Java程序
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/*
* 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.ActivityManager;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.ClipboardManager;
import android.content.ComponentCallbacks2;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
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.DrawFilter;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.Picture;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region;
import android.graphics.RegionIterator;
import android.graphics.Shader;
import android.graphics.drawable.Drawable;
import android.net.Proxy;
import android.net.ProxyProperties;
import android.net.Uri;
import android.net.http.SslCertificate;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.StrictMode;
import android.provider.Settings;
import android.speech.tts.TextToSpeech;
import android.util.AttributeSet;
import android.util.EventLog;
import android.util.Log;
import android.view.Display;
import android.view.Gravity;
import android.view.HapticFeedbackConstants;
import android.view.HardwareCanvas;
import android.view.InputDevice;
import android.view.KeyCharacterMap;
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.ViewParent;
import android.view.ViewTreeObserver;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.webkit.WebTextView.AutoCompleteAdapter;
import android.webkit.WebViewCore.DrawData;
import android.webkit.WebViewCore.EventHub;
import android.webkit.WebViewCore.TouchEventData;
import android.webkit.WebViewCore.TouchHighlightData;
import android.widget.AbsoluteLayout;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.OverScroller;
import android.widget.Toast;
import junit.framework.Assert;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Vector;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLContext;
import javax.microedition.khronos.egl.EGLDisplay;
import static javax.microedition.khronos.egl.EGL10.*;
/**
* <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>
*
* <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View
* tutorial</a>.</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", null);
* // ... 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>
*
*
*/
@Widget
public class WebView extends AbsoluteLayout
implements ViewTreeObserver.OnGlobalFocusChangeListener,
ViewGroup.OnHierarchyChangeListener {
private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener {
public void onGlobalLayout() {
if (isShown()) {
setGLRectViewport();
}
}
}
private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener {
public void onScrollChanged() {
if (isShown()) {
setGLRectViewport();
}
}
}
// The listener to capture global layout change event.
private InnerGlobalLayoutListener mGlobalLayoutListener = null;
// The listener to capture scroll event.
private InnerScrollChangedListener mScrollChangedListener = null;
// 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;
// Reference to the AlertDialog displayed by InvokeListBox.
// It's used to dismiss the dialog in destroy if not done before.
private AlertDialog mListBoxDialog = null;
static final String LOGTAG = "webview";
private ZoomManager mZoomManager;
private final Rect mGLRectViewport = new Rect();
private final Rect mViewRectViewport = new Rect();
private final RectF mVisibleContentRect = new RectF();
private boolean mGLViewportEmpty = false;
/**
* 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;
}
}
private static class OnTrimMemoryListener implements ComponentCallbacks2 {
private static OnTrimMemoryListener sInstance = null;
static void init(Context c) {
if (sInstance == null) {
sInstance = new OnTrimMemoryListener(c.getApplicationContext());
}
}
private OnTrimMemoryListener(Context c) {
c.registerComponentCallbacks(this);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
// Ignore
}
@Override
public void onLowMemory() {
// Ignore
}
@Override
public void onTrimMemory(int level) {
if (DebugFlags.WEB_VIEW) {
Log.d("WebView", "onTrimMemory: " + level);
}
WebView.nativeOnTrimMemory(level);
}
}
// 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;
/* package */ void incrementTextGeneration() { 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 in pixels.
* Use integer to prevent loss of dragging delta calculation accuracy;
* which was done in float and converted to integer, and resulted in gradual
* and compounding touch position and view dragging mismatch.
*/
private int mLastTouchX;
private int mLastTouchY;
private int mStartTouchX;
private int mStartTouchY;
private float mAverageAngle;
/**
* 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.
* (Update 12/14/2010: changed to 0 since current device should be able to
* handle the raw events and Map team voted to have the raw events too.
*/
private static final int TOUCH_SENT_INTERVAL = 0;
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;
// The id of the native layer being scrolled.
private int mCurrentScrollingLayerId;
private Rect mScrollingLayerRect = new Rect();
// only trigger accelerated fling if the new velocity is at least
// MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity
private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f;
/**
* 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_PINCH_DRAG = 8;
private static final int TOUCH_DRAG_LAYER_MODE = 9;
// Whether to forward the touch events to WebCore
// Can only be set by WebKit via JNI.
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;
private HitTestResult mInitialHitTestResult;
/**
* 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.
// In addition, a double tap on a trackpad will always have a duration of
// 300ms, so this value must be at least that (otherwise we will timeout the
// first tap and convert it to a long press).
private static final int TAP_TIMEOUT = 300;
// 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 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;
// Since view height sent to webkit could be fixed to avoid relayout, this
// value records the last sent actual view height.
int mLastActualHeightSent;
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
// Used by OverScrollGlow
OverScroller mScroller;
private boolean mInOverScrollMode = false;
private static Paint mOverScrollBackground;
private static Paint mOverScrollBorder;
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;
// An instance for injecting accessibility in WebViews with disabled
// JavaScript or ones for which no accessibility script exists
private AccessibilityInjector mAccessibilityInjector;
// flag indicating if accessibility script is injected so we
// know to handle Shift and arrows natively first
private boolean mAccessibilityScriptInjected;
static final boolean USE_JAVA_TEXT_SELECTION = true;
static final boolean DEBUG_TEXT_HANDLES = false;
private Region mTextSelectionRegion = new Region();
private Paint mTextSelectionPaint;
private Drawable mSelectHandleLeft;
private Drawable mSelectHandleRight;
static final boolean USE_WEBKIT_RINGS = false;
// the color used to highlight the touch rectangles
private static final int HIGHLIGHT_COLOR = 0x6633b5e5;
// the round corner for the highlight path
private static final float TOUCH_HIGHLIGHT_ARC = 5.0f;
// the region indicating where the user touched on the screen
private Region mTouchHighlightRegion = new Region();
// the paint for the touch highlight
private Paint mTouchHightlightPaint;
// debug only
private static final boolean DEBUG_TOUCH_HIGHLIGHT = true;
private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000;
private Paint mTouchCrossHairColor;
private int mTouchHighlightX;
private int mTouchHighlightY;
private long mTouchHighlightRequested;
// Basically this proxy is used to tell the Video to update layer tree at
// SetBaseLayer time and to pause when WebView paused.
private HTML5VideoViewProxy mHTML5VideoViewProxy;
// If we are using a set picture, don't send view updates to webkit
private boolean mBlockWebkitViewMessages = false;
// cached value used to determine if we need to switch drawing models
private boolean mHardwareAccelSkia = false;
/*
* 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 DRAG_HELD_MOTIONLESS = 8;
private static final int AWAKEN_SCROLL_BARS = 9;
private static final int PREVENT_DEFAULT_TIMEOUT = 10;
private static final int SCROLL_SELECT_TEXT = 11;
private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD;
private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT;
/*
* Package message ids
*/
static final int SCROLL_TO_MSG_ID = 101;
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 UNHANDLED_NAV_KEY = 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 REPLACE_BASE_CONTENT = 123;
static final int FORM_DID_BLUR = 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;
static final int SELECTION_STRING_CHANGED = 130;
static final int SET_TOUCH_HIGHLIGHT_RECTS = 131;
static final int SAVE_WEBARCHIVE_FINISHED = 132;
static final int SET_AUTOFILLABLE = 133;
static final int AUTOFILL_COMPLETE = 134;
static final int SELECT_AT = 135;
static final int SCREEN_ON = 136;
static final int ENTER_FULLSCREEN_VIDEO = 137;
static final int UPDATE_SELECTION = 138;
static final int UPDATE_ZOOM_DENSITY = 139;
private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID;
private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS;
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;
"SCROLL_SELECT_TEXT" // = 11;
};
static final String[] HandlerPackageDebugString = {
"SCROLL_TO_MSG_ID", // = 101;
"102", // = 102;
"103", // = 103;
"104", // = 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;
"UNHANDLED_NAV_KEY", // = 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;
"REPLACE_BASE_CONTENT", // = 123;
"FORM_DID_BLUR", // = 124;
"RETURN_LABEL", // = 125;
"FIND_AGAIN", // = 126;
"CENTER_FIT_RECT", // = 127;
"REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128;
"SET_SCROLLBAR_MODES", // = 129;
"SELECTION_STRING_CHANGED", // = 130;
"SET_TOUCH_HIGHLIGHT_RECTS", // = 131;
"SAVE_WEBARCHIVE_FINISHED", // = 132;
"SET_AUTOFILLABLE", // = 133;
"AUTOFILL_COMPLETE", // = 134;
"SELECT_AT", // = 135;
"SCREEN_ON", // = 136;
"ENTER_FULLSCREEN_VIDEO", // = 137;
"UPDATE_SELECTION", // = 138;
"UPDATE_ZOOM_DENSITY" // = 139;
};
// 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 = 980;
// 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;
// initial scale in percent. 0 means using default.
private int mInitialScaleInPercent = 0;
// Whether or not a scroll event should be sent to webkit. This is only set
// to false when restoring the scroll position.
private boolean mSendScrollEvent = true;
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;
// constants for determining script injection strategy
private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1;
private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0;
private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1;
// the alias via which accessibility JavaScript interface is exposed
private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility";
// JavaScript to inject the script chooser which will
// pick the right script for the current URL
private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT =
"javascript:(function() {" +
" var chooser = document.createElement('script');" +
" chooser.type = 'text/javascript';" +
" chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" +
" document.getElementsByTagName('head')[0].appendChild(chooser);" +
" })();";
// Regular expression that matches the "axs" URL parameter.
// The value of 0 means the accessibility script is opted out
// The value of 1 means the accessibility script is already injected
private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))";
// TextToSpeech instance exposed to JavaScript to the injected screenreader.
private TextToSpeech mTextToSpeech;
// variable to cache the above pattern in case accessibility is enabled.
private Pattern mMatchAxsUrlParameterPattern;
/**
* Max distance to overscroll by in pixels.
* This how far content can be pulled beyond its normal bounds by the user.
*/
private int mOverscrollDistance;
/**
* Max distance to overfling by in pixels.
* This is how far flinged content can move beyond the end of its normal bounds.
*/
private int mOverflingDistance;
private OverScrollGlow mOverScrollGlow;
// Used to match key downs and key ups
private Vector<Integer> mKeysPressed;
/* package */ static boolean mLogEvent = true;
// for event log
private long mLastTouchUpTime = 0;
private WebViewCore.AutoFillData mAutoFillData;
private static boolean sNotificationsEnabled = true;
/**
* 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;
private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second
private int mAutoScrollX = 0;
private int mAutoScrollY = 0;
private int mMinAutoScrollX = 0;
private int mMaxAutoScrollX = 0;
private int mMinAutoScrollY = 0;
private int mMaxAutoScrollY = 0;
private Rect mScrollingLayerBounds = new Rect();
private boolean mSentAutoScrollMessage = false;
// Temporary hack to work around the context removal upon memory pressure
private static boolean mIncrementEGLContextHack = false;
// used for serializing asynchronously handled touch events.
private final TouchEventQueue mTouchEventQueue = new TouchEventQueue();
// Used to track whether picture updating was paused due to a window focus change.
private boolean mPictureUpdatePausedForFocusChange = false;
// Used to notify listeners of a new picture.
private PictureListener mPictureListener;
/**
* Interface to listen for new pictures as they change.
* @deprecated This interface is now obsolete.
*/
@Deprecated
public interface PictureListener {
/**
* Notify the listener that the picture has changed.
* @param view The WebView that owns the picture.
* @param picture The new picture.
* @deprecated Due to internal changes, the picture does not include
* composited layers such as fixed position elements or scrollable divs.
* While the PictureListener API can still be used to detect changes in
* the WebView content, you are advised against its usage until a replacement
* is provided in a future Android release
*/
@Deprecated
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;
/**
* @deprecated This type is no longer used.
*/
@Deprecated
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;
/**
* @deprecated This type is no longer used.
*/
@Deprecated
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;
}
}
/**
* 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, false);
}
/**
* 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,
boolean privateBrowsing) {
this(context, attrs, defStyle, null, privateBrowsing);
}
/**
* 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 interface 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, boolean privateBrowsing) {
super(context, attrs, defStyle);
checkThread();
if (context == null) {
throw new IllegalArgumentException("Invalid context argument");
}
// Used by the chrome stack to find application paths
JniUtil.setContext(context);
mCallbackProxy = new CallbackProxy(context, this);
mViewManager = new ViewManager(this);
L10nUtils.setApplicationContext(context.getApplicationContext());
mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces);
mDatabase = WebViewDatabase.getInstance(context);
mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel
mZoomManager = new ZoomManager(this, mCallbackProxy);
/* The init method must follow the creation of certain member variables,
* such as the mZoomManager.
*/
init();
setupPackageListener(context);
setupProxyListener(context);
updateMultiTouchSupport(context);
if (privateBrowsing) {
startPrivateBrowsing();
}
mAutoFillData = new WebViewCore.AutoFillData();
}
private static class ProxyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) {
handleProxyBroadcast(intent);
}
}
}
/*
* Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts.
*/
private static ProxyReceiver sProxyReceiver;
/*
* @param context This method expects this to be a valid context
*/
private static synchronized void setupProxyListener(Context context) {
if (sProxyReceiver != null || sNotificationsEnabled == false) {
return;
}
IntentFilter filter = new IntentFilter();
filter.addAction(Proxy.PROXY_CHANGE_ACTION);
sProxyReceiver = new ProxyReceiver();
Intent currentProxy = context.getApplicationContext().registerReceiver(
sProxyReceiver, filter);
if (currentProxy != null) {
handleProxyBroadcast(currentProxy);
}
}
/*
* @param context This method expects this to be a valid context
*/
private static synchronized void disableProxyListener(Context context) {
if (sProxyReceiver == null)
return;
context.getApplicationContext().unregisterReceiver(sProxyReceiver);
sProxyReceiver = null;
}
private static void handleProxyBroadcast(Intent intent) {
ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO);
if (proxyProperties == null || proxyProperties.getHost() == null) {
WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null);
return;
}
WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties);
}
/*
* A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED
* or ACTION_PACKAGE_REMOVED.
*/
private static boolean sPackageInstallationReceiverAdded = false;
/*
* A set of Google packages we monitor for the
* navigator.isApplicationInstalled() API. Add additional packages as
* needed.
*/
private static Set<String> sGoogleApps;
static {
sGoogleApps = new HashSet<String>();
sGoogleApps.add("com.google.android.youtube");
}
private static class PackageListener extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
final String packageName = intent.getData().getSchemeSpecificPart();
final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) {
// if it is replacing, refreshPlugins() when adding
return;
}
if (sGoogleApps.contains(packageName)) {
if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName);
} else {
WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName);
}
}
PluginManager pm = PluginManager.getInstance(context);
if (pm.containsPluginPermissionAndSignatures(packageName)) {
pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action));
}
}
}
private void setupPackageListener(Context context) {
/*
* we must synchronize the instance check and the creation of the
* receiver to ensure that only ONE receiver exists for all WebView
* instances.
*/
synchronized (WebView.class) {
// if the receiver already exists then we do not need to register it
// again
if (sPackageInstallationReceiverAdded) {
return;
}
IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addDataScheme("package");
BroadcastReceiver packageListener = new PackageListener();
context.getApplicationContext().registerReceiver(packageListener, filter);
sPackageInstallationReceiverAdded = true;
}
// check if any of the monitored apps are already installed
AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() {
@Override
protected Set<String> doInBackground(Void... unused) {
Set<String> installedPackages = new HashSet<String>();
PackageManager pm = mContext.getPackageManager();
for (String name : sGoogleApps) {
try {
PackageInfo pInfo = pm.getPackageInfo(name,
PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES);
installedPackages.add(name);
} catch (PackageManager.NameNotFoundException e) {
// package not found
}
}
return installedPackages;
}
// Executes on the UI thread
@Override
protected void onPostExecute(Set<String> installedPackages) {
if (mWebViewCore != null) {
mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages);
}
}
};
task.execute();
}
void updateMultiTouchSupport(Context context) {
mZoomManager.updateMultiTouchSupport(context);
}
private void init() {
OnTrimMemoryListener.init(getContext());
setWillNotDraw(false);
setFocusable(true);
setFocusableInTouchMode(true);
setClickable(true);
setLongClickable(true);
final ViewConfiguration configuration = ViewConfiguration.get(getContext());
int slop = configuration.getScaledTouchSlop();
mTouchSlopSquare = slop * 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);
mZoomManager.init(density);
mMaximumFling = configuration.getScaledMaximumFlingVelocity();
// Compute the inverse of the density squared.
DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density);
mOverscrollDistance = configuration.getScaledOverscrollDistance();
mOverflingDistance = configuration.getScaledOverflingDistance();
setScrollBarStyle(super.getScrollBarStyle());
// Initially use a size of two, since the user is likely to only hold
// down two keys at a time (shift + another key)
mKeysPressed = new Vector<Integer>(2);
mHTML5VideoViewProxy = null ;
}
@Override
public boolean shouldDelayChildPressedState() {
return true;
}
/**
* Adds accessibility APIs to JavaScript.
*
* Note: This method is responsible to performing the necessary
* check if the accessibility APIs should be exposed.
*/
private void addAccessibilityApisToJavaScript() {
if (AccessibilityManager.getInstance(mContext).isEnabled()
&& getSettings().getJavaScriptEnabled()) {
// exposing the TTS for now ...
final Context ctx = getContext();
if (ctx != null) {
final String packageName = ctx.getPackageName();
if (packageName != null) {
mTextToSpeech = new TextToSpeech(getContext(), null, null,
packageName + ".**webview**");
addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE);
}
}
}
}
/**
* Removes accessibility APIs from JavaScript.
*/
private void removeAccessibilityApisFromJavaScript() {
// exposing the TTS for now ...
if (mTextToSpeech != null) {
removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE);
mTextToSpeech.shutdown();
mTextToSpeech = null;
}
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setScrollable(isScrollableForAccessibility());
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
event.setScrollable(isScrollableForAccessibility());
event.setScrollX(mScrollX);
event.setScrollY(mScrollY);
final int convertedContentWidth = contentToViewX(getContentWidth());
final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight;
event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0));
final int convertedContentHeight = contentToViewY(getContentHeight());
final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom;
event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0));
}
private boolean isScrollableForAccessibility() {
return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight
|| contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom);
}
@Override
public void setOverScrollMode(int mode) {
super.setOverScrollMode(mode);
if (mode != OVER_SCROLL_NEVER) {
if (mOverScrollGlow == null) {
mOverScrollGlow = new OverScrollGlow(this);
}
} else {
mOverScrollGlow = null;
}
}
/* package */ void adjustDefaultZoomDensity(int zoomDensity) {
final float density = mContext.getResources().getDisplayMetrics().density
* 100 / zoomDensity;
updateDefaultZoomDensity(density);
}
/* package */ void updateDefaultZoomDensity(float density) {
mNavSlop = (int) (16 * density);
mZoomManager.updateDefaultZoomDensity(density);
}
/* 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) {
checkThread();
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) {
checkThread();
mOverlayVerticalScrollbar = overlay;
}
/**
* Return whether horizontal scrollbar has overlay style
* @return TRUE if horizontal scrollbar has overlay style.
*/
public boolean overlayHorizontalScrollbar() {
checkThread();
return mOverlayHorizontalScrollbar;
}
/**
* Return whether vertical scrollbar has overlay style
* @return TRUE if vertical scrollbar has overlay style.
*/
public boolean overlayVerticalScrollbar() {
checkThread();
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 Math.max(0, getWidth() - getVerticalScrollbarWidth());
}
}
/**
* returns the height of the titlebarview (if any). Does not care about
* scrolling
* @hide
*/
protected int getTitleHeight() {
return mTitleBar != null ? mTitleBar.getHeight() : 0;
}
/**
* Return the amount of the titlebarview (if any) that is visible
*
* @deprecated This method is now obsolete.
*/
public int getVisibleTitleHeight() {
checkThread();
return getVisibleTitleHeightImpl();
}
private int getVisibleTitleHeightImpl() {
// need to restrict mScrollY due to over scroll
return Math.max(getTitleHeight() - Math.max(0, mScrollY),
getOverlappingActionModeHeight());
}
private int mCachedOverlappingActionModeHeight = -1;
private int getOverlappingActionModeHeight() {
if (mFindCallback == null) {
return 0;
}
if (mCachedOverlappingActionModeHeight < 0) {
getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset);
mCachedOverlappingActionModeHeight = Math.max(0,
mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top);
}
return mCachedOverlappingActionModeHeight;
}
/*
* 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() - getVisibleTitleHeightImpl();
}
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() {
checkThread();
return mCertificate;
}
/**
* Sets the SSL certificate for the main top-level page.
*/
public void setCertificate(SslCertificate certificate) {
checkThread();
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) {
checkThread();
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) {
checkThread();
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) {
checkThread();
return mDatabase.getHttpAuthUsernamePassword(host, realm);
}
/**
* Remove Find or Select ActionModes, if active.
*/
private void clearActionModes() {
if (mSelectCallback != null) {
mSelectCallback.finish();
}
if (mFindCallback != null) {
mFindCallback.finish();
}
}
/**
* Called to clear state when moving from one page to another, or changing
* in some other way that makes elements associated with the current page
* (such as WebTextView or ActionModes) no longer relevant.
*/
private void clearHelpers() {
clearTextEntry();
clearActionModes();
dismissFullScreenMode();
cancelSelectDialog();
}
private void cancelSelectDialog() {
if (mListBoxDialog != null) {
mListBoxDialog.cancel();
mListBoxDialog = null;
}
}
/**
* 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() {
checkThread();
destroyImpl();
}
private void destroyImpl() {
clearHelpers();
if (mListBoxDialog != null) {
mListBoxDialog.dismiss();
mListBoxDialog = null;
}
// remove so that it doesn't cause events
if (mWebTextView != null) {
mWebTextView.remove();
mWebTextView = null;
}
if (mNativeClass != 0) nativeStopGL();
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.
* Notifications are enabled by default.
*
* @deprecated This method is now obsolete.
*/
@Deprecated
public static void enablePlatformNotifications() {
checkThread();
synchronized (WebView.class) {
Network.enablePlatformNotifications();
sNotificationsEnabled = true;
Context context = JniUtil.getContext();
if (context != null)
setupProxyListener(context);
}
}
/**
* Disables platform notifications of data state and proxy changes.
* Notifications are enabled by default.
*
* @deprecated This method is now obsolete.
*/
@Deprecated
public static void disablePlatformNotifications() {
checkThread();
synchronized (WebView.class) {
Network.disablePlatformNotifications();
sNotificationsEnabled = false;
Context context = JniUtil.getContext();
if (context != null)
disableProxyListener(context);
}
}
/**
* Sets JavaScript engine flags.
*
* @param flags JS engine flags in a String
*
* @hide pending API solidification
*/
public void setJsFlags(String flags) {
checkThread();
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) {
checkThread();
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) {
checkThread();
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) {
checkThread();
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));
}
outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled());
mZoomManager.saveZoomState(outState);
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.
* @deprecated This method is now obsolete.
*/
@Deprecated
public boolean savePicture(Bundle b, final File dest) {
checkThread();
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() {
FileOutputStream out = null;
try {
out = new FileOutputStream(temp);
p.writeToStream(out);
// 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 {
if (out != null) {
try {
out.close();
} catch (Exception e) {
// Can't do anything about that
}
}
temp.delete();
}
}
}).start();
// now update the bundle
b.putInt("scrollX", mScrollX);
b.putInt("scrollY", mScrollY);
mZoomManager.saveZoomState(b);
return true;
}
private void restoreHistoryPictureFields(Picture p, Bundle b) {
int sx = b.getInt("scrollX", 0);
int sy = b.getInt("scrollY", 0);
mDrawHistory = true;
mHistoryPicture = p;
mScrollX = sx;
mScrollY = sy;
mZoomManager.restoreZoomState(b);
final float scale = mZoomManager.getScale();
mHistoryWidth = Math.round(p.getWidth() * scale);
mHistoryHeight = Math.round(p.getHeight() * scale);
invalidate();
}
/**
* Restore the display data that was save in {@link #savePicture}. Used in
* conjunction with {@link #restoreState}.
*
* Note that this will not work if the WebView is hardware accelerated.
* @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.
* @deprecated This method is now obsolete.
*/
@Deprecated
public boolean restorePicture(Bundle b, File src) {
checkThread();
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() {
try {
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);
}
});
}
} finally {
try {
in.close();
} catch (Exception e) {
// Nothing we can do now.
}
}
}
}).start();
} catch (FileNotFoundException e){
e.printStackTrace();
}
return true;
}
/**
* Saves the view data to the output stream. The output is highly
* version specific, and may not be able to be loaded by newer versions
* of WebView.
* @param stream The {@link OutputStream} to save to
* @return True if saved successfully
* @hide
*/
public boolean saveViewState(OutputStream stream) {
try {
return ViewStateSerializer.serializeViewState(stream, this);
} catch (IOException e) {
Log.w(LOGTAG, "Failed to saveViewState", e);
}
return false;
}
/**
* Loads the view data from the input stream. See
* {@link #saveViewState(OutputStream)} for more information.
* @param stream The {@link InputStream} to load from
* @return True if loaded successfully
* @hide
*/
public boolean loadViewState(InputStream stream) {
try {
mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this);
mBlockWebkitViewMessages = true;
setNewPicture(mLoadedPicture, true);
mLoadedPicture.mViewState = null;
return true;
} catch (IOException e) {
Log.w(LOGTAG, "Failed to loadViewState", e);
}
return false;
}
/**
* Clears the view state set with {@link #loadViewState(InputStream)}.
* This WebView will then switch to showing the content from webkit
* @hide
*/
public void clearViewState() {
mBlockWebkitViewMessages = false;
mLoadedPicture = null;
invalidate();
}
/**
* 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) {
checkThread();
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);
}
// Restore private browsing setting.
if (inState.getBoolean("privateBrowsingEnabled")) {
getSettings().setPrivateBrowsingEnabled(true);
}
mZoomManager.restoreZoomState(inState);
// 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 specified additional HTTP headers.
* @param url The URL of the resource to load.
* @param additionalHttpHeaders The additional headers to be used in the
* HTTP request for this URL, specified as a map from name to
* value. Note that if this map contains any of the headers
* that are set by default by the WebView, such as those
* controlling caching, accept types or the User-Agent, their
* values may be overriden by the WebView's defaults.
*/
public void loadUrl(String url, Map<String, String> additionalHttpHeaders) {
checkThread();
loadUrlImpl(url, additionalHttpHeaders);
}
private void loadUrlImpl(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);
clearHelpers();
}
/**
* Load the given URL.
* @param url The URL of the resource to load.
*/
public void loadUrl(String url) {
checkThread();
loadUrlImpl(url);
}
private void loadUrlImpl(String url) {
if (url == null) {
return;
}
loadUrlImpl(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) {
checkThread();
if (URLUtil.isNetworkUrl(url)) {
switchOutDrawHistory();
WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData();
arg.mUrl = url;
arg.mPostData = postData;
mWebViewCore.sendMessage(EventHub.POST_URL, arg);
clearHelpers();
} else {
loadUrlImpl(url);
}
}
/**
* Load the given data into the WebView using a 'data' scheme URL.
* <p>
* Note that JavaScript's same origin policy means that script running in a
* page loaded using this method will be unable to access content loaded
* using any scheme other than 'data', including 'http(s)'. To avoid this
* restriction, use {@link
* #loadDataWithBaseURL(String,String,String,String,String)
* loadDataWithBaseURL()} with an appropriate base URL.
* <p>
* If the value of the encoding parameter is 'base64', then the data must
* be encoded as base64. Otherwise, the data must use ASCII encoding for
* octets inside the range of safe URL characters and use the standard %xx
* hex encoding of URLs for octets outside that range. For example,
* '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively.
* <p>
* The 'data' scheme URL formed by this method uses the default US-ASCII
* charset. If you need need to set a different charset, you should form a
* 'data' scheme URL which explicitly specifies a charset parameter in the
* mediatype portion of the URL and call {@link #loadUrl(String)} instead.
* Note that the charset obtained from the mediatype portion of a data URL
* always overrides that specified in the HTML or XML document itself.
* @param data A String of data in the given encoding.
* @param mimeType The MIME type of the data, e.g. 'text/html'.
* @param encoding The encoding of the data.
*/
public void loadData(String data, String mimeType, String encoding) {
checkThread();
loadDataImpl(data, mimeType, encoding);
}
private void loadDataImpl(String data, String mimeType, String encoding) {
StringBuilder dataUrl = new StringBuilder("data:");
dataUrl.append(mimeType);
if ("base64".equals(encoding)) {
dataUrl.append(";base64");
}
dataUrl.append(",");
dataUrl.append(data);
loadUrlImpl(dataUrl.toString());
}
/**
* Load the given data into the WebView, using baseUrl as the base URL for
* the content. The base URL is used both to resolve relative URLs and when
* applying JavaScript's same origin policy. The historyUrl is used for the
* history entry.
* <p>
* Note that content specified in this way can access local device files
* (via 'file' scheme URLs) only if baseUrl specifies a scheme other than
* 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'.
* <p>
* If the base URL uses the data scheme, this method is equivalent to
* calling {@link #loadData(String,String,String) loadData()} and the
* historyUrl is ignored.
* @param baseUrl URL to use as the page's base URL. If null defaults to
* 'about:blank'
* @param data A String of data in the given encoding.
* @param mimeType The MIMEType of the data, e.g. 'text/html'. If null,
* defaults to 'text/html'.
* @param encoding The encoding of the data.
* @param historyUrl URL to use as the history entry, if null defaults to
* 'about:blank'.
*/
public void loadDataWithBaseURL(String baseUrl, String data,
String mimeType, String encoding, String historyUrl) {
checkThread();
if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) {
loadDataImpl(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);
clearHelpers();
}
/**
* Saves the current view as a web archive.
*
* @param filename The filename where the archive should be placed.
*/
public void saveWebArchive(String filename) {
checkThread();
saveWebArchiveImpl(filename, false, null);
}
/* package */ static class SaveWebArchiveMessage {
SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) {
mBasename = basename;
mAutoname = autoname;
mCallback = callback;
}
/* package */ final String mBasename;
/* package */ final boolean mAutoname;
/* package */ final ValueCallback<String> mCallback;
/* package */ String mResultFile;
}
/**
* Saves the current view as a web archive.
*
* @param basename The filename where the archive should be placed.
* @param autoname If false, takes basename to be a file. If true, basename
* is assumed to be a directory in which a filename will be
* chosen according to the url of the current page.
* @param callback Called after the web archive has been saved. The
* parameter for onReceiveValue will either be the filename
* under which the file was saved, or null if saving the
* file failed.
*/
public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) {
checkThread();
saveWebArchiveImpl(basename, autoname, callback);
}
private void saveWebArchiveImpl(String basename, boolean autoname,
ValueCallback<String> callback) {
mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE,
new SaveWebArchiveMessage(basename, autoname, callback));
}
/**
* Stop the current load.
*/
public void stopLoading() {
checkThread();
// 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() {
checkThread();
clearHelpers();
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() {
checkThread();
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() {
checkThread();
goBackOrForwardImpl(-1);
}
/**
* Return true if this WebView has a forward history item.
* @return True iff this Webview has a forward history item.
*/
public boolean canGoForward() {
checkThread();
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() {
checkThread();
goBackOrForwardImpl(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) {
checkThread();
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) {
checkThread();
goBackOrForwardImpl(steps);
}
private void goBackOrForwardImpl(int steps) {
goBackOrForward(steps, false);
}
private void goBackOrForward(int steps, boolean ignoreSnapshot) {
if (steps != 0) {
clearHelpers();
mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps,
ignoreSnapshot ? 1 : 0);
}
}
/**
* Returns true if private browsing is enabled in this WebView.
*/
public boolean isPrivateBrowsingEnabled() {
checkThread();
return getSettings().isPrivateBrowsingEnabled();
}
private void startPrivateBrowsing() {
getSettings().setPrivateBrowsingEnabled(true);
}
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) {
checkThread();
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;
}
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) {
checkThread();
if (mNativeClass == 0) {
return false;
}
nativeClearCursor(); // start next trackball movement from page edge
if (bottom) {
return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0);
}
// Page down.
int h = getHeight();
int y;
if (h > 2 * PAGE_SCROLL_OVERLAP) {
y = h - PAGE_SCROLL_OVERLAP;
} else {
y = h / 2;
}
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() {
checkThread();
mContentWidth = 0;
mContentHeight = 0;
setBaseLayer(0, null, false, false, false);
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() {
checkThread();
if (mNativeClass == 0) return null;
Picture result = new Picture();
nativeCopyBaseContentToPicture(result);
return result;
}
/**
* Return true if the browser is displaying a TextView for text input.
*/
private boolean inEditingMode() {
return mWebTextView != null && mWebTextView.getParent() != null;
}
/**
* Remove the WebTextView.
*/
private void clearTextEntry() {
if (inEditingMode()) {
mWebTextView.remove();
} else {
// The keyboard may be open with the WebView as the served view
hideSoftKeyboard();
}
}
/**
* Return the current scale of the WebView
* @return The current scale.
*/
public float getScale() {
checkThread();
return mZoomManager.getScale();
}
// Called by JNI. Returns the scale to apply to the text selection handles
/* package */ float getTextHandleScale() {
float density = mContext.getResources().getDisplayMetrics().density;
return density / getScale();
}
/**
* Return the reading level scale of the WebView
* @return The reading level scale.
*/
/*package*/ float getReadingLevelScale() {
return mZoomManager.getReadingLevelScale();
}
/**
* 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 with this value as initial scale.
* Please note that unlike the scale properties in the viewport meta tag,
* this method doesn't take the screen density into account.
*
* @param scaleInPercent The initial scale in percent.
*/
public void setInitialScale(int scaleInPercent) {
checkThread();
mZoomManager.setInitialScaleInPercent(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() {
checkThread();
if (!getSettings().supportZoom()) {
Log.w(LOGTAG, "This WebView doesn't support zoom.");
return;
}
clearHelpers();
mZoomManager.invokeZoomPicker();
}
/**
* 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() {
checkThread();
return hitTestResult(mInitialHitTestResult);
}
private HitTestResult hitTestResult(HitTestResult fallback) {
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);
}
}
}
} else if (fallback != null) {
/* If webkit causes a rebuild while the long press is in progress,
* the cursor node may be reset, even if it is still around. This
* uses the cursor node saved when the touch began. Since the
* nativeImageURI below only changes the result if it is successful,
* this uses the data beneath the touch if available or the original
* tap data otherwise.
*/
Log.v(LOGTAG, "hitTestResult use fallback");
result = fallback;
}
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(mLastTouchX + mScrollX);
int contentY = viewToContentY(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 anchor or image element URL at the last tapped point.
* If hrefMsg is null, this method returns immediately and does not
* dispatch hrefMsg to its target. If the tapped point hits an image,
* an anchor, or an image in an anchor, the message associates
* strings in named keys in its data. The value paired with the key
* may be an empty string.
*
* @param hrefMsg This message will be dispatched with the result of the
* request. The message data contains three keys:
* - "url" returns the anchor's href attribute.
* - "title" returns the anchor's text.
* - "src" returns the image's src attribute.
*/
public void requestFocusNodeHref(Message hrefMsg) {
checkThread();
if (hrefMsg == null) {
return;
}
int contentX = viewToContentX(mLastTouchX + mScrollX);
int contentY = viewToContentY(mLastTouchY + mScrollY);
if (nativeHasCursorNode()) {
Rect cursorBounds = nativeGetCursorRingBounds();
if (!cursorBounds.contains(contentX, contentY)) {
int slop = viewToContentDimension(mNavSlop);
cursorBounds.inset(-slop, -slop);
if (cursorBounds.contains(contentX, contentY)) {
contentX = (int) cursorBounds.centerX();
contentY = (int) cursorBounds.centerY();
}
}
}
mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF,
contentX, contentY, 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) {
checkThread();
if (0 == mNativeClass) return; // client isn't initialized
int contentX = viewToContentX(mLastTouchX + mScrollX);
int contentY = viewToContentY(mLastTouchY + mScrollY);
String ref = nativeImageURI(contentX, contentY);
Bundle data = msg.getData();
data.putString("url", ref);
msg.setData(data);
msg.sendToTarget();
}
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
int pinLocX(int x) {
if (mInOverScrollMode) return x;
return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange());
}
// Expects y in view coordinates
int pinLocY(int y) {
if (mInOverScrollMode) return y;
return pinLoc(y, getViewHeightWithTitle(),
computeRealVerticalScrollRange() + getTitleHeight());
}
/**
* A title bar which is embedded in this WebView, and scrolls along with it
* vertically, but not horizontally.
*/
private View mTitleBar;
/**
* the title bar rendering gravity
*/
private int mTitleGravity;
/**
* 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));
}
mTitleBar = v;
}
/**
* Set where to render the embedded title bar
* NO_GRAVITY at the top of the page
* TOP at the top of the screen
* @hide
*/
public void setTitleBarGravity(int gravity) {
mTitleGravity = gravity;
// force refresh
invalidate();
}
/**
* 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 * mZoomManager.getInvScale());
}
/**
* 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 * mZoomManager.getInvScale();
}
/**
* 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()) * mZoomManager.getInvScale();
}
/**
* 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 * mZoomManager.getScale());
}
/**
* 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 = mZoomManager.getScale();
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 = mZoomManager.getScale();
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
updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY));
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);
}
// Used to avoid sending many visible rect messages.
private Rect mLastVisibleRectSent = new Rect();
private Rect mLastGlobalRect = new Rect();
private Rect mVisibleRect = new Rect();
private Rect mGlobalVisibleRect = new Rect();
private Point mScrollOffset = new Point();
Rect sendOurVisibleRect() {
if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent;
calcOurContentVisibleRect(mVisibleRect);
// Rect.equals() checks for null input.
if (!mVisibleRect.equals(mLastVisibleRectSent)) {
if (!mBlockWebkitViewMessages) {
mScrollOffset.set(mVisibleRect.left, mVisibleRect.top);
mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET);
mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET,
nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset);
}
mLastVisibleRectSent.set(mVisibleRect);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
}
if (getGlobalVisibleRect(mGlobalVisibleRect)
&& !mGlobalVisibleRect.equals(mLastGlobalRect)) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + ","
+ mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b="
+ mGlobalVisibleRect.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.
if (!mBlockWebkitViewMessages) {
mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect);
}
mLastGlobalRect.set(mGlobalVisibleRect);
}
return mVisibleRect;
}
private Point mGlobalVisibleOffset = new Point();
// Sets r to be the visible rectangle of our webview in view coordinates
private void calcOurVisibleRect(Rect r) {
getGlobalVisibleRect(r, mGlobalVisibleOffset);
r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y);
}
// Sets r to be our visible rectangle in content coordinates
private void calcOurContentVisibleRect(Rect r) {
calcOurVisibleRect(r);
r.left = viewToContentX(r.left);
// 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 = viewToContentY(r.top + getVisibleTitleHeightImpl());
r.right = viewToContentX(r.right);
r.bottom = viewToContentY(r.bottom);
}
private Rect mContentVisibleRect = new Rect();
// 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) {
calcOurVisibleRect(mContentVisibleRect);
r.left = viewToContentXf(mContentVisibleRect.left);
// 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 = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl());
r.right = viewToContentXf(mContentVisibleRect.right);
r.bottom = viewToContentYf(mContentVisibleRect.bottom);
}
static class ViewSizeData {
int mWidth;
int mHeight;
float mHeightWidthRatio;
int mActualViewHeight;
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 as new viewport)
*
* @param force ensures that the message is sent to webkit even if the width
* or height has not changed since the last message
*
* @return true if new values were sent
*/
boolean sendViewSizeZoom(boolean force) {
if (mBlockWebkitViewMessages) return false;
if (mZoomManager.isPreventingWebkitUpdates()) return false;
int viewWidth = getViewWidth();
int newWidth = Math.round(viewWidth * mZoomManager.getInvScale());
// This height could be fixed and be different from actual visible height.
int viewHeight = getViewHeightWithTitle() - getTitleHeight();
int newHeight = Math.round(viewHeight * mZoomManager.getInvScale());
// Make the ratio more accurate than (newHeight / newWidth), since the
// latter both are calculated and rounded.
float heightWidthRatio = (float) viewHeight / viewWidth;
/*
* 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;
heightWidthRatio = 0;
}
// Actual visible content height.
int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale());
// Avoid sending another message if the dimensions have not changed.
if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force ||
actualViewHeight != mLastActualHeightSent) {
ViewSizeData data = new ViewSizeData();
data.mWidth = newWidth;
data.mHeight = newHeight;
data.mHeightWidthRatio = heightWidthRatio;
data.mActualViewHeight = actualViewHeight;
data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale());
data.mScale = mZoomManager.getScale();
data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress()
&& !mHeightCanMeasure;
data.mAnchorX = mZoomManager.getDocumentAnchorX();
data.mAnchorY = mZoomManager.getDocumentAnchorY();
mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data);
mLastWidthSent = newWidth;
mLastHeightSent = newHeight;
mLastActualHeightSent = actualViewHeight;
mZoomManager.clearDocumentAnchor();
return true;
}
return false;
}
/**
* Update the double-tap zoom.
*/
/* package */ void updateDoubleTapZoom(int doubleTapZoom) {
mZoomManager.updateDoubleTapZoom(doubleTapZoom);
}
private int computeRealHorizontalScrollRange() {
if (mDrawHistory) {
return mHistoryWidth;
} else {
// to avoid rounding error caused unnecessary scrollbar, use floor
return (int) Math.floor(mContentWidth * mZoomManager.getScale());
}
}
@Override
protected int computeHorizontalScrollRange() {
int range = computeRealHorizontalScrollRange();
// Adjust reported range if overscrolled to compress the scroll bars
final int scrollX = mScrollX;
final int overscrollRight = computeMaxScrollX();
if (scrollX < 0) {
range -= scrollX;
} else if (scrollX > overscrollRight) {
range += scrollX - overscrollRight;
}
return range;
}
@Override
protected int computeHorizontalScrollOffset() {
return Math.max(mScrollX, 0);
}
private int computeRealVerticalScrollRange() {
if (mDrawHistory) {
return mHistoryHeight;
} else {
// to avoid rounding error caused unnecessary scrollbar, use floor
return (int) Math.floor(mContentHeight * mZoomManager.getScale());
}
}
@Override
protected int computeVerticalScrollRange() {
int range = computeRealVerticalScrollRange();
// Adjust reported range if overscrolled to compress the scroll bars
final int scrollY = mScrollY;
final int overscrollBottom = computeMaxScrollY();
if (scrollY < 0) {
range -= scrollY;
} else if (scrollY > overscrollBottom) {
range += scrollY - overscrollBottom;
}
return range;
}
@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) {
if (mScrollY < 0) {
t -= mScrollY;
}
scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b);
scrollBar.draw(canvas);
}
@Override
protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX,
boolean clampedY) {
// Special-case layer scrolling so that we do not trigger normal scroll
// updating.
if (mTouchMode == TOUCH_DRAG_LAYER_MODE) {
scrollLayerTo(scrollX, scrollY);
return;
}
mInOverScrollMode = false;
int maxX = computeMaxScrollX();
int maxY = computeMaxScrollY();
if (maxX == 0) {
// do not over scroll x if the page just fits the screen
scrollX = pinLocX(scrollX);
} else if (scrollX < 0 || scrollX > maxX) {
mInOverScrollMode = true;
}
if (scrollY < 0 || scrollY > maxY) {
mInOverScrollMode = true;
}
int oldX = mScrollX;
int oldY = mScrollY;
super.scrollTo(scrollX, scrollY);
if (mOverScrollGlow != null) {
mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY);
}
}
/**
* 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() {
checkThread();
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() {
checkThread();
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() {
checkThread();
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() {
checkThread();
WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();
return h != null ? h.getFavicon() : null;
}
/**
* Get the touch icon url for the apple-touch-icon <link> element, or
* a URL on this site's server pointing to the standard location of a
* touch icon.
* @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() {
checkThread();
return mCallbackProxy.getProgress();
}
/**
* @return the height of the HTML content.
*/
public int getContentHeight() {
checkThread();
return mContentHeight;
}
/**
* @return the width of the HTML content.
* @hide
*/
public int getContentWidth() {
return mContentWidth;
}
/**
* @hide
*/
public int getPageBackgroundColor() {
return nativeGetBackgroundColor();
}
/**
* 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() {
checkThread();
mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS);
}
/**
* Resume all layout, parsing, and JavaScript timers for all webviews.
* This will resume dispatching all timers.
*/
public void resumeTimers() {
checkThread();
mWebViewCore.sendMessage(EventHub.RESUME_TIMERS);
}
/**
* Call this to pause any extra processing associated with this WebView and
* its associated DOM, plugins, JavaScript etc. For example, if the WebView
* is taken offscreen, this could be called to reduce unnecessary CPU or
* network traffic. When the WebView is again "active", call onResume().
*
* Note that this differs from pauseTimers(), which affects all WebViews.
*/
public void onPause() {
checkThread();
if (!mIsPaused) {
mIsPaused = true;
mWebViewCore.sendMessage(EventHub.ON_PAUSE);
// We want to pause the current playing video when switching out
// from the current WebView/tab.
if (mHTML5VideoViewProxy != null) {
mHTML5VideoViewProxy.pauseAndDispatch();
}
if (mNativeClass != 0) {
nativeSetPauseDrawing(mNativeClass, true);
}
cancelSelectDialog();
}
}
@Override
protected void onWindowVisibilityChanged(int visibility) {
super.onWindowVisibilityChanged(visibility);
updateDrawingState();
}
void updateDrawingState() {
if (mNativeClass == 0 || mIsPaused) return;
if (getWindowVisibility() != VISIBLE) {
nativeSetPauseDrawing(mNativeClass, true);
} else if (getVisibility() != VISIBLE) {
nativeSetPauseDrawing(mNativeClass, true);
} else {
nativeSetPauseDrawing(mNativeClass, false);
}
}
/**
* Call this to resume a WebView after a previous call to onPause().
*/
public void onResume() {
checkThread();
if (mIsPaused) {
mIsPaused = false;
mWebViewCore.sendMessage(EventHub.ON_RESUME);
if (mNativeClass != 0) {
nativeSetPauseDrawing(mNativeClass, false);
}
}
}
/**
* 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() {
checkThread();
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) {
checkThread();
// 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() {
checkThread();
if (inEditingMode()) {
mWebTextView.setAdapterCustom(null);
}
}
/**
* Tell the WebView to clear its internal back/forward list.
*/
public void clearHistory() {
checkThread();
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() {
checkThread();
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() {
checkThread();
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) {
checkThread();
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) {
checkThread();
if (0 == mNativeClass) return 0; // client isn't initialized
int result = find != null ? nativeFindAll(find.toLowerCase(),
find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0;
invalidate();
mLastFind = find;
return result;
}
/**
* Start an ActionMode for finding text in this WebView. Only works if this
* WebView is attached to the view system.
* @param text If non-null, will be the initial text to search for.
* Otherwise, the last String searched for in this WebView will
* be used to start.
* @param showIme If true, show the IME, assuming the user will begin typing.
* If false and text is non-null, perform a find all.
* @return boolean True if the find dialog is shown, false otherwise.
*/
public boolean showFindDialog(String text, boolean showIme) {
checkThread();
FindActionModeCallback callback = new FindActionModeCallback(mContext);
if (getParent() == null || startActionMode(callback) == null) {
// Could not start the action mode, so end Find on page
return false;
}
mCachedOverlappingActionModeHeight = -1;
mFindCallback = callback;
setFindIsUp(true);
mFindCallback.setWebView(this);
if (showIme) {
mFindCallback.showSoftInput();
} else if (text != null) {
mFindCallback.setText(text);
mFindCallback.findAll();
return true;
}
if (text == null) {
text = mLastFind;
}
if (text != null) {
mFindCallback.setText(text);
}
return true;
}
/**
* Keep track of the find callback so that we can remove its titlebar if
* necessary.
*/
private FindActionModeCallback mFindCallback;
/**
* Toggle whether the find dialog is showing, for both native and Java.
*/
private void setFindIsUp(boolean isUp) {
mFindIsUp = isUp;
if (0 == mNativeClass) return; // client isn't initialized
nativeSetFindIsUp(isUp);
}
/**
* Return the index of the currently highlighted match.
*/
int findIndex() {
if (0 == mNativeClass) return -1;
return nativeFindIndex();
}
// Used to know whether the find dialog is open. Affects whether
// or not we draw the highlights for matches.
private boolean mFindIsUp;
// Keep track of the last string sent, so we can search again when find is
// reopened.
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) {
checkThread();
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() {
checkThread();
if (mNativeClass == 0)
return;
nativeSetFindIsEmpty();
invalidate();
}
/**
* Called when the find ActionMode ends.
*/
void notifyFindDialogDismissed() {
mFindCallback = null;
mCachedOverlappingActionModeHeight = -1;
if (mWebViewCore == null) {
return;
}
clearMatches();
setFindIsUp(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();
}
/**
* 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) {
checkThread();
if (response == null) {
return;
}
mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response);
}
/**
* Request the scroller to abort any ongoing animation
*
* @hide
*/
public void stopScroll() {
mScroller.forceFinished(true);
mLastVelocity = 0;
}
@Override
public void computeScroll() {
if (mScroller.computeScrollOffset()) {
int oldX = mScrollX;
int oldY = mScrollY;
int x = mScroller.getCurrX();
int y = mScroller.getCurrY();
invalidate(); // So we draw again
if (!mScroller.isFinished()) {
int rangeX = computeMaxScrollX();
int rangeY = computeMaxScrollY();
int overflingDistance = mOverflingDistance;
// Use the layer's scroll data if needed.
if (mTouchMode == TOUCH_DRAG_LAYER_MODE) {
oldX = mScrollingLayerRect.left;
oldY = mScrollingLayerRect.top;
rangeX = mScrollingLayerRect.right;
rangeY = mScrollingLayerRect.bottom;
// No overscrolling for layers.
overflingDistance = 0;
}
overScrollBy(x - oldX, y - oldY, oldX, oldY,
rangeX, rangeY,
overflingDistance, overflingDistance, false);
if (mOverScrollGlow != null) {
mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY);
}
} else {
if (mTouchMode != TOUCH_DRAG_LAYER_MODE) {
mScrollX = x;
mScrollY = y;
} else {
// Update the layer position instead of WebView.
scrollLayerTo(x, y);
}
abortAnimation();
nativeSetIsScrolling(false);
if (!mBlockWebkitViewMessages) {
WebViewCore.resumePriority();
if (!mSelectingText) {
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
}
if (oldX != mScrollX || oldY != mScrollY) {
sendOurVisibleRect();
}
}
} else {
super.computeScroll();
}
}
private void scrollLayerTo(int x, int y) {
if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) {
return;
}
nativeScrollLayer(mCurrentScrollingLayerId, x, y);
mScrollingLayerRect.left = x;
mScrollingLayerRect.top = y;
onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY);
invalidate();
}
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;
}
abortAnimation();
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 {
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 starts loading.
* @param url The URL of the page which has started loading.
*/
/* package */ void onPageStarted(String url) {
// every time we start a new page, we want to reset the
// WebView certificate: if the new site is secure, we
// will reload it and get a new certificate set;
// if the new site is not secure, the certificate must be
// null, and that will be the case
setCertificate(null);
// reset the flag since we set to true in if need after
// loading is see onPageFinished(Url)
mAccessibilityScriptInjected = false;
}
/**
* 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;
}
mZoomManager.onPageFinished(url);
injectAccessibilityForUrl(url);
}
/**
* This method injects accessibility in the loaded document if accessibility
* is enabled. If JavaScript is enabled we try to inject a URL specific script.
* If no URL specific script is found or JavaScript is disabled we fallback to
* the default {@link AccessibilityInjector} implementation.
* </p>
* If the URL has the "axs" paramter set to 1 it has already done the
* script injection so we do nothing. If the parameter is set to 0
* the URL opts out accessibility script injection so we fall back to
* the default {@link AccessibilityInjector}.
* </p>
* Note: If the user has not opted-in the accessibility script injection no scripts
* are injected rather the default {@link AccessibilityInjector} implementation
* is used.
*
* @param url The URL loaded by this {@link WebView}.
*/
private void injectAccessibilityForUrl(String url) {
if (mWebViewCore == null) {
return;
}
AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext);
if (!accessibilityManager.isEnabled()) {
// it is possible that accessibility was turned off between reloads
ensureAccessibilityScriptInjectorInstance(false);
return;
}
if (!getSettings().getJavaScriptEnabled()) {
// no JS so we fallback to the basic buil-in support
ensureAccessibilityScriptInjectorInstance(true);
return;
}
// check the URL "axs" parameter to choose appropriate action
int axsParameterValue = getAxsUrlParameterValue(url);
if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) {
boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext
.getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1);
if (onDeviceScriptInjectionEnabled) {
ensureAccessibilityScriptInjectorInstance(false);
// neither script injected nor script injection opted out => we inject
loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT);
// TODO: Set this flag after successfull script injection. Maybe upon injection
// the chooser should update the meta tag and we check it to declare success
mAccessibilityScriptInjected = true;
} else {
// injection disabled so we fallback to the basic built-in support
ensureAccessibilityScriptInjectorInstance(true);
}
} else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) {
// injection opted out so we fallback to the basic buil-in support
ensureAccessibilityScriptInjectorInstance(true);
} else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) {
ensureAccessibilityScriptInjectorInstance(false);
// the URL provides accessibility but we still need to add our generic script
loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT);
} else {
Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue);
}
}
/**
* Ensures the instance of the {@link AccessibilityInjector} to be present ot not.
*
* @param present True to ensure an insance, false to ensure no instance.
*/
private void ensureAccessibilityScriptInjectorInstance(boolean present) {
if (present) {
if (mAccessibilityInjector == null) {
mAccessibilityInjector = new AccessibilityInjector(this);
}
} else {
mAccessibilityInjector = null;
}
}
/**
* Gets the "axs" URL parameter value.
*
* @param url A url to fetch the paramter from.
* @return The parameter value if such, -1 otherwise.
*/
private int getAxsUrlParameterValue(String url) {
if (mMatchAxsUrlParameterPattern == null) {
mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER);
}
Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url);
if (matcher.find()) {
String keyValuePair = url.substring(matcher.start(), matcher.end());
return Integer.parseInt(keyValuePair.split("=")[1]);
}
return -1;
}
/**
* 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(false);
}
}
/**
* 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) {
checkThread();
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) {
checkThread();
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) {
checkThread();
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.
* @deprecated This method is now obsolete.
*/
@Deprecated
public void setPictureListener(PictureListener listener) {
checkThread();
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, null instances are
* ignored.
* @param interfaceName The name to used to expose the instance in
* JavaScript.
*/
public void addJavascriptInterface(Object obj, String interfaceName) {
checkThread();
if (obj == null) {
return;
}
WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData();
arg.mObject = obj;
arg.mInterfaceName = interfaceName;
mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg);
}
/**
* Removes a previously added JavaScript interface with the given name.
* @param interfaceName The name of the interface to remove.
*/
public void removeJavascriptInterface(String interfaceName) {
checkThread();
if (mWebViewCore != null) {
WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData();
arg.mInterfaceName = interfaceName;
mWebViewCore.sendMessage(EventHub.REMOVE_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() {
checkThread();
return (mWebViewCore != null) ? mWebViewCore.getSettings() : null;
}
/**
* Return the list of currently loaded plugins.
* @return The list of currently loaded plugins.
*
* @hide
* @deprecated This was used for Gears, which has been deprecated.
*/
@Deprecated
public static synchronized PluginList getPluginList() {
checkThread();
return new PluginList();
}
/**
* @hide
* @deprecated This was used for Gears, which has been deprecated.
*/
@Deprecated
public void refreshPlugins(boolean reloadOpenPages) {
checkThread();
}
//-------------------------------------------------------------------------
// Override View methods
//-------------------------------------------------------------------------
@Override
protected void finalize() throws Throwable {
try {
if (mNativeClass != 0) {
mPrivateHandler.post(new Runnable() {
@Override
public void run() {
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());
int newTop = 0;
if (mTitleGravity == Gravity.NO_GRAVITY) {
newTop = Math.min(0, mScrollY);
} else if (mTitleGravity == Gravity.TOP) {
newTop = mScrollY;
}
mTitleBar.setBottom(newTop + mTitleBar.getHeight());
mTitleBar.setTop(newTop);
}
return super.drawChild(canvas, child, drawingTime);
}
private void drawContent(Canvas canvas, boolean drawRings) {
drawCoreAndCursorRing(canvas, mBackgroundColor,
mDrawCursorRing && drawRings);
}
/**
* Draw the background when beyond bounds
* @param canvas Canvas to draw into
*/
private void drawOverScrollBackground(Canvas canvas) {
if (mOverScrollBackground == null) {
mOverScrollBackground = new Paint();
Bitmap bm = BitmapFactory.decodeResource(
mContext.getResources(),
com.android.internal.R.drawable.status_bar_background);
mOverScrollBackground.setShader(new BitmapShader(bm,
Shader.TileMode.REPEAT, Shader.TileMode.REPEAT));
mOverScrollBorder = new Paint();
mOverScrollBorder.setStyle(Paint.Style.STROKE);
mOverScrollBorder.setStrokeWidth(0);
mOverScrollBorder.setColor(0xffbbbbbb);
}
int top = 0;
int right = computeRealHorizontalScrollRange();
int bottom = top + computeRealVerticalScrollRange();
// first draw the background and anchor to the top of the view
canvas.save();
canvas.translate(mScrollX, mScrollY);
canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom
- mScrollY, Region.Op.DIFFERENCE);
canvas.drawPaint(mOverScrollBackground);
canvas.restore();
// then draw the border
canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder);
// next clip the region for the content
canvas.clipRect(0, top, right, bottom);
}
@Override
protected void onDraw(Canvas canvas) {
// if mNativeClass is 0, the WebView is either destroyed or not
// initialized. In either case, just draw the background color and return
if (mNativeClass == 0) {
canvas.drawColor(mBackgroundColor);
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;
}
if (canvas.isHardwareAccelerated()) {
if (mIncrementEGLContextHack == false) {
mIncrementEGLContextHack = true;
EGL10 egl = (EGL10) EGLContext.getEGL();
EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
int[] version = new int[2];
egl.eglInitialize(eglDisplay, version);
}
mZoomManager.setHardwareAccelerated();
}
int saveCount = canvas.save();
if (mInOverScrollMode && !getSettings()
.getUseWebViewBackgroundForOverscrollBackground()) {
drawOverScrollBackground(canvas);
}
if (mTitleBar != null) {
canvas.translate(0, getTitleHeight());
}
boolean drawJavaRings = !mTouchHighlightRegion.isEmpty()
&& (mTouchMode == TOUCH_INIT_MODE
|| mTouchMode == TOUCH_SHORTPRESS_START_MODE
|| mTouchMode == TOUCH_SHORTPRESS_MODE
|| mTouchMode == TOUCH_DONE_MODE);
boolean drawNativeRings = !drawJavaRings;
if (USE_WEBKIT_RINGS) {
drawNativeRings = !drawJavaRings && !isInTouchMode();
}
drawContent(canvas, drawNativeRings);
canvas.restoreToCount(saveCount);
if (AUTO_REDRAW_HACK && mAutoRedraw) {
invalidate();
}
mWebViewCore.signalRepaintDone();
if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) {
invalidate();
}
// paint the highlight in the end
if (drawJavaRings) {
long delay = System.currentTimeMillis() - mTouchHighlightRequested;
if (delay < ViewConfiguration.getTapTimeout()) {
Rect r = mTouchHighlightRegion.getBounds();
postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom);
} else {
if (mTouchHightlightPaint == null) {
mTouchHightlightPaint = new Paint();
mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR);
}
RegionIterator iter = new RegionIterator(mTouchHighlightRegion);
Rect r = new Rect();
while (iter.next(r)) {
canvas.drawRect(r, mTouchHightlightPaint);
}
}
}
if (DEBUG_TOUCH_HIGHLIGHT) {
if (getSettings().getNavDump()) {
if ((mTouchHighlightX | mTouchHighlightY) != 0) {
if (mTouchCrossHairColor == null) {
mTouchCrossHairColor = new Paint();
mTouchCrossHairColor.setColor(Color.RED);
}
canvas.drawLine(mTouchHighlightX - mNavSlop,
mTouchHighlightY - mNavSlop, mTouchHighlightX
+ mNavSlop + 1, mTouchHighlightY + mNavSlop
+ 1, mTouchCrossHairColor);
canvas.drawLine(mTouchHighlightX + mNavSlop + 1,
mTouchHighlightY - mNavSlop, mTouchHighlightX
- mNavSlop,
mTouchHighlightY + mNavSlop + 1,
mTouchCrossHairColor);
}
}
}
}
private void removeTouchHighlight() {
mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS);
mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS);
setTouchHighlightRects(null);
}
@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;
// A multi-finger gesture can look like a long press; make sure we don't take
// long press actions if we're scaling.
final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector();
if (detector != null && detector.isInProgress()) {
return false;
}
if (mNativeClass != 0 && nativeCursorIsTextInput()) {
// Send the click so that the textfield is in focus
centerKeyPressOnTextField();
rebuildWebTextView();
} else {
clearTextEntry();
}
if (inEditingMode()) {
// Since we just called rebuildWebTextView, the layout is not set
// properly. Update it so it can correctly find the word to select.
mWebTextView.ensureLayout();
// Provide a touch down event to WebTextView, which will allow it
// to store the location to use in performLongClick.
AbsoluteLayout.LayoutParams params
= (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams();
MotionEvent fake = MotionEvent.obtain(mLastTouchTime,
mLastTouchTime, MotionEvent.ACTION_DOWN,
mLastTouchX - params.x + mScrollX,
mLastTouchY - params.y + mScrollY, 0);
mWebTextView.dispatchTouchEvent(fake);
return mWebTextView.performLongClick();
}
if (mSelectingText) return false; // long click does nothing on selection
/* if long click brings up a context menu, the super function
* returns true and we're done. Otherwise, nothing happened when
* the user clicked. */
if (super.performLongClick()) {
return true;
}
/* In the case where the application hasn't already handled the long
* click action, look for a word under the click. If one is found,
* animate the text selection into view.
* FIXME: no animation code yet */
final boolean isSelecting = selectText();
if (isSelecting) {
performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
}
return isSelecting;
}
/**
* Select the word at the last click point.
*
* @hide pending API council approval
*/
public boolean selectText() {
int x = viewToContentX(mLastTouchX + mScrollX);
int y = viewToContentY(mLastTouchY + mScrollY);
return selectText(x, y);
}
/**
* Select the word at the indicated content coordinates.
*/
boolean selectText(int x, int y) {
if (!setUpSelect(true, x, y)) {
return false;
}
nativeSetExtendSelection();
mDrawSelectionPointer = false;
mTouchMode = TOUCH_DRAG_MODE;
return true;
}
private int mOrientation = Configuration.ORIENTATION_UNDEFINED;
@Override
protected void onConfigurationChanged(Configuration newConfig) {
mCachedOverlappingActionModeHeight = -1;
if (mSelectingText && mOrientation != newConfig.orientation) {
selectionDone();
}
mOrientation = newConfig.orientation;
if (mWebViewCore != null && !mBlockWebkitViewMessages) {
mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT);
}
}
/**
* Keep track of the Callback so we can end its ActionMode or remove its
* titlebar.
*/
private SelectActionModeCallback mSelectCallback;
// These values are possible options for didUpdateWebTextViewDimensions.
private static final int FULLY_ON_SCREEN = 0;
private static final int INTERSECTS_SCREEN = 1;
private static final int ANYWHERE = 2;
/**
* Check to see if the focused textfield/textarea is still on screen. If it
* is, update the the dimensions and location of WebTextView. Otherwise,
* remove the WebTextView. Should be called when the zoom level changes.
* @param intersection How to determine whether the textfield/textarea is
* still on screen.
* @return boolean True if the textfield/textarea is still on screen and the
* dimensions/location of WebTextView have been updated.
*/
private boolean didUpdateWebTextViewDimensions(int intersection) {
Rect contentBounds = nativeFocusCandidateNodeBounds();
Rect vBox = contentToViewRect(contentBounds);
Rect visibleRect = new Rect();
calcOurVisibleRect(visibleRect);
offsetByLayerScrollPosition(vBox);
// If the textfield is on screen, place the WebTextView in
// its new place, accounting for our new scroll/zoom values,
// and adjust its textsize.
boolean onScreen;
switch (intersection) {
case FULLY_ON_SCREEN:
onScreen = visibleRect.contains(vBox);
break;
case INTERSECTS_SCREEN:
onScreen = Rect.intersects(visibleRect, vBox);
break;
case ANYWHERE:
onScreen = true;
break;
default:
throw new AssertionError(
"invalid parameter passed to didUpdateWebTextViewDimensions");
}
if (onScreen) {
mWebTextView.setRect(vBox.left, vBox.top, vBox.width(),
vBox.height());
mWebTextView.updateTextSize();
updateWebTextViewPadding();
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 offsetByLayerScrollPosition(Rect box) {
if ((mCurrentScrollingLayerId != 0)
&& (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) {
box.offsetTo(box.left - mScrollingLayerRect.left,
box.top - mScrollingLayerRect.top);
}
}
void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator,
boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) {
if (mNativeClass == 0)
return;
nativeSetBaseLayer(layer, invalRegion, showVisualIndicator,
isPictureAfterFirstLayout, registerPageSwapCallback);
if (mHTML5VideoViewProxy != null) {
mHTML5VideoViewProxy.setBaseLayer(layer);
}
}
int getBaseLayer() {
if (mNativeClass == 0) {
return 0;
}
return nativeGetBaseLayer();
}
private void onZoomAnimationStart() {
// If it is in password mode, turn it off so it does not draw misplaced.
if (inEditingMode()) {
mWebTextView.setVisibility(INVISIBLE);
}
}
private void onZoomAnimationEnd() {
// adjust the edit text view if needed
if (inEditingMode()
&& didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) {
// If it is a password field, start drawing the WebTextView once
// again.
mWebTextView.setVisibility(VISIBLE);
}
}
void onFixedLengthZoomAnimationStart() {
WebViewCore.pauseUpdatePicture(getWebViewCore());
onZoomAnimationStart();
}
void onFixedLengthZoomAnimationEnd() {
if (!mBlockWebkitViewMessages && !mSelectingText) {
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
onZoomAnimationEnd();
}
private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG |
Paint.DITHER_FLAG |
Paint.SUBPIXEL_TEXT_FLAG;
private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG |
Paint.DITHER_FLAG;
private final DrawFilter mZoomFilter =
new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG);
// If we need to trade better quality for speed, set mScrollFilter to null
private final DrawFilter mScrollFilter =
new PaintFlagsDrawFilter(SCROLL_BITS, 0);
private void drawCoreAndCursorRing(Canvas canvas, int color,
boolean drawCursorRing) {
if (mDrawHistory) {
canvas.scale(mZoomManager.getScale(), mZoomManager.getScale());
canvas.drawPicture(mHistoryPicture);
return;
}
if (mNativeClass == 0) return;
boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress();
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);
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(AWAKEN_SCROLL_BARS),
ViewConfiguration.getScrollDefaultDelay());
mHeldMotionless = MOTIONLESS_PENDING;
}
}
int saveCount = canvas.save();
if (animateZoom) {
mZoomManager.animateZoom(canvas);
} else if (!canvas.isHardwareAccelerated()) {
canvas.scale(mZoomManager.getScale(), mZoomManager.getScale());
}
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 && !canvas.isHardwareAccelerated()
&& nativeEvaluateLayersAnimations(mNativeClass)) {
UIAnimationsRunning = true;
// If we have unfinished (or unstarted) animations,
// we ask for a repaint. We only need to do this in software
// rendering (with hardware rendering we already have a different
// method of requesting a repaint)
mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED);
invalidate();
}
// decide which adornments to draw
int extras = DRAW_EXTRAS_NONE;
if (mFindIsUp) {
extras = DRAW_EXTRAS_FIND;
} else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) {
extras = DRAW_EXTRAS_SELECTION;
nativeSetSelectionPointer(mNativeClass,
mDrawSelectionPointer,
mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight());
} else if (drawCursorRing) {
extras = DRAW_EXTRAS_CURSOR_RING;
}
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp
+ " mSelectingText=" + mSelectingText
+ " nativePageShouldHandleShiftAndArrows()="
+ nativePageShouldHandleShiftAndArrows()
+ " animateZoom=" + animateZoom
+ " extras=" + extras);
}
calcOurContentVisibleRectF(mVisibleContentRect);
if (canvas.isHardwareAccelerated()) {
Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport;
Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport;
int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport,
viewRectViewport, mVisibleContentRect, getScale(), extras);
((HardwareCanvas) canvas).callDrawGLFunction(functor);
if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) {
mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled();
nativeUseHardwareAccelSkia(mHardwareAccelSkia);
}
} else {
DrawFilter df = null;
if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) {
df = mZoomFilter;
} else if (animateScroll) {
df = mScrollFilter;
}
canvas.setDrawFilter(df);
// XXX: Revisit splitting content. Right now it causes a
// synchronization problem with layers.
int content = nativeDraw(canvas, mVisibleContentRect, color,
extras, false);
canvas.setDrawFilter(null);
if (!mBlockWebkitViewMessages && content != 0) {
mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0);
}
}
canvas.restoreToCount(saveCount);
if (mSelectingText && USE_JAVA_TEXT_SELECTION) {
drawTextSelectionHandles(canvas);
}
if (extras == DRAW_EXTRAS_CURSOR_RING) {
if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) {
mTouchMode = TOUCH_SHORTPRESS_MODE;
}
}
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. With hardware acceleration, the pageSwapCallback()
// updates the WebTextView position in sync with page swapping
if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) {
didUpdateWebTextViewDimensions(ANYWHERE);
}
}
}
private void drawTextSelectionHandles(Canvas canvas) {
if (mTextSelectionPaint == null) {
mTextSelectionPaint = new Paint();
mTextSelectionPaint.setColor(HIGHLIGHT_COLOR);
}
mTextSelectionRegion.setEmpty();
nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion);
Rect r = new Rect();
RegionIterator iter = new RegionIterator(mTextSelectionRegion);
Rect clip = canvas.getClipBounds();
while (iter.next(r)) {
r.set(contentToViewDimension(r.left),
contentToViewDimension(r.top),
contentToViewDimension(r.right),
contentToViewDimension(r.bottom));
if (r.intersect(clip)) {
canvas.drawRect(r, mTextSelectionPaint);
}
}
if (mSelectHandleLeft == null) {
mSelectHandleLeft = mContext.getResources().getDrawable(
com.android.internal.R.drawable.text_select_handle_left);
}
int[] handles = new int[4];
nativeGetSelectionHandles(mNativeClass, handles);
int start_x = contentToViewDimension(handles[0]);
int start_y = contentToViewDimension(handles[1]);
int end_x = contentToViewDimension(handles[2]);
int end_y = contentToViewDimension(handles[3]);
// Magic formula copied from TextView
start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4;
mSelectHandleLeft.setBounds(start_x, start_y,
start_x + mSelectHandleLeft.getIntrinsicWidth(),
start_y + mSelectHandleLeft.getIntrinsicHeight());
if (mSelectHandleRight == null) {
mSelectHandleRight = mContext.getResources().getDrawable(
com.android.internal.R.drawable.text_select_handle_right);
}
end_x -= mSelectHandleRight.getIntrinsicWidth() / 4;
mSelectHandleRight.setBounds(end_x, end_y,
end_x + mSelectHandleRight.getIntrinsicWidth(),
end_y + mSelectHandleRight.getIntrinsicHeight());
if (DEBUG_TEXT_HANDLES) {
mSelectHandleLeft.setAlpha(125);
mSelectHandleRight.setAlpha(125);
}
mSelectHandleLeft.draw(canvas);
mSelectHandleRight.draw(canvas);
}
// 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;
}
int getHistoryPictureWidth() {
return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0;
}
// Should only be called in UI thread
void switchOutDrawHistory() {
if (null == mWebViewCore) return; // CallbackProxy may trigger this
if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) {
mDrawHistory = false;
mHistoryPicture = null;
invalidate();
int oldScrollX = mScrollX;
int oldScrollY = mScrollY;
mScrollX = pinLocX(mScrollX);
mScrollY = pinLocY(mScrollY);
if (oldScrollX != mScrollX || oldScrollY != mScrollY) {
onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY);
} else {
sendOurVisibleRect();
}
}
}
WebViewCore.CursorData cursorData() {
WebViewCore.CursorData result = cursorDataNoPosition();
Point position = nativeCursorPosition();
result.mX = position.x;
result.mY = position.y;
return result;
}
WebViewCore.CursorData cursorDataNoPosition() {
WebViewCore.CursorData result = new WebViewCore.CursorData();
result.mMoveGeneration = nativeMoveGeneration();
result.mFrame = nativeCursorFramePointer();
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) {
if (mWebViewCore != null) {
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 level scale so that user can enter text
boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale();
if (zoom) {
mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY);
mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false);
}
if (isTextView) {
rebuildWebTextView();
if (inEditingMode()) {
imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver());
if (zoom) {
didUpdateWebTextViewDimensions(INTERSECTS_SCREEN);
}
return;
}
}
// Used by plugins and contentEditable.
// 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.peekInstance();
if (imm != null && (imm.isActive(this)
|| (inEditingMode() && imm.isActive(mWebTextView)))) {
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, mAutoFillData.getQueryId());
// Initialize our generation number.
mTextGeneration = 0;
}
mWebTextView.updateTextSize();
updateWebTextViewPosition();
String text = nativeFocusCandidateText();
int nodePointer = nativeFocusCandidatePointer();
// 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());
// Gravity needs to be set after setType
mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText());
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.clearComposingText();
}
if (isFocused()) {
mWebTextView.requestFocus();
}
}
private void updateWebTextViewPosition() {
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);
offsetByLayerScrollPosition(vBox);
mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height());
if (!Rect.intersects(bounds, visibleRect)) {
revealSelection();
}
updateWebTextViewPadding();
}
/**
* Update the padding of mWebTextView based on the native textfield/textarea
*/
void updateWebTextViewPadding() {
Rect paddingRect = nativeFocusCandidatePaddingRect();
if (paddingRect != null) {
// Use contentToViewDimension since these are the dimensions of
// the padding.
mWebTextView.setPadding(
contentToViewDimension(paddingRect.left),
contentToViewDimension(paddingRect.top),
contentToViewDimension(paddingRect.right),
contentToViewDimension(paddingRect.bottom));
}
}
/**
* Tell webkit to put the cursor on screen.
*/
/* package */ void revealSelection() {
if (mWebViewCore != null) {
mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION);
}
}
/**
* 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.
* @param autoFillable true if WebKit has determined this field is part of
* a form that can be auto filled.
* @param autoComplete true if the attribute "autocomplete" is set to true
* on the textfield.
*/
/* package */ void requestFormData(String name, int nodePointer,
boolean autoFillable, boolean autoComplete) {
if (mWebViewCore.getSettings().getSaveFormData()) {
Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA);
update.arg1 = nodePointer;
RequestFormData updater = new RequestFormData(name, getUrl(),
update, autoFillable, autoComplete);
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;
private boolean mAutoFillable;
private boolean mAutoComplete;
private WebSettings mWebSettings;
public RequestFormData(String name, String url, Message msg,
boolean autoFillable, boolean autoComplete) {
mName = name;
mUrl = WebTextView.urlForAutoCompleteData(url);
mUpdateMessage = msg;
mAutoFillable = autoFillable;
mAutoComplete = autoComplete;
mWebSettings = getSettings();
}
public void run() {
ArrayList<String> pastEntries = new ArrayList<String>();
if (mAutoFillable) {
// Note that code inside the adapter click handler in WebTextView depends
// on the AutoFill item being at the top of the drop down list. If you change
// the order, make sure to do it there too!
if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) {
pastEntries.add(getResources().getText(
com.android.internal.R.string.autofill_this_form).toString() +
" " +
mAutoFillData.getPreviewString());
mWebTextView.setAutoFillProfileIsSet(true);
} else {
// There is no autofill profile set up yet, so add an option that
// will invite the user to set their profile up.
pastEntries.add(getResources().getText(
com.android.internal.R.string.setup_autofill).toString());
mWebTextView.setAutoFillProfileIsSet(false);
}
}
if (mAutoComplete) {
pastEntries.addAll(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);
}
/**
* Called by DRT on UI thread, need to proxy to WebCore thread.
*
* @hide debug only
*/
public void useMockDeviceOrientation() {
mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION);
}
/**
* Called by DRT on WebCore thread.
*
* @hide debug only
*/
public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha,
boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) {
mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta,
canProvideGamma, gamma);
}
/**
* 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 onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
if (mBlockWebkitViewMessages) {
return false;
}
// send complex characters to webkit for use by JS and plugins
if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) {
// pass the key to DOM
mWebViewCore.sendMessage(EventHub.KEY_DOWN, event);
mWebViewCore.sendMessage(EventHub.KEY_UP, event);
// return true as DOM handles the key
return true;
}
return false;
}
private boolean isEnterActionKey(int keyCode) {
return keyCode == KeyEvent.KEYCODE_DPAD_CENTER
|| keyCode == KeyEvent.KEYCODE_ENTER
|| keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis()
+ "keyCode=" + keyCode
+ ", " + event + ", unicode=" + event.getUnicodeChar());
}
if (mBlockWebkitViewMessages) {
return false;
}
// don't implement accelerator keys here; defer to host application
if (event.isCtrlPressed()) {
return false;
}
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;
}
// accessibility support
if (accessibilityScriptInjected()) {
if (AccessibilityManager.getInstance(mContext).isEnabled()) {
// if an accessibility script is injected we delegate to it the key handling.
// this script is a screen reader which is a fully fledged solution for blind
// users to navigate in and interact with web pages.
mWebViewCore.sendMessage(EventHub.KEY_DOWN, event);
return true;
} else {
// Clean up if accessibility was disabled after loading the current URL.
mAccessibilityScriptInjected = false;
}
} else if (mAccessibilityInjector != null) {
if (AccessibilityManager.getInstance(mContext).isEnabled()) {
if (mAccessibilityInjector.onKeyEvent(event)) {
// if an accessibility injector is present (no JavaScript enabled or the site
// opts out injecting our JavaScript screen reader) we let it decide whether
// to act on and consume the event.
return true;
}
} else {
// Clean up if accessibility was disabled after loading the current URL.
mAccessibilityInjector = null;
}
}
if (keyCode == KeyEvent.KEYCODE_PAGE_UP) {
if (event.hasNoModifiers()) {
pageUp(false);
return true;
} else if (event.hasModifiers(KeyEvent.META_ALT_ON)) {
pageUp(true);
return true;
}
}
if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) {
if (event.hasNoModifiers()) {
pageDown(false);
return true;
} else if (event.hasModifiers(KeyEvent.META_ALT_ON)) {
pageDown(true);
return true;
}
}
if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) {
pageUp(true);
return true;
}
if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) {
pageDown(true);
return true;
}
if (keyCode >= KeyEvent.KEYCODE_DPAD_UP
&& keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) {
switchOutDrawHistory();
if (nativePageShouldHandleShiftAndArrows()) {
letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState());
return true;
}
if (event.hasModifiers(KeyEvent.META_ALT_ON)) {
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_UP:
pageUp(true);
return true;
case KeyEvent.KEYCODE_DPAD_DOWN:
pageDown(true);
return true;
case KeyEvent.KEYCODE_DPAD_LEFT:
nativeClearCursor(); // start next trackball movement from page edge
return pinScrollTo(0, mScrollY, true, 0);
case KeyEvent.KEYCODE_DPAD_RIGHT:
nativeClearCursor(); // start next trackball movement from page edge
return pinScrollTo(mContentWidth, mScrollY, true, 0);
}
}
if (mSelectingText) {
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();
boolean wantsKeyEvents = nativeCursorNodePointer() == 0
|| nativeCursorWantsKeyEvents();
if (event.getRepeatCount() == 0) {
if (mSelectingText) {
return true; // discard press if copy in progress
}
mGotCenterDown = true;
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT);
if (!wantsKeyEvents) return true;
}
// Bubble up the key event as WebView doesn't handle it
if (!wantsKeyEvents) return false;
}
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.
mWebViewCore.sendMessage(EventHub.FAKE_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 (mBlockWebkitViewMessages) {
return false;
}
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;
}
// accessibility support
if (accessibilityScriptInjected()) {
if (AccessibilityManager.getInstance(mContext).isEnabled()) {
// if an accessibility script is injected we delegate to it the key handling.
// this script is a screen reader which is a fully fledged solution for blind
// users to navigate in and interact with web pages.
mWebViewCore.sendMessage(EventHub.KEY_UP, event);
return true;
} else {
// Clean up if accessibility was disabled after loading the current URL.
mAccessibilityScriptInjected = false;
}
} else if (mAccessibilityInjector != null) {
if (AccessibilityManager.getInstance(mContext).isEnabled()) {
if (mAccessibilityInjector.onKeyEvent(event)) {
// if an accessibility injector is present (no JavaScript enabled or the site
// opts out injecting our JavaScript screen reader) we let it decide whether to
// act on and consume the event.
return true;
}
} else {
// Clean up if accessibility was disabled after loading the current URL.
mAccessibilityInjector = null;
}
}
if (keyCode >= KeyEvent.KEYCODE_DPAD_UP
&& keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) {
if (nativePageShouldHandleShiftAndArrows()) {
letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState());
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 (isEnterActionKey(keyCode)) {
// remove the long press message first
mPrivateHandler.removeMessages(LONG_PRESS_CENTER);
mGotCenterDown = false;
if (mSelectingText) {
if (mExtendSelection) {
copySelection();
selectionDone();
} else {
mExtendSelection = true;
nativeSetExtendSelection();
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();
nativeShowCursorTimed();
if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) {
return true;
}
if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) {
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;
}
/*
* Enter selecting text mode, and see if CAB should be shown.
* Returns true if the WebView is now in
* selecting text mode (including if it was already in that mode, and this
* method did nothing).
*/
private boolean setUpSelect(boolean selectWord, int x, int y) {
if (0 == mNativeClass) return false; // client isn't initialized
if (inFullScreenMode()) return false;
if (mSelectingText) return true;
nativeResetSelection();
if (selectWord && !nativeWordSelection(x, y)) {
selectionDone();
return false;
}
mSelectCallback = new SelectActionModeCallback();
mSelectCallback.setWebView(this);
if (startActionMode(mSelectCallback) == null) {
// There is no ActionMode, so do not allow the user to modify a
// selection.
selectionDone();
return false;
}
mExtendSelection = false;
mSelectingText = mDrawSelectionPointer = true;
if (DEBUG_TEXT_HANDLES) {
// Debugging text handles requires running in software mode
setLayerType(LAYER_TYPE_SOFTWARE, null);
}
// don't let the picture change during text selection
WebViewCore.pauseUpdatePicture(mWebViewCore);
if (nativeHasCursorNode()) {
Rect rect = nativeCursorNodeBounds();
mSelectX = contentToViewX(rect.left);
mSelectY = contentToViewY(rect.top);
} else if (mLastTouchY > getVisibleTitleHeightImpl()) {
mSelectX = mScrollX + mLastTouchX;
mSelectY = mScrollY + mLastTouchY;
} else {
mSelectX = mScrollX + getViewWidth() / 2;
mSelectY = mScrollY + getViewHeightWithTitle() / 2;
}
nativeHideCursor();
mMinAutoScrollX = 0;
mMaxAutoScrollX = getViewWidth();
mMinAutoScrollY = 0;
mMaxAutoScrollY = getViewHeightWithTitle();
mCurrentScrollingLayerId = nativeScrollableLayer(viewToContentX(mSelectX),
viewToContentY(mSelectY), mScrollingLayerRect,
mScrollingLayerBounds);
if (mCurrentScrollingLayerId != 0) {
if (mScrollingLayerRect.left != mScrollingLayerRect.right) {
mMinAutoScrollX = Math.max(mMinAutoScrollX,
contentToViewX(mScrollingLayerBounds.left));
mMaxAutoScrollX = Math.min(mMaxAutoScrollX,
contentToViewX(mScrollingLayerBounds.right));
}
if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) {
mMinAutoScrollY = Math.max(mMinAutoScrollY,
contentToViewY(mScrollingLayerBounds.top));
mMaxAutoScrollY = Math.min(mMaxAutoScrollY,
contentToViewY(mScrollingLayerBounds.bottom));
}
}
mMinAutoScrollX += SELECT_SCROLL;
mMaxAutoScrollX -= SELECT_SCROLL;
mMinAutoScrollY += SELECT_SCROLL;
mMaxAutoScrollY -= SELECT_SCROLL;
return true;
}
/**
* Use this method to put the WebView into text selection mode.
* Do not rely on this functionality; it will be deprecated in the future.
* @deprecated This method is now obsolete.
*/
@Deprecated
public void emulateShiftHeld() {
checkThread();
setUpSelect(false, 0, 0);
}
/**
* Select all of the text in this WebView.
*
* @hide pending API council approval.
*/
public void selectAll() {
if (0 == mNativeClass) return; // client isn't initialized
if (inFullScreenMode()) return;
if (!mSelectingText) {
// retrieve a point somewhere within the text
Point select = nativeSelectableText();
if (!selectText(select.x, select.y)) return;
}
nativeSelectAll();
mDrawSelectionPointer = false;
mExtendSelection = true;
invalidate();
}
/**
* Called when the selection has been removed.
*/
void selectionDone() {
if (mSelectingText) {
mSelectingText = false;
if (DEBUG_TEXT_HANDLES) {
// Debugging text handles required running in software mode, set
// back to default now
setLayerType(LAYER_TYPE_NONE, null);
}
// finish is idempotent, so this is fine even if selectionDone was
// called by mSelectCallback.onDestroyActionMode
mSelectCallback.finish();
mSelectCallback = null;
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
invalidate(); // redraw without selection
mAutoScrollX = 0;
mAutoScrollY = 0;
mSentAutoScrollMessage = false;
}
}
/**
* Copy the selection to the clipboard
*
* @hide pending API council approval.
*/
public boolean copySelection() {
boolean copiedSomething = false;
String selection = getSelection();
if (selection != null && selection != "") {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "copySelection \"" + selection + "\"");
}
Toast.makeText(mContext
, com.android.internal.R.string.text_copied
, Toast.LENGTH_SHORT).show();
copiedSomething = true;
ClipboardManager cm = (ClipboardManager)getContext()
.getSystemService(Context.CLIPBOARD_SERVICE);
cm.setText(selection);
}
invalidate(); // remove selection region and pointer
return copiedSomething;
}
/**
* @hide pending API Council approval.
*/
public SearchBox getSearchBox() {
if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) {
return null;
}
return mWebViewCore.getBrowserFrame().getSearchBox();
}
/**
* Returns the currently highlighted text as a string.
*/
String getSelection() {
if (mNativeClass == 0) return "";
return nativeGetSelection();
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if (hasWindowFocus()) setActive(true);
final ViewTreeObserver treeObserver = getViewTreeObserver();
if (mGlobalLayoutListener == null) {
mGlobalLayoutListener = new InnerGlobalLayoutListener();
treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener);
}
if (mScrollChangedListener == null) {
mScrollChangedListener = new InnerScrollChangedListener();
treeObserver.addOnScrollChangedListener(mScrollChangedListener);
}
addAccessibilityApisToJavaScript();
mTouchEventQueue.reset();
}
@Override
protected void onDetachedFromWindow() {
clearHelpers();
mZoomManager.dismissZoomPicker();
if (hasWindowFocus()) setActive(false);
final ViewTreeObserver treeObserver = getViewTreeObserver();
if (mGlobalLayoutListener != null) {
treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener);
mGlobalLayoutListener = null;
}
if (mScrollChangedListener != null) {
treeObserver.removeOnScrollChangedListener(mScrollChangedListener);
mScrollChangedListener = null;
}
removeAccessibilityApisFromJavaScript();
super.onDetachedFromWindow();
}
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
// The zoomManager may be null if the webview is created from XML that
// specifies the view's visibility param as not visible (see http://b/2794841)
if (visibility != View.VISIBLE && mZoomManager != null) {
mZoomManager.dismissZoomPicker();
}
updateDrawingState();
}
/**
* @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) {
}
void setActive(boolean active) {
if (active) {
if (hasFocus()) {
// If our window regained focus, and we have focus, then begin
// drawing the cursor ring
mDrawCursorRing = !inEditingMode();
setFocusControllerActive(true);
} else {
mDrawCursorRing = false;
if (!inEditingMode()) {
// If our window gained focus, but we do not have it, do not
// draw the cursor ring.
setFocusControllerActive(false);
}
// We do not call recordButtons here because we assume
// that when we lost focus, or window focus, it got called with
// false for the first parameter
}
} else {
if (!mZoomManager.isZoomPickerVisible()) {
/*
* The external 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.
*/
mDrawCursorRing = false;
}
mKeysPressed.clear();
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
mTouchMode = TOUCH_DONE_MODE;
setFocusControllerActive(false);
}
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) {
JWebCoreJavaBridge.setActiveWebView(this);
if (mPictureUpdatePausedForFocusChange) {
WebViewCore.resumeUpdatePicture(mWebViewCore);
mPictureUpdatePausedForFocusChange = false;
}
} else {
JWebCoreJavaBridge.removeActiveWebView(this);
final WebSettings settings = getSettings();
if (settings != null && settings.enableSmoothTransition() &&
mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) {
WebViewCore.pauseUpdatePicture(mWebViewCore);
mPictureUpdatePausedForFocusChange = true;
}
}
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 setFocusControllerActive(boolean active) {
if (mWebViewCore == null) return;
mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0);
// Need to send this message after the document regains focus.
if (active && mListBoxMessage != null) {
mWebViewCore.sendMessage(mListBoxMessage);
mListBoxMessage = null;
}
}
@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 = !inEditingMode();
setFocusControllerActive(true);
//} else {
// The WebView has gained focus while we do not have
// windowfocus. When our window lost focus, we should have
// called recordButtons(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.
mDrawCursorRing = false;
if (!inEditingMode()) {
setFocusControllerActive(false);
}
mKeysPressed.clear();
}
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
void setGLRectViewport() {
// Use the getGlobalVisibleRect() to get the intersection among the parents
// visible == false means we're clipped - send a null rect down to indicate that
// we should not draw
boolean visible = getGlobalVisibleRect(mGLRectViewport);
if (visible) {
// Then need to invert the Y axis, just for GL
View rootView = getRootView();
int rootViewHeight = rootView.getHeight();
mViewRectViewport.set(mGLRectViewport);
int savedWebViewBottom = mGLRectViewport.bottom;
mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl();
mGLRectViewport.top = rootViewHeight - savedWebViewBottom;
mGLViewportEmpty = false;
} else {
mGLViewportEmpty = true;
}
calcOurContentVisibleRectF(mVisibleContentRect);
nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport,
mGLViewportEmpty ? null : mViewRectViewport, mVisibleContentRect);
}
/**
* @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(false);
}
setGLRectViewport();
return changed;
}
@Override
protected void onSizeChanged(int w, int h, int ow, int oh) {
super.onSizeChanged(w, h, ow, oh);
// 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) / mZoomManager.getDefaultMinZoomScale());
if (newMaxViewportWidth > sMaxViewportWidth) {
sMaxViewportWidth = newMaxViewportWidth;
}
mZoomManager.onSizeChanged(w, h, ow, oh);
if (mLoadedPicture != null && mDelaySetPicture == null) {
// Size changes normally result in a new picture
// Re-set the loaded picture to simulate that
// However, do not update the base layer as that hasn't changed
setNewPicture(mLoadedPicture, false);
}
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
if (!mInOverScrollMode) {
sendOurVisibleRect();
// update WebKit if visible title bar height changed. The logic is same
// as getVisibleTitleHeightImpl.
int titleHeight = getTitleHeight();
if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) {
sendViewSizeZoom(false);
}
}
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
switch (event.getAction()) {
case KeyEvent.ACTION_DOWN:
mKeysPressed.add(Integer.valueOf(event.getKeyCode()));
break;
case KeyEvent.ACTION_MULTIPLE:
// Always accept the action.
break;
case KeyEvent.ACTION_UP:
int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode()));
if (location == -1) {
// We did not receive the key down for this key, so do not
// handle the key up.
return false;
} else {
// We did receive the key down. Handle the key up, and
// remove it from our pressed keys.
mKeysPressed.remove(location);
}
break;
default:
// Accept the action. This should not happen, unless a new
// action is added to KeyEvent.
break;
}
if (inEditingMode() && mWebTextView.isFocused()) {
// Ensure that the WebTextView gets the event, even if it does
// not currently have a bounds.
return mWebTextView.dispatchKeyEvent(event);
} else {
return super.dispatchKeyEvent(event);
}
}
/*
* Here is 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;
*
* Adjustable parameters. Angle is the radians on a unit circle, limited
* to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical)
*/
private static final float HSLOPE_TO_START_SNAP = .25f;
private static final float HSLOPE_TO_BREAK_SNAP = .4f;
private static final float VSLOPE_TO_START_SNAP = 1.25f;
private static final float VSLOPE_TO_BREAK_SNAP = .95f;
/*
* These values are used to influence the average angle when entering
* snap mode. If is is the first movement entering snap, we set the average
* to the appropriate ideal. If the user is entering into snap after the
* first movement, then we average the average angle with these values.
*/
private static final float ANGLE_VERT = 2f;
private static final float ANGLE_HORIZ = 0f;
/*
* The modified moving average weight.
* Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n
*/
private static final float MMA_WEIGHT_N = 5;
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() {
if (mFullScreenHolder != null) return true;
if (mBlockWebkitViewMessages) return false;
return mForwardTouchEvents
&& !mSelectingText
&& mPreventDefault != PREVENT_DEFAULT_IGNORE
&& mPreventDefault != PREVENT_DEFAULT_NO;
}
private boolean inFullScreenMode() {
return mFullScreenHolder != null;
}
private void dismissFullScreenMode() {
if (inFullScreenMode()) {
mFullScreenHolder.hide();
mFullScreenHolder = null;
}
}
void onPinchToZoomAnimationStart() {
// cancel the single touch handling
cancelTouch();
onZoomAnimationStart();
}
void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) {
onZoomAnimationEnd();
// 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);
}
// See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a
// layer is found.
private void startScrollingLayer(float x, float y) {
int contentX = viewToContentX((int) x + mScrollX);
int contentY = viewToContentY((int) y + mScrollY);
mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY,
mScrollingLayerRect, mScrollingLayerBounds);
if (mCurrentScrollingLayerId != 0) {
mTouchMode = TOUCH_DRAG_LAYER_MODE;
}
}
// 1/(density * density) used to compute the distance between points.
// Computed in init().
private float DRAG_LAYER_INVERSE_DENSITY_SQUARED;
// The distance between two points reported in onTouchEvent scaled by the
// density of the screen.
private static final int DRAG_LAYER_FINGER_DISTANCE = 20000;
@Override
public boolean onHoverEvent(MotionEvent event) {
if (mNativeClass == 0) {
return false;
}
WebViewCore.CursorData data = cursorDataNoPosition();
data.mX = viewToContentX((int) event.getX() + mScrollX);
data.mY = viewToContentY((int) event.getY() + mScrollY);
mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data);
return true;
}
@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
+ " numPointers=" + ev.getPointerCount());
}
// If WebKit wasn't interested in this multitouch gesture, enqueue
// the event for handling directly rather than making the round trip
// to WebKit and back.
if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) {
passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence());
} else {
mTouchEventQueue.enqueueTouchEvent(ev);
}
// Since all events are handled asynchronously, we always want the gesture stream.
return true;
}
private float calculateDragAngle(int dx, int dy) {
dx = Math.abs(dx);
dy = Math.abs(dy);
return (float) Math.atan2(dy, dx);
}
/*
* Common code for single touch and multi-touch.
* (x, y) denotes current focus point, which is the touch point for single touch
* and the middle point for multi-touch.
*/
private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) {
long eventTime = ev.getEventTime();
// 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.
x = Math.min(x, getViewWidth() - 1);
y = Math.min(y, getViewHeightWithTitle() - 1);
int deltaX = mLastTouchX - x;
int deltaY = mLastTouchY - y;
int contentX = viewToContentX(x + mScrollX);
int contentY = viewToContentY(y + mScrollY);
switch (action) {
case MotionEvent.ACTION_DOWN: {
mPreventDefault = PREVENT_DEFAULT_NO;
mConfirmMove = false;
mInitialHitTestResult = null;
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;
nativeSetIsScrolling(false);
} else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) {
mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP);
if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) {
removeTouchHighlight();
}
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 = !mBlockWebkitViewMessages
&& (!inFullScreenMode() && mForwardTouchEvents)
? hitFocusedPlugin(contentX, contentY)
: false;
}
} else { // the normal case
mTouchMode = TOUCH_INIT_MODE;
mDeferTouchProcess = !mBlockWebkitViewMessages
&& (!inFullScreenMode() && mForwardTouchEvents)
? hitFocusedPlugin(contentX, contentY)
: false;
if (!mBlockWebkitViewMessages) {
mWebViewCore.sendMessage(
EventHub.UPDATE_FRAME_CACHE_IF_LOADING);
}
if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) {
TouchHighlightData data = new TouchHighlightData();
data.mX = contentX;
data.mY = contentY;
data.mNativeLayerRect = new Rect();
data.mNativeLayer = nativeScrollableLayer(
contentX, contentY, data.mNativeLayerRect, null);
data.mSlop = viewToContentDimension(mNavSlop);
mTouchHighlightRegion.setEmpty();
if (!mBlockWebkitViewMessages) {
mTouchHighlightRequested = System.currentTimeMillis();
mWebViewCore.sendMessageAtFrontOfQueue(
EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data);
}
if (DEBUG_TOUCH_HIGHLIGHT) {
if (getSettings().getNavDump()) {
mTouchHighlightX = (int) x + mScrollX;
mTouchHighlightY = (int) y + mScrollY;
mPrivateHandler.postDelayed(new Runnable() {
public void run() {
mTouchHighlightX = mTouchHighlightY = 0;
invalidate();
}
}, TOUCH_HIGHLIGHT_ELAPSE_TIME);
}
}
}
if (mLogEvent && eventTime - mLastTouchUpTime < 1000) {
EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION,
(eventTime - mLastTouchUpTime), eventTime);
}
if (mSelectingText) {
mDrawSelectionPointer = false;
mSelectionStarted = nativeStartSelection(contentX, contentY);
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "select=" + contentX + "," + contentY);
}
invalidate();
}
}
// Trigger the link
if (!mSelectingText && (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 (!mBlockWebkitViewMessages && 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.mIds = new int[1];
ted.mIds[0] = ev.getPointerId(0);
ted.mPoints = new Point[1];
ted.mPoints[0] = new Point(contentX, contentY);
ted.mPointsInView = new Point[1];
ted.mPointsInView[0] = new Point(x, y);
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
ted.mNativeLayer = nativeScrollableLayer(
contentX, contentY, ted.mNativeLayerRect, null);
ted.mSequence = mTouchEventQueue.nextTouchSequence();
mTouchEventQueue.preQueueTouchEventData(ted);
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
if (mDeferTouchProcess) {
// still needs to set them for compute deltaX/Y
mLastTouchX = x;
mLastTouchY = y;
break;
}
if (!inFullScreenMode()) {
mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT);
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;
}
if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) {
removeTouchHighlight();
}
}
// pass the touch events from UI thread to WebCore thread
if (shouldForwardTouchEvent() && mConfirmMove && (firstMove
|| eventTime - mLastSentTouchTime > mCurrentTouchInterval)) {
TouchEventData ted = new TouchEventData();
ted.mAction = action;
ted.mIds = new int[1];
ted.mIds[0] = ev.getPointerId(0);
ted.mPoints = new Point[1];
ted.mPoints[0] = new Point(contentX, contentY);
ted.mPointsInView = new Point[1];
ted.mPointsInView[0] = new Point(x, y);
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
ted.mNativeLayer = mCurrentScrollingLayerId;
ted.mNativeLayerRect.set(mScrollingLayerRect);
ted.mSequence = mTouchEventQueue.nextTouchSequence();
mTouchEventQueue.preQueueTouchEventData(ted);
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
mLastSentTouchTime = eventTime;
if (mDeferTouchProcess) {
break;
}
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);
} else {
mVelocityTracker.addMovement(ev);
}
if (mSelectingText && mSelectionStarted) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "extend=" + contentX + "," + contentY);
}
ViewParent parent = getParent();
if (parent != null) {
parent.requestDisallowInterceptTouchEvent(true);
}
mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL
: x >= mMaxAutoScrollX ? SELECT_SCROLL : 0;
mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL
: y >= mMaxAutoScrollY ? SELECT_SCROLL : 0;
if ((mAutoScrollX != 0 || mAutoScrollY != 0)
&& !mSentAutoScrollMessage) {
mSentAutoScrollMessage = true;
mPrivateHandler.sendEmptyMessageDelayed(
SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL);
}
if (deltaX != 0 || deltaY != 0) {
nativeExtendSelection(contentX, contentY);
invalidate();
}
break;
}
if (mTouchMode != TOUCH_DRAG_MODE &&
mTouchMode != TOUCH_DRAG_LAYER_MODE) {
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;
}
// Only lock dragging to one axis if we don't have a scale in progress.
// Scaling implies free-roaming movement. Note this is only ever a question
// if mZoomManager.supportsPanDuringZoom() is true.
final ScaleGestureDetector detector =
mZoomManager.getMultiTouchGestureDetector();
mAverageAngle = calculateDragAngle(deltaX, deltaY);
if (detector == null || !detector.isInProgress()) {
// if it starts nearly horizontal or vertical, enforce it
if (mAverageAngle < HSLOPE_TO_START_SNAP) {
mSnapScrollMode = SNAP_X;
mSnapPositive = deltaX > 0;
mAverageAngle = ANGLE_HORIZ;
} else if (mAverageAngle > VSLOPE_TO_START_SNAP) {
mSnapScrollMode = SNAP_Y;
mSnapPositive = deltaY > 0;
mAverageAngle = ANGLE_VERT;
}
}
mTouchMode = TOUCH_DRAG_MODE;
mLastTouchX = x;
mLastTouchY = y;
deltaX = 0;
deltaY = 0;
startScrollingLayer(x, y);
startDrag();
}
// do pan
boolean done = false;
boolean keepScrollBarsVisible = false;
if (deltaX == 0 && deltaY == 0) {
keepScrollBarsVisible = done = true;
} else {
mAverageAngle +=
(calculateDragAngle(deltaX, deltaY) - mAverageAngle)
/ MMA_WEIGHT_N;
if (mSnapScrollMode != SNAP_NONE) {
if (mSnapScrollMode == SNAP_Y) {
// radical change means getting out of snap mode
if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) {
mSnapScrollMode = SNAP_NONE;
}
}
if (mSnapScrollMode == SNAP_X) {
// radical change means getting out of snap mode
if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) {
mSnapScrollMode = SNAP_NONE;
}
}
} else {
if (mAverageAngle < HSLOPE_TO_START_SNAP) {
mSnapScrollMode = SNAP_X;
mSnapPositive = deltaX > 0;
mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2;
} else if (mAverageAngle > VSLOPE_TO_START_SNAP) {
mSnapScrollMode = SNAP_Y;
mSnapPositive = deltaY > 0;
mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2;
}
}
if (mSnapScrollMode != SNAP_NONE) {
if ((mSnapScrollMode & SNAP_X) == SNAP_X) {
deltaY = 0;
} else {
deltaX = 0;
}
}
mLastTouchX = x;
mLastTouchY = y;
if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) {
mHeldMotionless = MOTIONLESS_FALSE;
nativeSetIsScrolling(true);
} else {
mHeldMotionless = MOTIONLESS_TRUE;
nativeSetIsScrolling(false);
keepScrollBarsVisible = true;
}
mLastTouchTime = eventTime;
}
doDrag(deltaX, deltaY);
// Turn off scrollbars when dragging a layer.
if (keepScrollBarsVisible &&
mTouchMode != TOUCH_DRAG_LAYER_MODE) {
if (mHeldMotionless != MOTIONLESS_TRUE) {
mHeldMotionless = MOTIONLESS_TRUE;
invalidate();
}
// keep the scrollbar on the screen even there is no scroll
awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(),
false);
// Post a message so that we'll keep them alive while we're not scrolling.
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(AWAKEN_SCROLL_BARS),
ViewConfiguration.getScrollDefaultDelay());
// return false to indicate that we can't pan out of the
// view space
return !done;
} else {
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
}
break;
}
case MotionEvent.ACTION_UP: {
if (!isFocused()) requestFocus();
// pass the touch events from UI thread to WebCore thread
if (shouldForwardTouchEvent()) {
TouchEventData ted = new TouchEventData();
ted.mIds = new int[1];
ted.mIds[0] = ev.getPointerId(0);
ted.mAction = action;
ted.mPoints = new Point[1];
ted.mPoints[0] = new Point(contentX, contentY);
ted.mPointsInView = new Point[1];
ted.mPointsInView[0] = new Point(x, y);
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
ted.mNativeLayer = mCurrentScrollingLayerId;
ted.mNativeLayerRect.set(mScrollingLayerRect);
ted.mSequence = mTouchEventQueue.nextTouchSequence();
mTouchEventQueue.preQueueTouchEventData(ted);
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
}
mLastTouchUpTime = eventTime;
if (mSentAutoScrollMessage) {
mAutoScrollX = mAutoScrollY = 0;
}
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.mIds = new int[1];
ted.mIds[0] = ev.getPointerId(0);
ted.mAction = WebViewCore.ACTION_DOUBLETAP;
ted.mPoints = new Point[1];
ted.mPoints[0] = new Point(contentX, contentY);
ted.mPointsInView = new Point[1];
ted.mPointsInView[0] = new Point(x, y);
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
ted.mNativeLayer = nativeScrollableLayer(
contentX, contentY,
ted.mNativeLayerRect, null);
ted.mSequence = mTouchEventQueue.nextTouchSequence();
mTouchEventQueue.preQueueTouchEventData(ted);
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
} else if (mPreventDefault != PREVENT_DEFAULT_YES){
mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY);
mTouchMode = TOUCH_DONE_MODE;
}
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)) {
// If the user has performed a very quick touch
// sequence it is possible that we may get here
// before WebCore has had a chance to process the events.
// In this case, any call to preventDefault in the
// JS touch handler will not have been executed yet.
// Hence we will see both the UI (now) and WebCore
// (when context switches) handling the event,
// regardless of whether the web developer actually
// doeses preventDefault in their touch handler. This
// is the nature of our asynchronous touch model.
// 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 (mSelectingText) {
// tapping on selection or controls does nothing
if (!nativeHitSelection(contentX, contentY)) {
selectionDone();
}
break;
}
// only trigger double tap if the WebView is
// scalable
if (mTouchMode == TOUCH_INIT_MODE
&& (canZoomIn() || canZoomOut())) {
mPrivateHandler.sendEmptyMessageDelayed(
RELEASE_SINGLE_TAP, ViewConfiguration
.getDoubleTapTimeout());
} else {
doShortPress();
}
break;
}
case TOUCH_DRAG_MODE:
case TOUCH_DRAG_LAYER_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);
} else {
mVelocityTracker.addMovement(ev);
}
// set to MOTIONLESS_IGNORE so that it won't keep
// removing and sending message in
// drawCoreAndCursorRing()
mHeldMotionless = MOTIONLESS_IGNORE;
doFling();
break;
} else {
if (mScroller.springBack(mScrollX, mScrollY, 0,
computeMaxScrollX(), 0,
computeMaxScrollY())) {
invalidate();
}
}
// 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();
if (!mSelectingText) {
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
break;
}
stopTouch();
break;
}
case MotionEvent.ACTION_CANCEL: {
if (mTouchMode == TOUCH_DRAG_MODE) {
mScroller.springBack(mScrollX, mScrollY, 0,
computeMaxScrollX(), 0, computeMaxScrollY());
invalidate();
}
cancelWebCoreTouchEvent(contentX, contentY, false);
cancelTouch();
break;
}
}
return true;
}
private void passMultiTouchToWebKit(MotionEvent ev, long sequence) {
TouchEventData ted = new TouchEventData();
ted.mAction = ev.getActionMasked();
final int count = ev.getPointerCount();
ted.mIds = new int[count];
ted.mPoints = new Point[count];
ted.mPointsInView = new Point[count];
for (int c = 0; c < count; c++) {
ted.mIds[c] = ev.getPointerId(c);
int x = viewToContentX((int) ev.getX(c) + mScrollX);
int y = viewToContentY((int) ev.getY(c) + mScrollY);
ted.mPoints[c] = new Point(x, y);
ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c));
}
if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN
|| ted.mAction == MotionEvent.ACTION_POINTER_UP) {
ted.mActionIndex = ev.getActionIndex();
}
ted.mMetaState = ev.getMetaState();
ted.mReprocess = true;
ted.mMotionEvent = MotionEvent.obtain(ev);
ted.mSequence = sequence;
mTouchEventQueue.preQueueTouchEventData(ted);
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
cancelLongPress();
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
}
void handleMultiTouchInWebView(MotionEvent ev) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime()
+ " mTouchMode=" + mTouchMode
+ " numPointers=" + ev.getPointerCount()
+ " scrolloffset=(" + mScrollX + "," + mScrollY + ")");
}
final ScaleGestureDetector detector =
mZoomManager.getMultiTouchGestureDetector();
// A few apps use WebView but don't instantiate gesture detector.
// We don't need to support multi touch for them.
if (detector == null) return;
float x = ev.getX();
float y = ev.getY();
if (mPreventDefault != PREVENT_DEFAULT_YES) {
detector.onTouchEvent(ev);
if (detector.isInProgress()) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "detector is in progress");
}
mLastTouchTime = ev.getEventTime();
x = detector.getFocusX();
y = detector.getFocusY();
cancelLongPress();
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
if (!mZoomManager.supportsPanDuringZoom()) {
return;
}
mTouchMode = TOUCH_DRAG_MODE;
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
}
}
int action = ev.getActionMasked();
if (action == MotionEvent.ACTION_POINTER_DOWN) {
cancelTouch();
action = MotionEvent.ACTION_DOWN;
} else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) {
// set mLastTouchX/Y to the remaining points for multi-touch.
mLastTouchX = Math.round(x);
mLastTouchY = Math.round(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;
}
}
handleTouchEventCommon(ev, action, Math.round(x), Math.round(y));
}
private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) {
if (shouldForwardTouchEvent()) {
if (removeEvents) {
mWebViewCore.removeMessages(EventHub.TOUCH_EVENT);
}
TouchEventData ted = new TouchEventData();
ted.mIds = new int[1];
ted.mIds[0] = 0;
ted.mPoints = new Point[1];
ted.mPoints[0] = new Point(x, y);
ted.mPointsInView = new Point[1];
int viewX = contentToViewX(x) - mScrollX;
int viewY = contentToViewY(y) - mScrollY;
ted.mPointsInView[0] = new Point(viewX, viewY);
ted.mAction = MotionEvent.ACTION_CANCEL;
ted.mNativeLayer = nativeScrollableLayer(
x, y, ted.mNativeLayerRect, null);
ted.mSequence = mTouchEventQueue.nextTouchSequence();
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
mPreventDefault = PREVENT_DEFAULT_IGNORE;
if (removeEvents) {
// Mark this after sending the message above; we should
// be willing to ignore the cancel event that we just sent.
mTouchEventQueue.ignoreCurrentlyMissingEvents();
}
}
}
private void startTouch(float x, float y, long eventTime) {
// Remember where the motion event started
mStartTouchX = mLastTouchX = Math.round(x);
mStartTouchY = mLastTouchY = Math.round(y);
mLastTouchTime = eventTime;
mVelocityTracker = VelocityTracker.obtain();
mSnapScrollMode = SNAP_NONE;
mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION,
ViewConfiguration.getTapTimeout());
}
private void startDrag() {
WebViewCore.reducePriority();
// to get better performance, pause updating the picture
WebViewCore.pauseUpdatePicture(mWebViewCore);
nativeSetIsScrolling(true);
if (!mDragFromTextInput) {
nativeHideCursor();
}
if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF
|| mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) {
mZoomManager.invokeZoomPicker();
}
}
private void doDrag(int deltaX, int deltaY) {
if ((deltaX | deltaY) != 0) {
int oldX = mScrollX;
int oldY = mScrollY;
int rangeX = computeMaxScrollX();
int rangeY = computeMaxScrollY();
int overscrollDistance = mOverscrollDistance;
// Check for the original scrolling layer in case we change
// directions. mTouchMode might be TOUCH_DRAG_MODE if we have
// reached the edge of a layer but mScrollingLayer will be non-zero
// if we initiated the drag on a layer.
if (mCurrentScrollingLayerId != 0) {
final int contentX = viewToContentDimension(deltaX);
final int contentY = viewToContentDimension(deltaY);
// Check the scrolling bounds to see if we will actually do any
// scrolling. The rectangle is in document coordinates.
final int maxX = mScrollingLayerRect.right;
final int maxY = mScrollingLayerRect.bottom;
final int resultX = Math.max(0,
Math.min(mScrollingLayerRect.left + contentX, maxX));
final int resultY = Math.max(0,
Math.min(mScrollingLayerRect.top + contentY, maxY));
if (resultX != mScrollingLayerRect.left ||
resultY != mScrollingLayerRect.top) {
// In case we switched to dragging the page.
mTouchMode = TOUCH_DRAG_LAYER_MODE;
deltaX = contentX;
deltaY = contentY;
oldX = mScrollingLayerRect.left;
oldY = mScrollingLayerRect.top;
rangeX = maxX;
rangeY = maxY;
} else {
// Scroll the main page if we are not going to scroll the
// layer. This does not reset mScrollingLayer in case the
// user changes directions and the layer can scroll the
// other way.
mTouchMode = TOUCH_DRAG_MODE;
}
}
if (mOverScrollGlow != null) {
mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY);
}
overScrollBy(deltaX, deltaY, oldX, oldY,
rangeX, rangeY,
mOverscrollDistance, mOverscrollDistance, true);
if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) {
invalidate();
}
}
mZoomManager.keepZoomPickerVisible();
}
private void stopTouch() {
if (mScroller.isFinished() && !mSelectingText
&& (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) {
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
nativeSetIsScrolling(false);
}
// 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;
}
// Release any pulled glows
if (mOverScrollGlow != null) {
mOverScrollGlow.releaseAll();
}
}
private void cancelTouch() {
// 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
|| mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) {
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
nativeSetIsScrolling(false);
}
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) {
removeTouchHighlight();
}
mHeldMotionless = MOTIONLESS_TRUE;
mTouchMode = TOUCH_DONE_MODE;
nativeHideCursor();
}
@Override
public boolean onGenericMotionEvent(MotionEvent event) {
if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) {
switch (event.getAction()) {
case MotionEvent.ACTION_SCROLL: {
final float vscroll;
final float hscroll;
if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) {
vscroll = 0;
hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
} else {
vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL);
hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL);
}
if (hscroll != 0 || vscroll != 0) {
final int vdelta = (int) (vscroll * getVerticalScrollFactor());
final int hdelta = (int) (hscroll * getHorizontalScrollFactor());
if (pinScrollBy(hdelta, vdelta, false, 0)) {
return true;
}
}
}
}
}
return super.onGenericMotionEvent(event);
}
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 mSelectingText = false;
private boolean mSelectionStarted = false;
private boolean mExtendSelection = false;
private boolean mDrawSelectionPointer = 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 static final int SELECT_SCROLL = 5;
private int mSelectX = 0;
private int mSelectY = 0;
private boolean mFocusSizeChanged = 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;
private DrawData mDelaySetPicture;
private DrawData mLoadedPicture;
public void setMapTrackballToArrowKeys(boolean setMap) {
checkThread();
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;
}
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
if (mSelectingText) {
return true; // discard press if copy in progress
}
mTrackballDown = true;
if (mNativeClass == 0) {
return false;
}
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 (mSelectingText) {
if (mExtendSelection) {
copySelection();
selectionDone();
} else {
mExtendSelection = true;
nativeSetExtendSelection();
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 && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) ||
AccessibilityManager.getInstance(mContext).isEnabled()) {
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, ev.getMetaState());
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));
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 metaState) {
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 (mSelectingText) {
if (!mDrawSelectionPointer) {
// The last selection was made by touch, disabling drawing the
// selection pointer. Allow the trackball to adjust the
// position of the touch control.
mSelectX = contentToViewX(nativeSelectionX());
mSelectY = contentToViewY(nativeSelectionY());
mDrawSelectionPointer = mExtendSelection = true;
nativeSetExtendSelection();
}
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 && nativePageShouldHandleShiftAndArrows()) {
for (int i = 0; i < count; i++) {
letPageHandleNavKey(selectKeyCode, time, true, metaState);
}
letPageHandleNavKey(selectKeyCode, time, false, metaState);
} 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);
}
}
}
/**
* Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}.
* @return Maximum horizontal scroll position within real content
*/
int computeMaxScrollX() {
return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0);
}
/**
* Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}.
* @return Maximum vertical scroll position within real content
*/
int computeMaxScrollY() {
return Math.max(computeRealVerticalScrollRange() + getTitleHeight()
- getViewHeightWithTitle(), 0);
}
boolean updateScrollCoordinates(int x, int y) {
int oldX = mScrollX;
int oldY = mScrollY;
mScrollX = x;
mScrollY = y;
if (oldX != mScrollX || oldY != mScrollY) {
onScrollChanged(mScrollX, mScrollY, oldX, oldY);
return true;
} else {
return false;
}
}
public void flingScroll(int vx, int vy) {
checkThread();
mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0,
computeMaxScrollY(), mOverflingDistance, mOverflingDistance);
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();
int scrollX = mScrollX;
int scrollY = mScrollY;
int overscrollDistance = mOverscrollDistance;
int overflingDistance = mOverflingDistance;
// Use the layer's scroll data if applicable.
if (mTouchMode == TOUCH_DRAG_LAYER_MODE) {
scrollX = mScrollingLayerRect.left;
scrollY = mScrollingLayerRect.top;
maxX = mScrollingLayerRect.right;
maxY = mScrollingLayerRect.bottom;
// No overscrolling for layers.
overscrollDistance = overflingDistance = 0;
}
if (mSnapScrollMode != SNAP_NONE) {
if ((mSnapScrollMode & SNAP_X) == SNAP_X) {
vy = 0;
} else {
vx = 0;
}
}
if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) {
WebViewCore.resumePriority();
if (!mSelectingText) {
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) {
invalidate();
}
return;
}
float currentVelocity = mScroller.getCurrVelocity();
float velocity = (float) Math.hypot(vx, vy);
if (mLastVelocity > 0 && currentVelocity > 0 && velocity
> mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) {
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;
velocity = (float) Math.hypot(vx, vy);
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
+ " scrollX=" + scrollX + " scrollY=" + scrollY
+ " layer=" + mCurrentScrollingLayerId);
}
// Allow sloppy flings without overscrolling at the edges.
if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) {
vx = 0;
}
if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) {
vy = 0;
}
if (overscrollDistance < overflingDistance) {
if ((vx > 0 && scrollX == -overscrollDistance) ||
(vx < 0 && scrollX == maxX + overscrollDistance)) {
vx = 0;
}
if ((vy > 0 && scrollY == -overscrollDistance) ||
(vy < 0 && scrollY == maxY + overscrollDistance)) {
vy = 0;
}
}
mLastVelX = vx;
mLastVelY = vy;
mLastVelocity = velocity;
// no horizontal overscroll if the content just fits
mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY,
maxX == 0 ? 0 : overflingDistance, overflingDistance);
// Duration is calculated based on velocity. With range boundaries and overscroll
// we may not know how long the final animation will take. (Hence the deprecation
// warning on the call below.) It's not a big deal for scroll bars but if webcore
// resumes during this effect we will take a performance hit. See computeScroll;
// we resume webcore there when the animation is finished.
final int time = mScroller.getDuration();
// Suppress scrollbars for layer scrolling.
if (mTouchMode != TOUCH_DRAG_LAYER_MODE) {
awakenScrollBars(time);
}
invalidate();
}
/**
* 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() {
checkThread();
if (!getSettings().supportZoom()) {
Log.w(LOGTAG, "This WebView doesn't support zoom.");
return null;
}
return mZoomManager.getExternalZoomPicker();
}
void dismissZoomControl() {
mZoomManager.dismissZoomPicker();
}
float getDefaultZoomScale() {
return mZoomManager.getDefaultScale();
}
/**
* Return the overview scale of the WebView
* @return The overview scale.
*/
float getZoomOverviewScale() {
return mZoomManager.getZoomOverviewScale();
}
/**
* @return TRUE if the WebView can be zoomed in.
*/
public boolean canZoomIn() {
checkThread();
return mZoomManager.canZoomIn();
}
/**
* @return TRUE if the WebView can be zoomed out.
*/
public boolean canZoomOut() {
checkThread();
return mZoomManager.canZoomOut();
}
/**
* Perform zoom in in the webview
* @return TRUE if zoom in succeeds. FALSE if no zoom changes.
*/
public boolean zoomIn() {
checkThread();
return mZoomManager.zoomIn();
}
/**
* Perform zoom out in the webview
* @return TRUE if zoom out succeeds. FALSE if no zoom changes.
*/
public boolean zoomOut() {
checkThread();
return mZoomManager.zoomOut();
}
/**
* This selects the best clickable target at mLastTouchX and mLastTouchY
* and calls showCursorTimed on the native side
*/
private void updateSelection() {
if (mNativeClass == 0) {
return;
}
mPrivateHandler.removeMessages(UPDATE_SELECTION);
// mLastTouchX and mLastTouchY are the point in the current viewport
int contentX = viewToContentX(mLastTouchX + mScrollX);
int contentY = viewToContentY(mLastTouchY + mScrollY);
int slop = viewToContentDimension(mNavSlop);
Rect rect = new Rect(contentX - slop, contentY - slop,
contentX + slop, contentY + slop);
nativeSelectBestAt(rect);
mInitialHitTestResult = hitTestResult(null);
}
/**
* Scroll the focused text field to match the WebTextView
* @param xPercent New x position of the WebTextView from 0 to 1.
*/
/*package*/ void scrollFocusedTextInputX(float xPercent) {
if (!inEditingMode() || mWebViewCore == null) {
return;
}
mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0,
new Float(xPercent));
}
/**
* Scroll the focused textarea vertically to match the WebTextView
* @param y New y position of the WebTextView in view coordinates
*/
/* package */ void scrollFocusedTextInputY(int y) {
if (!inEditingMode() || mWebViewCore == null) {
return;
}
mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y));
}
/**
* 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 = Math.round(x + mWebTextView.getLeft() - mScrollX);
mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY);
mLastTouchTime = eventTime;
if (!mScroller.isFinished()) {
abortAnimation();
}
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());
int slop = viewToContentDimension(mNavSlop);
nativeMotionUp(x, y, slop);
}
/**
* 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;
updateSelection();
switchOutDrawHistory();
// mLastTouchX and mLastTouchY are the point in the current viewport
int contentX = viewToContentX(mLastTouchX + mScrollX);
int contentY = viewToContentY(mLastTouchY + mScrollY);
int slop = viewToContentDimension(mNavSlop);
if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) {
// set mTouchHighlightRequested to 0 to cause an immediate
// drawing of the touch rings
mTouchHighlightRequested = 0;
invalidate(mTouchHighlightRegion.getBounds());
mPrivateHandler.postDelayed(new Runnable() {
@Override
public void run() {
removeTouchHighlight();
}
}, ViewConfiguration.getPressedStateDuration());
}
if (getSettings().supportTouchOnly()) {
removeTouchHighlight();
WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData();
// use "0" as generation id to inform WebKit to use the same x/y as
// it used when processing GET_TOUCH_HIGHLIGHT_RECTS
touchUpData.mMoveGeneration = 0;
mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData);
} else if (nativePointInNavCache(contentX, contentY, slop)) {
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) {
int slop = viewToContentDimension(mNavSlop);
if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) {
EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER);
}
if (nativeHasCursorNode() && !nativeCursorIsTextInput()) {
playSoundEffect(SoundEffectConstants.CLICK);
}
}
void sendPluginDrawMsg() {
mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY);
}
/**
* Returns plugin bounds if x/y in content coordinates corresponds to a
* plugin. Otherwise a NULL rectangle is returned.
*/
Rect getPluginBounds(int x, int y) {
int slop = viewToContentDimension(mNavSlop);
if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) {
return nativeCacheHitNodeBounds();
} else {
return null;
}
}
/*
* Return true if the rect (e.g. plugin) is fully visible and maximized
* inside the WebView.
*/
boolean isRectFitOnScreen(Rect rect) {
final int rectWidth = rect.width();
final int rectHeight = rect.height();
final int viewWidth = getViewWidth();
final int viewHeight = getViewHeightWithTitle();
float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight);
scale = mZoomManager.computeScaleWithLimits(scale);
return !mZoomManager.willScaleTriggerZoom(scale)
&& contentToViewX(rect.left) >= mScrollX
&& contentToViewX(rect.right) <= mScrollX + viewWidth
&& contentToViewY(rect.top) >= mScrollY
&& contentToViewY(rect.bottom) <= mScrollY + viewHeight;
}
/*
* 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. The rect is in document
* coordinates
*/
void centerFitRect(Rect rect) {
final int rectWidth = rect.width();
final int rectHeight = rect.height();
final int viewWidth = getViewWidth();
final int viewHeight = getViewHeightWithTitle();
float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight
/ rectHeight);
scale = mZoomManager.computeScaleWithLimits(scale);
if (!mZoomManager.willScaleTriggerZoom(scale)) {
pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2,
contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2,
true, 0);
} else {
float actualScale = mZoomManager.getScale();
float oldScreenX = rect.left * actualScale - mScrollX;
float rectViewX = rect.left * scale;
float rectViewWidth = rectWidth * 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);
}
float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale)
/ (scale - actualScale);
float oldScreenY = rect.top * actualScale + getTitleHeight()
- mScrollY;
float rectViewY = rect.top * scale + getTitleHeight();
float rectViewHeight = rectHeight * 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);
}
float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale)
/ (scale - actualScale);
mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY);
mZoomManager.startZoomAnimation(scale, false);
}
}
// 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) {
// FIXME: If a subwindow is showing find, and the user touches the
// background window, it can steal focus.
if (mFindIsUp) return false;
boolean result = false;
if (inEditingMode()) {
result = mWebTextView.requestFocus(direction,
previouslyFocusedRect);
} else {
result = super.requestFocus(direction, previouslyFocusedRect);
if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) {
// 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;
measuredHeight |= MEASURED_STATE_TOO_SMALL;
}
}
} 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 {
if (measuredWidth < contentWidth) {
measuredWidth |= MEASURED_STATE_TOO_SMALL;
}
mWidthCanMeasure = false;
}
synchronized (this) {
setMeasuredDimension(measuredWidth, measuredHeight);
}
}
@Override
public boolean requestChildRectangleOnScreen(View child,
Rect rect,
boolean immediate) {
if (mNativeClass == 0) {
return false;
}
// don't scroll while in zoom animation. When it is done, we will adjust
// the necessary components (e.g., WebTextView if it is in editing mode)
if (mZoomManager.isFixedLengthAnimationInProgress()) {
return false;
}
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) {
// check if mWebViewCore has been destroyed
if (mWebViewCore == null) {
return;
}
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);
}
/**
* @hide
*/
public synchronized WebViewCore getWebViewCore() {
return mWebViewCore;
}
/**
* Used only by TouchEventQueue to store pending touch events.
*/
private static class QueuedTouch {
long mSequence;
MotionEvent mEvent; // Optional
TouchEventData mTed; // Optional
QueuedTouch mNext;
public QueuedTouch set(TouchEventData ted) {
mSequence = ted.mSequence;
mTed = ted;
mEvent = null;
mNext = null;
return this;
}
public QueuedTouch set(MotionEvent ev, long sequence) {
mEvent = MotionEvent.obtain(ev);
mSequence = sequence;
mTed = null;
mNext = null;
return this;
}
public QueuedTouch add(QueuedTouch other) {
if (other.mSequence < mSequence) {
other.mNext = this;
return other;
}
QueuedTouch insertAt = this;
while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) {
insertAt = insertAt.mNext;
}
other.mNext = insertAt.mNext;
insertAt.mNext = other;
return this;
}
}
/**
* WebView handles touch events asynchronously since some events must be passed to WebKit
* for potentially slower processing. TouchEventQueue serializes touch events regardless
* of which path they take to ensure that no events are ever processed out of order
* by WebView.
*/
private class TouchEventQueue {
private long mNextTouchSequence = Long.MIN_VALUE + 1;
private long mLastHandledTouchSequence = Long.MIN_VALUE;
private long mIgnoreUntilSequence = Long.MIN_VALUE + 1;
// Events waiting to be processed.
private QueuedTouch mTouchEventQueue;
// Known events that are waiting on a response before being enqueued.
private QueuedTouch mPreQueue;
// Pool of QueuedTouch objects saved for later use.
private QueuedTouch mQueuedTouchRecycleBin;
private int mQueuedTouchRecycleCount;
private long mLastEventTime = Long.MAX_VALUE;
private static final int MAX_RECYCLED_QUEUED_TOUCH = 15;
// milliseconds until we abandon hope of getting all of a previous gesture
private static final int QUEUED_GESTURE_TIMEOUT = 1000;
private QueuedTouch obtainQueuedTouch() {
if (mQueuedTouchRecycleBin != null) {
QueuedTouch result = mQueuedTouchRecycleBin;
mQueuedTouchRecycleBin = result.mNext;
mQueuedTouchRecycleCount--;
return result;
}
return new QueuedTouch();
}
/**
* Allow events with any currently missing sequence numbers to be skipped in processing.
*/
public void ignoreCurrentlyMissingEvents() {
mIgnoreUntilSequence = mNextTouchSequence;
// Run any events we have available and complete, pre-queued or otherwise.
runQueuedAndPreQueuedEvents();
}
private void runQueuedAndPreQueuedEvents() {
QueuedTouch qd = mPreQueue;
boolean fromPreQueue = true;
while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) {
handleQueuedTouch(qd);
QueuedTouch recycleMe = qd;
if (fromPreQueue) {
mPreQueue = qd.mNext;
} else {
mTouchEventQueue = qd.mNext;
}
recycleQueuedTouch(recycleMe);
mLastHandledTouchSequence++;
long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE;
long nextQueued = mTouchEventQueue != null ?
mTouchEventQueue.mSequence : Long.MAX_VALUE;
fromPreQueue = nextPre < nextQueued;
qd = fromPreQueue ? mPreQueue : mTouchEventQueue;
}
}
/**
* Add a TouchEventData to the pre-queue.
*
* An event in the pre-queue is an event that we know about that
* has been sent to webkit, but that we haven't received back and
* enqueued into the normal touch queue yet. If webkit ever times
* out and we need to ignore currently missing events, we'll run
* events from the pre-queue to patch the holes.
*
* @param ted TouchEventData to pre-queue
*/
public void preQueueTouchEventData(TouchEventData ted) {
QueuedTouch newTouch = obtainQueuedTouch().set(ted);
if (mPreQueue == null) {
mPreQueue = newTouch;
} else {
QueuedTouch insertionPoint = mPreQueue;
while (insertionPoint.mNext != null &&
insertionPoint.mNext.mSequence < newTouch.mSequence) {
insertionPoint = insertionPoint.mNext;
}
newTouch.mNext = insertionPoint.mNext;
insertionPoint.mNext = newTouch;
}
}
private void recycleQueuedTouch(QueuedTouch qd) {
if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) {
qd.mNext = mQueuedTouchRecycleBin;
mQueuedTouchRecycleBin = qd;
mQueuedTouchRecycleCount++;
}
}
/**
* Reset the touch event queue. This will dump any pending events
* and reset the sequence numbering.
*/
public void reset() {
mNextTouchSequence = Long.MIN_VALUE + 1;
mLastHandledTouchSequence = Long.MIN_VALUE;
mIgnoreUntilSequence = Long.MIN_VALUE + 1;
while (mTouchEventQueue != null) {
QueuedTouch recycleMe = mTouchEventQueue;
mTouchEventQueue = mTouchEventQueue.mNext;
recycleQueuedTouch(recycleMe);
}
while (mPreQueue != null) {
QueuedTouch recycleMe = mPreQueue;
mPreQueue = mPreQueue.mNext;
recycleQueuedTouch(recycleMe);
}
}
/**
* Return the next valid sequence number for tagging incoming touch events.
* @return The next touch event sequence number
*/
public long nextTouchSequence() {
return mNextTouchSequence++;
}
/**
* Enqueue a touch event in the form of TouchEventData.
* The sequence number will be read from the mSequence field of the argument.
*
* If the touch event's sequence number is the next in line to be processed, it will
* be handled before this method returns. Any subsequent events that have already
* been queued will also be processed in their proper order.
*
* @param ted Touch data to be processed in order.
* @return true if the event was processed before returning, false if it was just enqueued.
*/
public boolean enqueueTouchEvent(TouchEventData ted) {
// Remove from the pre-queue if present
QueuedTouch preQueue = mPreQueue;
if (preQueue != null) {
// On exiting this block, preQueue is set to the pre-queued QueuedTouch object
// if it was present in the pre-queue, and removed from the pre-queue itself.
if (preQueue.mSequence == ted.mSequence) {
mPreQueue = preQueue.mNext;
} else {
QueuedTouch prev = preQueue;
preQueue = null;
while (prev.mNext != null) {
if (prev.mNext.mSequence == ted.mSequence) {
preQueue = prev.mNext;
prev.mNext = preQueue.mNext;
break;
} else {
prev = prev.mNext;
}
}
}
}
if (ted.mSequence < mLastHandledTouchSequence) {
// Stale event and we already moved on; drop it. (Should not be common.)
Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) +
" received from webcore; ignoring");
return false;
}
if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) {
return false;
}
// dropStaleGestures above might have fast-forwarded us to
// an event we have already.
runNextQueuedEvents();
if (mLastHandledTouchSequence + 1 == ted.mSequence) {
if (preQueue != null) {
recycleQueuedTouch(preQueue);
preQueue = null;
}
handleQueuedTouchEventData(ted);
mLastHandledTouchSequence++;
// Do we have any more? Run them if so.
runNextQueuedEvents();
} else {
// Reuse the pre-queued object if we had it.
QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted);
mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd);
}
return true;
}
/**
* Enqueue a touch event in the form of a MotionEvent from the framework.
*
* If the touch event's sequence number is the next in line to be processed, it will
* be handled before this method returns. Any subsequent events that have already
* been queued will also be processed in their proper order.
*
* @param ev MotionEvent to be processed in order
*/
public void enqueueTouchEvent(MotionEvent ev) {
final long sequence = nextTouchSequence();
if (dropStaleGestures(ev, sequence)) {
return;
}
// dropStaleGestures above might have fast-forwarded us to
// an event we have already.
runNextQueuedEvents();
if (mLastHandledTouchSequence + 1 == sequence) {
handleQueuedMotionEvent(ev);
mLastHandledTouchSequence++;
// Do we have any more? Run them if so.
runNextQueuedEvents();
} else {
QueuedTouch qd = obtainQueuedTouch().set(ev, sequence);
mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd);
}
}
private void runNextQueuedEvents() {
QueuedTouch qd = mTouchEventQueue;
while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) {
handleQueuedTouch(qd);
QueuedTouch recycleMe = qd;
qd = qd.mNext;
recycleQueuedTouch(recycleMe);
mLastHandledTouchSequence++;
}
mTouchEventQueue = qd;
}
private boolean dropStaleGestures(MotionEvent ev, long sequence) {
if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) {
// This is to make sure that we don't attempt to process a tap
// or long press when webkit takes too long to get back to us.
// The movement will be properly confirmed when we process the
// enqueued event later.
final int dx = Math.round(ev.getX()) - mLastTouchX;
final int dy = Math.round(ev.getY()) - mLastTouchY;
if (dx * dx + dy * dy > mTouchSlopSquare) {
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
}
}
if (mTouchEventQueue == null) {
return sequence <= mLastHandledTouchSequence;
}
// If we have a new down event and it's been a while since the last event
// we saw, catch up as best we can and keep going.
if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) {
long eventTime = ev.getEventTime();
long lastHandledEventTime = mLastEventTime;
if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) {
Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " +
"Catching up.");
runQueuedAndPreQueuedEvents();
// Drop leftovers that we truly don't have.
QueuedTouch qd = mTouchEventQueue;
while (qd != null && qd.mSequence < sequence) {
QueuedTouch recycleMe = qd;
qd = qd.mNext;
recycleQueuedTouch(recycleMe);
}
mTouchEventQueue = qd;
mLastHandledTouchSequence = sequence - 1;
}
}
if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) {
QueuedTouch qd = mTouchEventQueue;
while (qd != null && qd.mSequence < mIgnoreUntilSequence) {
QueuedTouch recycleMe = qd;
qd = qd.mNext;
recycleQueuedTouch(recycleMe);
}
mTouchEventQueue = qd;
mLastHandledTouchSequence = mIgnoreUntilSequence - 1;
}
if (mPreQueue != null) {
// Drop stale prequeued events
QueuedTouch qd = mPreQueue;
while (qd != null && qd.mSequence < mIgnoreUntilSequence) {
QueuedTouch recycleMe = qd;
qd = qd.mNext;
recycleQueuedTouch(recycleMe);
}
mPreQueue = qd;
}
return sequence <= mLastHandledTouchSequence;
}
private void handleQueuedTouch(QueuedTouch qt) {
if (qt.mTed != null) {
handleQueuedTouchEventData(qt.mTed);
} else {
handleQueuedMotionEvent(qt.mEvent);
qt.mEvent.recycle();
}
}
private void handleQueuedMotionEvent(MotionEvent ev) {
mLastEventTime = ev.getEventTime();
int action = ev.getActionMasked();
if (ev.getPointerCount() > 1) { // Multi-touch
handleMultiTouchInWebView(ev);
} else {
final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector();
if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) {
// ScaleGestureDetector needs a consistent event stream to operate properly.
// It won't take any action with fewer than two pointers, but it needs to
// update internal bookkeeping state.
detector.onTouchEvent(ev);
}
handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY()));
}
}
private void handleQueuedTouchEventData(TouchEventData ted) {
if (ted.mMotionEvent != null) {
mLastEventTime = ted.mMotionEvent.getEventTime();
}
if (!ted.mReprocess) {
if (ted.mAction == 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 = ted.mNativeResult ? PREVENT_DEFAULT_YES
: PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN;
} else if (ted.mAction == 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 = ted.mNativeResult ? PREVENT_DEFAULT_YES
: PREVENT_DEFAULT_NO;
}
if (mPreventDefault == PREVENT_DEFAULT_YES) {
mTouchHighlightRegion.setEmpty();
}
} else {
if (ted.mPoints.length > 1) { // multi-touch
if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) {
mPreventDefault = PREVENT_DEFAULT_NO;
handleMultiTouchInWebView(ted.mMotionEvent);
} else {
mPreventDefault = PREVENT_DEFAULT_YES;
}
return;
}
// prevent default is not called in WebCore, so the
// message needs to be reprocessed in UI
if (!ted.mNativeResult) {
// Following is for single touch.
switch (ted.mAction) {
case MotionEvent.ACTION_DOWN:
mLastDeferTouchX = ted.mPointsInView[0].x;
mLastDeferTouchY = ted.mPointsInView[0].y;
mDeferTouchMode = TOUCH_INIT_MODE;
break;
case MotionEvent.ACTION_MOVE: {
// no snapping in defer process
int x = ted.mPointsInView[0].x;
int y = ted.mPointsInView[0].y;
if (mDeferTouchMode != TOUCH_DRAG_MODE) {
mDeferTouchMode = TOUCH_DRAG_MODE;
mLastDeferTouchX = x;
mLastDeferTouchY = y;
startScrollingLayer(x, y);
startDrag();
}
int deltaX = pinLocX((int) (mScrollX
+ mLastDeferTouchX - x))
- mScrollX;
int deltaY = pinLocY((int) (mScrollY
+ mLastDeferTouchY - y))
- mScrollY;
doDrag(deltaX, deltaY);
if (deltaX != 0) mLastDeferTouchX = x;
if (deltaY != 0) mLastDeferTouchY = y;
break;
}
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
if (mDeferTouchMode == TOUCH_DRAG_MODE) {
// no fling in defer process
mScroller.springBack(mScrollX, mScrollY, 0,
computeMaxScrollX(), 0,
computeMaxScrollY());
invalidate();
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
mDeferTouchMode = TOUCH_DONE_MODE;
break;
case WebViewCore.ACTION_DOUBLETAP:
// doDoubleTap() needs mLastTouchX/Y as anchor
mLastDeferTouchX = ted.mPointsInView[0].x;
mLastDeferTouchY = ted.mPointsInView[0].y;
mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY);
mDeferTouchMode = TOUCH_DONE_MODE;
break;
case WebViewCore.ACTION_LONGPRESS:
HitTestResult hitTest = getHitTestResult();
if (hitTest != null && hitTest.mType
!= HitTestResult.UNKNOWN_TYPE) {
performLongClick();
}
mDeferTouchMode = TOUCH_DONE_MODE;
break;
}
}
}
}
}
//-------------------------------------------------------------------------
// 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;
}
if (mBlockWebkitViewMessages
&& msg.what != WEBCORE_INITIALIZED_MSG_ID) {
// Blocking messages from webkit
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(mLastTouchX + mScrollX),
viewToContentY(mLastTouchY + mScrollY),
true);
}
break;
}
case SCROLL_SELECT_TEXT: {
if (mAutoScrollX == 0 && mAutoScrollY == 0) {
mSentAutoScrollMessage = false;
break;
}
if (mCurrentScrollingLayerId == 0) {
pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0);
} else {
scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX,
mScrollingLayerRect.top + mAutoScrollY);
}
sendEmptyMessageDelayed(
SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL);
break;
}
case UPDATE_SELECTION: {
if (mTouchMode == TOUCH_INIT_MODE
|| mTouchMode == TOUCH_SHORTPRESS_MODE
|| mTouchMode == TOUCH_SHORTPRESS_START_MODE) {
updateSelection();
}
break;
}
case SWITCH_TO_SHORTPRESS: {
mInitialHitTestResult = null; // set by updateSelection()
if (mTouchMode == TOUCH_INIT_MODE) {
if (!getSettings().supportTouchOnly()
&& 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 (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) {
removeTouchHighlight();
}
if (inFullScreenMode() || mDeferTouchProcess) {
TouchEventData ted = new TouchEventData();
ted.mAction = WebViewCore.ACTION_LONGPRESS;
ted.mIds = new int[1];
ted.mIds[0] = 0;
ted.mPoints = new Point[1];
ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX),
viewToContentY(mLastTouchY + mScrollY));
ted.mPointsInView = new Point[1];
ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY);
// 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;
ted.mNativeLayer = nativeScrollableLayer(
ted.mPoints[0].x, ted.mPoints[0].y,
ted.mNativeLayerRect, null);
ted.mSequence = mTouchEventQueue.nextTouchSequence();
mTouchEventQueue.preQueueTouchEventData(ted);
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
} else if (mPreventDefault != PREVENT_DEFAULT_YES) {
mTouchMode = TOUCH_DONE_MODE;
performLongClick();
}
break;
}
case RELEASE_SINGLE_TAP: {
doShortPress();
break;
}
case SCROLL_TO_MSG_ID: {
// arg1 = animate, arg2 = onlyIfImeIsShowing
// obj = Point(x, y)
if (msg.arg2 == 1) {
// This scroll is intended to bring the textfield into
// view, but is only necessary if the IME is showing
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm == null || !imm.isAcceptingText()
|| (!imm.isActive(WebView.this) && (!inEditingMode()
|| !imm.isActive(mWebTextView)))) {
break;
}
}
final Point p = (Point) msg.obj;
if (msg.arg1 == 1) {
spawnContentScrollTo(p.x, p.y);
} else {
setContentScrollTo(p.x, p.y);
}
break;
}
case UPDATE_ZOOM_RANGE: {
WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj;
// mScrollX contains the new minPrefWidth
mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX);
break;
}
case UPDATE_ZOOM_DENSITY: {
final float density = (Float) msg.obj;
mZoomManager.updateDefaultZoomDensity(density);
break;
}
case REPLACE_BASE_CONTENT: {
nativeReplaceBaseContent(msg.arg1);
break;
}
case NEW_PICTURE_MSG_ID: {
// called for new content
final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj;
setNewPicture(draw, true);
break;
}
case WEBCORE_INITIALIZED_MSG_ID:
// nativeCreate sets mNativeClass to a non-zero value
String drawableDir = BrowserFrame.getRawResFilename(
BrowserFrame.DRAWABLEDIR, mContext);
WindowManager windowManager =
(WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
Display display = windowManager.getDefaultDisplay();
nativeCreate(msg.arg1, drawableDir,
ActivityManager.isHighEndGfx(display));
if (mDelaySetPicture != null) {
setNewPicture(mDelaySetPicture, true);
mDelaySetPicture = null;
}
if (mIsPaused) {
nativeSetPauseDrawing(mNativeClass, true);
}
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.arg2 == mTextGeneration) {
String text = (String) msg.obj;
if (null == text) {
text = "";
}
mWebTextView.setTextAndKeepSelection(text);
}
}
break;
case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID:
displaySoftKeyboard(true);
// fall through to UPDATE_TEXT_SELECTION_MSG_ID
case UPDATE_TEXT_SELECTION_MSG_ID:
updateTextSelectionFromMessage(msg.arg1, msg.arg2,
(WebViewCore.TextSelectionData) msg.obj);
break;
case FORM_DID_BLUR:
if (inEditingMode()
&& mWebTextView.isSameTextField(msg.arg1)) {
hideSoftKeyboard();
}
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 UNHANDLED_NAV_KEY:
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()) {
updateWebTextViewPosition();
}
break;
case CLEAR_TEXT_ENTRY:
clearTextEntry();
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 REQUEST_FORM_DATA:
AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj;
if (mWebTextView.isSameTextField(msg.arg1)) {
mWebTextView.setAdapterCustom(adapter);
}
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;
}
TouchEventData ted = (TouchEventData) msg.obj;
if (mTouchEventQueue.enqueueTouchEvent(ted)) {
// WebCore is responding to us; remove pending timeout.
// It will be re-posted when needed.
removeMessages(PREVENT_DEFAULT_TIMEOUT);
}
break;
case REQUEST_KEYBOARD:
if (msg.arg1 == 0) {
hideSoftKeyboard();
} else {
displaySoftKeyboard(false);
}
break;
case FIND_AGAIN:
// Ignore if find has been dismissed.
if (mFindIsUp && mFindCallback != null) {
mFindCallback.findAll();
}
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 SCREEN_ON:
setKeepScreenOn(msg.arg1 == 1);
break;
case ENTER_FULLSCREEN_VIDEO:
int layerId = msg.arg1;
String url = (String) msg.obj;
if (mHTML5VideoViewProxy != null) {
mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url);
}
break;
case SHOW_FULLSCREEN: {
View view = (View) msg.obj;
int orientation = msg.arg1;
int npp = msg.arg2;
if (inFullScreenMode()) {
Log.w(LOGTAG, "Should not have another full screen.");
dismissFullScreenMode();
}
mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp);
mFullScreenHolder.setContentView(view);
mFullScreenHolder.show();
break;
}
case HIDE_FULLSCREEN:
dismissFullScreenMode();
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 - getVisibleTitleHeightImpl());
scrollTo(x, y);
}
break;
case CENTER_FIT_RECT:
centerFitRect((Rect)msg.obj);
break;
case SET_SCROLLBAR_MODES:
mHorizontalScrollBarMode = msg.arg1;
mVerticalScrollBarMode = msg.arg2;
break;
case SELECTION_STRING_CHANGED:
if (mAccessibilityInjector != null) {
String selectionString = (String) msg.obj;
mAccessibilityInjector.onSelectionStringChange(selectionString);
}
break;
case SET_TOUCH_HIGHLIGHT_RECTS:
@SuppressWarnings("unchecked")
ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj;
setTouchHighlightRects(rects);
break;
case SAVE_WEBARCHIVE_FINISHED:
SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj;
if (saveMessage.mCallback != null) {
saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile);
}
break;
case SET_AUTOFILLABLE:
mAutoFillData = (WebViewCore.AutoFillData) msg.obj;
if (mWebTextView != null) {
mWebTextView.setAutoFillable(mAutoFillData.getQueryId());
rebuildWebTextView();
}
break;
case AUTOFILL_COMPLETE:
if (mWebTextView != null) {
// Clear the WebTextView adapter when AutoFill finishes
// so that the drop down gets cleared.
mWebTextView.setAdapterCustom(null);
}
break;
case SELECT_AT:
nativeSelectAt(msg.arg1, msg.arg2);
break;
default:
super.handleMessage(msg);
break;
}
}
}
private void setTouchHighlightRects(ArrayList<Rect> rects) {
invalidate(mTouchHighlightRegion.getBounds());
mTouchHighlightRegion.setEmpty();
if (rects != null) {
for (Rect rect : rects) {
Rect viewRect = contentToViewRect(rect);
// some sites, like stories in nytimes.com, set
// mouse event handler in the top div. It is not
// user friendly to highlight the div if it covers
// more than half of the screen.
if (viewRect.width() < getWidth() >> 1
|| viewRect.height() < getHeight() >> 1) {
mTouchHighlightRegion.union(viewRect);
} else {
Log.w(LOGTAG, "Skip the huge selection rect:"
+ viewRect);
}
}
invalidate(mTouchHighlightRegion.getBounds());
}
}
/** @hide Called by JNI when pages are swapped (only occurs with hardware
* acceleration) */
protected void pageSwapCallback(boolean notifyAnimationStarted) {
if (inEditingMode()) {
didUpdateWebTextViewDimensions(ANYWHERE);
}
if (notifyAnimationStarted) {
mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED);
}
}
void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) {
if (mNativeClass == 0) {
if (mDelaySetPicture != null) {
throw new IllegalStateException("Tried to setNewPicture with"
+ " a delay picture already set! (memory leak)");
}
// Not initialized yet, delay set
mDelaySetPicture = draw;
return;
}
WebViewCore.ViewState viewState = draw.mViewState;
boolean isPictureAfterFirstLayout = viewState != null;
if (updateBaseLayer) {
// Request a callback on pageSwap (to reposition the webtextview)
boolean registerPageSwapCallback =
!mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode();
setBaseLayer(draw.mBaseLayer, draw.mInvalRegion,
getSettings().getShowVisualIndicator(),
isPictureAfterFirstLayout, registerPageSwapCallback);
}
final Point viewSize = draw.mViewSize;
// 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;
// Don't send scroll event for picture coming from webkit,
// since the new picture may cause a scroll event to override
// the saved history scroll position.
mSendScrollEvent = false;
recordNewContentSize(draw.mContentSize.x,
draw.mContentSize.y, updateLayout);
if (isPictureAfterFirstLayout) {
// Reset the last sent data here since dealing with new page.
mLastWidthSent = 0;
mZoomManager.onFirstLayout(draw);
int scrollX = viewState.mShouldStartScrolledRight
? getContentWidth() : viewState.mScrollX;
int scrollY = viewState.mScrollY;
setContentScrollTo(scrollX, scrollY);
if (!mDrawHistory) {
// 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();
}
}
mSendScrollEvent = true;
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());
}
// update the zoom information based on the new picture
mZoomManager.onNewPicture(draw);
if (draw.mFocusSizeChanged && inEditingMode()) {
mFocusSizeChanged = true;
}
if (isPictureAfterFirstLayout) {
mViewManager.postReadyToDrawAll();
}
}
/**
* 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;
@Override
public String toString() {
return mString;
}
}
/**
* Subclass ArrayAdapter so we can disable OptionGroupLabels,
* and allow filtering.
*/
private class MyArrayListAdapter extends ArrayAdapter<Container> {
public MyArrayListAdapter() {
super(mContext,
mMultiple ? com.android.internal.R.layout.select_dialog_multichoice :
com.android.internal.R.layout.webview_select_singlechoice,
mContainers);
}
@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 uses CheckedTextViews.
// If that changes, the class cast will no longer be valid.
if (mMultiple) {
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;
}
@Override
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 run() {
final ListView listView = (ListView) LayoutInflater.from(mContext)
.inflate(com.android.internal.R.layout.select_dialog, null);
final MyArrayListAdapter adapter = new MyArrayListAdapter();
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);
}});
}
mListBoxDialog = 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) {
// Rather than sending the message right away, send it
// after the page regains focus.
mListBoxMessage = Message.obtain(null,
EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0);
mListBoxDialog.dismiss();
mListBoxDialog = null;
}
});
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);
}
}
mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface dialog) {
mWebViewCore.sendMessage(
EventHub.SINGLE_LISTBOX_CHOICE, -2, 0);
mListBoxDialog = null;
}
});
mListBoxDialog.show();
}
}
private Message mListBoxMessage;
/*
* 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));
}
/*
* 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 to remove the WebTextView, if present.
* @param stopPaintingCaret Stop drawing the blinking caret if true.
* called by JNI
*/
@SuppressWarnings("unused")
private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) {
if (removeFocus) {
clearTextEntry();
}
mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST,
stopPaintingCaret ? 1 : 0, 0,
cursorData());
}
/**
* Called by JNI to send a message to the webcore thread that the user
* touched the webpage.
* @param touchGeneration Generation number of the touch, to ignore touches
* after a new one has been generated.
* @param frame Pointer to the frame holding the node that was touched.
* @param node Pointer to the node touched.
* @param x x-position of the touch.
* @param y y-position of the touch.
*/
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;
touchUpData.mNativeLayer = nativeScrollableLayer(
x, y, touchUpData.mNativeLayerRect, null);
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 * mZoomManager.getInvScale());
}
/**
* Called by JNI to invalidate view
*/
private void viewInvalidate() {
invalidate();
}
/**
* Pass the key directly to the page. This assumes that
* nativePageShouldHandleShiftAndArrows() returned true.
*/
private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) {
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, (metaState & KeyEvent.META_SHIFT_ON)
| (metaState & KeyEvent.META_ALT_ON)
| (metaState & KeyEvent.META_SYM_ON)
, KeyCharacterMap.VIRTUAL_KEYBOARD, 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;
}
mInitialHitTestResult = null;
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) {
return keyHandled;
}
Rect contentCursorRingBounds = nativeGetCursorRingBounds();
if (contentCursorRingBounds.isEmpty()) return keyHandled;
Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds);
// set last touch so that context menu related functions will work
mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2;
mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2;
if (mHeightCanMeasure == false) {
return keyHandled;
}
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);
return keyHandled;
}
/**
* @return Whether accessibility script has been injected.
*/
private boolean accessibilityScriptInjected() {
// TODO: Maybe the injected script should announce its presence in
// the page meta-tag so the nativePageShouldHandleShiftAndArrows
// will check that as one of the conditions it looks for
return mAccessibilityScriptInjected;
}
/**
* 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
*/
@Override
public void setBackgroundColor(int color) {
mBackgroundColor = color;
mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color);
}
/**
* @deprecated This method is now obsolete.
*/
@Deprecated
public void debugDump() {
checkThread();
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) {
calcOurContentVisibleRectF(mVisibleContentRect);
nativeDraw(canvas, mVisibleContentRect, 0, 0, false);
}
/**
* Enable the communication b/t the webView and VideoViewProxy
*
* @hide only used by the Browser
*/
public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) {
mHTML5VideoViewProxy = proxy;
}
/**
* 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.
* @hide
*/
protected 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);
}
/*package*/ void autoFillForm(int autoFillQueryId) {
mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0);
}
/* package */ ViewManager getViewManager() {
return mViewManager;
}
private static void checkThread() {
if (Looper.myLooper() != Looper.getMainLooper()) {
Throwable throwable = new Throwable(
"Warning: A WebView method was called on thread '" +
Thread.currentThread().getName() + "'. " +
"All WebView methods must be called on the UI thread. " +
"Future versions of WebView may not support use on other threads.");
Log.w(LOGTAG, Log.getStackTraceString(throwable));
StrictMode.onWebViewMethodCalledOnWrongThread(throwable);
}
}
/** @hide send content invalidate */
protected void contentInvalidateAll() {
if (mWebViewCore != null && !mBlockWebkitViewMessages) {
mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL);
}
}
/** @hide call pageSwapCallback upon next page swap */
protected void registerPageSwapCallback() {
nativeRegisterPageSwapCallback();
}
/**
* Begin collecting per-tile profiling data
*
* @hide only used by profiling tests
*/
public void tileProfilingStart() {
nativeTileProfilingStart();
}
/**
* Return per-tile profiling data
*
* @hide only used by profiling tests
*/
public float tileProfilingStop() {
return nativeTileProfilingStop();
}
/** @hide only used by profiling tests */
public void tileProfilingClear() {
nativeTileProfilingClear();
}
/** @hide only used by profiling tests */
public int tileProfilingNumFrames() {
return nativeTileProfilingNumFrames();
}
/** @hide only used by profiling tests */
public int tileProfilingNumTilesInFrame(int frame) {
return nativeTileProfilingNumTilesInFrame(frame);
}
/** @hide only used by profiling tests */
public int tileProfilingGetInt(int frame, int tile, String key) {
return nativeTileProfilingGetInt(frame, tile, key);
}
/** @hide only used by profiling tests */
public float tileProfilingGetFloat(int frame, int tile, String key) {
return nativeTileProfilingGetFloat(frame, tile, key);
}
private native int nativeCacheHitFramePointer();
private native boolean nativeCacheHitIsPlugin();
private native Rect nativeCacheHitNodeBounds();
private native int nativeCacheHitNodePointer();
/* package */ native void nativeClearCursor();
private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx);
private native int nativeCursorFramePointer();
private native Rect nativeCursorNodeBounds();
private native int nativeCursorNodePointer();
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();
/**
* Draw the picture set with a background color and extra. If
* "splitIfNeeded" is true and the return value is not 0, the return value
* MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the
* native allocation can be freed.
*/
private native int nativeDraw(Canvas canvas, RectF visibleRect,
int color, int extra, boolean splitIfNeeded);
private native void nativeDumpDisplayTree(String urlOrNull);
private native boolean nativeEvaluateLayersAnimations(int nativeInstance);
private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect,
Rect viewRect, RectF visibleRect, float scale, int extras);
private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect,
RectF visibleRect);
private native void nativeExtendSelection(int x, int y);
private native int nativeFindAll(String findLower, String findUpper,
boolean sameAsLastSearch);
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 boolean nativeFocusCandidateIsAutoComplete();
/* package */ native boolean nativeFocusCandidateIsSpellcheck();
/* package */ native String nativeFocusCandidateName();
private native Rect nativeFocusCandidateNodeBounds();
/**
* @return A Rect with left, top, right, bottom set to the corresponding
* padding values in the focus candidate, if it is a textfield/textarea with
* a style. Otherwise return null. This is not actually a rectangle; Rect
* is being used to pass four integers.
*/
private native Rect nativeFocusCandidatePaddingRect();
/* package */ native int nativeFocusCandidatePointer();
private native String nativeFocusCandidateText();
/* package */ native float nativeFocusCandidateTextSize();
/* package */ native int nativeFocusCandidateLineHeight();
/**
* Returns an integer corresponding to WebView.cpp::type.
* See WebTextView.setType()
*/
private native int nativeFocusCandidateType();
private native int nativeFocusCandidateLayerId();
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 boolean nativeHitSelection(int x, int y);
private native String nativeImageURI(int x, int y);
private native void nativeInstrumentReport();
private native Rect nativeLayerBounds(int layer);
/* 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);
/**
* @return true if the page should get the shift and arrow keys, rather
* than select text/navigation.
*
* If the focus is a plugin, or if the focus and cursor match and are
* a contentEditable element, then the page should handle these keys.
*/
private native boolean nativePageShouldHandleShiftAndArrows();
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 nativeResetSelection();
private native Point nativeSelectableText();
private native void nativeSelectAll();
private native void nativeSelectBestAt(Rect rect);
private native void nativeSelectAt(int x, int y);
private native int nativeSelectionX();
private native int nativeSelectionY();
private native int nativeFindIndex();
private native void nativeSetExtendSelection();
private native void nativeSetFindIsEmpty();
private native void nativeSetFindIsUp(boolean isUp);
private native void nativeSetHeightCanMeasure(boolean measure);
private native void nativeSetBaseLayer(int layer, Region invalRegion,
boolean showVisualIndicator, boolean isPictureAfterFirstLayout,
boolean registerPageSwapCallback);
private native int nativeGetBaseLayer();
private native void nativeShowCursorTimed();
private native void nativeReplaceBaseContent(int content);
private native void nativeCopyBaseContentToPicture(Picture pict);
private native boolean nativeHasContent();
private native void nativeSetSelectionPointer(int nativeInstance,
boolean set, float scale, int x, int y);
private native boolean nativeStartSelection(int x, int y);
private native void nativeStopGL();
private native Rect nativeSubtractLayers(Rect content);
private native int nativeTextGeneration();
private native void nativeRegisterPageSwapCallback();
private native void nativeTileProfilingStart();
private native float nativeTileProfilingStop();
private native void nativeTileProfilingClear();
private native int nativeTileProfilingNumFrames();
private native int nativeTileProfilingNumTilesInFrame(int frame);
private native int nativeTileProfilingGetInt(int frame, int tile, String key);
private native float nativeTileProfilingGetFloat(int frame, int tile, String key);
// 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);
private native boolean nativeWordSelection(int x, int y);
// return NO_LEFTEDGE means failure.
static final int NO_LEFTEDGE = -1;
native int nativeGetBlockLeftEdge(int x, int y, float scale);
private native void nativeUseHardwareAccelSkia(boolean enabled);
// Returns a pointer to the scrollable LayerAndroid at the given point.
private native int nativeScrollableLayer(int x, int y, Rect scrollRect,
Rect scrollBounds);
/**
* Scroll the specified layer.
* @param layer Id of the layer to scroll, as determined by nativeScrollableLayer.
* @param newX Destination x position to which to scroll.
* @param newY Destination y position to which to scroll.
* @return True if the layer is successfully scrolled.
*/
private native boolean nativeScrollLayer(int layer, int newX, int newY);
private native void nativeSetIsScrolling(boolean isScrolling);
private native int nativeGetBackgroundColor();
native boolean nativeSetProperty(String key, String value);
native String nativeGetProperty(String key);
private native void nativeGetTextSelectionRegion(int instance, Region region);
private native void nativeGetSelectionHandles(int instance, int[] handles);
/**
* See {@link ComponentCallbacks2} for the trim levels and descriptions
*/
private static native void nativeOnTrimMemory(int level);
private static native void nativeSetPauseDrawing(int instance, boolean pause);
}