android中WebView源码

/** * 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.webkit;import android.annotation.Widget;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.DialogInterface.OnCancelListener;import android.content.pm.PackageManager;import android.database.DataSetObserver;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.BitmapShader;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Interpolator;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.Picture;import android.graphics.Point;import android.graphics.Rect;import android.graphics.RectF;import android.graphics.Region;import android.graphics.Shader;import android.graphics.drawable.Drawable;import android.net.Uri;import android.net.http.SslCertificate;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.os.ServiceManager;import android.os.SystemClock;import android.text.IClipboard;import android.text.Selection;import android.text.Spannable;import android.util.AttributeSet;import android.util.EventLog;import android.util.Log;import android.util.TypedValue;import android.view.Gravity;import android.view.KeyEvent;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.ScaleGestureDetector;import android.view.SoundEffectConstants;import android.view.VelocityTracker;import android.view.View;import android.view.ViewConfiguration;import android.view.ViewGroup;import android.view.ViewTreeObserver;import android.view.animation.AlphaAnimation;import android.view.inputmethod.EditorInfo;import android.view.inputmethod.InputConnection;import android.view.inputmethod.InputMethodManager;import android.webkit.WebTextView.AutoCompleteAdapter;import android.webkit.WebViewCore.EventHub;import android.webkit.WebViewCore.TouchEventData;import android.widget.AbsoluteLayout;import android.widget.Adapter;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.CheckedTextView;import android.widget.FrameLayout;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.Scroller;import android.widget.Toast;import android.widget.ZoomButtonsController;import android.widget.ZoomControls;import android.widget.AdapterView.OnItemClickListener;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.net.URLDecoder;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Set;import junit.framework.Assert;/*** * <p>A View that displays web pages. This class is the basis upon which you * can roll your own web browser or simply display some online content within your Activity. * It uses the WebKit rendering engine to display * web pages and includes methods to navigate forward and backward * through a history, zoom in and out, perform text searches and more.</p> * <p>To enable the built-in zoom, set * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} * (introduced in API version 3). * <p>Note that, in order for your Activity to access the Internet and load web pages * in a WebView, you must add the {@code INTERNET} permissions to your * Android Manifest file:</p> * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> * * <p>This must be a child of the <a * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> * element.</p> * * <h3>Basic usage</h3> * * <p>By default, a WebView provides no browser-like widgets, does not * enable JavaScript and web page errors are ignored. If your goal is only * to display some HTML as a part of your UI, this is probably fine; * the user won't need to interact with the web page beyond reading * it, and the web page won't need to interact with the user. If you * actually want a full-blown web browser, then you probably want to * invoke the Browser application with a URL Intent rather than show it * with a WebView. For example: * <pre> * Uri uri = Uri.parse("http://www.example.com"); * Intent intent = new Intent(Intent.ACTION_VIEW, uri); * startActivity(intent); * </pre> * <p>See {@link android.content.Intent} for more information.</p> * * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, * or set the entire Activity window as a WebView during {@link * android.app.Activity#onCreate(Bundle) onCreate()}:</p> * <pre class="prettyprint"> * WebView webview = new WebView(this); * setContentView(webview); * </pre> * * <p>Then load the desired web page:</p> * <pre> * // Simplest usage: note that an exception will NOT be thrown * // if there is an error loading this page (see below). * webview.loadUrl("http://slashdot.org/"); * * // OR, you can also load from an HTML string: * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; * webview.loadData(summary, "text/html", "utf-8"); * // ... although note that there are restrictions on what this HTML can do. * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. * </pre> * * <p>A WebView has several customization points where you can add your * own behavior. These are:</p> * * <ul> *   <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. *       This class is called when something that might impact a *       browser UI happens, for instance, progress updates and *       JavaScript alerts are sent here (see <a * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). *   </li> *   <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. *       It will be called when things happen that impact the *       rendering of the content, eg, errors or form submissions. You *       can also intercept URL loading here (via {@link * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) * shouldOverrideUrlLoading()}).</li> *   <li>Modifying the {@link android.webkit.WebSettings}, such as * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) * setJavaScriptEnabled()}. </li> *   <li>Adding JavaScript-to-Java interfaces with the {@link * android.webkit.WebView#addJavascriptInterface} method. *       This lets you bind Java objects into the WebView so they can be *       controlled from the web pages JavaScript.</li> * </ul> * * <p>Here's a more complicated example, showing error handling, *    settings, and progress notification:</p> * * <pre class="prettyprint"> * // Let's display the progress in the activity title bar, like the * // browser app does. * getWindow().requestFeature(Window.FEATURE_PROGRESS); * * webview.getSettings().setJavaScriptEnabled(true); * * final Activity activity = this; * webview.setWebChromeClient(new WebChromeClient() { *   public void onProgressChanged(WebView view, int progress) { *     // Activities and WebViews measure progress with different scales. *     // The progress meter will automatically disappear when we reach 100% *     activity.setProgress(progress * 1000); *   } * }); * webview.setWebViewClient(new WebViewClient() { *   public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { *     Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); *   } * }); * * webview.loadUrl("http://slashdot.org/"); * </pre> * * <h3>Cookie and window management</h3> * * <p>For obvious security reasons, your application has its own * cache, cookie store etc.—it does not share the Browser * application's data. Cookies are managed on a separate thread, so * operations like index building don't block the UI * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} * if you want to use cookies in your application. * </p> * * <p>By default, requests by the HTML to open new windows are * ignored. This is true whether they be opened by JavaScript or by * the target attribute on a link. You can customize your * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, * and render them in whatever manner you want.</p> * * <p>The standard behavior for an Activity is to be destroyed and * recreated when the device orientation or any other configuration changes. This will cause * the WebView to reload the current page. If you don't want that, you * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} * changes, and then just leave the WebView alone. It'll automatically * re-orient itself as appropriate. Read <a * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for * more information about how to handle configuration changes during runtime.</p> * * * <h3>Building web pages to support different screen densities</h3> * * <p>The screen density of a device is based on the screen resolution. A screen with low density * has fewer available pixels per inch, where a screen with high density * has more — sometimes significantly more — pixels per inch. The density of a * screen is important because, other things being equal, a UI element (such as a button) whose * height and width are defined in terms of screen pixels will appear larger on the lower density * screen and smaller on the higher density screen. * For simplicity, Android collapses all actual screen densities into three generalized densities: * high, medium, and low.</p> * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels * are bigger). * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help * you (as a web developer) target screens with different screen densities.</p> * <p>Here's a summary of the features you can use to handle different screen densities:</p> * <ul> * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the * default scaling factor used for the current device. For example, if the value of {@code * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device * and default scaling is not applied to the web page; if the value is "1.5", then the device is * considered a high density device (hdpi) and the page content is scaled 1.5x; if the * value is "0.75", then the device is considered a low density device (ldpi) and the content is * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property * (discussed below), then you can stop this default scaling behavior.</li> * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen * densities for which this style sheet is to be used. The corresponding value should be either * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium * density, or high density screens, respectively. For example: * <pre> * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, * which is the high density pixel ratio.</p> * </li> * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use * this to specify the target density for which the web page is designed, using the following * values: * <ul> * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never * occurs.</li> * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down * as appropriate.</li> * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and * low density screens scale down. This is also the default behavior.</li> * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up * as appropriate.</li> * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted * values are 70-400).</li> * </ul> * <p>Here's an example meta tag to specify the target density:</p> * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> * </ul> * <p>If you want to modify your web page for different densities, by using the {@code * -webkit-device-pixel-ratio} CSS media query and/or the {@code * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta * property to {@code device-dpi}. This stops Android from performing scaling in your web page and * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> * *  */@Widgetpublic class WebView extends AbsoluteLayout        implements ViewTreeObserver.OnGlobalFocusChangeListener,        ViewGroup.OnHierarchyChangeListener {    // enable debug output for drag trackers    private static final boolean DEBUG_DRAG_TRACKER = false;    // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing    // the screen all-the-time. Good for profiling our drawing code    static private final boolean AUTO_REDRAW_HACK = false;    // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK    private boolean mAutoRedraw;    static final String LOGTAG = "webview";    private static class ExtendedZoomControls extends FrameLayout {        public ExtendedZoomControls(Context context, AttributeSet attrs) {            super(context, attrs);            LayoutInflater inflater = (LayoutInflater)                    context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);            inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true);            mPlusMinusZoomControls = (ZoomControls) findViewById(                    com.android.internal.R.id.zoomControls);            findViewById(com.android.internal.R.id.zoomMagnify).setVisibility(                    View.GONE);        }        public void show(boolean showZoom, boolean canZoomOut) {            mPlusMinusZoomControls.setVisibility(                    showZoom ? View.VISIBLE : View.GONE);            fade(View.VISIBLE, 0.0f, 1.0f);        }        public void hide() {            fade(View.GONE, 1.0f, 0.0f);        }        private void fade(int visibility, float startAlpha, float endAlpha) {            AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha);            anim.setDuration(500);            startAnimation(anim);            setVisibility(visibility);        }        public boolean hasFocus() {            return mPlusMinusZoomControls.hasFocus();        }        public void setOnZoomInClickListener(OnClickListener listener) {            mPlusMinusZoomControls.setOnZoomInClickListener(listener);        }        public void setOnZoomOutClickListener(OnClickListener listener) {            mPlusMinusZoomControls.setOnZoomOutClickListener(listener);        }        ZoomControls    mPlusMinusZoomControls;    }    /***     *  Transportation object for returning WebView across thread boundaries.     */    public class WebViewTransport {        private WebView mWebview;        /***         * Set the WebView to the transportation object.         * @param webview The WebView to transport.         */        public synchronized void setWebView(WebView webview) {            mWebview = webview;        }        /***         * Return the WebView object.         * @return WebView The transported WebView object.         */        public synchronized WebView getWebView() {            return mWebview;        }    }    // A final CallbackProxy shared by WebViewCore and BrowserFrame.    private final CallbackProxy mCallbackProxy;    private final WebViewDatabase mDatabase;    // SSL certificate for the main top-level page (if secure)    private SslCertificate mCertificate;    // Native WebView pointer that is 0 until the native object has been    // created.    private int mNativeClass;    // This would be final but it needs to be set to null when the WebView is    // destroyed.    private WebViewCore mWebViewCore;    // Handler for dispatching UI messages.    /** package */ final Handler mPrivateHandler = new PrivateHandler();    private WebTextView mWebTextView;    // Used to ignore changes to webkit text that arrives to the UI side after    // more key events.    private int mTextGeneration;    // Used by WebViewCore to create child views.    /** package */ final ViewManager mViewManager;    // Used to display in full screen mode    PluginFullScreenHolder mFullScreenHolder;    /***     * Position of the last touch event.     */    private float mLastTouchX;    private float mLastTouchY;    /***     * Time of the last touch event.     */    private long mLastTouchTime;    /***     * Time of the last time sending touch event to WebViewCore     */    private long mLastSentTouchTime;    /***     * The minimum elapsed time before sending another ACTION_MOVE event to     * WebViewCore. This really should be tuned for each type of the devices.     * For example in Google Map api test case, it takes Dream device at least     * 150ms to do a full cycle in the WebViewCore by processing a touch event,     * triggering the layout and drawing the picture. While the same process     * takes 60+ms on the current high speed device. If we make     * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent     * to WebViewCore queue and the real layout and draw events will be pushed     * to further, which slows down the refresh rate. Choose 50 to favor the     * current high speed devices. For Dream like devices, 100 is a better     * choice. Maybe make this in the buildspec later.     */    private static final int TOUCH_SENT_INTERVAL = 50;    private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL;    /***     * Helper class to get velocity for fling     */    VelocityTracker mVelocityTracker;    private int mMaximumFling;    private float mLastVelocity;    private float mLastVelX;    private float mLastVelY;    /***     * Touch mode     */    private int mTouchMode = TOUCH_DONE_MODE;    private static final int TOUCH_INIT_MODE = 1;    private static final int TOUCH_DRAG_START_MODE = 2;    private static final int TOUCH_DRAG_MODE = 3;    private static final int TOUCH_SHORTPRESS_START_MODE = 4;    private static final int TOUCH_SHORTPRESS_MODE = 5;    private static final int TOUCH_DOUBLE_TAP_MODE = 6;    private static final int TOUCH_DONE_MODE = 7;    private static final int TOUCH_SELECT_MODE = 8;    private static final int TOUCH_PINCH_DRAG = 9;    // Whether to forward the touch events to WebCore    private boolean mForwardTouchEvents = false;    // Whether to prevent default during touch. The initial value depends on    // mForwardTouchEvents. If WebCore wants all the touch events, it says yes    // for touch down. Otherwise UI will wait for the answer of the first    // confirmed move before taking over the control.    private static final int PREVENT_DEFAULT_NO = 0;    private static final int PREVENT_DEFAULT_MAYBE_YES = 1;    private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2;    private static final int PREVENT_DEFAULT_YES = 3;    private static final int PREVENT_DEFAULT_IGNORE = 4;    private int mPreventDefault = PREVENT_DEFAULT_IGNORE;    // true when the touch movement exceeds the slop    private boolean mConfirmMove;    // if true, touch events will be first processed by WebCore, if prevent    // default is not set, the UI will continue handle them.    private boolean mDeferTouchProcess;    // to avoid interfering with the current touch events, track them    // separately. Currently no snapping or fling in the deferred process mode    private int mDeferTouchMode = TOUCH_DONE_MODE;    private float mLastDeferTouchX;    private float mLastDeferTouchY;    // To keep track of whether the current drag was initiated by a WebTextView,    // so that we know not to hide the cursor    boolean mDragFromTextInput;    // Whether or not to draw the cursor ring.    private boolean mDrawCursorRing = true;    // true if onPause has been called (and not onResume)    private boolean mIsPaused;    // true if, during a transition to a new page, we're delaying    // deleting a root layer until there's something to draw of the new page.    private boolean mDelayedDeleteRootLayer;    /***     * Customizable constant     */    // pre-computed square of ViewConfiguration.getScaledTouchSlop()    private int mTouchSlopSquare;    // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop()    private int mDoubleTapSlopSquare;    // pre-computed density adjusted navigation slop    private int mNavSlop;    // This should be ViewConfiguration.getTapTimeout()    // But system time out is 100ms, which is too short for the browser.    // In the browser, if it switches out of tap too soon, jump tap won't work.    private static final int TAP_TIMEOUT = 200;    // This should be ViewConfiguration.getLongPressTimeout()    // But system time out is 500ms, which is too short for the browser.    // With a short timeout, it's difficult to treat trigger a short press.    private static final int LONG_PRESS_TIMEOUT = 1000;    // needed to avoid flinging after a pause of no movement    private static final int MIN_FLING_TIME = 250;    // draw unfiltered after drag is held without movement    private static final int MOTIONLESS_TIME = 100;    // The time that the Zoom Controls are visible before fading away    private static final long ZOOM_CONTROLS_TIMEOUT =            ViewConfiguration.getZoomControlsTimeout();    // The amount of content to overlap between two screens when going through    // pages with the space bar, in pixels.    private static final int PAGE_SCROLL_OVERLAP = 24;    /***     * These prevent calling requestLayout if either dimension is fixed. This     * depends on the layout parameters and the measure specs.     */    boolean mWidthCanMeasure;    boolean mHeightCanMeasure;    // Remember the last dimensions we sent to the native side so we can avoid    // sending the same dimensions more than once.    int mLastWidthSent;    int mLastHeightSent;    private int mContentWidth;   // cache of value from WebViewCore    private int mContentHeight;  // cache of value from WebViewCore    // Need to have the separate control for horizontal and vertical scrollbar    // style than the View's single scrollbar style    private boolean mOverlayHorizontalScrollbar = true;    private boolean mOverlayVerticalScrollbar = false;    // our standard speed. this way small distances will be traversed in less    // time than large distances, but we cap the duration, so that very large    // distances won't take too long to get there.    private static final int STD_SPEED = 480;  // pixels per second    // time for the longest scroll animation    private static final int MAX_DURATION = 750;   // milliseconds    private static final int SLIDE_TITLE_DURATION = 500;   // milliseconds    private Scroller mScroller;    private boolean mWrapContent;    private static final int MOTIONLESS_FALSE           = 0;    private static final int MOTIONLESS_PENDING         = 1;    private static final int MOTIONLESS_TRUE            = 2;    private static final int MOTIONLESS_IGNORE          = 3;    private int mHeldMotionless;    // whether support multi-touch    private boolean mSupportMultiTouch;    // use the framework's ScaleGestureDetector to handle multi-touch    private ScaleGestureDetector mScaleDetector;    // the anchor point in the document space where VIEW_SIZE_CHANGED should    // apply to    private int mAnchorX;    private int mAnchorY;    /**     * Private message ids     */    private static final int REMEMBER_PASSWORD          = 1;    private static final int NEVER_REMEMBER_PASSWORD    = 2;    private static final int SWITCH_TO_SHORTPRESS       = 3;    private static final int SWITCH_TO_LONGPRESS        = 4;    private static final int RELEASE_SINGLE_TAP         = 5;    private static final int REQUEST_FORM_DATA          = 6;    private static final int RESUME_WEBCORE_PRIORITY    = 7;    private static final int DRAG_HELD_MOTIONLESS       = 8;    private static final int AWAKEN_SCROLL_BARS         = 9;    private static final int PREVENT_DEFAULT_TIMEOUT    = 10;    private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD;    private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT;    /**     * Package message ids     */    //! arg1=x, arg2=y    static final int SCROLL_TO_MSG_ID                   = 101;    static final int SCROLL_BY_MSG_ID                   = 102;    //! arg1=x, arg2=y    static final int SPAWN_SCROLL_TO_MSG_ID             = 103;    //! arg1=x, arg2=y    static final int SYNC_SCROLL_TO_MSG_ID              = 104;    static final int NEW_PICTURE_MSG_ID                 = 105;    static final int UPDATE_TEXT_ENTRY_MSG_ID           = 106;    static final int WEBCORE_INITIALIZED_MSG_ID         = 107;    static final int UPDATE_TEXTFIELD_TEXT_MSG_ID       = 108;    static final int UPDATE_ZOOM_RANGE                  = 109;    static final int MOVE_OUT_OF_PLUGIN                 = 110;    static final int CLEAR_TEXT_ENTRY                   = 111;    static final int UPDATE_TEXT_SELECTION_MSG_ID       = 112;    static final int SHOW_RECT_MSG_ID                   = 113;    static final int LONG_PRESS_CENTER                  = 114;    static final int PREVENT_TOUCH_ID                   = 115;    static final int WEBCORE_NEED_TOUCH_EVENTS          = 116;    // obj=Rect in doc coordinates    static final int INVAL_RECT_MSG_ID                  = 117;    static final int REQUEST_KEYBOARD                   = 118;    static final int DO_MOTION_UP                       = 119;    static final int SHOW_FULLSCREEN                    = 120;    static final int HIDE_FULLSCREEN                    = 121;    static final int DOM_FOCUS_CHANGED                  = 122;    static final int IMMEDIATE_REPAINT_MSG_ID           = 123;    static final int SET_ROOT_LAYER_MSG_ID              = 124;    static final int RETURN_LABEL                       = 125;    static final int FIND_AGAIN                         = 126;    static final int CENTER_FIT_RECT                    = 127;    static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128;    static final int SET_SCROLLBAR_MODES                = 129;    private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID;    private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES;    static final String[] HandlerPrivateDebugString = {        "REMEMBER_PASSWORD", //              = 1;        "NEVER_REMEMBER_PASSWORD", //        = 2;        "SWITCH_TO_SHORTPRESS", //           = 3;        "SWITCH_TO_LONGPRESS", //            = 4;        "RELEASE_SINGLE_TAP", //             = 5;        "REQUEST_FORM_DATA", //              = 6;        "RESUME_WEBCORE_PRIORITY", //        = 7;        "DRAG_HELD_MOTIONLESS", //           = 8;        "AWAKEN_SCROLL_BARS", //             = 9;        "PREVENT_DEFAULT_TIMEOUT" //         = 10;    };    static final String[] HandlerPackageDebugString = {        "SCROLL_TO_MSG_ID", //               = 101;        "SCROLL_BY_MSG_ID", //               = 102;        "SPAWN_SCROLL_TO_MSG_ID", //         = 103;        "SYNC_SCROLL_TO_MSG_ID", //          = 104;        "NEW_PICTURE_MSG_ID", //             = 105;        "UPDATE_TEXT_ENTRY_MSG_ID", //       = 106;        "WEBCORE_INITIALIZED_MSG_ID", //     = 107;        "UPDATE_TEXTFIELD_TEXT_MSG_ID", //   = 108;        "UPDATE_ZOOM_RANGE", //              = 109;        "MOVE_OUT_OF_PLUGIN", //             = 110;        "CLEAR_TEXT_ENTRY", //               = 111;        "UPDATE_TEXT_SELECTION_MSG_ID", //   = 112;        "SHOW_RECT_MSG_ID", //               = 113;        "LONG_PRESS_CENTER", //              = 114;        "PREVENT_TOUCH_ID", //               = 115;        "WEBCORE_NEED_TOUCH_EVENTS", //      = 116;        "INVAL_RECT_MSG_ID", //              = 117;        "REQUEST_KEYBOARD", //               = 118;        "DO_MOTION_UP", //                   = 119;        "SHOW_FULLSCREEN", //                = 120;        "HIDE_FULLSCREEN", //                = 121;        "DOM_FOCUS_CHANGED", //              = 122;        "IMMEDIATE_REPAINT_MSG_ID", //       = 123;        "SET_ROOT_LAYER_MSG_ID", //          = 124;        "RETURN_LABEL", //                   = 125;        "FIND_AGAIN", //                     = 126;        "CENTER_FIT_RECT", //                = 127;        "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128;        "SET_SCROLLBAR_MODES" //             = 129;    };    // If the site doesn't use the viewport meta tag to specify the viewport,    // use DEFAULT_VIEWPORT_WIDTH as the default viewport width    static final int DEFAULT_VIEWPORT_WIDTH = 800;    // normally we try to fit the content to the minimum preferred width    // calculated by the Webkit. To avoid the bad behavior when some site's    // minimum preferred width keeps growing when changing the viewport width or    // the minimum preferred width is huge, an upper limit is needed.    static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH;    // default scale limit. Depending on the display density    private static float DEFAULT_MAX_ZOOM_SCALE;    private static float DEFAULT_MIN_ZOOM_SCALE;    // scale limit, which can be set through viewport meta tag in the web page    private float mMaxZoomScale;    private float mMinZoomScale;    private boolean mMinZoomScaleFixed = true;    // initial scale in percent. 0 means using default.    private int mInitialScaleInPercent = 0;    // while in the zoom overview mode, the page's width is fully fit to the    // current window. The page is alive, in another words, you can click to    // follow the links. Double tap will toggle between zoom overview mode and    // the last zoom scale.    boolean mInZoomOverview = false;    // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn,    // engadget always have wider mContentWidth no matter what viewport size is.    int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH;    float mTextWrapScale;    // default scale. Depending on the display density.    static int DEFAULT_SCALE_PERCENT;    private float mDefaultScale;    private static float MINIMUM_SCALE_INCREMENT = 0.01f;    // set to true temporarily during ScaleGesture triggered zoom    private boolean mPreviewZoomOnly = false;    // computed scale and inverse, from mZoomWidth.    private float mActualScale;    private float mInvActualScale;    // if this is non-zero, it is used on drawing rather than mActualScale    private float mZoomScale;    private float mInvInitialZoomScale;    private float mInvFinalZoomScale;    private int mInitialScrollX;    private int mInitialScrollY;    private long mZoomStart;    private static final int ZOOM_ANIMATION_LENGTH = 500;    private boolean mUserScroll = false;    private int mSnapScrollMode = SNAP_NONE;    private static final int SNAP_NONE = 0;    private static final int SNAP_LOCK = 1; // not a separate state    private static final int SNAP_X = 2; // may be combined with SNAP_LOCK    private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK    private boolean mSnapPositive;    // keep these in sync with their counterparts in WebView.cpp    private static final int DRAW_EXTRAS_NONE = 0;    private static final int DRAW_EXTRAS_FIND = 1;    private static final int DRAW_EXTRAS_SELECTION = 2;    private static final int DRAW_EXTRAS_CURSOR_RING = 3;    // keep this in sync with WebCore:ScrollbarMode in WebKit    private static final int SCROLLBAR_AUTO = 0;    private static final int SCROLLBAR_ALWAYSOFF = 1;    // as we auto fade scrollbar, this is ignored.    private static final int SCROLLBAR_ALWAYSON = 2;    private int mHorizontalScrollBarMode = SCROLLBAR_AUTO;    private int mVerticalScrollBarMode = SCROLLBAR_AUTO;    // Used to match key downs and key ups    private boolean mGotKeyDown;    /** package */ static boolean mLogEvent = true;    // for event log    private long mLastTouchUpTime = 0;    /***     * URI scheme for telephone number     */    public static final String SCHEME_TEL = "tel:";    /***     * URI scheme for email address     */    public static final String SCHEME_MAILTO = "mailto:";    /***     * URI scheme for map address     */    public static final String SCHEME_GEO = "geo:0,0?q=";    private int mBackgroundColor = Color.WHITE;    // Used to notify listeners of a new picture.    private PictureListener mPictureListener;    /***     * Interface to listen for new pictures as they change.     */    public interface PictureListener {        /***         * Notify the listener that the picture has changed.         * @param view The WebView that owns the picture.         * @param picture The new picture.         */        public void onNewPicture(WebView view, Picture picture);    }    // FIXME: Want to make this public, but need to change the API file.    public /**static*/ class HitTestResult {        /***         * Default HitTestResult, where the target is unknown         */        public static final int UNKNOWN_TYPE = 0;        /***         * HitTestResult for hitting a HTML::a tag         */        public static final int ANCHOR_TYPE = 1;        /***         * HitTestResult for hitting a phone number         */        public static final int PHONE_TYPE = 2;        /***         * HitTestResult for hitting a map address         */        public static final int GEO_TYPE = 3;        /***         * HitTestResult for hitting an email address         */        public static final int EMAIL_TYPE = 4;        /***         * HitTestResult for hitting an HTML::img tag         */        public static final int IMAGE_TYPE = 5;        /***         * HitTestResult for hitting a HTML::a tag which contains HTML::img         */        public static final int IMAGE_ANCHOR_TYPE = 6;        /***         * HitTestResult for hitting a HTML::a tag with src=http         */        public static final int SRC_ANCHOR_TYPE = 7;        /***         * HitTestResult for hitting a HTML::a tag with src=http + HTML::img         */        public static final int SRC_IMAGE_ANCHOR_TYPE = 8;        /***         * HitTestResult for hitting an edit text area         */        public static final int EDIT_TEXT_TYPE = 9;        private int mType;        private String mExtra;        HitTestResult() {            mType = UNKNOWN_TYPE;        }        private void setType(int type) {            mType = type;        }        private void setExtra(String extra) {            mExtra = extra;        }        public int getType() {            return mType;        }        public String getExtra() {            return mExtra;        }    }    // The View containing the zoom controls    private ExtendedZoomControls mZoomControls;    private Runnable mZoomControlRunnable;    // mZoomButtonsController will be lazy initialized in    // getZoomButtonsController() to get better performance.    private ZoomButtonsController mZoomButtonsController;    // These keep track of the center point of the zoom.  They are used to    // determine the point around which we should zoom.    private float mZoomCenterX;    private float mZoomCenterY;    private ZoomButtonsController.OnZoomListener mZoomListener =            new ZoomButtonsController.OnZoomListener() {        public void onVisibilityChanged(boolean visible) {            if (visible) {                switchOutDrawHistory();                // Bring back the hidden zoom controls.                mZoomButtonsController.getZoomControls().setVisibility(                        View.VISIBLE);                updateZoomButtonsEnabled();            }        }        public void onZoom(boolean zoomIn) {            if (zoomIn) {                zoomIn();            } else {                zoomOut();            }            updateZoomButtonsEnabled();        }    };    /***     * Construct a new WebView with a Context object.     * @param context A Context object used to access application assets.     */    public WebView(Context context) {        this(context, null);    }    /***     * Construct a new WebView with layout parameters.     * @param context A Context object used to access application assets.     * @param attrs An AttributeSet passed to our parent.     */    public WebView(Context context, AttributeSet attrs) {        this(context, attrs, com.android.internal.R.attr.webViewStyle);    }    /***     * Construct a new WebView with layout parameters and a default style.     * @param context A Context object used to access application assets.     * @param attrs An AttributeSet passed to our parent.     * @param defStyle The default style resource ID.     */    public WebView(Context context, AttributeSet attrs, int defStyle) {        this(context, attrs, defStyle, null);    }    /***     * Construct a new WebView with layout parameters, a default style and a set     * of custom Javscript interfaces to be added to the WebView at initialization     * time. This guarantees that these interfaces will be available when the JS     * context is initialized.     * @param context A Context object used to access application assets.     * @param attrs An AttributeSet passed to our parent.     * @param defStyle The default style resource ID.     * @param javascriptInterfaces is a Map of intareface names, as keys, and     * object implementing those interfaces, as values.     * @hide pending API council approval.     */    protected WebView(Context context, AttributeSet attrs, int defStyle,            Map<String, Object> javascriptInterfaces) {        super(context, attrs, defStyle);        init();        mCallbackProxy = new CallbackProxy(context, this);        mViewManager = new ViewManager(this);        mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces);        mDatabase = WebViewDatabase.getInstance(context);        mScroller = new Scroller(context);        updateMultiTouchSupport(context);    }    void updateMultiTouchSupport(Context context) {        WebSettings settings = getSettings();        mSupportMultiTouch = context.getPackageManager().hasSystemFeature(                PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH)                && settings.supportZoom() && settings.getBuiltInZoomControls();        if (mSupportMultiTouch && (mScaleDetector == null)) {            mScaleDetector = new ScaleGestureDetector(context,                    new ScaleDetectorListener());        } else if (!mSupportMultiTouch && (mScaleDetector != null)) {            mScaleDetector = null;        }    }    private void updateZoomButtonsEnabled() {        if (mZoomButtonsController == null) return;        boolean canZoomIn = mActualScale < mMaxZoomScale;        boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview;        if (!canZoomIn && !canZoomOut) {            // Hide the zoom in and out buttons, as well as the fit to page            // button, if the page cannot zoom            mZoomButtonsController.getZoomControls().setVisibility(View.GONE);        } else {            // Set each one individually, as a page may be able to zoom in            // or out.            mZoomButtonsController.setZoomInEnabled(canZoomIn);            mZoomButtonsController.setZoomOutEnabled(canZoomOut);        }    }    private void init() {        setWillNotDraw(false);        setFocusable(true);        setFocusableInTouchMode(true);        setClickable(true);        setLongClickable(true);        final ViewConfiguration configuration = ViewConfiguration.get(getContext());        int slop = configuration.getScaledTouchSlop();        mTouchSlopSquare = slop * slop;        mMinLockSnapReverseDistance = slop;        slop = configuration.getScaledDoubleTapSlop();        mDoubleTapSlopSquare = slop * slop;        final float density = getContext().getResources().getDisplayMetrics().density;        // use one line height, 16 based on our current default font, for how        // far we allow a touch be away from the edge of a link        mNavSlop = (int) (16 * density);        // density adjusted scale factors        DEFAULT_SCALE_PERCENT = (int) (100 * density);        mDefaultScale = density;        mActualScale = density;        mInvActualScale = 1 / density;        mTextWrapScale = density;        DEFAULT_MAX_ZOOM_SCALE = 4.0f * density;        DEFAULT_MIN_ZOOM_SCALE = 0.25f * density;        mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE;        mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE;        mMaximumFling = configuration.getScaledMaximumFlingVelocity();    }    /** package */void updateDefaultZoomDensity(int zoomDensity) {        final float density = getContext().getResources().getDisplayMetrics().density                * 100 / zoomDensity;        if (Math.abs(density - mDefaultScale) > 0.01) {            float scaleFactor = density / mDefaultScale;            // adjust the limits            mNavSlop = (int) (16 * density);            DEFAULT_SCALE_PERCENT = (int) (100 * density);            DEFAULT_MAX_ZOOM_SCALE = 4.0f * density;            DEFAULT_MIN_ZOOM_SCALE = 0.25f * density;            mDefaultScale = density;            mMaxZoomScale *= scaleFactor;            mMinZoomScale *= scaleFactor;            setNewZoomScale(mActualScale * scaleFactor, true, false);        }    }    /** package */ boolean onSavePassword(String schemePlusHost, String username,            String password, final Message resumeMsg) {       boolean rVal = false;       if (resumeMsg == null) {           // null resumeMsg implies saving password silently           mDatabase.setUsernamePassword(schemePlusHost, username, password);       } else {            final Message remember = mPrivateHandler.obtainMessage(                    REMEMBER_PASSWORD);            remember.getData().putString("host", schemePlusHost);            remember.getData().putString("username", username);            remember.getData().putString("password", password);            remember.obj = resumeMsg;            final Message neverRemember = mPrivateHandler.obtainMessage(                    NEVER_REMEMBER_PASSWORD);            neverRemember.getData().putString("host", schemePlusHost);            neverRemember.getData().putString("username", username);            neverRemember.getData().putString("password", password);            neverRemember.obj = resumeMsg;            new AlertDialog.Builder(getContext())                    .setTitle(com.android.internal.R.string.save_password_label)                    .setMessage(com.android.internal.R.string.save_password_message)                    .setPositiveButton(com.android.internal.R.string.save_password_notnow,                    new DialogInterface.OnClickListener() {                        public void onClick(DialogInterface dialog, int which) {                            resumeMsg.sendToTarget();                        }                    })                    .setNeutralButton(com.android.internal.R.string.save_password_remember,                    new DialogInterface.OnClickListener() {                        public void onClick(DialogInterface dialog, int which) {                            remember.sendToTarget();                        }                    })                    .setNegativeButton(com.android.internal.R.string.save_password_never,                    new DialogInterface.OnClickListener() {                        public void onClick(DialogInterface dialog, int which) {                            neverRemember.sendToTarget();                        }                    })                    .setOnCancelListener(new OnCancelListener() {                        public void onCancel(DialogInterface dialog) {                            resumeMsg.sendToTarget();                        }                    }).show();            // Return true so that WebViewCore will pause while the dialog is            // up.            rVal = true;        }       return rVal;    }    @Override    public void setScrollBarStyle(int style) {        if (style == View.SCROLLBARS_INSIDE_INSET                || style == View.SCROLLBARS_OUTSIDE_INSET) {            mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false;        } else {            mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true;        }        super.setScrollBarStyle(style);    }    /***     * Specify whether the horizontal scrollbar has overlay style.     * @param overlay TRUE if horizontal scrollbar should have overlay style.     */    public void setHorizontalScrollbarOverlay(boolean overlay) {        mOverlayHorizontalScrollbar = overlay;    }    /***     * Specify whether the vertical scrollbar has overlay style.     * @param overlay TRUE if vertical scrollbar should have overlay style.     */    public void setVerticalScrollbarOverlay(boolean overlay) {        mOverlayVerticalScrollbar = overlay;    }    /***     * Return whether horizontal scrollbar has overlay style     * @return TRUE if horizontal scrollbar has overlay style.     */    public boolean overlayHorizontalScrollbar() {        return mOverlayHorizontalScrollbar;    }    /***     * Return whether vertical scrollbar has overlay style     * @return TRUE if vertical scrollbar has overlay style.     */    public boolean overlayVerticalScrollbar() {        return mOverlayVerticalScrollbar;    }    /**     * Return the width of the view where the content of WebView should render     * to.     * Note: this can be called from WebCoreThread.     */    /** package */ int getViewWidth() {        if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) {            return getWidth();        } else {            return getWidth() - getVerticalScrollbarWidth();        }    }    /**     * returns the height of the titlebarview (if any). Does not care about     * scrolling     */    private int getTitleHeight() {        return mTitleBar != null ? mTitleBar.getHeight() : 0;    }    /**     * Return the amount of the titlebarview (if any) that is visible     */    private int getVisibleTitleHeight() {        return Math.max(getTitleHeight() - mScrollY, 0);    }    /**     * Return the height of the view where the content of WebView should render     * to.  Note that this excludes mTitleBar, if there is one.     * Note: this can be called from WebCoreThread.     */    /** package */ int getViewHeight() {        return getViewHeightWithTitle() - getVisibleTitleHeight();    }    private int getViewHeightWithTitle() {        int height = getHeight();        if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) {            height -= getHorizontalScrollbarHeight();        }        return height;    }    /***     * @return The SSL certificate for the main top-level page or null if     * there is no certificate (the site is not secure).     */    public SslCertificate getCertificate() {        return mCertificate;    }    /***     * Sets the SSL certificate for the main top-level page.     */    public void setCertificate(SslCertificate certificate) {        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "setCertificate=" + certificate);        }        // here, the certificate can be null (if the site is not secure)        mCertificate = certificate;    }    //-------------------------------------------------------------------------    // Methods called by activity    //-------------------------------------------------------------------------    /***     * Save the username and password for a particular host in the WebView's     * internal database.     * @param host The host that required the credentials.     * @param username The username for the given host.     * @param password The password for the given host.     */    public void savePassword(String host, String username, String password) {        mDatabase.setUsernamePassword(host, username, password);    }    /***     * Set the HTTP authentication credentials for a given host and realm.     *     * @param host The host for the credentials.     * @param realm The realm for the credentials.     * @param username The username for the password. If it is null, it means     *                 password can't be saved.     * @param password The password     */    public void setHttpAuthUsernamePassword(String host, String realm,            String username, String password) {        mDatabase.setHttpAuthUsernamePassword(host, realm, username, password);    }    /***     * Retrieve the HTTP authentication username and password for a given     * host & realm pair     *     * @param host The host for which the credentials apply.     * @param realm The realm for which the credentials apply.     * @return String[] if found, String[0] is username, which can be null and     *         String[1] is password. Return null if it can't find anything.     */    public String[] getHttpAuthUsernamePassword(String host, String realm) {        return mDatabase.getHttpAuthUsernamePassword(host, realm);    }    /***     * Destroy the internal state of the WebView. This method should be called     * after the WebView has been removed from the view system. No other     * methods may be called on a WebView after destroy.     */    public void destroy() {        clearTextEntry(false);        if (mWebViewCore != null) {            // Set the handlers to null before destroying WebViewCore so no            // more messages will be posted.            mCallbackProxy.setWebViewClient(null);            mCallbackProxy.setWebChromeClient(null);            // Tell WebViewCore to destroy itself            synchronized (this) {                WebViewCore webViewCore = mWebViewCore;                mWebViewCore = null; // prevent using partial webViewCore                webViewCore.destroy();            }            // Remove any pending messages that might not be serviced yet.            mPrivateHandler.removeCallbacksAndMessages(null);            mCallbackProxy.removeCallbacksAndMessages(null);            // Wake up the WebCore thread just in case it is waiting for a            // javascript dialog.            synchronized (mCallbackProxy) {                mCallbackProxy.notify();            }        }        if (mNativeClass != 0) {            nativeDestroy();            mNativeClass = 0;        }    }    /***     * Enables platform notifications of data state and proxy changes.     */    public static void enablePlatformNotifications() {        Network.enablePlatformNotifications();    }    /***     * If platform notifications are enabled, this should be called     * from the Activity's onPause() or onStop().     */    public static void disablePlatformNotifications() {        Network.disablePlatformNotifications();    }    /***     * Sets JavaScript engine flags.     *     * @param flags JS engine flags in a String     *     * @hide pending API solidification     */    public void setJsFlags(String flags) {        mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags);    }    /***     * Inform WebView of the network state. This is used to set     * the javascript property window.navigator.isOnline and     * generates the online/offline event as specified in HTML5, sec. 5.7.7     * @param networkUp boolean indicating if network is available     */    public void setNetworkAvailable(boolean networkUp) {        mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE,                networkUp ? 1 : 0, 0);    }    /***     * Inform WebView about the current network type.     * {@hide}     */    public void setNetworkType(String type, String subtype) {        Map<String, String> map = new HashMap<String, String>();        map.put("type", type);        map.put("subtype", subtype);        mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map);    }    /***     * Save the state of this WebView used in     * {@link android.app.Activity#onSaveInstanceState}. Please note that this     * method no longer stores the display data for this WebView. The previous     * behavior could potentially leak files if {@link #restoreState} was never     * called. See {@link #savePicture} and {@link #restorePicture} for saving     * and restoring the display data.     * @param outState The Bundle to store the WebView state.     * @return The same copy of the back/forward list used to save the state. If     *         saveState fails, the returned list will be null.     * @see #savePicture     * @see #restorePicture     */    public WebBackForwardList saveState(Bundle outState) {        if (outState == null) {            return null;        }        // We grab a copy of the back/forward list because a client of WebView        // may have invalidated the history list by calling clearHistory.        WebBackForwardList list = copyBackForwardList();        final int currentIndex = list.getCurrentIndex();        final int size = list.getSize();        // We should fail saving the state if the list is empty or the index is        // not in a valid range.        if (currentIndex < 0 || currentIndex >= size || size == 0) {            return null;        }        outState.putInt("index", currentIndex);        // FIXME: This should just be a byte[][] instead of ArrayList but        // Parcel.java does not have the code to handle multi-dimensional        // arrays.        ArrayList<byte[]> history = new ArrayList<byte[]>(size);        for (int i = 0; i < size; i++) {            WebHistoryItem item = list.getItemAtIndex(i);            if (null == item) {                // FIXME: this shouldn't happen                // need to determine how item got set to null                Log.w(LOGTAG, "saveState: Unexpected null history item.");                return null;            }            byte[] data = item.getFlattenedData();            if (data == null) {                // It would be very odd to not have any data for a given history                // item. And we will fail to rebuild the history list without                // flattened data.                return null;            }            history.add(data);        }        outState.putSerializable("history", history);        if (mCertificate != null) {            outState.putBundle("certificate",                               SslCertificate.saveState(mCertificate));        }        return list;    }    /***     * Save the current display data to the Bundle given. Used in conjunction     * with {@link #saveState}.     * @param b A Bundle to store the display data.     * @param dest The file to store the serialized picture data. Will be     *             overwritten with this WebView's picture data.     * @return True if the picture was successfully saved.     */    public boolean savePicture(Bundle b, final File dest) {        if (dest == null || b == null) {            return false;        }        final Picture p = capturePicture();        // Use a temporary file while writing to ensure the destination file        // contains valid data.        final File temp = new File(dest.getPath() + ".writing");        new Thread(new Runnable() {            public void run() {                try {                    FileOutputStream out = new FileOutputStream(temp);                    p.writeToStream(out);                    out.close();                    // Writing the picture succeeded, rename the temporary file                    // to the destination.                    temp.renameTo(dest);                } catch (Exception e) {                    // too late to do anything about it.                } finally {                    temp.delete();                }            }        }).start();        // now update the bundle        b.putInt("scrollX", mScrollX);        b.putInt("scrollY", mScrollY);        b.putFloat("scale", mActualScale);        b.putFloat("textwrapScale", mTextWrapScale);        b.putBoolean("overview", mInZoomOverview);        return true;    }    private void restoreHistoryPictureFields(Picture p, Bundle b) {        int sx = b.getInt("scrollX", 0);        int sy = b.getInt("scrollY", 0);        float scale = b.getFloat("scale", 1.0f);        mDrawHistory = true;        mHistoryPicture = p;        mScrollX = sx;        mScrollY = sy;        mHistoryWidth = Math.round(p.getWidth() * scale);        mHistoryHeight = Math.round(p.getHeight() * scale);        // as getWidth() / getHeight() of the view are not available yet, set up        // mActualScale, so that when onSizeChanged() is called, the rest will        // be set correctly        mActualScale = scale;        mInvActualScale = 1 / scale;        mTextWrapScale = b.getFloat("textwrapScale", scale);        mInZoomOverview = b.getBoolean("overview");        invalidate();    }    /***     * Restore the display data that was save in {@link #savePicture}. Used in     * conjunction with {@link #restoreState}.     * @param b A Bundle containing the saved display data.     * @param src The file where the picture data was stored.     * @return True if the picture was successfully restored.     */    public boolean restorePicture(Bundle b, File src) {        if (src == null || b == null) {            return false;        }        if (!src.exists()) {            return false;        }        try {            final FileInputStream in = new FileInputStream(src);            final Bundle copy = new Bundle(b);            new Thread(new Runnable() {                public void run() {                    final Picture p = Picture.createFromStream(in);                    if (p != null) {                        // Post a runnable on the main thread to update the                        // history picture fields.                        mPrivateHandler.post(new Runnable() {                            public void run() {                                restoreHistoryPictureFields(p, copy);                            }                        });                    }                    try {                        in.close();                    } catch (Exception e) {                        // Nothing we can do now.                    }                }            }).start();        } catch (FileNotFoundException e){            e.printStackTrace();        }        return true;    }    /***     * Restore the state of this WebView from the given map used in     * {@link android.app.Activity#onRestoreInstanceState}. This method should     * be called to restore the state of the WebView before using the object. If     * it is called after the WebView has had a chance to build state (load     * pages, create a back/forward list, etc.) there may be undesirable     * side-effects. Please note that this method no longer restores the     * display data for this WebView. See {@link #savePicture} and {@link     * #restorePicture} for saving and restoring the display data.     * @param inState The incoming Bundle of state.     * @return The restored back/forward list or null if restoreState failed.     * @see #savePicture     * @see #restorePicture     */    public WebBackForwardList restoreState(Bundle inState) {        WebBackForwardList returnList = null;        if (inState == null) {            return returnList;        }        if (inState.containsKey("index") && inState.containsKey("history")) {            mCertificate = SslCertificate.restoreState(                inState.getBundle("certificate"));            final WebBackForwardList list = mCallbackProxy.getBackForwardList();            final int index = inState.getInt("index");            // We can't use a clone of the list because we need to modify the            // shared copy, so synchronize instead to prevent concurrent            // modifications.            synchronized (list) {                final List<byte[]> history =                        (List<byte[]>) inState.getSerializable("history");                final int size = history.size();                // Check the index bounds so we don't crash in native code while                // restoring the history index.                if (index < 0 || index >= size) {                    return null;                }                for (int i = 0; i < size; i++) {                    byte[] data = history.remove(0);                    if (data == null) {                        // If we somehow have null data, we cannot reconstruct                        // the item and thus our history list cannot be rebuilt.                        return null;                    }                    WebHistoryItem item = new WebHistoryItem(data);                    list.addHistoryItem(item);                }                // Grab the most recent copy to return to the caller.                returnList = copyBackForwardList();                // Update the copy to have the correct index.                returnList.setCurrentIndex(index);            }            // Remove all pending messages because we are restoring previous            // state.            mWebViewCore.removeMessages();            // Send a restore state message.            mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index);        }        return returnList;    }    /***     * Load the given url with the extra headers.     * @param url The url of the resource to load.     * @param extraHeaders The extra headers sent with this url. This should not     *            include the common headers like "user-agent". If it does, it     *            will be replaced by the intrinsic value of the WebView.     */    public void loadUrl(String url, Map<String, String> extraHeaders) {        switchOutDrawHistory();        WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData();        arg.mUrl = url;        arg.mExtraHeaders = extraHeaders;        mWebViewCore.sendMessage(EventHub.LOAD_URL, arg);        clearTextEntry(false);    }    /***     * Load the given url.     * @param url The url of the resource to load.     */    public void loadUrl(String url) {        if (url == null) {            return;        }        loadUrl(url, null);    }    /***     * Load the url with postData using "POST" method into the WebView. If url     * is not a network url, it will be loaded with {link     * {@link #loadUrl(String)} instead.     *     * @param url The url of the resource to load.     * @param postData The data will be passed to "POST" request.     */    public void postUrl(String url, byte[] postData) {        if (URLUtil.isNetworkUrl(url)) {            switchOutDrawHistory();            WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData();            arg.mUrl = url;            arg.mPostData = postData;            mWebViewCore.sendMessage(EventHub.POST_URL, arg);            clearTextEntry(false);        } else {            loadUrl(url);        }    }    /***     * Load the given data into the WebView. This will load the data into     * WebView using the data: scheme. Content loaded through this mechanism     * does not have the ability to load content from the network.     * @param data A String of data in the given encoding. The date must     * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25,     * %27, %3f respectively.     * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg     * @param encoding The encoding of the data. i.e. utf-8, base64     */    public void loadData(String data, String mimeType, String encoding) {        loadUrl("data:" + mimeType + ";" + encoding + "," + data);    }    /***     * Load the given data into the WebView, use the provided URL as the base     * URL for the content. The base URL is the URL that represents the page     * that is loaded through this interface. As such, it is used to resolve any     * relative URLs. The historyUrl is used for the history entry.     * <p>     * Note for post 1.0. Due to the change in the WebKit, the access to asset     * files through "file:///android_asset/" for the sub resources is more     * restricted. If you provide null or empty string as baseUrl, you won't be     * able to access asset files. If the baseUrl is anything other than     * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for     * sub resources.     *     * @param baseUrl Url to resolve relative paths with, if null defaults to     *            "about:blank"     * @param data A String of data in the given encoding.     * @param mimeType The MIMEType of the data. i.e. text/html. If null,     *            defaults to "text/html"     * @param encoding The encoding of the data. i.e. utf-8, us-ascii     * @param historyUrl URL to use as the history entry.  Can be null.     */    public void loadDataWithBaseURL(String baseUrl, String data,            String mimeType, String encoding, String historyUrl) {        if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) {            loadData(data, mimeType, encoding);            return;        }        switchOutDrawHistory();        WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData();        arg.mBaseUrl = baseUrl;        arg.mData = data;        arg.mMimeType = mimeType;        arg.mEncoding = encoding;        arg.mHistoryUrl = historyUrl;        mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg);        clearTextEntry(false);    }    /***     * Stop the current load.     */    public void stopLoading() {        // TODO: should we clear all the messages in the queue before sending        // STOP_LOADING?        switchOutDrawHistory();        mWebViewCore.sendMessage(EventHub.STOP_LOADING);    }    /***     * Reload the current url.     */    public void reload() {        clearTextEntry(false);        switchOutDrawHistory();        mWebViewCore.sendMessage(EventHub.RELOAD);    }    /***     * Return true if this WebView has a back history item.     * @return True iff this WebView has a back history item.     */    public boolean canGoBack() {        WebBackForwardList l = mCallbackProxy.getBackForwardList();        synchronized (l) {            if (l.getClearPending()) {                return false;            } else {                return l.getCurrentIndex() > 0;            }        }    }    /***     * Go back in the history of this WebView.     */    public void goBack() {        goBackOrForward(-1);    }    /***     * Return true if this WebView has a forward history item.     * @return True iff this Webview has a forward history item.     */    public boolean canGoForward() {        WebBackForwardList l = mCallbackProxy.getBackForwardList();        synchronized (l) {            if (l.getClearPending()) {                return false;            } else {                return l.getCurrentIndex() < l.getSize() - 1;            }        }    }    /***     * Go forward in the history of this WebView.     */    public void goForward() {        goBackOrForward(1);    }    /***     * Return true if the page can go back or forward the given     * number of steps.     * @param steps The negative or positive number of steps to move the     *              history.     */    public boolean canGoBackOrForward(int steps) {        WebBackForwardList l = mCallbackProxy.getBackForwardList();        synchronized (l) {            if (l.getClearPending()) {                return false;            } else {                int newIndex = l.getCurrentIndex() + steps;                return newIndex >= 0 && newIndex < l.getSize();            }        }    }    /***     * Go to the history item that is the number of steps away from     * the current item. Steps is negative if backward and positive     * if forward.     * @param steps The number of steps to take back or forward in the back     *              forward list.     */    public void goBackOrForward(int steps) {        goBackOrForward(steps, false);    }    private void goBackOrForward(int steps, boolean ignoreSnapshot) {        if (steps != 0) {            clearTextEntry(false);            mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps,                    ignoreSnapshot ? 1 : 0);        }    }    private boolean extendScroll(int y) {        int finalY = mScroller.getFinalY();        int newY = pinLocY(finalY + y);        if (newY == finalY) return false;        mScroller.setFinalY(newY);        mScroller.extendDuration(computeDuration(0, y));        return true;    }    /***     * Scroll the contents of the view up by half the view size     * @param top true to jump to the top of the page     * @return true if the page was scrolled     */    public boolean pageUp(boolean top) {        if (mNativeClass == 0) {            return false;        }        nativeClearCursor(); // start next trackball movement from page edge        if (top) {            // go to the top of the document            return pinScrollTo(mScrollX, 0, true, 0);        }        // Page up        int h = getHeight();        int y;        if (h > 2 * PAGE_SCROLL_OVERLAP) {            y = -h + PAGE_SCROLL_OVERLAP;        } else {            y = -h / 2;        }        mUserScroll = true;        return mScroller.isFinished() ? pinScrollBy(0, y, true, 0)                : extendScroll(y);    }    /***     * Scroll the contents of the view down by half the page size     * @param bottom true to jump to bottom of page     * @return true if the page was scrolled     */    public boolean pageDown(boolean bottom) {        if (mNativeClass == 0) {            return false;        }        nativeClearCursor(); // start next trackball movement from page edge        if (bottom) {            return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0);        }        // Page down.        int h = getHeight();        int y;        if (h > 2 * PAGE_SCROLL_OVERLAP) {            y = h - PAGE_SCROLL_OVERLAP;        } else {            y = h / 2;        }        mUserScroll = true;        return mScroller.isFinished() ? pinScrollBy(0, y, true, 0)                : extendScroll(y);    }    /***     * Clear the view so that onDraw() will draw nothing but white background,     * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY     */    public void clearView() {        mContentWidth = 0;        mContentHeight = 0;        mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT);    }    /***     * Return a new picture that captures the current display of the webview.     * This is a copy of the display, and will be unaffected if the webview     * later loads a different URL.     *     * @return a picture containing the current contents of the view. Note this     *         picture is of the entire document, and is not restricted to the     *         bounds of the view.     */    public Picture capturePicture() {        if (null == mWebViewCore) return null; // check for out of memory tab        return mWebViewCore.copyContentPicture();    }    /***     *  Return true if the browser is displaying a TextView for text input.     */    private boolean inEditingMode() {        return mWebTextView != null && mWebTextView.getParent() != null;    }    /***     * Remove the WebTextView.     * @param disableFocusController If true, send a message to webkit     *     disabling the focus controller, so the caret stops blinking.     */    private void clearTextEntry(boolean disableFocusController) {        if (inEditingMode()) {            mWebTextView.remove();            if (disableFocusController) {                setFocusControllerInactive();            }        }    }    /***     * Return the current scale of the WebView     * @return The current scale.     */    public float getScale() {        return mActualScale;    }    /***     * Set the initial scale for the WebView. 0 means default. If     * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the     * way. Otherwise it starts with 100%. If initial scale is greater than 0,     * WebView starts will this value as initial scale.     *     * @param scaleInPercent The initial scale in percent.     */    public void setInitialScale(int scaleInPercent) {        mInitialScaleInPercent = scaleInPercent;    }    /***     * Invoke the graphical zoom picker widget for this WebView. This will     * result in the zoom widget appearing on the screen to control the zoom     * level of this WebView.     */    public void invokeZoomPicker() {        if (!getSettings().supportZoom()) {            Log.w(LOGTAG, "This WebView doesn't support zoom.");            return;        }        clearTextEntry(false);        if (getSettings().getBuiltInZoomControls()) {            getZoomButtonsController().setVisible(true);        } else {            mPrivateHandler.removeCallbacks(mZoomControlRunnable);            mPrivateHandler.postDelayed(mZoomControlRunnable,                    ZOOM_CONTROLS_TIMEOUT);        }    }    /***     * Return a HitTestResult based on the current cursor node. If a HTML::a tag     * is found and the anchor has a non-javascript url, the HitTestResult type     * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the     * anchor does not have a url or if it is a javascript url, the type will     * be UNKNOWN_TYPE and the url has to be retrieved through     * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is     * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in     * the "extra" field. A type of     * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as     * a child node. If a phone number is found, the HitTestResult type is set     * to PHONE_TYPE and the phone number is set in the "extra" field of     * HitTestResult. If a map address is found, the HitTestResult type is set     * to GEO_TYPE and the address is set in the "extra" field of HitTestResult.     * If an email address is found, the HitTestResult type is set to EMAIL_TYPE     * and the email is set in the "extra" field of HitTestResult. Otherwise,     * HitTestResult type is set to UNKNOWN_TYPE.     */    public HitTestResult getHitTestResult() {        if (mNativeClass == 0) {            return null;        }        HitTestResult result = new HitTestResult();        if (nativeHasCursorNode()) {            if (nativeCursorIsTextInput()) {                result.setType(HitTestResult.EDIT_TEXT_TYPE);            } else {                String text = nativeCursorText();                if (text != null) {                    if (text.startsWith(SCHEME_TEL)) {                        result.setType(HitTestResult.PHONE_TYPE);                        result.setExtra(text.substring(SCHEME_TEL.length()));                    } else if (text.startsWith(SCHEME_MAILTO)) {                        result.setType(HitTestResult.EMAIL_TYPE);                        result.setExtra(text.substring(SCHEME_MAILTO.length()));                    } else if (text.startsWith(SCHEME_GEO)) {                        result.setType(HitTestResult.GEO_TYPE);                        result.setExtra(URLDecoder.decode(text                                .substring(SCHEME_GEO.length())));                    } else if (nativeCursorIsAnchor()) {                        result.setType(HitTestResult.SRC_ANCHOR_TYPE);                        result.setExtra(text);                    }                }            }        }        int type = result.getType();        if (type == HitTestResult.UNKNOWN_TYPE                || type == HitTestResult.SRC_ANCHOR_TYPE) {            // Now check to see if it is an image.            int contentX = viewToContentX((int) mLastTouchX + mScrollX);            int contentY = viewToContentY((int) mLastTouchY + mScrollY);            String text = nativeImageURI(contentX, contentY);            if (text != null) {                result.setType(type == HitTestResult.UNKNOWN_TYPE ?                        HitTestResult.IMAGE_TYPE :                        HitTestResult.SRC_IMAGE_ANCHOR_TYPE);                result.setExtra(text);            }        }        return result;    }    // Called by JNI when the DOM has changed the focus.  Clear the focus so    // that new keys will go to the newly focused field    private void domChangedFocus() {        if (inEditingMode()) {            mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget();        }    }    /***     * Request the href of an anchor element due to getFocusNodePath returning     * "href." If hrefMsg is null, this method returns immediately and does not     * dispatch hrefMsg to its target.     *     * @param hrefMsg This message will be dispatched with the result of the     *            request as the data member with "url" as key. The result can     *            be null.     */    // FIXME: API change required to change the name of this function.  We now    // look at the cursor node, and not the focus node.  Also, what is    // getFocusNodePath?    public void requestFocusNodeHref(Message hrefMsg) {        if (hrefMsg == null || mNativeClass == 0) {            return;        }        if (nativeCursorIsAnchor()) {            mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF,                    nativeCursorFramePointer(), nativeCursorNodePointer(),                    hrefMsg);        }    }    /***     * Request the url of the image last touched by the user. msg will be sent     * to its target with a String representing the url as its object.     *     * @param msg This message will be dispatched with the result of the request     *            as the data member with "url" as key. The result can be null.     */    public void requestImageRef(Message msg) {        if (0 == mNativeClass) return; // client isn't initialized        int contentX = viewToContentX((int) mLastTouchX + mScrollX);        int contentY = viewToContentY((int) mLastTouchY + mScrollY);        String ref = nativeImageURI(contentX, contentY);        Bundle data = msg.getData();        data.putString("url", ref);        msg.setData(data);        msg.sendToTarget();    }    private static int pinLoc(int x, int viewMax, int docMax) {//        Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax);        if (docMax < viewMax) {   // the doc has room on the sides for "blank"            // pin the short document to the top/left of the screen            x = 0;//            Log.d(LOGTAG, "--- center " + x);        } else if (x < 0) {            x = 0;//            Log.d(LOGTAG, "--- zero");        } else if (x + viewMax > docMax) {            x = docMax - viewMax;//            Log.d(LOGTAG, "--- pin " + x);        }        return x;    }    // Expects x in view coordinates    private int pinLocX(int x) {        return pinLoc(x, getViewWidth(), computeHorizontalScrollRange());    }    // Expects y in view coordinates    private int pinLocY(int y) {        return pinLoc(y, getViewHeightWithTitle(),                      computeVerticalScrollRange() + getTitleHeight());    }    /***     * A title bar which is embedded in this WebView, and scrolls along with it     * vertically, but not horizontally.     */    private View mTitleBar;    /***     * Since we draw the title bar ourselves, we removed the shadow from the     * browser's activity.  We do want a shadow at the bottom of the title bar,     * or at the top of the screen if the title bar is not visible.  This     * drawable serves that purpose.     */    private Drawable mTitleShadow;    /***     * Add or remove a title bar to be embedded into the WebView, and scroll     * along with it vertically, while remaining in view horizontally. Pass     * null to remove the title bar from the WebView, and return to drawing     * the WebView normally without translating to account for the title bar.     * @hide     */    public void setEmbeddedTitleBar(View v) {        if (mTitleBar == v) return;        if (mTitleBar != null) {            removeView(mTitleBar);        }        if (null != v) {            addView(v, new AbsoluteLayout.LayoutParams(                    ViewGroup.LayoutParams.MATCH_PARENT,                    ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0));            if (mTitleShadow == null) {                mTitleShadow = (Drawable) mContext.getResources().getDrawable(                        com.android.internal.R.drawable.title_bar_shadow);            }        }        mTitleBar = v;    }    /***     * Given a distance in view space, convert it to content space. Note: this     * does not reflect translation, just scaling, so this should not be called     * with coordinates, but should be called for dimensions like width or     * height.     */    private int viewToContentDimension(int d) {        return Math.round(d * mInvActualScale);    }    /***     * Given an x coordinate in view space, convert it to content space.  Also     * may be used for absolute heights (such as for the WebTextView's     * textSize, which is unaffected by the height of the title bar).     */    /**package*/ int viewToContentX(int x) {        return viewToContentDimension(x);    }    /***     * Given a y coordinate in view space, convert it to content space.     * Takes into account the height of the title bar if there is one     * embedded into the WebView.     */    /**package*/ int viewToContentY(int y) {        return viewToContentDimension(y - getTitleHeight());    }    /***     * Given a x coordinate in view space, convert it to content space.     * Returns the result as a float.     */    private float viewToContentXf(int x) {        return x * mInvActualScale;    }    /***     * Given a y coordinate in view space, convert it to content space.     * Takes into account the height of the title bar if there is one     * embedded into the WebView. Returns the result as a float.     */    private float viewToContentYf(int y) {        return (y - getTitleHeight()) * mInvActualScale;    }    /***     * Given a distance in content space, convert it to view space. Note: this     * does not reflect translation, just scaling, so this should not be called     * with coordinates, but should be called for dimensions like width or     * height.     */    /**package*/ int contentToViewDimension(int d) {        return Math.round(d * mActualScale);    }    /***     * Given an x coordinate in content space, convert it to view     * space.     */    /**package*/ int contentToViewX(int x) {        return contentToViewDimension(x);    }    /***     * Given a y coordinate in content space, convert it to view     * space.  Takes into account the height of the title bar.     */    /**package*/ int contentToViewY(int y) {        return contentToViewDimension(y) + getTitleHeight();    }    private Rect contentToViewRect(Rect x) {        return new Rect(contentToViewX(x.left), contentToViewY(x.top),                        contentToViewX(x.right), contentToViewY(x.bottom));    }    /**  To invalidate a rectangle in content coordinates, we need to transform        the rect into view coordinates, so we can then call invalidate(...).        Normally, we would just call contentToView[XY](...), which eventually        calls Math.round(coordinate * mActualScale). However, for invalidates,        we need to account for the slop that occurs with antialiasing. To        address that, we are a little more liberal in the size of the rect that        we invalidate.        This liberal calculation calls floor() for the top/left, and ceil() for        the bottom/right coordinates. This catches the possible extra pixels of        antialiasing that we might have missed with just round().     */    // Called by JNI to invalidate the View, given rectangle coordinates in    // content space    private void viewInvalidate(int l, int t, int r, int b) {        final float scale = mActualScale;        final int dy = getTitleHeight();        invalidate((int)Math.floor(l * scale),                   (int)Math.floor(t * scale) + dy,                   (int)Math.ceil(r * scale),                   (int)Math.ceil(b * scale) + dy);    }    // Called by JNI to invalidate the View after a delay, given rectangle    // coordinates in content space    private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) {        final float scale = mActualScale;        final int dy = getTitleHeight();        postInvalidateDelayed(delay,                              (int)Math.floor(l * scale),                              (int)Math.floor(t * scale) + dy,                              (int)Math.ceil(r * scale),                              (int)Math.ceil(b * scale) + dy);    }    private void invalidateContentRect(Rect r) {        viewInvalidate(r.left, r.top, r.right, r.bottom);    }    // stop the scroll animation, and don't let a subsequent fling add    // to the existing velocity    private void abortAnimation() {        mScroller.abortAnimation();        mLastVelocity = 0;    }    /** call from webcoreview.draw(), so we're still executing in the UI thread    */    private void recordNewContentSize(int w, int h, boolean updateLayout) {        // premature data from webkit, ignore        if ((w | h) == 0) {            return;        }        // don't abort a scroll animation if we didn't change anything        if (mContentWidth != w || mContentHeight != h) {            // record new dimensions            mContentWidth = w;            mContentHeight = h;            // If history Picture is drawn, don't update scroll. They will be            // updated when we get out of that mode.            if (!mDrawHistory) {                // repin our scroll, taking into account the new content size                int oldX = mScrollX;                int oldY = mScrollY;                mScrollX = pinLocX(mScrollX);                mScrollY = pinLocY(mScrollY);                if (oldX != mScrollX || oldY != mScrollY) {                    onScrollChanged(mScrollX, mScrollY, oldX, oldY);                }                if (!mScroller.isFinished()) {                    // We are in the middle of a scroll.  Repin the final scroll                    // position.                    mScroller.setFinalX(pinLocX(mScroller.getFinalX()));                    mScroller.setFinalY(pinLocY(mScroller.getFinalY()));                }            }        }        contentSizeChanged(updateLayout);    }    private void setNewZoomScale(float scale, boolean updateTextWrapScale,            boolean force) {        if (scale < mMinZoomScale) {            scale = mMinZoomScale;            // set mInZoomOverview for non mobile sites            if (scale < mDefaultScale) mInZoomOverview = true;        } else if (scale > mMaxZoomScale) {            scale = mMaxZoomScale;        }        if (updateTextWrapScale) {            mTextWrapScale = scale;            // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit            mLastHeightSent = 0;        }        if (scale != mActualScale || force) {            if (mDrawHistory) {                // If history Picture is drawn, don't update scroll. They will                // be updated when we get out of that mode.                if (scale != mActualScale && !mPreviewZoomOnly) {                    mCallbackProxy.onScaleChanged(mActualScale, scale);                }                mActualScale = scale;                mInvActualScale = 1 / scale;                sendViewSizeZoom();            } else {                // update our scroll so we don't appear to jump                // i.e. keep the center of the doc in the center of the view                int oldX = mScrollX;                int oldY = mScrollY;                float ratio = scale * mInvActualScale;   // old inverse                float sx = ratio * oldX + (ratio - 1) * mZoomCenterX;                float sy = ratio * oldY + (ratio - 1)                        * (mZoomCenterY - getTitleHeight());                // now update our new scale and inverse                if (scale != mActualScale && !mPreviewZoomOnly) {                    mCallbackProxy.onScaleChanged(mActualScale, scale);                }                mActualScale = scale;                mInvActualScale = 1 / scale;                // Scale all the child views                mViewManager.scaleAll();                // as we don't have animation for scaling, don't do animation                // for scrolling, as it causes weird intermediate state                //        pinScrollTo(Math.round(sx), Math.round(sy));                mScrollX = pinLocX(Math.round(sx));                mScrollY = pinLocY(Math.round(sy));                // update webkit                if (oldX != mScrollX || oldY != mScrollY) {                    onScrollChanged(mScrollX, mScrollY, oldX, oldY);                } else {                    // the scroll position is adjusted at the beginning of the                    // zoom animation. But we want to update the WebKit at the                    // end of the zoom animation. See comments in onScaleEnd().                    sendOurVisibleRect();                }                sendViewSizeZoom();            }        }    }    // Used to avoid sending many visible rect messages.    private Rect mLastVisibleRectSent;    private Rect mLastGlobalRect;    private Rect sendOurVisibleRect() {        if (mPreviewZoomOnly) return mLastVisibleRectSent;        Rect rect = new Rect();        calcOurContentVisibleRect(rect);        // Rect.equals() checks for null input.        if (!rect.equals(mLastVisibleRectSent)) {            Point pos = new Point(rect.left, rect.top);            mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET,                    nativeMoveGeneration(), 0, pos);            mLastVisibleRectSent = rect;        }        Rect globalRect = new Rect();        if (getGlobalVisibleRect(globalRect)                && !globalRect.equals(mLastGlobalRect)) {            if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + ","                        + globalRect.top + ",r=" + globalRect.right + ",b="                        + globalRect.bottom);            }            // TODO: the global offset is only used by windowRect()            // in ChromeClientAndroid ; other clients such as touch            // and mouse events could return view + screen relative points.            mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect);            mLastGlobalRect = globalRect;        }        return rect;    }    // Sets r to be the visible rectangle of our webview in view coordinates    private void calcOurVisibleRect(Rect r) {        Point p = new Point();        getGlobalVisibleRect(r, p);        r.offset(-p.x, -p.y);        if (mFindIsUp) {            r.bottom -= mFindHeight;        }    }    // Sets r to be our visible rectangle in content coordinates    private void calcOurContentVisibleRect(Rect r) {        calcOurVisibleRect(r);        // pin the rect to the bounds of the content        r.left = Math.max(viewToContentX(r.left), 0);        // viewToContentY will remove the total height of the title bar.  Add        // the visible height back in to account for the fact that if the title        // bar is partially visible, the part of the visible rect which is        // displaying our content is displaced by that amount.        r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0);        r.right = Math.min(viewToContentX(r.right), mContentWidth);        r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight);    }    // Sets r to be our visible rectangle in content coordinates. We use this    // method on the native side to compute the position of the fixed layers.    // Uses floating coordinates (necessary to correctly place elements when    // the scale factor is not 1)    private void calcOurContentVisibleRectF(RectF r) {        Rect ri = new Rect(0,0,0,0);        calcOurVisibleRect(ri);        // pin the rect to the bounds of the content        r.left = Math.max(viewToContentXf(ri.left), 0.0f);        // viewToContentY will remove the total height of the title bar.  Add        // the visible height back in to account for the fact that if the title        // bar is partially visible, the part of the visible rect which is        // displaying our content is displaced by that amount.        r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f);        r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth);        r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight);    }    static class ViewSizeData {        int mWidth;        int mHeight;        int mTextWrapWidth;        int mAnchorX;        int mAnchorY;        float mScale;        boolean mIgnoreHeight;    }    /***     * Compute unzoomed width and height, and if they differ from the last     * values we sent, send them to webkit (to be used has new viewport)     *     * @return true if new values were sent     */    private boolean sendViewSizeZoom() {        if (mPreviewZoomOnly) return false;        int viewWidth = getViewWidth();        int newWidth = Math.round(viewWidth * mInvActualScale);        int newHeight = Math.round(getViewHeight() * mInvActualScale);        /**         * Because the native side may have already done a layout before the         * View system was able to measure us, we have to send a height of 0 to         * remove excess whitespace when we grow our width. This will trigger a         * layout and a change in content size. This content size change will         * mean that contentSizeChanged will either call this method directly or         * indirectly from onSizeChanged.         */        if (newWidth > mLastWidthSent && mWrapContent) {            newHeight = 0;        }        // Avoid sending another message if the dimensions have not changed.        if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) {            ViewSizeData data = new ViewSizeData();            data.mWidth = newWidth;            data.mHeight = newHeight;            data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);;            data.mScale = mActualScale;            data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure;            data.mAnchorX = mAnchorX;            data.mAnchorY = mAnchorY;            mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data);            mLastWidthSent = newWidth;            mLastHeightSent = newHeight;            mAnchorX = mAnchorY = 0;            return true;        }        return false;    }    @Override    protected int computeHorizontalScrollRange() {        if (mDrawHistory) {            return mHistoryWidth;        } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF                && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) {            // only honor the scrollbar mode when it is at minimum zoom level            return computeHorizontalScrollExtent();        } else {            // to avoid rounding error caused unnecessary scrollbar, use floor            return (int) Math.floor(mContentWidth * mActualScale);        }    }    @Override    protected int computeVerticalScrollRange() {        if (mDrawHistory) {            return mHistoryHeight;        } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF                && (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) {            // only honor the scrollbar mode when it is at minimum zoom level            return computeVerticalScrollExtent();        } else {            // to avoid rounding error caused unnecessary scrollbar, use floor            return (int) Math.floor(mContentHeight * mActualScale);        }    }    @Override    protected int computeVerticalScrollOffset() {        return Math.max(mScrollY - getTitleHeight(), 0);    }    @Override    protected int computeVerticalScrollExtent() {        return getViewHeight();    }    /*** @hide */    @Override    protected void onDrawVerticalScrollBar(Canvas canvas,                                           Drawable scrollBar,                                           int l, int t, int r, int b) {        scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b);        scrollBar.draw(canvas);    }    /***     * Get the url for the current page. This is not always the same as the url     * passed to WebViewClient.onPageStarted because although the load for     * that url has begun, the current page may not have changed.     * @return The url for the current page.     */    public String getUrl() {        WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();        return h != null ? h.getUrl() : null;    }    /***     * Get the original url for the current page. This is not always the same     * as the url passed to WebViewClient.onPageStarted because although the     * load for that url has begun, the current page may not have changed.     * Also, there may have been redirects resulting in a different url to that     * originally requested.     * @return The url that was originally requested for the current page.     */    public String getOriginalUrl() {        WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();        return h != null ? h.getOriginalUrl() : null;    }    /***     * Get the title for the current page. This is the title of the current page     * until WebViewClient.onReceivedTitle is called.     * @return The title for the current page.     */    public String getTitle() {        WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();        return h != null ? h.getTitle() : null;    }    /***     * Get the favicon for the current page. This is the favicon of the current     * page until WebViewClient.onReceivedIcon is called.     * @return The favicon for the current page.     */    public Bitmap getFavicon() {        WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();        return h != null ? h.getFavicon() : null;    }    /***     * Get the touch icon url for the apple-touch-icon <link> element.     * @hide     */    public String getTouchIconUrl() {        WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();        return h != null ? h.getTouchIconUrl() : null;    }    /***     * Get the progress for the current page.     * @return The progress for the current page between 0 and 100.     */    public int getProgress() {        return mCallbackProxy.getProgress();    }    /***     * @return the height of the HTML content.     */    public int getContentHeight() {        return mContentHeight;    }    /***     * @return the width of the HTML content.     * @hide     */    public int getContentWidth() {        return mContentWidth;    }    /***     * Pause all layout, parsing, and javascript timers for all webviews. This     * is a global requests, not restricted to just this webview. This can be     * useful if the application has been paused.     */    public void pauseTimers() {        mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS);    }    /***     * Resume all layout, parsing, and javascript timers for all webviews.     * This will resume dispatching all timers.     */    public void resumeTimers() {        mWebViewCore.sendMessage(EventHub.RESUME_TIMERS);    }    /***     * Call this to pause any extra processing associated with this view and     * its associated DOM/plugins/javascript/etc. For example, if the view is     * taken offscreen, this could be called to reduce unnecessary CPU and/or     * network traffic. When the view is again "active", call onResume().     *     * Note that this differs from pauseTimers(), which affects all views/DOMs     * @hide     */    public void onPause() {        if (!mIsPaused) {            mIsPaused = true;            mWebViewCore.sendMessage(EventHub.ON_PAUSE);        }    }    /***     * Call this to balanace a previous call to onPause()     * @hide     */    public void onResume() {        if (mIsPaused) {            mIsPaused = false;            mWebViewCore.sendMessage(EventHub.ON_RESUME);        }    }    /***     * Returns true if the view is paused, meaning onPause() was called. Calling     * onResume() sets the paused state back to false.     * @hide     */    public boolean isPaused() {        return mIsPaused;    }    /***     * Call this to inform the view that memory is low so that it can     * free any available memory.     */    public void freeMemory() {        mWebViewCore.sendMessage(EventHub.FREE_MEMORY);    }    /***     * Clear the resource cache. Note that the cache is per-application, so     * this will clear the cache for all WebViews used.     *     * @param includeDiskFiles If false, only the RAM cache is cleared.     */    public void clearCache(boolean includeDiskFiles) {        // Note: this really needs to be a static method as it clears cache for all        // WebView. But we need mWebViewCore to send message to WebCore thread, so        // we can't make this static.        mWebViewCore.sendMessage(EventHub.CLEAR_CACHE,                includeDiskFiles ? 1 : 0, 0);    }    /***     * Make sure that clearing the form data removes the adapter from the     * currently focused textfield if there is one.     */    public void clearFormData() {        if (inEditingMode()) {            AutoCompleteAdapter adapter = null;            mWebTextView.setAdapterCustom(adapter);        }    }    /***     * Tell the WebView to clear its internal back/forward list.     */    public void clearHistory() {        mCallbackProxy.getBackForwardList().setClearPending();        mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY);    }    /***     * Clear the SSL preferences table stored in response to proceeding with SSL     * certificate errors.     */    public void clearSslPreferences() {        mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE);    }    /***     * Return the WebBackForwardList for this WebView. This contains the     * back/forward list for use in querying each item in the history stack.     * This is a copy of the private WebBackForwardList so it contains only a     * snapshot of the current state. Multiple calls to this method may return     * different objects. The object returned from this method will not be     * updated to reflect any new state.     */    public WebBackForwardList copyBackForwardList() {        return mCallbackProxy.getBackForwardList().clone();    }    /**     * Highlight and scroll to the next occurance of String in findAll.     * Wraps the page infinitely, and scrolls.  Must be called after     * calling findAll.     *     * @param forward Direction to search.     */    public void findNext(boolean forward) {        if (0 == mNativeClass) return; // client isn't initialized        nativeFindNext(forward);    }    /**     * Find all instances of find on the page and highlight them.     * @param find  String to find.     * @return int  The number of occurances of the String "find"     *              that were found.     */    public int findAll(String find) {        if (0 == mNativeClass) return 0; // client isn't initialized        int result = find != null ? nativeFindAll(find.toLowerCase(),                find.toUpperCase()) : 0;        invalidate();        mLastFind = find;        return result;    }    /***     * @hide     */    public void setFindIsUp(boolean isUp) {        mFindIsUp = isUp;        if (isUp) {            recordNewContentSize(mContentWidth, mContentHeight + mFindHeight,                    false);        }        if (0 == mNativeClass) return; // client isn't initialized        nativeSetFindIsUp(isUp);    }    // Used to know whether the find dialog is open.  Affects whether    // or not we draw the highlights for matches.    private boolean mFindIsUp;    private int mFindHeight;    // Keep track of the last string sent, so we can search again after an    // orientation change or the dismissal of the soft keyboard.    private String mLastFind;    /***     * Return the first substring consisting of the address of a physical     * location. Currently, only addresses in the United States are detected,     * and consist of:     * - a house number     * - a street name     * - a street type (Road, Circle, etc), either spelled out or abbreviated     * - a city name     * - a state or territory, either spelled out or two-letter abbr.     * - an optional 5 digit or 9 digit zip code.     *     * All names must be correctly capitalized, and the zip code, if present,     * must be valid for the state. The street type must be a standard USPS     * spelling or abbreviation. The state or territory must also be spelled     * or abbreviated using USPS standards. The house number may not exceed     * five digits.     * @param addr The string to search for addresses.     *     * @return the address, or if no address is found, return null.     */    public static String findAddress(String addr) {        return findAddress(addr, false);    }    /***     * @hide     * Return the first substring consisting of the address of a physical     * location. Currently, only addresses in the United States are detected,     * and consist of:     * - a house number     * - a street name     * - a street type (Road, Circle, etc), either spelled out or abbreviated     * - a city name     * - a state or territory, either spelled out or two-letter abbr.     * - an optional 5 digit or 9 digit zip code.     *     * Names are optionally capitalized, and the zip code, if present,     * must be valid for the state. The street type must be a standard USPS     * spelling or abbreviation. The state or territory must also be spelled     * or abbreviated using USPS standards. The house number may not exceed     * five digits.     * @param addr The string to search for addresses.     * @param caseInsensitive addr Set to true to make search ignore case.     *     * @return the address, or if no address is found, return null.     */    public static String findAddress(String addr, boolean caseInsensitive) {        return WebViewCore.nativeFindAddress(addr, caseInsensitive);    }    /**     * Clear the highlighting surrounding text matches created by findAll.     */    public void clearMatches() {        mLastFind = "";        if (mNativeClass == 0)            return;        nativeSetFindIsEmpty();        invalidate();    }    /***     * @hide     */    public void notifyFindDialogDismissed() {        if (mWebViewCore == null) {            return;        }        clearMatches();        setFindIsUp(false);        recordNewContentSize(mContentWidth, mContentHeight - mFindHeight,                false);        // Now that the dialog has been removed, ensure that we scroll to a        // location that is not beyond the end of the page.        pinScrollTo(mScrollX, mScrollY, false, 0);        invalidate();    }    /***     * @hide     */    public void setFindDialogHeight(int height) {        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "setFindDialogHeight height=" + height);        }        mFindHeight = height;    }    /***     * Query the document to see if it contains any image references. The     * message object will be dispatched with arg1 being set to 1 if images     * were found and 0 if the document does not reference any images.     * @param response The message that will be dispatched with the result.     */    public void documentHasImages(Message response) {        if (response == null) {            return;        }        mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response);    }    @Override    public void computeScroll() {        if (mScroller.computeScrollOffset()) {            int oldX = mScrollX;            int oldY = mScrollY;            mScrollX = mScroller.getCurrX();            mScrollY = mScroller.getCurrY();            postInvalidate();  // So we draw again            if (oldX != mScrollX || oldY != mScrollY) {                onScrollChanged(mScrollX, mScrollY, oldX, oldY);            }        } else {            super.computeScroll();        }    }    private static int computeDuration(int dx, int dy) {        int distance = Math.max(Math.abs(dx), Math.abs(dy));        int duration = distance * 1000 / STD_SPEED;        return Math.min(duration, MAX_DURATION);    }    // helper to pin the scrollBy parameters (already in view coordinates)    // returns true if the scroll was changed    private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) {        return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration);    }    // helper to pin the scrollTo parameters (already in view coordinates)    // returns true if the scroll was changed    private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) {        x = pinLocX(x);        y = pinLocY(y);        int dx = x - mScrollX;        int dy = y - mScrollY;        if ((dx | dy) == 0) {            return false;        }        if (animate) {            //        Log.d(LOGTAG, "startScroll: " + dx + " " + dy);            mScroller.startScroll(mScrollX, mScrollY, dx, dy,                    animationDuration > 0 ? animationDuration : computeDuration(dx, dy));            awakenScrollBars(mScroller.getDuration());            invalidate();        } else {            abortAnimation(); // just in case            scrollTo(x, y);        }        return true;    }    // Scale from content to view coordinates, and pin.    // Also called by jni webview.cpp    private boolean setContentScrollBy(int cx, int cy, boolean animate) {        if (mDrawHistory) {            // disallow WebView to change the scroll position as History Picture            // is used in the view system.            // TODO: as we switchOutDrawHistory when trackball or navigation            // keys are hit, this should be safe. Right?            return false;        }        cx = contentToViewDimension(cx);        cy = contentToViewDimension(cy);        if (mHeightCanMeasure) {            // move our visible rect according to scroll request            if (cy != 0) {                Rect tempRect = new Rect();                calcOurVisibleRect(tempRect);                tempRect.offset(cx, cy);                requestRectangleOnScreen(tempRect);            }            // FIXME: We scroll horizontally no matter what because currently            // ScrollView and ListView will not scroll horizontally.            // FIXME: Why do we only scroll horizontally if there is no            // vertical scroll?//                Log.d(LOGTAG, "setContentScrollBy cy=" + cy);            return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0);        } else {            return pinScrollBy(cx, cy, animate, 0);        }    }    /***     * Called by CallbackProxy when the page finishes loading.     * @param url The URL of the page which has finished loading.     */    /** package */ void onPageFinished(String url) {        if (mPageThatNeedsToSlideTitleBarOffScreen != null) {            // If the user is now on a different page, or has scrolled the page            // past the point where the title bar is offscreen, ignore the            // scroll request.            if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url)                    && mScrollX == 0 && mScrollY == 0) {                pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true,                        SLIDE_TITLE_DURATION);            }            mPageThatNeedsToSlideTitleBarOffScreen = null;        }    }    /***     * The URL of a page that sent a message to scroll the title bar off screen.     *     * Many mobile sites tell the page to scroll to (0,1) in order to scroll the     * title bar off the screen.  Sometimes, the scroll position is set before     * the page finishes loading.  Rather than scrolling while the page is still     * loading, keep track of the URL and new scroll position so we can perform     * the scroll once the page finishes loading.     */    private String mPageThatNeedsToSlideTitleBarOffScreen;    /***     * The destination Y scroll position to be used when the page finishes     * loading.  See mPageThatNeedsToSlideTitleBarOffScreen.     */    private int mYDistanceToSlideTitleOffScreen;    // scale from content to view coordinates, and pin    // return true if pin caused the final x/y different than the request cx/cy,    // and a future scroll may reach the request cx/cy after our size has    // changed    // return false if the view scroll to the exact position as it is requested,    // where negative numbers are taken to mean 0    private boolean setContentScrollTo(int cx, int cy) {        if (mDrawHistory) {            // disallow WebView to change the scroll position as History Picture            // is used in the view system.            // One known case where this is called is that WebCore tries to            // restore the scroll position. As history Picture already uses the            // saved scroll position, it is ok to skip this.            return false;        }        int vx;        int vy;        if ((cx | cy) == 0) {            // If the page is being scrolled to (0,0), do not add in the title            // bar's height, and simply scroll to (0,0). (The only other work            // in contentToView_ is to multiply, so this would not change 0.)            vx = 0;            vy = 0;        } else {            vx = contentToViewX(cx);            vy = contentToViewY(cy);        }//        Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" +//                      vx + " " + vy + "]");        // Some mobile sites attempt to scroll the title bar off the page by        // scrolling to (0,1).  If we are at the top left corner of the        // page, assume this is an attempt to scroll off the title bar, and        // animate the title bar off screen slowly enough that the user can see        // it.        if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0                && mTitleBar != null) {            // FIXME: 100 should be defined somewhere as our max progress.            if (getProgress() < 100) {                // Wait to scroll the title bar off screen until the page has                // finished loading.  Keep track of the URL and the destination                // Y position                mPageThatNeedsToSlideTitleBarOffScreen = getUrl();                mYDistanceToSlideTitleOffScreen = vy;            } else {                pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION);            }            // Since we are animating, we have not yet reached the desired            // scroll position.  Do not return true to request another attempt            return false;        }        pinScrollTo(vx, vy, false, 0);        // If the request was to scroll to a negative coordinate, treat it as if        // it was a request to scroll to 0        if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) {            return true;        } else {            return false;        }    }    // scale from content to view coordinates, and pin    private void spawnContentScrollTo(int cx, int cy) {        if (mDrawHistory) {            // disallow WebView to change the scroll position as History Picture            // is used in the view system.            return;        }        int vx = contentToViewX(cx);        int vy = contentToViewY(cy);        pinScrollTo(vx, vy, true, 0);    }    /***     * These are from webkit, and are in content coordinate system (unzoomed)     */    private void contentSizeChanged(boolean updateLayout) {        // suppress 0,0 since we usually see real dimensions soon after        // this avoids drawing the prev content in a funny place. If we find a        // way to consolidate these notifications, this check may become        // obsolete        if ((mContentWidth | mContentHeight) == 0) {            return;        }        if (mHeightCanMeasure) {            if (getMeasuredHeight() != contentToViewDimension(mContentHeight)                    || updateLayout) {                requestLayout();            }        } else if (mWidthCanMeasure) {            if (getMeasuredWidth() != contentToViewDimension(mContentWidth)                    || updateLayout) {                requestLayout();            }        } else {            // If we don't request a layout, try to send our view size to the            // native side to ensure that WebCore has the correct dimensions.            sendViewSizeZoom();        }    }    /***     * Set the WebViewClient that will receive various notifications and     * requests. This will replace the current handler.     * @param client An implementation of WebViewClient.     */    public void setWebViewClient(WebViewClient client) {        mCallbackProxy.setWebViewClient(client);    }    /***     * Gets the WebViewClient     * @return the current WebViewClient instance.     *     *@hide pending API council approval.     */    public WebViewClient getWebViewClient() {        return mCallbackProxy.getWebViewClient();    }    /***     * Register the interface to be used when content can not be handled by     * the rendering engine, and should be downloaded instead. This will replace     * the current handler.     * @param listener An implementation of DownloadListener.     */    public void setDownloadListener(DownloadListener listener) {        mCallbackProxy.setDownloadListener(listener);    }    /***     * Set the chrome handler. This is an implementation of WebChromeClient for     * use in handling Javascript dialogs, favicons, titles, and the progress.     * This will replace the current handler.     * @param client An implementation of WebChromeClient.     */    public void setWebChromeClient(WebChromeClient client) {        mCallbackProxy.setWebChromeClient(client);    }    /***     * Gets the chrome handler.     * @return the current WebChromeClient instance.     *     * @hide API council approval.     */    public WebChromeClient getWebChromeClient() {        return mCallbackProxy.getWebChromeClient();    }    /***     * Set the back/forward list client. This is an implementation of     * WebBackForwardListClient for handling new items and changes in the     * history index.     * @param client An implementation of WebBackForwardListClient.     * {@hide}     */    public void setWebBackForwardListClient(WebBackForwardListClient client) {        mCallbackProxy.setWebBackForwardListClient(client);    }    /***     * Gets the WebBackForwardListClient.     * {@hide}     */    public WebBackForwardListClient getWebBackForwardListClient() {        return mCallbackProxy.getWebBackForwardListClient();    }    /***     * Set the Picture listener. This is an interface used to receive     * notifications of a new Picture.     * @param listener An implementation of WebView.PictureListener.     */    public void setPictureListener(PictureListener listener) {        mPictureListener = listener;    }    /***     * {@hide}     */    /** FIXME: Debug only! Remove for SDK! */    public void externalRepresentation(Message callback) {        mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback);    }    /***     * {@hide}     */    /** FIXME: Debug only! Remove for SDK! */    public void documentAsText(Message callback) {        mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback);    }    /***     * Use this function to bind an object to Javascript so that the     * methods can be accessed from Javascript.     * <p><strong>IMPORTANT:</strong>     * <ul>     * <li> Using addJavascriptInterface() allows JavaScript to control your     * application. This can be a very useful feature or a dangerous security     * issue. When the HTML in the WebView is untrustworthy (for example, part     * or all of the HTML is provided by some person or process), then an     * attacker could inject HTML that will execute your code and possibly any     * code of the attacker's choosing.<br>     * Do not use addJavascriptInterface() unless all of the HTML in this     * WebView was written by you.</li>     * <li> The Java object that is bound runs in another thread and not in     * the thread that it was constructed in.</li>     * </ul></p>     * @param obj The class instance to bind to Javascript     * @param interfaceName The name to used to expose the class in Javascript     */    public void addJavascriptInterface(Object obj, String interfaceName) {        WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData();        arg.mObject = obj;        arg.mInterfaceName = interfaceName;        mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg);    }    /***     * Return the WebSettings object used to control the settings for this     * WebView.     * @return A WebSettings object that can be used to control this WebView's     *         settings.     */    public WebSettings getSettings() {        return mWebViewCore.getSettings();    }    /***     * Use this method to inform the webview about packages that are installed     * in the system. This information will be used by the     * navigator.isApplicationInstalled() API.     * @param packageNames is a set of package names that are known to be     * installed in the system.     *     * @hide not a public API     */    public void addPackageNames(Set<String> packageNames) {        mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames);    }    /***     * Use this method to inform the webview about single packages that are     * installed in the system. This information will be used by the     * navigator.isApplicationInstalled() API.     * @param packageName is the name of a package that is known to be     * installed in the system.     *     * @hide not a public API     */    public void addPackageName(String packageName) {        mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName);    }    /***     * Use this method to inform the webview about packages that are uninstalled     * in the system. This information will be used by the     * navigator.isApplicationInstalled() API.     * @param packageName is the name of a package that has been uninstalled in     * the system.     *     * @hide not a public API     */    public void removePackageName(String packageName) {        mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName);    }   /***    * Return the list of currently loaded plugins.    * @return The list of currently loaded plugins.    *    * @deprecated This was used for Gears, which has been deprecated.    */    @Deprecated    public static synchronized PluginList getPluginList() {        return new PluginList();    }   /***    * @deprecated This was used for Gears, which has been deprecated.    */    @Deprecated    public void refreshPlugins(boolean reloadOpenPages) { }    //-------------------------------------------------------------------------    // Override View methods    //-------------------------------------------------------------------------    @Override    protected void finalize() throws Throwable {        try {            destroy();        } finally {            super.finalize();        }    }    @Override    protected boolean drawChild(Canvas canvas, View child, long drawingTime) {        if (child == mTitleBar) {            // When drawing the title bar, move it horizontally to always show            // at the top of the WebView.            mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft());        }        return super.drawChild(canvas, child, drawingTime);    }    private void drawContent(Canvas canvas) {        // Update the buttons in the picture, so when we draw the picture        // to the screen, they are in the correct state.        // Tell the native side if user is a) touching the screen,        // b) pressing the trackball down, or c) pressing the enter key        // If the cursor is on a button, we need to draw it in the pressed        // state.        // If mNativeClass is 0, we should not reach here, so we do not        // need to check it again.        nativeRecordButtons(hasFocus() && hasWindowFocus(),                            mTouchMode == TOUCH_SHORTPRESS_START_MODE                            || mTrackballDown || mGotCenterDown, false);        drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing);    }    @Override    protected void onDraw(Canvas canvas) {        // if mNativeClass is 0, the WebView has been destroyed. Do nothing.        if (mNativeClass == 0) {            return;        }        // if both mContentWidth and mContentHeight are 0, it means there is no        // valid Picture passed to WebView yet. This can happen when WebView        // just starts. Draw the background and return.        if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) {            canvas.drawColor(mBackgroundColor);            return;        }        int saveCount = canvas.save();        if (mTitleBar != null) {            canvas.translate(0, (int) mTitleBar.getHeight());        }        if (mDragTrackerHandler == null) {            drawContent(canvas);        } else {            if (!mDragTrackerHandler.draw(canvas)) {                // sometimes the tracker doesn't draw, even though its active                drawContent(canvas);            }            if (mDragTrackerHandler.isFinished()) {                mDragTrackerHandler = null;            }        }        canvas.restoreToCount(saveCount);        // Now draw the shadow.        int titleH = getVisibleTitleHeight();        if (mTitleBar != null && titleH == 0) {            int height = (int) (5f * getContext().getResources()                    .getDisplayMetrics().density);            mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(),                    mScrollY + height);            mTitleShadow.draw(canvas);        }        if (AUTO_REDRAW_HACK && mAutoRedraw) {            invalidate();        }        mWebViewCore.signalRepaintDone();    }    @Override    public void setLayoutParams(ViewGroup.LayoutParams params) {        if (params.height == LayoutParams.WRAP_CONTENT) {            mWrapContent = true;        }        super.setLayoutParams(params);    }    @Override    public boolean performLongClick() {        // performLongClick() is the result of a delayed message. If we switch        // to windows overview, the WebView will be temporarily removed from the        // view system. In that case, do nothing.        if (getParent() == null) return false;        if (mNativeClass != 0 && nativeCursorIsTextInput()) {            // Send the click so that the textfield is in focus            centerKeyPressOnTextField();            rebuildWebTextView();        }        if (inEditingMode()) {            return mWebTextView.performLongClick();        } else {            return super.performLongClick();        }    }    boolean inAnimateZoom() {        return mZoomScale != 0;    }    /***     * Need to adjust the WebTextView after a change in zoom, since mActualScale     * has changed.  This is especially important for password fields, which are     * drawn by the WebTextView, since it conveys more information than what     * webkit draws.  Thus we need to reposition it to show in the correct     * place.     */    private boolean mNeedToAdjustWebTextView;    private boolean didUpdateTextViewBounds(boolean allowIntersect) {        Rect contentBounds = nativeFocusCandidateNodeBounds();        Rect vBox = contentToViewRect(contentBounds);        Rect visibleRect = new Rect();        calcOurVisibleRect(visibleRect);        // If the textfield is on screen, place the WebTextView in        // its new place, accounting for our new scroll/zoom values,        // and adjust its textsize.        if (allowIntersect ? Rect.intersects(visibleRect, vBox)                : visibleRect.contains(vBox)) {            mWebTextView.setRect(vBox.left, vBox.top, vBox.width(),                    vBox.height());            mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,                    contentToViewDimension(                    nativeFocusCandidateTextSize()));            return true;        } else {            // The textfield is now off screen.  The user probably            // was not zooming to see the textfield better.  Remove            // the WebTextView.  If the user types a key, and the            // textfield is still in focus, we will reconstruct            // the WebTextView and scroll it back on screen.            mWebTextView.remove();            return false;        }    }    private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) {        // If mNativeClass is 0, we should not reach here, so we do not        // need to check it again.        if (animationsRunning) {            canvas.setDrawFilter(mWebViewCore.mZoomFilter);        }        nativeDrawExtras(canvas, extras);        canvas.setDrawFilter(null);    }    private void drawCoreAndCursorRing(Canvas canvas, int color,        boolean drawCursorRing) {        if (mDrawHistory) {            canvas.scale(mActualScale, mActualScale);            canvas.drawPicture(mHistoryPicture);            return;        }        boolean animateZoom = mZoomScale != 0;        boolean animateScroll = ((!mScroller.isFinished()                || mVelocityTracker != null)                && (mTouchMode != TOUCH_DRAG_MODE ||                mHeldMotionless != MOTIONLESS_TRUE))                || mDeferTouchMode == TOUCH_DRAG_MODE;        if (mTouchMode == TOUCH_DRAG_MODE) {            if (mHeldMotionless == MOTIONLESS_PENDING) {                mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);                mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);                mHeldMotionless = MOTIONLESS_FALSE;            }            if (mHeldMotionless == MOTIONLESS_FALSE) {                mPrivateHandler.sendMessageDelayed(mPrivateHandler                        .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME);                mHeldMotionless = MOTIONLESS_PENDING;            }        }        if (animateZoom) {            float zoomScale;            int interval = (int) (SystemClock.uptimeMillis() - mZoomStart);            if (interval < ZOOM_ANIMATION_LENGTH) {                float ratio = (float) interval / ZOOM_ANIMATION_LENGTH;                zoomScale = 1.0f / (mInvInitialZoomScale                        + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio);                invalidate();            } else {                zoomScale = mZoomScale;                // set mZoomScale to be 0 as we have done animation                mZoomScale = 0;                WebViewCore.resumeUpdatePicture(mWebViewCore);                // call invalidate() again to draw with the final filters                invalidate();                if (mNeedToAdjustWebTextView) {                    mNeedToAdjustWebTextView = false;                    if (didUpdateTextViewBounds(false)                            && nativeFocusCandidateIsPassword()) {                        // If it is a password field, start drawing the                        // WebTextView once again.                        mWebTextView.setInPassword(true);                    }                }            }            // calculate the intermediate scroll position. As we need to use            // zoomScale, we can't use pinLocX/Y directly. Copy the logic here.            float scale = zoomScale * mInvInitialZoomScale;            int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX)                    - mZoomCenterX);            tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth                    * zoomScale)) + mScrollX;            int titleHeight = getTitleHeight();            int ty = Math.round(scale                    * (mInitialScrollY + mZoomCenterY - titleHeight)                    - (mZoomCenterY - titleHeight));            ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty                    - titleHeight, getViewHeight(), Math.round(mContentHeight                    * zoomScale)) + titleHeight) + mScrollY;            canvas.translate(tx, ty);            canvas.scale(zoomScale, zoomScale);            if (inEditingMode() && !mNeedToAdjustWebTextView                    && mZoomScale != 0) {                // The WebTextView is up.  Keep track of this so we can adjust                // its size and placement when we finish zooming                mNeedToAdjustWebTextView = true;                // If it is in password mode, turn it off so it does not draw                // misplaced.                if (nativeFocusCandidateIsPassword()) {                    mWebTextView.setInPassword(false);                }            }        } else {            canvas.scale(mActualScale, mActualScale);        }        boolean UIAnimationsRunning = false;        // Currently for each draw we compute the animation values;        // We may in the future decide to do that independently.        if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) {            UIAnimationsRunning = true;            // If we have unfinished (or unstarted) animations,            // we ask for a repaint.            invalidate();        }        mWebViewCore.drawContentPicture(canvas, color,                (animateZoom || mPreviewZoomOnly || UIAnimationsRunning),                animateScroll);        if (mNativeClass == 0) return;        // decide which adornments to draw        int extras = DRAW_EXTRAS_NONE;        if (mFindIsUp) {            // When the FindDialog is up, only draw the matches if we are not in            // the process of scrolling them into view.            if (!animateScroll) {                extras = DRAW_EXTRAS_FIND;            }        } else if (mShiftIsPressed && !nativeFocusIsPlugin()) {            if (!animateZoom && !mPreviewZoomOnly) {                extras = DRAW_EXTRAS_SELECTION;                nativeSetSelectionRegion(mTouchSelection || mExtendSelection);                nativeSetSelectionPointer(!mTouchSelection, mInvActualScale,                        mSelectX, mSelectY - getTitleHeight(),                        mExtendSelection);            }        } else if (drawCursorRing) {            extras = DRAW_EXTRAS_CURSOR_RING;        }        drawExtras(canvas, extras, UIAnimationsRunning);        if (extras == DRAW_EXTRAS_CURSOR_RING) {            if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) {                mTouchMode = TOUCH_SHORTPRESS_MODE;                HitTestResult hitTest = getHitTestResult();                if (hitTest == null                        || hitTest.mType == HitTestResult.UNKNOWN_TYPE) {                    mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);                }            }        }        if (mFocusSizeChanged) {            mFocusSizeChanged = false;            // If we are zooming, this will get handled above, when the zoom            // finishes.  We also do not need to do this unless the WebTextView            // is showing.            if (!animateZoom && inEditingMode()) {                didUpdateTextViewBounds(true);            }        }    }    // draw history    private boolean mDrawHistory = false;    private Picture mHistoryPicture = null;    private int mHistoryWidth = 0;    private int mHistoryHeight = 0;    // Only check the flag, can be called from WebCore thread    boolean drawHistory() {        return mDrawHistory;    }    // Should only be called in UI thread    void switchOutDrawHistory() {        if (null == mWebViewCore) return; // CallbackProxy may trigger this        if (mDrawHistory && mWebViewCore.pictureReady()) {            mDrawHistory = false;            mHistoryPicture = null;            invalidate();            int oldScrollX = mScrollX;            int oldScrollY = mScrollY;            mScrollX = pinLocX(mScrollX);            mScrollY = pinLocY(mScrollY);            if (oldScrollX != mScrollX || oldScrollY != mScrollY) {                mUserScroll = false;                mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX,                        oldScrollY);                onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY);            } else {                sendOurVisibleRect();            }        }    }    WebViewCore.CursorData cursorData() {        WebViewCore.CursorData result = new WebViewCore.CursorData();        result.mMoveGeneration = nativeMoveGeneration();        result.mFrame = nativeCursorFramePointer();        Point position = nativeCursorPosition();        result.mX = position.x;        result.mY = position.y;        return result;    }    /***     *  Delete text from start to end in the focused textfield. If there is no     *  focus, or if start == end, silently fail.  If start and end are out of     *  order, swap them.     *  @param  start   Beginning of selection to delete.     *  @param  end     End of selection to delete.     */    /** package */ void deleteSelection(int start, int end) {        mTextGeneration++;        WebViewCore.TextSelectionData data                = new WebViewCore.TextSelectionData(start, end);        mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0,                data);    }    /***     *  Set the selection to (start, end) in the focused textfield. If start and     *  end are out of order, swap them.     *  @param  start   Beginning of selection.     *  @param  end     End of selection.     */    /** package */ void setSelection(int start, int end) {        mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end);    }    @Override    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {      InputConnection connection = super.onCreateInputConnection(outAttrs);      outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN;      return connection;    }    /***     * Called in response to a message from webkit telling us that the soft     * keyboard should be launched.     */    private void displaySoftKeyboard(boolean isTextView) {        InputMethodManager imm = (InputMethodManager)                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);        // bring it back to the default scale so that user can enter text        boolean zoom = mActualScale < mDefaultScale;        if (zoom) {            mInZoomOverview = false;            mZoomCenterX = mLastTouchX;            mZoomCenterY = mLastTouchY;            // do not change text wrap scale so that there is no reflow            setNewZoomScale(mDefaultScale, false, false);        }        if (isTextView) {            rebuildWebTextView();            if (inEditingMode()) {                imm.showSoftInput(mWebTextView, 0);                if (zoom) {                    didUpdateTextViewBounds(true);                }                return;            }        }        // Used by plugins.        // Also used if the navigation cache is out of date, and        // does not recognize that a textfield is in focus.  In that        // case, use WebView as the targeted view.        // see http://b/issue?id=2457459        imm.showSoftInput(this, 0);    }    // Called by WebKit to instruct the UI to hide the keyboard    private void hideSoftKeyboard() {        InputMethodManager imm = (InputMethodManager)                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);        imm.hideSoftInputFromWindow(this.getWindowToken(), 0);    }    /**     * This method checks the current focus and cursor and potentially rebuilds     * mWebTextView to have the appropriate properties, such as password,     * multiline, and what text it contains.  It also removes it if necessary.     */    /** package */ void rebuildWebTextView() {        // If the WebView does not have focus, do nothing until it gains focus.        if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) {            return;        }        boolean alreadyThere = inEditingMode();        // inEditingMode can only return true if mWebTextView is non-null,        // so we can safely call remove() if (alreadyThere)        if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) {            if (alreadyThere) {                mWebTextView.remove();            }            return;        }        // At this point, we know we have found an input field, so go ahead        // and create the WebTextView if necessary.        if (mWebTextView == null) {            mWebTextView = new WebTextView(mContext, WebView.this);            // Initialize our generation number.            mTextGeneration = 0;        }        mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,                contentToViewDimension(nativeFocusCandidateTextSize()));        Rect visibleRect = new Rect();        calcOurContentVisibleRect(visibleRect);        // Note that sendOurVisibleRect calls viewToContent, so the coordinates        // should be in content coordinates.        Rect bounds = nativeFocusCandidateNodeBounds();        Rect vBox = contentToViewRect(bounds);        mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height());        if (!Rect.intersects(bounds, visibleRect)) {            mWebTextView.bringIntoView();        }        String text = nativeFocusCandidateText();        int nodePointer = nativeFocusCandidatePointer();        if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) {            // It is possible that we have the same textfield, but it has moved,            // i.e. In the case of opening/closing the screen.            // In that case, we need to set the dimensions, but not the other            // aspects.            // If the text has been changed by webkit, update it.  However, if            // there has been more UI text input, ignore it.  We will receive            // another update when that text is recognized.            if (text != null && !text.equals(mWebTextView.getText().toString())                    && nativeTextGeneration() == mTextGeneration) {                mWebTextView.setTextAndKeepSelection(text);            }        } else {            mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ?                    Gravity.RIGHT : Gravity.NO_GRAVITY);            // This needs to be called before setType, which may call            // requestFormData, and it needs to have the correct nodePointer.            mWebTextView.setNodePointer(nodePointer);            mWebTextView.setType(nativeFocusCandidateType());            if (null == text) {                if (DebugFlags.WEB_VIEW) {                    Log.v(LOGTAG, "rebuildWebTextView null == text");                }                text = "";            }            mWebTextView.setTextAndKeepSelection(text);            InputMethodManager imm = InputMethodManager.peekInstance();            if (imm != null && imm.isActive(mWebTextView)) {                imm.restartInput(mWebTextView);            }        }        mWebTextView.requestFocus();    }    /***     * Called by WebTextView to find saved form data associated with the     * textfield     * @param name Name of the textfield.     * @param nodePointer Pointer to the node of the textfield, so it can be     *          compared to the currently focused textfield when the data is     *          retrieved.     */    /** package */ void requestFormData(String name, int nodePointer) {        if (mWebViewCore.getSettings().getSaveFormData()) {            Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA);            update.arg1 = nodePointer;            RequestFormData updater = new RequestFormData(name, getUrl(),                    update);            Thread t = new Thread(updater);            t.start();        }    }    /***     * Pass a message to find out the <label> associated with the <input>     * identified by nodePointer     * @param framePointer Pointer to the frame containing the <input> node     * @param nodePointer Pointer to the node for which a <label> is desired.     */    /** package */ void requestLabel(int framePointer, int nodePointer) {        mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer,                nodePointer);    }    /**     * This class requests an Adapter for the WebTextView which shows past     * entries stored in the database.  It is a Runnable so that it can be done     * in its own thread, without slowing down the UI.     */    private class RequestFormData implements Runnable {        private String mName;        private String mUrl;        private Message mUpdateMessage;        public RequestFormData(String name, String url, Message msg) {            mName = name;            mUrl = url;            mUpdateMessage = msg;        }        public void run() {            ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName);            if (pastEntries.size() > 0) {                AutoCompleteAdapter adapter = new                        AutoCompleteAdapter(mContext, pastEntries);                mUpdateMessage.obj = adapter;                mUpdateMessage.sendToTarget();            }        }    }    /***     * Dump the display tree to "/sdcard/displayTree.txt"     *     * @hide debug only     */    public void dumpDisplayTree() {        nativeDumpDisplayTree(getUrl());    }    /***     * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to     * "/sdcard/domTree.txt"     *     * @hide debug only     */    public void dumpDomTree(boolean toFile) {        mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0);    }    /***     * Dump the render tree to adb shell if "toFile" is False, otherwise dump it     * to "/sdcard/renderTree.txt"     *     * @hide debug only     */    public void dumpRenderTree(boolean toFile) {        mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0);    }    /***     * Dump the V8 counters to standard output.     * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to     * true. Otherwise, this will do nothing.     *     * @hide debug only     */    public void dumpV8Counters() {        mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS);    }    // This is used to determine long press with the center key.  Does not    // affect long press with the trackball/touch.    private boolean mGotCenterDown = false;    @Override    public boolean onKeyDown(int keyCode, KeyEvent event) {        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis()                    + ", " + event + ", unicode=" + event.getUnicodeChar());        }        if (mNativeClass == 0) {            return false;        }        // do this hack up front, so it always works, regardless of touch-mode        if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) {            mAutoRedraw = !mAutoRedraw;            if (mAutoRedraw) {                invalidate();            }            return true;        }        // Bubble up the key event if        // 1. it is a system key; or        // 2. the host application wants to handle it;        if (event.isSystem()                || mCallbackProxy.uiOverrideKeyEvent(event)) {            return false;        }        if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT                || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {            if (nativeFocusIsPlugin()) {                mShiftIsPressed = true;            } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) {                setUpSelectXY();            }        }        if (keyCode >= KeyEvent.KEYCODE_DPAD_UP                && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) {            switchOutDrawHistory();            if (nativeFocusIsPlugin()) {                letPluginHandleNavKey(keyCode, event.getEventTime(), true);                return true;            }            if (mShiftIsPressed) {                int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT                    ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0;                int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ?                    -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0;                int multiplier = event.getRepeatCount() + 1;                moveSelection(xRate * multiplier, yRate * multiplier);                return true;            }            if (navHandledKey(keyCode, 1, false, event.getEventTime())) {                playSoundEffect(keyCodeToSoundsEffect(keyCode));                return true;            }            // Bubble up the key event as WebView doesn't handle it            return false;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {            switchOutDrawHistory();            if (event.getRepeatCount() == 0) {                if (mShiftIsPressed && !nativeFocusIsPlugin()) {                    return true; // discard press if copy in progress                }                mGotCenterDown = true;                mPrivateHandler.sendMessageDelayed(mPrivateHandler                        .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT);                // Already checked mNativeClass, so we do not need to check it                // again.                nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true);                return true;            }            // Bubble up the key event as WebView doesn't handle it            return false;        }        if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT                && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) {            // turn off copy select if a shift-key combo is pressed            mExtendSelection = mShiftIsPressed = false;            if (mTouchMode == TOUCH_SELECT_MODE) {                mTouchMode = TOUCH_INIT_MODE;            }        }        if (getSettings().getNavDump()) {            switch (keyCode) {                case KeyEvent.KEYCODE_4:                    dumpDisplayTree();                    break;                case KeyEvent.KEYCODE_5:                case KeyEvent.KEYCODE_6:                    dumpDomTree(keyCode == KeyEvent.KEYCODE_5);                    break;                case KeyEvent.KEYCODE_7:                case KeyEvent.KEYCODE_8:                    dumpRenderTree(keyCode == KeyEvent.KEYCODE_7);                    break;                case KeyEvent.KEYCODE_9:                    nativeInstrumentReport();                    return true;            }        }        if (nativeCursorIsTextInput()) {            // This message will put the node in focus, for the DOM's notion            // of focus, and make the focuscontroller active            mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(),                    nativeCursorNodePointer());            // This will bring up the WebTextView and put it in focus, for            // our view system's notion of focus            rebuildWebTextView();            // Now we need to pass the event to it            if (inEditingMode()) {                mWebTextView.setDefaultSelection();                return mWebTextView.dispatchKeyEvent(event);            }        } else if (nativeHasFocusNode()) {            // In this case, the cursor is not on a text input, but the focus            // might be.  Check it, and if so, hand over to the WebTextView.            rebuildWebTextView();            if (inEditingMode()) {                mWebTextView.setDefaultSelection();                return mWebTextView.dispatchKeyEvent(event);            }        }        // TODO: should we pass all the keys to DOM or check the meta tag        if (nativeCursorWantsKeyEvents() || true) {            // pass the key to DOM            mWebViewCore.sendMessage(EventHub.KEY_DOWN, event);            // return true as DOM handles the key            return true;        }        // Bubble up the key event as WebView doesn't handle it        return false;    }    @Override    public boolean onKeyUp(int keyCode, KeyEvent event) {        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis()                    + ", " + event + ", unicode=" + event.getUnicodeChar());        }        if (mNativeClass == 0) {            return false;        }        // special CALL handling when cursor node's href is "tel:XXX"        if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) {            String text = nativeCursorText();            if (!nativeCursorIsTextInput() && text != null                    && text.startsWith(SCHEME_TEL)) {                Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text));                getContext().startActivity(intent);                return true;            }        }        // Bubble up the key event if        // 1. it is a system key; or        // 2. the host application wants to handle it;        if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) {            return false;        }        if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT                || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {            if (nativeFocusIsPlugin()) {                mShiftIsPressed = false;            } else if (commitCopy()) {                return true;            }        }        if (keyCode >= KeyEvent.KEYCODE_DPAD_UP                && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) {            if (nativeFocusIsPlugin()) {                letPluginHandleNavKey(keyCode, event.getEventTime(), false);                return true;            }            // always handle the navigation keys in the UI thread            // Bubble up the key event as WebView doesn't handle it            return false;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {            // remove the long press message first            mPrivateHandler.removeMessages(LONG_PRESS_CENTER);            mGotCenterDown = false;            if (mShiftIsPressed && !nativeFocusIsPlugin()) {                if (mExtendSelection) {                    commitCopy();                } else {                    mExtendSelection = true;                    invalidate(); // draw the i-beam instead of the arrow                }                return true; // discard press if copy in progress            }            // perform the single click            Rect visibleRect = sendOurVisibleRect();            // Note that sendOurVisibleRect calls viewToContent, so the            // coordinates should be in content coordinates.            if (!nativeCursorIntersects(visibleRect)) {                return false;            }            WebViewCore.CursorData data = cursorData();            mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data);            playSoundEffect(SoundEffectConstants.CLICK);            if (nativeCursorIsTextInput()) {                rebuildWebTextView();                centerKeyPressOnTextField();                if (inEditingMode()) {                    mWebTextView.setDefaultSelection();                }                return true;            }            clearTextEntry(true);            nativeSetFollowedLink(true);            if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) {                mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame,                        nativeCursorNodePointer());            }            return true;        }        // TODO: should we pass all the keys to DOM or check the meta tag        if (nativeCursorWantsKeyEvents() || true) {            // pass the key to DOM            mWebViewCore.sendMessage(EventHub.KEY_UP, event);            // return true as DOM handles the key            return true;        }        // Bubble up the key event as WebView doesn't handle it        return false;    }    private void setUpSelectXY() {        mExtendSelection = false;        mShiftIsPressed = true;        if (nativeHasCursorNode()) {            Rect rect = nativeCursorNodeBounds();            mSelectX = contentToViewX(rect.left);            mSelectY = contentToViewY(rect.top);        } else if (mLastTouchY > getVisibleTitleHeight()) {            mSelectX = mScrollX + (int) mLastTouchX;            mSelectY = mScrollY + (int) mLastTouchY;        } else {            mSelectX = mScrollX + getViewWidth() / 2;            mSelectY = mScrollY + getViewHeightWithTitle() / 2;        }        nativeHideCursor();    }    /***     * Use this method to put the WebView into text selection mode.     * Do not rely on this functionality; it will be deprecated in the future.     */    public void emulateShiftHeld() {        if (0 == mNativeClass) return; // client isn't initialized        setUpSelectXY();    }    private boolean commitCopy() {        boolean copiedSomething = false;        if (mExtendSelection) {            String selection = nativeGetSelection();            if (selection != "") {                if (DebugFlags.WEB_VIEW) {                    Log.v(LOGTAG, "commitCopy \"" + selection + "\"");                }                Toast.makeText(mContext                        , com.android.internal.R.string.text_copied                        , Toast.LENGTH_SHORT).show();                copiedSomething = true;                try {                    IClipboard clip = IClipboard.Stub.asInterface(                            ServiceManager.getService("clipboard"));                            clip.setClipboardText(selection);                } catch (android.os.RemoteException e) {                    Log.e(LOGTAG, "Clipboard failed", e);                }            }            mExtendSelection = false;        }        mShiftIsPressed = false;        invalidate(); // remove selection region and pointer        if (mTouchMode == TOUCH_SELECT_MODE) {            mTouchMode = TOUCH_INIT_MODE;        }        return copiedSomething;    }    @Override    protected void onAttachedToWindow() {        super.onAttachedToWindow();        if (hasWindowFocus()) setActive(true);    }    @Override    protected void onDetachedFromWindow() {        clearTextEntry(false);        dismissZoomControl();        if (hasWindowFocus()) setActive(false);        super.onDetachedFromWindow();    }    /***     * @deprecated WebView no longer needs to implement     * ViewGroup.OnHierarchyChangeListener.  This method does nothing now.     */    @Deprecated    public void onChildViewAdded(View parent, View child) {}    /***     * @deprecated WebView no longer needs to implement     * ViewGroup.OnHierarchyChangeListener.  This method does nothing now.     */    @Deprecated    public void onChildViewRemoved(View p, View child) {}    /***     * @deprecated WebView should not have implemented     * ViewTreeObserver.OnGlobalFocusChangeListener.  This method     * does nothing now.     */    @Deprecated    public void onGlobalFocusChanged(View oldFocus, View newFocus) {    }    private void setActive(boolean active) {        if (active) {            if (hasFocus()) {                // If our window regained focus, and we have focus, then begin                // drawing the cursor ring                mDrawCursorRing = true;                if (mNativeClass != 0) {                    nativeRecordButtons(true, false, true);                    if (inEditingMode()) {                        mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0);                    }                }            } else {                // If our window gained focus, but we do not have it, do not                // draw the cursor ring.                mDrawCursorRing = false;                // We do not call nativeRecordButtons here because we assume                // that when we lost focus, or window focus, it got called with                // false for the first parameter            }        } else {            if (mWebViewCore != null && getSettings().getBuiltInZoomControls()                    && (mZoomButtonsController == null ||                            !mZoomButtonsController.isVisible())) {                /**                 * The zoom controls come in their own window, so our window                 * loses focus. Our policy is to not draw the cursor ring if                 * our window is not focused, but this is an exception since                 * the user can still navigate the web page with the zoom                 * controls showing.                 */                // If our window has lost focus, stop drawing the cursor ring                mDrawCursorRing = false;            }            mGotKeyDown = false;            mShiftIsPressed = false;            mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);            mTouchMode = TOUCH_DONE_MODE;            if (mNativeClass != 0) {                nativeRecordButtons(false, false, true);            }            setFocusControllerInactive();        }        invalidate();    }    // To avoid drawing the cursor ring, and remove the TextView when our window    // loses focus.    @Override    public void onWindowFocusChanged(boolean hasWindowFocus) {        setActive(hasWindowFocus);        if (hasWindowFocus) {            BrowserFrame.sJavaBridge.setActiveWebView(this);        } else {            BrowserFrame.sJavaBridge.removeActiveWebView(this);        }        super.onWindowFocusChanged(hasWindowFocus);    }    /**     * Pass a message to WebCore Thread, telling the WebCore::Page's     * FocusController to be  "inactive" so that it will     * not draw the blinking cursor.  It gets set to "active" to draw the cursor     * in WebViewCore.cpp, when the WebCore thread receives key events/clicks.     */    /** package */ void setFocusControllerInactive() {        // Do not need to also check whether mWebViewCore is null, because        // mNativeClass is only set if mWebViewCore is non null        if (mNativeClass == 0) return;        mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0);    }    @Override    protected void onFocusChanged(boolean focused, int direction,            Rect previouslyFocusedRect) {        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction);        }        if (focused) {            // When we regain focus, if we have window focus, resume drawing            // the cursor ring            if (hasWindowFocus()) {                mDrawCursorRing = true;                if (mNativeClass != 0) {                    nativeRecordButtons(true, false, true);                }            //} else {                // The WebView has gained focus while we do not have                // windowfocus.  When our window lost focus, we should have                // called nativeRecordButtons(false...)            }        } else {            // When we lost focus, unless focus went to the TextView (which is            // true if we are in editing mode), stop drawing the cursor ring.            if (!inEditingMode()) {                mDrawCursorRing = false;                if (mNativeClass != 0) {                    nativeRecordButtons(false, false, true);                }                setFocusControllerInactive();            }            mGotKeyDown = false;        }        super.onFocusChanged(focused, direction, previouslyFocusedRect);    }    /***     * @hide     */    @Override    protected boolean setFrame(int left, int top, int right, int bottom) {        boolean changed = super.setFrame(left, top, right, bottom);        if (!changed && mHeightCanMeasure) {            // When mHeightCanMeasure is true, we will set mLastHeightSent to 0            // in WebViewCore after we get the first layout. We do call            // requestLayout() when we get contentSizeChanged(). But the View            // system won't call onSizeChanged if the dimension is not changed.            // In this case, we need to call sendViewSizeZoom() explicitly to            // notify the WebKit about the new dimensions.            sendViewSizeZoom();        }        return changed;    }    private static class PostScale implements Runnable {        final WebView mWebView;        final boolean mUpdateTextWrap;        public PostScale(WebView webView, boolean updateTextWrap) {            mWebView = webView;            mUpdateTextWrap = updateTextWrap;        }        public void run() {            if (mWebView.mWebViewCore != null) {                // we always force, in case our height changed, in which case we                // still want to send the notification over to webkit.                mWebView.setNewZoomScale(mWebView.mActualScale,                        mUpdateTextWrap, true);                // update the zoom buttons as the scale can be changed                if (mWebView.getSettings().getBuiltInZoomControls()) {                    mWebView.updateZoomButtonsEnabled();                }            }        }    }    @Override    protected void onSizeChanged(int w, int h, int ow, int oh) {        super.onSizeChanged(w, h, ow, oh);        // Center zooming to the center of the screen.        if (mZoomScale == 0) { // unless we're already zooming            // To anchor at top left corner.            mZoomCenterX = 0;            mZoomCenterY = getVisibleTitleHeight();            mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);            mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);        }        // adjust the max viewport width depending on the view dimensions. This        // is to ensure the scaling is not going insane. So do not shrink it if        // the view size is temporarily smaller, e.g. when soft keyboard is up.        int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE);        if (newMaxViewportWidth > sMaxViewportWidth) {            sMaxViewportWidth = newMaxViewportWidth;        }        // update mMinZoomScale if the minimum zoom scale is not fixed        if (!mMinZoomScaleFixed) {            // when change from narrow screen to wide screen, the new viewWidth            // can be wider than the old content width. We limit the minimum            // scale to 1.0f. The proper minimum scale will be calculated when            // the new picture shows up.            mMinZoomScale = Math.min(1.0f, (float) getViewWidth()                    / (mDrawHistory ? mHistoryPicture.getWidth()                            : mZoomOverviewWidth));            if (mInitialScaleInPercent > 0) {                // limit the minZoomScale to the initialScale if it is set                float initialScale = mInitialScaleInPercent / 100.0f;                if (mMinZoomScale > initialScale) {                    mMinZoomScale = initialScale;                }            }        }        dismissZoomControl();        // onSizeChanged() is called during WebView layout. And any        // requestLayout() is blocked during layout. As setNewZoomScale() will        // call its child View to reposition itself through ViewManager's        // scaleAll(), we need to post a Runnable to ensure requestLayout().        // <b/>        // only update the text wrap scale if width changed.        post(new PostScale(this, w != ow));    }    @Override    protected void onScrollChanged(int l, int t, int oldl, int oldt) {        super.onScrollChanged(l, t, oldl, oldt);        sendOurVisibleRect();        // update WebKit if visible title bar height changed. The logic is same        // as getVisibleTitleHeight.        int titleHeight = getTitleHeight();        if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) {            sendViewSizeZoom();        }    }    @Override    public boolean dispatchKeyEvent(KeyEvent event) {        boolean dispatch = true;        // Textfields and plugins need to receive the shift up key even if        // another key was released while the shift key was held down.        if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) {            if (event.getAction() == KeyEvent.ACTION_DOWN) {                mGotKeyDown = true;            } else {                if (!mGotKeyDown) {                    /**                     * We got a key up for which we were not the recipient of                     * the original key down. Don't give it to the view.                     */                    dispatch = false;                }                mGotKeyDown = false;            }        }        if (dispatch) {            return super.dispatchKeyEvent(event);        } else {            // We didn't dispatch, so let something else handle the key            return false;        }    }    // Here are the snap align logic:    // 1. If it starts nearly horizontally or vertically, snap align;    // 2. If there is a dramitic direction change, let it go;    // 3. If there is a same direction back and forth, lock it.    // adjustable parameters    private int mMinLockSnapReverseDistance;    private static final float MAX_SLOPE_FOR_DIAG = 1.5f;    private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80;    private static int sign(float x) {        return x > 0 ? 1 : (x < 0 ? -1 : 0);    }    // if the page can scroll <= this value, we won't allow the drag tracker    // to have any effect.    private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4;    private class DragTrackerHandler {        private final DragTracker mProxy;        private final float mStartY, mStartX;        private final float mMinDY, mMinDX;        private final float mMaxDY, mMaxDX;        private float mCurrStretchY, mCurrStretchX;        private int mSX, mSY;        private Interpolator mInterp;        private float[] mXY = new float[2];        // inner (non-state) classes can't have enums :(        private static final int DRAGGING_STATE = 0;        private static final int ANIMATING_STATE = 1;        private static final int FINISHED_STATE = 2;        private int mState;        public DragTrackerHandler(float x, float y, DragTracker proxy) {            mProxy = proxy;            int docBottom = computeVerticalScrollRange() + getTitleHeight();            int viewTop = getScrollY();            int viewBottom = viewTop + getHeight();            mStartY = y;            mMinDY = -viewTop;            mMaxDY = docBottom - viewBottom;            if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {                Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y +                      " up/down= " + mMinDY + " " + mMaxDY);            }            int docRight = computeHorizontalScrollRange();            int viewLeft = getScrollX();            int viewRight = viewLeft + getWidth();            mStartX = x;            mMinDX = -viewLeft;            mMaxDX = docRight - viewRight;            mState = DRAGGING_STATE;            mProxy.onStartDrag(x, y);            // ensure we buildBitmap at least once            mSX = -99999;        }        private float computeStretch(float delta, float min, float max) {            float stretch = 0;            if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) {                if (delta < min) {                    stretch = delta - min;                } else if (delta > max) {                    stretch = delta - max;                }            }            return stretch;        }        public void dragTo(float x, float y) {            float sy = computeStretch(mStartY - y, mMinDY, mMaxDY);            float sx = computeStretch(mStartX - x, mMinDX, mMaxDX);            if ((mSnapScrollMode & SNAP_X) != 0) {                sy = 0;            } else if ((mSnapScrollMode & SNAP_Y) != 0) {                sx = 0;            }            if (mCurrStretchX != sx || mCurrStretchY != sy) {                mCurrStretchX = sx;                mCurrStretchY = sy;                if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {                    Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx +                          " " + sy);                }                if (mProxy.onStretchChange(sx, sy)) {                    invalidate();                }            }        }        public void stopDrag() {            final int DURATION = 200;            int now = (int)SystemClock.uptimeMillis();            mInterp = new Interpolator(2);            mXY[0] = mCurrStretchX;            mXY[1] = mCurrStretchY;         //   float[] blend = new float[] { 0.5f, 0, 0.75f, 1 };            float[] blend = new float[] { 0, 0.5f, 0.75f, 1 };            mInterp.setKeyFrame(0, now, mXY, blend);            float[] zerozero = new float[] { 0, 0 };            mInterp.setKeyFrame(1, now + DURATION, zerozero, null);            mState = ANIMATING_STATE;            if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {                Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation");            }        }        // Call this after each draw. If it ruturns null, the tracker is done        public boolean isFinished() {            return mState == FINISHED_STATE;        }        private int hiddenHeightOfTitleBar() {            return getTitleHeight() - getVisibleTitleHeight();        }        // need a way to know if 565 or 8888 is the right config for        // capturing the display and giving it to the drag proxy        private Bitmap.Config offscreenBitmapConfig() {            // hard code 565 for now            return Bitmap.Config.RGB_565;        }        /**  If the tracker draws, then this returns true, otherwise it will            return false, and draw nothing.         */        public boolean draw(Canvas canvas) {            if (mCurrStretchX != 0 || mCurrStretchY != 0) {                int sx = getScrollX();                int sy = getScrollY() - hiddenHeightOfTitleBar();                if (mSX != sx || mSY != sy) {                    buildBitmap(sx, sy);                    mSX = sx;                    mSY = sy;                }                if (mState == ANIMATING_STATE) {                    Interpolator.Result result = mInterp.timeToValues(mXY);                    if (result == Interpolator.Result.FREEZE_END) {                        mState = FINISHED_STATE;                        return false;                    } else {                        mProxy.onStretchChange(mXY[0], mXY[1]);                        invalidate();                        // fall through to the draw                    }                }                int count = canvas.save(Canvas.MATRIX_SAVE_FLAG);                canvas.translate(sx, sy);                mProxy.onDraw(canvas);                canvas.restoreToCount(count);                return true;            }            if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {                Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " +                      mCurrStretchX + " " + mCurrStretchY);            }            return false;        }        private void buildBitmap(int sx, int sy) {            int w = getWidth();            int h = getViewHeight();            Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig());            Canvas canvas = new Canvas(bm);            canvas.translate(-sx, -sy);            drawContent(canvas);            if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {                Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx +                      " " + sy + " " + w + " " + h);            }            mProxy.onBitmapChange(bm);        }    }    /*** @hide */    public static class DragTracker {        public void onStartDrag(float x, float y) {}        public boolean onStretchChange(float sx, float sy) {            // return true to have us inval the view            return false;        }        public void onStopDrag() {}        public void onBitmapChange(Bitmap bm) {}        public void onDraw(Canvas canvas) {}    }    /*** @hide */    public DragTracker getDragTracker() {        return mDragTracker;    }    /*** @hide */    public void setDragTracker(DragTracker tracker) {        mDragTracker = tracker;    }    private DragTracker mDragTracker;    private DragTrackerHandler mDragTrackerHandler;    private class ScaleDetectorListener implements            ScaleGestureDetector.OnScaleGestureListener {        public boolean onScaleBegin(ScaleGestureDetector detector) {            // cancel the single touch handling            cancelTouch();            dismissZoomControl();            // reset the zoom overview mode so that the page won't auto grow            mInZoomOverview = false;            // If it is in password mode, turn it off so it does not draw            // misplaced.            if (inEditingMode() && nativeFocusCandidateIsPassword()) {                mWebTextView.setInPassword(false);            }            mViewManager.startZoom();            return true;        }        public void onScaleEnd(ScaleGestureDetector detector) {            if (mPreviewZoomOnly) {                mPreviewZoomOnly = false;                mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);                mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);                // don't reflow when zoom in; when zoom out, do reflow if the                // new scale is almost minimum scale;                boolean reflowNow = (mActualScale - mMinZoomScale                        <= MINIMUM_SCALE_INCREMENT)                        || ((mActualScale <= 0.8 * mTextWrapScale));                // force zoom after mPreviewZoomOnly is set to false so that the                // new view size will be passed to the WebKit                setNewZoomScale(mActualScale, reflowNow, true);                // call invalidate() to draw without zoom filter                invalidate();            }            // adjust the edit text view if needed            if (inEditingMode() && didUpdateTextViewBounds(false)                    && nativeFocusCandidateIsPassword()) {                // If it is a password field, start drawing the                // WebTextView once again.                mWebTextView.setInPassword(true);            }            // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it            // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it            // may trigger the unwanted fling.            mTouchMode = TOUCH_PINCH_DRAG;            mConfirmMove = true;            startTouch(detector.getFocusX(), detector.getFocusY(),                    mLastTouchTime);            mViewManager.endZoom();        }        public boolean onScale(ScaleGestureDetector detector) {            float scale = (float) (Math.round(detector.getScaleFactor()                    * mActualScale * 100) / 100.0);            if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) {                mPreviewZoomOnly = true;                // limit the scale change per step                if (scale > mActualScale) {                    scale = Math.min(scale, mActualScale * 1.25f);                } else {                    scale = Math.max(scale, mActualScale * 0.8f);                }                mZoomCenterX = detector.getFocusX();                mZoomCenterY = detector.getFocusY();                setNewZoomScale(scale, false, false);                invalidate();                return true;            }            return false;        }    }    private boolean hitFocusedPlugin(int contentX, int contentY) {        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin());            Rect r = nativeFocusNodeBounds();            Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top                    + ", " + r.right + ", " + r.bottom + ")");        }        return nativeFocusIsPlugin()                && nativeFocusNodeBounds().contains(contentX, contentY);    }    private boolean shouldForwardTouchEvent() {        return mFullScreenHolder != null || (mForwardTouchEvents                && mTouchMode != TOUCH_SELECT_MODE                && mPreventDefault != PREVENT_DEFAULT_IGNORE);    }    private boolean inFullScreenMode() {        return mFullScreenHolder != null;    }    @Override    public boolean onTouchEvent(MotionEvent ev) {        if (mNativeClass == 0 || !isClickable() || !isLongClickable()) {            return false;        }        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode="                    + mTouchMode);        }        int action;        float x, y;        long eventTime = ev.getEventTime();        // FIXME: we may consider to give WebKit an option to handle multi-touch        // events later.        if (mSupportMultiTouch && ev.getPointerCount() > 1) {            if (mMinZoomScale < mMaxZoomScale) {                mScaleDetector.onTouchEvent(ev);                if (mScaleDetector.isInProgress()) {                    mLastTouchTime = eventTime;                    return true;                }                x = mScaleDetector.getFocusX();                y = mScaleDetector.getFocusY();                action = ev.getAction() & MotionEvent.ACTION_MASK;                if (action == MotionEvent.ACTION_POINTER_DOWN) {                    cancelTouch();                    action = MotionEvent.ACTION_DOWN;                } else if (action == MotionEvent.ACTION_POINTER_UP) {                    // set mLastTouchX/Y to the remaining point                    mLastTouchX = x;                    mLastTouchY = y;                } else if (action == MotionEvent.ACTION_MOVE) {                    // negative x or y indicate it is on the edge, skip it.                    if (x < 0 || y < 0) {                        return true;                    }                }            } else {                // if the page disallow zoom, skip multi-pointer action                return true;            }        } else {            action = ev.getAction();            x = ev.getX();            y = ev.getY();        }        // Due to the touch screen edge effect, a touch closer to the edge        // always snapped to the edge. As getViewWidth() can be different from        // getWidth() due to the scrollbar, adjusting the point to match        // getViewWidth(). Same applied to the height.        if (x > getViewWidth() - 1) {            x = getViewWidth() - 1;        }        if (y > getViewHeightWithTitle() - 1) {            y = getViewHeightWithTitle() - 1;        }        float fDeltaX = mLastTouchX - x;        float fDeltaY = mLastTouchY - y;        int deltaX = (int) fDeltaX;        int deltaY = (int) fDeltaY;        int contentX = viewToContentX((int) x + mScrollX);        int contentY = viewToContentY((int) y + mScrollY);        switch (action) {            case MotionEvent.ACTION_DOWN: {                mPreventDefault = PREVENT_DEFAULT_NO;                mConfirmMove = false;                if (!mScroller.isFinished()) {                    // stop the current scroll animation, but if this is                    // the start of a fling, allow it to add to the current                    // fling's velocity                    mScroller.abortAnimation();                    mTouchMode = TOUCH_DRAG_START_MODE;                    mConfirmMove = true;                    mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY);                } else if (!inFullScreenMode() && mShiftIsPressed) {                    mSelectX = mScrollX + (int) x;                    mSelectY = mScrollY + (int) y;                    mTouchMode = TOUCH_SELECT_MODE;                    if (DebugFlags.WEB_VIEW) {                        Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY);                    }                    nativeMoveSelection(contentX, contentY, false);                    mTouchSelection = mExtendSelection = true;                    invalidate(); // draw the i-beam instead of the arrow                } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) {                    mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP);                    if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) {                        mTouchMode = TOUCH_DOUBLE_TAP_MODE;                    } else {                        // commit the short press action for the previous tap                        doShortPress();                        mTouchMode = TOUCH_INIT_MODE;                        mDeferTouchProcess = (!inFullScreenMode()                                && mForwardTouchEvents) ? hitFocusedPlugin(                                contentX, contentY) : false;                    }                } else { // the normal case                    mPreviewZoomOnly = false;                    mTouchMode = TOUCH_INIT_MODE;                    mDeferTouchProcess = (!inFullScreenMode()                            && mForwardTouchEvents) ? hitFocusedPlugin(                            contentX, contentY) : false;                    mWebViewCore.sendMessage(                            EventHub.UPDATE_FRAME_CACHE_IF_LOADING);                    if (mLogEvent && eventTime - mLastTouchUpTime < 1000) {                        EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION,                                (eventTime - mLastTouchUpTime), eventTime);                    }                }                // Trigger the link                if (mTouchMode == TOUCH_INIT_MODE                        || mTouchMode == TOUCH_DOUBLE_TAP_MODE) {                    mPrivateHandler.sendEmptyMessageDelayed(                            SWITCH_TO_SHORTPRESS, TAP_TIMEOUT);                    mPrivateHandler.sendEmptyMessageDelayed(                            SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT);                    if (inFullScreenMode() || mDeferTouchProcess) {                        mPreventDefault = PREVENT_DEFAULT_YES;                    } else if (mForwardTouchEvents) {                        mPreventDefault = PREVENT_DEFAULT_MAYBE_YES;                    } else {                        mPreventDefault = PREVENT_DEFAULT_NO;                    }                    // pass the touch events from UI thread to WebCore thread                    if (shouldForwardTouchEvent()) {                        TouchEventData ted = new TouchEventData();                        ted.mAction = action;                        ted.mX = contentX;                        ted.mY = contentY;                        ted.mMetaState = ev.getMetaState();                        ted.mReprocess = mDeferTouchProcess;                        if (mDeferTouchProcess) {                            // still needs to set them for compute deltaX/Y                            mLastTouchX = x;                            mLastTouchY = y;                            ted.mViewX = x;                            ted.mViewY = y;                            mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                            break;                        }                        mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                        if (!inFullScreenMode()) {                            mPrivateHandler.sendMessageDelayed(mPrivateHandler                                    .obtainMessage(PREVENT_DEFAULT_TIMEOUT,                                            action, 0), TAP_TIMEOUT);                        }                    }                }                startTouch(x, y, eventTime);                break;            }            case MotionEvent.ACTION_MOVE: {                boolean firstMove = false;                if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY)                        >= mTouchSlopSquare) {                    mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);                    mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);                    mConfirmMove = true;                    firstMove = true;                    if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) {                        mTouchMode = TOUCH_INIT_MODE;                    }                }                // pass the touch events from UI thread to WebCore thread                if (shouldForwardTouchEvent() && mConfirmMove && (firstMove                        || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) {                    mLastSentTouchTime = eventTime;                    TouchEventData ted = new TouchEventData();                    ted.mAction = action;                    ted.mX = contentX;                    ted.mY = contentY;                    ted.mMetaState = ev.getMetaState();                    ted.mReprocess = mDeferTouchProcess;                    if (mDeferTouchProcess) {                        ted.mViewX = x;                        ted.mViewY = y;                        mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                        break;                    }                    mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                    if (firstMove && !inFullScreenMode()) {                        mPrivateHandler.sendMessageDelayed(mPrivateHandler                                .obtainMessage(PREVENT_DEFAULT_TIMEOUT,                                        action, 0), TAP_TIMEOUT);                    }                }                if (mTouchMode == TOUCH_DONE_MODE                        || mPreventDefault == PREVENT_DEFAULT_YES) {                    // no dragging during scroll zoom animation, or when prevent                    // default is yes                    break;                }                if (mVelocityTracker == null) {                    Log.e(LOGTAG, "Got null mVelocityTracker when "                            + "mPreventDefault = " + mPreventDefault                            + " mDeferTouchProcess = " + mDeferTouchProcess                            + " mTouchMode = " + mTouchMode);                }                mVelocityTracker.addMovement(ev);                if (mTouchMode != TOUCH_DRAG_MODE) {                    if (mTouchMode == TOUCH_SELECT_MODE) {                        mSelectX = mScrollX + (int) x;                        mSelectY = mScrollY + (int) y;                        if (DebugFlags.WEB_VIEW) {                            Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY);                        }                        nativeMoveSelection(contentX, contentY, true);                        invalidate();                        break;                    }                    if (!mConfirmMove) {                        break;                    }                    if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES                            || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) {                        // track mLastTouchTime as we may need to do fling at                        // ACTION_UP                        mLastTouchTime = eventTime;                        break;                    }                    // if it starts nearly horizontal or vertical, enforce it                    int ax = Math.abs(deltaX);                    int ay = Math.abs(deltaY);                    if (ax > MAX_SLOPE_FOR_DIAG * ay) {                        mSnapScrollMode = SNAP_X;                        mSnapPositive = deltaX > 0;                    } else if (ay > MAX_SLOPE_FOR_DIAG * ax) {                        mSnapScrollMode = SNAP_Y;                        mSnapPositive = deltaY > 0;                    }                    mTouchMode = TOUCH_DRAG_MODE;                    mLastTouchX = x;                    mLastTouchY = y;                    fDeltaX = 0.0f;                    fDeltaY = 0.0f;                    deltaX = 0;                    deltaY = 0;                    startDrag();                }                if (mDragTrackerHandler != null) {                    mDragTrackerHandler.dragTo(x, y);                }                // do pan                int newScrollX = pinLocX(mScrollX + deltaX);                int newDeltaX = newScrollX - mScrollX;                if (deltaX != newDeltaX) {                    deltaX = newDeltaX;                    fDeltaX = (float) newDeltaX;                }                int newScrollY = pinLocY(mScrollY + deltaY);                int newDeltaY = newScrollY - mScrollY;                if (deltaY != newDeltaY) {                    deltaY = newDeltaY;                    fDeltaY = (float) newDeltaY;                }                boolean done = false;                boolean keepScrollBarsVisible = false;                if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) {                    mLastTouchX = x;                    mLastTouchY = y;                    keepScrollBarsVisible = done = true;                } else {                    if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) {                        int ax = Math.abs(deltaX);                        int ay = Math.abs(deltaY);                        if (mSnapScrollMode == SNAP_X) {                            // radical change means getting out of snap mode                            if (ay > MAX_SLOPE_FOR_DIAG * ax                                    && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) {                                mSnapScrollMode = SNAP_NONE;                            }                            // reverse direction means lock in the snap mode                            if (ax > MAX_SLOPE_FOR_DIAG * ay &&                                    (mSnapPositive                                    ? deltaX < -mMinLockSnapReverseDistance                                    : deltaX > mMinLockSnapReverseDistance)) {                                mSnapScrollMode |= SNAP_LOCK;                            }                        } else {                            // radical change means getting out of snap mode                            if (ax > MAX_SLOPE_FOR_DIAG * ay                                    && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) {                                mSnapScrollMode = SNAP_NONE;                            }                            // reverse direction means lock in the snap mode                            if (ay > MAX_SLOPE_FOR_DIAG * ax &&                                    (mSnapPositive                                    ? deltaY < -mMinLockSnapReverseDistance                                    : deltaY > mMinLockSnapReverseDistance)) {                                mSnapScrollMode |= SNAP_LOCK;                            }                        }                    }                    if (mSnapScrollMode != SNAP_NONE) {                        if ((mSnapScrollMode & SNAP_X) == SNAP_X) {                            deltaY = 0;                        } else {                            deltaX = 0;                        }                    }                    if ((deltaX | deltaY) != 0) {                        if (deltaX != 0) {                            mLastTouchX = x;                        }                        if (deltaY != 0) {                            mLastTouchY = y;                        }                        mHeldMotionless = MOTIONLESS_FALSE;                    } else {                        // keep the scrollbar on the screen even there is no                        // scroll                        mLastTouchX = x;                        mLastTouchY = y;                        keepScrollBarsVisible = true;                    }                    mLastTouchTime = eventTime;                    mUserScroll = true;                }                doDrag(deltaX, deltaY);                if (keepScrollBarsVisible) {                    if (mHeldMotionless != MOTIONLESS_TRUE) {                        mHeldMotionless = MOTIONLESS_TRUE;                        invalidate();                    }                    // keep the scrollbar on the screen even there is no scroll                    awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(),                            false);                    // return false to indicate that we can't pan out of the                    // view space                    return !done;                }                break;            }            case MotionEvent.ACTION_UP: {                // pass the touch events from UI thread to WebCore thread                if (shouldForwardTouchEvent()) {                    TouchEventData ted = new TouchEventData();                    ted.mAction = action;                    ted.mX = contentX;                    ted.mY = contentY;                    ted.mMetaState = ev.getMetaState();                    ted.mReprocess = mDeferTouchProcess;                    if (mDeferTouchProcess) {                        ted.mViewX = x;                        ted.mViewY = y;                    }                    mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                }                mLastTouchUpTime = eventTime;                switch (mTouchMode) {                    case TOUCH_DOUBLE_TAP_MODE: // double tap                        mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);                        mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);                        if (inFullScreenMode() || mDeferTouchProcess) {                            TouchEventData ted = new TouchEventData();                            ted.mAction = WebViewCore.ACTION_DOUBLETAP;                            ted.mX = contentX;                            ted.mY = contentY;                            ted.mMetaState = ev.getMetaState();                            ted.mReprocess = mDeferTouchProcess;                            if (mDeferTouchProcess) {                                ted.mViewX = x;                                ted.mViewY = y;                            }                            mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                        } else if (mPreventDefault != PREVENT_DEFAULT_YES){                            doDoubleTap();                            mTouchMode = TOUCH_DONE_MODE;                        }                        break;                    case TOUCH_SELECT_MODE:                        commitCopy();                        mTouchSelection = false;                        break;                    case TOUCH_INIT_MODE: // tap                    case TOUCH_SHORTPRESS_START_MODE:                    case TOUCH_SHORTPRESS_MODE:                        mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);                        mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);                        if (mConfirmMove) {                            Log.w(LOGTAG, "Miss a drag as we are waiting for" +                                    " WebCore's response for touch down.");                            if (mPreventDefault != PREVENT_DEFAULT_YES                                    && (computeMaxScrollX() > 0                                            || computeMaxScrollY() > 0)) {                                // UI takes control back, cancel WebCore touch                                cancelWebCoreTouchEvent(contentX, contentY,                                        true);                                // we will not rewrite drag code here, but we                                // will try fling if it applies.                                WebViewCore.reducePriority();                                // to get better performance, pause updating the                                // picture                                WebViewCore.pauseUpdatePicture(mWebViewCore);                                // fall through to TOUCH_DRAG_MODE                            } else {                                // WebKit may consume the touch event and modify                                // DOM. drawContentPicture() will be called with                                // animateSroll as true for better performance.                                // Force redraw in high-quality.                                invalidate();                                break;                            }                        } else {                            if (mTouchMode == TOUCH_INIT_MODE) {                                mPrivateHandler.sendEmptyMessageDelayed(                                        RELEASE_SINGLE_TAP, ViewConfiguration                                                .getDoubleTapTimeout());                            } else {                                doShortPress();                            }                            break;                        }                    case TOUCH_DRAG_MODE:                        mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);                        mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);                        // if the user waits a while w/o moving before the                        // up, we don't want to do a fling                        if (eventTime - mLastTouchTime <= MIN_FLING_TIME) {                            if (mVelocityTracker == null) {                                Log.e(LOGTAG, "Got null mVelocityTracker when "                                        + "mPreventDefault = "                                        + mPreventDefault                                        + " mDeferTouchProcess = "                                        + mDeferTouchProcess);                            }                            mVelocityTracker.addMovement(ev);                            // set to MOTIONLESS_IGNORE so that it won't keep                            // removing and sending message in                            // drawCoreAndCursorRing()                            mHeldMotionless = MOTIONLESS_IGNORE;                            doFling();                            break;                        }                        // redraw in high-quality, as we're done dragging                        mHeldMotionless = MOTIONLESS_TRUE;                        invalidate();                        // fall through                    case TOUCH_DRAG_START_MODE:                        // TOUCH_DRAG_START_MODE should not happen for the real                        // device as we almost certain will get a MOVE. But this                        // is possible on emulator.                        mLastVelocity = 0;                        WebViewCore.resumePriority();                        WebViewCore.resumeUpdatePicture(mWebViewCore);                        break;                }                stopTouch();                break;            }            case MotionEvent.ACTION_CANCEL: {                if (mTouchMode == TOUCH_DRAG_MODE) {                    invalidate();                }                cancelWebCoreTouchEvent(contentX, contentY, false);                cancelTouch();                break;            }        }        return true;    }    private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) {        if (shouldForwardTouchEvent()) {            if (removeEvents) {                mWebViewCore.removeMessages(EventHub.TOUCH_EVENT);            }            TouchEventData ted = new TouchEventData();            ted.mX = x;            ted.mY = y;            ted.mAction = MotionEvent.ACTION_CANCEL;            mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);            mPreventDefault = PREVENT_DEFAULT_IGNORE;        }    }    private void startTouch(float x, float y, long eventTime) {        // Remember where the motion event started        mLastTouchX = x;        mLastTouchY = y;        mLastTouchTime = eventTime;        mVelocityTracker = VelocityTracker.obtain();        mSnapScrollMode = SNAP_NONE;        if (mDragTracker != null) {            mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker);        }    }    private void startDrag() {        WebViewCore.reducePriority();        // to get better performance, pause updating the picture        WebViewCore.pauseUpdatePicture(mWebViewCore);        if (!mDragFromTextInput) {            nativeHideCursor();        }        WebSettings settings = getSettings();        if (settings.supportZoom()                && settings.getBuiltInZoomControls()                && !getZoomButtonsController().isVisible()                && mMinZoomScale < mMaxZoomScale                && (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF                        || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) {            mZoomButtonsController.setVisible(true);            int count = settings.getDoubleTapToastCount();            if (mInZoomOverview && count > 0) {                settings.setDoubleTapToastCount(--count);                Toast.makeText(mContext,                        com.android.internal.R.string.double_tap_toast,                        Toast.LENGTH_LONG).show();            }        }    }    private void doDrag(int deltaX, int deltaY) {        if ((deltaX | deltaY) != 0) {            scrollBy(deltaX, deltaY);        }        if (!getSettings().getBuiltInZoomControls()) {            boolean showPlusMinus = mMinZoomScale < mMaxZoomScale;            if (mZoomControls != null && showPlusMinus) {                if (mZoomControls.getVisibility() == View.VISIBLE) {                    mPrivateHandler.removeCallbacks(mZoomControlRunnable);                } else {                    mZoomControls.show(showPlusMinus, false);                }                mPrivateHandler.postDelayed(mZoomControlRunnable,                        ZOOM_CONTROLS_TIMEOUT);            }        }    }    private void stopTouch() {        if (mDragTrackerHandler != null) {            mDragTrackerHandler.stopDrag();        }        // we also use mVelocityTracker == null to tell us that we are        // not "moving around", so we can take the slower/prettier        // mode in the drawing code        if (mVelocityTracker != null) {            mVelocityTracker.recycle();            mVelocityTracker = null;        }    }    private void cancelTouch() {        if (mDragTrackerHandler != null) {            mDragTrackerHandler.stopDrag();        }        // we also use mVelocityTracker == null to tell us that we are        // not "moving around", so we can take the slower/prettier        // mode in the drawing code        if (mVelocityTracker != null) {            mVelocityTracker.recycle();            mVelocityTracker = null;        }        if (mTouchMode == TOUCH_DRAG_MODE) {            WebViewCore.resumePriority();            WebViewCore.resumeUpdatePicture(mWebViewCore);        }        mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);        mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);        mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);        mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);        mHeldMotionless = MOTIONLESS_TRUE;        mTouchMode = TOUCH_DONE_MODE;        nativeHideCursor();    }    private long mTrackballFirstTime = 0;    private long mTrackballLastTime = 0;    private float mTrackballRemainsX = 0.0f;    private float mTrackballRemainsY = 0.0f;    private int mTrackballXMove = 0;    private int mTrackballYMove = 0;    private boolean mExtendSelection = false;    private boolean mTouchSelection = false;    private static final int TRACKBALL_KEY_TIMEOUT = 1000;    private static final int TRACKBALL_TIMEOUT = 200;    private static final int TRACKBALL_WAIT = 100;    private static final int TRACKBALL_SCALE = 400;    private static final int TRACKBALL_SCROLL_COUNT = 5;    private static final int TRACKBALL_MOVE_COUNT = 10;    private static final int TRACKBALL_MULTIPLIER = 3;    private static final int SELECT_CURSOR_OFFSET = 16;    private int mSelectX = 0;    private int mSelectY = 0;    private boolean mFocusSizeChanged = false;    private boolean mShiftIsPressed = false;    private boolean mTrackballDown = false;    private long mTrackballUpTime = 0;    private long mLastCursorTime = 0;    private Rect mLastCursorBounds;    // Set by default; BrowserActivity clears to interpret trackball data    // directly for movement. Currently, the framework only passes    // arrow key events, not trackball events, from one child to the next    private boolean mMapTrackballToArrowKeys = true;    public void setMapTrackballToArrowKeys(boolean setMap) {        mMapTrackballToArrowKeys = setMap;    }    void resetTrackballTime() {        mTrackballLastTime = 0;    }    @Override    public boolean onTrackballEvent(MotionEvent ev) {        long time = ev.getEventTime();        if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) {            if (ev.getY() > 0) pageDown(true);            if (ev.getY() < 0) pageUp(true);            return true;        }        boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0                || !nativeFocusIsPlugin());        if (ev.getAction() == MotionEvent.ACTION_DOWN) {            if (shiftPressed) {                return true; // discard press if copy in progress            }            mTrackballDown = true;            if (mNativeClass == 0) {                return false;            }            nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true);            if (time - mLastCursorTime <= TRACKBALL_TIMEOUT                    && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) {                nativeSelectBestAt(mLastCursorBounds);            }            if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "onTrackballEvent down ev=" + ev                        + " time=" + time                        + " mLastCursorTime=" + mLastCursorTime);            }            if (isInTouchMode()) requestFocusFromTouch();            return false; // let common code in onKeyDown at it        }        if (ev.getAction() == MotionEvent.ACTION_UP) {            // LONG_PRESS_CENTER is set in common onKeyDown            mPrivateHandler.removeMessages(LONG_PRESS_CENTER);            mTrackballDown = false;            mTrackballUpTime = time;            if (shiftPressed) {                if (mExtendSelection) {                    commitCopy();                } else {                    mExtendSelection = true;                    invalidate(); // draw the i-beam instead of the arrow                }                return true; // discard press if copy in progress            }            if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "onTrackballEvent up ev=" + ev                        + " time=" + time                );            }            return false; // let common code in onKeyUp at it        }        if (mMapTrackballToArrowKeys && mShiftIsPressed == false) {            if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit");            return false;        }        if (mTrackballDown) {            if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit");            return true; // discard move if trackball is down        }        if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) {            if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit");            return true;        }        // TODO: alternatively we can do panning as touch does        switchOutDrawHistory();        if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) {            if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "onTrackballEvent time="                        + time + " last=" + mTrackballLastTime);            }            mTrackballFirstTime = time;            mTrackballXMove = mTrackballYMove = 0;        }        mTrackballLastTime = time;        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time);        }        mTrackballRemainsX += ev.getX();        mTrackballRemainsY += ev.getY();        doTrackball(time);        return true;    }    void moveSelection(float xRate, float yRate) {        if (mNativeClass == 0)            return;        int width = getViewWidth();        int height = getViewHeight();        mSelectX += xRate;        mSelectY += yRate;        int maxX = width + mScrollX;        int maxY = height + mScrollY;        mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET                , mSelectX));        mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET                , mSelectY));        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "moveSelection"                    + " mSelectX=" + mSelectX                    + " mSelectY=" + mSelectY                    + " mScrollX=" + mScrollX                    + " mScrollY=" + mScrollY                    + " xRate=" + xRate                    + " yRate=" + yRate                    );        }        nativeMoveSelection(viewToContentX(mSelectX),                viewToContentY(mSelectY), mExtendSelection);        int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET                : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET                : 0;        int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET                : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET                : 0;        pinScrollBy(scrollX, scrollY, true, 0);        Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1);        requestRectangleOnScreen(select);        invalidate();   }    private int scaleTrackballX(float xRate, int width) {        int xMove = (int) (xRate / TRACKBALL_SCALE * width);        int nextXMove = xMove;        if (xMove > 0) {            if (xMove > mTrackballXMove) {                xMove -= mTrackballXMove;            }        } else if (xMove < mTrackballXMove) {            xMove -= mTrackballXMove;        }        mTrackballXMove = nextXMove;        return xMove;    }    private int scaleTrackballY(float yRate, int height) {        int yMove = (int) (yRate / TRACKBALL_SCALE * height);        int nextYMove = yMove;        if (yMove > 0) {            if (yMove > mTrackballYMove) {                yMove -= mTrackballYMove;            }        } else if (yMove < mTrackballYMove) {            yMove -= mTrackballYMove;        }        mTrackballYMove = nextYMove;        return yMove;    }    private int keyCodeToSoundsEffect(int keyCode) {        switch(keyCode) {            case KeyEvent.KEYCODE_DPAD_UP:                return SoundEffectConstants.NAVIGATION_UP;            case KeyEvent.KEYCODE_DPAD_RIGHT:                return SoundEffectConstants.NAVIGATION_RIGHT;            case KeyEvent.KEYCODE_DPAD_DOWN:                return SoundEffectConstants.NAVIGATION_DOWN;            case KeyEvent.KEYCODE_DPAD_LEFT:                return SoundEffectConstants.NAVIGATION_LEFT;        }        throw new IllegalArgumentException("keyCode must be one of " +                "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " +                "KEYCODE_DPAD_LEFT}.");    }    private void doTrackball(long time) {        int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime);        if (elapsed == 0) {            elapsed = TRACKBALL_TIMEOUT;        }        float xRate = mTrackballRemainsX * 1000 / elapsed;        float yRate = mTrackballRemainsY * 1000 / elapsed;        int viewWidth = getViewWidth();        int viewHeight = getViewHeight();        if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) {            moveSelection(scaleTrackballX(xRate, viewWidth),                    scaleTrackballY(yRate, viewHeight));            mTrackballRemainsX = mTrackballRemainsY = 0;            return;        }        float ax = Math.abs(xRate);        float ay = Math.abs(yRate);        float maxA = Math.max(ax, ay);        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "doTrackball elapsed=" + elapsed                    + " xRate=" + xRate                    + " yRate=" + yRate                    + " mTrackballRemainsX=" + mTrackballRemainsX                    + " mTrackballRemainsY=" + mTrackballRemainsY);        }        int width = mContentWidth - viewWidth;        int height = mContentHeight - viewHeight;        if (width < 0) width = 0;        if (height < 0) height = 0;        ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER);        ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER);        maxA = Math.max(ax, ay);        int count = Math.max(0, (int) maxA);        int oldScrollX = mScrollX;        int oldScrollY = mScrollY;        if (count > 0) {            int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ?                    KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN :                    mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT :                    KeyEvent.KEYCODE_DPAD_RIGHT;            count = Math.min(count, TRACKBALL_MOVE_COUNT);            if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode                        + " count=" + count                        + " mTrackballRemainsX=" + mTrackballRemainsX                        + " mTrackballRemainsY=" + mTrackballRemainsY);            }            if (mNativeClass != 0 && nativeFocusIsPlugin()) {                for (int i = 0; i < count; i++) {                    letPluginHandleNavKey(selectKeyCode, time, true);                }                letPluginHandleNavKey(selectKeyCode, time, false);            } else if (navHandledKey(selectKeyCode, count, false, time)) {                playSoundEffect(keyCodeToSoundsEffect(selectKeyCode));            }            mTrackballRemainsX = mTrackballRemainsY = 0;        }        if (count >= TRACKBALL_SCROLL_COUNT) {            int xMove = scaleTrackballX(xRate, width);            int yMove = scaleTrackballY(yRate, height);            if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "doTrackball pinScrollBy"                        + " count=" + count                        + " xMove=" + xMove + " yMove=" + yMove                        + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX)                        + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY)                        );            }            if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) {                xMove = 0;            }            if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) {                yMove = 0;            }            if (xMove != 0 || yMove != 0) {                pinScrollBy(xMove, yMove, true, 0);            }            mUserScroll = true;        }    }    private int computeMaxScrollX() {        return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0);    }    private int computeMaxScrollY() {        return Math.max(computeVerticalScrollRange() + getTitleHeight()                - getViewHeightWithTitle(), 0);    }    public void flingScroll(int vx, int vy) {        mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0,                computeMaxScrollY());        invalidate();    }    private void doFling() {        if (mVelocityTracker == null) {            return;        }        int maxX = computeMaxScrollX();        int maxY = computeMaxScrollY();        mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling);        int vx = (int) mVelocityTracker.getXVelocity();        int vy = (int) mVelocityTracker.getYVelocity();        if (mSnapScrollMode != SNAP_NONE) {            if ((mSnapScrollMode & SNAP_X) == SNAP_X) {                vy = 0;            } else {                vx = 0;            }        }        if (true /** EMG release: make our fling more like Maps' */) {            // maps cuts their velocity in half            vx = vx * 3 / 4;            vy = vy * 3 / 4;        }        if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) {            WebViewCore.resumePriority();            WebViewCore.resumeUpdatePicture(mWebViewCore);            return;        }        float currentVelocity = mScroller.getCurrVelocity();        if (mLastVelocity > 0 && currentVelocity > 0) {            float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX)                    - Math.atan2(vy, vx)));            final float circle = (float) (Math.PI) * 2.0f;            if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) {                vx += currentVelocity * mLastVelX / mLastVelocity;                vy += currentVelocity * mLastVelY / mLastVelocity;                if (DebugFlags.WEB_VIEW) {                    Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy);                }            } else if (DebugFlags.WEB_VIEW) {                Log.v(LOGTAG, "doFling missed " + deltaR / circle);            }        } else if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "doFling start last=" + mLastVelocity                    + " current=" + currentVelocity                    + " vx=" + vx + " vy=" + vy                    + " maxX=" + maxX + " maxY=" + maxY                    + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY);        }        mLastVelX = vx;        mLastVelY = vy;        mLastVelocity = (float) Math.hypot(vx, vy);        mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY);        // TODO: duration is calculated based on velocity, if the range is        // small, the animation will stop before duration is up. We may        // want to calculate how long the animation is going to run to precisely        // resume the webcore update.        final int time = mScroller.getDuration();        mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time);        awakenScrollBars(time);        invalidate();    }    private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) {        float oldScale = mActualScale;        mInitialScrollX = mScrollX;        mInitialScrollY = mScrollY;        // snap to DEFAULT_SCALE if it is close        if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) {            scale = mDefaultScale;        }        setNewZoomScale(scale, updateTextWrapScale, false);        if (oldScale != mActualScale) {            // use mZoomPickerScale to see zoom preview first            mZoomStart = SystemClock.uptimeMillis();            mInvInitialZoomScale = 1.0f / oldScale;            mInvFinalZoomScale = 1.0f / mActualScale;            mZoomScale = mActualScale;            WebViewCore.pauseUpdatePicture(mWebViewCore);            invalidate();            return true;        } else {            return false;        }    }    /***     * Returns a view containing zoom controls i.e. +/- buttons. The caller is     * in charge of installing this view to the view hierarchy. This view will     * become visible when the user starts scrolling via touch and fade away if     * the user does not interact with it.     * <p/>     * API version 3 introduces a built-in zoom mechanism that is shown     * automatically by the MapView. This is the preferred approach for     * showing the zoom UI.     *     * @deprecated The built-in zoom mechanism is preferred, see     *             {@link WebSettings#setBuiltInZoomControls(boolean)}.     */    @Deprecated    public View getZoomControls() {        if (!getSettings().supportZoom()) {            Log.w(LOGTAG, "This WebView doesn't support zoom.");            return null;        }        if (mZoomControls == null) {            mZoomControls = createZoomControls();            /**             * need to be set to VISIBLE first so that getMeasuredHeight() in             * {@link #onSizeChanged()} can return the measured value for proper             * layout.             */            mZoomControls.setVisibility(View.VISIBLE);            mZoomControlRunnable = new Runnable() {                public void run() {                    /** Don't dismiss the controls if the user has                     * focus on them. Wait and check again later.                     */                    if (!mZoomControls.hasFocus()) {                        mZoomControls.hide();                    } else {                        mPrivateHandler.removeCallbacks(mZoomControlRunnable);                        mPrivateHandler.postDelayed(mZoomControlRunnable,                                ZOOM_CONTROLS_TIMEOUT);                    }                }            };        }        return mZoomControls;    }    private ExtendedZoomControls createZoomControls() {        ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext            , null);        zoomControls.setOnZoomInClickListener(new OnClickListener() {            public void onClick(View v) {                // reset time out                mPrivateHandler.removeCallbacks(mZoomControlRunnable);                mPrivateHandler.postDelayed(mZoomControlRunnable,                        ZOOM_CONTROLS_TIMEOUT);                zoomIn();            }        });        zoomControls.setOnZoomOutClickListener(new OnClickListener() {            public void onClick(View v) {                // reset time out                mPrivateHandler.removeCallbacks(mZoomControlRunnable);                mPrivateHandler.postDelayed(mZoomControlRunnable,                        ZOOM_CONTROLS_TIMEOUT);                zoomOut();            }        });        return zoomControls;    }    /***     * Gets the {@link ZoomButtonsController} which can be used to add     * additional buttons to the zoom controls window.     *     * @return The instance of {@link ZoomButtonsController} used by this class,     *         or null if it is unavailable.     * @hide     */    public ZoomButtonsController getZoomButtonsController() {        if (mZoomButtonsController == null) {            mZoomButtonsController = new ZoomButtonsController(this);            mZoomButtonsController.setOnZoomListener(mZoomListener);            // ZoomButtonsController positions the buttons at the bottom, but in            // the middle. Change their layout parameters so they appear on the            // right.            View controls = mZoomButtonsController.getZoomControls();            ViewGroup.LayoutParams params = controls.getLayoutParams();            if (params instanceof FrameLayout.LayoutParams) {                FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params;                frameParams.gravity = Gravity.RIGHT;            }        }        return mZoomButtonsController;    }    /***     * Perform zoom in in the webview     * @return TRUE if zoom in succeeds. FALSE if no zoom changes.     */    public boolean zoomIn() {        // TODO: alternatively we can disallow this during draw history mode        switchOutDrawHistory();        mInZoomOverview = false;        // Center zooming to the center of the screen.        mZoomCenterX = getViewWidth() * .5f;        mZoomCenterY = getViewHeight() * .5f;        mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);        mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);        return zoomWithPreview(mActualScale * 1.25f, true);    }    /***     * Perform zoom out in the webview     * @return TRUE if zoom out succeeds. FALSE if no zoom changes.     */    public boolean zoomOut() {        // TODO: alternatively we can disallow this during draw history mode        switchOutDrawHistory();        // Center zooming to the center of the screen.        mZoomCenterX = getViewWidth() * .5f;        mZoomCenterY = getViewHeight() * .5f;        mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);        mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);        return zoomWithPreview(mActualScale * 0.8f, true);    }    private void updateSelection() {        if (mNativeClass == 0) {            return;        }        // mLastTouchX and mLastTouchY are the point in the current viewport        int contentX = viewToContentX((int) mLastTouchX + mScrollX);        int contentY = viewToContentY((int) mLastTouchY + mScrollY);        Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop,                contentX + mNavSlop, contentY + mNavSlop);        nativeSelectBestAt(rect);    }    /***     * Scroll the focused text field/area to match the WebTextView     * @param xPercent New x position of the WebTextView from 0 to 1.     * @param y New y position of the WebTextView in view coordinates     */    /**package*/ void scrollFocusedTextInput(float xPercent, int y) {        if (!inEditingMode() || mWebViewCore == null) {            return;        }        mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT,                // Since this position is relative to the top of the text input                // field, we do not need to take the title bar's height into                // consideration.                viewToContentDimension(y),                new Float(xPercent));    }    /***     * Set our starting point and time for a drag from the WebTextView.     */    /**package*/ void initiateTextFieldDrag(float x, float y, long eventTime) {        if (!inEditingMode()) {            return;        }        mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX);        mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY);        mLastTouchTime = eventTime;        if (!mScroller.isFinished()) {            abortAnimation();            mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY);        }        mSnapScrollMode = SNAP_NONE;        mVelocityTracker = VelocityTracker.obtain();        mTouchMode = TOUCH_DRAG_START_MODE;    }    /***     * Given a motion event from the WebTextView, set its location to our     * coordinates, and handle the event.     */    /**package*/ boolean textFieldDrag(MotionEvent event) {        if (!inEditingMode()) {            return false;        }        mDragFromTextInput = true;        event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX),                (float) (mWebTextView.getTop() - mScrollY));        boolean result = onTouchEvent(event);        mDragFromTextInput = false;        return result;    }    /***     * Due a touch up from a WebTextView.  This will be handled by webkit to     * change the selection.     * @param event MotionEvent in the WebTextView's coordinates.     */    /**package*/ void touchUpOnTextField(MotionEvent event) {        if (!inEditingMode()) {            return;        }        int x = viewToContentX((int) event.getX() + mWebTextView.getLeft());        int y = viewToContentY((int) event.getY() + mWebTextView.getTop());        nativeMotionUp(x, y, mNavSlop);    }    /***     * Called when pressing the center key or trackball on a textfield.     */    /**package*/ void centerKeyPressOnTextField() {        mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(),                    nativeCursorNodePointer());    }    private void doShortPress() {        if (mNativeClass == 0) {            return;        }        if (mPreventDefault == PREVENT_DEFAULT_YES) {            return;        }        mTouchMode = TOUCH_DONE_MODE;        switchOutDrawHistory();        // mLastTouchX and mLastTouchY are the point in the current viewport        int contentX = viewToContentX((int) mLastTouchX + mScrollX);        int contentY = viewToContentY((int) mLastTouchY + mScrollY);        if (nativePointInNavCache(contentX, contentY, mNavSlop)) {            WebViewCore.MotionUpData motionUpData = new WebViewCore                    .MotionUpData();            motionUpData.mFrame = nativeCacheHitFramePointer();            motionUpData.mNode = nativeCacheHitNodePointer();            motionUpData.mBounds = nativeCacheHitNodeBounds();            motionUpData.mX = contentX;            motionUpData.mY = contentY;            mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS,                    motionUpData);        } else {            doMotionUp(contentX, contentY);        }    }    private void doMotionUp(int contentX, int contentY) {        if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) {            EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER);        }        if (nativeHasCursorNode() && !nativeCursorIsTextInput()) {            playSoundEffect(SoundEffectConstants.CLICK);        }    }    /**     * Return true if the view (Plugin) is fully visible and maximized inside     * the WebView.     */    private boolean isPluginFitOnScreen(ViewManager.ChildView view) {        int viewWidth = getViewWidth();        int viewHeight = getViewHeightWithTitle();        float scale = Math.min((float) viewWidth / view.width,                (float) viewHeight / view.height);        if (scale < mMinZoomScale) {            scale = mMinZoomScale;        } else if (scale > mMaxZoomScale) {            scale = mMaxZoomScale;        }        if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) {            if (contentToViewX(view.x) >= mScrollX                    && contentToViewX(view.x + view.width) <= mScrollX                            + viewWidth                    && contentToViewY(view.y) >= mScrollY                    && contentToViewY(view.y + view.height) <= mScrollY                            + viewHeight) {                return true;            }        }        return false;    }    /**     * Maximize and center the rectangle, specified in the document coordinate     * space, inside the WebView. If the zoom doesn't need to be changed, do an     * animated scroll to center it. If the zoom needs to be changed, find the     * zoom center and do a smooth zoom transition.     */    private void centerFitRect(int docX, int docY, int docWidth, int docHeight) {        int viewWidth = getViewWidth();        int viewHeight = getViewHeightWithTitle();        float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight                / docHeight);        if (scale < mMinZoomScale) {            scale = mMinZoomScale;        } else if (scale > mMaxZoomScale) {            scale = mMaxZoomScale;        }        if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) {            pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2,                    contentToViewY(docY + docHeight / 2) - viewHeight / 2,                    true, 0);        } else {            float oldScreenX = docX * mActualScale - mScrollX;            float rectViewX = docX * scale;            float rectViewWidth = docWidth * scale;            float newMaxWidth = mContentWidth * scale;            float newScreenX = (viewWidth - rectViewWidth) / 2;            // pin the newX to the WebView            if (newScreenX > rectViewX) {                newScreenX = rectViewX;            } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) {                newScreenX = viewWidth - (newMaxWidth - rectViewX);            }            mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale)                    / (scale - mActualScale);            float oldScreenY = docY * mActualScale + getTitleHeight()                    - mScrollY;            float rectViewY = docY * scale + getTitleHeight();            float rectViewHeight = docHeight * scale;            float newMaxHeight = mContentHeight * scale + getTitleHeight();            float newScreenY = (viewHeight - rectViewHeight) / 2;            // pin the newY to the WebView            if (newScreenY > rectViewY) {                newScreenY = rectViewY;            } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) {                newScreenY = viewHeight - (newMaxHeight - rectViewY);            }            mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale)                    / (scale - mActualScale);            zoomWithPreview(scale, false);        }    }    void dismissZoomControl() {        if (mWebViewCore == null) {            // maybe called after WebView's destroy(). As we can't get settings,            // just hide zoom control for both styles.            if (mZoomButtonsController != null) {                mZoomButtonsController.setVisible(false);            }            if (mZoomControls != null) {                mZoomControls.hide();            }            return;        }        WebSettings settings = getSettings();        if (settings.getBuiltInZoomControls()) {            if (mZoomButtonsController != null) {                mZoomButtonsController.setVisible(false);            }        } else {            if (mZoomControlRunnable != null) {                mPrivateHandler.removeCallbacks(mZoomControlRunnable);            }            if (mZoomControls != null) {                mZoomControls.hide();            }        }    }    // Rule for double tap:    // 1. if the current scale is not same as the text wrap scale and layout    //    algorithm is NARROW_COLUMNS, fit to column;    // 2. if the current state is not overview mode, change to overview mode;    // 3. if the current state is overview mode, change to default scale.    private void doDoubleTap() {        if (mWebViewCore.getSettings().getUseWideViewPort() == false) {            return;        }        mZoomCenterX = mLastTouchX;        mZoomCenterY = mLastTouchY;        mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);        mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);        WebSettings settings = getSettings();        settings.setDoubleTapToastCount(0);        // remove the zoom control after double tap        dismissZoomControl();        ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY);        if (plugin != null) {            if (isPluginFitOnScreen(plugin)) {                mInZoomOverview = true;                // Force the titlebar fully reveal in overview mode                if (mScrollY < getTitleHeight()) mScrollY = 0;                zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth,                        true);            } else {                mInZoomOverview = false;                centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height);            }            return;        }        boolean zoomToDefault = false;        if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS)                && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) {            setNewZoomScale(mActualScale, true, true);            float overviewScale = (float) getViewWidth() / mZoomOverviewWidth;            if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) {                mInZoomOverview = true;            }        } else if (!mInZoomOverview) {            float newScale = (float) getViewWidth() / mZoomOverviewWidth;            if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) {                mInZoomOverview = true;                // Force the titlebar fully reveal in overview mode                if (mScrollY < getTitleHeight()) mScrollY = 0;                zoomWithPreview(newScale, true);            } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) {                zoomToDefault = true;            }        } else {            zoomToDefault = true;        }        if (zoomToDefault) {            mInZoomOverview = false;            int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale);            if (left != NO_LEFTEDGE) {                // add a 5pt padding to the left edge.                int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5))                        - mScrollX;                // Re-calculate the zoom center so that the new scroll x will be                // on the left edge.                if (viewLeft > 0) {                    mZoomCenterX = viewLeft * mDefaultScale                            / (mDefaultScale - mActualScale);                } else {                    scrollBy(viewLeft, 0);                    mZoomCenterX = 0;                }            }            zoomWithPreview(mDefaultScale, true);        }    }    // Called by JNI to handle a touch on a node representing an email address,    // address, or phone number    private void overrideLoading(String url) {        mCallbackProxy.uiOverrideUrlLoading(url);    }    @Override    public boolean requestFocus(int direction, Rect previouslyFocusedRect) {        boolean result = false;        if (inEditingMode()) {            result = mWebTextView.requestFocus(direction,                    previouslyFocusedRect);        } else {            result = super.requestFocus(direction, previouslyFocusedRect);            if (mWebViewCore.getSettings().getNeedInitialFocus()) {                // For cases such as GMail, where we gain focus from a direction,                // we want to move to the first available link.                // FIXME: If there are no visible links, we may not want to                int fakeKeyDirection = 0;                switch(direction) {                    case View.FOCUS_UP:                        fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP;                        break;                    case View.FOCUS_DOWN:                        fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN;                        break;                    case View.FOCUS_LEFT:                        fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT;                        break;                    case View.FOCUS_RIGHT:                        fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT;                        break;                    default:                        return result;                }                if (mNativeClass != 0 && !nativeHasCursorNode()) {                    navHandledKey(fakeKeyDirection, 1, true, 0);                }            }        }        return result;    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        int heightMode = MeasureSpec.getMode(heightMeasureSpec);        int heightSize = MeasureSpec.getSize(heightMeasureSpec);        int widthMode = MeasureSpec.getMode(widthMeasureSpec);        int widthSize = MeasureSpec.getSize(widthMeasureSpec);        int measuredHeight = heightSize;        int measuredWidth = widthSize;        // Grab the content size from WebViewCore.        int contentHeight = contentToViewDimension(mContentHeight);        int contentWidth = contentToViewDimension(mContentWidth);//        Log.d(LOGTAG, "------- measure " + heightMode);        if (heightMode != MeasureSpec.EXACTLY) {            mHeightCanMeasure = true;            measuredHeight = contentHeight;            if (heightMode == MeasureSpec.AT_MOST) {                // If we are larger than the AT_MOST height, then our height can                // no longer be measured and we should scroll internally.                if (measuredHeight > heightSize) {                    measuredHeight = heightSize;                    mHeightCanMeasure = false;                }            }        } else {            mHeightCanMeasure = false;        }        if (mNativeClass != 0) {            nativeSetHeightCanMeasure(mHeightCanMeasure);        }        // For the width, always use the given size unless unspecified.        if (widthMode == MeasureSpec.UNSPECIFIED) {            mWidthCanMeasure = true;            measuredWidth = contentWidth;        } else {            mWidthCanMeasure = false;        }        synchronized (this) {            setMeasuredDimension(measuredWidth, measuredHeight);        }    }    @Override    public boolean requestChildRectangleOnScreen(View child,                                                 Rect rect,                                                 boolean immediate) {        rect.offset(child.getLeft() - child.getScrollX(),                child.getTop() - child.getScrollY());        Rect content = new Rect(viewToContentX(mScrollX),                viewToContentY(mScrollY),                viewToContentX(mScrollX + getWidth()                - getVerticalScrollbarWidth()),                viewToContentY(mScrollY + getViewHeightWithTitle()));        content = nativeSubtractLayers(content);        int screenTop = contentToViewY(content.top);        int screenBottom = contentToViewY(content.bottom);        int height = screenBottom - screenTop;        int scrollYDelta = 0;        if (rect.bottom > screenBottom) {            int oneThirdOfScreenHeight = height / 3;            if (rect.height() > 2 * oneThirdOfScreenHeight) {                // If the rectangle is too tall to fit in the bottom two thirds                // of the screen, place it at the top.                scrollYDelta = rect.top - screenTop;            } else {                // If the rectangle will still fit on screen, we want its                // top to be in the top third of the screen.                scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight);            }        } else if (rect.top < screenTop) {            scrollYDelta = rect.top - screenTop;        }        int screenLeft = contentToViewX(content.left);        int screenRight = contentToViewX(content.right);        int width = screenRight - screenLeft;        int scrollXDelta = 0;        if (rect.right > screenRight && rect.left > screenLeft) {            if (rect.width() > width) {                scrollXDelta += (rect.left - screenLeft);            } else {                scrollXDelta += (rect.right - screenRight);            }        } else if (rect.left < screenLeft) {            scrollXDelta -= (screenLeft - rect.left);        }        if ((scrollYDelta | scrollXDelta) != 0) {            return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0);        }        return false;    }    /** package */ void replaceTextfieldText(int oldStart, int oldEnd,            String replace, int newStart, int newEnd) {        WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData();        arg.mReplace = replace;        arg.mNewStart = newStart;        arg.mNewEnd = newEnd;        mTextGeneration++;        arg.mTextGeneration = mTextGeneration;        mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg);    }    /** package */ void passToJavaScript(String currentText, KeyEvent event) {        WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData();        arg.mEvent = event;        arg.mCurrentText = currentText;        // Increase our text generation number, and pass it to webcore thread        mTextGeneration++;        mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg);        // WebKit's document state is not saved until about to leave the page.        // To make sure the host application, like Browser, has the up to date        // document state when it goes to background, we force to save the        // document state.        mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE);        mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE,                cursorData(), 1000);    }    /** package */ synchronized WebViewCore getWebViewCore() {        return mWebViewCore;    }    //-------------------------------------------------------------------------    // Methods can be called from a separate thread, like WebViewCore    // If it needs to call the View system, it has to send message.    //-------------------------------------------------------------------------    /***     * General handler to receive message coming from webkit thread     */    class PrivateHandler extends Handler {        @Override        public void handleMessage(Message msg) {            // exclude INVAL_RECT_MSG_ID since it is frequently output            if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) {                if (msg.what >= FIRST_PRIVATE_MSG_ID                        && msg.what <= LAST_PRIVATE_MSG_ID) {                    Log.v(LOGTAG, HandlerPrivateDebugString[msg.what                            - FIRST_PRIVATE_MSG_ID]);                } else if (msg.what >= FIRST_PACKAGE_MSG_ID                        && msg.what <= LAST_PACKAGE_MSG_ID) {                    Log.v(LOGTAG, HandlerPackageDebugString[msg.what                            - FIRST_PACKAGE_MSG_ID]);                } else {                    Log.v(LOGTAG, Integer.toString(msg.what));                }            }            if (mWebViewCore == null) {                // after WebView's destroy() is called, skip handling messages.                return;            }            switch (msg.what) {                case REMEMBER_PASSWORD: {                    mDatabase.setUsernamePassword(                            msg.getData().getString("host"),                            msg.getData().getString("username"),                            msg.getData().getString("password"));                    ((Message) msg.obj).sendToTarget();                    break;                }                case NEVER_REMEMBER_PASSWORD: {                    mDatabase.setUsernamePassword(                            msg.getData().getString("host"), null, null);                    ((Message) msg.obj).sendToTarget();                    break;                }                case PREVENT_DEFAULT_TIMEOUT: {                    // if timeout happens, cancel it so that it won't block UI                    // to continue handling touch events                    if ((msg.arg1 == MotionEvent.ACTION_DOWN                            && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES)                            || (msg.arg1 == MotionEvent.ACTION_MOVE                            && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) {                        cancelWebCoreTouchEvent(                                viewToContentX((int) mLastTouchX + mScrollX),                                viewToContentY((int) mLastTouchY + mScrollY),                                true);                    }                    break;                }                case SWITCH_TO_SHORTPRESS: {                    if (mTouchMode == TOUCH_INIT_MODE) {                        if (mPreventDefault != PREVENT_DEFAULT_YES) {                            mTouchMode = TOUCH_SHORTPRESS_START_MODE;                            updateSelection();                        } else {                            // set to TOUCH_SHORTPRESS_MODE so that it won't                            // trigger double tap any more                            mTouchMode = TOUCH_SHORTPRESS_MODE;                        }                    } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) {                        mTouchMode = TOUCH_DONE_MODE;                    }                    break;                }                case SWITCH_TO_LONGPRESS: {                    if (inFullScreenMode() || mDeferTouchProcess) {                        TouchEventData ted = new TouchEventData();                        ted.mAction = WebViewCore.ACTION_LONGPRESS;                        ted.mX = viewToContentX((int) mLastTouchX + mScrollX);                        ted.mY = viewToContentY((int) mLastTouchY + mScrollY);                        // metaState for long press is tricky. Should it be the                        // state when the press started or when the press was                        // released? Or some intermediary key state? For                        // simplicity for now, we don't set it.                        ted.mMetaState = 0;                        ted.mReprocess = mDeferTouchProcess;                        if (mDeferTouchProcess) {                            ted.mViewX = mLastTouchX;                            ted.mViewY = mLastTouchY;                        }                        mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);                    } else if (mPreventDefault != PREVENT_DEFAULT_YES) {                        mTouchMode = TOUCH_DONE_MODE;                        performLongClick();                        rebuildWebTextView();                    }                    break;                }                case RELEASE_SINGLE_TAP: {                    doShortPress();                    break;                }                case SCROLL_BY_MSG_ID:                    setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj);                    break;                case SYNC_SCROLL_TO_MSG_ID:                    if (mUserScroll) {                        // if user has scrolled explicitly, don't sync the                        // scroll position any more                        mUserScroll = false;                        break;                    }                    // fall through                case SCROLL_TO_MSG_ID:                    if (setContentScrollTo(msg.arg1, msg.arg2)) {                        // if we can't scroll to the exact position due to pin,                        // send a message to WebCore to re-scroll when we get a                        // new picture                        mUserScroll = false;                        mWebViewCore.sendMessage(EventHub.SYNC_SCROLL,                                msg.arg1, msg.arg2);                    }                    break;                case SPAWN_SCROLL_TO_MSG_ID:                    spawnContentScrollTo(msg.arg1, msg.arg2);                    break;                case UPDATE_ZOOM_RANGE: {                    WebViewCore.RestoreState restoreState                            = (WebViewCore.RestoreState) msg.obj;                    // mScrollX contains the new minPrefWidth                    updateZoomRange(restoreState, getViewWidth(),                            restoreState.mScrollX, false);                    break;                }                case NEW_PICTURE_MSG_ID: {                    // If we've previously delayed deleting a root                    // layer, do it now.                    if (mDelayedDeleteRootLayer) {                        mDelayedDeleteRootLayer = false;                        nativeSetRootLayer(0);                    }                    WebSettings settings = mWebViewCore.getSettings();                    // called for new content                    final int viewWidth = getViewWidth();                    final WebViewCore.DrawData draw =                            (WebViewCore.DrawData) msg.obj;                    final Point viewSize = draw.mViewPoint;                    boolean useWideViewport = settings.getUseWideViewPort();                    WebViewCore.RestoreState restoreState = draw.mRestoreState;                    boolean hasRestoreState = restoreState != null;                    if (hasRestoreState) {                        updateZoomRange(restoreState, viewSize.x,                                draw.mMinPrefWidth, true);                        if (!mDrawHistory) {                            mInZoomOverview = false;                            if (mInitialScaleInPercent > 0) {                                setNewZoomScale(mInitialScaleInPercent / 100.0f,                                    mInitialScaleInPercent != mTextWrapScale * 100,                                    false);                            } else if (restoreState.mViewScale > 0) {                                mTextWrapScale = restoreState.mTextWrapScale;                                setNewZoomScale(restoreState.mViewScale, false,                                    false);                            } else {                                mInZoomOverview = useWideViewport                                    && settings.getLoadWithOverviewMode();                                float scale;                                if (mInZoomOverview) {                                    scale = (float) viewWidth                                        / DEFAULT_VIEWPORT_WIDTH;                                } else {                                    scale = restoreState.mTextWrapScale;                                }                                setNewZoomScale(scale, Math.abs(scale                                    - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT,                                    false);                            }                            setContentScrollTo(restoreState.mScrollX,                                restoreState.mScrollY);                            // As we are on a new page, remove the WebTextView. This                            // is necessary for page loads driven by webkit, and in                            // particular when the user was on a password field, so                            // the WebTextView was visible.                            clearTextEntry(false);                            // update the zoom buttons as the scale can be changed                            if (getSettings().getBuiltInZoomControls()) {                                updateZoomButtonsEnabled();                            }                        }                    }                    // We update the layout (i.e. request a layout from the                    // view system) if the last view size that we sent to                    // WebCore matches the view size of the picture we just                    // received in the fixed dimension.                    final boolean updateLayout = viewSize.x == mLastWidthSent                            && viewSize.y == mLastHeightSent;                    recordNewContentSize(draw.mWidthHeight.x,                            draw.mWidthHeight.y                            + (mFindIsUp ? mFindHeight : 0), updateLayout);                    if (DebugFlags.WEB_VIEW) {                        Rect b = draw.mInvalRegion.getBounds();                        Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" +                                b.left+","+b.top+","+b.right+","+b.bottom+"}");                    }                    invalidateContentRect(draw.mInvalRegion.getBounds());                    if (mPictureListener != null) {                        mPictureListener.onNewPicture(WebView.this, capturePicture());                    }                    if (useWideViewport) {                        // limit mZoomOverviewWidth upper bound to                        // sMaxViewportWidth so that if the page doesn't behave                        // well, the WebView won't go insane. limit the lower                        // bound to match the default scale for mobile sites.                        mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math                                .max((int) (viewWidth / mDefaultScale), Math                                        .max(draw.mMinPrefWidth,                                                draw.mViewPoint.x)));                    }                    if (!mMinZoomScaleFixed) {                        mMinZoomScale = (float) viewWidth / mZoomOverviewWidth;                    }                    if (!mDrawHistory && mInZoomOverview) {                        // fit the content width to the current view. Ignore                        // the rounding error case.                        if (Math.abs((viewWidth * mInvActualScale)                                - mZoomOverviewWidth) > 1) {                            setNewZoomScale((float) viewWidth                                    / mZoomOverviewWidth, Math.abs(mActualScale                                    - mTextWrapScale) < MINIMUM_SCALE_INCREMENT,                                    false);                        }                    }                    if (draw.mFocusSizeChanged && inEditingMode()) {                        mFocusSizeChanged = true;                    }                    if (hasRestoreState) {                        mViewManager.postReadyToDrawAll();                    }                    break;                }                case WEBCORE_INITIALIZED_MSG_ID:                    // nativeCreate sets mNativeClass to a non-zero value                    nativeCreate(msg.arg1);                    break;                case UPDATE_TEXTFIELD_TEXT_MSG_ID:                    // Make sure that the textfield is currently focused                    // and representing the same node as the pointer.                    if (inEditingMode() &&                            mWebTextView.isSameTextField(msg.arg1)) {                        if (msg.getData().getBoolean("password")) {                            Spannable text = (Spannable) mWebTextView.getText();                            int start = Selection.getSelectionStart(text);                            int end = Selection.getSelectionEnd(text);                            mWebTextView.setInPassword(true);                            // Restore the selection, which may have been                            // ruined by setInPassword.                            Spannable pword =                                    (Spannable) mWebTextView.getText();                            Selection.setSelection(pword, start, end);                        // If the text entry has created more events, ignore                        // this one.                        } else if (msg.arg2 == mTextGeneration) {                            mWebTextView.setTextAndKeepSelection(                                    (String) msg.obj);                        }                    }                    break;                case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID:                    displaySoftKeyboard(true);                    updateTextSelectionFromMessage(msg.arg1, msg.arg2,                            (WebViewCore.TextSelectionData) msg.obj);                    break;                case UPDATE_TEXT_SELECTION_MSG_ID:                    // If no textfield was in focus, and the user touched one,                    // causing it to send this message, then WebTextView has not                    // been set up yet.  Rebuild it so it can set its selection.                    rebuildWebTextView();                    updateTextSelectionFromMessage(msg.arg1, msg.arg2,                            (WebViewCore.TextSelectionData) msg.obj);                    break;                case RETURN_LABEL:                    if (inEditingMode()                            && mWebTextView.isSameTextField(msg.arg1)) {                        mWebTextView.setHint((String) msg.obj);                        InputMethodManager imm                                = InputMethodManager.peekInstance();                        // The hint is propagated to the IME in                        // onCreateInputConnection.  If the IME is already                        // active, restart it so that its hint text is updated.                        if (imm != null && imm.isActive(mWebTextView)) {                            imm.restartInput(mWebTextView);                        }                    }                    break;                case MOVE_OUT_OF_PLUGIN:                    navHandledKey(msg.arg1, 1, false, 0);                    break;                case UPDATE_TEXT_ENTRY_MSG_ID:                    // this is sent after finishing resize in WebViewCore. Make                    // sure the text edit box is still on the  screen.                    if (inEditingMode() && nativeCursorIsTextInput()) {                        mWebTextView.bringIntoView();                        rebuildWebTextView();                    }                    break;                case CLEAR_TEXT_ENTRY:                    clearTextEntry(false);                    break;                case INVAL_RECT_MSG_ID: {                    Rect r = (Rect)msg.obj;                    if (r == null) {                        invalidate();                    } else {                        // we need to scale r from content into view coords,                        // which viewInvalidate() does for us                        viewInvalidate(r.left, r.top, r.right, r.bottom);                    }                    break;                }                case IMMEDIATE_REPAINT_MSG_ID: {                    invalidate();                    break;                }                case SET_ROOT_LAYER_MSG_ID: {                    if (0 == msg.arg1) {                        // Null indicates deleting the old layer, but                        // don't actually do so until we've got the                        // new page to display.                        mDelayedDeleteRootLayer = true;                    } else {                        mDelayedDeleteRootLayer = false;                        nativeSetRootLayer(msg.arg1);                        invalidate();                    }                    break;                }                case REQUEST_FORM_DATA:                    AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj;                    if (mWebTextView.isSameTextField(msg.arg1)) {                        mWebTextView.setAdapterCustom(adapter);                    }                    break;                case RESUME_WEBCORE_PRIORITY:                    WebViewCore.resumePriority();                    WebViewCore.resumeUpdatePicture(mWebViewCore);                    break;                case LONG_PRESS_CENTER:                    // as this is shared by keydown and trackballdown, reset all                    // the states                    mGotCenterDown = false;                    mTrackballDown = false;                    performLongClick();                    break;                case WEBCORE_NEED_TOUCH_EVENTS:                    mForwardTouchEvents = (msg.arg1 != 0);                    break;                case PREVENT_TOUCH_ID:                    if (inFullScreenMode()) {                        break;                    }                    if (msg.obj == null) {                        if (msg.arg1 == MotionEvent.ACTION_DOWN                                && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) {                            // if prevent default is called from WebCore, UI                            // will not handle the rest of the touch events any                            // more.                            mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES                                    : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN;                        } else if (msg.arg1 == MotionEvent.ACTION_MOVE                                && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) {                            // the return for the first ACTION_MOVE will decide                            // whether UI will handle touch or not. Currently no                            // support for alternating prevent default                            mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES                                    : PREVENT_DEFAULT_NO;                        }                    } else if (msg.arg2 == 0) {                        // prevent default is not called in WebCore, so the                        // message needs to be reprocessed in UI                        TouchEventData ted = (TouchEventData) msg.obj;                        switch (ted.mAction) {                            case MotionEvent.ACTION_DOWN:                                mLastDeferTouchX = ted.mViewX;                                mLastDeferTouchY = ted.mViewY;                                mDeferTouchMode = TOUCH_INIT_MODE;                                break;                            case MotionEvent.ACTION_MOVE: {                                // no snapping in defer process                                if (mDeferTouchMode != TOUCH_DRAG_MODE) {                                    mDeferTouchMode = TOUCH_DRAG_MODE;                                    mLastDeferTouchX = ted.mViewX;                                    mLastDeferTouchY = ted.mViewY;                                    startDrag();                                }                                int deltaX = pinLocX((int) (mScrollX                                        + mLastDeferTouchX - ted.mViewX))                                        - mScrollX;                                int deltaY = pinLocY((int) (mScrollY                                        + mLastDeferTouchY - ted.mViewY))                                        - mScrollY;                                doDrag(deltaX, deltaY);                                if (deltaX != 0) mLastDeferTouchX = ted.mViewX;                                if (deltaY != 0) mLastDeferTouchY = ted.mViewY;                                break;                            }                            case MotionEvent.ACTION_UP:                            case MotionEvent.ACTION_CANCEL:                                if (mDeferTouchMode == TOUCH_DRAG_MODE) {                                    // no fling in defer process                                    WebViewCore.resumePriority();                                    WebViewCore.resumeUpdatePicture(mWebViewCore);                                }                                mDeferTouchMode = TOUCH_DONE_MODE;                                break;                            case WebViewCore.ACTION_DOUBLETAP:                                // doDoubleTap() needs mLastTouchX/Y as anchor                                mLastTouchX = ted.mViewX;                                mLastTouchY = ted.mViewY;                                doDoubleTap();                                mDeferTouchMode = TOUCH_DONE_MODE;                                break;                            case WebViewCore.ACTION_LONGPRESS:                                HitTestResult hitTest = getHitTestResult();                                if (hitTest != null && hitTest.mType                                        != HitTestResult.UNKNOWN_TYPE) {                                    performLongClick();                                    rebuildWebTextView();                                }                                mDeferTouchMode = TOUCH_DONE_MODE;                                break;                        }                    }                    break;                case REQUEST_KEYBOARD:                    if (msg.arg1 == 0) {                        hideSoftKeyboard();                    } else {                        displaySoftKeyboard(false);                    }                    break;                case FIND_AGAIN:                    // Ignore if find has been dismissed.                    if (mFindIsUp) {                        findAll(mLastFind);                    }                    break;                case DRAG_HELD_MOTIONLESS:                    mHeldMotionless = MOTIONLESS_TRUE;                    invalidate();                    // fall through to keep scrollbars awake                case AWAKEN_SCROLL_BARS:                    if (mTouchMode == TOUCH_DRAG_MODE                            && mHeldMotionless == MOTIONLESS_TRUE) {                        awakenScrollBars(ViewConfiguration                                .getScrollDefaultDelay(), false);                        mPrivateHandler.sendMessageDelayed(mPrivateHandler                                .obtainMessage(AWAKEN_SCROLL_BARS),                                ViewConfiguration.getScrollDefaultDelay());                    }                    break;                case DO_MOTION_UP:                    doMotionUp(msg.arg1, msg.arg2);                    break;                case SHOW_FULLSCREEN: {                    View view = (View) msg.obj;                    int npp = msg.arg1;                    if (mFullScreenHolder != null) {                        Log.w(LOGTAG, "Should not have another full screen.");                        mFullScreenHolder.dismiss();                    }                    mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp);                    mFullScreenHolder.setContentView(view);                    mFullScreenHolder.setCancelable(false);                    mFullScreenHolder.setCanceledOnTouchOutside(false);                    mFullScreenHolder.show();                    break;                }                case HIDE_FULLSCREEN:                    if (inFullScreenMode()) {                        mFullScreenHolder.dismiss();                        mFullScreenHolder = null;                    }                    break;                case DOM_FOCUS_CHANGED:                    if (inEditingMode()) {                        nativeClearCursor();                        rebuildWebTextView();                    }                    break;                case SHOW_RECT_MSG_ID: {                    WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj;                    int x = mScrollX;                    int left = contentToViewX(data.mLeft);                    int width = contentToViewDimension(data.mWidth);                    int maxWidth = contentToViewDimension(data.mContentWidth);                    int viewWidth = getViewWidth();                    if (width < viewWidth) {                        // center align                        x += left + width / 2 - mScrollX - viewWidth / 2;                    } else {                        x += (int) (left + data.mXPercentInDoc * width                                - mScrollX - data.mXPercentInView * viewWidth);                    }                    if (DebugFlags.WEB_VIEW) {                        Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" +                              width + ",maxWidth=" + maxWidth +                              ",viewWidth=" + viewWidth + ",x="                              + x + ",xPercentInDoc=" + data.mXPercentInDoc +                              ",xPercentInView=" + data.mXPercentInView+ ")");                    }                    // use the passing content width to cap x as the current                    // mContentWidth may not be updated yet                    x = Math.max(0,                            (Math.min(maxWidth, x + viewWidth)) - viewWidth);                    int top = contentToViewY(data.mTop);                    int height = contentToViewDimension(data.mHeight);                    int maxHeight = contentToViewDimension(data.mContentHeight);                    int viewHeight = getViewHeight();                    int y = (int) (top + data.mYPercentInDoc * height -                                   data.mYPercentInView * viewHeight);                    if (DebugFlags.WEB_VIEW) {                        Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" +                              height + ",maxHeight=" + maxHeight +                              ",viewHeight=" + viewHeight + ",y="                              + y + ",yPercentInDoc=" + data.mYPercentInDoc +                              ",yPercentInView=" + data.mYPercentInView+ ")");                    }                    // use the passing content height to cap y as the current                    // mContentHeight may not be updated yet                    y = Math.max(0,                            (Math.min(maxHeight, y + viewHeight) - viewHeight));                    // We need to take into account the visible title height                    // when scrolling since y is an absolute view position.                    y = Math.max(0, y - getVisibleTitleHeight());                    scrollTo(x, y);                    }                    break;                case CENTER_FIT_RECT:                    Rect r = (Rect)msg.obj;                    mInZoomOverview = false;                    centerFitRect(r.left, r.top, r.width(), r.height());                    break;                case SET_SCROLLBAR_MODES:                    mHorizontalScrollBarMode = msg.arg1;                    mVerticalScrollBarMode = msg.arg2;                    break;                default:                    super.handleMessage(msg);                    break;            }        }    }    /***     * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID     * and UPDATE_TEXT_SELECTION_MSG_ID.  Update the selection of WebTextView.     */    private void updateTextSelectionFromMessage(int nodePointer,            int textGeneration, WebViewCore.TextSelectionData data) {        if (inEditingMode()                && mWebTextView.isSameTextField(nodePointer)                && textGeneration == mTextGeneration) {            mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd);        }    }    // Class used to use a dropdown for a <select> element    private class InvokeListBox implements Runnable {        // Whether the listbox allows multiple selection.        private boolean     mMultiple;        // Passed in to a list with multiple selection to tell        // which items are selected.        private int[]       mSelectedArray;        // Passed in to a list with single selection to tell        // where the initial selection is.        private int         mSelection;        private Container[] mContainers;        // Need these to provide stable ids to my ArrayAdapter,        // which normally does not have stable ids. (Bug 1250098)        private class Container extends Object {            /***             * Possible values for mEnabled.  Keep in sync with OptionStatus in             * WebViewCore.cpp             */            final static int OPTGROUP = -1;            final static int OPTION_DISABLED = 0;            final static int OPTION_ENABLED = 1;            String  mString;            int     mEnabled;            int     mId;            public String toString() {                return mString;            }        }        /***         *  Subclass ArrayAdapter so we can disable OptionGroupLabels,         *  and allow filtering.         */        private class MyArrayListAdapter extends ArrayAdapter<Container> {            public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) {                super(context,                            multiple ? com.android.internal.R.layout.select_dialog_multichoice :                            com.android.internal.R.layout.select_dialog_singlechoice,                            objects);            }            @Override            public View getView(int position, View convertView,                    ViewGroup parent) {                // Always pass in null so that we will get a new CheckedTextView                // Otherwise, an item which was previously used as an <optgroup>                // element (i.e. has no check), could get used as an <option>                // element, which needs a checkbox/radio, but it would not have                // one.                convertView = super.getView(position, null, parent);                Container c = item(position);                if (c != null && Container.OPTION_ENABLED != c.mEnabled) {                    // ListView does not draw dividers between disabled and                    // enabled elements.  Use a LinearLayout to provide dividers                    LinearLayout layout = new LinearLayout(mContext);                    layout.setOrientation(LinearLayout.VERTICAL);                    if (position > 0) {                        View dividerTop = new View(mContext);                        dividerTop.setBackgroundResource(                                android.R.drawable.divider_horizontal_bright);                        layout.addView(dividerTop);                    }                    if (Container.OPTGROUP == c.mEnabled) {                        // Currently select_dialog_multichoice and                        // select_dialog_singlechoice are CheckedTextViews.  If                        // that changes, the class cast will no longer be valid.                        Assert.assertTrue(                                convertView instanceof CheckedTextView);                        ((CheckedTextView) convertView).setCheckMarkDrawable(                                null);                    } else {                        // c.mEnabled == Container.OPTION_DISABLED                        // Draw the disabled element in a disabled state.                        convertView.setEnabled(false);                    }                    layout.addView(convertView);                    if (position < getCount() - 1) {                        View dividerBottom = new View(mContext);                        dividerBottom.setBackgroundResource(                                android.R.drawable.divider_horizontal_bright);                        layout.addView(dividerBottom);                    }                    return layout;                }                return convertView;            }            @Override            public boolean hasStableIds() {                // AdapterView's onChanged method uses this to determine whether                // to restore the old state.  Return false so that the old (out                // of date) state does not replace the new, valid state.                return false;            }            private Container item(int position) {                if (position < 0 || position >= getCount()) {                    return null;                }                return (Container) getItem(position);            }            @Override            public long getItemId(int position) {                Container item = item(position);                if (item == null) {                    return -1;                }                return item.mId;            }            @Override            public boolean areAllItemsEnabled() {                return false;            }            @Override            public boolean isEnabled(int position) {                Container item = item(position);                if (item == null) {                    return false;                }                return Container.OPTION_ENABLED == item.mEnabled;            }        }        private InvokeListBox(String[] array, int[] enabled, int[] selected) {            mMultiple = true;            mSelectedArray = selected;            int length = array.length;            mContainers = new Container[length];            for (int i = 0; i < length; i++) {                mContainers[i] = new Container();                mContainers[i].mString = array[i];                mContainers[i].mEnabled = enabled[i];                mContainers[i].mId = i;            }        }        private InvokeListBox(String[] array, int[] enabled, int selection) {            mSelection = selection;            mMultiple = false;            int length = array.length;            mContainers = new Container[length];            for (int i = 0; i < length; i++) {                mContainers[i] = new Container();                mContainers[i].mString = array[i];                mContainers[i].mEnabled = enabled[i];                mContainers[i].mId = i;            }        }        /**         * Whenever the data set changes due to filtering, this class ensures         * that the checked item remains checked.         */        private class SingleDataSetObserver extends DataSetObserver {            private long        mCheckedId;            private ListView    mListView;            private Adapter     mAdapter;            /**             * Create a new observer.             * @param id The ID of the item to keep checked.             * @param l ListView for getting and clearing the checked states             * @param a Adapter for getting the IDs             */            public SingleDataSetObserver(long id, ListView l, Adapter a) {                mCheckedId = id;                mListView = l;                mAdapter = a;            }            public void onChanged() {                // The filter may have changed which item is checked.  Find the                // item that the ListView thinks is checked.                int position = mListView.getCheckedItemPosition();                long id = mAdapter.getItemId(position);                if (mCheckedId != id) {                    // Clear the ListView's idea of the checked item, since                    // it is incorrect                    mListView.clearChoices();                    // Search for mCheckedId.  If it is in the filtered list,                    // mark it as checked                    int count = mAdapter.getCount();                    for (int i = 0; i < count; i++) {                        if (mAdapter.getItemId(i) == mCheckedId) {                            mListView.setItemChecked(i, true);                            break;                        }                    }                }            }            public void onInvalidate() {}        }        public void run() {            final ListView listView = (ListView) LayoutInflater.from(mContext)                    .inflate(com.android.internal.R.layout.select_dialog, null);            final MyArrayListAdapter adapter = new                    MyArrayListAdapter(mContext, mContainers, mMultiple);            AlertDialog.Builder b = new AlertDialog.Builder(mContext)                    .setView(listView).setCancelable(true)                    .setInverseBackgroundForced(true);            if (mMultiple) {                b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int which) {                        mWebViewCore.sendMessage(                                EventHub.LISTBOX_CHOICES,                                adapter.getCount(), 0,                                listView.getCheckedItemPositions());                    }});                b.setNegativeButton(android.R.string.cancel,                        new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int which) {                        mWebViewCore.sendMessage(                                EventHub.SINGLE_LISTBOX_CHOICE, -2, 0);                }});            }            final AlertDialog dialog = b.create();            listView.setAdapter(adapter);            listView.setFocusableInTouchMode(true);            // There is a bug (1250103) where the checks in a ListView with            // multiple items selected are associated with the positions, not            // the ids, so the items do not properly retain their checks when            // filtered.  Do not allow filtering on multiple lists until            // that bug is fixed.            listView.setTextFilterEnabled(!mMultiple);            if (mMultiple) {                listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);                int length = mSelectedArray.length;                for (int i = 0; i < length; i++) {                    listView.setItemChecked(mSelectedArray[i], true);                }            } else {                listView.setOnItemClickListener(new OnItemClickListener() {                    public void onItemClick(AdapterView parent, View v,                            int position, long id) {                        mWebViewCore.sendMessage(                                EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0);                        dialog.dismiss();                    }                });                if (mSelection != -1) {                    listView.setSelection(mSelection);                    listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);                    listView.setItemChecked(mSelection, true);                    DataSetObserver observer = new SingleDataSetObserver(                            adapter.getItemId(mSelection), listView, adapter);                    adapter.registerDataSetObserver(observer);                }            }            dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {                public void onCancel(DialogInterface dialog) {                    mWebViewCore.sendMessage(                                EventHub.SINGLE_LISTBOX_CHOICE, -2, 0);                }            });            dialog.show();        }    }    /**     * Request a dropdown menu for a listbox with multiple selection.     *     * @param array Labels for the listbox.     * @param enabledArray  State for each element in the list.  See static     *      integers in Container class.     * @param selectedArray Which positions are initally selected.     */    void requestListBox(String[] array, int[] enabledArray, int[]            selectedArray) {        mPrivateHandler.post(                new InvokeListBox(array, enabledArray, selectedArray));    }    private void updateZoomRange(WebViewCore.RestoreState restoreState,            int viewWidth, int minPrefWidth, boolean updateZoomOverview) {        if (restoreState.mMinScale == 0) {            if (restoreState.mMobileSite) {                if (minPrefWidth > Math.max(0, viewWidth)) {                    mMinZoomScale = (float) viewWidth / minPrefWidth;                    mMinZoomScaleFixed = false;                    if (updateZoomOverview) {                        WebSettings settings = getSettings();                        mInZoomOverview = settings.getUseWideViewPort() &&                                settings.getLoadWithOverviewMode();                    }                } else {                    mMinZoomScale = restoreState.mDefaultScale;                    mMinZoomScaleFixed = true;                }            } else {                mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE;                mMinZoomScaleFixed = false;            }        } else {            mMinZoomScale = restoreState.mMinScale;            mMinZoomScaleFixed = true;        }        if (restoreState.mMaxScale == 0) {            mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE;        } else {            mMaxZoomScale = restoreState.mMaxScale;        }    }    /**     * Request a dropdown menu for a listbox with single selection or a single     * <select> element.     *     * @param array Labels for the listbox.     * @param enabledArray  State for each element in the list.  See static     *      integers in Container class.     * @param selection Which position is initally selected.     */    void requestListBox(String[] array, int[] enabledArray, int selection) {        mPrivateHandler.post(                new InvokeListBox(array, enabledArray, selection));    }    // called by JNI    private void sendMoveFocus(int frame, int node) {        mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS,                new WebViewCore.CursorData(frame, node, 0, 0));    }    // called by JNI    private void sendMoveMouse(int frame, int node, int x, int y) {        mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE,                new WebViewCore.CursorData(frame, node, x, y));    }    /**     * Send a mouse move event to the webcore thread.     *     * @param removeFocus Pass true if the "mouse" cursor is now over a node     *                    which wants key events, but it is not the focus. This     *                    will make the visual appear as though nothing is in     *                    focus.  Remove the WebTextView, if present, and stop     *                    drawing the blinking caret.     * called by JNI     */    private void sendMoveMouseIfLatest(boolean removeFocus) {        if (removeFocus) {            clearTextEntry(true);        }        mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST,                cursorData());    }    // called by JNI    private void sendMotionUp(int touchGeneration,            int frame, int node, int x, int y) {        WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData();        touchUpData.mMoveGeneration = touchGeneration;        touchUpData.mFrame = frame;        touchUpData.mNode = node;        touchUpData.mX = x;        touchUpData.mY = y;        mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData);    }    private int getScaledMaxXScroll() {        int width;        if (mHeightCanMeasure == false) {            width = getViewWidth() / 4;        } else {            Rect visRect = new Rect();            calcOurVisibleRect(visRect);            width = visRect.width() / 2;        }        // FIXME the divisor should be retrieved from somewhere        return viewToContentX(width);    }    private int getScaledMaxYScroll() {        int height;        if (mHeightCanMeasure == false) {            height = getViewHeight() / 4;        } else {            Rect visRect = new Rect();            calcOurVisibleRect(visRect);            height = visRect.height() / 2;        }        // FIXME the divisor should be retrieved from somewhere        // the closest thing today is hard-coded into ScrollView.java        // (from ScrollView.java, line 363)   int maxJump = height/2;        return Math.round(height * mInvActualScale);    }    /***     * Called by JNI to invalidate view     */    private void viewInvalidate() {        invalidate();    }    /***     * Pass the key to the plugin.  This assumes that nativeFocusIsPlugin()     * returned true.     */    private void letPluginHandleNavKey(int keyCode, long time, boolean down) {        int keyEventAction;        int eventHubAction;        if (down) {            keyEventAction = KeyEvent.ACTION_DOWN;            eventHubAction = EventHub.KEY_DOWN;            playSoundEffect(keyCodeToSoundsEffect(keyCode));        } else {            keyEventAction = KeyEvent.ACTION_UP;            eventHubAction = EventHub.KEY_UP;        }        KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode,                1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0)                | (false ? KeyEvent.META_ALT_ON : 0) // FIXME                | (false ? KeyEvent.META_SYM_ON : 0) // FIXME                , 0, 0, 0);        mWebViewCore.sendMessage(eventHubAction, event);    }    // return true if the key was handled    private boolean navHandledKey(int keyCode, int count, boolean noScroll,            long time) {        if (mNativeClass == 0) {            return false;        }        mLastCursorTime = time;        mLastCursorBounds = nativeGetCursorRingBounds();        boolean keyHandled                = nativeMoveCursor(keyCode, count, noScroll) == false;        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds                    + " mLastCursorTime=" + mLastCursorTime                    + " handled=" + keyHandled);        }        if (keyHandled == false || mHeightCanMeasure == false) {            return keyHandled;        }        Rect contentCursorRingBounds = nativeGetCursorRingBounds();        if (contentCursorRingBounds.isEmpty()) return keyHandled;        Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds);        Rect visRect = new Rect();        calcOurVisibleRect(visRect);        Rect outset = new Rect(visRect);        int maxXScroll = visRect.width() / 2;        int maxYScroll = visRect.height() / 2;        outset.inset(-maxXScroll, -maxYScroll);        if (Rect.intersects(outset, viewCursorRingBounds) == false) {            return keyHandled;        }        // FIXME: Necessary because ScrollView/ListView do not scroll left/right        int maxH = Math.min(viewCursorRingBounds.right - visRect.right,                maxXScroll);        if (maxH > 0) {            pinScrollBy(maxH, 0, true, 0);        } else {            maxH = Math.max(viewCursorRingBounds.left - visRect.left,                    -maxXScroll);            if (maxH < 0) {                pinScrollBy(maxH, 0, true, 0);            }        }        if (mLastCursorBounds.isEmpty()) return keyHandled;        if (mLastCursorBounds.equals(contentCursorRingBounds)) {            return keyHandled;        }        if (DebugFlags.WEB_VIEW) {            Log.v(LOGTAG, "navHandledKey contentCursorRingBounds="                    + contentCursorRingBounds);        }        requestRectangleOnScreen(viewCursorRingBounds);        mUserScroll = true;        return keyHandled;    }    /***     * Set the background color. It's white by default. Pass     * zero to make the view transparent.     * @param color   the ARGB color described by Color.java     */    public void setBackgroundColor(int color) {        mBackgroundColor = color;        mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color);    }    public void debugDump() {        nativeDebugDump();        mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE);    }    /***     * Draw the HTML page into the specified canvas. This call ignores any     * view-specific zoom, scroll offset, or other changes. It does not draw     * any view-specific chrome, such as progress or URL bars.     *     * @hide only needs to be accessible to Browser and testing     */    public void drawPage(Canvas canvas) {        mWebViewCore.drawContentPicture(canvas, 0, false, false);    }    /***     * Set the time to wait between passing touches to WebCore. See also the     * TOUCH_SENT_INTERVAL member for further discussion.     *     * @hide This is only used by the DRT test application.     */    public void setTouchInterval(int interval) {        mCurrentTouchInterval = interval;    }    /***     *  Update our cache with updatedText.     *  @param updatedText  The new text to put in our cache.     */    /** package */ void updateCachedTextfield(String updatedText) {        // Also place our generation number so that when we look at the cache        // we recognize that it is up to date.        nativeUpdateCachedTextfield(updatedText, mTextGeneration);    }    private native int nativeCacheHitFramePointer();    private native Rect nativeCacheHitNodeBounds();    private native int nativeCacheHitNodePointer();    /** package */ native void nativeClearCursor();    private native void     nativeCreate(int ptr);    private native int      nativeCursorFramePointer();    private native Rect     nativeCursorNodeBounds();    private native int nativeCursorNodePointer();    /** package */ native boolean nativeCursorMatchesFocus();    private native boolean  nativeCursorIntersects(Rect visibleRect);    private native boolean  nativeCursorIsAnchor();    private native boolean  nativeCursorIsTextInput();    private native Point    nativeCursorPosition();    private native String   nativeCursorText();    /***     * Returns true if the native cursor node says it wants to handle key events     * (ala plugins). This can only be called if mNativeClass is non-zero!     */    private native boolean  nativeCursorWantsKeyEvents();    private native void     nativeDebugDump();    private native void     nativeDestroy();    private native boolean  nativeEvaluateLayersAnimations();    private native void     nativeDrawExtras(Canvas canvas, int extra);    private native void     nativeDumpDisplayTree(String urlOrNull);    private native int      nativeFindAll(String findLower, String findUpper);    private native void     nativeFindNext(boolean forward);    /** package */ native int      nativeFocusCandidateFramePointer();    /** package */ native boolean  nativeFocusCandidateHasNextTextfield();    /** package */ native boolean  nativeFocusCandidateIsPassword();    private native boolean  nativeFocusCandidateIsRtlText();    private native boolean  nativeFocusCandidateIsTextInput();    /** package */ native int      nativeFocusCandidateMaxLength();    /** package */ native String   nativeFocusCandidateName();    private native Rect     nativeFocusCandidateNodeBounds();    /** package */ native int      nativeFocusCandidatePointer();    private native String   nativeFocusCandidateText();    private native int      nativeFocusCandidateTextSize();    /***     * Returns an integer corresponding to WebView.cpp::type.     * See WebTextView.setType()     */    private native int      nativeFocusCandidateType();    private native boolean  nativeFocusIsPlugin();    private native Rect     nativeFocusNodeBounds();    /** package */ native int nativeFocusNodePointer();    private native Rect     nativeGetCursorRingBounds();    private native String   nativeGetSelection();    private native boolean  nativeHasCursorNode();    private native boolean  nativeHasFocusNode();    private native void     nativeHideCursor();    private native String   nativeImageURI(int x, int y);    private native void     nativeInstrumentReport();    /** package */ native boolean nativeMoveCursorToNextTextInput();    // return true if the page has been scrolled    private native boolean  nativeMotionUp(int x, int y, int slop);    // returns false if it handled the key    private native boolean  nativeMoveCursor(int keyCode, int count,            boolean noScroll);    private native int      nativeMoveGeneration();    private native void     nativeMoveSelection(int x, int y,            boolean extendSelection);    private native boolean  nativePointInNavCache(int x, int y, int slop);    // Like many other of our native methods, you must make sure that    // mNativeClass is not null before calling this method.    private native void     nativeRecordButtons(boolean focused,            boolean pressed, boolean invalidate);    private native void     nativeSelectBestAt(Rect rect);    private native void     nativeSetFindIsEmpty();    private native void     nativeSetFindIsUp(boolean isUp);    private native void     nativeSetFollowedLink(boolean followed);    private native void     nativeSetHeightCanMeasure(boolean measure);    private native void     nativeSetRootLayer(int layer);    private native void     nativeSetSelectionPointer(boolean set,            float scale, int x, int y, boolean extendSelection);    private native void     nativeSetSelectionRegion(boolean set);    private native Rect     nativeSubtractLayers(Rect content);    private native int      nativeTextGeneration();    // Never call this version except by updateCachedTextfield(String) -    // we always want to pass in our generation number.    private native void     nativeUpdateCachedTextfield(String updatedText,            int generation);    // return NO_LEFTEDGE means failure.    private static final int NO_LEFTEDGE = -1;    private native int      nativeGetBlockLeftEdge(int x, int y, float scale);}