this many pixels wide.
     * You could do the same thing by specifying this number in the
     * LayoutParams.
     *
     * @attr ref android.R.styleable#TextView_width
     */
    @android.view.RemotableViewMethod
    public void setWidth(int pixels) {
        mMaxWidth = mMinWidth = pixels;
        mMaxWidthMode = mMinWidthMode = PIXELS;

        requestLayout();
        invalidate();
    }


    /**
     * Sets line spacing for this TextView.  Each line will have its height
     * multiplied by <code>mult</code> and have <code>add</code> added to it.
     *
     * @attr ref android.R.styleable#TextView_lineSpacingExtra
     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
     */
    public void setLineSpacing(float add, float mult) {
        if (mSpacingAdd != add || mSpacingMult != mult) {
            mSpacingAdd = add;
            mSpacingMult = mult;

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * Convenience method: Append the specified text to the TextView's
     * display buffer, upgrading it to BufferType.EDITABLE if it was
     * not already editable.
     */
    public final void append(CharSequence text) {
        append(text, 0, text.length());
    }

    /**
     * Convenience method: Append the specified text slice to the TextView's
     * display buffer, upgrading it to BufferType.EDITABLE if it was
     * not already editable.
     */
    public void append(CharSequence text, int start, int end) {
        if (!(mText instanceof Editable)) {
            setText(mText, BufferType.EDITABLE);
        }

        ((Editable) mText).append(text, start, end);
    }

    private void updateTextColors() {
        boolean inval = false;
        int color = mTextColor.getColorForState(getDrawableState(), 0);
        if (color != mCurTextColor) {
            mCurTextColor = color;
            inval = true;
        }
        if (mLinkTextColor != null) {
            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
            if (color != mTextPaint.linkColor) {
                mTextPaint.linkColor = color;
                inval = true;
            }
        }
        if (mHintTextColor != null) {
            color = mHintTextColor.getColorForState(getDrawableState(), 0);
            if (color != mCurHintTextColor && mText.length() == 0) {
                mCurHintTextColor = color;
                inval = true;
            }
        }
        if (inval) {
            invalidate();
        }
    }

    @Override
    protected void drawableStateChanged() {
        super.drawableStateChanged();
        if (mTextColor != null && mTextColor.isStateful()
                || (mHintTextColor != null && mHintTextColor.isStateful())
                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
            updateTextColors();
        }

        final Drawables dr = mDrawables;
        if (dr != null) {
            int[] state = getDrawableState();
            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
                dr.mDrawableTop.setState(state);
            }
            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
                dr.mDrawableBottom.setState(state);
            }
            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
                dr.mDrawableLeft.setState(state);
            }
            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
                dr.mDrawableRight.setState(state);
            }
            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
                dr.mDrawableStart.setState(state);
            }
            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
                dr.mDrawableEnd.setState(state);
            }
        }
    }

    /**
     * User interface state that is stored by TextView for implementing
     * {@link View#onSaveInstanceState}.
     */
    public static class SavedState extends BaseSavedState {
        int selStart;
        int selEnd;
        CharSequence text;
        boolean frozenWithFocus;
        CharSequence error;

        SavedState(Parcelable superState) {
            super(superState);
        }

        @Override
        public void writeToParcel(Parcel out, int flags) {
            super.writeToParcel(out, flags);
            out.writeInt(selStart);
            out.writeInt(selEnd);
            out.writeInt(frozenWithFocus ? 1 : 0);
            TextUtils.writeToParcel(text, out, flags);

            if (error == null) {
                out.writeInt(0);
            } else {
                out.writeInt(1);
                TextUtils.writeToParcel(error, out, flags);
            }
        }

        @Override
        public String toString() {
            String str = "TextView.SavedState{"
                    + Integer.toHexString(System.identityHashCode(this))
                    + " start=" + selStart + " end=" + selEnd;
            if (text != null) {
                str += " text=" + text;
            }
            return str + "}";
        }

        @SuppressWarnings("hiding")
        public static final Parcelable.Creator<SavedState> CREATOR
                = new Parcelable.Creator<SavedState>() {
            public SavedState createFromParcel(Parcel in) {
                return new SavedState(in);
            }

            public SavedState[] newArray(int size) {
                return new SavedState[size];
            }
        };

        private SavedState(Parcel in) {
            super(in);
            selStart = in.readInt();
            selEnd = in.readInt();
            frozenWithFocus = (in.readInt() != 0);
            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);

            if (in.readInt() != 0) {
                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
            }
        }
    }

    @Override
    public Parcelable onSaveInstanceState() {
        Parcelable superState = super.onSaveInstanceState();

        // Save state if we are forced to
        boolean save = mFreezesText;
        int start = 0;
        int end = 0;

        if (mText != null) {
            start = getSelectionStart();
            end = getSelectionEnd();
            if (start >= 0 || end >= 0) {
                // Or save state if there is a selection
                save = true;
            }
        }

        if (save) {
            SavedState ss = new SavedState(superState);
            // XXX Should also save the current scroll position!
            ss.selStart = start;
            ss.selEnd = end;

            if (mText instanceof Spanned) {
                /*
                 * Calling setText() strips off any ChangeWatchers;
                 * strip them now to avoid leaking references.
                 * But do it to a copy so that if there are any
                 * further changes to the text of this view, it
                 * won't get into an inconsistent state.
                 */

                Spannable sp = new SpannableString(mText);

                for (ChangeWatcher cw :
                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
                    sp.removeSpan(cw);
                }

                sp.removeSpan(mSuggestionRangeSpan);

                ss.text = sp;
            } else {
                ss.text = mText.toString();
            }

            if (isFocused() && start >= 0 && end >= 0) {
                ss.frozenWithFocus = true;
            }

            ss.error = mError;

            return ss;
        }

        return superState;
    }

    @Override
    public void onRestoreInstanceState(Parcelable state) {
        if (!(state instanceof SavedState)) {
            super.onRestoreInstanceState(state);
            return;
        }

        SavedState ss = (SavedState)state;
        super.onRestoreInstanceState(ss.getSuperState());

        // XXX restore buffer type too, as well as lots of other stuff
        if (ss.text != null) {
            setText(ss.text);
        }

        if (ss.selStart >= 0 && ss.selEnd >= 0) {
            if (mText instanceof Spannable) {
                int len = mText.length();

                if (ss.selStart > len || ss.selEnd > len) {
                    String restored = "";

                    if (ss.text != null) {
                        restored = "(restored) ";
                    }

                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
                          "/" + ss.selEnd + " out of range for " + restored +
                          "text " + mText);
                } else {
                    Selection.setSelection((Spannable) mText, ss.selStart,
                                           ss.selEnd);

                    if (ss.frozenWithFocus) {
                        mFrozenWithFocus = true;
                    }
                }
            }
        }

        if (ss.error != null) {
            final CharSequence error = ss.error;
            // Display the error later, after the first layout pass
            post(new Runnable() {
                public void run() {
                    setError(error);
                }
            });
        }
    }

    /**
     * Control whether this text view saves its entire text contents when
     * freezing to an icicle, in addition to dynamic state such as cursor
     * position.  By default this is false, not saving the text.  Set to true
     * if the text in the text view is not being saved somewhere else in
     * persistent storage (such as in a content provider) so that if the
     * view is later thawed the user will not lose their data.
     *
     * @param freezesText Controls whether a frozen icicle should include the
     * entire text data: true to include it, false to not.
     *
     * @attr ref android.R.styleable#TextView_freezesText
     */
    @android.view.RemotableViewMethod
    public void setFreezesText(boolean freezesText) {
        mFreezesText = freezesText;
    }

    /**
     * Return whether this text view is including its entire text contents
     * in frozen icicles.
     *
     * @return Returns true if text is included, false if it isn't.
     *
     * @see #setFreezesText
     */
    public boolean getFreezesText() {
        return mFreezesText;
    }

    ///////////////////////////////////////////////////////////////////////////

    /**
     * Sets the Factory used to create new Editables.
     */
    public final void setEditableFactory(Editable.Factory factory) {
        mEditableFactory = factory;
        setText(mText);
    }

    /**
     * Sets the Factory used to create new Spannables.
     */
    public final void setSpannableFactory(Spannable.Factory factory) {
        mSpannableFactory = factory;
        setText(mText);
    }

    /**
     * Sets the string value of the TextView. TextView <em>does not</em> accept
     * HTML-like formatting, which you can do with text strings in XML resource files.
     * To style your strings, attach android.text.style.* objects to a
     * {@link android.text.SpannableString SpannableString}, or see the
     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
     * Available Resource Types</a> documentation for an example of setting
     * formatted text in the XML resource file.
     *
     * @attr ref android.R.styleable#TextView_text
     */
    @android.view.RemotableViewMethod
    public final void setText(CharSequence text) {
        setText(text, mBufferType);
    }

    /**
     * Like {@link #setText(CharSequence)},
     * except that the cursor position (if any) is retained in the new text.
     *
     * @param text The new text to place in the text view.
     *
     * @see #setText(CharSequence)
     */
    @android.view.RemotableViewMethod
    public final void setTextKeepState(CharSequence text) {
        setTextKeepState(text, mBufferType);
    }

    /**
     * Sets the text that this TextView is to display (see
     * {@link #setText(CharSequence)}) and also sets whether it is stored
     * in a styleable/spannable buffer and whether it is editable.
     *
     * @attr ref android.R.styleable#TextView_text
     * @attr ref android.R.styleable#TextView_bufferType
     */
    public void setText(CharSequence text, BufferType type) {
        setText(text, type, true, 0);

        if (mCharWrapper != null) {
            mCharWrapper.mChars = null;
        }
    }

    private void setText(CharSequence text, BufferType type,
                         boolean notifyBefore, int oldlen) {
        if (text == null) {
            text = "";
        }

        // If suggestions are not enabled, remove the suggestion spans from the text
        if (!isSuggestionsEnabled()) {
            text = removeSuggestionSpans(text);
        }

        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);

        if (text instanceof Spanned &&
            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
                setHorizontalFadingEdgeEnabled(true);
                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
            } else {
                setHorizontalFadingEdgeEnabled(false);
                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
            }
            setEllipsize(TextUtils.TruncateAt.MARQUEE);
        }

        int n = mFilters.length;
        for (int i = 0; i < n; i++) {
            CharSequence out = mFilters[i].filter(text, 0, text.length(),
                                                  EMPTY_SPANNED, 0, 0);
            if (out != null) {
                text = out;
            }
        }

        if (notifyBefore) {
            if (mText != null) {
                oldlen = mText.length();
                sendBeforeTextChanged(mText, 0, oldlen, text.length());
            } else {
                sendBeforeTextChanged("", 0, 0, text.length());
            }
        }

        boolean needEditableForNotification = false;
        boolean startSpellCheck = false;

        if (mListeners != null && mListeners.size() != 0) {
            needEditableForNotification = true;
        }

        if (type == BufferType.EDITABLE || mInput != null || needEditableForNotification) {
            Editable t = mEditableFactory.newEditable(text);
            text = t;
            setFilters(t, mFilters);
            InputMethodManager imm = InputMethodManager.peekInstance();
            if (imm != null) imm.restartInput(this);
            startSpellCheck = true;
        } else if (type == BufferType.SPANNABLE || mMovement != null) {
            text = mSpannableFactory.newSpannable(text);
        } else if (!(text instanceof CharWrapper)) {
            text = TextUtils.stringOrSpannedString(text);
        }

        if (mAutoLinkMask != 0) {
            Spannable s2;

            if (type == BufferType.EDITABLE || text instanceof Spannable) {
                s2 = (Spannable) text;
            } else {
                s2 = mSpannableFactory.newSpannable(text);
            }

            if (Linkify.addLinks(s2, mAutoLinkMask)) {
                text = s2;
                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;

                /*
                 * We must go ahead and set the text before changing the
                 * movement method, because setMovementMethod() may call
                 * setText() again to try to upgrade the buffer type.
                 */
                mText = text;

                // Do not change the movement method for text that support text selection as it
                // would prevent an arbitrary cursor displacement.
                if (mLinksClickable && !textCanBeSelected()) {
                    setMovementMethod(LinkMovementMethod.getInstance());
                }
            }
        }

        mBufferType = type;
        mText = text;

        if (mTransformation == null) {
            mTransformed = text;
        } else {
            mTransformed = mTransformation.getTransformation(text, this);
        }

        final int textLength = text.length();

        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
            Spannable sp = (Spannable) text;

            // Remove any ChangeWatchers that might have come
            // from other TextViews.
            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
            final int count = watchers.length;
            for (int i = 0; i < count; i++)
                sp.removeSpan(watchers[i]);

            if (mChangeWatcher == null)
                mChangeWatcher = new ChangeWatcher();

            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));

            if (mInput != null) {
                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
            }

            if (mTransformation != null) {
                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
            }

            if (mMovement != null) {
                mMovement.initialize(this, (Spannable) text);

                /*
                 * Initializing the movement method will have set the
                 * selection, so reset mSelectionMoved to keep that from
                 * interfering with the normal on-focus selection-setting.
                 */
                mSelectionMoved = false;
            }
        }

        if (mLayout != null) {
            checkForRelayout();
        }

        sendOnTextChanged(text, 0, oldlen, textLength);
        onTextChanged(text, 0, oldlen, textLength);

        if (startSpellCheck) {
            updateSpellCheckSpans(0, textLength);
        }

        if (needEditableForNotification) {
            sendAfterTextChanged((Editable) text);
        }

        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
        prepareCursorControllers();
    }

    /**
     * Sets the TextView to display the specified slice of the specified
     * char array.  You must promise that you will not change the contents
     * of the array except for right before another call to setText(),
     * since the TextView has no way to know that the text
     * has changed and that it needs to invalidate and re-layout.
     */
    public final void setText(char[] text, int start, int len) {
        int oldlen = 0;

        if (start < 0 || len < 0 || start + len > text.length) {
            throw new IndexOutOfBoundsException(start + ", " + len);
        }

        /*
         * We must do the before-notification here ourselves because if
         * the old text is a CharWrapper we destroy it before calling
         * into the normal path.
         */
        if (mText != null) {
            oldlen = mText.length();
            sendBeforeTextChanged(mText, 0, oldlen, len);
        } else {
            sendBeforeTextChanged("", 0, 0, len);
        }

        if (mCharWrapper == null) {
            mCharWrapper = new CharWrapper(text, start, len);
        } else {
            mCharWrapper.set(text, start, len);
        }

        setText(mCharWrapper, mBufferType, false, oldlen);
    }

    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
        private char[] mChars;
        private int mStart, mLength;

        public CharWrapper(char[] chars, int start, int len) {
            mChars = chars;
            mStart = start;
            mLength = len;
        }

        /* package */ void set(char[] chars, int start, int len) {
            mChars = chars;
            mStart = start;
            mLength = len;
        }

        public int length() {
            return mLength;
        }

        public char charAt(int off) {
            return mChars[off + mStart];
        }

        @Override
        public String toString() {
            return new String(mChars, mStart, mLength);
        }

        public CharSequence subSequence(int start, int end) {
            if (start < 0 || end < 0 || start > mLength || end > mLength) {
                throw new IndexOutOfBoundsException(start + ", " + end);
            }

            return new String(mChars, start + mStart, end - start);
        }

        public void getChars(int start, int end, char[] buf, int off) {
            if (start < 0 || end < 0 || start > mLength || end > mLength) {
                throw new IndexOutOfBoundsException(start + ", " + end);
            }

            System.arraycopy(mChars, start + mStart, buf, off, end - start);
        }

        public void drawText(Canvas c, int start, int end,
                             float x, float y, Paint p) {
            c.drawText(mChars, start + mStart, end - start, x, y, p);
        }

        public void drawTextRun(Canvas c, int start, int end,
                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
            int count = end - start;
            int contextCount = contextEnd - contextStart;
            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
                    contextCount, x, y, flags, p);
        }

        public float measureText(int start, int end, Paint p) {
            return p.measureText(mChars, start + mStart, end - start);
        }

        public int getTextWidths(int start, int end, float[] widths, Paint p) {
            return p.getTextWidths(mChars, start + mStart, end - start, widths);
        }

        public float getTextRunAdvances(int start, int end, int contextStart,
                int contextEnd, int flags, float[] advances, int advancesIndex,
                Paint p) {
            int count = end - start;
            int contextCount = contextEnd - contextStart;
            return p.getTextRunAdvances(mChars, start + mStart, count,
                    contextStart + mStart, contextCount, flags, advances,
                    advancesIndex);
        }

        public float getTextRunAdvances(int start, int end, int contextStart,
                int contextEnd, int flags, float[] advances, int advancesIndex,
                Paint p, int reserved) {
            int count = end - start;
            int contextCount = contextEnd - contextStart;
            return p.getTextRunAdvances(mChars, start + mStart, count,
                    contextStart + mStart, contextCount, flags, advances,
                    advancesIndex, reserved);
        }

        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
                int offset, int cursorOpt, Paint p) {
            int contextCount = contextEnd - contextStart;
            return p.getTextRunCursor(mChars, contextStart + mStart,
                    contextCount, flags, offset + mStart, cursorOpt);
        }
    }

    /**
     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
     * except that the cursor position (if any) is retained in the new text.
     *
     * @see #setText(CharSequence, android.widget.TextView.BufferType)
     */
    public final void setTextKeepState(CharSequence text, BufferType type) {
        int start = getSelectionStart();
        int end = getSelectionEnd();
        int len = text.length();

        setText(text, type);

        if (start >= 0 || end >= 0) {
            if (mText instanceof Spannable) {
                Selection.setSelection((Spannable) mText,
                                       Math.max(0, Math.min(start, len)),
                                       Math.max(0, Math.min(end, len)));
            }
        }
    }

    @android.view.RemotableViewMethod
    public final void setText(int resid) {
        setText(getContext().getResources().getText(resid));
    }

    public final void setText(int resid, BufferType type) {
        setText(getContext().getResources().getText(resid), type);
    }

    /**
     * Sets the text to be displayed when the text of the TextView is empty.
     * Null means to use the normal empty text. The hint does not currently
     * participate in determining the size of the view.
     *
     * @attr ref android.R.styleable#TextView_hint
     */
    @android.view.RemotableViewMethod
    public final void setHint(CharSequence hint) {
        mHint = TextUtils.stringOrSpannedString(hint);

        if (mLayout != null) {
            checkForRelayout();
        }

        if (mText.length() == 0) {
            invalidate();
        }
    }

    /**
     * Sets the text to be displayed when the text of the TextView is empty,
     * from a resource.
     *
     * @attr ref android.R.styleable#TextView_hint
     */
    @android.view.RemotableViewMethod
    public final void setHint(int resid) {
        setHint(getContext().getResources().getText(resid));
    }

    /**
     * Returns the hint that is displayed when the text of the TextView
     * is empty.
     *
     * @attr ref android.R.styleable#TextView_hint
     */
    @ViewDebug.CapturedViewProperty
    public CharSequence getHint() {
        return mHint;
    }

    private static boolean isMultilineInputType(int type) {
        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
    }

    /**
     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
     * then a soft keyboard will not be displayed for this text view.
     *
     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
     * type.
     *
     * @see #getInputType()
     * @see #setRawInputType(int)
     * @see android.text.InputType
     * @attr ref android.R.styleable#TextView_inputType
     */
    public void setInputType(int type) {
        final boolean wasPassword = isPasswordInputType(mInputType);
        final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType);
        setInputType(type, false);
        final boolean isPassword = isPasswordInputType(type);
        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
        boolean forceUpdate = false;
        if (isPassword) {
            setTransformationMethod(PasswordTransformationMethod.getInstance());
            setTypefaceByIndex(MONOSPACE, 0);
        } else if (isVisiblePassword) {
            if (mTransformation == PasswordTransformationMethod.getInstance()) {
                forceUpdate = true;
            }
            setTypefaceByIndex(MONOSPACE, 0);
        } else if (wasPassword || wasVisiblePassword) {
            // not in password mode, clean up typeface and transformation
            setTypefaceByIndex(-1, -1);
            if (mTransformation == PasswordTransformationMethod.getInstance()) {
                forceUpdate = true;
            }
        }
        
        boolean singleLine = !isMultilineInputType(type);
        
        // We need to update the single line mode if it has changed or we
        // were previously in password mode.
        if (mSingleLine != singleLine || forceUpdate) {
            // Change single line mode, but only change the transformation if
            // we are not in password mode.
            applySingleLine(singleLine, !isPassword, true);
        }
        
        if (!isSuggestionsEnabled()) {
            mText = removeSuggestionSpans(mText);
        }

        InputMethodManager imm = InputMethodManager.peekInstance();
        if (imm != null) imm.restartInput(this);
    }

    /**
     * It would be better to rely on the input type for everything. A password inputType should have
     * a password transformation. We should hence use isPasswordInputType instead of this method.
     *
     * We should:
     * - Call setInputType in setKeyListener instead of changing the input type directly (which
     * would install the correct transformation).
     * - Refuse the installation of a non-password transformation in setTransformation if the input
     * type is password.
     *
     * However, this is like this for legacy reasons and we cannot break existing apps. This method
     * is useful since it matches what the user can see (obfuscated text or not).
     *
     * @return true if the current transformation method is of the password type.
     */
    private boolean hasPasswordTransformationMethod() {
        return mTransformation instanceof PasswordTransformationMethod;
    }

    private static boolean isPasswordInputType(int inputType) {
        final int variation =
                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
        return variation
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
                || variation
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
                || variation
                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
    }

    private static boolean isVisiblePasswordInputType(int inputType) {
        final int variation =
                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
        return variation
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
    }

    /**
     * Directly change the content type integer of the text view, without
     * modifying any other state.
     * @see #setInputType(int)
     * @see android.text.InputType
     * @attr ref android.R.styleable#TextView_inputType
     */
    public void setRawInputType(int type) {
        mInputType = type;
    }

    private void setInputType(int type, boolean direct) {
        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
        KeyListener input;
        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
            TextKeyListener.Capitalize cap;
            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
                cap = TextKeyListener.Capitalize.CHARACTERS;
            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
                cap = TextKeyListener.Capitalize.WORDS;
            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
                cap = TextKeyListener.Capitalize.SENTENCES;
            } else {
                cap = TextKeyListener.Capitalize.NONE;
            }
            input = TextKeyListener.getInstance(autotext, cap);
        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
            input = DigitsKeyListener.getInstance(
                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
                    input = DateKeyListener.getInstance();
                    break;
                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
                    input = TimeKeyListener.getInstance();
                    break;
                default:
                    input = DateTimeKeyListener.getInstance();
                    break;
            }
        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
            input = DialerKeyListener.getInstance();
        } else {
            input = TextKeyListener.getInstance();
        }
        setRawInputType(type);
        if (direct) mInput = input;
        else {
            setKeyListenerOnly(input);
        }
    }

    /**
     * Get the type of the content.
     *
     * @see #setInputType(int)
     * @see android.text.InputType
     */
    public int getInputType() {
        return mInputType;
    }

    /**
     * Change the editor type integer associated with the text view, which
     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
     * has focus.
     * @see #getImeOptions
     * @see android.view.inputmethod.EditorInfo
     * @attr ref android.R.styleable#TextView_imeOptions
     */
    public void setImeOptions(int imeOptions) {
        if (mInputContentType == null) {
            mInputContentType = new InputContentType();
        }
        mInputContentType.imeOptions = imeOptions;
    }

    /**
     * Get the type of the IME editor.
     *
     * @see #setImeOptions(int)
     * @see android.view.inputmethod.EditorInfo
     */
    public int getImeOptions() {
        return mInputContentType != null
                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
    }

    /**
     * Change the custom IME action associated with the text view, which
     * will be reported to an IME with {@link EditorInfo#actionLabel}
     * and {@link EditorInfo#actionId} when it has focus.
     * @see #getImeActionLabel
     * @see #getImeActionId
     * @see android.view.inputmethod.EditorInfo
     * @attr ref android.R.styleable#TextView_imeActionLabel
     * @attr ref android.R.styleable#TextView_imeActionId
     */
    public void setImeActionLabel(CharSequence label, int actionId) {
        if (mInputContentType == null) {
            mInputContentType = new InputContentType();
        }
        mInputContentType.imeActionLabel = label;
        mInputContentType.imeActionId = actionId;
    }

    /**
     * Get the IME action label previous set with {@link #setImeActionLabel}.
     *
     * @see #setImeActionLabel
     * @see android.view.inputmethod.EditorInfo
     */
    public CharSequence getImeActionLabel() {
        return mInputContentType != null
                ? mInputContentType.imeActionLabel : null;
    }

    /**
     * Get the IME action ID previous set with {@link #setImeActionLabel}.
     *
     * @see #setImeActionLabel
     * @see android.view.inputmethod.EditorInfo
     */
    public int getImeActionId() {
        return mInputContentType != null
                ? mInputContentType.imeActionId : 0;
    }

    /**
     * Set a special listener to be called when an action is performed
     * on the text view.  This will be called when the enter key is pressed,
     * or when an action supplied to the IME is selected by the user.  Setting
     * this means that the normal hard key event will not insert a newline
     * into the text view, even if it is multi-line; holding down the ALT
     * modifier will, however, allow the user to insert a newline character.
     */
    public void setOnEditorActionListener(OnEditorActionListener l) {
        if (mInputContentType == null) {
            mInputContentType = new InputContentType();
        }
        mInputContentType.onEditorActionListener = l;
    }
    
    /**
     * Called when an attached input method calls
     * {@link InputConnection#performEditorAction(int)
     * InputConnection.performEditorAction()}
     * for this text view.  The default implementation will call your action
     * listener supplied to {@link #setOnEditorActionListener}, or perform
     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
     * EditorInfo.IME_ACTION_DONE}.
     * 
     * <p>For backwards compatibility, if no IME options have been set and the
     * text view would not normally advance focus on enter, then
     * the NEXT and DONE actions received here will be turned into an enter
     * key down/up pair to go through the normal key handling.
     * 
     * @param actionCode The code of the action being performed.
     * 
     * @see #setOnEditorActionListener
     */
    public void onEditorAction(int actionCode) {
        final InputContentType ict = mInputContentType;
        if (ict != null) {
            if (ict.onEditorActionListener != null) {
                if (ict.onEditorActionListener.onEditorAction(this,
                        actionCode, null)) {
                    return;
                }
            }
            
            // This is the handling for some default action.
            // Note that for backwards compatibility we don't do this
            // default handling if explicit ime options have not been given,
            // instead turning this into the normal enter key codes that an
            // app may be expecting.
            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
                View v = focusSearch(FOCUS_FORWARD);
                if (v != null) {
                    if (!v.requestFocus(FOCUS_FORWARD)) {
                        throw new IllegalStateException("focus search returned a view " +
                                "that wasn't able to take focus!");
                    }
                }
                return;

            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
                View v = focusSearch(FOCUS_BACKWARD);
                if (v != null) {
                    if (!v.requestFocus(FOCUS_BACKWARD)) {
                        throw new IllegalStateException("focus search returned a view " +
                                "that wasn't able to take focus!");
                    }
                }
                return;

            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
                InputMethodManager imm = InputMethodManager.peekInstance();
                if (imm != null && imm.isActive(this)) {
                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
                }
                clearFocus();
                return;
            }
        }

        Handler h = getHandler();
        if (h != null) {
            long eventTime = SystemClock.uptimeMillis();
            h.sendMessage(h.obtainMessage(ViewRootImpl.DISPATCH_KEY_FROM_IME,
                    new KeyEvent(eventTime, eventTime,
                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
                    | KeyEvent.FLAG_EDITOR_ACTION)));
            h.sendMessage(h.obtainMessage(ViewRootImpl.DISPATCH_KEY_FROM_IME,
                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
                    | KeyEvent.FLAG_EDITOR_ACTION)));
        }
    }
    
    /**
     * Set the private content type of the text, which is the
     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
     * field that will be filled in when creating an input connection.
     *
     * @see #getPrivateImeOptions()
     * @see EditorInfo#privateImeOptions
     * @attr ref android.R.styleable#TextView_privateImeOptions
     */
    public void setPrivateImeOptions(String type) {
        if (mInputContentType == null) mInputContentType = new InputContentType();
        mInputContentType.privateImeOptions = type;
    }

    /**
     * Get the private type of the content.
     *
     * @see #setPrivateImeOptions(String)
     * @see EditorInfo#privateImeOptions
     */
    public String getPrivateImeOptions() {
        return mInputContentType != null
                ? mInputContentType.privateImeOptions : null;
    }

    /**
     * Set the extra input data of the text, which is the
     * {@link EditorInfo#extras TextBoxAttribute.extras}
     * Bundle that will be filled in when creating an input connection.  The
     * given integer is the resource ID of an XML resource holding an
     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
     *
     * @see #getInputExtras(boolean) 
     * @see EditorInfo#extras
     * @attr ref android.R.styleable#TextView_editorExtras
     */
    public void setInputExtras(int xmlResId)
            throws XmlPullParserException, IOException {
        XmlResourceParser parser = getResources().getXml(xmlResId);
        if (mInputContentType == null) mInputContentType = new InputContentType();
        mInputContentType.extras = new Bundle();
        getResources().parseBundleExtras(parser, mInputContentType.extras);
    }

    /**
     * Retrieve the input extras currently associated with the text view, which
     * can be viewed as well as modified.
     *
     * @param create If true, the extras will be created if they don't already
     * exist.  Otherwise, null will be returned if none have been created.
     * @see #setInputExtras(int)
     * @see EditorInfo#extras
     * @attr ref android.R.styleable#TextView_editorExtras
     */
    public Bundle getInputExtras(boolean create) {
        if (mInputContentType == null) {
            if (!create) return null;
            mInputContentType = new InputContentType();
        }
        if (mInputContentType.extras == null) {
            if (!create) return null;
            mInputContentType.extras = new Bundle();
        }
        return mInputContentType.extras;
    }

    /**
     * Returns the error message that was set to be displayed with
     * {@link #setError}, or <code>null</code> if no error was set
     * or if it the error was cleared by the widget after user input.
     */
    public CharSequence getError() {
        return mError;
    }

    /**
     * Sets the right-hand compound drawable of the TextView to the "error"
     * icon and sets an error message that will be displayed in a popup when
     * the TextView has focus.  The icon and error message will be reset to
     * null when any key events cause changes to the TextView's text.  If the
     * <code>error</code> is <code>null</code>, the error message and icon
     * will be cleared.
     */
    @android.view.RemotableViewMethod
    public void setError(CharSequence error) {
        if (error == null) {
            setError(null, null);
        } else {
            Drawable dr = getContext().getResources().
                getDrawable(com.android.internal.R.drawable.indicator_input_error);

            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
            setError(error, dr);
        }
    }

    /**
     * Sets the right-hand compound drawable of the TextView to the specified
     * icon and sets an error message that will be displayed in a popup when
     * the TextView has focus.  The icon and error message will be reset to
     * null when any key events cause changes to the TextView's text.  The
     * drawable must already have had {@link Drawable#setBounds} set on it.
     * If the <code>error</code> is <code>null</code>, the error message will
     * be cleared (and you should provide a <code>null</code> icon as well).
     */
    public void setError(CharSequence error, Drawable icon) {
        error = TextUtils.stringOrSpannedString(error);

        mError = error;
        mErrorWasChanged = true;
        final Drawables dr = mDrawables;
        if (dr != null) {
            switch (getResolvedLayoutDirection()) {
                default:
                case LAYOUT_DIRECTION_LTR:
                    setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon,
                            dr.mDrawableBottom);
                    break;
                case LAYOUT_DIRECTION_RTL:
                    setCompoundDrawables(icon, dr.mDrawableTop, dr.mDrawableRight,
                            dr.mDrawableBottom);
                    break;
            }
        } else {
            setCompoundDrawables(null, null, icon, null);
        }

        if (error == null) {
            if (mPopup != null) {
                if (mPopup.isShowing()) {
                    mPopup.dismiss();
                }

                mPopup = null;
            }
        } else {
            if (isFocused()) {
                showError();
            }
        }
    }

    private void showError() {
        if (getWindowToken() == null) {
            mShowErrorAfterAttach = true;
            return;
        }

        if (mPopup == null) {
            LayoutInflater inflater = LayoutInflater.from(getContext());
            final TextView err = (TextView) inflater.inflate(
                    com.android.internal.R.layout.textview_hint, null);

            final float scale = getResources().getDisplayMetrics().density;
            mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f));
            mPopup.setFocusable(false);
            // The user is entering text, so the input method is needed.  We
            // don't want the popup to be displayed on top of it.
            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
        }

        TextView tv = (TextView) mPopup.getContentView();
        chooseSize(mPopup, mError, tv);
        tv.setText(mError);

        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
        mPopup.fixDirection(mPopup.isAboveAnchor());
    }

    private static class ErrorPopup extends PopupWindow {
        private boolean mAbove = false;
        private final TextView mView;
        private int mPopupInlineErrorBackgroundId = 0;
        private int mPopupInlineErrorAboveBackgroundId = 0;

        ErrorPopup(TextView v, int width, int height) {
            super(v, width, height);
            mView = v;
            // Make sure the TextView has a background set as it will be used the first time it is
            // shown and positionned. Initialized with below background, which should have
            // dimensions identical to the above version for this to work (and is more likely).
            mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
                    com.android.internal.R.styleable.Theme_errorMessageBackground);
            mView.setBackgroundResource(mPopupInlineErrorBackgroundId);
        }

        void fixDirection(boolean above) {
            mAbove = above;

            if (above) {
                mPopupInlineErrorAboveBackgroundId =
                    getResourceId(mPopupInlineErrorAboveBackgroundId,
                            com.android.internal.R.styleable.Theme_errorMessageAboveBackground);
            } else {
                mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
                        com.android.internal.R.styleable.Theme_errorMessageBackground);
            }

            mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId :
                mPopupInlineErrorBackgroundId);
        }

        private int getResourceId(int currentId, int index) {
            if (currentId == 0) {
                TypedArray styledAttributes = mView.getContext().obtainStyledAttributes(
                        R.styleable.Theme);
                currentId = styledAttributes.getResourceId(index, 0);
                styledAttributes.recycle();
            }
            return currentId;
        }

        @Override
        public void update(int x, int y, int w, int h, boolean force) {
            super.update(x, y, w, h, force);

            boolean above = isAboveAnchor();
            if (above != mAbove) {
                fixDirection(above);
            }
        }
    }

    /**
     * Returns the Y offset to make the pointy top of the error point
     * at the middle of the error icon.
     */
    private int getErrorX() {
        /*
         * The "25" is the distance between the point and the right edge
         * of the background
         */
        final float scale = getResources().getDisplayMetrics().density;

        final Drawables dr = mDrawables;
        return getWidth() - mPopup.getWidth() - getPaddingRight() -
                (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
    }

    /**
     * Returns the Y offset to make the pointy top of the error point
     * at the bottom of the error icon.
     */
    private int getErrorY() {
        /*
         * Compound, not extended, because the icon is not clipped
         * if the text height is smaller.
         */
        final int compoundPaddingTop = getCompoundPaddingTop();
        int vspace = mBottom - mTop - getCompoundPaddingBottom() - compoundPaddingTop;

        final Drawables dr = mDrawables;
        int icontop = compoundPaddingTop +
                (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;

        /*
         * The "2" is the distance between the point and the top edge
         * of the background.
         */
        final float scale = getResources().getDisplayMetrics().density;
        return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - getHeight() -
                (int) (2 * scale + 0.5f);
    }

    private void hideError() {
        if (mPopup != null) {
            if (mPopup.isShowing()) {
                mPopup.dismiss();
            }
        }

        mShowErrorAfterAttach = false;
    }

    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
        int ht = tv.getPaddingTop() + tv.getPaddingBottom();

        int defaultWidthInPixels = getResources().getDimensionPixelSize(
                com.android.internal.R.dimen.textview_error_popup_default_width);
        Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels,
                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
        float max = 0;
        for (int i = 0; i < l.getLineCount(); i++) {
            max = Math.max(max, l.getLineWidth(i));
        }

        /*
         * Now set the popup size to be big enough for the text plus the border capped
         * to DEFAULT_MAX_POPUP_WIDTH
         */
        pop.setWidth(wid + (int) Math.ceil(max));
        pop.setHeight(ht + l.getHeight());
    }


    @Override
    protected boolean setFrame(int l, int t, int r, int b) {
        boolean result = super.setFrame(l, t, r, b);

        if (mPopup != null) {
            TextView tv = (TextView) mPopup.getContentView();
            chooseSize(mPopup, mError, tv);
            mPopup.update(this, getErrorX(), getErrorY(),
                          mPopup.getWidth(), mPopup.getHeight());
        }

        restartMarqueeIfNeeded();

        return result;
    }

    private void restartMarqueeIfNeeded() {
        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
            mRestartMarquee = false;
            startMarquee();
        }
    }

    /**
     * Sets the list of input filters that will be used if the buffer is
     * Editable.  Has no effect otherwise.
     *
     * @attr ref android.R.styleable#TextView_maxLength
     */
    public void setFilters(InputFilter[] filters) {
        if (filters == null) {
            throw new IllegalArgumentException();
        }

        mFilters = filters;

        if (mText instanceof Editable) {
            setFilters((Editable) mText, filters);
        }
    }

    /**
     * Sets the list of input filters on the specified Editable,
     * and includes mInput in the list if it is an InputFilter.
     */
    private void setFilters(Editable e, InputFilter[] filters) {
        if (mInput instanceof InputFilter) {
            InputFilter[] nf = new InputFilter[filters.length + 1];

            System.arraycopy(filters, 0, nf, 0, filters.length);
            nf[filters.length] = (InputFilter) mInput;

            e.setFilters(nf);
        } else {
            e.setFilters(filters);
        }
    }

    /**
     * Returns the current list of input filters.
     */
    public InputFilter[] getFilters() {
        return mFilters;
    }

    /////////////////////////////////////////////////////////////////////////

    private int getVerticalOffset(boolean forceNormal) {
        int voffset = 0;
        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;

        Layout l = mLayout;
        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
            l = mHintLayout;
        }

        if (gravity != Gravity.TOP) {
            int boxht;

            if (l == mHintLayout) {
                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
                        getCompoundPaddingBottom();
            } else {
                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
                        getExtendedPaddingBottom();
            }
            int textht = l.getHeight();

            if (textht < boxht) {
                if (gravity == Gravity.BOTTOM)
                    voffset = boxht - textht;
                else // (gravity == Gravity.CENTER_VERTICAL)
                    voffset = (boxht - textht) >> 1;
            }
        }
        return voffset;
    }

    private int getBottomVerticalOffset(boolean forceNormal) {
        int voffset = 0;
        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;

        Layout l = mLayout;
        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
            l = mHintLayout;
        }

        if (gravity != Gravity.BOTTOM) {
            int boxht;

            if (l == mHintLayout) {
                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
                        getCompoundPaddingBottom();
            } else {
                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
                        getExtendedPaddingBottom();
            }
            int textht = l.getHeight();

            if (textht < boxht) {
                if (gravity == Gravity.TOP)
                    voffset = boxht - textht;
                else // (gravity == Gravity.CENTER_VERTICAL)
                    voffset = (boxht - textht) >> 1;
            }
        }
        return voffset;
    }

    private void invalidateCursorPath() {
        if (mHighlightPathBogus) {
            invalidateCursor();
        } else {
            final int horizontalPadding = getCompoundPaddingLeft();
            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);

            if (mCursorCount == 0) {
                synchronized (sTempRect) {
                    /*
                     * The reason for this concern about the thickness of the
                     * cursor and doing the floor/ceil on the coordinates is that
                     * some EditTexts (notably textfields in the Browser) have
                     * anti-aliased text where not all the characters are
                     * necessarily at integer-multiple locations.  This should
                     * make sure the entire cursor gets invalidated instead of
                     * sometimes missing half a pixel.
                     */
                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
                    if (thick < 1.0f) {
                        thick = 1.0f;
                    }

                    thick /= 2.0f;

                    mHighlightPath.computeBounds(sTempRect, false);

                    invalidate((int) FloatMath.floor(horizontalPadding + sTempRect.left - thick),
                            (int) FloatMath.floor(verticalPadding + sTempRect.top - thick),
                            (int) FloatMath.ceil(horizontalPadding + sTempRect.right + thick),
                            (int) FloatMath.ceil(verticalPadding + sTempRect.bottom + thick));
                }
            } else {
                for (int i = 0; i < mCursorCount; i++) {
                    Rect bounds = mCursorDrawable[i].getBounds();
                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
                }
            }
        }
    }

    private void invalidateCursor() {
        int where = getSelectionEnd();

        invalidateCursor(where, where, where);
    }

    private void invalidateCursor(int a, int b, int c) {
        if (mLayout == null) {
            invalidate();
        } else {
            if (a >= 0 || b >= 0 || c >= 0) {
                int first = Math.min(Math.min(a, b), c);
                int last = Math.max(Math.max(a, b), c);

                int line = mLayout.getLineForOffset(first);
                int top = mLayout.getLineTop(line);

                // This is ridiculous, but the descent from the line above
                // can hang down into the line we really want to redraw,
                // so we have to invalidate part of the line above to make
                // sure everything that needs to be redrawn really is.
                // (But not the whole line above, because that would cause
                // the same problem with the descenders on the line above it!)
                if (line > 0) {
                    top -= mLayout.getLineDescent(line - 1);
                }

                int line2;

                if (first == last)
                    line2 = line;
                else
                    line2 = mLayout.getLineForOffset(last);

                int bottom = mLayout.getLineTop(line2 + 1);

                final int horizontalPadding = getCompoundPaddingLeft();
                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
                
                // If used, the cursor drawables can have an arbitrary dimension that can go beyond
                // the invalidated lines specified above.
                for (int i = 0; i < mCursorCount; i++) {
                    Rect bounds = mCursorDrawable[i].getBounds();
                    top = Math.min(top, bounds.top);
                    bottom = Math.max(bottom, bounds.bottom);
                    // Horizontal bounds are already full width, no need to update
                }

                invalidate(horizontalPadding + mScrollX, top + verticalPadding,
                        horizontalPadding + mScrollX + getWidth() -
                        getCompoundPaddingLeft() - getCompoundPaddingRight(),
                        bottom + verticalPadding);
            }
        }
    }

    private void registerForPreDraw() {
        final ViewTreeObserver observer = getViewTreeObserver();

        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
            observer.addOnPreDrawListener(this);
            mPreDrawState = PREDRAW_PENDING;
        } else if (mPreDrawState == PREDRAW_DONE) {
            mPreDrawState = PREDRAW_PENDING;
        }

        // else state is PREDRAW_PENDING, so keep waiting.
    }

    /**
     * {@inheritDoc}
     */
    public boolean onPreDraw() {
        if (mPreDrawState != PREDRAW_PENDING) {
            return true;
        }

        if (mLayout == null) {
            assumeLayout();
        }

        boolean changed = false;

        if (mMovement != null) {
            /* This code also provides auto-scrolling when a cursor is moved using a
             * CursorController (insertion point or selection limits).
             * For selection, ensure start or end is visible depending on controller's state.
             */
            int curs = getSelectionEnd();
            // Do not create the controller if it is not already created.
            if (mSelectionModifierCursorController != null &&
                    mSelectionModifierCursorController.isSelectionStartDragged()) {
                curs = getSelectionStart();
            }

            /*
             * TODO: This should really only keep the end in view if
             * it already was before the text changed.  I'm not sure
             * of a good way to tell from here if it was.
             */
            if (curs < 0 &&
                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
                curs = mText.length();
            }

            if (curs >= 0) {
                changed = bringPointIntoView(curs);
            }
        } else {
            changed = bringTextIntoView();
        }

        // This has to be checked here since:
        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
        //   a screen rotation) since layout is not yet initialized at that point.
        if (mCreatedWithASelection) {
            startSelectionActionMode();
            mCreatedWithASelection = false;
        }

        // Phone specific code (there is no ExtractEditText on tablets).
        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
        // not be set. Do the test here instead.
        if (this instanceof ExtractEditText && hasSelection()) {
            startSelectionActionMode();
        }

        mPreDrawState = PREDRAW_DONE;
        return !changed;
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();

        mTemporaryDetach = false;
        
        if (mShowErrorAfterAttach) {
            showError();
            mShowErrorAfterAttach = false;
        }

        final ViewTreeObserver observer = getViewTreeObserver();
        // No need to create the controller.
        // The get method will add the listener on controller creation.
        if (mInsertionPointCursorController != null) {
            observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
        }
        if (mSelectionModifierCursorController != null) {
            observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
        }

        // Resolve drawables as the layout direction has been resolved
        resolveDrawables();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();

        final ViewTreeObserver observer = getViewTreeObserver();
        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
            observer.removeOnPreDrawListener(this);
            mPreDrawState = PREDRAW_NOT_REGISTERED;
        }

        if (mError != null) {
            hideError();
        }

        if (mBlink != null) {
            mBlink.removeCallbacks(mBlink);
        }

        if (mInsertionPointCursorController != null) {
            mInsertionPointCursorController.onDetached();
        }

        if (mSelectionModifierCursorController != null) {
            mSelectionModifierCursorController.onDetached();
        }

        hideControllers();

        resetResolvedDrawables();
    }

    @Override
    protected boolean isPaddingOffsetRequired() {
        return mShadowRadius != 0 || mDrawables != null;
    }

    @Override
    protected int getLeftPaddingOffset() {
        return getCompoundPaddingLeft() - mPaddingLeft +
                (int) Math.min(0, mShadowDx - mShadowRadius);
    }

    @Override
    protected int getTopPaddingOffset() {
        return (int) Math.min(0, mShadowDy - mShadowRadius);
    }

    @Override
    protected int getBottomPaddingOffset() {
        return (int) Math.max(0, mShadowDy + mShadowRadius);
    }

    @Override
    protected int getRightPaddingOffset() {
        return -(getCompoundPaddingRight() - mPaddingRight) +
                (int) Math.max(0, mShadowDx + mShadowRadius);
    }

    @Override
    protected boolean verifyDrawable(Drawable who) {
        final boolean verified = super.verifyDrawable(who);
        if (!verified && mDrawables != null) {
            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
        }
        return verified;
    }

    @Override
    public void jumpDrawablesToCurrentState() {
        super.jumpDrawablesToCurrentState();
        if (mDrawables != null) {
            if (mDrawables.mDrawableLeft != null) {
                mDrawables.mDrawableLeft.jumpToCurrentState();
            }
            if (mDrawables.mDrawableTop != null) {
                mDrawables.mDrawableTop.jumpToCurrentState();
            }
            if (mDrawables.mDrawableRight != null) {
                mDrawables.mDrawableRight.jumpToCurrentState();
            }
            if (mDrawables.mDrawableBottom != null) {
                mDrawables.mDrawableBottom.jumpToCurrentState();
            }
            if (mDrawables.mDrawableStart != null) {
                mDrawables.mDrawableStart.jumpToCurrentState();
            }
            if (mDrawables.mDrawableEnd != null) {
                mDrawables.mDrawableEnd.jumpToCurrentState();
            }
        }
    }

    @Override
    public void invalidateDrawable(Drawable drawable) {
        if (verifyDrawable(drawable)) {
            final Rect dirty = drawable.getBounds();
            int scrollX = mScrollX;
            int scrollY = mScrollY;

            // IMPORTANT: The coordinates below are based on the coordinates computed
            // for each compound drawable in onDraw(). Make sure to update each section
            // accordingly.
            final TextView.Drawables drawables = mDrawables;
            if (drawables != null) {
                if (drawable == drawables.mDrawableLeft) {
                    final int compoundPaddingTop = getCompoundPaddingTop();
                    final int compoundPaddingBottom = getCompoundPaddingBottom();
                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;

                    scrollX += mPaddingLeft;
                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
                } else if (drawable == drawables.mDrawableRight) {
                    final int compoundPaddingTop = getCompoundPaddingTop();
                    final int compoundPaddingBottom = getCompoundPaddingBottom();
                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;

                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
                } else if (drawable == drawables.mDrawableTop) {
                    final int compoundPaddingLeft = getCompoundPaddingLeft();
                    final int compoundPaddingRight = getCompoundPaddingRight();
                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;

                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
                    scrollY += mPaddingTop;
                } else if (drawable == drawables.mDrawableBottom) {
                    final int compoundPaddingLeft = getCompoundPaddingLeft();
                    final int compoundPaddingRight = getCompoundPaddingRight();
                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;

                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
                }
            }

            invalidate(dirty.left + scrollX, dirty.top + scrollY,
                    dirty.right + scrollX, dirty.bottom + scrollY);
        }
    }

    /**
     * @hide
     */
    @Override
    public int getResolvedLayoutDirection(Drawable who) {
        if (who == null) return View.LAYOUT_DIRECTION_LTR;
        if (mDrawables != null) {
            final Drawables drawables = mDrawables;
            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
                who == drawables.mDrawableTop || who == drawables.mDrawableBottom ||
                who == drawables.mDrawableStart || who == drawables.mDrawableEnd) {
                return getResolvedLayoutDirection();
            }
        }
        return super.getResolvedLayoutDirection(who);
    }

    @Override
    protected boolean onSetAlpha(int alpha) {
        // Alpha is supported if and only if the drawing can be done in one pass.
        // TODO text with spans with a background color currently do not respect this alpha.
        if (getBackground() == null) {
            mCurrentAlpha = alpha;
            final Drawables dr = mDrawables;
            if (dr != null) {
                if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha);
                if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha);
                if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha);
                if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha);
                if (dr.mDrawableStart != null) dr.mDrawableStart.mutate().setAlpha(alpha);
                if (dr.mDrawableEnd != null) dr.mDrawableEnd.mutate().setAlpha(alpha);
            }
            return true;
        }

        mCurrentAlpha = 255;
        return false;
    }

    /**
     * When a TextView is used to display a useful piece of information to the user (such as a
     * contact's address), it should be made selectable, so that the user can select and copy this
     * content.
     *
     * Use {@link #setTextIsSelectable(boolean)} or the
     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
     * selectable (text is not selectable by default).
     *
     * Note that this method simply returns the state of this flag. Although this flag has to be set
     * in order to select text in non-editable TextView, the content of an {@link EditText} can
     * always be selected, independently of the value of this flag.
     *
     * @return True if the text displayed in this TextView can be selected by the user.
     *
     * @attr ref android.R.styleable#TextView_textIsSelectable
     */
    public boolean isTextSelectable() {
        return mTextIsSelectable;
    }

    /**
     * Sets whether or not (default) the content of this view is selectable by the user.
     * 
     * Note that this methods affect the {@link #setFocusable(boolean)},
     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
     * customized.
     *
     * See {@link #isTextSelectable} for details.
     *
     * @param selectable Whether or not the content of this TextView should be selectable.
     */
    public void setTextIsSelectable(boolean selectable) {
        if (mTextIsSelectable == selectable) return;

        mTextIsSelectable = selectable;

        setFocusableInTouchMode(selectable);
        setFocusable(selectable);
        setClickable(selectable);
        setLongClickable(selectable);

        // mInputType is already EditorInfo.TYPE_NULL and mInput is null;

        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);

        // Called by setText above, but safer in case of future code changes
        prepareCursorControllers();
    }

    @Override
    protected int[] onCreateDrawableState(int extraSpace) {
        final int[] drawableState;

        if (mSingleLine) {
            drawableState = super.onCreateDrawableState(extraSpace);
        } else {
            drawableState = super.onCreateDrawableState(extraSpace + 1);
            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
        }

        if (mTextIsSelectable) {
            // Disable pressed state, which was introduced when TextView was made clickable.
            // Prevents text color change.
            // setClickable(false) would have a similar effect, but it also disables focus changes
            // and long press actions, which are both needed by text selection.
            final int length = drawableState.length;
            for (int i = 0; i < length; i++) {
                if (drawableState[i] == R.attr.state_pressed) {
                    final int[] nonPressedState = new int[length - 1];
                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
                    return nonPressedState;
                }
            }
        }

        return drawableState;
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if (mPreDrawState == PREDRAW_DONE) {
            final ViewTreeObserver observer = getViewTreeObserver();
            observer.removeOnPreDrawListener(this);
            mPreDrawState = PREDRAW_NOT_REGISTERED;
        }

        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return;

        restartMarqueeIfNeeded();

        // Draw the background for this view
        super.onDraw(canvas);

        final int compoundPaddingLeft = getCompoundPaddingLeft();
        final int compoundPaddingTop = getCompoundPaddingTop();
        final int compoundPaddingRight = getCompoundPaddingRight();
        final int compoundPaddingBottom = getCompoundPaddingBottom();
        final int scrollX = mScrollX;
        final int scrollY = mScrollY;
        final int right = mRight;
        final int left = mLeft;
        final int bottom = mBottom;
        final int top = mTop;

        final Drawables dr = mDrawables;
        if (dr != null) {
            /*
             * Compound, not extended, because the icon is not clipped
             * if the text height is smaller.
             */

            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;

            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
            // Make sure to update invalidateDrawable() when changing this code.
            if (dr.mDrawableLeft != null) {
                canvas.save();
                canvas.translate(scrollX + mPaddingLeft,
                                 scrollY + compoundPaddingTop +
                                 (vspace - dr.mDrawableHeightLeft) / 2);
                dr.mDrawableLeft.draw(canvas);
                canvas.restore();
            }

            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
            // Make sure to update invalidateDrawable() when changing this code.
            if (dr.mDrawableRight != null) {
                canvas.save();
                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
                dr.mDrawableRight.draw(canvas);
                canvas.restore();
            }

            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
            // Make sure to update invalidateDrawable() when changing this code.
            if (dr.mDrawableTop != null) {
                canvas.save();
                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
                        scrollY + mPaddingTop);
                dr.mDrawableTop.draw(canvas);
                canvas.restore();
            }

            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
            // Make sure to update invalidateDrawable() when changing this code.
            if (dr.mDrawableBottom != null) {
                canvas.save();
                canvas.translate(scrollX + compoundPaddingLeft +
                        (hspace - dr.mDrawableWidthBottom) / 2,
                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
                dr.mDrawableBottom.draw(canvas);
                canvas.restore();
            }
        }

        int color = mCurTextColor;

        if (mLayout == null) {
            assumeLayout();
        }

        Layout layout = mLayout;
        int cursorcolor = color;

        if (mHint != null && mText.length() == 0) {
            if (mHintTextColor != null) {
                color = mCurHintTextColor;
            }

            layout = mHintLayout;
        }

        mTextPaint.setColor(color);
        if (mCurrentAlpha != 255) {
            // If set, the alpha will override the color's alpha. Multiply the alphas.
            mTextPaint.setAlpha((mCurrentAlpha * Color.alpha(color)) / 255);
        }
        mTextPaint.drawableState = getDrawableState();

        canvas.save();
        /*  Would be faster if we didn't have to do this. Can we chop the
            (displayable) text so that we don't need to do this ever?
        */

        int extendedPaddingTop = getExtendedPaddingTop();
        int extendedPaddingBottom = getExtendedPaddingBottom();

        float clipLeft = compoundPaddingLeft + scrollX;
        float clipTop = extendedPaddingTop + scrollY;
        float clipRight = right - left - compoundPaddingRight + scrollX;
        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;

        if (mShadowRadius != 0) {
            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
            clipRight += Math.max(0, mShadowDx + mShadowRadius);

            clipTop += Math.min(0, mShadowDy - mShadowRadius);
            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
        }

        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);

        int voffsetText = 0;
        int voffsetCursor = 0;

        // translate in by our padding
        {
            /* shortcircuit calling getVerticaOffset() */
            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
                voffsetText = getVerticalOffset(false);
                voffsetCursor = getVerticalOffset(true);
            }
            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
        }

        final int layoutDirection = getResolvedLayoutDirection();
        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
            }

            if (mMarquee != null && mMarquee.isRunning()) {
                canvas.translate(-mMarquee.mScroll, 0.0f);
            }
        }

        Path highlight = null;
        int selStart = -1, selEnd = -1;
        boolean drawCursor = false;

        //  If there is no movement method, then there can be no selection.
        //  Check that first and attempt to skip everything having to do with
        //  the cursor.
        //  XXX This is not strictly true -- a program could set the
        //  selection manually if it really wanted to.
        if (mMovement != null && (isFocused() || isPressed())) {
            selStart = getSelectionStart();
            selEnd = getSelectionEnd();

            if (selStart >= 0) {
                if (mHighlightPath == null) mHighlightPath = new Path();

                if (selStart == selEnd) {
                    if (isCursorVisible() &&
                            (SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK) < BLINK) {
                        if (mHighlightPathBogus) {
                            mHighlightPath.reset();
                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
                            updateCursorsPositions();
                            mHighlightPathBogus = false;
                        }

                        // XXX should pass to skin instead of drawing directly
                        mHighlightPaint.setColor(cursorcolor);
                        if (mCurrentAlpha != 255) {
                            mHighlightPaint.setAlpha(
                                    (mCurrentAlpha * Color.alpha(cursorcolor)) / 255);
                        }
                        mHighlightPaint.setStyle(Paint.Style.STROKE);
                        highlight = mHighlightPath;
                        drawCursor = mCursorCount > 0;
                    }
                } else if (textCanBeSelected()) {
                    if (mHighlightPathBogus) {
                        mHighlightPath.reset();
                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
                        mHighlightPathBogus = false;
                    }

                    // XXX should pass to skin instead of drawing directly
                    mHighlightPaint.setColor(mHighlightColor);
                    if (mCurrentAlpha != 255) {
                        mHighlightPaint.setAlpha(
                                (mCurrentAlpha * Color.alpha(mHighlightColor)) / 255);
                    }
                    mHighlightPaint.setStyle(Paint.Style.FILL);

                    highlight = mHighlightPath;
                }
            }
        }

        /*  Comment out until we decide what to do about animations
        boolean isLinearTextOn = false;
        if (currentTransformation != null) {
            isLinearTextOn = mTextPaint.isLinearTextOn();
            Matrix m = currentTransformation.getMatrix();
            if (!m.isIdentity()) {
                // mTextPaint.setLinearTextOn(true);
            }
        }
        */

        final InputMethodState ims = mInputMethodState;
        final int cursorOffsetVertical = voffsetCursor - voffsetText;
        if (ims != null && ims.mBatchEditNesting == 0) {
            InputMethodManager imm = InputMethodManager.peekInstance();
            if (imm != null) {
                if (imm.isActive(this)) {
                    boolean reported = false;
                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
                        // We are in extract mode and the content has changed
                        // in some way... just report complete new text to the
                        // input method.
                        reported = reportExtractedText();
                    }
                    if (!reported && highlight != null) {
                        int candStart = -1;
                        int candEnd = -1;
                        if (mText instanceof Spannable) {
                            Spannable sp = (Spannable)mText;
                            candStart = EditableInputConnection.getComposingSpanStart(sp);
                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
                        }
                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
                    }
                }
                
                if (imm.isWatchingCursor(this) && highlight != null) {
                    highlight.computeBounds(ims.mTmpRectF, true);
                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
    
                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
    
                    ims.mTmpRectF.offset(0, cursorOffsetVertical);
    
                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
                            (int)(ims.mTmpRectF.top + 0.5),
                            (int)(ims.mTmpRectF.right + 0.5),
                            (int)(ims.mTmpRectF.bottom + 0.5));
    
                    imm.updateCursor(this,
                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
                }
            }
        }

        if (mCorrectionHighlighter != null) {
            mCorrectionHighlighter.draw(canvas, cursorOffsetVertical);
        }

        if (drawCursor) {
            drawCursor(canvas, cursorOffsetVertical);
            // Rely on the drawable entirely, do not draw the cursor line.
            // Has to be done after the IMM related code above which relies on the highlight.
            highlight = null;
        }

        layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);

        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
        }

        /*  Comment out until we decide what to do about animations
        if (currentTransformation != null) {
            mTextPaint.setLinearTextOn(isLinearTextOn);
        }
        */

        canvas.restore();
    }

    private void updateCursorsPositions() {
        if (mCursorDrawableRes == 0) {
            mCursorCount = 0;
            return; 
        }

        final int offset = getSelectionStart();
        final int line = mLayout.getLineForOffset(offset);
        final int top = mLayout.getLineTop(line);
        final int bottom = mLayout.getLineTop(line + 1);

        mCursorCount = mLayout.isLevelBoundary(offset) ? 2 : 1;

        int middle = bottom;
        if (mCursorCount == 2) {
            // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)}
            middle = (top + bottom) >> 1;
        }

        updateCursorPosition(0, top, middle, mLayout.getPrimaryHorizontal(offset));

        if (mCursorCount == 2) {
            updateCursorPosition(1, middle, bottom, mLayout.getSecondaryHorizontal(offset));
        }
    }

    private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) {
        if (mCursorDrawable[cursorIndex] == null)
            mCursorDrawable[cursorIndex] = mContext.getResources().getDrawable(mCursorDrawableRes);

        if (mTempRect == null) mTempRect = new Rect();

        mCursorDrawable[cursorIndex].getPadding(mTempRect);
        final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth();
        horizontal = Math.max(0.5f, horizontal - 0.5f);
        final int left = (int) (horizontal) - mTempRect.left;
        mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width,
                bottom + mTempRect.bottom);
    }

    private void drawCursor(Canvas canvas, int cursorOffsetVertical) {
        final boolean translate = cursorOffsetVertical != 0;
        if (translate) canvas.translate(0, cursorOffsetVertical);
        for (int i = 0; i < mCursorCount; i++) {
            mCursorDrawable[i].draw(canvas);
        }
        if (translate) canvas.translate(0, -cursorOffsetVertical);
    }

    @Override
    public void getFocusedRect(Rect r) {
        if (mLayout == null) {
            super.getFocusedRect(r);
            return;
        }

        int selEnd = getSelectionEnd();
        if (selEnd < 0) {
            super.getFocusedRect(r);
            return;
        }

        int selStart = getSelectionStart();
        if (selStart < 0 || selStart >= selEnd) {
            int line = mLayout.getLineForOffset(selEnd);
            r.top = mLayout.getLineTop(line);
            r.bottom = mLayout.getLineBottom(line);
            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
            r.right = r.left + 4;
        } else {
            int lineStart = mLayout.getLineForOffset(selStart);
            int lineEnd = mLayout.getLineForOffset(selEnd);
            r.top = mLayout.getLineTop(lineStart);
            r.bottom = mLayout.getLineBottom(lineEnd);
            if (lineStart == lineEnd) {
                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
            } else {
                // Selection extends across multiple lines -- the focused
                // rect covers the entire width.
                if (mHighlightPath == null) mHighlightPath = new Path();
                if (mHighlightPathBogus) {
                    mHighlightPath.reset();
                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
                    mHighlightPathBogus = false;
                }
                synchronized (sTempRect) {
                    mHighlightPath.computeBounds(sTempRect, true);
                    r.left = (int)sTempRect.left-1;
                    r.right = (int)sTempRect.right+1;
                }
            }
        }

        // Adjust for padding and gravity.
        int paddingLeft = getCompoundPaddingLeft();
        int paddingTop = getExtendedPaddingTop();
        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
            paddingTop += getVerticalOffset(false);
        }
        r.offset(paddingLeft, paddingTop);
    }

    /**
     * Return the number of lines of text, or 0 if the internal Layout has not
     * been built.
     */
    public int getLineCount() {
        return mLayout != null ? mLayout.getLineCount() : 0;
    }

    /**
     * Return the baseline for the specified line (0...getLineCount() - 1)
     * If bounds is not null, return the top, left, right, bottom extents
     * of the specified line in it. If the internal Layout has not been built,
     * return 0 and set bounds to (0, 0, 0, 0)
     * @param line which line to examine (0..getLineCount() - 1)
     * @param bounds Optional. If not null, it returns the extent of the line
     * @return the Y-coordinate of the baseline
     */
    public int getLineBounds(int line, Rect bounds) {
        if (mLayout == null) {
            if (bounds != null) {
                bounds.set(0, 0, 0, 0);
            }
            return 0;
        }
        else {
            int baseline = mLayout.getLineBounds(line, bounds);

            int voffset = getExtendedPaddingTop();
            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
                voffset += getVerticalOffset(true);
            }
            if (bounds != null) {
                bounds.offset(getCompoundPaddingLeft(), voffset);
            }
            return baseline + voffset;
        }
    }

    @Override
    public int getBaseline() {
        if (mLayout == null) {
            return super.getBaseline();
        }

        int voffset = 0;
        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
            voffset = getVerticalOffset(true);
        }

        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
    }

    /**
     * @hide
     * @param offsetRequired
     */
    @Override
    protected int getFadeTop(boolean offsetRequired) {
        if (mLayout == null) return 0;

        int voffset = 0;
        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
            voffset = getVerticalOffset(true);
        }
        
        if (offsetRequired) voffset += getTopPaddingOffset();

        return getExtendedPaddingTop() + voffset;
    }

    /**
     * @hide
     * @param offsetRequired
     */
    @Override
    protected int getFadeHeight(boolean offsetRequired) {
        return mLayout != null ? mLayout.getHeight() : 0;
    }

    @Override
    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            boolean isInSelectionMode = mSelectionActionMode != null;

            if (isInSelectionMode) {
                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
                    KeyEvent.DispatcherState state = getKeyDispatcherState();
                    if (state != null) {
                        state.startTracking(event, this);
                    }
                    return true;
                } else if (event.getAction() == KeyEvent.ACTION_UP) {
                    KeyEvent.DispatcherState state = getKeyDispatcherState();
                    if (state != null) {
                        state.handleUpEvent(event);
                    }
                    if (event.isTracking() && !event.isCanceled()) {
                        if (isInSelectionMode) {
                            stopSelectionActionMode();
                            return true;
                        }
                    }
                }
            }
        }
        return super.onKeyPreIme(keyCode, event);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        int which = doKeyDown(keyCode, event, null);
        if (which == 0) {
            // Go through default dispatching.
            return super.onKeyDown(keyCode, event);
        }

        return true;
    }

    @Override
    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);

        int which = doKeyDown(keyCode, down, event);
        if (which == 0) {
            // Go through default dispatching.
            return super.onKeyMultiple(keyCode, repeatCount, event);
        }
        if (which == -1) {
            // Consumed the whole thing.
            return true;
        }

        repeatCount--;
        
        // We are going to dispatch the remaining events to either the input
        // or movement method.  To do this, we will just send a repeated stream
        // of down and up events until we have done the complete repeatCount.
        // It would be nice if those interfaces had an onKeyMultiple() method,
        // but adding that is a more complicated change.
        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
        if (which == 1) {
            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
            while (--repeatCount > 0) {
                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
            }
            hideErrorIfUnchanged();

        } else if (which == 2) {
            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
            while (--repeatCount > 0) {
                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
            }
        }

        return true;
    }

    /**
     * Returns true if pressing ENTER in this field advances focus instead
     * of inserting the character.  This is true mostly in single-line fields,
     * but also in mail addresses and subjects which will display on multiple
     * lines but where it doesn't make sense to insert newlines.
     */
    private boolean shouldAdvanceFocusOnEnter() {
        if (mInput == null) {
            return false;
        }

        if (mSingleLine) {
            return true;
        }

        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
                return true;
            }
        }

        return false;
    }

    /**
     * Returns true if pressing TAB in this field advances focus instead
     * of inserting the character.  Insert tabs only in multi-line editors.
     */
    private boolean shouldAdvanceFocusOnTab() {
        if (mInput != null && !mSingleLine) {
            if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
                int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
                if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
                        || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
                    return false;
                }
            }
        }
        return true;
    }

    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
        if (!isEnabled()) {
            return 0;
        }

        switch (keyCode) {
            case KeyEvent.KEYCODE_ENTER:
                mEnterKeyIsDown = true;
                if (event.hasNoModifiers()) {
                    // When mInputContentType is set, we know that we are
                    // running in a "modern" cupcake environment, so don't need
                    // to worry about the application trying to capture
                    // enter key events.
                    if (mInputContentType != null) {
                        // If there is an action listener, given them a
                        // chance to consume the event.
                        if (mInputContentType.onEditorActionListener != null &&
                                mInputContentType.onEditorActionListener.onEditorAction(
                                this, EditorInfo.IME_NULL, event)) {
                            mInputContentType.enterDown = true;
                            // We are consuming the enter key for them.
                            return -1;
                        }
                    }

                    // If our editor should move focus when enter is pressed, or
                    // this is a generated event from an IME action button, then
                    // don't let it be inserted into the text.
                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
                            || shouldAdvanceFocusOnEnter()) {
                        if (mOnClickListener != null) {
                            return 0;
                        }
                        return -1;
                    }
                }
                break;
                
            case KeyEvent.KEYCODE_DPAD_CENTER:
                mDPadCenterIsDown = true;
                if (event.hasNoModifiers()) {
                    if (shouldAdvanceFocusOnEnter()) {
                        return 0;
                    }
                }
                break;

            case KeyEvent.KEYCODE_TAB:
                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
                    if (shouldAdvanceFocusOnTab()) {
                        return 0;
                    }
                }
                break;

                // Has to be done on key down (and not on key up) to correctly be intercepted.
            case KeyEvent.KEYCODE_BACK:
                if (mSelectionActionMode != null) {
                    stopSelectionActionMode();
                    return -1;
                }
                break;
        }

        if (mInput != null) {
            resetErrorChangedFlag();

            boolean doDown = true;
            if (otherEvent != null) {
                try {
                    beginBatchEdit();
                    final boolean handled = mInput.onKeyOther(this, (Editable) mText, otherEvent);
                    hideErrorIfUnchanged();
                    doDown = false;
                    if (handled) {
                        return -1;
                    }
                } catch (AbstractMethodError e) {
                    // onKeyOther was added after 1.0, so if it isn't
                    // implemented we need to try to dispatch as a regular down.
                } finally {
                    endBatchEdit();
                }
            }
            
            if (doDown) {
                beginBatchEdit();
                final boolean handled = mInput.onKeyDown(this, (Editable) mText, keyCode, event);
                endBatchEdit();
                hideErrorIfUnchanged();
                if (handled) return 1;
            }
        }

        // bug 650865: sometimes we get a key event before a layout.
        // don't try to move around if we don't know the layout.

        if (mMovement != null && mLayout != null) {
            boolean doDown = true;
            if (otherEvent != null) {
                try {
                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
                            otherEvent);
                    doDown = false;
                    if (handled) {
                        return -1;
                    }
                } catch (AbstractMethodError e) {
                    // onKeyOther was added after 1.0, so if it isn't
                    // implemented we need to try to dispatch as a regular down.
                }
            }
            if (doDown) {
                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
                    return 2;
            }
        }

        return 0;
    }

    /**
     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
     * can be recorded.
     * @hide
     */
    public void resetErrorChangedFlag() {
        /*
         * Keep track of what the error was before doing the input
         * so that if an input filter changed the error, we leave
         * that error showing.  Otherwise, we take down whatever
         * error was showing when the user types something.
         */
        mErrorWasChanged = false;
    }

    /**
     * @hide
     */
    public void hideErrorIfUnchanged() {
        if (mError != null && !mErrorWasChanged) {
            setError(null, null);
        }
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if (!isEnabled()) {
            return super.onKeyUp(keyCode, event);
        }

        switch (keyCode) {
            case KeyEvent.KEYCODE_DPAD_CENTER:
                mDPadCenterIsDown = false;
                if (event.hasNoModifiers()) {
                    /*
                     * If there is a click listener, just call through to
                     * super, which will invoke it.
                     *
                     * If there isn't a click listener, try to show the soft
                     * input method.  (It will also
                     * call performClick(), but that won't do anything in
                     * this case.)
                     */
                    if (mOnClickListener == null) {
                        if (mMovement != null && mText instanceof Editable
                                && mLayout != null && onCheckIsTextEditor()) {
                            InputMethodManager imm = InputMethodManager.peekInstance();
                            viewClicked(imm);
                            if (imm != null) {
                                imm.showSoftInput(this, 0);
                            }
                        }
                    }
                }
                return super.onKeyUp(keyCode, event);

            case KeyEvent.KEYCODE_ENTER:
                mEnterKeyIsDown = false;
                if (event.hasNoModifiers()) {
                    if (mInputContentType != null
                            && mInputContentType.onEditorActionListener != null
                            && mInputContentType.enterDown) {
                        mInputContentType.enterDown = false;
                        if (mInputContentType.onEditorActionListener.onEditorAction(
                                this, EditorInfo.IME_NULL, event)) {
                            return true;
                        }
                    }

                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
                            || shouldAdvanceFocusOnEnter()) {
                        /*
                         * If there is a click listener, just call through to
                         * super, which will invoke it.
                         *
                         * If there isn't a click listener, try to advance focus,
                         * but still call through to super, which will reset the
                         * pressed state and longpress state.  (It will also
                         * call performClick(), but that won't do anything in
                         * this case.)
                         */
                        if (mOnClickListener == null) {
                            View v = focusSearch(FOCUS_DOWN);

                            if (v != null) {
                                if (!v.requestFocus(FOCUS_DOWN)) {
                                    throw new IllegalStateException(
                                            "focus search returned a view " +
                                            "that wasn't able to take focus!");
                                }

                                /*
                                 * Return true because we handled the key; super
                                 * will return false because there was no click
                                 * listener.
                                 */
                                super.onKeyUp(keyCode, event);
                                return true;
                            } else if ((event.getFlags()
                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
                                // No target for next focus, but make sure the IME
                                // if this came from it.
                                InputMethodManager imm = InputMethodManager.peekInstance();
                                if (imm != null && imm.isActive(this)) {
                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
                                }
                            }
                        }
                    }
                    return super.onKeyUp(keyCode, event);
                }
                break;
        }

        if (mInput != null)
            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
                return true;

        if (mMovement != null && mLayout != null)
            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
                return true;

        return super.onKeyUp(keyCode, event);
    }

    @Override public boolean onCheckIsTextEditor() {
        return mInputType != EditorInfo.TYPE_NULL;
    }
    
    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
        if (onCheckIsTextEditor() && isEnabled()) {
            if (mInputMethodState == null) {
                mInputMethodState = new InputMethodState();
            }
            outAttrs.inputType = mInputType;
            if (mInputContentType != null) {
                outAttrs.imeOptions = mInputContentType.imeOptions;
                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
                outAttrs.actionLabel = mInputContentType.imeActionLabel;
                outAttrs.actionId = mInputContentType.imeActionId;
                outAttrs.extras = mInputContentType.extras;
            } else {
                outAttrs.imeOptions = EditorInfo.IME_NULL;
            }
            if (focusSearch(FOCUS_DOWN) != null) {
                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
            }
            if (focusSearch(FOCUS_UP) != null) {
                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
            }
            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
                    // An action has not been set, but the enter key will move to
                    // the next focus, so set the action to that.
                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
                } else {
                    // An action has not been set, and there is no focus to move
                    // to, so let's just supply a "done" action.
                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
                }
                if (!shouldAdvanceFocusOnEnter()) {
                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
                }
            }
            if (isMultilineInputType(outAttrs.inputType)) {
                // Multi-line text editors should always show an enter key.
                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
            }
            outAttrs.hintText = mHint;
            if (mText instanceof Editable) {
                InputConnection ic = new EditableInputConnection(this);
                outAttrs.initialSelStart = getSelectionStart();
                outAttrs.initialSelEnd = getSelectionEnd();
                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
                return ic;
            }
        }
        return null;
    }

    /**
     * If this TextView contains editable content, extract a portion of it
     * based on the information in <var>request</var> in to <var>outText</var>.
     * @return Returns true if the text was successfully extracted, else false.
     */
    public boolean extractText(ExtractedTextRequest request,
            ExtractedText outText) {
        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
                EXTRACT_UNKNOWN, outText);
    }
    
    static final int EXTRACT_NOTHING = -2;
    static final int EXTRACT_UNKNOWN = -1;
    
    boolean extractTextInternal(ExtractedTextRequest request,
            int partialStartOffset, int partialEndOffset, int delta,
            ExtractedText outText) {
        final CharSequence content = mText;
        if (content != null) {
            if (partialStartOffset != EXTRACT_NOTHING) {
                final int N = content.length();
                if (partialStartOffset < 0) {
                    outText.partialStartOffset = outText.partialEndOffset = -1;
                    partialStartOffset = 0;
                    partialEndOffset = N;
                } else {
                    // Now use the delta to determine the actual amount of text
                    // we need.
                    partialEndOffset += delta;
                    // Adjust offsets to ensure we contain full spans.
                    if (content instanceof Spanned) {
                        Spanned spanned = (Spanned)content;
                        Object[] spans = spanned.getSpans(partialStartOffset,
                                partialEndOffset, ParcelableSpan.class);
                        int i = spans.length;
                        while (i > 0) {
                            i--;
                            int j = spanned.getSpanStart(spans[i]);
                            if (j < partialStartOffset) partialStartOffset = j;
                            j = spanned.getSpanEnd(spans[i]);
                            if (j > partialEndOffset) partialEndOffset = j;
                        }
                    }
                    outText.partialStartOffset = partialStartOffset;
                    outText.partialEndOffset = partialEndOffset - delta;

                    if (partialStartOffset > N) {
                        partialStartOffset = N;
                    } else if (partialStartOffset < 0) {
                        partialStartOffset = 0;
                    }
                    if (partialEndOffset > N) {
                        partialEndOffset = N;
                    } else if (partialEndOffset < 0) {
                        partialEndOffset = 0;
                    }
                }
                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
                    outText.text = content.subSequence(partialStartOffset,
                            partialEndOffset);
                } else {
                    outText.text = TextUtils.substring(content, partialStartOffset,
                            partialEndOffset);
                }
            } else {
                outText.partialStartOffset = 0;
                outText.partialEndOffset = 0;
                outText.text = "";
            }
            outText.flags = 0;
            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
                outText.flags |= ExtractedText.FLAG_SELECTING;
            }
            if (mSingleLine) {
                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
            }
            outText.startOffset = 0;
            outText.selectionStart = getSelectionStart();
            outText.selectionEnd = getSelectionEnd();
            return true;
        }
        return false;
    }
    
    boolean reportExtractedText() {
        final InputMethodState ims = mInputMethodState;
        if (ims != null) {
            final boolean contentChanged = ims.mContentChanged;
            if (contentChanged || ims.mSelectionModeChanged) {
                ims.mContentChanged = false;
                ims.mSelectionModeChanged = false;
                final ExtractedTextRequest req = mInputMethodState.mExtracting;
                if (req != null) {
                    InputMethodManager imm = InputMethodManager.peekInstance();
                    if (imm != null) {
                        if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start="
                                + ims.mChangedStart + " end=" + ims.mChangedEnd
                                + " delta=" + ims.mChangedDelta);
                        if (ims.mChangedStart < 0 && !contentChanged) {
                            ims.mChangedStart = EXTRACT_NOTHING;
                        }
                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
                                ims.mChangedDelta, ims.mTmpExtracted)) {
                            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start="
                                    + ims.mTmpExtracted.partialStartOffset
                                    + " end=" + ims.mTmpExtracted.partialEndOffset
                                    + ": " + ims.mTmpExtracted.text);
                            imm.updateExtractedText(this, req.token,
                                    mInputMethodState.mTmpExtracted);
                            ims.mChangedStart = EXTRACT_UNKNOWN;
                            ims.mChangedEnd = EXTRACT_UNKNOWN;
                            ims.mChangedDelta = 0;
                            ims.mContentChanged = false;
                            return true;
                        }
                    }
                }
            }
        }
        return false;
    }
    
    /**
     * This is used to remove all style-impacting spans from text before new
     * extracted text is being replaced into it, so that we don't have any
     * lingering spans applied during the replace.
     */
    static void removeParcelableSpans(Spannable spannable, int start, int end) {
        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
        int i = spans.length;
        while (i > 0) {
            i--;
            spannable.removeSpan(spans[i]);
        }
    }
    
    /**
     * Apply to this text view the given extracted text, as previously
     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
     */
    public void setExtractedText(ExtractedText text) {
        Editable content = getEditableText();
        if (text.text != null) {
            if (content == null) {
                setText(text.text, TextView.BufferType.EDITABLE);
            } else if (text.partialStartOffset < 0) {
                removeParcelableSpans(content, 0, content.length());
                content.replace(0, content.length(), text.text);
            } else {
                final int N = content.length();
                int start = text.partialStartOffset;
                if (start > N) start = N;
                int end = text.partialEndOffset;
                if (end > N) end = N;
                removeParcelableSpans(content, start, end);
                content.replace(start, end, text.text);
            }
        }
        
        // Now set the selection position...  make sure it is in range, to
        // avoid crashes.  If this is a partial update, it is possible that
        // the underlying text may have changed, causing us problems here.
        // Also we just don't want to trust clients to do the right thing.
        Spannable sp = (Spannable)getText();
        final int N = sp.length();
        int start = text.selectionStart;
        if (start < 0) start = 0;
        else if (start > N) start = N;
        int end = text.selectionEnd;
        if (end < 0) end = 0;
        else if (end > N) end = N;
        Selection.setSelection(sp, start, end);
        
        // Finally, update the selection mode.
        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
            MetaKeyKeyListener.startSelecting(this, sp);
        } else {
            MetaKeyKeyListener.stopSelecting(this, sp);
        }
    }

    /**
     * @hide
     */
    public void setExtracting(ExtractedTextRequest req) {
        if (mInputMethodState != null) {
            mInputMethodState.mExtracting = req;
        }
        // This would stop a possible selection mode, but no such mode is started in case
        // extracted mode will start. Some text is selected though, and will trigger an action mode
        // in the extracted view.
        hideControllers();
    }

    /**
     * Called by the framework in response to a text completion from
     * the current input method, provided by it calling
     * {@link InputConnection#commitCompletion
     * InputConnection.commitCompletion()}.  The default implementation does
     * nothing; text views that are supporting auto-completion should override
     * this to do their desired behavior.
     *
     * @param text The auto complete text the user has selected.
     */
    public void onCommitCompletion(CompletionInfo text) {
        // intentionally empty
    }

    /**
     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
     * a dictionnary) from the current input method, provided by it calling
     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
     * implementation flashes the background of the corrected word to provide feedback to the user.
     *
     * @param info The auto correct info about the text that was corrected.
     */
    public void onCommitCorrection(CorrectionInfo info) {
        if (mCorrectionHighlighter == null) {
            mCorrectionHighlighter = new CorrectionHighlighter();
        } else {
            mCorrectionHighlighter.invalidate(false);
        }

        mCorrectionHighlighter.highlight(info);
    }

    private class CorrectionHighlighter {
        private final Path mPath = new Path();
        private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        private int mStart, mEnd;
        private long mFadingStartTime;
        private final static int FADE_OUT_DURATION = 400;

        public CorrectionHighlighter() {
            mPaint.setCompatibilityScaling(getResources().getCompatibilityInfo().applicationScale);
            mPaint.setStyle(Paint.Style.FILL);
        }

        public void highlight(CorrectionInfo info) {
            mStart = info.getOffset();
            mEnd = mStart + info.getNewText().length();
            mFadingStartTime = SystemClock.uptimeMillis();

            if (mStart < 0 || mEnd < 0) {
                stopAnimation();
            }
        }

        public void draw(Canvas canvas, int cursorOffsetVertical) {
            if (updatePath() && updatePaint()) {
                if (cursorOffsetVertical != 0) {
                    canvas.translate(0, cursorOffsetVertical);
                }

                canvas.drawPath(mPath, mPaint);

                if (cursorOffsetVertical != 0) {
                    canvas.translate(0, -cursorOffsetVertical);
                }
                invalidate(true);
            } else {
                stopAnimation();
                invalidate(false);
            }
        }

        private boolean updatePaint() {
            final long duration = SystemClock.uptimeMillis() - mFadingStartTime;
            if (duration > FADE_OUT_DURATION) return false;

            final float coef = 1.0f - (float) duration / FADE_OUT_DURATION;
            final int highlightColorAlpha = Color.alpha(mHighlightColor);
            final int color = (mHighlightColor & 0x00FFFFFF) +
                    ((int) (highlightColorAlpha * coef) << 24);
            mPaint.setColor(color);
            return true;
        }

        private boolean updatePath() {
            final Layout layout = TextView.this.mLayout;
            if (layout == null) return false;

            // Update in case text is edited while the animation is run
            final int length = mText.length();
            int start = Math.min(length, mStart);
            int end = Math.min(length, mEnd);

            mPath.reset();
            TextView.this.mLayout.getSelectionPath(start, end, mPath);
            return true;
        }

        private void invalidate(boolean delayed) {
            if (TextView.this.mLayout == null) return;

            synchronized (sTempRect) {
                mPath.computeBounds(sTempRect, false);

                int left = getCompoundPaddingLeft();
                int top = getExtendedPaddingTop() + getVerticalOffset(true);

                if (delayed) {
                    TextView.this.postInvalidateDelayed(16, // 60 Hz update
                            left + (int) sTempRect.left, top + (int) sTempRect.top,
                            left + (int) sTempRect.right, top + (int) sTempRect.bottom);
                } else {
                    TextView.this.postInvalidate((int) sTempRect.left, (int) sTempRect.top,
                            (int) sTempRect.right, (int) sTempRect.bottom);
                }
            }
        }

        private void stopAnimation() {
            TextView.this.mCorrectionHighlighter = null;
        }
    }

    public void beginBatchEdit() {
        mInBatchEditControllers = true;
        final InputMethodState ims = mInputMethodState;
        if (ims != null) {
            int nesting = ++ims.mBatchEditNesting;
            if (nesting == 1) {
                ims.mCursorChanged = false;
                ims.mChangedDelta = 0;
                if (ims.mContentChanged) {
                    // We already have a pending change from somewhere else,
                    // so turn this into a full update.
                    ims.mChangedStart = 0;
                    ims.mChangedEnd = mText.length();
                } else {
                    ims.mChangedStart = EXTRACT_UNKNOWN;
                    ims.mChangedEnd = EXTRACT_UNKNOWN;
                    ims.mContentChanged = false;
                }
                onBeginBatchEdit();
            }
        }
    }
    
    public void endBatchEdit() {
        mInBatchEditControllers = false;
        final InputMethodState ims = mInputMethodState;
        if (ims != null) {
            int nesting = --ims.mBatchEditNesting;
            if (nesting == 0) {
                finishBatchEdit(ims);
            }
        }
    }
    
    void ensureEndedBatchEdit() {
        final InputMethodState ims = mInputMethodState;
        if (ims != null && ims.mBatchEditNesting != 0) {
            ims.mBatchEditNesting = 0;
            finishBatchEdit(ims);
        }
    }
    
    void finishBatchEdit(final InputMethodState ims) {
        onEndBatchEdit();
        
        if (ims.mContentChanged || ims.mSelectionModeChanged) {
            updateAfterEdit();
            reportExtractedText();
        } else if (ims.mCursorChanged) {
            // Cheezy way to get us to report the current cursor location.
            invalidateCursor();
        }
    }
    
    void updateAfterEdit() {
        invalidate();
        int curs = getSelectionStart();

        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
            registerForPreDraw();
        }

        if (curs >= 0) {
            mHighlightPathBogus = true;
            makeBlink();
            bringPointIntoView(curs);
        }

        checkForResize();
    }
    
    /**
     * Called by the framework in response to a request to begin a batch
     * of edit operations through a call to link {@link #beginBatchEdit()}.
     */
    public void onBeginBatchEdit() {
        // intentionally empty
    }
    
    /**
     * Called by the framework in response to a request to end a batch
     * of edit operations through a call to link {@link #endBatchEdit}.
     */
    public void onEndBatchEdit() {
        // intentionally empty
    }
    
    /**
     * Called by the framework in response to a private command from the
     * current method, provided by it calling
     * {@link InputConnection#performPrivateCommand
     * InputConnection.performPrivateCommand()}.
     *
     * @param action The action name of the command.
     * @param data Any additional data for the command.  This may be null.
     * @return Return true if you handled the command, else false.
     */
    public boolean onPrivateIMECommand(String action, Bundle data) {
        return false;
    }

    private void nullLayouts() {
        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
            mSavedLayout = (BoringLayout) mLayout;
        }
        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
            mSavedHintLayout = (BoringLayout) mHintLayout;
        }

        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;

        // Since it depends on the value of mLayout
        prepareCursorControllers();
    }

    /**
     * Make a new Layout based on the already-measured size of the view,
     * on the assumption that it was measured correctly at some point.
     */
    private void assumeLayout() {
        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();

        if (width < 1) {
            width = 0;
        }

        int physicalWidth = width;

        if (mHorizontallyScrolling) {
            width = VERY_WIDE;
        }

        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
                      physicalWidth, false);
    }

    @Override
    protected void resetResolvedLayoutDirection() {
        super.resetResolvedLayoutDirection();

        if (mLayoutAlignment != null &&
                (mTextAlign == TextAlign.VIEW_START ||
                mTextAlign == TextAlign.VIEW_END)) {
            mLayoutAlignment = null;
        }
    }

    private Layout.Alignment getLayoutAlignment() {
        if (mLayoutAlignment == null) {
            Layout.Alignment alignment;
            TextAlign textAlign = mTextAlign;
            switch (textAlign) {
                case INHERIT:
                    // fall through to gravity temporarily
                    // intention is to inherit value through view hierarchy.
                case GRAVITY:
                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
                        case Gravity.START:
                            alignment = Layout.Alignment.ALIGN_NORMAL;
                            break;
                        case Gravity.END:
                            alignment = Layout.Alignment.ALIGN_OPPOSITE;
                            break;
                        case Gravity.LEFT:
                            alignment = Layout.Alignment.ALIGN_LEFT;
                            break;
                        case Gravity.RIGHT:
                            alignment = Layout.Alignment.ALIGN_RIGHT;
                            break;
                        case Gravity.CENTER_HORIZONTAL:
                            alignment = Layout.Alignment.ALIGN_CENTER;
                            break;
                        default:
                            alignment = Layout.Alignment.ALIGN_NORMAL;
                            break;
                    }
                    break;
                case TEXT_START:
                    alignment = Layout.Alignment.ALIGN_NORMAL;
                    break;
                case TEXT_END:
                    alignment = Layout.Alignment.ALIGN_OPPOSITE;
                    break;
                case CENTER:
                    alignment = Layout.Alignment.ALIGN_CENTER;
                    break;
                case VIEW_START:
                    alignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
                    break;
                case VIEW_END:
                    alignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
                    break;
                default:
                    alignment = Layout.Alignment.ALIGN_NORMAL;
                    break;
            }
            mLayoutAlignment = alignment;
        }
        return mLayoutAlignment;
    }

    /**
     * The width passed in is now the desired layout width,
     * not the full view width with padding.
     * {@hide}
     */
    protected void makeNewLayout(int w, int hintWidth,
                                 BoringLayout.Metrics boring,
                                 BoringLayout.Metrics hintBoring,
                                 int ellipsisWidth, boolean bringIntoView) {
        stopMarquee();

        // Update "old" cached values
        mOldMaximum = mMaximum;
        mOldMaxMode = mMaxMode;

        mHighlightPathBogus = true;

        if (w < 0) {
            w = 0;
        }
        if (hintWidth < 0) {
            hintWidth = 0;
        }

        Layout.Alignment alignment = getLayoutAlignment();
        boolean shouldEllipsize = mEllipsize != null && mInput == null;
        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
        TruncateAt effectiveEllipsize = mEllipsize;
        if (mEllipsize == TruncateAt.MARQUEE &&
                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
            effectiveEllipsize = TruncateAt.END;
        }

        if (mTextDir == null) {
            resolveTextDirection();
        }

        mLayout = makeSingleLayout(w, boring, ellipsisWidth, alignment, shouldEllipsize,
                effectiveEllipsize, effectiveEllipsize == mEllipsize);
        if (switchEllipsize) {
            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
                    TruncateAt.END : TruncateAt.MARQUEE;
            mSavedMarqueeModeLayout = makeSingleLayout(w, boring, ellipsisWidth, alignment,
                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
        }

        shouldEllipsize = mEllipsize != null;
        mHintLayout = null;

        if (mHint != null) {
            if (shouldEllipsize) hintWidth = w;

            if (hintBoring == UNKNOWN_BORING) {
                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
                                                   mHintBoring);
                if (hintBoring != null) {
                    mHintBoring = hintBoring;
                }
            }

            if (hintBoring != null) {
                if (hintBoring.width <= hintWidth &&
                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
                    if (mSavedHintLayout != null) {
                        mHintLayout = mSavedHintLayout.
                                replaceOrMake(mHint, mTextPaint,
                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
                                hintBoring, mIncludePad);
                    } else {
                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
                                hintBoring, mIncludePad);
                    }

                    mSavedHintLayout = (BoringLayout) mHintLayout;
                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
                    if (mSavedHintLayout != null) {
                        mHintLayout = mSavedHintLayout.
                                replaceOrMake(mHint, mTextPaint,
                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
                                hintBoring, mIncludePad, mEllipsize,
                                ellipsisWidth);
                    } else {
                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
                                hintBoring, mIncludePad, mEllipsize,
                                ellipsisWidth);
                    }
                } else if (shouldEllipsize) {
                    mHintLayout = new StaticLayout(mHint,
                                0, mHint.length(),
                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
                                mSpacingAdd, mIncludePad, mEllipsize,
                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
                } else {
                    mHintLayout = new StaticLayout(mHint, mTextPaint,
                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
                            mIncludePad);
                }
            } else if (shouldEllipsize) {
                mHintLayout = new StaticLayout(mHint,
                            0, mHint.length(),
                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
                            mSpacingAdd, mIncludePad, mEllipsize,
                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
            } else {
                mHintLayout = new StaticLayout(mHint, mTextPaint,
                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
                        mIncludePad);
            }
        }

        if (bringIntoView) {
            registerForPreDraw();
        }

        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
            if (!compressText(ellipsisWidth)) {
                final int height = mLayoutParams.height;
                // If the size of the view does not depend on the size of the text, try to
                // start the marquee immediately
                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
                    startMarquee();
                } else {
                    // Defer the start of the marquee until we know our width (see setFrame())
                    mRestartMarquee = true;
                }
            }
        }

        // CursorControllers need a non-null mLayout
        prepareCursorControllers();
    }

    private Layout makeSingleLayout(int w, BoringLayout.Metrics boring, int ellipsisWidth,
            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
            boolean useSaved) {
        Layout result = null;
        if (mText instanceof Spannable) {
            result = new DynamicLayout(mText, mTransformed, mTextPaint, w,
                    alignment, mTextDir, mSpacingMult,
                    mSpacingAdd, mIncludePad, mInput == null ? effectiveEllipsize : null,
                            ellipsisWidth);
        } else {
            if (boring == UNKNOWN_BORING) {
                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
                if (boring != null) {
                    mBoring = boring;
                }
            }

            if (boring != null) {
                if (boring.width <= w &&
                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
                    if (useSaved && mSavedLayout != null) {
                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
                                w, alignment, mSpacingMult, mSpacingAdd,
                                boring, mIncludePad);
                    } else {
                        result = BoringLayout.make(mTransformed, mTextPaint,
                                w, alignment, mSpacingMult, mSpacingAdd,
                                boring, mIncludePad);
                    }

                    if (useSaved) {
                        mSavedLayout = (BoringLayout) result;
                    }
                } else if (shouldEllipsize && boring.width <= w) {
                    if (useSaved && mSavedLayout != null) {
                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
                                w, alignment, mSpacingMult, mSpacingAdd,
                                boring, mIncludePad, effectiveEllipsize,
                                ellipsisWidth);
                    } else {
                        result = BoringLayout.make(mTransformed, mTextPaint,
                                w, alignment, mSpacingMult, mSpacingAdd,
                                boring, mIncludePad, effectiveEllipsize,
                                ellipsisWidth);
                    }
                } else if (shouldEllipsize) {
                    result = new StaticLayout(mTransformed,
                            0, mTransformed.length(),
                            mTextPaint, w, alignment, mTextDir, mSpacingMult,
                            mSpacingAdd, mIncludePad, effectiveEllipsize,
                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
                } else {
                    result = new StaticLayout(mTransformed, mTextPaint,
                            w, alignment, mTextDir, mSpacingMult, mSpacingAdd,
                            mIncludePad);
                }
            } else if (shouldEllipsize) {
                result = new StaticLayout(mTransformed,
                        0, mTransformed.length(),
                        mTextPaint, w, alignment, mTextDir, mSpacingMult,
                        mSpacingAdd, mIncludePad, effectiveEllipsize,
                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
            } else {
                result = new StaticLayout(mTransformed, mTextPaint,
                        w, alignment, mTextDir, mSpacingMult, mSpacingAdd,
                        mIncludePad);
            }
        }
        return result;
    }

    private boolean compressText(float width) {
        if (isHardwareAccelerated()) return false;
        
        // Only compress the text if it hasn't been compressed by the previous pass
        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
                mTextPaint.getTextScaleX() == 1.0f) {
            final float textWidth = mLayout.getLineWidth(0);
            final float overflow = (textWidth + 1.0f - width) / width;
            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
                post(new Runnable() {
                    public void run() {
                        requestLayout();
                    }
                });
                return true;
            }
        }

        return false;
    }

    private static int desired(Layout layout) {
        int n = layout.getLineCount();
        CharSequence text = layout.getText();
        float max = 0;

        // if any line was wrapped, we can't use it.
        // but it's ok for the last line not to have a newline

        for (int i = 0; i < n - 1; i++) {
            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
                return -1;
        }

        for (int i = 0; i < n; i++) {
            max = Math.max(max, layout.getLineWidth(i));
        }

        return (int) FloatMath.ceil(max);
    }

    /**
     * Set whether the TextView includes extra top and bottom padding to make
     * room for accents that go above the normal ascent and descent.
     * The default is true.
     *
     * @attr ref android.R.styleable#TextView_includeFontPadding
     */
    public void setIncludeFontPadding(boolean includepad) {
        if (mIncludePad != includepad) {
            mIncludePad = includepad;

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
        int heightSize = MeasureSpec.getSize(heightMeasureSpec);

        int width;
        int height;

        BoringLayout.Metrics boring = UNKNOWN_BORING;
        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;

        if (mTextDir == null) {
            resolveTextDirection();
        }

        int des = -1;
        boolean fromexisting = false;

        if (widthMode == MeasureSpec.EXACTLY) {
            // Parent has told us how big to be. So be it.
            width = widthSize;
        } else {
            if (mLayout != null && mEllipsize == null) {
                des = desired(mLayout);
            }

            if (des < 0) {
                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
                if (boring != null) {
                    mBoring = boring;
                }
            } else {
                fromexisting = true;
            }

            if (boring == null || boring == UNKNOWN_BORING) {
                if (des < 0) {
                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
                }

                width = des;
            } else {
                width = boring.width;
            }

            final Drawables dr = mDrawables;
            if (dr != null) {
                width = Math.max(width, dr.mDrawableWidthTop);
                width = Math.max(width, dr.mDrawableWidthBottom);
            }

            if (mHint != null) {
                int hintDes = -1;
                int hintWidth;

                if (mHintLayout != null && mEllipsize == null) {
                    hintDes = desired(mHintLayout);
                }

                if (hintDes < 0) {
                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
                    if (hintBoring != null) {
                        mHintBoring = hintBoring;
                    }
                }

                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
                    if (hintDes < 0) {
                        hintDes = (int) FloatMath.ceil(
                                Layout.getDesiredWidth(mHint, mTextPaint));
                    }

                    hintWidth = hintDes;
                } else {
                    hintWidth = hintBoring.width;
                }

                if (hintWidth > width) {
                    width = hintWidth;
                }
            }

            width += getCompoundPaddingLeft() + getCompoundPaddingRight();

            if (mMaxWidthMode == EMS) {
                width = Math.min(width, mMaxWidth * getLineHeight());
            } else {
                width = Math.min(width, mMaxWidth);
            }

            if (mMinWidthMode == EMS) {
                width = Math.max(width, mMinWidth * getLineHeight());
            } else {
                width = Math.max(width, mMinWidth);
            }

            // Check against our minimum width
            width = Math.max(width, getSuggestedMinimumWidth());

            if (widthMode == MeasureSpec.AT_MOST) {
                width = Math.min(widthSize, width);
            }
        }

        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
        int unpaddedWidth = want;

        if (mHorizontallyScrolling) want = VERY_WIDE;

        int hintWant = want;
        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();

        if (mLayout == null) {
            makeNewLayout(want, hintWant, boring, hintBoring,
                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
        } else {
            final boolean layoutChanged = (mLayout.getWidth() != want) ||
                    (hintWidth != hintWant) ||
                    (mLayout.getEllipsizedWidth() !=
                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());

            final boolean widthChanged = (mHint == null) &&
                    (mEllipsize == null) &&
                    (want > mLayout.getWidth()) &&
                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));

            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);

            if (layoutChanged || maximumChanged) {
                if (!maximumChanged && widthChanged) {
                    mLayout.increaseWidthTo(want);
                } else {
                    makeNewLayout(want, hintWant, boring, hintBoring,
                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
                }
            } else {
                // Nothing has changed
            }
        }

        if (heightMode == MeasureSpec.EXACTLY) {
            // Parent has told us how big to be. So be it.
            height = heightSize;
            mDesiredHeightAtMeasure = -1;
        } else {
            int desired = getDesiredHeight();

            height = desired;
            mDesiredHeightAtMeasure = desired;

            if (heightMode == MeasureSpec.AT_MOST) {
                height = Math.min(desired, heightSize);
            }
        }

        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
        }

        /*
         * We didn't let makeNewLayout() register to bring the cursor into view,
         * so do it here if there is any possibility that it is needed.
         */
        if (mMovement != null ||
            mLayout.getWidth() > unpaddedWidth ||
            mLayout.getHeight() > unpaddedHeight) {
            registerForPreDraw();
        } else {
            scrollTo(0, 0);
        }

        setMeasuredDimension(width, height);
    }

    private int getDesiredHeight() {
        return Math.max(
                getDesiredHeight(mLayout, true),
                getDesiredHeight(mHintLayout, mEllipsize != null));
    }

    private int getDesiredHeight(Layout layout, boolean cap) {
        if (layout == null) {
            return 0;
        }

        int linecount = layout.getLineCount();
        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
        int desired = layout.getLineTop(linecount);

        final Drawables dr = mDrawables;
        if (dr != null) {
            desired = Math.max(desired, dr.mDrawableHeightLeft);
            desired = Math.max(desired, dr.mDrawableHeightRight);
        }

        desired += pad;

        if (mMaxMode == LINES) {
            /*
             * Don't cap the hint to a certain number of lines.
             * (Do cap it, though, if we have a maximum pixel height.)
             */
            if (cap) {
                if (linecount > mMaximum) {
                    desired = layout.getLineTop(mMaximum);

                    if (dr != null) {
                        desired = Math.max(desired, dr.mDrawableHeightLeft);
                        desired = Math.max(desired, dr.mDrawableHeightRight);
                    }

                    desired += pad;
                    linecount = mMaximum;
                }
            }
        } else {
            desired = Math.min(desired, mMaximum);
        }

        if (mMinMode == LINES) {
            if (linecount < mMinimum) {
                desired += getLineHeight() * (mMinimum - linecount);
            }
        } else {
            desired = Math.max(desired, mMinimum);
        }

        // Check against our minimum height
        desired = Math.max(desired, getSuggestedMinimumHeight());

        return desired;
    }

    /**
     * Check whether a change to the existing text layout requires a
     * new view layout.
     */
    private void checkForResize() {
        boolean sizeChanged = false;

        if (mLayout != null) {
            // Check if our width changed
            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
                sizeChanged = true;
                invalidate();
            }

            // Check if our height changed
            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
                int desiredHeight = getDesiredHeight();

                if (desiredHeight != this.getHeight()) {
                    sizeChanged = true;
                }
            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
                if (mDesiredHeightAtMeasure >= 0) {
                    int desiredHeight = getDesiredHeight();

                    if (desiredHeight != mDesiredHeightAtMeasure) {
                        sizeChanged = true;
                    }
                }
            }
        }

        if (sizeChanged) {
            requestLayout();
            // caller will have already invalidated
        }
    }

    /**
     * Check whether entirely new text requires a new view layout
     * or merely a new text layout.
     */
    private void checkForRelayout() {
        // If we have a fixed width, we can just swap in a new text layout
        // if the text height stays the same or if the view height is fixed.

        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
                (mHint == null || mHintLayout != null) &&
                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
            // Static width, so try making a new text layout.

            int oldht = mLayout.getHeight();
            int want = mLayout.getWidth();
            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();

            /*
             * No need to bring the text into view, since the size is not
             * changing (unless we do the requestLayout(), in which case it
             * will happen at measure).
             */
            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
                          false);

            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
                // In a fixed-height view, so use our new text layout.
                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
                    invalidate();
                    return;
                }
    
                // Dynamic height, but height has stayed the same,
                // so use our new text layout.
                if (mLayout.getHeight() == oldht &&
                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
                    invalidate();
                    return;
                }
            }

            // We lose: the height has changed and we have a dynamic height.
            // Request a new view layout using our new text layout.
            requestLayout();
            invalidate();
        } else {
            // Dynamic width, so we have no choice but to request a new
            // view layout with a new text layout.
            nullLayouts();
            requestLayout();
            invalidate();
        }
    }

    /**
     * Returns true if anything changed.
     */
    private boolean bringTextIntoView() {
        int line = 0;
        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
            line = mLayout.getLineCount() - 1;
        }

        Layout.Alignment a = mLayout.getParagraphAlignment(line);
        int dir = mLayout.getParagraphDirection(line);
        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
        int ht = mLayout.getHeight();

        int scrollx, scrolly;

        // Convert to left, center, or right alignment.
        if (a == Layout.Alignment.ALIGN_NORMAL) {
            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
                Layout.Alignment.ALIGN_RIGHT;
        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
                Layout.Alignment.ALIGN_LEFT;
        }

        if (a == Layout.Alignment.ALIGN_CENTER) {
            /*
             * Keep centered if possible, or, if it is too wide to fit,
             * keep leading edge in view.
             */

            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));

            if (right - left < hspace) {
                scrollx = (right + left) / 2 - hspace / 2;
            } else {
                if (dir < 0) {
                    scrollx = right - hspace;
                } else {
                    scrollx = left;
                }
            }
        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
            scrollx = right - hspace;
        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
            scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
        }

        if (ht < vspace) {
            scrolly = 0;
        } else {
            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
                scrolly = ht - vspace;
            } else {
                scrolly = 0;
            }
        }

        if (scrollx != mScrollX || scrolly != mScrollY) {
            scrollTo(scrollx, scrolly);
            return true;
        } else {
            return false;
        }
    }

    /**
     * Move the point, specified by the offset, into the view if it is needed.
     * This has to be called after layout. Returns true if anything changed.
     */
    public boolean bringPointIntoView(int offset) {
        boolean changed = false;

        if (mLayout == null) return changed;

        int line = mLayout.getLineForOffset(offset);

        // FIXME: Is it okay to truncate this, or should we round?
        final int x = (int)mLayout.getPrimaryHorizontal(offset);
        final int top = mLayout.getLineTop(line);
        final int bottom = mLayout.getLineTop(line + 1);

        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
        int ht = mLayout.getHeight();

        int grav;

        switch (mLayout.getParagraphAlignment(line)) {
            case ALIGN_LEFT:
                grav = 1;
                break;
            case ALIGN_RIGHT:
                grav = -1;
                break;
            case ALIGN_NORMAL:
                grav = mLayout.getParagraphDirection(line);
                break;
            case ALIGN_OPPOSITE:
                grav = -mLayout.getParagraphDirection(line);
                break;
            case ALIGN_CENTER:
            default:
                grav = 0;
                break;
        }

        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();

        int hslack = (bottom - top) / 2;
        int vslack = hslack;

        if (vslack > vspace / 4)
            vslack = vspace / 4;
        if (hslack > hspace / 4)
            hslack = hspace / 4;

        int hs = mScrollX;
        int vs = mScrollY;

        if (top - vs < vslack)
            vs = top - vslack;
        if (bottom - vs > vspace - vslack)
            vs = bottom - (vspace - vslack);
        if (ht - vs < vspace)
            vs = ht - vspace;
        if (0 - vs > 0)
            vs = 0;

        if (grav != 0) {
            if (x - hs < hslack) {
                hs = x - hslack;
            }
            if (x - hs > hspace - hslack) {
                hs = x - (hspace - hslack);
            }
        }

        if (grav < 0) {
            if (left - hs > 0)
                hs = left;
            if (right - hs < hspace)
                hs = right - hspace;
        } else if (grav > 0) {
            if (right - hs < hspace)
                hs = right - hspace;
            if (left - hs > 0)
                hs = left;
        } else /* grav == 0 */ {
            if (right - left <= hspace) {
                /*
                 * If the entire text fits, center it exactly.
                 */
                hs = left - (hspace - (right - left)) / 2;
            } else if (x > right - hslack) {
                /*
                 * If we are near the right edge, keep the right edge
                 * at the edge of the view.
                 */
                hs = right - hspace;
            } else if (x < left + hslack) {
                /*
                 * If we are near the left edge, keep the left edge
                 * at the edge of the view.
                 */
                hs = left;
            } else if (left > hs) {
                /*
                 * Is there whitespace visible at the left?  Fix it if so.
                 */
                hs = left;
            } else if (right < hs + hspace) {
                /*
                 * Is there whitespace visible at the right?  Fix it if so.
                 */
                hs = right - hspace;
            } else {
                /*
                 * Otherwise, float as needed.
                 */
                if (x - hs < hslack) {
                    hs = x - hslack;
                }
                if (x - hs > hspace - hslack) {
                    hs = x - (hspace - hslack);
                }
            }
        }

        if (hs != mScrollX || vs != mScrollY) {
            if (mScroller == null) {
                scrollTo(hs, vs);
            } else {
                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
                int dx = hs - mScrollX;
                int dy = vs - mScrollY;

                if (duration > ANIMATED_SCROLL_GAP) {
                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
                    awakenScrollBars(mScroller.getDuration());
                    invalidate();
                } else {
                    if (!mScroller.isFinished()) {
                        mScroller.abortAnimation();
                    }

                    scrollBy(dx, dy);
                }

                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
            }

            changed = true;
        }

        if (isFocused()) {
            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
            // requestRectangleOnScreen() is in terms of content coordinates.

            if (mTempRect == null) mTempRect = new Rect();
            // The offsets here are to ensure the rectangle we are using is
            // within our view bounds, in case the cursor is on the far left
            // or right.  If it isn't withing the bounds, then this request
            // will be ignored.
            mTempRect.set(x - 2, top, x + 2, bottom);
            getInterestingRect(mTempRect, line);
            mTempRect.offset(mScrollX, mScrollY);

            if (requestRectangleOnScreen(mTempRect)) {
                changed = true;
            }
        }

        return changed;
    }

    /**
     * Move the cursor, if needed, so that it is at an offset that is visible
     * to the user.  This will not move the cursor if it represents more than
     * one character (a selection range).  This will only work if the
     * TextView contains spannable text; otherwise it will do nothing.
     *
     * @return True if the cursor was actually moved, false otherwise.
     */
    public boolean moveCursorToVisibleOffset() {
        if (!(mText instanceof Spannable)) {
            return false;
        }
        int start = getSelectionStart();
        int end = getSelectionEnd();
        if (start != end) {
            return false;
        }
        
        // First: make sure the line is visible on screen:
        
        int line = mLayout.getLineForOffset(start);

        final int top = mLayout.getLineTop(line);
        final int bottom = mLayout.getLineTop(line + 1);
        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
        int vslack = (bottom - top) / 2;
        if (vslack > vspace / 4)
            vslack = vspace / 4;
        final int vs = mScrollY;

        if (top < (vs+vslack)) {
            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
        } else if (bottom > (vspace+vs-vslack)) {
            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
        }
        
        // Next: make sure the character is visible on screen:
        
        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
        final int hs = mScrollX;
        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
        
        // line might contain bidirectional text
        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
        final int highChar = leftChar > rightChar ? leftChar : rightChar;

        int newStart = start;
        if (newStart < lowChar) {
            newStart = lowChar;
        } else if (newStart > highChar) {
            newStart = highChar;
        }
        
        if (newStart != start) {
            Selection.setSelection((Spannable)mText, newStart);
            return true;
        }
        
        return false;
    }

    @Override
    public void computeScroll() {
        if (mScroller != null) {
            if (mScroller.computeScrollOffset()) {
                mScrollX = mScroller.getCurrX();
                mScrollY = mScroller.getCurrY();
                invalidateParentCaches();
                postInvalidate();  // So we draw again
            }
        }
    }

    private void getInterestingRect(Rect r, int line) {
        convertFromViewportToContentCoordinates(r);

        // Rectangle can can be expanded on first and last line to take
        // padding into account.
        // TODO Take left/right padding into account too?
        if (line == 0) r.top -= getExtendedPaddingTop();
        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
    }

    private void convertFromViewportToContentCoordinates(Rect r) {
        final int horizontalOffset = viewportToContentHorizontalOffset();
        r.left += horizontalOffset;
        r.right += horizontalOffset;

        final int verticalOffset = viewportToContentVerticalOffset();
        r.top += verticalOffset;
        r.bottom += verticalOffset;
    }

    private int viewportToContentHorizontalOffset() {
        return getCompoundPaddingLeft() - mScrollX;
    }

    private int viewportToContentVerticalOffset() {
        int offset = getExtendedPaddingTop() - mScrollY;
        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
            offset += getVerticalOffset(false);
        }
        return offset;
    }

    @Override
    public void debug(int depth) {
        super.debug(depth);

        String output = debugIndent(depth);
        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
                + "} ";

        if (mText != null) {

            output += "mText=\"" + mText + "\" ";
            if (mLayout != null) {
                output += "mLayout width=" + mLayout.getWidth()
                        + " height=" + mLayout.getHeight();
            }
        } else {
            output += "mText=NULL";
        }
        Log.d(VIEW_LOG_TAG, output);
    }

    /**
     * Convenience for {@link Selection#getSelectionStart}.
     */
    @ViewDebug.ExportedProperty(category = "text")
    public int getSelectionStart() {
        return Selection.getSelectionStart(getText());
    }

    /**
     * Convenience for {@link Selection#getSelectionEnd}.
     */
    @ViewDebug.ExportedProperty(category = "text")
    public int getSelectionEnd() {
        return Selection.getSelectionEnd(getText());
    }

    /**
     * Return true iff there is a selection inside this text view.
     */
    public boolean hasSelection() {
        final int selectionStart = getSelectionStart();
        final int selectionEnd = getSelectionEnd();

        return selectionStart >= 0 && selectionStart != selectionEnd;
    }

    /**
     * Sets the properties of this field (lines, horizontally scrolling,
     * transformation method) to be for a single-line input.
     *
     * @attr ref android.R.styleable#TextView_singleLine
     */
    public void setSingleLine() {
        setSingleLine(true);
    }

    /**
     * Sets the properties of this field to transform input to ALL CAPS
     * display. This may use a "small caps" formatting if available.
     * This setting will be ignored if this field is editable or selectable.
     *
     * This call replaces the current transformation method. Disabling this
     * will not necessarily restore the previous behavior from before this
     * was enabled.
     *
     * @see #setTransformationMethod(TransformationMethod)
     * @attr ref android.R.styleable#TextView_textAllCaps
     */
    public void setAllCaps(boolean allCaps) {
        if (allCaps) {
            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
        } else {
            setTransformationMethod(null);
        }
    }

    /**
     * If true, sets the properties of this field (number of lines, horizontally scrolling,
     * transformation method) to be for a single-line input; if false, restores these to the default
     * conditions.
     *
     * Note that the default conditions are not necessarily those that were in effect prior this
     * method, and you may want to reset these properties to your custom values.
     *
     * @attr ref android.R.styleable#TextView_singleLine
     */
    @android.view.RemotableViewMethod
    public void setSingleLine(boolean singleLine) {
        // Could be used, but may break backward compatibility.
        // if (mSingleLine == singleLine) return;
        setInputTypeSingleLine(singleLine);
        applySingleLine(singleLine, true, true);
    }

    /**
     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
     * @param singleLine
     */
    private void setInputTypeSingleLine(boolean singleLine) {
        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
            if (singleLine) {
                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
            } else {
                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
            }
        }
    }

    private void applySingleLine(boolean singleLine, boolean applyTransformation,
            boolean changeMaxLines) {
        mSingleLine = singleLine;
        if (singleLine) {
            setLines(1);
            setHorizontallyScrolling(true);
            if (applyTransformation) {
                setTransformationMethod(SingleLineTransformationMethod.getInstance());
            }
        } else {
            if (changeMaxLines) {
                setMaxLines(Integer.MAX_VALUE);
            }
            setHorizontallyScrolling(false);
            if (applyTransformation) {
                setTransformationMethod(null);
            }
        }
    }

    /**
     * Causes words in the text that are longer than the view is wide
     * to be ellipsized instead of broken in the middle.  You may also
     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
     * to constrain the text to a single line.  Use <code>null</code>
     * to turn off ellipsizing.
     *
     * If {@link #setMaxLines} has been used to set two or more lines,
     * {@link android.text.TextUtils.TruncateAt#END} and
     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
     * (other ellipsizing types will not do anything).
     *
     * @attr ref android.R.styleable#TextView_ellipsize
     */
    public void setEllipsize(TextUtils.TruncateAt where) {
        // TruncateAt is an enum. != comparison is ok between these singleton objects.
        if (mEllipsize != where) {
            mEllipsize = where;

            if (mLayout != null) {
                nullLayouts();
                requestLayout();
                invalidate();
            }
        }
    }

    /**
     * Sets how many times to repeat the marquee animation. Only applied if the
     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
     *
     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
     */
    public void setMarqueeRepeatLimit(int marqueeLimit) {
        mMarqueeRepeatLimit = marqueeLimit;
    }

    /**
     * Returns where, if anywhere, words that are longer than the view
     * is wide should be ellipsized.
     */
    @ViewDebug.ExportedProperty
    public TextUtils.TruncateAt getEllipsize() {
        return mEllipsize;
    }

    /**
     * Set the TextView so that when it takes focus, all the text is
     * selected.
     *
     * @attr ref android.R.styleable#TextView_selectAllOnFocus
     */
    @android.view.RemotableViewMethod
    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
        mSelectAllOnFocus = selectAllOnFocus;

        if (selectAllOnFocus && !(mText instanceof Spannable)) {
            setText(mText, BufferType.SPANNABLE);
        }
    }

    /**
     * Set whether the cursor is visible.  The default is true.
     *
     * @attr ref android.R.styleable#TextView_cursorVisible
     */
    @android.view.RemotableViewMethod
    public void setCursorVisible(boolean visible) {
        if (mCursorVisible != visible) {
            mCursorVisible = visible;
            invalidate();

            makeBlink();

            // InsertionPointCursorController depends on mCursorVisible
            prepareCursorControllers();
        }
    }

    private boolean isCursorVisible() {
        return mCursorVisible && isTextEditable();
    }

    private boolean canMarquee() {
        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
        return width > 0 && (mLayout.getLineWidth(0) > width ||
                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
    }

    private void startMarquee() {
        // Do not ellipsize EditText
        if (mInput != null) return;

        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
            return;
        }

        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
                getLineCount() == 1 && canMarquee()) {

            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
                final Layout tmp = mLayout;
                mLayout = mSavedMarqueeModeLayout;
                mSavedMarqueeModeLayout = tmp;
                setHorizontalFadingEdgeEnabled(true);
                requestLayout();
                invalidate();
            }

            if (mMarquee == null) mMarquee = new Marquee(this);
            mMarquee.start(mMarqueeRepeatLimit);
        }
    }

    private void stopMarquee() {
        if (mMarquee != null && !mMarquee.isStopped()) {
            mMarquee.stop();
        }

        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
            final Layout tmp = mSavedMarqueeModeLayout;
            mSavedMarqueeModeLayout = mLayout;
            mLayout = tmp;
            setHorizontalFadingEdgeEnabled(false);
            requestLayout();
            invalidate();
        }
    }

    private void startStopMarquee(boolean start) {
        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
            if (start) {
                startMarquee();
            } else {
                stopMarquee();
            }
        }
    }

    private static final class Marquee extends Handler {
        // TODO: Add an option to configure this
        private static final float MARQUEE_DELTA_MAX = 0.07f;
        private static final int MARQUEE_DELAY = 1200;
        private static final int MARQUEE_RESTART_DELAY = 1200;
        private static final int MARQUEE_RESOLUTION = 1000 / 30;
        private static final int MARQUEE_PIXELS_PER_SECOND = 30;

        private static final byte MARQUEE_STOPPED = 0x0;
        private static final byte MARQUEE_STARTING = 0x1;
        private static final byte MARQUEE_RUNNING = 0x2;

        private static final int MESSAGE_START = 0x1;
        private static final int MESSAGE_TICK = 0x2;
        private static final int MESSAGE_RESTART = 0x3;

        private final WeakReference<TextView> mView;

        private byte mStatus = MARQUEE_STOPPED;
        private final float mScrollUnit;
        private float mMaxScroll;
        float mMaxFadeScroll;
        private float mGhostStart;
        private float mGhostOffset;
        private float mFadeStop;
        private int mRepeatLimit;

        float mScroll;

        Marquee(TextView v) {
            final float density = v.getContext().getResources().getDisplayMetrics().density;
            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
            mView = new WeakReference<TextView>(v);
        }

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MESSAGE_START:
                    mStatus = MARQUEE_RUNNING;
                    tick();
                    break;
                case MESSAGE_TICK:
                    tick();
                    break;
                case MESSAGE_RESTART:
                    if (mStatus == MARQUEE_RUNNING) {
                        if (mRepeatLimit >= 0) {
                            mRepeatLimit--;
                        }
                        start(mRepeatLimit);
                    }
                    break;
            }
        }

        void tick() {
            if (mStatus != MARQUEE_RUNNING) {
                return;
            }

            removeMessages(MESSAGE_TICK);

            final TextView textView = mView.get();
            if (textView != null && (textView.isFocused() || textView.isSelected())) {
                mScroll += mScrollUnit;
                if (mScroll > mMaxScroll) {
                    mScroll = mMaxScroll;
                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
                } else {
                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
                }
                textView.invalidate();
            }
        }

        void stop() {
            mStatus = MARQUEE_STOPPED;
            removeMessages(MESSAGE_START);
            removeMessages(MESSAGE_RESTART);
            removeMessages(MESSAGE_TICK);
            resetScroll();
        }

        private void resetScroll() {
            mScroll = 0.0f;
            final TextView textView = mView.get();
            if (textView != null) textView.invalidate();
        }

        void start(int repeatLimit) {
            if (repeatLimit == 0) {
                stop();
                return;
            }
            mRepeatLimit = repeatLimit;
            final TextView textView = mView.get();
            if (textView != null && textView.mLayout != null) {
                mStatus = MARQUEE_STARTING;
                mScroll = 0.0f;
                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
                        textView.getCompoundPaddingRight();
                final float lineWidth = textView.mLayout.getLineWidth(0);
                final float gap = textWidth / 3.0f;
                mGhostStart = lineWidth - textWidth + gap;
                mMaxScroll = mGhostStart + textWidth;
                mGhostOffset = lineWidth + gap;
                mFadeStop = lineWidth + textWidth / 6.0f;
                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;

                textView.invalidate();
                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
            }
        }

        float getGhostOffset() {
            return mGhostOffset;
        }

        boolean shouldDrawLeftFade() {
            return mScroll <= mFadeStop;
        }

        boolean shouldDrawGhost() {
            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
        }

        boolean isRunning() {
            return mStatus == MARQUEE_RUNNING;
        }

        boolean isStopped() {
            return mStatus == MARQUEE_STOPPED;
        }
    }

    /**
     * This method is called when the text is changed, in case any subclasses
     * would like to know.
     *
     * Within <code>text</code>, the <code>lengthAfter</code> characters
     * beginning at <code>start</code> have just replaced old text that had
     * length <code>lengthBefore</code>. It is an error to attempt to make
     * changes to <code>text</code> from this callback.
     *
     * @param text The text the TextView is displaying
     * @param start The offset of the start of the range of the text that was
     * modified
     * @param lengthBefore The length of the former text that has been replaced
     * @param lengthAfter The length of the replacement modified text
     */
    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
        // intentionally empty, template pattern method can be overridden by subclasses
    }

    /**
     * This method is called when the selection has changed, in case any
     * subclasses would like to know.
     * 
     * @param selStart The new selection start location.
     * @param selEnd The new selection end location.
     */
    protected void onSelectionChanged(int selStart, int selEnd) {
        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
        if (mSpellChecker != null) {
            mSpellChecker.onSelectionChanged();
        }
    }

    /**
     * Adds a TextWatcher to the list of those whose methods are called
     * whenever this TextView's text changes.
     * <p>
     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
     * not called after {@link #setText} calls.  Now, doing {@link #setText}
     * if there are any text changed listeners forces the buffer type to
     * Editable if it would not otherwise be and does call this method.
     */
    public void addTextChangedListener(TextWatcher watcher) {
        if (mListeners == null) {
            mListeners = new ArrayList<TextWatcher>();
        }

        mListeners.add(watcher);
    }

    /**
     * Removes the specified TextWatcher from the list of those whose
     * methods are called
     * whenever this TextView's text changes.
     */
    public void removeTextChangedListener(TextWatcher watcher) {
        if (mListeners != null) {
            int i = mListeners.indexOf(watcher);

            if (i >= 0) {
                mListeners.remove(i);
            }
        }
    }

    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
        if (mListeners != null) {
            final ArrayList<TextWatcher> list = mListeners;
            final int count = list.size();
            for (int i = 0; i < count; i++) {
                list.get(i).beforeTextChanged(text, start, before, after);
            }
        }

        // The spans that are inside or intersect the modified region no longer make sense
        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
    }

    // Removes all spans that are inside or actually overlap the start..end range
    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
        if (!(mText instanceof Editable)) return;
        Editable text = (Editable) mText;

        T[] spans = text.getSpans(start, end, type);
        final int length = spans.length;
        for (int i = 0; i < length; i++) {
            final int s = text.getSpanStart(spans[i]);
            final int e = text.getSpanEnd(spans[i]);
            if (e == start || s == end) break;
            text.removeSpan(spans[i]);
        }
    }

    /**
     * Not private so it can be called from an inner class without going
     * through a thunk.
     */
    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
        if (mListeners != null) {
            final ArrayList<TextWatcher> list = mListeners;
            final int count = list.size();
            for (int i = 0; i < count; i++) {
                list.get(i).onTextChanged(text, start, before, after);
            }
        }
    }

    /**
     * Not private so it can be called from an inner class without going
     * through a thunk.
     */
    void sendAfterTextChanged(Editable text) {
        if (mListeners != null) {
            final ArrayList<TextWatcher> list = mListeners;
            final int count = list.size();
            for (int i = 0; i < count; i++) {
                list.get(i).afterTextChanged(text);
            }
        }
    }

    /**
     * Not private so it can be called from an inner class without going
     * through a thunk.
     */
    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
        final InputMethodState ims = mInputMethodState;
        if (ims == null || ims.mBatchEditNesting == 0) {
            updateAfterEdit();
        }
        if (ims != null) {
            ims.mContentChanged = true;
            if (ims.mChangedStart < 0) {
                ims.mChangedStart = start;
                ims.mChangedEnd = start+before;
            } else {
                ims.mChangedStart = Math.min(ims.mChangedStart, start);
                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
            }
            ims.mChangedDelta += after-before;
        }
        
        sendOnTextChanged(buffer, start, before, after);
        onTextChanged(buffer, start, before, after);

        // The WordIterator text change listener may be called after this one.
        // Make sure this changed text is rescanned before the iterator is used on it.
        getWordIterator().forceUpdate();
        updateSpellCheckSpans(start, start + after);

        // Hide the controllers if the amount of content changed
        if (before != after) {
            // We do not hide the span controllers, as they can be added when a new text is
            // inserted into the text view
            hideCursorControllers();
        }
    }
    
    /**
     * Not private so it can be called from an inner class without going
     * through a thunk.
     */
    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
        // XXX Make the start and end move together if this ends up
        // spending too much time invalidating.

        boolean selChanged = false;
        int newSelStart=-1, newSelEnd=-1;
        
        final InputMethodState ims = mInputMethodState;
        
        if (what == Selection.SELECTION_END) {
            mHighlightPathBogus = true;
            selChanged = true;
            newSelEnd = newStart;

            if (!isFocused()) {
                mSelectionMoved = true;
            }

            if (oldStart >= 0 || newStart >= 0) {
                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
                registerForPreDraw();
                makeBlink();
            }
        }

        if (what == Selection.SELECTION_START) {
            mHighlightPathBogus = true;
            selChanged = true;
            newSelStart = newStart;

            if (!isFocused()) {
                mSelectionMoved = true;
            }

            if (oldStart >= 0 || newStart >= 0) {
                int end = Selection.getSelectionEnd(buf);
                invalidateCursor(end, oldStart, newStart);
            }
        }

        if (selChanged) {
            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
                if (newSelStart < 0) {
                    newSelStart = Selection.getSelectionStart(buf);
                }
                if (newSelEnd < 0) {
                    newSelEnd = Selection.getSelectionEnd(buf);
                }
                onSelectionChanged(newSelStart, newSelEnd);
            }
        }
        
        if (what instanceof UpdateAppearance ||
            what instanceof ParagraphStyle) {
            if (ims == null || ims.mBatchEditNesting == 0) {
                invalidate();
                mHighlightPathBogus = true;
                checkForResize();
            } else {
                ims.mContentChanged = true;
            }
        }

        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
            mHighlightPathBogus = true;
            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
                ims.mSelectionModeChanged = true;
            }

            if (Selection.getSelectionStart(buf) >= 0) {
                if (ims == null || ims.mBatchEditNesting == 0) {
                    invalidateCursor();
                } else {
                    ims.mCursorChanged = true;
                }
            }
        }

        if (what instanceof ParcelableSpan) {
            // If this is a span that can be sent to a remote process,
            // the current extract editor would be interested in it.
            if (ims != null && ims.mExtracting != null) {
                if (ims.mBatchEditNesting != 0) {
                    if (oldStart >= 0) {
                        if (ims.mChangedStart > oldStart) {
                            ims.mChangedStart = oldStart;
                        }
                        if (ims.mChangedStart > oldEnd) {
                            ims.mChangedStart = oldEnd;
                        }
                    }
                    if (newStart >= 0) {
                        if (ims.mChangedStart > newStart) {
                            ims.mChangedStart = newStart;
                        }
                        if (ims.mChangedStart > newEnd) {
                            ims.mChangedStart = newEnd;
                        }
                    }
                } else {
                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
                            + oldStart + "-" + oldEnd + ","
                            + newStart + "-" + newEnd + what);
                    ims.mContentChanged = true;
                }
            }
        }

        if (what instanceof SpellCheckSpan) {
            if (newStart < 0) {
                getSpellChecker().removeSpellCheckSpan((SpellCheckSpan) what);
            } else if (oldStart < 0) {
                getSpellChecker().addSpellCheckSpan((SpellCheckSpan) what);
            }
        }
    }

    /**
     * Create new SpellCheckSpans on the modified region.
     */
    private void updateSpellCheckSpans(int start, int end) {
        if (!(mText instanceof Editable) || !isSuggestionsEnabled()) return;
        Editable text = (Editable) mText;

        WordIterator wordIterator = getWordIterator();
        wordIterator.setCharSequence(text);

        // Move back to the beginning of the current word, if any
        int wordStart = wordIterator.preceding(start);
        int wordEnd;
        if (wordStart == BreakIterator.DONE) {
            wordEnd = wordIterator.following(start);
            if (wordEnd != BreakIterator.DONE) {
                wordStart = wordIterator.getBeginning(wordEnd);
            }
        } else {
            wordEnd = wordIterator.getEnd(wordStart);
        }
        if (wordEnd == BreakIterator.DONE) {
            return;
        }

        // Iterate over the newly added text and schedule new SpellCheckSpans
        while (wordStart <= end) {
            if (wordEnd >= start) {
                // A word across the interval boundaries must remove boundary edition spans
                if (wordStart < start && wordEnd > start) {
                    removeEditionSpansAt(start, text);
                }

                if (wordStart < end && wordEnd > end) {
                    removeEditionSpansAt(end, text);
                }

                // Do not create new boundary spans if they already exist
                boolean createSpellCheckSpan = true;
                if (wordEnd == start) {
                    SpellCheckSpan[] spellCheckSpans = text.getSpans(start, start,
                            SpellCheckSpan.class);
                    if (spellCheckSpans.length > 0) createSpellCheckSpan = false;
                }

                if (wordStart == end) {
                    SpellCheckSpan[] spellCheckSpans = text.getSpans(end, end,
                            SpellCheckSpan.class);
                    if (spellCheckSpans.length > 0) createSpellCheckSpan = false;
                }

                if (createSpellCheckSpan) {
                    text.setSpan(new SpellCheckSpan(), wordStart, wordEnd,
                            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                }
            }

            // iterate word by word
            wordEnd = wordIterator.following(wordEnd);
            if (wordEnd == BreakIterator.DONE) return;
            wordStart = wordIterator.getBeginning(wordEnd);
            if (wordStart == BreakIterator.DONE) {
                Log.e(LOG_TAG, "Unable to find word beginning from " + wordEnd + "in " + mText);
                return;
            }
        }
    }

    private static void removeEditionSpansAt(int offset, Editable text) {
        SuggestionSpan[] suggestionSpans = text.getSpans(offset, offset, SuggestionSpan.class);
        for (int i = 0; i < suggestionSpans.length; i++) {
            text.removeSpan(suggestionSpans[i]);
        }
        SpellCheckSpan[] spellCheckSpans = text.getSpans(offset, offset, SpellCheckSpan.class);
        for (int i = 0; i < spellCheckSpans.length; i++) {
            text.removeSpan(spellCheckSpans[i]);
        }
    }

    /**
     * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related
     * pop-up should be displayed.
     */
    private class EasyEditSpanController {

        private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs

        private EasyEditPopupWindow mPopupWindow;

        private EasyEditSpan mEasyEditSpan;

        private Runnable mHidePopup;

        private void hide() {
            if (mPopupWindow != null) {
                mPopupWindow.hide();
                TextView.this.removeCallbacks(mHidePopup);
            }
            removeSpans(mText);
            mEasyEditSpan = null;
        }

        /**
         * Monitors the changes in the text.
         *
         * <p>{@link ChangeWatcher#onSpanAdded(Spannable, Object, int, int)} cannot be used,
         * as the notifications are not sent when a spannable (with spans) is inserted.
         */
        public void onTextChange(CharSequence buffer) {
            adjustSpans(mText);

            if (getWindowVisibility() != View.VISIBLE) {
                // The window is not visible yet, ignore the text change.
                return;
            }

            if (mLayout == null) {
                // The view has not been layout yet, ignore the text change
                return;
            }

            InputMethodManager imm = InputMethodManager.peekInstance();
            if (!(TextView.this instanceof ExtractEditText)
                    && imm != null && imm.isFullscreenMode()) {
                // The input is in extract mode. We do not have to handle the easy edit in the
                // original TextView, as the ExtractEditText will do
                return;
            }

            // Remove the current easy edit span, as the text changed, and remove the pop-up
            // (if any)
            if (mEasyEditSpan != null) {
                if (mText instanceof Spannable) {
                    ((Spannable) mText).removeSpan(mEasyEditSpan);
                }
                mEasyEditSpan = null;
            }
            if (mPopupWindow != null && mPopupWindow.isShowing()) {
                mPopupWindow.hide();
            }

            // Display the new easy edit span (if any).
            if (buffer instanceof Spanned) {
                mEasyEditSpan = getSpan((Spanned) buffer);
                if (mEasyEditSpan != null) {
                    if (mPopupWindow == null) {
                        mPopupWindow = new EasyEditPopupWindow();
                        mHidePopup = new Runnable() {
                            @Override
                            public void run() {
                                hide();
                            }
                        };
                    }
                    mPopupWindow.show(mEasyEditSpan);
                    TextView.this.removeCallbacks(mHidePopup);
                    TextView.this.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS);
                }
            }
        }

        /**
         * Adjusts the spans by removing all of them except the last one.
         */
        private void adjustSpans(CharSequence buffer) {
            // This method enforces that only one easy edit span is attached to the text.
            // A better way to enforce this would be to listen for onSpanAdded, but this method
            // cannot be used in this scenario as no notification is triggered when a text with
            // spans is inserted into a text.
            if (buffer instanceof Spannable) {
                Spannable spannable = (Spannable) buffer;
                EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(),
                        EasyEditSpan.class);
                for (int i = 0; i < spans.length - 1; i++) {
                    spannable.removeSpan(spans[i]);
                }
            }
        }

        /**
         * Removes all the {@link EasyEditSpan} currently attached.
         */
        private void removeSpans(CharSequence buffer) {
            if (buffer instanceof Spannable) {
                Spannable spannable = (Spannable) buffer;
                EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(),
                        EasyEditSpan.class);
                for (int i = 0; i < spans.length; i++) {
                    spannable.removeSpan(spans[i]);
                }
            }
        }

        private EasyEditSpan getSpan(Spanned spanned) {
            EasyEditSpan[] easyEditSpans = spanned.getSpans(0, spanned.length(),
                    EasyEditSpan.class);
            if (easyEditSpans.length == 0) {
                return null;
            } else {
                return easyEditSpans[0];
            }
        }
    }

    /**
     * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled
     * by {@link EasyEditSpanController}.
     */
    private class EasyEditPopupWindow extends PinnedPopupWindow
            implements OnClickListener {
        private static final int POPUP_TEXT_LAYOUT =
                com.android.internal.R.layout.text_edit_action_popup_text;
        private TextView mDeleteTextView;
        private EasyEditSpan mEasyEditSpan;

        @Override
        protected void createPopupWindow() {
            mPopupWindow = new PopupWindow(TextView.this.mContext, null,
                    com.android.internal.R.attr.textSelectHandleWindowStyle);
            mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
            mPopupWindow.setClippingEnabled(true);
        }

        @Override
        protected void initContentView() {
            LinearLayout linearLayout = new LinearLayout(TextView.this.getContext());
            linearLayout.setOrientation(LinearLayout.HORIZONTAL);
            mContentView = linearLayout;
            mContentView.setBackgroundResource(
                    com.android.internal.R.drawable.text_edit_side_paste_window);

            LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            LayoutParams wrapContent = new LayoutParams(
                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

            mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
            mDeleteTextView.setLayoutParams(wrapContent);
            mDeleteTextView.setText(com.android.internal.R.string.delete);
            mDeleteTextView.setOnClickListener(this);
            mContentView.addView(mDeleteTextView);
        }

        public void show(EasyEditSpan easyEditSpan) {
            mEasyEditSpan = easyEditSpan;
            super.show();
        }

        @Override
        public void onClick(View view) {
            if (view == mDeleteTextView) {
                deleteText();
            }
        }

        private void deleteText() {
            Editable editable = (Editable) mText;
            int start = editable.getSpanStart(mEasyEditSpan);
            int end = editable.getSpanEnd(mEasyEditSpan);
            if (start >= 0 && end >= 0) {
                editable.delete(start, end);
            }
        }

        @Override
        protected int getTextOffset() {
            // Place the pop-up at the end of the span
            Editable editable = (Editable) mText;
            return editable.getSpanEnd(mEasyEditSpan);
        }

        @Override
        protected int getVerticalLocalPosition(int line) {
            return mLayout.getLineBottom(line);
        }

        @Override
        protected int clipVertically(int positionY) {
            // As we display the pop-up below the span, no vertical clipping is required.
            return positionY;
        }
    }

    private class ChangeWatcher implements TextWatcher, SpanWatcher {

        private CharSequence mBeforeText;

        private EasyEditSpanController mEasyEditSpanController;

        private ChangeWatcher() {
            mEasyEditSpanController = new EasyEditSpanController();
        }

        public void beforeTextChanged(CharSequence buffer, int start,
                                      int before, int after) {
            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
                    + " before=" + before + " after=" + after + ": " + buffer);

            if (AccessibilityManager.getInstance(mContext).isEnabled()
                    && !isPasswordInputType(mInputType)
                    && !hasPasswordTransformationMethod()) {
                mBeforeText = buffer.toString();
            }

            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
        }

        public void onTextChanged(CharSequence buffer, int start,
                                  int before, int after) {
            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
                    + " before=" + before + " after=" + after + ": " + buffer);
            TextView.this.handleTextChanged(buffer, start, before, after);

            mEasyEditSpanController.onTextChange(buffer);

            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
                    (isFocused() || isSelected() && isShown())) {
                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
                mBeforeText = null;
            }
        }

        public void afterTextChanged(Editable buffer) {
            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
            TextView.this.sendAfterTextChanged(buffer);

            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
            }
        }

        public void onSpanChanged(Spannable buf,
                                  Object what, int s, int e, int st, int en) {
            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
            TextView.this.spanChange(buf, what, s, st, e, en);
        }

        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
                    + " what=" + what + ": " + buf);
            TextView.this.spanChange(buf, what, -1, s, -1, e);
        }

        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
                    + " what=" + what + ": " + buf);
            TextView.this.spanChange(buf, what, s, -1, e, -1);
        }

        private void hideControllers() {
            mEasyEditSpanController.hide();
        }
    }

    /**
     * @hide
     */
    @Override
    public void dispatchFinishTemporaryDetach() {
        mDispatchTemporaryDetach = true;
        super.dispatchFinishTemporaryDetach();
        mDispatchTemporaryDetach = false;
    }

    @Override
    public void onStartTemporaryDetach() {
        super.onStartTemporaryDetach();
        // Only track when onStartTemporaryDetach() is called directly,
        // usually because this instance is an editable field in a list
        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;

        // Because of View recycling in ListView, there is no easy way to know when a TextView with
        // selection becomes visible again. Until a better solution is found, stop text selection
        // mode (if any) as soon as this TextView is recycled.
        hideControllers();
    }

    @Override
    public void onFinishTemporaryDetach() {
        super.onFinishTemporaryDetach();
        // Only track when onStartTemporaryDetach() is called directly,
        // usually because this instance is an editable field in a list
        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
    }

    @Override
    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
        if (mTemporaryDetach) {
            // If we are temporarily in the detach state, then do nothing.
            super.onFocusChanged(focused, direction, previouslyFocusedRect);
            return;
        }
        
        mShowCursor = SystemClock.uptimeMillis();

        ensureEndedBatchEdit();

        if (focused) {
            int selStart = getSelectionStart();
            int selEnd = getSelectionEnd();

            // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection
            // mode for these, unless there was a specific selection already started.
            final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 &&
                    selEnd == mText.length();
            mCreatedWithASelection = mFrozenWithFocus && hasSelection() && !isFocusHighlighted;

            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
                // If a tap was used to give focus to that view, move cursor at tap position.
                // Has to be done before onTakeFocus, which can be overloaded.
                final int lastTapPosition = getLastTapPosition();
                if (lastTapPosition >= 0) {
                    Selection.setSelection((Spannable) mText, lastTapPosition);
                }

                if (mMovement != null) {
                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
                }

                // The DecorView does not have focus when the 'Done' ExtractEditText button is
                // pressed. Since it is the ViewAncestor's mView, it requests focus before
                // ExtractEditText clears focus, which gives focus to the ExtractEditText.
                // This special case ensure that we keep current selection in that case.
                // It would be better to know why the DecorView does not have focus at that time.
                if (((this instanceof ExtractEditText) || mSelectionMoved) &&
                        selStart >= 0 && selEnd >= 0) {
                    /*
                     * Someone intentionally set the selection, so let them
                     * do whatever it is that they wanted to do instead of
                     * the default on-focus behavior.  We reset the selection
                     * here instead of just skipping the onTakeFocus() call
                     * because some movement methods do something other than
                     * just setting the selection in theirs and we still
                     * need to go through that path.
                     */
                    Selection.setSelection((Spannable) mText, selStart, selEnd);
                }

                if (mSelectAllOnFocus) {
                    selectAll();
                }

                mTouchFocusSelected = true;
            }

            mFrozenWithFocus = false;
            mSelectionMoved = false;

            if (mText instanceof Spannable) {
                Spannable sp = (Spannable) mText;
                MetaKeyKeyListener.resetMetaState(sp);
            }

            makeBlink();

            if (mError != null) {
                showError();
            }
        } else {
            if (mError != null) {
                hideError();
            }
            // Don't leave us in the middle of a batch edit.
            onEndBatchEdit();

            if (this instanceof ExtractEditText) {
                // terminateTextSelectionMode removes selection, which we want to keep when
                // ExtractEditText goes out of focus.
                final int selStart = getSelectionStart();
                final int selEnd = getSelectionEnd();
                hideControllers();
                Selection.setSelection((Spannable) mText, selStart, selEnd);
            } else {
                hideControllers();
                downgradeEasyCorrectionSpans();
            }

            // No need to create the controller
            if (mSelectionModifierCursorController != null) {
                mSelectionModifierCursorController.resetTouchOffsets();
            }
        }

        startStopMarquee(focused);

        if (mTransformation != null) {
            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
        }

        super.onFocusChanged(focused, direction, previouslyFocusedRect);
    }

    private int getLastTapPosition() {
        // No need to create the controller at that point, no last tap position saved
        if (mSelectionModifierCursorController != null) {
            int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset();
            if (lastTapPosition >= 0) {
                // Safety check, should not be possible.
                if (lastTapPosition > mText.length()) {
                    Log.e(LOG_TAG, "Invalid tap focus position (" + lastTapPosition + " vs "
                            + mText.length() + ")");
                    lastTapPosition = mText.length();
                }
                return lastTapPosition;
            }
        }

        return -1;
    }

    @Override
    public void onWindowFocusChanged(boolean hasWindowFocus) {
        super.onWindowFocusChanged(hasWindowFocus);

        if (hasWindowFocus) {
            if (mBlink != null) {
                mBlink.uncancel();
                makeBlink();
            }
        } else {
            if (mBlink != null) {
                mBlink.cancel();
            }
            // Don't leave us in the middle of a batch edit.
            onEndBatchEdit();
            if (mInputContentType != null) {
                mInputContentType.enterDown = false;
            }

            hideControllers();
        }

        startStopMarquee(hasWindowFocus);
    }

    @Override
    protected void onVisibilityChanged(View changedView, int visibility) {
        super.onVisibilityChanged(changedView, visibility);
        if (visibility != VISIBLE) {
            hideControllers();
        }
    }

    /**
     * Use {@link BaseInputConnection#removeComposingSpans
     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
     * state from this text view.
     */
    public void clearComposingText() {
        if (mText instanceof Spannable) {
            BaseInputConnection.removeComposingSpans((Spannable)mText);
        }
    }
    
    @Override
    public void setSelected(boolean selected) {
        boolean wasSelected = isSelected();

        super.setSelected(selected);

        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
            if (selected) {
                startMarquee();
            } else {
                stopMarquee();
            }
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        final int action = event.getActionMasked();

        if (hasSelectionController()) {
            getSelectionController().onTouchEvent(event);
        }

        if (action == MotionEvent.ACTION_DOWN) {
            mLastDownPositionX = event.getX();
            mLastDownPositionY = event.getY();

            // Reset this state; it will be re-set if super.onTouchEvent
            // causes focus to move to the view.
            mTouchFocusSelected = false;
            mIgnoreActionUpEvent = false;
        }

        final boolean superResult = super.onTouchEvent(event);

        /*
         * Don't handle the release after a long press, because it will
         * move the selection away from whatever the menu action was
         * trying to affect.
         */
        if (mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
            mDiscardNextActionUp = false;
            return superResult;
        }

        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
                !shouldIgnoreActionUpEvent() && isFocused();

         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
                && mText instanceof Spannable && mLayout != null) {
            boolean handled = false;

            if (mMovement != null) {
                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
            }

            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && mTextIsSelectable) {
                // The LinkMovementMethod which should handle taps on links has not been installed
                // on non editable text that support text selection.
                // We reproduce its behavior here to open links for these.
                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
                        getSelectionEnd(), ClickableSpan.class);

                if (links.length != 0) {
                    links[0].onClick(this);
                    handled = true;
                }
            }

            if (touchIsFinished && (isTextEditable() || mTextIsSelectable)) {
                // Show the IME, except when selecting in read-only text.
                final InputMethodManager imm = InputMethodManager.peekInstance();
                viewClicked(imm);
                if (!mTextIsSelectable) {
                    handled |= imm != null && imm.showSoftInput(this, 0);
                }

                boolean selectAllGotFocus = mSelectAllOnFocus && didTouchFocusSelect();
                hideControllers();
                if (!selectAllGotFocus && mText.length() > 0) {
                    if (isCursorInsideEasyCorrectionSpan()) {
                        showSuggestions();
                    } else if (hasInsertionController()) {
                        getInsertionController().show();
                    }
                }

                handled = true;
            }

            if (handled) {
                return true;
            }
        }

        return superResult;
    }

    /**
     * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}.
     */
    private boolean isCursorInsideSuggestionSpan() {
        if (!(mText instanceof Spannable)) return false;

        SuggestionSpan[] suggestionSpans = ((Spannable) mText).getSpans(getSelectionStart(),
                getSelectionEnd(), SuggestionSpan.class);
        return (suggestionSpans.length > 0);
    }

    /**
     * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with
     * {@link SuggestionSpan#FLAG_EASY_CORRECT} set.
     */
    private boolean isCursorInsideEasyCorrectionSpan() {
        Spannable spannable = (Spannable) mText;
        SuggestionSpan[] suggestionSpans = spannable.getSpans(getSelectionStart(),
                getSelectionEnd(), SuggestionSpan.class);
        for (int i = 0; i < suggestionSpans.length; i++) {
            if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) {
                return true;
            }
        }
        return false;
    }

    /**
     * Downgrades to simple suggestions all the easy correction spans that are not a spell check
     * span.
     */
    private void downgradeEasyCorrectionSpans() {
        if (mText instanceof Spannable) {
            Spannable spannable = (Spannable) mText;
            SuggestionSpan[] suggestionSpans = spannable.getSpans(0,
                    spannable.length(), SuggestionSpan.class);
            for (int i = 0; i < suggestionSpans.length; i++) {
                int flags = suggestionSpans[i].getFlags();
                if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
                        && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) {
                    flags = flags & ~SuggestionSpan.FLAG_EASY_CORRECT;
                    suggestionSpans[i].setFlags(flags);
                }
            }
        }
    }

    @Override
    public boolean onGenericMotionEvent(MotionEvent event) {
        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
            try {
                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
                    return true;
                }
            } catch (AbstractMethodError ex) {
                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
                // Ignore its absence in case third party applications implemented the
                // interface directly.
            }
        }
        return super.onGenericMotionEvent(event);
    }

    private void prepareCursorControllers() {
        boolean windowSupportsHandles = false;

        ViewGroup.LayoutParams params = getRootView().getLayoutParams();
        if (params instanceof WindowManager.LayoutParams) {
            WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params;
            windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW
                    || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW;
        }

        mInsertionControllerEnabled = windowSupportsHandles && isCursorVisible() && mLayout != null;
        mSelectionControllerEnabled = windowSupportsHandles && textCanBeSelected() &&
                mLayout != null;

        if (!mInsertionControllerEnabled) {
            hideInsertionPointCursorController();
            if (mInsertionPointCursorController != null) {
                mInsertionPointCursorController.onDetached();
                mInsertionPointCursorController = null;
            }
        }

        if (!mSelectionControllerEnabled) {
            stopSelectionActionMode();
            if (mSelectionModifierCursorController != null) {
                mSelectionModifierCursorController.onDetached();
                mSelectionModifierCursorController = null;
            }
        }
    }

    /**
     * @return True iff this TextView contains a text that can be edited, or if this is
     * a selectable TextView.
     */
    private boolean isTextEditable() {
        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
    }

    /**
     * Returns true, only while processing a touch gesture, if the initial
     * touch down event caused focus to move to the text view and as a result
     * its selection changed.  Only valid while processing the touch gesture
     * of interest.
     */
    public boolean didTouchFocusSelect() {
        return mTouchFocusSelected;
    }
    
    @Override
    public void cancelLongPress() {
        super.cancelLongPress();
        mIgnoreActionUpEvent = true;
    }

    /**
     * This method is only valid during a touch event.
     *
     * @return true when the ACTION_UP event should be ignored, false otherwise.
     *
     * @hide
     */
    public boolean shouldIgnoreActionUpEvent() {
        return mIgnoreActionUpEvent;
    }

    @Override
    public boolean onTrackballEvent(MotionEvent event) {
        if (mMovement != null && mText instanceof Spannable &&
            mLayout != null) {
            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
                return true;
            }
        }

        return super.onTrackballEvent(event);
    }

    public void setScroller(Scroller s) {
        mScroller = s;
    }

    private static class Blink extends Handler implements Runnable {
        private final WeakReference<TextView> mView;
        private boolean mCancelled;

        public Blink(TextView v) {
            mView = new WeakReference<TextView>(v);
        }

        public void run() {
            if (mCancelled) {
                return;
            }

            removeCallbacks(Blink.this);

            TextView tv = mView.get();

            if (tv != null && tv.shouldBlink()) {
                if (tv.mLayout != null) {
                    tv.invalidateCursorPath();
                }

                postAtTime(this, SystemClock.uptimeMillis() + BLINK);
            }
        }

        void cancel() {
            if (!mCancelled) {
                removeCallbacks(Blink.this);
                mCancelled = true;
            }
        }

        void uncancel() {
            mCancelled = false;
        }
    }

    /**
     * @return True when the TextView isFocused and has a valid zero-length selection (cursor).
     */
    private boolean shouldBlink() {
        if (!isFocused()) return false;

        final int start = getSelectionStart();
        if (start < 0) return false;

        final int end = getSelectionEnd();
        if (end < 0) return false;

        return start == end;
    }

    private void makeBlink() {
        if (isCursorVisible()) {
            if (shouldBlink()) {
                mShowCursor = SystemClock.uptimeMillis();
                if (mBlink == null) mBlink = new Blink(this);
                mBlink.removeCallbacks(mBlink);
                mBlink.postAtTime(mBlink, mShowCursor + BLINK);
            }
        } else {
            if (mBlink != null) mBlink.removeCallbacks(mBlink);
        }
    }

    @Override
    protected float getLeftFadingEdgeStrength() {
        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
            if (mMarquee != null && !mMarquee.isStopped()) {
                final Marquee marquee = mMarquee;
                if (marquee.shouldDrawLeftFade()) {
                    return marquee.mScroll / getHorizontalFadingEdgeLength();
                } else {
                    return 0.0f;
                }
            } else if (getLineCount() == 1) {
                final int layoutDirection = getResolvedLayoutDirection();
                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
                    case Gravity.LEFT:
                        return 0.0f;
                    case Gravity.RIGHT:
                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
                    case Gravity.CENTER_HORIZONTAL:
                        return 0.0f;
                }
            }
        }
        return super.getLeftFadingEdgeStrength();
    }

    @Override
    protected float getRightFadingEdgeStrength() {
        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
            if (mMarquee != null && !mMarquee.isStopped()) {
                final Marquee marquee = mMarquee;
                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
            } else if (getLineCount() == 1) {
                final int layoutDirection = getResolvedLayoutDirection();
                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
                    case Gravity.LEFT:
                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
                                getCompoundPaddingRight();
                        final float lineWidth = mLayout.getLineWidth(0);
                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
                    case Gravity.RIGHT:
                        return 0.0f;
                    case Gravity.CENTER_HORIZONTAL:
                    case Gravity.FILL_HORIZONTAL:
                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
                                getHorizontalFadingEdgeLength();
                }
            }
        }
        return super.getRightFadingEdgeStrength();
    }

    @Override
    protected int computeHorizontalScrollRange() {
        if (mLayout != null) {
            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
        }

        return super.computeHorizontalScrollRange();
    }

    @Override
    protected int computeVerticalScrollRange() {
        if (mLayout != null)
            return mLayout.getHeight();

        return super.computeVerticalScrollRange();
    }

    @Override
    protected int computeVerticalScrollExtent() {
        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
    }

    @Override
    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
        super.findViewsWithText(outViews, searched, flags);
        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
            String searchedLowerCase = searched.toString().toLowerCase();
            String textLowerCase = mText.toString().toLowerCase();
            if (textLowerCase.contains(searchedLowerCase)) {
                outViews.add(this);
            }
        }
    }

    public enum BufferType {
        NORMAL, SPANNABLE, EDITABLE,
    }

    /**
     * Returns the TextView_textColor attribute from the
     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
     * from the TextView_textAppearance attribute, if TextView_textColor
     * was not set directly.
     */
    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
        ColorStateList colors;
        colors = attrs.getColorStateList(com.android.internal.R.styleable.
                                         TextView_textColor);

        if (colors == null) {
            int ap = attrs.getResourceId(com.android.internal.R.styleable.
                                         TextView_textAppearance, -1);
            if (ap != -1) {
                TypedArray appearance;
                appearance = context.obtainStyledAttributes(ap,
                                            com.android.internal.R.styleable.TextAppearance);
                colors = appearance.getColorStateList(com.android.internal.R.styleable.
                                                  TextAppearance_textColor);
                appearance.recycle();
            }
        }

        return colors;
    }

    /**
     * Returns the default color from the TextView_textColor attribute
     * from the AttributeSet, if set, or the default color from the
     * TextAppearance_textColor from the TextView_textAppearance attribute,
     * if TextView_textColor was not set directly.
     */
    public static int getTextColor(Context context,
                                   TypedArray attrs,
                                   int def) {
        ColorStateList colors = getTextColors(context, attrs);

        if (colors == null) {
            return def;
        } else {
            return colors.getDefaultColor();
        }
    }

    @Override
    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
            switch (keyCode) {
            case KeyEvent.KEYCODE_A:
                if (canSelectText()) {
                    return onTextContextMenuItem(ID_SELECT_ALL);
                }
                break;
            case KeyEvent.KEYCODE_X:
                if (canCut()) {
                    return onTextContextMenuItem(ID_CUT);
                }
                break;
            case KeyEvent.KEYCODE_C:
                if (canCopy()) {
                    return onTextContextMenuItem(ID_COPY);
                }
                break;
            case KeyEvent.KEYCODE_V:
                if (canPaste()) {
                    return onTextContextMenuItem(ID_PASTE);
                }
                break;
            }
        }
        return super.onKeyShortcut(keyCode, event);
    }

    /**
     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
     * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient.
     */
    private boolean canSelectText() {
        return hasSelectionController() && mText.length() != 0;
    }

    /**
     * Test based on the <i>intrinsic</i> charateristics of the TextView.
     * The text must be spannable and the movement method must allow for arbitary selection.
     * 
     * See also {@link #canSelectText()}.
     */
    private boolean textCanBeSelected() {
        // prepareCursorController() relies on this method.
        // If you change this condition, make sure prepareCursorController is called anywhere
        // the value of this condition might be changed.
        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
        return isTextEditable() || (mTextIsSelectable && mText instanceof Spannable && isEnabled());
    }

    private boolean canCut() {
        if (hasPasswordTransformationMethod()) {
            return false;
        }

        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mInput != null) {
            return true;
        }

        return false;
    }

    private boolean canCopy() {
        if (hasPasswordTransformationMethod()) {
            return false;
        }

        if (mText.length() > 0 && hasSelection()) {
            return true;
        }

        return false;
    }

    private boolean canPaste() {
        return (mText instanceof Editable &&
                mInput != null &&
                getSelectionStart() >= 0 &&
                getSelectionEnd() >= 0 &&
                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
                hasPrimaryClip());
    }

    private static long packRangeInLong(int start, int end) {
        return (((long) start) << 32) | end;
    }

    private static int extractRangeStartFromLong(long range) {
        return (int) (range >>> 32);
    }

    private static int extractRangeEndFromLong(long range) {
        return (int) (range & 0x00000000FFFFFFFFL);
    }

    private boolean selectAll() {
        final int length = mText.length();
        Selection.setSelection((Spannable) mText, 0, length);
        return length > 0;
    }

    /**
     * Adjusts selection to the word under last touch offset.
     * Return true if the operation was successfully performed.
     */
    private boolean selectCurrentWord() {
        if (!canSelectText()) {
            return false;
        }

        if (hasPasswordTransformationMethod()) {
            // Always select all on a password field.
            // Cut/copy menu entries are not available for passwords, but being able to select all
            // is however useful to delete or paste to replace the entire content.
            return selectAll();
        }

        int klass = mInputType & InputType.TYPE_MASK_CLASS;
        int variation = mInputType & InputType.TYPE_MASK_VARIATION;

        // Specific text field types: select the entire text for these
        if (klass == InputType.TYPE_CLASS_NUMBER ||
                klass == InputType.TYPE_CLASS_PHONE ||
                klass == InputType.TYPE_CLASS_DATETIME ||
                variation == InputType.TYPE_TEXT_VARIATION_URI ||
                variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
                variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS ||
                variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
            return selectAll();
        }

        long lastTouchOffsets = getLastTouchOffsets();
        final int minOffset = extractRangeStartFromLong(lastTouchOffsets);
        final int maxOffset = extractRangeEndFromLong(lastTouchOffsets);

        // Safety check in case standard touch event handling has been bypassed
        if (minOffset < 0 || minOffset >= mText.length()) return false;
        if (maxOffset < 0 || maxOffset >= mText.length()) return false;

        int selectionStart, selectionEnd;

        // If a URLSpan (web address, email, phone...) is found at that position, select it.
        URLSpan[] urlSpans = ((Spanned) mText).getSpans(minOffset, maxOffset, URLSpan.class);
        if (urlSpans.length == 1) {
            URLSpan url = urlSpans[0];
            selectionStart = ((Spanned) mText).getSpanStart(url);
            selectionEnd = ((Spanned) mText).getSpanEnd(url);
        } else {
            WordIterator wordIterator = getWordIterator();
            // WordIterator handles text changes, this is a no-op if text in unchanged.
            wordIterator.setCharSequence(mText);

            selectionStart = wordIterator.getBeginning(minOffset);
            if (selectionStart == BreakIterator.DONE) return false;

            selectionEnd = wordIterator.getEnd(maxOffset);
            if (selectionEnd == BreakIterator.DONE) return false;
        }

        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
        return true;
    }

    WordIterator getWordIterator() {
        if (mWordIterator == null) {
            mWordIterator = new WordIterator();
        }
        return mWordIterator;
    }

    private SpellChecker getSpellChecker() {
        if (mSpellChecker == null) {
            mSpellChecker = new SpellChecker(this);
        }
        return mSpellChecker;
    }

    private long getLastTouchOffsets() {
        int minOffset, maxOffset;

        if (mContextMenuTriggeredByKey) {
            minOffset = getSelectionStart();
            maxOffset = getSelectionEnd();
        } else {
            SelectionModifierCursorController selectionController = getSelectionController();
            minOffset = selectionController.getMinTouchOffset();
            maxOffset = selectionController.getMaxTouchOffset();
        }

        return packRangeInLong(minOffset, maxOffset);
    }

    @Override
    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
        super.onPopulateAccessibilityEvent(event);

        final boolean isPassword = hasPasswordTransformationMethod();
        if (!isPassword) {
            CharSequence text = getTextForAccessibility();
            if (TextUtils.isEmpty(text)) {
                event.getText().add(text);
            }
        }
    }

    @Override
    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
        super.onInitializeAccessibilityEvent(event);

        final boolean isPassword = hasPasswordTransformationMethod();
        event.setPassword(isPassword);

        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
            event.setFromIndex(Selection.getSelectionStart(mText));
            event.setToIndex(Selection.getSelectionEnd(mText));
            event.setItemCount(mText.length());
        }
    }

    @Override
    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
        super.onInitializeAccessibilityNodeInfo(info);

        final boolean isPassword = hasPasswordTransformationMethod();
        if (!isPassword) {
            info.setText(getTextForAccessibility());
        }
        info.setPassword(isPassword);
    }

    @Override
    public void sendAccessibilityEvent(int eventType) {
        // Do not send scroll events since first they are not interesting for
        // accessibility and second such events a generated too frequently.
        // For details see the implementation of bringTextIntoView().
        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
            return;
        }
        super.sendAccessibilityEvent(eventType);
    }

    /**
     * Gets the text reported for accessibility purposes. It is the
     * text if not empty or the hint.
     *
     * @return The accessibility text.
     */
    private CharSequence getTextForAccessibility() {
        CharSequence text = getText();
        if (TextUtils.isEmpty(text)) {
            text = getHint();
        }
        return text;
    }

    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
            int fromIndex, int removedCount, int addedCount) {
        AccessibilityEvent event =
            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
        event.setFromIndex(fromIndex);
        event.setRemovedCount(removedCount);
        event.setAddedCount(addedCount);
        event.setBeforeText(beforeText);
        sendAccessibilityEventUnchecked(event);
    }

    @Override
    protected void onCreateContextMenu(ContextMenu menu) {
        super.onCreateContextMenu(menu);
        boolean added = false;
        mContextMenuTriggeredByKey = mDPadCenterIsDown || mEnterKeyIsDown;
        // Problem with context menu on long press: the menu appears while the key in down and when
        // the key is released, the view does not receive the key_up event.
        // We need two layers of flags: mDPadCenterIsDown and mEnterKeyIsDown are set in key down/up
        // events. We cannot simply clear these flags in onTextContextMenuItem since
        // it may not be called (if the user/ discards the context menu with the back key).
        // We clear these flags here and mContextMenuTriggeredByKey saves that state so that it is
        // available in onTextContextMenuItem.
        mDPadCenterIsDown = mEnterKeyIsDown = false;

        MenuHandler handler = new MenuHandler();

        if (mText instanceof Spanned && hasSelectionController()) {
            long lastTouchOffset = getLastTouchOffsets();
            final int selStart = extractRangeStartFromLong(lastTouchOffset);
            final int selEnd = extractRangeEndFromLong(lastTouchOffset);

            URLSpan[] urls = ((Spanned) mText).getSpans(selStart, selEnd, URLSpan.class);
            if (urls.length > 0) {
                menu.add(0, ID_COPY_URL, 0, com.android.internal.R.string.copyUrl).
                        setOnMenuItemClickListener(handler);

                added = true;
            }
        }
        
        // The context menu is not empty, which will prevent the selection mode from starting.
        // Add a entry to start it in the context menu.
        // TODO Does not handle the case where a subclass does not call super.thisMethod or
        // populates the menu AFTER this call.
        if (menu.size() > 0) {
            menu.add(0, ID_SELECTION_MODE, 0, com.android.internal.R.string.selectTextMode).
                    setOnMenuItemClickListener(handler);
            added = true;
        }

        if (added) {
            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
        }
    }

    /**
     * Returns whether this text view is a current input method target.  The
     * default implementation just checks with {@link InputMethodManager}.
     */
    public boolean isInputMethodTarget() {
        InputMethodManager imm = InputMethodManager.peekInstance();
        return imm != null && imm.isActive(this);
    }
    
    // Selection context mode
    private static final int ID_SELECT_ALL = android.R.id.selectAll;
    private static final int ID_CUT = android.R.id.cut;
    private static final int ID_COPY = android.R.id.copy;
    private static final int ID_PASTE = android.R.id.paste;
    // Context menu entries
    private static final int ID_COPY_URL = android.R.id.copyUrl;
    private static final int ID_SELECTION_MODE = android.R.id.selectTextMode;

    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
        public boolean onMenuItemClick(MenuItem item) {
            return onTextContextMenuItem(item.getItemId());
        }
    }

    /**
     * Called when a context menu option for the text view is selected.  Currently
     * this will be {@link android.R.id#copyUrl}, {@link android.R.id#selectTextMode},
     * {@link android.R.id#selectAll}, {@link android.R.id#paste}, {@link android.R.id#cut}
     * or {@link android.R.id#copy}.
     *
     * @return true if the context menu item action was performed.
     */
    public boolean onTextContextMenuItem(int id) {
        int min = 0;
        int max = mText.length();

        if (isFocused()) {
            final int selStart = getSelectionStart();
            final int selEnd = getSelectionEnd();

            min = Math.max(0, Math.min(selStart, selEnd));
            max = Math.max(0, Math.max(selStart, selEnd));
        }

        switch (id) {
            case ID_COPY_URL:
                URLSpan[] urls = ((Spanned) mText).getSpans(min, max, URLSpan.class);
                if (urls.length >= 1) {
                    ClipData clip = null;
                    for (int i=0; i<urls.length; i++) {
                        Uri uri = Uri.parse(urls[0].getURL());
                        if (clip == null) {
                            clip = ClipData.newRawUri(null, uri);
                        } else {
                            clip.addItem(new ClipData.Item(uri));
                        }
                    }
                    if (clip != null) {
                        setPrimaryClip(clip);
                    }
                }
                stopSelectionActionMode();
                return true;

            case ID_SELECTION_MODE:
                if (mSelectionActionMode != null) {
                    // Selection mode is already started, simply change selected part.
                    selectCurrentWord();
                } else {
                    startSelectionActionMode();
                }
                return true;

            case ID_SELECT_ALL:
                // This does not enter text selection mode. Text is highlighted, so that it can be
                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
                selectAll();
                return true;

            case ID_PASTE:
                paste(min, max);
                return true;

            case ID_CUT:
                setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max)));
                ((Editable) mText).delete(min, max);
                stopSelectionActionMode();
                return true;

            case ID_COPY:
                setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max)));
                stopSelectionActionMode();
                return true;
        }
        return false;
    }

    /**
     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
     * by [min, max] when replacing this region by paste.
     * Note that if there were two spaces (or more) at that position before, they are kept. We just
     * make sure we do not add an extra one from the paste content.
     */
    private long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
        if (paste.length() > 0) {
            if (min > 0) {
                final char charBefore = mTransformed.charAt(min - 1);
                final char charAfter = paste.charAt(0);

                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
                    // Two spaces at beginning of paste: remove one
                    final int originalLength = mText.length();
                    ((Editable) mText).delete(min - 1, min);
                    // Due to filters, there is no guarantee that exactly one character was
                    // removed: count instead.
                    final int delta = mText.length() - originalLength;
                    min += delta;
                    max += delta;
                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
                    // No space at beginning of paste: add one
                    final int originalLength = mText.length();
                    ((Editable) mText).replace(min, min, " ");
                    // Taking possible filters into account as above.
                    final int delta = mText.length() - originalLength;
                    min += delta;
                    max += delta;
                }
            }

            if (max < mText.length()) {
                final char charBefore = paste.charAt(paste.length() - 1);
                final char charAfter = mTransformed.charAt(max);

                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
                    // Two spaces at end of paste: remove one
                    ((Editable) mText).delete(max, max + 1);
                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
                    // No space at end of paste: add one
                    ((Editable) mText).replace(max, max, " ");
                }
            }
        }

        return packRangeInLong(min, max);
    }

    private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) {
        TextView shadowView = (TextView) inflate(mContext,
                com.android.internal.R.layout.text_drag_thumbnail, null);

        if (shadowView == null) {
            throw new IllegalArgumentException("Unable to inflate text drag thumbnail");
        }

        if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) {
            text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH);
        }
        shadowView.setText(text);
        shadowView.setTextColor(getTextColors());

        shadowView.setTextAppearance(mContext, R.styleable.Theme_textAppearanceLarge);
        shadowView.setGravity(Gravity.CENTER);

        shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT));

        final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
        shadowView.measure(size, size);

        shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight());
        shadowView.invalidate();
        return new DragShadowBuilder(shadowView);
    }

    private static class DragLocalState {
        public TextView sourceTextView;
        public int start, end;

        public DragLocalState(TextView sourceTextView, int start, int end) {
            this.sourceTextView = sourceTextView;
            this.start = start;
            this.end = end;
        }
    }

    @Override
    public boolean performLongClick() {
        boolean handled = false;
        boolean vibrate = true;

        if (super.performLongClick()) {
            mDiscardNextActionUp = true;
            handled = true;
        }

        // Long press in empty space moves cursor and shows the Paste affordance if available.
        if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) &&
                mInsertionControllerEnabled) {
            final int offset = getOffsetForPosition(mLastDownPositionX, mLastDownPositionY);
            stopSelectionActionMode();
            Selection.setSelection((Spannable) mText, offset);
            getInsertionController().showWithActionPopup();
            handled = true;
            vibrate = false;
        }

        if (!handled && mSelectionActionMode != null) {
            if (touchPositionIsInSelection()) {
                // Start a drag
                final int start = getSelectionStart();
                final int end = getSelectionEnd();
                CharSequence selectedText = mTransformed.subSequence(start, end);
                ClipData data = ClipData.newPlainText(null, selectedText);
                DragLocalState localState = new DragLocalState(this, start, end);
                startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0);
                stopSelectionActionMode();
            } else {
                getSelectionController().hide();
                selectCurrentWord();
                getSelectionController().show();
            }
            handled = true;
        }

        // Start a new selection
        if (!handled) {
            handled = startSelectionActionMode();
        }

        if (vibrate) {
            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
        }

        if (handled) {
            mDiscardNextActionUp = true;
        }

        return handled;
    }

    private boolean touchPositionIsInSelection() {
        int selectionStart = getSelectionStart();
        int selectionEnd = getSelectionEnd();

        if (selectionStart == selectionEnd) {
            return false;
        }

        if (selectionStart > selectionEnd) {
            int tmp = selectionStart;
            selectionStart = selectionEnd;
            selectionEnd = tmp;
            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
        }

        SelectionModifierCursorController selectionController = getSelectionController();
        int minOffset = selectionController.getMinTouchOffset();
        int maxOffset = selectionController.getMaxTouchOffset();

        return ((minOffset >= selectionStart) && (maxOffset < selectionEnd));
    }

    private PositionListener getPositionListener() {
        if (mPositionListener == null) {
            mPositionListener = new PositionListener();
        }
        return mPositionListener;
    }

    private interface TextViewPositionListener {
        public void updatePosition(int parentPositionX, int parentPositionY,
                boolean parentPositionChanged, boolean parentScrolled);
    }

    private class PositionListener implements ViewTreeObserver.OnPreDrawListener {
        // 3 handles
        // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others)
        private final int MAXIMUM_NUMBER_OF_LISTENERS = 6;
        private TextViewPositionListener[] mPositionListeners =
                new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS];
        private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS];
        private boolean mPositionHasChanged = true;
        // Absolute position of the TextView with respect to its parent window
        private int mPositionX, mPositionY;
        private int mNumberOfListeners;
        private boolean mScrollHasChanged;

        public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) {
            if (mNumberOfListeners == 0) {
                updatePosition();
                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
                vto.addOnPreDrawListener(this);
            }

            int emptySlotIndex = -1;
            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
                TextViewPositionListener listener = mPositionListeners[i];
                if (listener == positionListener) {
                    return;
                } else if (emptySlotIndex < 0 && listener == null) {
                    emptySlotIndex = i;
                }
            }

            mPositionListeners[emptySlotIndex] = positionListener;
            mCanMove[emptySlotIndex] = canMove;
            mNumberOfListeners++;
        }

        public void removeSubscriber(TextViewPositionListener positionListener) {
            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
                if (mPositionListeners[i] == positionListener) {
                    mPositionListeners[i] = null;
                    mNumberOfListeners--;
                    break;
                }
            }

            if (mNumberOfListeners == 0) {
                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
                vto.removeOnPreDrawListener(this);
            }
        }

        public int getPositionX() {
            return mPositionX;
        }

        public int getPositionY() {
            return mPositionY;
        }

        @Override
        public boolean onPreDraw() {
            updatePosition();

            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
                if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) {
                    TextViewPositionListener positionListener = mPositionListeners[i];
                    if (positionListener != null) {
                        positionListener.updatePosition(mPositionX, mPositionY,
                                mPositionHasChanged, mScrollHasChanged);
                    }
                }
            }

            mScrollHasChanged = false;
            return true;
        }

        private void updatePosition() {
            TextView.this.getLocationInWindow(mTempCoords);

            mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY;

            mPositionX = mTempCoords[0];
            mPositionY = mTempCoords[1];
        }

        public boolean isVisible(int positionX, int positionY) {
            final TextView textView = TextView.this;

            if (mTempRect == null) mTempRect = new Rect();
            final Rect clip = mTempRect;
            clip.left = getCompoundPaddingLeft();
            clip.top = getExtendedPaddingTop();
            clip.right = textView.getWidth() - getCompoundPaddingRight();
            clip.bottom = textView.getHeight() - getExtendedPaddingBottom();

            final ViewParent parent = textView.getParent();
            if (parent == null || !parent.getChildVisibleRect(textView, clip, null)) {
                return false;
            }

            int posX = mPositionX + positionX;
            int posY = mPositionY + positionY;

            // Offset by 1 to take into account 0.5 and int rounding around getPrimaryHorizontal.
            return posX >= clip.left - 1 && posX <= clip.right + 1 &&
                    posY >= clip.top && posY <= clip.bottom;
        }

        public boolean isOffsetVisible(int offset) {
            final int line = mLayout.getLineForOffset(offset);
            final int lineBottom = mLayout.getLineBottom(line);
            final int primaryHorizontal = (int) mLayout.getPrimaryHorizontal(offset);
            return isVisible(primaryHorizontal, lineBottom);
        }

        public void onScrollChanged() {
            mScrollHasChanged = true;
        }
    }

    @Override
    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
        if (mPositionListener != null) {
            mPositionListener.onScrollChanged();
        }
    }

    private abstract class PinnedPopupWindow implements TextViewPositionListener {
        protected PopupWindow mPopupWindow;
        protected ViewGroup mContentView;
        int mPositionX, mPositionY;

        protected abstract void createPopupWindow();
        protected abstract void initContentView();
        protected abstract int getTextOffset();
        protected abstract int getVerticalLocalPosition(int line);
        protected abstract int clipVertically(int positionY);

        public PinnedPopupWindow() {
            createPopupWindow();

            mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
            mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
            mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);

            initContentView();

            LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
            mContentView.setLayoutParams(wrapContent);

            mPopupWindow.setContentView(mContentView);
        }

        public void show() {
            TextView.this.getPositionListener().addSubscriber(this, false /* offset is fixed */);

            computeLocalPosition();

            final PositionListener positionListener = TextView.this.getPositionListener();
            updatePosition(positionListener.getPositionX(), positionListener.getPositionY());
        }
        
        protected void measureContent() {
            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
            mContentView.measure(
                    View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels,
                            View.MeasureSpec.AT_MOST),
                    View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels,
                            View.MeasureSpec.AT_MOST));
        }

        /* The popup window will be horizontally centered on the getTextOffset() and vertically
         * positioned according to viewportToContentHorizontalOffset.
         * 
         * This method assumes that mContentView has properly been measured from its content. */
        private void computeLocalPosition() {
            measureContent();
            final int width = mContentView.getMeasuredWidth();
            final int offset = getTextOffset();
            mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - width / 2.0f);
            mPositionX += viewportToContentHorizontalOffset();

            final int line = mLayout.getLineForOffset(offset);
            mPositionY = getVerticalLocalPosition(line);
            mPositionY += viewportToContentVerticalOffset();
        }

        private void updatePosition(int parentPositionX, int parentPositionY) {
            int positionX = parentPositionX + mPositionX;
            int positionY = parentPositionY + mPositionY;

            positionY = clipVertically(positionY);

            // Horizontal clipping
            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
            final int width = mContentView.getMeasuredWidth();
            positionX = Math.min(displayMetrics.widthPixels - width, positionX);
            positionX = Math.max(0, positionX);

            if (isShowing()) {
                mPopupWindow.update(positionX, positionY, -1, -1);
            } else {
                mPopupWindow.showAtLocation(TextView.this, Gravity.NO_GRAVITY,
                        positionX, positionY);
            }
        }

        public void hide() {
            mPopupWindow.dismiss();
            TextView.this.getPositionListener().removeSubscriber(this);
        }

        @Override
        public void updatePosition(int parentPositionX, int parentPositionY,
                boolean parentPositionChanged, boolean parentScrolled) {
            // Either parentPositionChanged or parentScrolled is true, check if still visible
            if (isShowing() && getPositionListener().isOffsetVisible(getTextOffset())) {
                if (parentScrolled) computeLocalPosition();
                updatePosition(parentPositionX, parentPositionY);
            } else {
                hide();
            }
        }

        public boolean isShowing() {
            return mPopupWindow.isShowing();
        }
    }

    private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener {
        private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE;
        private SuggestionInfo[] mSuggestionInfos;
        private int mNumberOfSuggestions;
        private boolean mCursorWasVisibleBeforeSuggestions;
        private SuggestionAdapter mSuggestionsAdapter;
        private final Comparator<SuggestionSpan> mSuggestionSpanComparator;
        private final HashMap<SuggestionSpan, Integer> mSpansLengths;


        private class CustomPopupWindow extends PopupWindow {
            public CustomPopupWindow(Context context, int defStyle) {
                super(context, null, defStyle);
            }

            @Override
            public void dismiss() {
                super.dismiss();

                TextView.this.getPositionListener().removeSubscriber(SuggestionsPopupWindow.this);

                if ((mText instanceof Spannable)) {
                    ((Spannable) mText).removeSpan(mSuggestionRangeSpan);
                }

                setCursorVisible(mCursorWasVisibleBeforeSuggestions);
                if (hasInsertionController()) {
                    getInsertionController().show(); 
                }
            }
        }

        public SuggestionsPopupWindow() {
            mCursorWasVisibleBeforeSuggestions = mCursorVisible;
            mSuggestionSpanComparator = new SuggestionSpanComparator();
            mSpansLengths = new HashMap<SuggestionSpan, Integer>();
        }

        @Override
        protected void createPopupWindow() {
            mPopupWindow = new CustomPopupWindow(TextView.this.mContext,
                com.android.internal.R.attr.textSuggestionsWindowStyle);
            mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
            mPopupWindow.setFocusable(true);
            mPopupWindow.setClippingEnabled(false);
        }

        @Override
        protected void initContentView() {
            ListView listView = new ListView(TextView.this.getContext());
            mSuggestionsAdapter = new SuggestionAdapter();
            listView.setAdapter(mSuggestionsAdapter);
            listView.setOnItemClickListener(this);
            mContentView = listView;

            // Inflate the suggestion items once and for all. +1 for add to dictionary
            mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 1];
            for (int i = 0; i < MAX_NUMBER_SUGGESTIONS + 1; i++) {
                mSuggestionInfos[i] = new SuggestionInfo();
            }
        }

        private class SuggestionInfo {
            int suggestionStart, suggestionEnd; // range of actual suggestion within text
            SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents
            int suggestionIndex; // the index of this suggestion inside suggestionSpan
            SpannableStringBuilder text = new SpannableStringBuilder();
            TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mContext,
                    android.R.style.TextAppearance_SuggestionHighlight);

            void removeMisspelledFlag() {
                int suggestionSpanFlags = suggestionSpan.getFlags();
                if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) {
                    suggestionSpanFlags &= ~(SuggestionSpan.FLAG_MISSPELLED);
                    suggestionSpanFlags &= ~(SuggestionSpan.FLAG_EASY_CORRECT);
                    suggestionSpan.setFlags(suggestionSpanFlags);
                }
            }
        }

        private class SuggestionAdapter extends BaseAdapter {
            private LayoutInflater mInflater = (LayoutInflater) TextView.this.mContext.
                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            @Override
            public int getCount() {
                return mNumberOfSuggestions;
            }

            @Override
            public Object getItem(int position) {
                return mSuggestionInfos[position];
            }

            @Override
            public long getItemId(int position) {
                return position;
            }

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                TextView textView = (TextView) convertView;

                if (textView == null) {
                    textView = (TextView) mInflater.inflate(mTextEditSuggestionItemLayout, parent,
                            false);
                }

                textView.setText(mSuggestionInfos[position].text);
                return textView;
            }
        }

        private class SuggestionSpanComparator implements Comparator<SuggestionSpan> {
            public int compare(SuggestionSpan span1, SuggestionSpan span2) {
                final int flag1 = span1.getFlags();
                final int flag2 = span2.getFlags();
                if (flag1 != flag2) {
                    // The order here should match what is used in updateDrawState
                    final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0;
                    final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0;
                    final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0;
                    final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0;
                    if (easy1 && !misspelled1) return -1;
                    if (easy2 && !misspelled2) return 1;
                    if (misspelled1) return -1;
                    if (misspelled2) return 1;
                }

                return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue();
            }
        }

        /**
         * Returns the suggestion spans that cover the current cursor position. The suggestion
         * spans are sorted according to the length of text that they are attached to.
         */
        private SuggestionSpan[] getSuggestionSpans() {
            int pos = TextView.this.getSelectionStart();
            Spannable spannable = (Spannable) TextView.this.mText;
            SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class);

            mSpansLengths.clear();
            for (SuggestionSpan suggestionSpan : suggestionSpans) {
                int start = spannable.getSpanStart(suggestionSpan);
                int end = spannable.getSpanEnd(suggestionSpan);
                mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start));
            }

            // The suggestions are sorted according to their types (easy correction first, then
            // misspelled) and to the length of the text that they cover (shorter first).
            Arrays.sort(suggestionSpans, mSuggestionSpanComparator);
            return suggestionSpans;
        }

        @Override
        public void show() {
            if (!(mText instanceof Editable)) return;

            if (updateSuggestions()) {
                mCursorWasVisibleBeforeSuggestions = mCursorVisible;
                setCursorVisible(false);
                super.show();
            }
        }

        @Override
        protected void measureContent() {
            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
            final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec(
                    displayMetrics.widthPixels, View.MeasureSpec.AT_MOST);
            final int verticalMeasure = View.MeasureSpec.makeMeasureSpec(
                    displayMetrics.heightPixels, View.MeasureSpec.AT_MOST);
            
            int width = 0;
            View view = null;
            for (int i = 0; i < mNumberOfSuggestions; i++) {
                view = mSuggestionsAdapter.getView(i, view, mContentView);
                view.measure(horizontalMeasure, verticalMeasure);
                width = Math.max(width, view.getMeasuredWidth());
            }

            // Enforce the width based on actual text widths
            mContentView.measure(
                    View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY),
                    verticalMeasure);

            Drawable popupBackground = mPopupWindow.getBackground();
            if (popupBackground != null) {
                if (mTempRect == null) mTempRect = new Rect();
                popupBackground.getPadding(mTempRect);
                width += mTempRect.left + mTempRect.right;
            }
            mPopupWindow.setWidth(width);
        }

        @Override
        protected int getTextOffset() {
            return getSelectionStart();
        }

        @Override
        protected int getVerticalLocalPosition(int line) {
            return mLayout.getLineBottom(line);
        }

        @Override
        protected int clipVertically(int positionY) {
            final int height = mContentView.getMeasuredHeight();
            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
            return Math.min(positionY, displayMetrics.heightPixels - height);
        }

        @Override
        public void hide() {
            super.hide();
        }

        private boolean updateSuggestions() {
            Spannable spannable = (Spannable) TextView.this.mText;
            SuggestionSpan[] suggestionSpans = getSuggestionSpans();

            final int nbSpans = suggestionSpans.length;

            mNumberOfSuggestions = 0;
            int spanUnionStart = mText.length();
            int spanUnionEnd = 0;

            SuggestionSpan misspelledSpan = null;
            int underlineColor = 0;

            for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) {
                SuggestionSpan suggestionSpan = suggestionSpans[spanIndex];
                final int spanStart = spannable.getSpanStart(suggestionSpan);
                final int spanEnd = spannable.getSpanEnd(suggestionSpan);
                spanUnionStart = Math.min(spanStart, spanUnionStart);
                spanUnionEnd = Math.max(spanEnd, spanUnionEnd);

                if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) {
                    misspelledSpan = suggestionSpan;
                }

                // The first span dictates the background color of the highlighted text
                if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor();

                String[] suggestions = suggestionSpan.getSuggestions();
                int nbSuggestions = suggestions.length;
                for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) {
                    SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
                    suggestionInfo.suggestionSpan = suggestionSpan;
                    suggestionInfo.suggestionIndex = suggestionIndex;
                    suggestionInfo.text.replace(0, suggestionInfo.text.length(),
                            suggestions[suggestionIndex]);

                    mNumberOfSuggestions++;
                    if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) {
                        // Also end outer for loop
                        spanIndex = nbSpans;
                        break;
                    }
                }
            }

            for (int i = 0; i < mNumberOfSuggestions; i++) {
                highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd);
            }

            if (misspelledSpan != null) {
                final int misspelledStart = spannable.getSpanStart(misspelledSpan);
                final int misspelledEnd = spannable.getSpanEnd(misspelledSpan);
                if (misspelledStart >= 0 && misspelledEnd > misspelledStart) {
                    SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
                    suggestionInfo.suggestionSpan = misspelledSpan;
                    suggestionInfo.suggestionIndex = -1;
                    suggestionInfo.text.replace(0, suggestionInfo.text.length(),
                            getContext().getString(com.android.internal.R.string.addToDictionary));

                    mNumberOfSuggestions++;
                }
            }

            if (mNumberOfSuggestions == 0) return false;

            if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan();
            if (underlineColor == 0) {
                // Fallback on the default highlight color when the first span does not provide one
                mSuggestionRangeSpan.setBackgroundColor(mHighlightColor);
            } else {
                final float BACKGROUND_TRANSPARENCY = 0.3f;
                final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY);
                mSuggestionRangeSpan.setBackgroundColor(
                        (underlineColor & 0x00FFFFFF) + (newAlpha << 24));
            }
            spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd,
                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

            mSuggestionsAdapter.notifyDataSetChanged();

            return true;
        }

        private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart,
                int unionEnd) {
            final Spannable text = (Spannable) mText;
            final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan);
            final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan);

            // Adjust the start/end of the suggestion span
            suggestionInfo.suggestionStart = spanStart - unionStart;
            suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 
                    + suggestionInfo.text.length();
            
            suggestionInfo.text.clearSpans();
            suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0,
                    suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

            // Add the text before and after the span.
            suggestionInfo.text.insert(0, mText.subSequence(unionStart, spanStart).toString());
            suggestionInfo.text.append(mText.subSequence(spanEnd, unionEnd).toString());
        }

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            if (view instanceof TextView) {
                TextView textView = (TextView) view;
                Editable editable = (Editable) mText;

                SuggestionInfo suggestionInfo = mSuggestionInfos[position];
                final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan);
                final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan);
                final String originalText = mText.subSequence(spanStart, spanEnd).toString();

                if (suggestionInfo.suggestionIndex < 0) {
                    Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT);
                    intent.putExtra("word", originalText);
                    intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
                    getContext().startActivity(intent);
                    suggestionInfo.removeMisspelledFlag();
                } else {
                    // SuggestionSpans are removed by replace: save them before
                    SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd,
                            SuggestionSpan.class);
                    final int length = suggestionSpans.length;
                    int[] suggestionSpansStarts = new int[length];
                    int[] suggestionSpansEnds = new int[length];
                    int[] suggestionSpansFlags = new int[length];
                    for (int i = 0; i < length; i++) {
                        final SuggestionSpan suggestionSpan = suggestionSpans[i];
                        suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan);
                        suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan);
                        suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan);
                    }

                    final int suggestionStart = suggestionInfo.suggestionStart;
                    final int suggestionEnd = suggestionInfo.suggestionEnd;
                    final String suggestion = textView.getText().subSequence(
                            suggestionStart, suggestionEnd).toString();
                    editable.replace(spanStart, spanEnd, suggestion);

                    suggestionInfo.removeMisspelledFlag();

                    // Notify source IME of the suggestion pick. Do this before swaping texts.
                    if (!TextUtils.isEmpty(
                            suggestionInfo.suggestionSpan.getNotificationTargetClassName())) {
                        InputMethodManager imm = InputMethodManager.peekInstance();
                        imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText,
                                suggestionInfo.suggestionIndex);
                    }

                    // Swap text content between actual text and Suggestion span
                    String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions();
                    suggestions[suggestionInfo.suggestionIndex] = originalText;

                    // Restore previous SuggestionSpans
                    final int lengthDifference = suggestion.length() - (spanEnd - spanStart);
                    for (int i = 0; i < length; i++) {
                        // Only spans that include the modified region make sense after replacement
                        // Spans partially included in the replaced region are removed, there is no
                        // way to assign them a valid range after replacement
                        if (suggestionSpansStarts[i] <= spanStart &&
                                suggestionSpansEnds[i] >= spanEnd) {
                            editable.setSpan(suggestionSpans[i], suggestionSpansStarts[i],
                                    suggestionSpansEnds[i] + lengthDifference,
                                    suggestionSpansFlags[i]);
                        }
                    }
                    
                    // Move cursor at the end of the replacement word
                    Selection.setSelection(editable, spanEnd + lengthDifference);
                }
            }
            hide();
        }
    }

    /**
     * Removes the suggestion spans.
     */
    CharSequence removeSuggestionSpans(CharSequence text) {
       if (text instanceof Spanned) {
           Spannable spannable;
           if (text instanceof Spannable) {
               spannable = (Spannable) text;
           } else {
               spannable = new SpannableString(text);
               text = spannable;
           }

           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
           for (int i = 0; i < spans.length; i++) {
               spannable.removeSpan(spans[i]);
           }
       }
       return text;
    }

    void showSuggestions() {
        if (mSuggestionsPopupWindow == null) {
            mSuggestionsPopupWindow = new SuggestionsPopupWindow();
        }
        hideControllers();
        mSuggestionsPopupWindow.show();
    }

    boolean areSuggestionsShown() {
        return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing();
    }

    /**
     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
     * by the IME or by the spell checker as the user types. This is done by adding
     * {@link SuggestionSpan}s to the text.
     *
     * When suggestions are enabled (default), this list of suggestions will be displayed when the
     * user asks for them on these parts of the text. This value depends on the inputType of this
     * TextView.
     *
     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
     *
     * In addition, the type variation must be one of
     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
     *
     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
     *
     * @return true if the suggestions popup window is enabled, based on the inputType.
     */
    public boolean isSuggestionsEnabled() {
        if ((mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) return false;
        if ((mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;

        final int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
    }

    /**
     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
     * selection is initiated in this View.
     *
     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
     * Paste actions, depending on what this View supports.
     *
     * A custom implementation can add new entries in the default menu in its
     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
     * or {@link android.R.id#paste} ids as parameters.
     *
     * Returning false from 
     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
     * the action mode from being started.
     *
     * Action click events should be handled by the custom implementation of
     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
     *
     * Note that text selection mode is not started when a TextView receives focus and the
     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
     * that case, to allow for quick replacement.
     */
    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
        mCustomSelectionActionModeCallback = actionModeCallback;
    }

    /**
     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
     *
     * @return The current custom selection callback.
     */
    public ActionMode.Callback getCustomSelectionActionModeCallback() {
        return mCustomSelectionActionModeCallback;
    }

    /**
     *
     * @return true if the selection mode was actually started.
     */
    private boolean startSelectionActionMode() {
        if (mSelectionActionMode != null) {
            // Selection action mode is already started
            return false;
        }

        if (!canSelectText() || !requestFocus()) {
            Log.w(LOG_TAG, "TextView does not support text selection. Action mode cancelled.");
            return false;
        }

        if (!hasSelection()) {
            // There may already be a selection on device rotation
            boolean currentWordSelected = selectCurrentWord();
            if (!currentWordSelected) {
                // No word found under cursor or text selection not permitted.
                return false;
            }
        }

        final InputMethodManager imm = InputMethodManager.peekInstance();
        boolean extractedTextModeWillBeStartedFullScreen = !(this instanceof ExtractEditText) &&
                imm != null && imm.isFullscreenMode();

        // Do not start the action mode when extracted text will show up full screen, thus
        // immediately hiding the newly created action bar, which would be visually distracting.
        if (!extractedTextModeWillBeStartedFullScreen) {
            ActionMode.Callback actionModeCallback = new SelectionActionModeCallback();
            mSelectionActionMode = startActionMode(actionModeCallback);
        }
        final boolean selectionStarted = mSelectionActionMode != null ||
                extractedTextModeWillBeStartedFullScreen;

        if (selectionStarted && !mTextIsSelectable && imm != null) {
            // Show the IME to be able to replace text, except when selecting non editable text.
            imm.showSoftInput(this, 0, null);
        }

        return selectionStarted;
    }

    private void stopSelectionActionMode() {
        if (mSelectionActionMode != null) {
            // This will hide the mSelectionModifierCursorController
            mSelectionActionMode.finish();
        }
    }

    /**
     * Paste clipboard content between min and max positions.
     */
    private void paste(int min, int max) {
        ClipboardManager clipboard =
            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
        ClipData clip = clipboard.getPrimaryClip();
        if (clip != null) {
            boolean didFirst = false;
            for (int i=0; i<clip.getItemCount(); i++) {
                CharSequence paste = clip.getItemAt(i).coerceToText(getContext());
                if (paste != null) {
                    if (!didFirst) {
                        long minMax = prepareSpacesAroundPaste(min, max, paste);
                        min = extractRangeStartFromLong(minMax);
                        max = extractRangeEndFromLong(minMax);
                        Selection.setSelection((Spannable) mText, max);
                        ((Editable) mText).replace(min, max, paste);
                        didFirst = true;
                    } else {
                        ((Editable) mText).insert(getSelectionEnd(), "\n");
                        ((Editable) mText).insert(getSelectionEnd(), paste);
                    }
                }
            }
            stopSelectionActionMode();
            sLastCutOrCopyTime = 0;
        }
    }

    private void setPrimaryClip(ClipData clip) {
        ClipboardManager clipboard = (ClipboardManager) getContext().
                getSystemService(Context.CLIPBOARD_SERVICE);
        clipboard.setPrimaryClip(clip);
        sLastCutOrCopyTime = SystemClock.uptimeMillis();
    }

    /**
     * An ActionMode Callback class that is used to provide actions while in text selection mode.
     *
     * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending
     * on which of these this TextView supports.
     */
    private class SelectionActionModeCallback implements ActionMode.Callback {

        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            TypedArray styledAttributes = mContext.obtainStyledAttributes(R.styleable.Theme);

            boolean allowText = getContext().getResources().getBoolean(
                    com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon);

            mode.setTitle(allowText ?
                    mContext.getString(com.android.internal.R.string.textSelectionCABTitle) : null);
            mode.setSubtitle(null);

            int selectAllIconId = 0; // No icon by default
            if (!allowText) {
                // Provide an icon, text will not be displayed on smaller screens.
                selectAllIconId = styledAttributes.getResourceId(
                        R.styleable.Theme_actionModeSelectAllDrawable, 0);
            }

            menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll).
                    setIcon(selectAllIconId).
                    setAlphabeticShortcut('a').
                    setShowAsAction(
                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);

            if (canCut()) {
                menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut).
                    setIcon(styledAttributes.getResourceId(
                            R.styleable.Theme_actionModeCutDrawable, 0)).
                    setAlphabeticShortcut('x').
                    setShowAsAction(
                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
            }

            if (canCopy()) {
                menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy).
                    setIcon(styledAttributes.getResourceId(
                            R.styleable.Theme_actionModeCopyDrawable, 0)).
                    setAlphabeticShortcut('c').
                    setShowAsAction(
                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
            }

            if (canPaste()) {
                menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
                        setIcon(styledAttributes.getResourceId(
                                R.styleable.Theme_actionModePasteDrawable, 0)).
                        setAlphabeticShortcut('v').
                        setShowAsAction(
                                MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
            }

            styledAttributes.recycle();

            if (mCustomSelectionActionModeCallback != null) {
                if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) {
                    // The custom mode can choose to cancel the action mode
                    return false;
                }
            }

            if (menu.hasVisibleItems() || mode.getCustomView() != null) {
                getSelectionController().show();
                return true;
            } else {
                return false;
            }
        }

        @Override
        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
            if (mCustomSelectionActionModeCallback != null) {
                return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu);
            }
            return true;
        }

        @Override
        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
            if (mCustomSelectionActionModeCallback != null &&
                 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) {
                return true;
            }
            return onTextContextMenuItem(item.getItemId());
        }

        @Override
        public void onDestroyActionMode(ActionMode mode) {
            if (mCustomSelectionActionModeCallback != null) {
                mCustomSelectionActionModeCallback.onDestroyActionMode(mode);
            }
            Selection.setSelection((Spannable) mText, getSelectionEnd());

            if (mSelectionModifierCursorController != null) {
                mSelectionModifierCursorController.hide();
            }

            mSelectionActionMode = null;
        }
    }

    private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener {
        private static final int POPUP_TEXT_LAYOUT =
                com.android.internal.R.layout.text_edit_action_popup_text;
        private TextView mPasteTextView;
        private TextView mReplaceTextView;

        @Override
        protected void createPopupWindow() {
            mPopupWindow = new PopupWindow(TextView.this.mContext, null,
                    com.android.internal.R.attr.textSelectHandleWindowStyle);
            mPopupWindow.setClippingEnabled(true);
        }

        @Override
        protected void initContentView() {
            LinearLayout linearLayout = new LinearLayout(TextView.this.getContext());
            linearLayout.setOrientation(LinearLayout.HORIZONTAL);
            mContentView = linearLayout;
            mContentView.setBackgroundResource(
                    com.android.internal.R.drawable.text_edit_paste_window);

            LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            LayoutParams wrapContent = new LayoutParams(
                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

            mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
            mPasteTextView.setLayoutParams(wrapContent);
            mContentView.addView(mPasteTextView);
            mPasteTextView.setText(com.android.internal.R.string.paste);
            mPasteTextView.setOnClickListener(this);

            mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
            mReplaceTextView.setLayoutParams(wrapContent);
            mContentView.addView(mReplaceTextView);
            mReplaceTextView.setText(com.android.internal.R.string.replace);
            mReplaceTextView.setOnClickListener(this);
        }

        @Override
        public void show() {
            boolean canPaste = canPaste();
            boolean canSuggest = isSuggestionsEnabled() && isCursorInsideSuggestionSpan();
            mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE);
            mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE);

            if (!canPaste && !canSuggest) return;

            super.show();
        }

        @Override
        public void onClick(View view) {
            if (view == mPasteTextView && canPaste()) {
                onTextContextMenuItem(ID_PASTE);
                hide();
            } else if (view == mReplaceTextView) {
                final int middle = (getSelectionStart() + getSelectionEnd()) / 2;
                stopSelectionActionMode();
                Selection.setSelection((Spannable) mText, middle);
                showSuggestions();
            }
        }

        @Override
        protected int getTextOffset() {
            return (getSelectionStart() + getSelectionEnd()) / 2;
        }

        @Override
        protected int getVerticalLocalPosition(int line) {
            return mLayout.getLineTop(line) - mContentView.getMeasuredHeight();
        }

        @Override
        protected int clipVertically(int positionY) {
            if (positionY < 0) {
                final int offset = getTextOffset();
                final int line = mLayout.getLineForOffset(offset);
                positionY += mLayout.getLineBottom(line) - mLayout.getLineTop(line);
                positionY += mContentView.getMeasuredHeight();

                // Assumes insertion and selection handles share the same height
                final Drawable handle = mContext.getResources().getDrawable(mTextSelectHandleRes);
                positionY += handle.getIntrinsicHeight();
            }

            return positionY;
        }
    }

    private abstract class HandleView extends View implements TextViewPositionListener {
        protected Drawable mDrawable;
        protected Drawable mDrawableLtr;
        protected Drawable mDrawableRtl;
        private final PopupWindow mContainer;
        // Position with respect to the parent TextView
        private int mPositionX, mPositionY;
        private boolean mIsDragging;
        // Offset from touch position to mPosition
        private float mTouchToWindowOffsetX, mTouchToWindowOffsetY;
        protected int mHotspotX;
        // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up
        private float mTouchOffsetY;
        // Where the touch position should be on the handle to ensure a maximum cursor visibility
        private float mIdealVerticalOffset;
        // Parent's (TextView) previous position in window
        private int mLastParentX, mLastParentY;
        // Transient action popup window for Paste and Replace actions
        protected ActionPopupWindow mActionPopupWindow;
        // Previous text character offset
        private int mPreviousOffset = -1;
        // Previous text character offset
        private boolean mPositionHasChanged = true;
        // Used to delay the appearance of the action popup window
        private Runnable mActionPopupShower;

        public HandleView(Drawable drawableLtr, Drawable drawableRtl) {
            super(TextView.this.mContext);
            mContainer = new PopupWindow(TextView.this.mContext, null,
                    com.android.internal.R.attr.textSelectHandleWindowStyle);
            mContainer.setSplitTouchEnabled(true);
            mContainer.setClippingEnabled(false);
            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
            mContainer.setContentView(this);

            mDrawableLtr = drawableLtr;
            mDrawableRtl = drawableRtl;

            updateDrawable();

            final int handleHeight = mDrawable.getIntrinsicHeight();
            mTouchOffsetY = -0.3f * handleHeight;
            mIdealVerticalOffset = 0.7f * handleHeight;
        }

        protected void updateDrawable() {
            final int offset = getCurrentCursorOffset();
            final boolean isRtlCharAtOffset = mLayout.isRtlCharAt(offset);
            mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr;
            mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset);
        }

        protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun);

        // Touch-up filter: number of previous positions remembered
        private static final int HISTORY_SIZE = 5;
        private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150;
        private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350;
        private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE];
        private final int[] mPreviousOffsets = new int[HISTORY_SIZE];
        private int mPreviousOffsetIndex = 0;
        private int mNumberPreviousOffsets = 0;

        private void startTouchUpFilter(int offset) {
            mNumberPreviousOffsets = 0;
            addPositionToTouchUpFilter(offset);
        }

        private void addPositionToTouchUpFilter(int offset) {
            mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE;
            mPreviousOffsets[mPreviousOffsetIndex] = offset;
            mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis();
            mNumberPreviousOffsets++;
        }

        private void filterOnTouchUp() {
            final long now = SystemClock.uptimeMillis();
            int i = 0;
            int index = mPreviousOffsetIndex;
            final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE);
            while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) {
                i++;
                index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE;
            }

            if (i > 0 && i < iMax &&
                    (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) {
                positionAtCursorOffset(mPreviousOffsets[index], false);
            }
        }

        public boolean offsetHasBeenChanged() {
            return mNumberPreviousOffsets > 1;
        }

        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
        }

        public void show() {
            if (isShowing()) return;

            getPositionListener().addSubscriber(this, true /* local position may change */);

            // Make sure the offset is always considered new, even when focusing at same position
            mPreviousOffset = -1;
            positionAtCursorOffset(getCurrentCursorOffset(), false);

            hideActionPopupWindow();
        }

        protected void dismiss() {
            mIsDragging = false;
            mContainer.dismiss();
            onDetached();
        }

        public void hide() {
            dismiss();

            TextView.this.getPositionListener().removeSubscriber(this);
        }

        void showActionPopupWindow(int delay) {
            if (mActionPopupWindow == null) {
                mActionPopupWindow = new ActionPopupWindow();
            }
            if (mActionPopupShower == null) {
                mActionPopupShower = new Runnable() {
                    public void run() {
                        mActionPopupWindow.show();
                    }
                };
            } else {
                TextView.this.removeCallbacks(mActionPopupShower);
            }
            TextView.this.postDelayed(mActionPopupShower, delay);
        }

        protected void hideActionPopupWindow() {
            if (mActionPopupShower != null) {
                TextView.this.removeCallbacks(mActionPopupShower);
            }
            if (mActionPopupWindow != null) {
                mActionPopupWindow.hide();
            }
        }

        public boolean isShowing() {
            return mContainer.isShowing();
        }

        private boolean isVisible() {
            // Always show a dragging handle.
            if (mIsDragging) {
                return true;
            }

            if (isInBatchEditMode()) {
                return false;
            }

            return getPositionListener().isVisible(mPositionX + mHotspotX, mPositionY);
        }

        public abstract int getCurrentCursorOffset();

        protected void updateSelection(int offset) {
            updateDrawable();
        }

        public abstract void updatePosition(float x, float y);

        protected void positionAtCursorOffset(int offset, boolean parentScrolled) {
            // A HandleView relies on the layout, which may be nulled by external methods
            if (mLayout == null) {
                // Will update controllers' state, hiding them and stopping selection mode if needed
                prepareCursorControllers();
                return;
            }

            if (offset != mPreviousOffset || parentScrolled) {
                updateSelection(offset);
                addPositionToTouchUpFilter(offset);
                final int line = mLayout.getLineForOffset(offset);

                mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX);
                mPositionY = mLayout.getLineBottom(line);

                // Take TextView's padding into account.
                mPositionX += viewportToContentHorizontalOffset();
                mPositionY += viewportToContentVerticalOffset();

                mPreviousOffset = offset;
                mPositionHasChanged = true;
            }
        }

        public void updatePosition(int parentPositionX, int parentPositionY,
                boolean parentPositionChanged, boolean parentScrolled) {
            positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled);
            if (parentPositionChanged || mPositionHasChanged) {
                if (mIsDragging) {
                    // Update touchToWindow offset in case of parent scrolling while dragging
                    if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) {
                        mTouchToWindowOffsetX += parentPositionX - mLastParentX;
                        mTouchToWindowOffsetY += parentPositionY - mLastParentY;
                        mLastParentX = parentPositionX;
                        mLastParentY = parentPositionY;
                    }

                    onHandleMoved();
                }

                if (isVisible()) {
                    final int positionX = parentPositionX + mPositionX;
                    final int positionY = parentPositionY + mPositionY;
                    if (isShowing()) {
                        mContainer.update(positionX, positionY, -1, -1);
                    } else {
                        mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY,
                                positionX, positionY);
                    }
                } else {
                    if (isShowing()) {
                        dismiss();
                    }
                }

                mPositionHasChanged = false;
            }
        }

        @Override
        protected void onDraw(Canvas c) {
            mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop);
            mDrawable.draw(c);
        }

        @Override
        public boolean onTouchEvent(MotionEvent ev) {
            switch (ev.getActionMasked()) {
                case MotionEvent.ACTION_DOWN: {
                    startTouchUpFilter(getCurrentCursorOffset());
                    mTouchToWindowOffsetX = ev.getRawX() - mPositionX;
                    mTouchToWindowOffsetY = ev.getRawY() - mPositionY;

                    final PositionListener positionListener = getPositionListener();
                    mLastParentX = positionListener.getPositionX();
                    mLastParentY = positionListener.getPositionY();
                    mIsDragging = true;
                    break;
                }

                case MotionEvent.ACTION_MOVE: {
                    final float rawX = ev.getRawX();
                    final float rawY = ev.getRawY();

                    // Vertical hysteresis: vertical down movement tends to snap to ideal offset
                    final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY;
                    final float currentVerticalOffset = rawY - mPositionY - mLastParentY;
                    float newVerticalOffset;
                    if (previousVerticalOffset < mIdealVerticalOffset) {
                        newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset);
                        newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset);
                    } else {
                        newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset);
                        newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset);
                    }
                    mTouchToWindowOffsetY = newVerticalOffset + mLastParentY;

                    final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX;
                    final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY;

                    updatePosition(newPosX, newPosY);
                    break;
                }

                case MotionEvent.ACTION_UP:
                    filterOnTouchUp();
                    mIsDragging = false;
                    break;

                case MotionEvent.ACTION_CANCEL:
                    mIsDragging = false;
                    break;
            }
            return true;
        }

        public boolean isDragging() {
            return mIsDragging;
        }

        void onHandleMoved() {
            hideActionPopupWindow();
        }

        public void onDetached() {
            hideActionPopupWindow();
        }
    }

    private class InsertionHandleView extends HandleView {
        private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000;
        private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds

        // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow
        private float mDownPositionX, mDownPositionY;
        private Runnable mHider;

        public InsertionHandleView(Drawable drawable) {
            super(drawable, drawable);
        }

        @Override
        public void show() {
            super.show();

            final long durationSinceCutOrCopy = SystemClock.uptimeMillis() - sLastCutOrCopyTime;
            if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) {
                showActionPopupWindow(0);
            }

            hideAfterDelay();
        }

        public void showWithActionPopup() {
            show();
            showActionPopupWindow(0);
        }

        private void hideAfterDelay() {
            removeHiderCallback();
            if (mHider == null) {
                mHider = new Runnable() {
                    public void run() {
                        hide();
                    }
                };
            }
            TextView.this.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT);
        }

        private void removeHiderCallback() {
            if (mHider != null) {
                TextView.this.removeCallbacks(mHider);
            }
        }

        @Override
        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
            return drawable.getIntrinsicWidth() / 2;
        }

        @Override
        public boolean onTouchEvent(MotionEvent ev) {
            final boolean result = super.onTouchEvent(ev);

            switch (ev.getActionMasked()) {
                case MotionEvent.ACTION_DOWN:
                    mDownPositionX = ev.getRawX();
                    mDownPositionY = ev.getRawY();
                    break;

                case MotionEvent.ACTION_UP:
                    if (!offsetHasBeenChanged()) {
                        final float deltaX = mDownPositionX - ev.getRawX();
                        final float deltaY = mDownPositionY - ev.getRawY();
                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
                        if (distanceSquared < mSquaredTouchSlopDistance) {
                            if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) {
                                // Tapping on the handle dismisses the displayed action popup
                                mActionPopupWindow.hide();
                            } else {
                                showWithActionPopup();
                            }
                        }
                    }
                    hideAfterDelay();
                    break;

                case MotionEvent.ACTION_CANCEL:
                    hideAfterDelay();
                    break;

                default:
                    break;
            }

            return result;
        }

        @Override
        public int getCurrentCursorOffset() {
            return TextView.this.getSelectionStart();
        }

        @Override
        public void updateSelection(int offset) {
            Selection.setSelection((Spannable) mText, offset);
        }

        @Override
        public void updatePosition(float x, float y) {
            positionAtCursorOffset(getOffsetForPosition(x, y), false);
        }

        @Override
        void onHandleMoved() {
            super.onHandleMoved();
            removeHiderCallback();
        }

        @Override
        public void onDetached() {
            super.onDetached();
            removeHiderCallback();
        }
    }

    private class SelectionStartHandleView extends HandleView {

        public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) {
            super(drawableLtr, drawableRtl);
        }

        @Override
        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
            if (isRtlRun) {
                return drawable.getIntrinsicWidth() / 4;
            } else {
                return (drawable.getIntrinsicWidth() * 3) / 4;
            }
        }

        @Override
        public int getCurrentCursorOffset() {
            return TextView.this.getSelectionStart();
        }

        @Override
        public void updateSelection(int offset) {
            super.updateSelection(offset);
            Selection.setSelection((Spannable) mText, offset, getSelectionEnd());
        }

        @Override
        public void updatePosition(float x, float y) {
            int offset = getOffsetForPosition(x, y);

            // Handles can not cross and selection is at least one character
            final int selectionEnd = getSelectionEnd();
            if (offset >= selectionEnd) offset = selectionEnd - 1;

            positionAtCursorOffset(offset, false);
        }

        public ActionPopupWindow getActionPopupWindow() {
            return mActionPopupWindow;
        }
    }

    private class SelectionEndHandleView extends HandleView {

        public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) {
            super(drawableLtr, drawableRtl);
        }

        @Override
        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
            if (isRtlRun) {
                return (drawable.getIntrinsicWidth() * 3) / 4;
            } else {
                return drawable.getIntrinsicWidth() / 4;
            }
        }

        @Override
        public int getCurrentCursorOffset() {
            return TextView.this.getSelectionEnd();
        }

        @Override
        public void updateSelection(int offset) {
            super.updateSelection(offset);
            Selection.setSelection((Spannable) mText, getSelectionStart(), offset);
        }

        @Override
        public void updatePosition(float x, float y) {
            int offset = getOffsetForPosition(x, y);

            // Handles can not cross and selection is at least one character
            final int selectionStart = getSelectionStart();
            if (offset <= selectionStart) offset = selectionStart + 1;

            positionAtCursorOffset(offset, false);
        }

        public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) {
            mActionPopupWindow = actionPopupWindow;
        }
    }

    /**
     * A CursorController instance can be used to control a cursor in the text.
     * It is not used outside of {@link TextView}.
     * @hide
     */
    private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener {
        /**
         * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}.
         * See also {@link #hide()}.
         */
        public void show();

        /**
         * Hide the cursor controller from screen.
         * See also {@link #show()}.
         */
        public void hide();

        /**
         * Called when the view is detached from window. Perform house keeping task, such as
         * stopping Runnable thread that would otherwise keep a reference on the context, thus
         * preventing the activity from being recycled.
         */
        public void onDetached();
    }

    private class InsertionPointCursorController implements CursorController {
        private InsertionHandleView mHandle;

        public void show() {
            getHandle().show();
        }

        public void showWithActionPopup() {
            getHandle().showWithActionPopup();
        }

        public void hide() {
            if (mHandle != null) {
                mHandle.hide();
            }
        }

        public void onTouchModeChanged(boolean isInTouchMode) {
            if (!isInTouchMode) {
                hide();
            }
        }

        private InsertionHandleView getHandle() {
            if (mSelectHandleCenter == null) {
                mSelectHandleCenter = mContext.getResources().getDrawable(
                        mTextSelectHandleRes);
            }
            if (mHandle == null) {
                mHandle = new InsertionHandleView(mSelectHandleCenter);
            }
            return mHandle;
        }

        @Override
        public void onDetached() {
            final ViewTreeObserver observer = getViewTreeObserver();
            observer.removeOnTouchModeChangeListener(this);

            if (mHandle != null) mHandle.onDetached();
        }
    }

    private class SelectionModifierCursorController implements CursorController {
        private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds
        // The cursor controller handles, lazily created when shown.
        private SelectionStartHandleView mStartHandle;
        private SelectionEndHandleView mEndHandle;
        // The offsets of that last touch down event. Remembered to start selection there.
        private int mMinTouchOffset, mMaxTouchOffset;

        // Double tap detection
        private long mPreviousTapUpTime = 0;
        private float mPreviousTapPositionX, mPreviousTapPositionY;

        SelectionModifierCursorController() {
            resetTouchOffsets();
        }

        public void show() {
            if (isInBatchEditMode()) {
                return;
            }
            initDrawables();
            initHandles();
            hideInsertionPointCursorController();
        }

        private void initDrawables() {
            if (mSelectHandleLeft == null) {
                mSelectHandleLeft = mContext.getResources().getDrawable(
                        mTextSelectHandleLeftRes);
            }
            if (mSelectHandleRight == null) {
                mSelectHandleRight = mContext.getResources().getDrawable(
                        mTextSelectHandleRightRes);
            }
        }

        private void initHandles() {
            // Lazy object creation has to be done before updatePosition() is called.
            if (mStartHandle == null) {
                mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight);
            }
            if (mEndHandle == null) {
                mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft);
            }

            mStartHandle.show();
            mEndHandle.show();

            // Make sure both left and right handles share the same ActionPopupWindow (so that
            // moving any of the handles hides the action popup).
            mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION);
            mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow());

            hideInsertionPointCursorController();
        }

        public void hide() {
            if (mStartHandle != null) mStartHandle.hide();
            if (mEndHandle != null) mEndHandle.hide();
        }

        public void onTouchEvent(MotionEvent event) {
            // This is done even when the View does not have focus, so that long presses can start
            // selection and tap can move cursor from this tap position.
            switch (event.getActionMasked()) {
                case MotionEvent.ACTION_DOWN:
                    final float x = event.getX();
                    final float y = event.getY();

                    // Remember finger down position, to be able to start selection from there
                    mMinTouchOffset = mMaxTouchOffset = getOffsetForPosition(x, y);

                    // Double tap detection
                    long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime;
                    if (duration <= ViewConfiguration.getDoubleTapTimeout() &&
                            isPositionOnText(x, y)) {
                        final float deltaX = x - mPreviousTapPositionX;
                        final float deltaY = y - mPreviousTapPositionY;
                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
                        if (distanceSquared < mSquaredTouchSlopDistance) {
                            startSelectionActionMode();
                            mDiscardNextActionUp = true;
                        }
                    }

                    mPreviousTapPositionX = x;
                    mPreviousTapPositionY = y;
                    break;

                case MotionEvent.ACTION_POINTER_DOWN:
                case MotionEvent.ACTION_POINTER_UP:
                    // Handle multi-point gestures. Keep min and max offset positions.
                    // Only activated for devices that correctly handle multi-touch.
                    if (mContext.getPackageManager().hasSystemFeature(
                            PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) {
                        updateMinAndMaxOffsets(event);
                    }
                    break;

                case MotionEvent.ACTION_UP:
                    mPreviousTapUpTime = SystemClock.uptimeMillis();
                    break;
            }
        }

        /**
         * @param event
         */
        private void updateMinAndMaxOffsets(MotionEvent event) {
            int pointerCount = event.getPointerCount();
            for (int index = 0; index < pointerCount; index++) {
                int offset = getOffsetForPosition(event.getX(index), event.getY(index));
                if (offset < mMinTouchOffset) mMinTouchOffset = offset;
                if (offset > mMaxTouchOffset) mMaxTouchOffset = offset;
            }
        }

        public int getMinTouchOffset() {
            return mMinTouchOffset;
        }

        public int getMaxTouchOffset() {
            return mMaxTouchOffset;
        }

        public void resetTouchOffsets() {
            mMinTouchOffset = mMaxTouchOffset = -1;
        }

        /**
         * @return true iff this controller is currently used to move the selection start.
         */
        public boolean isSelectionStartDragged() {
            return mStartHandle != null && mStartHandle.isDragging();
        }

        public void onTouchModeChanged(boolean isInTouchMode) {
            if (!isInTouchMode) {
                hide();
            }
        }

        @Override
        public void onDetached() {
            final ViewTreeObserver observer = getViewTreeObserver();
            observer.removeOnTouchModeChangeListener(this);

            if (mStartHandle != null) mStartHandle.onDetached();
            if (mEndHandle != null) mEndHandle.onDetached();
        }
    }

    private void hideInsertionPointCursorController() {
        // No need to create the controller to hide it.
        if (mInsertionPointCursorController != null) {
            mInsertionPointCursorController.hide();
        }
    }

    /**
     * Hides the insertion controller and stops text selection mode, hiding the selection controller
     */
    private void hideControllers() {
        hideCursorControllers();
        hideSpanControllers();
    }

    private void hideSpanControllers() {
        if (mChangeWatcher != null) {
            mChangeWatcher.hideControllers();
        }
    }

    private void hideCursorControllers() {
        hideInsertionPointCursorController();
        stopSelectionActionMode();
    }

    /**
     * Get the character offset closest to the specified absolute position. A typical use case is to
     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
     *
     * @param x The horizontal absolute position of a point on screen
     * @param y The vertical absolute position of a point on screen
     * @return the character offset for the character whose position is closest to the specified
     *  position. Returns -1 if there is no layout.
     */
    public int getOffsetForPosition(float x, float y) {
        if (getLayout() == null) return -1;
        final int line = getLineAtCoordinate(y);
        final int offset = getOffsetAtCoordinate(line, x);
        return offset;
    }

    private float convertToLocalHorizontalCoordinate(float x) {
        x -= getTotalPaddingLeft();
        // Clamp the position to inside of the view.
        x = Math.max(0.0f, x);
        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
        x += getScrollX();
        return x;
    }

    private int getLineAtCoordinate(float y) {
        y -= getTotalPaddingTop();
        // Clamp the position to inside of the view.
        y = Math.max(0.0f, y);
        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
        y += getScrollY();
        return getLayout().getLineForVertical((int) y);
    }

    private int getOffsetAtCoordinate(int line, float x) {
        x = convertToLocalHorizontalCoordinate(x);
        return getLayout().getOffsetForHorizontal(line, x);
    }

    /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed
     * in the view. Returns false when the position is in the empty space of left/right of text.
     */
    private boolean isPositionOnText(float x, float y) {
        if (getLayout() == null) return false;

        final int line = getLineAtCoordinate(y);
        x = convertToLocalHorizontalCoordinate(x);

        if (x < getLayout().getLineLeft(line)) return false;
        if (x > getLayout().getLineRight(line)) return false;
        return true;
    }

    @Override
    public boolean onDragEvent(DragEvent event) {
        switch (event.getAction()) {
            case DragEvent.ACTION_DRAG_STARTED:
                return hasInsertionController();

            case DragEvent.ACTION_DRAG_ENTERED:
                TextView.this.requestFocus();
                return true;

            case DragEvent.ACTION_DRAG_LOCATION:
                final int offset = getOffsetForPosition(event.getX(), event.getY());
                Selection.setSelection((Spannable)mText, offset);
                return true;

            case DragEvent.ACTION_DROP:
                onDrop(event);
                return true;

            case DragEvent.ACTION_DRAG_ENDED:
            case DragEvent.ACTION_DRAG_EXITED:
            default:
                return true;
        }
    }

    private void onDrop(DragEvent event) {
        StringBuilder content = new StringBuilder("");
        ClipData clipData = event.getClipData();
        final int itemCount = clipData.getItemCount();
        for (int i=0; i < itemCount; i++) {
            Item item = clipData.getItemAt(i);
            content.append(item.coerceToText(TextView.this.mContext));
        }

        final int offset = getOffsetForPosition(event.getX(), event.getY());

        Object localState = event.getLocalState();
        DragLocalState dragLocalState = null;
        if (localState instanceof DragLocalState) {
            dragLocalState = (DragLocalState) localState;
        }
        boolean dragDropIntoItself = dragLocalState != null &&
                dragLocalState.sourceTextView == this;

        if (dragDropIntoItself) {
            if (offset >= dragLocalState.start && offset < dragLocalState.end) {
                // A drop inside the original selection discards the drop.
                return;
            }
        }

        final int originalLength = mText.length();
        long minMax = prepareSpacesAroundPaste(offset, offset, content);
        int min = extractRangeStartFromLong(minMax);
        int max = extractRangeEndFromLong(minMax);

        Selection.setSelection((Spannable) mText, max);
        ((Editable) mText).replace(min, max, content);

        if (dragDropIntoItself) {
            int dragSourceStart = dragLocalState.start;
            int dragSourceEnd = dragLocalState.end;
            if (max <= dragSourceStart) {
                // Inserting text before selection has shifted positions
                final int shift = mText.length() - originalLength;
                dragSourceStart += shift;
                dragSourceEnd += shift;
            }

            // Delete original selection
            ((Editable) mText).delete(dragSourceStart, dragSourceEnd);

            // Make sure we do not leave two adjacent spaces.
            if ((dragSourceStart == 0 ||
                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart - 1))) &&
                    (dragSourceStart == mText.length() ||
                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart)))) {
                final int pos = dragSourceStart == mText.length() ?
                        dragSourceStart - 1 : dragSourceStart;
                ((Editable) mText).delete(pos, pos + 1);
            }
        }
    }

    /**
     * @return True if this view supports insertion handles.
     */
    boolean hasInsertionController() {
        return mInsertionControllerEnabled;
    }

    /**
     * @return True if this view supports selection handles.
     */
    boolean hasSelectionController() {
        return mSelectionControllerEnabled;
    }

    InsertionPointCursorController getInsertionController() {
        if (!mInsertionControllerEnabled) {
            return null;
        }

        if (mInsertionPointCursorController == null) {
            mInsertionPointCursorController = new InsertionPointCursorController();

            final ViewTreeObserver observer = getViewTreeObserver();
            observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
        }

        return mInsertionPointCursorController;
    }

    SelectionModifierCursorController getSelectionController() {
        if (!mSelectionControllerEnabled) {
            return null;
        }

        if (mSelectionModifierCursorController == null) {
            mSelectionModifierCursorController = new SelectionModifierCursorController();

            final ViewTreeObserver observer = getViewTreeObserver();
            observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
        }

        return mSelectionModifierCursorController;
    }

    boolean isInBatchEditMode() {
        final InputMethodState ims = mInputMethodState;
        if (ims != null) {
            return ims.mBatchEditNesting > 0;
        }
        return mInBatchEditControllers;
    }

    @Override
    protected void resolveTextDirection() {
        if (hasPasswordTransformationMethod()) {
            mTextDir = TextDirectionHeuristics.LOCALE;
            return;
        }

        // Always need to resolve layout direction first
        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);

        // Then resolve text direction on the parent
        super.resolveTextDirection();

        // Now, we can select the heuristic
        int textDir = getResolvedTextDirection();
        switch (textDir) {
            default:
            case TEXT_DIRECTION_FIRST_STRONG:
                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
                break;
            case TEXT_DIRECTION_ANY_RTL:
                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
                break;
            case TEXT_DIRECTION_LTR:
                mTextDir = TextDirectionHeuristics.LTR;
                break;
            case TEXT_DIRECTION_RTL:
                mTextDir = TextDirectionHeuristics.RTL;
                break;
        }
    }

    /**
     * Subclasses will need to override this method to implement their own way of resolving
     * drawables depending on the layout direction.
     *
     * A call to the super method will be required from the subclasses implementation.
     *
     */
    protected void resolveDrawables() {
        // No need to resolve twice
        if (mResolvedDrawables) {
            return;
        }
        // No drawable to resolve
        if (mDrawables == null) {
            return;
        }
        // No relative drawable to resolve
        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
            mResolvedDrawables = true;
            return;
        }

        Drawables dr = mDrawables;
        switch(getResolvedLayoutDirection()) {
            case LAYOUT_DIRECTION_RTL:
                if (dr.mDrawableStart != null) {
                    dr.mDrawableRight = dr.mDrawableStart;

                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
                }
                if (dr.mDrawableEnd != null) {
                    dr.mDrawableLeft = dr.mDrawableEnd;

                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
                }
                break;

            case LAYOUT_DIRECTION_LTR:
            default:
                if (dr.mDrawableStart != null) {
                    dr.mDrawableLeft = dr.mDrawableStart;

                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
                }
                if (dr.mDrawableEnd != null) {
                    dr.mDrawableRight = dr.mDrawableEnd;

                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
                }
                break;
        }
        mResolvedDrawables = true;
    }

    protected void resetResolvedDrawables() {
        mResolvedDrawables = false;
    }

    /**
     * @hide
     */
    protected void viewClicked(InputMethodManager imm) {
        if (imm != null) {
            imm.viewClicked(this);
        }
    }

    @ViewDebug.ExportedProperty(category = "text")
    private CharSequence            mText;
    private CharSequence            mTransformed;
    private BufferType              mBufferType = BufferType.NORMAL;

    private int                     mInputType = EditorInfo.TYPE_NULL;
    private CharSequence            mHint;
    private Layout                  mHintLayout;

    private KeyListener             mInput;

    private MovementMethod          mMovement;
    private TransformationMethod    mTransformation;
    private boolean                 mAllowTransformationLengthChange;
    private ChangeWatcher           mChangeWatcher;

    private ArrayList<TextWatcher>  mListeners = null;

    // display attributes
    private final TextPaint         mTextPaint;
    private boolean                 mUserSetTextScaleX;
    private final Paint             mHighlightPaint;
    private int                     mHighlightColor = 0x6633B5E5;
    /**
     * This is temporarily visible to fix bug 3085564 in webView. Do not rely on
     * this field being protected. Will be restored as private when lineHeight
     * feature request 3215097 is implemented
     * @hide
     */
    protected Layout                mLayout;

    private long                    mShowCursor;
    private Blink                   mBlink;
    private boolean                 mCursorVisible = true;

    // Cursor Controllers.
    private InsertionPointCursorController mInsertionPointCursorController;
    private SelectionModifierCursorController mSelectionModifierCursorController;
    private ActionMode              mSelectionActionMode;
    private boolean                 mInsertionControllerEnabled;
    private boolean                 mSelectionControllerEnabled;
    private boolean                 mInBatchEditControllers;

    // These are needed to desambiguate a long click. If the long click comes from ones of these, we
    // select from the current cursor position. Otherwise, select from long pressed position.
    private boolean                 mDPadCenterIsDown = false;
    private boolean                 mEnterKeyIsDown = false;
    private boolean                 mContextMenuTriggeredByKey = false;

    private boolean                 mSelectAllOnFocus = false;

    private int                     mGravity = Gravity.TOP | Gravity.START;
    private boolean                 mHorizontallyScrolling;

    private int                     mAutoLinkMask;
    private boolean                 mLinksClickable = true;

    private float                   mSpacingMult = 1.0f;
    private float                   mSpacingAdd = 0.0f;
    private boolean                 mTextIsSelectable = false;

    private static final int        LINES = 1;
    private static final int        EMS = LINES;
    private static final int        PIXELS = 2;

    private int                     mMaximum = Integer.MAX_VALUE;
    private int                     mMaxMode = LINES;
    private int                     mMinimum = 0;
    private int                     mMinMode = LINES;

    private int                     mOldMaximum = mMaximum;
    private int                     mOldMaxMode = mMaxMode;

    private int                     mMaxWidth = Integer.MAX_VALUE;
    private int                     mMaxWidthMode = PIXELS;
    private int                     mMinWidth = 0;
    private int                     mMinWidthMode = PIXELS;

    private boolean                 mSingleLine;
    private int                     mDesiredHeightAtMeasure = -1;
    private boolean                 mIncludePad = true;

    // tmp primitives, so we don't alloc them on each draw
    private Path                    mHighlightPath;
    private boolean                 mHighlightPathBogus = true;
    private static final RectF      sTempRect = new RectF();

    // XXX should be much larger
    private static final int        VERY_WIDE = 16384;

    private static final int        BLINK = 500;

    private static final int ANIMATED_SCROLL_GAP = 250;
    private long mLastScroll;
    private Scroller mScroller = null;

    private BoringLayout.Metrics mBoring;
    private BoringLayout.Metrics mHintBoring;

    private BoringLayout mSavedLayout, mSavedHintLayout;

    private TextDirectionHeuristic mTextDir = null;

    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
    private InputFilter[] mFilters = NO_FILTERS;
    private static final Spanned EMPTY_SPANNED = new SpannedString("");
    private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20;
    // System wide time for last cut or copy action.
    private static long sLastCutOrCopyTime;
    // Used to highlight a word when it is corrected by the IME
    private CorrectionHighlighter mCorrectionHighlighter;
    // New state used to change background based on whether this TextView is multiline.
    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
}
