/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.webkit;
import android.annotation.Widget;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnCancelListener;
import android.content.pm.PackageManager;
import android.database.DataSetObserver;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Interpolator;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Picture;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region;
import android.graphics.Shader;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.net.http.SslCertificate;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.text.IClipboard;
import android.text.Selection;
import android.text.Spannable;
import android.util.AttributeSet;
import android.util.EventLog;
import android.util.Log;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;
import android.view.SoundEffectConstants;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.animation.AlphaAnimation;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.webkit.WebTextView.AutoCompleteAdapter;
import android.webkit.WebViewCore.EventHub;
import android.webkit.WebViewCore.TouchEventData;
import android.widget.AbsoluteLayout;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.Scroller;
import android.widget.Toast;
import android.widget.ZoomButtonsController;
import android.widget.ZoomControls;
import android.widget.AdapterView.OnItemClickListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import junit.framework.Assert;
/**
* <p>A View that displays web pages. This class is the basis upon which you
* can roll your own web browser or simply display some online content within your Activity.
* It uses the WebKit rendering engine to display
* web pages and includes methods to navigate forward and backward
* through a history, zoom in and out, perform text searches and more.</p>
* <p>To enable the built-in zoom, set
* {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)}
* (introduced in API version 3).
* <p>Note that, in order for your Activity to access the Internet and load web pages
* in a WebView, you must add the {@code INTERNET} permissions to your
* Android Manifest file:</p>
* <pre><uses-permission android:name="android.permission.INTERNET" /></pre>
*
* <p>This must be a child of the <a
* href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a>
* element.</p>
*
* <h3>Basic usage</h3>
*
* <p>By default, a WebView provides no browser-like widgets, does not
* enable JavaScript and web page errors are ignored. If your goal is only
* to display some HTML as a part of your UI, this is probably fine;
* the user won't need to interact with the web page beyond reading
* it, and the web page won't need to interact with the user. If you
* actually want a full-blown web browser, then you probably want to
* invoke the Browser application with a URL Intent rather than show it
* with a WebView. For example:
* <pre>
* Uri uri = Uri.parse("http://www.example.com");
* Intent intent = new Intent(Intent.ACTION_VIEW, uri);
* startActivity(intent);
* </pre>
* <p>See {@link android.content.Intent} for more information.</p>
*
* <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout,
* or set the entire Activity window as a WebView during {@link
* android.app.Activity#onCreate(Bundle) onCreate()}:</p>
* <pre class="prettyprint">
* WebView webview = new WebView(this);
* setContentView(webview);
* </pre>
*
* <p>Then load the desired web page:</p>
* <pre>
* // Simplest usage: note that an exception will NOT be thrown
* // if there is an error loading this page (see below).
* webview.loadUrl("http://slashdot.org/");
*
* // OR, you can also load from an HTML string:
* String summary = "<html><body>You scored <b>192</b> points.</body></html>";
* webview.loadData(summary, "text/html", "utf-8");
* // ... although note that there are restrictions on what this HTML can do.
* // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link
* #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info.
* </pre>
*
* <p>A WebView has several customization points where you can add your
* own behavior. These are:</p>
*
* <ul>
* <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass.
* This class is called when something that might impact a
* browser UI happens, for instance, progress updates and
* JavaScript alerts are sent here (see <a
* href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>).
* </li>
* <li>Creating and setting a {@link android.webkit.WebViewClient} subclass.
* It will be called when things happen that impact the
* rendering of the content, eg, errors or form submissions. You
* can also intercept URL loading here (via {@link
* android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String)
* shouldOverrideUrlLoading()}).</li>
* <li>Modifying the {@link android.webkit.WebSettings}, such as
* enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean)
* setJavaScriptEnabled()}. </li>
* <li>Adding JavaScript-to-Java interfaces with the {@link
* android.webkit.WebView#addJavascriptInterface} method.
* This lets you bind Java objects into the WebView so they can be
* controlled from the web pages JavaScript.</li>
* </ul>
*
* <p>Here's a more complicated example, showing error handling,
* settings, and progress notification:</p>
*
* <pre class="prettyprint">
* // Let's display the progress in the activity title bar, like the
* // browser app does.
* getWindow().requestFeature(Window.FEATURE_PROGRESS);
*
* webview.getSettings().setJavaScriptEnabled(true);
*
* final Activity activity = this;
* webview.setWebChromeClient(new WebChromeClient() {
* public void onProgressChanged(WebView view, int progress) {
* // Activities and WebViews measure progress with different scales.
* // The progress meter will automatically disappear when we reach 100%
* activity.setProgress(progress * 1000);
* }
* });
* webview.setWebViewClient(new WebViewClient() {
* public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
* Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show();
* }
* });
*
* webview.loadUrl("http://slashdot.org/");
* </pre>
*
* <h3>Cookie and window management</h3>
*
* <p>For obvious security reasons, your application has its own
* cache, cookie store etc.—it does not share the Browser
* application's data. Cookies are managed on a separate thread, so
* operations like index building don't block the UI
* thread. Follow the instructions in {@link android.webkit.CookieSyncManager}
* if you want to use cookies in your application.
* </p>
*
* <p>By default, requests by the HTML to open new windows are
* ignored. This is true whether they be opened by JavaScript or by
* the target attribute on a link. You can customize your
* {@link WebChromeClient} to provide your own behaviour for opening multiple windows,
* and render them in whatever manner you want.</p>
*
* <p>The standard behavior for an Activity is to be destroyed and
* recreated when the device orientation or any other configuration changes. This will cause
* the WebView to reload the current page. If you don't want that, you
* can set your Activity to handle the {@code orientation} and {@code keyboardHidden}
* changes, and then just leave the WebView alone. It'll automatically
* re-orient itself as appropriate. Read <a
* href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for
* more information about how to handle configuration changes during runtime.</p>
*
*
* <h3>Building web pages to support different screen densities</h3>
*
* <p>The screen density of a device is based on the screen resolution. A screen with low density
* has fewer available pixels per inch, where a screen with high density
* has more — sometimes significantly more — pixels per inch. The density of a
* screen is important because, other things being equal, a UI element (such as a button) whose
* height and width are defined in terms of screen pixels will appear larger on the lower density
* screen and smaller on the higher density screen.
* For simplicity, Android collapses all actual screen densities into three generalized densities:
* high, medium, and low.</p>
* <p>By default, WebView scales a web page so that it is drawn at a size that matches the default
* appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen
* (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels
* are bigger).
* Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help
* you (as a web developer) target screens with different screen densities.</p>
* <p>Here's a summary of the features you can use to handle different screen densities:</p>
* <ul>
* <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the
* default scaling factor used for the current device. For example, if the value of {@code
* window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device
* and default scaling is not applied to the web page; if the value is "1.5", then the device is
* considered a high density device (hdpi) and the page content is scaled 1.5x; if the
* value is "0.75", then the device is considered a low density device (ldpi) and the content is
* scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property
* (discussed below), then you can stop this default scaling behavior.</li>
* <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen
* densities for which this style sheet is to be used. The corresponding value should be either
* "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium
* density, or high density screens, respectively. For example:
* <pre>
* <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre>
* <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5,
* which is the high density pixel ratio.</p>
* </li>
* <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use
* this to specify the target density for which the web page is designed, using the following
* values:
* <ul>
* <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never
* occurs.</li>
* <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down
* as appropriate.</li>
* <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and
* low density screens scale down. This is also the default behavior.</li>
* <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up
* as appropriate.</li>
* <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted
* values are 70-400).</li>
* </ul>
* <p>Here's an example meta tag to specify the target density:</p>
* <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li>
* </ul>
* <p>If you want to modify your web page for different densities, by using the {@code
* -webkit-device-pixel-ratio} CSS media query and/or the {@code
* window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta
* property to {@code device-dpi}. This stops Android from performing scaling in your web page and
* allows you to make the necessary adjustments for each density via CSS and JavaScript.</p>
*
*
*/
@Widget
public class WebView extends AbsoluteLayout
implements ViewTreeObserver.OnGlobalFocusChangeListener,
ViewGroup.OnHierarchyChangeListener {
// enable debug output for drag trackers
private static final boolean DEBUG_DRAG_TRACKER = false;
// if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing
// the screen all-the-time. Good for profiling our drawing code
static private final boolean AUTO_REDRAW_HACK = false;
// true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK
private boolean mAutoRedraw;
static final String LOGTAG = "webview";
private static class ExtendedZoomControls extends FrameLayout {
public ExtendedZoomControls(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater inflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true);
mPlusMinusZoomControls = (ZoomControls) findViewById(
com.android.internal.R.id.zoomControls);
findViewById(com.android.internal.R.id.zoomMagnify).setVisibility(
View.GONE);
}
public void show(boolean showZoom, boolean canZoomOut) {
mPlusMinusZoomControls.setVisibility(
showZoom ? View.VISIBLE : View.GONE);
fade(View.VISIBLE, 0.0f, 1.0f);
}
public void hide() {
fade(View.GONE, 1.0f, 0.0f);
}
private void fade(int visibility, float startAlpha, float endAlpha) {
AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha);
anim.setDuration(500);
startAnimation(anim);
setVisibility(visibility);
}
public boolean hasFocus() {
return mPlusMinusZoomControls.hasFocus();
}
public void setOnZoomInClickListener(OnClickListener listener) {
mPlusMinusZoomControls.setOnZoomInClickListener(listener);
}
public void setOnZoomOutClickListener(OnClickListener listener) {
mPlusMinusZoomControls.setOnZoomOutClickListener(listener);
}
ZoomControls mPlusMinusZoomControls;
}
/**
* Transportation object for returning WebView across thread boundaries.
*/
public class WebViewTransport {
private WebView mWebview;
/**
* Set the WebView to the transportation object.
* @param webview The WebView to transport.
*/
public synchronized void setWebView(WebView webview) {
mWebview = webview;
}
/**
* Return the WebView object.
* @return WebView The transported WebView object.
*/
public synchronized WebView getWebView() {
return mWebview;
}
}
// A final CallbackProxy shared by WebViewCore and BrowserFrame.
private final CallbackProxy mCallbackProxy;
private final WebViewDatabase mDatabase;
// SSL certificate for the main top-level page (if secure)
private SslCertificate mCertificate;
// Native WebView pointer that is 0 until the native object has been
// created.
private int mNativeClass;
// This would be final but it needs to be set to null when the WebView is
// destroyed.
private WebViewCore mWebViewCore;
// Handler for dispatching UI messages.
/* package */ final Handler mPrivateHandler = new PrivateHandler();
private WebTextView mWebTextView;
// Used to ignore changes to webkit text that arrives to the UI side after
// more key events.
private int mTextGeneration;
// Used by WebViewCore to create child views.
/* package */ final ViewManager mViewManager;
// Used to display in full screen mode
PluginFullScreenHolder mFullScreenHolder;
/**
* Position of the last touch event.
*/
private float mLastTouchX;
private float mLastTouchY;
/**
* Time of the last touch event.
*/
private long mLastTouchTime;
/**
* Time of the last time sending touch event to WebViewCore
*/
private long mLastSentTouchTime;
/**
* The minimum elapsed time before sending another ACTION_MOVE event to
* WebViewCore. This really should be tuned for each type of the devices.
* For example in Google Map api test case, it takes Dream device at least
* 150ms to do a full cycle in the WebViewCore by processing a touch event,
* triggering the layout and drawing the picture. While the same process
* takes 60+ms on the current high speed device. If we make
* TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent
* to WebViewCore queue and the real layout and draw events will be pushed
* to further, which slows down the refresh rate. Choose 50 to favor the
* current high speed devices. For Dream like devices, 100 is a better
* choice. Maybe make this in the buildspec later.
*/
private static final int TOUCH_SENT_INTERVAL = 50;
private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL;
/**
* Helper class to get velocity for fling
*/
VelocityTracker mVelocityTracker;
private int mMaximumFling;
private float mLastVelocity;
private float mLastVelX;
private float mLastVelY;
/**
* Touch mode
*/
private int mTouchMode = TOUCH_DONE_MODE;
private static final int TOUCH_INIT_MODE = 1;
private static final int TOUCH_DRAG_START_MODE = 2;
private static final int TOUCH_DRAG_MODE = 3;
private static final int TOUCH_SHORTPRESS_START_MODE = 4;
private static final int TOUCH_SHORTPRESS_MODE = 5;
private static final int TOUCH_DOUBLE_TAP_MODE = 6;
private static final int TOUCH_DONE_MODE = 7;
private static final int TOUCH_SELECT_MODE = 8;
private static final int TOUCH_PINCH_DRAG = 9;
// Whether to forward the touch events to WebCore
private boolean mForwardTouchEvents = false;
// Whether to prevent default during touch. The initial value depends on
// mForwardTouchEvents. If WebCore wants all the touch events, it says yes
// for touch down. Otherwise UI will wait for the answer of the first
// confirmed move before taking over the control.
private static final int PREVENT_DEFAULT_NO = 0;
private static final int PREVENT_DEFAULT_MAYBE_YES = 1;
private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2;
private static final int PREVENT_DEFAULT_YES = 3;
private static final int PREVENT_DEFAULT_IGNORE = 4;
private int mPreventDefault = PREVENT_DEFAULT_IGNORE;
// true when the touch movement exceeds the slop
private boolean mConfirmMove;
// if true, touch events will be first processed by WebCore, if prevent
// default is not set, the UI will continue handle them.
private boolean mDeferTouchProcess;
// to avoid interfering with the current touch events, track them
// separately. Currently no snapping or fling in the deferred process mode
private int mDeferTouchMode = TOUCH_DONE_MODE;
private float mLastDeferTouchX;
private float mLastDeferTouchY;
// To keep track of whether the current drag was initiated by a WebTextView,
// so that we know not to hide the cursor
boolean mDragFromTextInput;
// Whether or not to draw the cursor ring.
private boolean mDrawCursorRing = true;
// true if onPause has been called (and not onResume)
private boolean mIsPaused;
// true if, during a transition to a new page, we're delaying
// deleting a root layer until there's something to draw of the new page.
private boolean mDelayedDeleteRootLayer;
/**
* Customizable constant
*/
// pre-computed square of ViewConfiguration.getScaledTouchSlop()
private int mTouchSlopSquare;
// pre-computed square of ViewConfiguration.getScaledDoubleTapSlop()
private int mDoubleTapSlopSquare;
// pre-computed density adjusted navigation slop
private int mNavSlop;
// This should be ViewConfiguration.getTapTimeout()
// But system time out is 100ms, which is too short for the browser.
// In the browser, if it switches out of tap too soon, jump tap won't work.
private static final int TAP_TIMEOUT = 200;
// This should be ViewConfiguration.getLongPressTimeout()
// But system time out is 500ms, which is too short for the browser.
// With a short timeout, it's difficult to treat trigger a short press.
private static final int LONG_PRESS_TIMEOUT = 1000;
// needed to avoid flinging after a pause of no movement
private static final int MIN_FLING_TIME = 250;
// draw unfiltered after drag is held without movement
private static final int MOTIONLESS_TIME = 100;
// The time that the Zoom Controls are visible before fading away
private static final long ZOOM_CONTROLS_TIMEOUT =
ViewConfiguration.getZoomControlsTimeout();
// The amount of content to overlap between two screens when going through
// pages with the space bar, in pixels.
private static final int PAGE_SCROLL_OVERLAP = 24;
/**
* These prevent calling requestLayout if either dimension is fixed. This
* depends on the layout parameters and the measure specs.
*/
boolean mWidthCanMeasure;
boolean mHeightCanMeasure;
// Remember the last dimensions we sent to the native side so we can avoid
// sending the same dimensions more than once.
int mLastWidthSent;
int mLastHeightSent;
private int mContentWidth; // cache of value from WebViewCore
private int mContentHeight; // cache of value from WebViewCore
// Need to have the separate control for horizontal and vertical scrollbar
// style than the View's single scrollbar style
private boolean mOverlayHorizontalScrollbar = true;
private boolean mOverlayVerticalScrollbar = false;
// our standard speed. this way small distances will be traversed in less
// time than large distances, but we cap the duration, so that very large
// distances won't take too long to get there.
private static final int STD_SPEED = 480; // pixels per second
// time for the longest scroll animation
private static final int MAX_DURATION = 750; // milliseconds
private static final int SLIDE_TITLE_DURATION = 500; // milliseconds
private Scroller mScroller;
private boolean mWrapContent;
private static final int MOTIONLESS_FALSE = 0;
private static final int MOTIONLESS_PENDING = 1;
private static final int MOTIONLESS_TRUE = 2;
private static final int MOTIONLESS_IGNORE = 3;
private int mHeldMotionless;
// whether support multi-touch
private boolean mSupportMultiTouch;
// use the framework's ScaleGestureDetector to handle multi-touch
private ScaleGestureDetector mScaleDetector;
// the anchor point in the document space where VIEW_SIZE_CHANGED should
// apply to
private int mAnchorX;
private int mAnchorY;
/*
* Private message ids
*/
private static final int REMEMBER_PASSWORD = 1;
private static final int NEVER_REMEMBER_PASSWORD = 2;
private static final int SWITCH_TO_SHORTPRESS = 3;
private static final int SWITCH_TO_LONGPRESS = 4;
private static final int RELEASE_SINGLE_TAP = 5;
private static final int REQUEST_FORM_DATA = 6;
private static final int RESUME_WEBCORE_PRIORITY = 7;
private static final int DRAG_HELD_MOTIONLESS = 8;
private static final int AWAKEN_SCROLL_BARS = 9;
private static final int PREVENT_DEFAULT_TIMEOUT = 10;
private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD;
private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT;
/*
* Package message ids
*/
//! arg1=x, arg2=y
static final int SCROLL_TO_MSG_ID = 101;
static final int SCROLL_BY_MSG_ID = 102;
//! arg1=x, arg2=y
static final int SPAWN_SCROLL_TO_MSG_ID = 103;
//! arg1=x, arg2=y
static final int SYNC_SCROLL_TO_MSG_ID = 104;
static final int NEW_PICTURE_MSG_ID = 105;
static final int UPDATE_TEXT_ENTRY_MSG_ID = 106;
static final int WEBCORE_INITIALIZED_MSG_ID = 107;
static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108;
static final int UPDATE_ZOOM_RANGE = 109;
static final int MOVE_OUT_OF_PLUGIN = 110;
static final int CLEAR_TEXT_ENTRY = 111;
static final int UPDATE_TEXT_SELECTION_MSG_ID = 112;
static final int SHOW_RECT_MSG_ID = 113;
static final int LONG_PRESS_CENTER = 114;
static final int PREVENT_TOUCH_ID = 115;
static final int WEBCORE_NEED_TOUCH_EVENTS = 116;
// obj=Rect in doc coordinates
static final int INVAL_RECT_MSG_ID = 117;
static final int REQUEST_KEYBOARD = 118;
static final int DO_MOTION_UP = 119;
static final int SHOW_FULLSCREEN = 120;
static final int HIDE_FULLSCREEN = 121;
static final int DOM_FOCUS_CHANGED = 122;
static final int IMMEDIATE_REPAINT_MSG_ID = 123;
static final int SET_ROOT_LAYER_MSG_ID = 124;
static final int RETURN_LABEL = 125;
static final int FIND_AGAIN = 126;
static final int CENTER_FIT_RECT = 127;
static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128;
static final int SET_SCROLLBAR_MODES = 129;
private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID;
private static final int LAST_PACKAGE_MSG_ID = SET_SCROLLBAR_MODES;
static final String[] HandlerPrivateDebugString = {
"REMEMBER_PASSWORD", // = 1;
"NEVER_REMEMBER_PASSWORD", // = 2;
"SWITCH_TO_SHORTPRESS", // = 3;
"SWITCH_TO_LONGPRESS", // = 4;
"RELEASE_SINGLE_TAP", // = 5;
"REQUEST_FORM_DATA", // = 6;
"RESUME_WEBCORE_PRIORITY", // = 7;
"DRAG_HELD_MOTIONLESS", // = 8;
"AWAKEN_SCROLL_BARS", // = 9;
"PREVENT_DEFAULT_TIMEOUT" // = 10;
};
static final String[] HandlerPackageDebugString = {
"SCROLL_TO_MSG_ID", // = 101;
"SCROLL_BY_MSG_ID", // = 102;
"SPAWN_SCROLL_TO_MSG_ID", // = 103;
"SYNC_SCROLL_TO_MSG_ID", // = 104;
"NEW_PICTURE_MSG_ID", // = 105;
"UPDATE_TEXT_ENTRY_MSG_ID", // = 106;
"WEBCORE_INITIALIZED_MSG_ID", // = 107;
"UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108;
"UPDATE_ZOOM_RANGE", // = 109;
"MOVE_OUT_OF_PLUGIN", // = 110;
"CLEAR_TEXT_ENTRY", // = 111;
"UPDATE_TEXT_SELECTION_MSG_ID", // = 112;
"SHOW_RECT_MSG_ID", // = 113;
"LONG_PRESS_CENTER", // = 114;
"PREVENT_TOUCH_ID", // = 115;
"WEBCORE_NEED_TOUCH_EVENTS", // = 116;
"INVAL_RECT_MSG_ID", // = 117;
"REQUEST_KEYBOARD", // = 118;
"DO_MOTION_UP", // = 119;
"SHOW_FULLSCREEN", // = 120;
"HIDE_FULLSCREEN", // = 121;
"DOM_FOCUS_CHANGED", // = 122;
"IMMEDIATE_REPAINT_MSG_ID", // = 123;
"SET_ROOT_LAYER_MSG_ID", // = 124;
"RETURN_LABEL", // = 125;
"FIND_AGAIN", // = 126;
"CENTER_FIT_RECT", // = 127;
"REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128;
"SET_SCROLLBAR_MODES" // = 129;
};
// If the site doesn't use the viewport meta tag to specify the viewport,
// use DEFAULT_VIEWPORT_WIDTH as the default viewport width
static final int DEFAULT_VIEWPORT_WIDTH = 800;
// normally we try to fit the content to the minimum preferred width
// calculated by the Webkit. To avoid the bad behavior when some site's
// minimum preferred width keeps growing when changing the viewport width or
// the minimum preferred width is huge, an upper limit is needed.
static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH;
// default scale limit. Depending on the display density
private static float DEFAULT_MAX_ZOOM_SCALE;
private static float DEFAULT_MIN_ZOOM_SCALE;
// scale limit, which can be set through viewport meta tag in the web page
private float mMaxZoomScale;
private float mMinZoomScale;
private boolean mMinZoomScaleFixed = true;
// initial scale in percent. 0 means using default.
private int mInitialScaleInPercent = 0;
// while in the zoom overview mode, the page's width is fully fit to the
// current window. The page is alive, in another words, you can click to
// follow the links. Double tap will toggle between zoom overview mode and
// the last zoom scale.
boolean mInZoomOverview = false;
// ideally mZoomOverviewWidth should be mContentWidth. But sites like espn,
// engadget always have wider mContentWidth no matter what viewport size is.
int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH;
float mTextWrapScale;
// default scale. Depending on the display density.
static int DEFAULT_SCALE_PERCENT;
private float mDefaultScale;
private static float MINIMUM_SCALE_INCREMENT = 0.01f;
// set to true temporarily during ScaleGesture triggered zoom
private boolean mPreviewZoomOnly = false;
// computed scale and inverse, from mZoomWidth.
private float mActualScale;
private float mInvActualScale;
// if this is non-zero, it is used on drawing rather than mActualScale
private float mZoomScale;
private float mInvInitialZoomScale;
private float mInvFinalZoomScale;
private int mInitialScrollX;
private int mInitialScrollY;
private long mZoomStart;
private static final int ZOOM_ANIMATION_LENGTH = 500;
private boolean mUserScroll = false;
private int mSnapScrollMode = SNAP_NONE;
private static final int SNAP_NONE = 0;
private static final int SNAP_LOCK = 1; // not a separate state
private static final int SNAP_X = 2; // may be combined with SNAP_LOCK
private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK
private boolean mSnapPositive;
// keep these in sync with their counterparts in WebView.cpp
private static final int DRAW_EXTRAS_NONE = 0;
private static final int DRAW_EXTRAS_FIND = 1;
private static final int DRAW_EXTRAS_SELECTION = 2;
private static final int DRAW_EXTRAS_CURSOR_RING = 3;
// keep this in sync with WebCore:ScrollbarMode in WebKit
private static final int SCROLLBAR_AUTO = 0;
private static final int SCROLLBAR_ALWAYSOFF = 1;
// as we auto fade scrollbar, this is ignored.
private static final int SCROLLBAR_ALWAYSON = 2;
private int mHorizontalScrollBarMode = SCROLLBAR_AUTO;
private int mVerticalScrollBarMode = SCROLLBAR_AUTO;
// Used to match key downs and key ups
private boolean mGotKeyDown;
/* package */ static boolean mLogEvent = true;
// for event log
private long mLastTouchUpTime = 0;
/**
* URI scheme for telephone number
*/
public static final String SCHEME_TEL = "tel:";
/**
* URI scheme for email address
*/
public static final String SCHEME_MAILTO = "mailto:";
/**
* URI scheme for map address
*/
public static final String SCHEME_GEO = "geo:0,0?q=";
private int mBackgroundColor = Color.WHITE;
// Used to notify listeners of a new picture.
private PictureListener mPictureListener;
/**
* Interface to listen for new pictures as they change.
*/
public interface PictureListener {
/**
* Notify the listener that the picture has changed.
* @param view The WebView that owns the picture.
* @param picture The new picture.
*/
public void onNewPicture(WebView view, Picture picture);
}
// FIXME: Want to make this public, but need to change the API file.
public /*static*/ class HitTestResult {
/**
* Default HitTestResult, where the target is unknown
*/
public static final int UNKNOWN_TYPE = 0;
/**
* HitTestResult for hitting a HTML::a tag
*/
public static final int ANCHOR_TYPE = 1;
/**
* HitTestResult for hitting a phone number
*/
public static final int PHONE_TYPE = 2;
/**
* HitTestResult for hitting a map address
*/
public static final int GEO_TYPE = 3;
/**
* HitTestResult for hitting an email address
*/
public static final int EMAIL_TYPE = 4;
/**
* HitTestResult for hitting an HTML::img tag
*/
public static final int IMAGE_TYPE = 5;
/**
* HitTestResult for hitting a HTML::a tag which contains HTML::img
*/
public static final int IMAGE_ANCHOR_TYPE = 6;
/**
* HitTestResult for hitting a HTML::a tag with src=http
*/
public static final int SRC_ANCHOR_TYPE = 7;
/**
* HitTestResult for hitting a HTML::a tag with src=http + HTML::img
*/
public static final int SRC_IMAGE_ANCHOR_TYPE = 8;
/**
* HitTestResult for hitting an edit text area
*/
public static final int EDIT_TEXT_TYPE = 9;
private int mType;
private String mExtra;
HitTestResult() {
mType = UNKNOWN_TYPE;
}
private void setType(int type) {
mType = type;
}
private void setExtra(String extra) {
mExtra = extra;
}
public int getType() {
return mType;
}
public String getExtra() {
return mExtra;
}
}
// The View containing the zoom controls
private ExtendedZoomControls mZoomControls;
private Runnable mZoomControlRunnable;
// mZoomButtonsController will be lazy initialized in
// getZoomButtonsController() to get better performance.
private ZoomButtonsController mZoomButtonsController;
// These keep track of the center point of the zoom. They are used to
// determine the point around which we should zoom.
private float mZoomCenterX;
private float mZoomCenterY;
private ZoomButtonsController.OnZoomListener mZoomListener =
new ZoomButtonsController.OnZoomListener() {
public void onVisibilityChanged(boolean visible) {
if (visible) {
switchOutDrawHistory();
// Bring back the hidden zoom controls.
mZoomButtonsController.getZoomControls().setVisibility(
View.VISIBLE);
updateZoomButtonsEnabled();
}
}
public void onZoom(boolean zoomIn) {
if (zoomIn) {
zoomIn();
} else {
zoomOut();
}
updateZoomButtonsEnabled();
}
};
/**
* Construct a new WebView with a Context object.
* @param context A Context object used to access application assets.
*/
public WebView(Context context) {
this(context, null);
}
/**
* Construct a new WebView with layout parameters.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
*/
public WebView(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.webViewStyle);
}
/**
* Construct a new WebView with layout parameters and a default style.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
* @param defStyle The default style resource ID.
*/
public WebView(Context context, AttributeSet attrs, int defStyle) {
this(context, attrs, defStyle, null);
}
/**
* Construct a new WebView with layout parameters, a default style and a set
* of custom Javscript interfaces to be added to the WebView at initialization
* time. This guarantees that these interfaces will be available when the JS
* context is initialized.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
* @param defStyle The default style resource ID.
* @param javascriptInterfaces is a Map of intareface names, as keys, and
* object implementing those interfaces, as values.
* @hide pending API council approval.
*/
protected WebView(Context context, AttributeSet attrs, int defStyle,
Map<String, Object> javascriptInterfaces) {
super(context, attrs, defStyle);
init();
mCallbackProxy = new CallbackProxy(context, this);
mViewManager = new ViewManager(this);
mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces);
mDatabase = WebViewDatabase.getInstance(context);
mScroller = new Scroller(context);
updateMultiTouchSupport(context);
}
void updateMultiTouchSupport(Context context) {
WebSettings settings = getSettings();
mSupportMultiTouch = context.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH)
&& settings.supportZoom() && settings.getBuiltInZoomControls();
if (mSupportMultiTouch && (mScaleDetector == null)) {
mScaleDetector = new ScaleGestureDetector(context,
new ScaleDetectorListener());
} else if (!mSupportMultiTouch && (mScaleDetector != null)) {
mScaleDetector = null;
}
}
private void updateZoomButtonsEnabled() {
if (mZoomButtonsController == null) return;
boolean canZoomIn = mActualScale < mMaxZoomScale;
boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview;
if (!canZoomIn && !canZoomOut) {
// Hide the zoom in and out buttons, as well as the fit to page
// button, if the page cannot zoom
mZoomButtonsController.getZoomControls().setVisibility(View.GONE);
} else {
// Set each one individually, as a page may be able to zoom in
// or out.
mZoomButtonsController.setZoomInEnabled(canZoomIn);
mZoomButtonsController.setZoomOutEnabled(canZoomOut);
}
}
private void init() {
setWillNotDraw(false);
setFocusable(true);
setFocusableInTouchMode(true);
setClickable(true);
setLongClickable(true);
final ViewConfiguration configuration = ViewConfiguration.get(getContext());
int slop = configuration.getScaledTouchSlop();
mTouchSlopSquare = slop * slop;
mMinLockSnapReverseDistance = slop;
slop = configuration.getScaledDoubleTapSlop();
mDoubleTapSlopSquare = slop * slop;
final float density = getContext().getResources().getDisplayMetrics().density;
// use one line height, 16 based on our current default font, for how
// far we allow a touch be away from the edge of a link
mNavSlop = (int) (16 * density);
// density adjusted scale factors
DEFAULT_SCALE_PERCENT = (int) (100 * density);
mDefaultScale = density;
mActualScale = density;
mInvActualScale = 1 / density;
mTextWrapScale = density;
DEFAULT_MAX_ZOOM_SCALE = 4.0f * density;
DEFAULT_MIN_ZOOM_SCALE = 0.25f * density;
mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE;
mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE;
mMaximumFling = configuration.getScaledMaximumFlingVelocity();
}
/* package */void updateDefaultZoomDensity(int zoomDensity) {
final float density = getContext().getResources().getDisplayMetrics().density
* 100 / zoomDensity;
if (Math.abs(density - mDefaultScale) > 0.01) {
float scaleFactor = density / mDefaultScale;
// adjust the limits
mNavSlop = (int) (16 * density);
DEFAULT_SCALE_PERCENT = (int) (100 * density);
DEFAULT_MAX_ZOOM_SCALE = 4.0f * density;
DEFAULT_MIN_ZOOM_SCALE = 0.25f * density;
mDefaultScale = density;
mMaxZoomScale *= scaleFactor;
mMinZoomScale *= scaleFactor;
setNewZoomScale(mActualScale * scaleFactor, true, false);
}
}
/* package */ boolean onSavePassword(String schemePlusHost, String username,
String password, final Message resumeMsg) {
boolean rVal = false;
if (resumeMsg == null) {
// null resumeMsg implies saving password silently
mDatabase.setUsernamePassword(schemePlusHost, username, password);
} else {
final Message remember = mPrivateHandler.obtainMessage(
REMEMBER_PASSWORD);
remember.getData().putString("host", schemePlusHost);
remember.getData().putString("username", username);
remember.getData().putString("password", password);
remember.obj = resumeMsg;
final Message neverRemember = mPrivateHandler.obtainMessage(
NEVER_REMEMBER_PASSWORD);
neverRemember.getData().putString("host", schemePlusHost);
neverRemember.getData().putString("username", username);
neverRemember.getData().putString("password", password);
neverRemember.obj = resumeMsg;
new AlertDialog.Builder(getContext())
.setTitle(com.android.internal.R.string.save_password_label)
.setMessage(com.android.internal.R.string.save_password_message)
.setPositiveButton(com.android.internal.R.string.save_password_notnow,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
resumeMsg.sendToTarget();
}
})
.setNeutralButton(com.android.internal.R.string.save_password_remember,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
remember.sendToTarget();
}
})
.setNegativeButton(com.android.internal.R.string.save_password_never,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
neverRemember.sendToTarget();
}
})
.setOnCancelListener(new OnCancelListener() {
public void onCancel(DialogInterface dialog) {
resumeMsg.sendToTarget();
}
}).show();
// Return true so that WebViewCore will pause while the dialog is
// up.
rVal = true;
}
return rVal;
}
@Override
public void setScrollBarStyle(int style) {
if (style == View.SCROLLBARS_INSIDE_INSET
|| style == View.SCROLLBARS_OUTSIDE_INSET) {
mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false;
} else {
mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true;
}
super.setScrollBarStyle(style);
}
/**
* Specify whether the horizontal scrollbar has overlay style.
* @param overlay TRUE if horizontal scrollbar should have overlay style.
*/
public void setHorizontalScrollbarOverlay(boolean overlay) {
mOverlayHorizontalScrollbar = overlay;
}
/**
* Specify whether the vertical scrollbar has overlay style.
* @param overlay TRUE if vertical scrollbar should have overlay style.
*/
public void setVerticalScrollbarOverlay(boolean overlay) {
mOverlayVerticalScrollbar = overlay;
}
/**
* Return whether horizontal scrollbar has overlay style
* @return TRUE if horizontal scrollbar has overlay style.
*/
public boolean overlayHorizontalScrollbar() {
return mOverlayHorizontalScrollbar;
}
/**
* Return whether vertical scrollbar has overlay style
* @return TRUE if vertical scrollbar has overlay style.
*/
public boolean overlayVerticalScrollbar() {
return mOverlayVerticalScrollbar;
}
/*
* Return the width of the view where the content of WebView should render
* to.
* Note: this can be called from WebCoreThread.
*/
/* package */ int getViewWidth() {
if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) {
return getWidth();
} else {
return getWidth() - getVerticalScrollbarWidth();
}
}
/*
* returns the height of the titlebarview (if any). Does not care about
* scrolling
*/
private int getTitleHeight() {
return mTitleBar != null ? mTitleBar.getHeight() : 0;
}
/*
* Return the amount of the titlebarview (if any) that is visible
*/
private int getVisibleTitleHeight() {
return Math.max(getTitleHeight() - mScrollY, 0);
}
/*
* Return the height of the view where the content of WebView should render
* to. Note that this excludes mTitleBar, if there is one.
* Note: this can be called from WebCoreThread.
*/
/* package */ int getViewHeight() {
return getViewHeightWithTitle() - getVisibleTitleHeight();
}
private int getViewHeightWithTitle() {
int height = getHeight();
if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) {
height -= getHorizontalScrollbarHeight();
}
return height;
}
/**
* @return The SSL certificate for the main top-level page or null if
* there is no certificate (the site is not secure).
*/
public SslCertificate getCertificate() {
return mCertificate;
}
/**
* Sets the SSL certificate for the main top-level page.
*/
public void setCertificate(SslCertificate certificate) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "setCertificate=" + certificate);
}
// here, the certificate can be null (if the site is not secure)
mCertificate = certificate;
}
//-------------------------------------------------------------------------
// Methods called by activity
//-------------------------------------------------------------------------
/**
* Save the username and password for a particular host in the WebView's
* internal database.
* @param host The host that required the credentials.
* @param username The username for the given host.
* @param password The password for the given host.
*/
public void savePassword(String host, String username, String password) {
mDatabase.setUsernamePassword(host, username, password);
}
/**
* Set the HTTP authentication credentials for a given host and realm.
*
* @param host The host for the credentials.
* @param realm The realm for the credentials.
* @param username The username for the password. If it is null, it means
* password can't be saved.
* @param password The password
*/
public void setHttpAuthUsernamePassword(String host, String realm,
String username, String password) {
mDatabase.setHttpAuthUsernamePassword(host, realm, username, password);
}
/**
* Retrieve the HTTP authentication username and password for a given
* host & realm pair
*
* @param host The host for which the credentials apply.
* @param realm The realm for which the credentials apply.
* @return String[] if found, String[0] is username, which can be null and
* String[1] is password. Return null if it can't find anything.
*/
public String[] getHttpAuthUsernamePassword(String host, String realm) {
return mDatabase.getHttpAuthUsernamePassword(host, realm);
}
/**
* Destroy the internal state of the WebView. This method should be called
* after the WebView has been removed from the view system. No other
* methods may be called on a WebView after destroy.
*/
public void destroy() {
clearTextEntry(false);
if (mWebViewCore != null) {
// Set the handlers to null before destroying WebViewCore so no
// more messages will be posted.
mCallbackProxy.setWebViewClient(null);
mCallbackProxy.setWebChromeClient(null);
// Tell WebViewCore to destroy itself
synchronized (this) {
WebViewCore webViewCore = mWebViewCore;
mWebViewCore = null; // prevent using partial webViewCore
webViewCore.destroy();
}
// Remove any pending messages that might not be serviced yet.
mPrivateHandler.removeCallbacksAndMessages(null);
mCallbackProxy.removeCallbacksAndMessages(null);
// Wake up the WebCore thread just in case it is waiting for a
// javascript dialog.
synchronized (mCallbackProxy) {
mCallbackProxy.notify();
}
}
if (mNativeClass != 0) {
nativeDestroy();
mNativeClass = 0;
}
}
/**
* Enables platform notifications of data state and proxy changes.
*/
public static void enablePlatformNotifications() {
Network.enablePlatformNotifications();
}
/**
* If platform notifications are enabled, this should be called
* from the Activity's onPause() or onStop().
*/
public static void disablePlatformNotifications() {
Network.disablePlatformNotifications();
}
/**
* Sets JavaScript engine flags.
*
* @param flags JS engine flags in a String
*
* @hide pending API solidification
*/
public void setJsFlags(String flags) {
mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags);
}
/**
* Inform WebView of the network state. This is used to set
* the javascript property window.navigator.isOnline and
* generates the online/offline event as specified in HTML5, sec. 5.7.7
* @param networkUp boolean indicating if network is available
*/
public void setNetworkAvailable(boolean networkUp) {
mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE,
networkUp ? 1 : 0, 0);
}
/**
* Inform WebView about the current network type.
* {@hide}
*/
public void setNetworkType(String type, String subtype) {
Map<String, String> map = new HashMap<String, String>();
map.put("type", type);
map.put("subtype", subtype);
mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map);
}
/**
* Save the state of this WebView used in
* {@link android.app.Activity#onSaveInstanceState}. Please note that this
* method no longer stores the display data for this WebView. The previous
* behavior could potentially leak files if {@link #restoreState} was never
* called. See {@link #savePicture} and {@link #restorePicture} for saving
* and restoring the display data.
* @param outState The Bundle to store the WebView state.
* @return The same copy of the back/forward list used to save the state. If
* saveState fails, the returned list will be null.
* @see #savePicture
* @see #restorePicture
*/
public WebBackForwardList saveState(Bundle outState) {
if (outState == null) {
return null;
}
// We grab a copy of the back/forward list because a client of WebView
// may have invalidated the history list by calling clearHistory.
WebBackForwardList list = copyBackForwardList();
final int currentIndex = list.getCurrentIndex();
final int size = list.getSize();
// We should fail saving the state if the list is empty or the index is
// not in a valid range.
if (currentIndex < 0 || currentIndex >= size || size == 0) {
return null;
}
outState.putInt("index", currentIndex);
// FIXME: This should just be a byte[][] instead of ArrayList but
// Parcel.java does not have the code to handle multi-dimensional
// arrays.
ArrayList<byte[]> history = new ArrayList<byte[]>(size);
for (int i = 0; i < size; i++) {
WebHistoryItem item = list.getItemAtIndex(i);
if (null == item) {
// FIXME: this shouldn't happen
// need to determine how item got set to null
Log.w(LOGTAG, "saveState: Unexpected null history item.");
return null;
}
byte[] data = item.getFlattenedData();
if (data == null) {
// It would be very odd to not have any data for a given history
// item. And we will fail to rebuild the history list without
// flattened data.
return null;
}
history.add(data);
}
outState.putSerializable("history", history);
if (mCertificate != null) {
outState.putBundle("certificate",
SslCertificate.saveState(mCertificate));
}
return list;
}
/**
* Save the current display data to the Bundle given. Used in conjunction
* with {@link #saveState}.
* @param b A Bundle to store the display data.
* @param dest The file to store the serialized picture data. Will be
* overwritten with this WebView's picture data.
* @return True if the picture was successfully saved.
*/
public boolean savePicture(Bundle b, final File dest) {
if (dest == null || b == null) {
return false;
}
final Picture p = capturePicture();
// Use a temporary file while writing to ensure the destination file
// contains valid data.
final File temp = new File(dest.getPath() + ".writing");
new Thread(new Runnable() {
public void run() {
try {
FileOutputStream out = new FileOutputStream(temp);
p.writeToStream(out);
out.close();
// Writing the picture succeeded, rename the temporary file
// to the destination.
temp.renameTo(dest);
} catch (Exception e) {
// too late to do anything about it.
} finally {
temp.delete();
}
}
}).start();
// now update the bundle
b.putInt("scrollX", mScrollX);
b.putInt("scrollY", mScrollY);
b.putFloat("scale", mActualScale);
b.putFloat("textwrapScale", mTextWrapScale);
b.putBoolean("overview", mInZoomOverview);
return true;
}
private void restoreHistoryPictureFields(Picture p, Bundle b) {
int sx = b.getInt("scrollX", 0);
int sy = b.getInt("scrollY", 0);
float scale = b.getFloat("scale", 1.0f);
mDrawHistory = true;
mHistoryPicture = p;
mScrollX = sx;
mScrollY = sy;
mHistoryWidth = Math.round(p.getWidth() * scale);
mHistoryHeight = Math.round(p.getHeight() * scale);
// as getWidth() / getHeight() of the view are not available yet, set up
// mActualScale, so that when onSizeChanged() is called, the rest will
// be set correctly
mActualScale = scale;
mInvActualScale = 1 / scale;
mTextWrapScale = b.getFloat("textwrapScale", scale);
mInZoomOverview = b.getBoolean("overview");
invalidate();
}
/**
* Restore the display data that was save in {@link #savePicture}. Used in
* conjunction with {@link #restoreState}.
* @param b A Bundle containing the saved display data.
* @param src The file where the picture data was stored.
* @return True if the picture was successfully restored.
*/
public boolean restorePicture(Bundle b, File src) {
if (src == null || b == null) {
return false;
}
if (!src.exists()) {
return false;
}
try {
final FileInputStream in = new FileInputStream(src);
final Bundle copy = new Bundle(b);
new Thread(new Runnable() {
public void run() {
final Picture p = Picture.createFromStream(in);
if (p != null) {
// Post a runnable on the main thread to update the
// history picture fields.
mPrivateHandler.post(new Runnable() {
public void run() {
restoreHistoryPictureFields(p, copy);
}
});
}
try {
in.close();
} catch (Exception e) {
// Nothing we can do now.
}
}
}).start();
} catch (FileNotFoundException e){
e.printStackTrace();
}
return true;
}
/**
* Restore the state of this WebView from the given map used in
* {@link android.app.Activity#onRestoreInstanceState}. This method should
* be called to restore the state of the WebView before using the object. If
* it is called after the WebView has had a chance to build state (load
* pages, create a back/forward list, etc.) there may be undesirable
* side-effects. Please note that this method no longer restores the
* display data for this WebView. See {@link #savePicture} and {@link
* #restorePicture} for saving and restoring the display data.
* @param inState The incoming Bundle of state.
* @return The restored back/forward list or null if restoreState failed.
* @see #savePicture
* @see #restorePicture
*/
public WebBackForwardList restoreState(Bundle inState) {
WebBackForwardList returnList = null;
if (inState == null) {
return returnList;
}
if (inState.containsKey("index") && inState.containsKey("history")) {
mCertificate = SslCertificate.restoreState(
inState.getBundle("certificate"));
final WebBackForwardList list = mCallbackProxy.getBackForwardList();
final int index = inState.getInt("index");
// We can't use a clone of the list because we need to modify the
// shared copy, so synchronize instead to prevent concurrent
// modifications.
synchronized (list) {
final List<byte[]> history =
(List<byte[]>) inState.getSerializable("history");
final int size = history.size();
// Check the index bounds so we don't crash in native code while
// restoring the history index.
if (index < 0 || index >= size) {
return null;
}
for (int i = 0; i < size; i++) {
byte[] data = history.remove(0);
if (data == null) {
// If we somehow have null data, we cannot reconstruct
// the item and thus our history list cannot be rebuilt.
return null;
}
WebHistoryItem item = new WebHistoryItem(data);
list.addHistoryItem(item);
}
// Grab the most recent copy to return to the caller.
returnList = copyBackForwardList();
// Update the copy to have the correct index.
returnList.setCurrentIndex(index);
}
// Remove all pending messages because we are restoring previous
// state.
mWebViewCore.removeMessages();
// Send a restore state message.
mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index);
}
return returnList;
}
/**
* Load the given url with the extra headers.
* @param url The url of the resource to load.
* @param extraHeaders The extra headers sent with this url. This should not
* include the common headers like "user-agent". If it does, it
* will be replaced by the intrinsic value of the WebView.
*/
public void loadUrl(String url, Map<String, String> extraHeaders) {
switchOutDrawHistory();
WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData();
arg.mUrl = url;
arg.mExtraHeaders = extraHeaders;
mWebViewCore.sendMessage(EventHub.LOAD_URL, arg);
clearTextEntry(false);
}
/**
* Load the given url.
* @param url The url of the resource to load.
*/
public void loadUrl(String url) {
if (url == null) {
return;
}
loadUrl(url, null);
}
/**
* Load the url with postData using "POST" method into the WebView. If url
* is not a network url, it will be loaded with {link
* {@link #loadUrl(String)} instead.
*
* @param url The url of the resource to load.
* @param postData The data will be passed to "POST" request.
*/
public void postUrl(String url, byte[] postData) {
if (URLUtil.isNetworkUrl(url)) {
switchOutDrawHistory();
WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData();
arg.mUrl = url;
arg.mPostData = postData;
mWebViewCore.sendMessage(EventHub.POST_URL, arg);
clearTextEntry(false);
} else {
loadUrl(url);
}
}
/**
* Load the given data into the WebView. This will load the data into
* WebView using the data: scheme. Content loaded through this mechanism
* does not have the ability to load content from the network.
* @param data A String of data in the given encoding. The date must
* be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25,
* %27, %3f respectively.
* @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg
* @param encoding The encoding of the data. i.e. utf-8, base64
*/
public void loadData(String data, String mimeType, String encoding) {
loadUrl("data:" + mimeType + ";" + encoding + "," + data);
}
/**
* Load the given data into the WebView, use the provided URL as the base
* URL for the content. The base URL is the URL that represents the page
* that is loaded through this interface. As such, it is used to resolve any
* relative URLs. The historyUrl is used for the history entry.
* <p>
* Note for post 1.0. Due to the change in the WebKit, the access to asset
* files through "file:///android_asset/" for the sub resources is more
* restricted. If you provide null or empty string as baseUrl, you won't be
* able to access asset files. If the baseUrl is anything other than
* http(s)/ftp(s)/about/javascript as scheme, you can access asset files for
* sub resources.
*
* @param baseUrl Url to resolve relative paths with, if null defaults to
* "about:blank"
* @param data A String of data in the given encoding.
* @param mimeType The MIMEType of the data. i.e. text/html. If null,
* defaults to "text/html"
* @param encoding The encoding of the data. i.e. utf-8, us-ascii
* @param historyUrl URL to use as the history entry. Can be null.
*/
public void loadDataWithBaseURL(String baseUrl, String data,
String mimeType, String encoding, String historyUrl) {
if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) {
loadData(data, mimeType, encoding);
return;
}
switchOutDrawHistory();
WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData();
arg.mBaseUrl = baseUrl;
arg.mData = data;
arg.mMimeType = mimeType;
arg.mEncoding = encoding;
arg.mHistoryUrl = historyUrl;
mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg);
clearTextEntry(false);
}
/**
* Stop the current load.
*/
public void stopLoading() {
// TODO: should we clear all the messages in the queue before sending
// STOP_LOADING?
switchOutDrawHistory();
mWebViewCore.sendMessage(EventHub.STOP_LOADING);
}
/**
* Reload the current url.
*/
public void reload() {
clearTextEntry(false);
switchOutDrawHistory();
mWebViewCore.sendMessage(EventHub.RELOAD);
}
/**
* Return true if this WebView has a back history item.
* @return True iff this WebView has a back history item.
*/
public boolean canGoBack() {
WebBackForwardList l = mCallbackProxy.getBackForwardList();
synchronized (l) {
if (l.getClearPending()) {
return false;
} else {
return l.getCurrentIndex() > 0;
}
}
}
/**
* Go back in the history of this WebView.
*/
public void goBack() {
goBackOrForward(-1);
}
/**
* Return true if this WebView has a forward history item.
* @return True iff this Webview has a forward history item.
*/
public boolean canGoForward() {
WebBackForwardList l = mCallbackProxy.getBackForwardList();
synchronized (l) {
if (l.getClearPending()) {
return false;
} else {
return l.getCurrentIndex() < l.getSize() - 1;
}
}
}
/**
* Go forward in the history of this WebView.
*/
public void goForward() {
goBackOrForward(1);
}
/**
* Return true if the page can go back or forward the given
* number of steps.
* @param steps The negative or positive number of steps to move the
* history.
*/
public boolean canGoBackOrForward(int steps) {
WebBackForwardList l = mCallbackProxy.getBackForwardList();
synchronized (l) {
if (l.getClearPending()) {
return false;
} else {
int newIndex = l.getCurrentIndex() + steps;
return newIndex >= 0 && newIndex < l.getSize();
}
}
}
/**
* Go to the history item that is the number of steps away from
* the current item. Steps is negative if backward and positive
* if forward.
* @param steps The number of steps to take back or forward in the back
* forward list.
*/
public void goBackOrForward(int steps) {
goBackOrForward(steps, false);
}
private void goBackOrForward(int steps, boolean ignoreSnapshot) {
if (steps != 0) {
clearTextEntry(false);
mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps,
ignoreSnapshot ? 1 : 0);
}
}
private boolean extendScroll(int y) {
int finalY = mScroller.getFinalY();
int newY = pinLocY(finalY + y);
if (newY == finalY) return false;
mScroller.setFinalY(newY);
mScroller.extendDuration(computeDuration(0, y));
return true;
}
/**
* Scroll the contents of the view up by half the view size
* @param top true to jump to the top of the page
* @return true if the page was scrolled
*/
public boolean pageUp(boolean top) {
if (mNativeClass == 0) {
return false;
}
nativeClearCursor(); // start next trackball movement from page edge
if (top) {
// go to the top of the document
return pinScrollTo(mScrollX, 0, true, 0);
}
// Page up
int h = getHeight();
int y;
if (h > 2 * PAGE_SCROLL_OVERLAP) {
y = -h + PAGE_SCROLL_OVERLAP;
} else {
y = -h / 2;
}
mUserScroll = true;
return mScroller.isFinished() ? pinScrollBy(0, y, true, 0)
: extendScroll(y);
}
/**
* Scroll the contents of the view down by half the page size
* @param bottom true to jump to bottom of page
* @return true if the page was scrolled
*/
public boolean pageDown(boolean bottom) {
if (mNativeClass == 0) {
return false;
}
nativeClearCursor(); // start next trackball movement from page edge
if (bottom) {
return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0);
}
// Page down.
int h = getHeight();
int y;
if (h > 2 * PAGE_SCROLL_OVERLAP) {
y = h - PAGE_SCROLL_OVERLAP;
} else {
y = h / 2;
}
mUserScroll = true;
return mScroller.isFinished() ? pinScrollBy(0, y, true, 0)
: extendScroll(y);
}
/**
* Clear the view so that onDraw() will draw nothing but white background,
* and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY
*/
public void clearView() {
mContentWidth = 0;
mContentHeight = 0;
mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT);
}
/**
* Return a new picture that captures the current display of the webview.
* This is a copy of the display, and will be unaffected if the webview
* later loads a different URL.
*
* @return a picture containing the current contents of the view. Note this
* picture is of the entire document, and is not restricted to the
* bounds of the view.
*/
public Picture capturePicture() {
if (null == mWebViewCore) return null; // check for out of memory tab
return mWebViewCore.copyContentPicture();
}
/**
* Return true if the browser is displaying a TextView for text input.
*/
private boolean inEditingMode() {
return mWebTextView != null && mWebTextView.getParent() != null;
}
/**
* Remove the WebTextView.
* @param disableFocusController If true, send a message to webkit
* disabling the focus controller, so the caret stops blinking.
*/
private void clearTextEntry(boolean disableFocusController) {
if (inEditingMode()) {
mWebTextView.remove();
if (disableFocusController) {
setFocusControllerInactive();
}
}
}
/**
* Return the current scale of the WebView
* @return The current scale.
*/
public float getScale() {
return mActualScale;
}
/**
* Set the initial scale for the WebView. 0 means default. If
* {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the
* way. Otherwise it starts with 100%. If initial scale is greater than 0,
* WebView starts will this value as initial scale.
*
* @param scaleInPercent The initial scale in percent.
*/
public void setInitialScale(int scaleInPercent) {
mInitialScaleInPercent = scaleInPercent;
}
/**
* Invoke the graphical zoom picker widget for this WebView. This will
* result in the zoom widget appearing on the screen to control the zoom
* level of this WebView.
*/
public void invokeZoomPicker() {
if (!getSettings().supportZoom()) {
Log.w(LOGTAG, "This WebView doesn't support zoom.");
return;
}
clearTextEntry(false);
if (getSettings().getBuiltInZoomControls()) {
getZoomButtonsController().setVisible(true);
} else {
mPrivateHandler.removeCallbacks(mZoomControlRunnable);
mPrivateHandler.postDelayed(mZoomControlRunnable,
ZOOM_CONTROLS_TIMEOUT);
}
}
/**
* Return a HitTestResult based on the current cursor node. If a HTML::a tag
* is found and the anchor has a non-javascript url, the HitTestResult type
* is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the
* anchor does not have a url or if it is a javascript url, the type will
* be UNKNOWN_TYPE and the url has to be retrieved through
* {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is
* found, the HitTestResult type is set to IMAGE_TYPE and the url is set in
* the "extra" field. A type of
* SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as
* a child node. If a phone number is found, the HitTestResult type is set
* to PHONE_TYPE and the phone number is set in the "extra" field of
* HitTestResult. If a map address is found, the HitTestResult type is set
* to GEO_TYPE and the address is set in the "extra" field of HitTestResult.
* If an email address is found, the HitTestResult type is set to EMAIL_TYPE
* and the email is set in the "extra" field of HitTestResult. Otherwise,
* HitTestResult type is set to UNKNOWN_TYPE.
*/
public HitTestResult getHitTestResult() {
if (mNativeClass == 0) {
return null;
}
HitTestResult result = new HitTestResult();
if (nativeHasCursorNode()) {
if (nativeCursorIsTextInput()) {
result.setType(HitTestResult.EDIT_TEXT_TYPE);
} else {
String text = nativeCursorText();
if (text != null) {
if (text.startsWith(SCHEME_TEL)) {
result.setType(HitTestResult.PHONE_TYPE);
result.setExtra(text.substring(SCHEME_TEL.length()));
} else if (text.startsWith(SCHEME_MAILTO)) {
result.setType(HitTestResult.EMAIL_TYPE);
result.setExtra(text.substring(SCHEME_MAILTO.length()));
} else if (text.startsWith(SCHEME_GEO)) {
result.setType(HitTestResult.GEO_TYPE);
result.setExtra(URLDecoder.decode(text
.substring(SCHEME_GEO.length())));
} else if (nativeCursorIsAnchor()) {
result.setType(HitTestResult.SRC_ANCHOR_TYPE);
result.setExtra(text);
}
}
}
}
int type = result.getType();
if (type == HitTestResult.UNKNOWN_TYPE
|| type == HitTestResult.SRC_ANCHOR_TYPE) {
// Now check to see if it is an image.
int contentX = viewToContentX((int) mLastTouchX + mScrollX);
int contentY = viewToContentY((int) mLastTouchY + mScrollY);
String text = nativeImageURI(contentX, contentY);
if (text != null) {
result.setType(type == HitTestResult.UNKNOWN_TYPE ?
HitTestResult.IMAGE_TYPE :
HitTestResult.SRC_IMAGE_ANCHOR_TYPE);
result.setExtra(text);
}
}
return result;
}
// Called by JNI when the DOM has changed the focus. Clear the focus so
// that new keys will go to the newly focused field
private void domChangedFocus() {
if (inEditingMode()) {
mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget();
}
}
/**
* Request the href of an anchor element due to getFocusNodePath returning
* "href." If hrefMsg is null, this method returns immediately and does not
* dispatch hrefMsg to its target.
*
* @param hrefMsg This message will be dispatched with the result of the
* request as the data member with "url" as key. The result can
* be null.
*/
// FIXME: API change required to change the name of this function. We now
// look at the cursor node, and not the focus node. Also, what is
// getFocusNodePath?
public void requestFocusNodeHref(Message hrefMsg) {
if (hrefMsg == null || mNativeClass == 0) {
return;
}
if (nativeCursorIsAnchor()) {
mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF,
nativeCursorFramePointer(), nativeCursorNodePointer(),
hrefMsg);
}
}
/**
* Request the url of the image last touched by the user. msg will be sent
* to its target with a String representing the url as its object.
*
* @param msg This message will be dispatched with the result of the request
* as the data member with "url" as key. The result can be null.
*/
public void requestImageRef(Message msg) {
if (0 == mNativeClass) return; // client isn't initialized
int contentX = viewToContentX((int) mLastTouchX + mScrollX);
int contentY = viewToContentY((int) mLastTouchY + mScrollY);
String ref = nativeImageURI(contentX, contentY);
Bundle data = msg.getData();
data.putString("url", ref);
msg.setData(data);
msg.sendToTarget();
}
private static int pinLoc(int x, int viewMax, int docMax) {
// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax);
if (docMax < viewMax) { // the doc has room on the sides for "blank"
// pin the short document to the top/left of the screen
x = 0;
// Log.d(LOGTAG, "--- center " + x);
} else if (x < 0) {
x = 0;
// Log.d(LOGTAG, "--- zero");
} else if (x + viewMax > docMax) {
x = docMax - viewMax;
// Log.d(LOGTAG, "--- pin " + x);
}
return x;
}
// Expects x in view coordinates
private int pinLocX(int x) {
return pinLoc(x, getViewWidth(), computeHorizontalScrollRange());
}
// Expects y in view coordinates
private int pinLocY(int y) {
return pinLoc(y, getViewHeightWithTitle(),
computeVerticalScrollRange() + getTitleHeight());
}
/**
* A title bar which is embedded in this WebView, and scrolls along with it
* vertically, but not horizontally.
*/
private View mTitleBar;
/**
* Since we draw the title bar ourselves, we removed the shadow from the
* browser's activity. We do want a shadow at the bottom of the title bar,
* or at the top of the screen if the title bar is not visible. This
* drawable serves that purpose.
*/
private Drawable mTitleShadow;
/**
* Add or remove a title bar to be embedded into the WebView, and scroll
* along with it vertically, while remaining in view horizontally. Pass
* null to remove the title bar from the WebView, and return to drawing
* the WebView normally without translating to account for the title bar.
* @hide
*/
public void setEmbeddedTitleBar(View v) {
if (mTitleBar == v) return;
if (mTitleBar != null) {
removeView(mTitleBar);
}
if (null != v) {
addView(v, new AbsoluteLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0));
if (mTitleShadow == null) {
mTitleShadow = (Drawable) mContext.getResources().getDrawable(
com.android.internal.R.drawable.title_bar_shadow);
}
}
mTitleBar = v;
}
/**
* Given a distance in view space, convert it to content space. Note: this
* does not reflect translation, just scaling, so this should not be called
* with coordinates, but should be called for dimensions like width or
* height.
*/
private int viewToContentDimension(int d) {
return Math.round(d * mInvActualScale);
}
/**
* Given an x coordinate in view space, convert it to content space. Also
* may be used for absolute heights (such as for the WebTextView's
* textSize, which is unaffected by the height of the title bar).
*/
/*package*/ int viewToContentX(int x) {
return viewToContentDimension(x);
}
/**
* Given a y coordinate in view space, convert it to content space.
* Takes into account the height of the title bar if there is one
* embedded into the WebView.
*/
/*package*/ int viewToContentY(int y) {
return viewToContentDimension(y - getTitleHeight());
}
/**
* Given a x coordinate in view space, convert it to content space.
* Returns the result as a float.
*/
private float viewToContentXf(int x) {
return x * mInvActualScale;
}
/**
* Given a y coordinate in view space, convert it to content space.
* Takes into account the height of the title bar if there is one
* embedded into the WebView. Returns the result as a float.
*/
private float viewToContentYf(int y) {
return (y - getTitleHeight()) * mInvActualScale;
}
/**
* Given a distance in content space, convert it to view space. Note: this
* does not reflect translation, just scaling, so this should not be called
* with coordinates, but should be called for dimensions like width or
* height.
*/
/*package*/ int contentToViewDimension(int d) {
return Math.round(d * mActualScale);
}
/**
* Given an x coordinate in content space, convert it to view
* space.
*/
/*package*/ int contentToViewX(int x) {
return contentToViewDimension(x);
}
/**
* Given a y coordinate in content space, convert it to view
* space. Takes into account the height of the title bar.
*/
/*package*/ int contentToViewY(int y) {
return contentToViewDimension(y) + getTitleHeight();
}
private Rect contentToViewRect(Rect x) {
return new Rect(contentToViewX(x.left), contentToViewY(x.top),
contentToViewX(x.right), contentToViewY(x.bottom));
}
/* To invalidate a rectangle in content coordinates, we need to transform
the rect into view coordinates, so we can then call invalidate(...).
Normally, we would just call contentToView[XY](...), which eventually
calls Math.round(coordinate * mActualScale). However, for invalidates,
we need to account for the slop that occurs with antialiasing. To
address that, we are a little more liberal in the size of the rect that
we invalidate.
This liberal calculation calls floor() for the top/left, and ceil() for
the bottom/right coordinates. This catches the possible extra pixels of
antialiasing that we might have missed with just round().
*/
// Called by JNI to invalidate the View, given rectangle coordinates in
// content space
private void viewInvalidate(int l, int t, int r, int b) {
final float scale = mActualScale;
final int dy = getTitleHeight();
invalidate((int)Math.floor(l * scale),
(int)Math.floor(t * scale) + dy,
(int)Math.ceil(r * scale),
(int)Math.ceil(b * scale) + dy);
}
// Called by JNI to invalidate the View after a delay, given rectangle
// coordinates in content space
private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) {
final float scale = mActualScale;
final int dy = getTitleHeight();
postInvalidateDelayed(delay,
(int)Math.floor(l * scale),
(int)Math.floor(t * scale) + dy,
(int)Math.ceil(r * scale),
(int)Math.ceil(b * scale) + dy);
}
private void invalidateContentRect(Rect r) {
viewInvalidate(r.left, r.top, r.right, r.bottom);
}
// stop the scroll animation, and don't let a subsequent fling add
// to the existing velocity
private void abortAnimation() {
mScroller.abortAnimation();
mLastVelocity = 0;
}
/* call from webcoreview.draw(), so we're still executing in the UI thread
*/
private void recordNewContentSize(int w, int h, boolean updateLayout) {
// premature data from webkit, ignore
if ((w | h) == 0) {
return;
}
// don't abort a scroll animation if we didn't change anything
if (mContentWidth != w || mContentHeight != h) {
// record new dimensions
mContentWidth = w;
mContentHeight = h;
// If history Picture is drawn, don't update scroll. They will be
// updated when we get out of that mode.
if (!mDrawHistory) {
// repin our scroll, taking into account the new content size
int oldX = mScrollX;
int oldY = mScrollY;
mScrollX = pinLocX(mScrollX);
mScrollY = pinLocY(mScrollY);
if (oldX != mScrollX || oldY != mScrollY) {
onScrollChanged(mScrollX, mScrollY, oldX, oldY);
}
if (!mScroller.isFinished()) {
// We are in the middle of a scroll. Repin the final scroll
// position.
mScroller.setFinalX(pinLocX(mScroller.getFinalX()));
mScroller.setFinalY(pinLocY(mScroller.getFinalY()));
}
}
}
contentSizeChanged(updateLayout);
}
private void setNewZoomScale(float scale, boolean updateTextWrapScale,
boolean force) {
if (scale < mMinZoomScale) {
scale = mMinZoomScale;
// set mInZoomOverview for non mobile sites
if (scale < mDefaultScale) mInZoomOverview = true;
} else if (scale > mMaxZoomScale) {
scale = mMaxZoomScale;
}
if (updateTextWrapScale) {
mTextWrapScale = scale;
// reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit
mLastHeightSent = 0;
}
if (scale != mActualScale || force) {
if (mDrawHistory) {
// If history Picture is drawn, don't update scroll. They will
// be updated when we get out of that mode.
if (scale != mActualScale && !mPreviewZoomOnly) {
mCallbackProxy.onScaleChanged(mActualScale, scale);
}
mActualScale = scale;
mInvActualScale = 1 / scale;
sendViewSizeZoom();
} else {
// update our scroll so we don't appear to jump
// i.e. keep the center of the doc in the center of the view
int oldX = mScrollX;
int oldY = mScrollY;
float ratio = scale * mInvActualScale; // old inverse
float sx = ratio * oldX + (ratio - 1) * mZoomCenterX;
float sy = ratio * oldY + (ratio - 1)
* (mZoomCenterY - getTitleHeight());
// now update our new scale and inverse
if (scale != mActualScale && !mPreviewZoomOnly) {
mCallbackProxy.onScaleChanged(mActualScale, scale);
}
mActualScale = scale;
mInvActualScale = 1 / scale;
// Scale all the child views
mViewManager.scaleAll();
// as we don't have animation for scaling, don't do animation
// for scrolling, as it causes weird intermediate state
// pinScrollTo(Math.round(sx), Math.round(sy));
mScrollX = pinLocX(Math.round(sx));
mScrollY = pinLocY(Math.round(sy));
// update webkit
if (oldX != mScrollX || oldY != mScrollY) {
onScrollChanged(mScrollX, mScrollY, oldX, oldY);
} else {
// the scroll position is adjusted at the beginning of the
// zoom animation. But we want to update the WebKit at the
// end of the zoom animation. See comments in onScaleEnd().
sendOurVisibleRect();
}
sendViewSizeZoom();
}
}
}
// Used to avoid sending many visible rect messages.
private Rect mLastVisibleRectSent;
private Rect mLastGlobalRect;
private Rect sendOurVisibleRect() {
if (mPreviewZoomOnly) return mLastVisibleRectSent;
Rect rect = new Rect();
calcOurContentVisibleRect(rect);
// Rect.equals() checks for null input.
if (!rect.equals(mLastVisibleRectSent)) {
Point pos = new Point(rect.left, rect.top);
mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET,
nativeMoveGeneration(), 0, pos);
mLastVisibleRectSent = rect;
}
Rect globalRect = new Rect();
if (getGlobalVisibleRect(globalRect)
&& !globalRect.equals(mLastGlobalRect)) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + ","
+ globalRect.top + ",r=" + globalRect.right + ",b="
+ globalRect.bottom);
}
// TODO: the global offset is only used by windowRect()
// in ChromeClientAndroid ; other clients such as touch
// and mouse events could return view + screen relative points.
mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect);
mLastGlobalRect = globalRect;
}
return rect;
}
// Sets r to be the visible rectangle of our webview in view coordinates
private void calcOurVisibleRect(Rect r) {
Point p = new Point();
getGlobalVisibleRect(r, p);
r.offset(-p.x, -p.y);
if (mFindIsUp) {
r.bottom -= mFindHeight;
}
}
// Sets r to be our visible rectangle in content coordinates
private void calcOurContentVisibleRect(Rect r) {
calcOurVisibleRect(r);
// pin the rect to the bounds of the content
r.left = Math.max(viewToContentX(r.left), 0);
// viewToContentY will remove the total height of the title bar. Add
// the visible height back in to account for the fact that if the title
// bar is partially visible, the part of the visible rect which is
// displaying our content is displaced by that amount.
r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0);
r.right = Math.min(viewToContentX(r.right), mContentWidth);
r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight);
}
// Sets r to be our visible rectangle in content coordinates. We use this
// method on the native side to compute the position of the fixed layers.
// Uses floating coordinates (necessary to correctly place elements when
// the scale factor is not 1)
private void calcOurContentVisibleRectF(RectF r) {
Rect ri = new Rect(0,0,0,0);
calcOurVisibleRect(ri);
// pin the rect to the bounds of the content
r.left = Math.max(viewToContentXf(ri.left), 0.0f);
// viewToContentY will remove the total height of the title bar. Add
// the visible height back in to account for the fact that if the title
// bar is partially visible, the part of the visible rect which is
// displaying our content is displaced by that amount.
r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f);
r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth);
r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight);
}
static class ViewSizeData {
int mWidth;
int mHeight;
int mTextWrapWidth;
int mAnchorX;
int mAnchorY;
float mScale;
boolean mIgnoreHeight;
}
/**
* Compute unzoomed width and height, and if they differ from the last
* values we sent, send them to webkit (to be used has new viewport)
*
* @return true if new values were sent
*/
private boolean sendViewSizeZoom() {
if (mPreviewZoomOnly) return false;
int viewWidth = getViewWidth();
int newWidth = Math.round(viewWidth * mInvActualScale);
int newHeight = Math.round(getViewHeight() * mInvActualScale);
/*
* Because the native side may have already done a layout before the
* View system was able to measure us, we have to send a height of 0 to
* remove excess whitespace when we grow our width. This will trigger a
* layout and a change in content size. This content size change will
* mean that contentSizeChanged will either call this method directly or
* indirectly from onSizeChanged.
*/
if (newWidth > mLastWidthSent && mWrapContent) {
newHeight = 0;
}
// Avoid sending another message if the dimensions have not changed.
if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) {
ViewSizeData data = new ViewSizeData();
data.mWidth = newWidth;
data.mHeight = newHeight;
data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);;
data.mScale = mActualScale;
data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure;
data.mAnchorX = mAnchorX;
data.mAnchorY = mAnchorY;
mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data);
mLastWidthSent = newWidth;
mLastHeightSent = newHeight;
mAnchorX = mAnchorY = 0;
return true;
}
return false;
}
@Override
protected int computeHorizontalScrollRange() {
if (mDrawHistory) {
return mHistoryWidth;
} else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF
&& (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) {
// only honor the scrollbar mode when it is at minimum zoom level
return computeHorizontalScrollExtent();
} else {
// to avoid rounding error caused unnecessary scrollbar, use floor
return (int) Math.floor(mContentWidth * mActualScale);
}
}
@Override
protected int computeVerticalScrollRange() {
if (mDrawHistory) {
return mHistoryHeight;
} else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF
&& (mActualScale - mMinZoomScale <= MINIMUM_SCALE_INCREMENT)) {
// only honor the scrollbar mode when it is at minimum zoom level
return computeVerticalScrollExtent();
} else {
// to avoid rounding error caused unnecessary scrollbar, use floor
return (int) Math.floor(mContentHeight * mActualScale);
}
}
@Override
protected int computeVerticalScrollOffset() {
return Math.max(mScrollY - getTitleHeight(), 0);
}
@Override
protected int computeVerticalScrollExtent() {
return getViewHeight();
}
/** @hide */
@Override
protected void onDrawVerticalScrollBar(Canvas canvas,
Drawable scrollBar,
int l, int t, int r, int b) {
scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b);
scrollBar.draw(canvas);
}
/**
* Get the url for the current page. This is not always the same as the url
* passed to WebViewClient.onPageStarted because although the load for
* that url has begun, the current page may not have changed.
* @return The url for the current page.
*/
public String getUrl() {
WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();
return h != null ? h.getUrl() : null;
}
/**
* Get the original url for the current page. This is not always the same
* as the url passed to WebViewClient.onPageStarted because although the
* load for that url has begun, the current page may not have changed.
* Also, there may have been redirects resulting in a different url to that
* originally requested.
* @return The url that was originally requested for the current page.
*/
public String getOriginalUrl() {
WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();
return h != null ? h.getOriginalUrl() : null;
}
/**
* Get the title for the current page. This is the title of the current page
* until WebViewClient.onReceivedTitle is called.
* @return The title for the current page.
*/
public String getTitle() {
WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();
return h != null ? h.getTitle() : null;
}
/**
* Get the favicon for the current page. This is the favicon of the current
* page until WebViewClient.onReceivedIcon is called.
* @return The favicon for the current page.
*/
public Bitmap getFavicon() {
WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();
return h != null ? h.getFavicon() : null;
}
/**
* Get the touch icon url for the apple-touch-icon <link> element.
* @hide
*/
public String getTouchIconUrl() {
WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem();
return h != null ? h.getTouchIconUrl() : null;
}
/**
* Get the progress for the current page.
* @return The progress for the current page between 0 and 100.
*/
public int getProgress() {
return mCallbackProxy.getProgress();
}
/**
* @return the height of the HTML content.
*/
public int getContentHeight() {
return mContentHeight;
}
/**
* @return the width of the HTML content.
* @hide
*/
public int getContentWidth() {
return mContentWidth;
}
/**
* Pause all layout, parsing, and javascript timers for all webviews. This
* is a global requests, not restricted to just this webview. This can be
* useful if the application has been paused.
*/
public void pauseTimers() {
mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS);
}
/**
* Resume all layout, parsing, and javascript timers for all webviews.
* This will resume dispatching all timers.
*/
public void resumeTimers() {
mWebViewCore.sendMessage(EventHub.RESUME_TIMERS);
}
/**
* Call this to pause any extra processing associated with this view and
* its associated DOM/plugins/javascript/etc. For example, if the view is
* taken offscreen, this could be called to reduce unnecessary CPU and/or
* network traffic. When the view is again "active", call onResume().
*
* Note that this differs from pauseTimers(), which affects all views/DOMs
* @hide
*/
public void onPause() {
if (!mIsPaused) {
mIsPaused = true;
mWebViewCore.sendMessage(EventHub.ON_PAUSE);
}
}
/**
* Call this to balanace a previous call to onPause()
* @hide
*/
public void onResume() {
if (mIsPaused) {
mIsPaused = false;
mWebViewCore.sendMessage(EventHub.ON_RESUME);
}
}
/**
* Returns true if the view is paused, meaning onPause() was called. Calling
* onResume() sets the paused state back to false.
* @hide
*/
public boolean isPaused() {
return mIsPaused;
}
/**
* Call this to inform the view that memory is low so that it can
* free any available memory.
*/
public void freeMemory() {
mWebViewCore.sendMessage(EventHub.FREE_MEMORY);
}
/**
* Clear the resource cache. Note that the cache is per-application, so
* this will clear the cache for all WebViews used.
*
* @param includeDiskFiles If false, only the RAM cache is cleared.
*/
public void clearCache(boolean includeDiskFiles) {
// Note: this really needs to be a static method as it clears cache for all
// WebView. But we need mWebViewCore to send message to WebCore thread, so
// we can't make this static.
mWebViewCore.sendMessage(EventHub.CLEAR_CACHE,
includeDiskFiles ? 1 : 0, 0);
}
/**
* Make sure that clearing the form data removes the adapter from the
* currently focused textfield if there is one.
*/
public void clearFormData() {
if (inEditingMode()) {
AutoCompleteAdapter adapter = null;
mWebTextView.setAdapterCustom(adapter);
}
}
/**
* Tell the WebView to clear its internal back/forward list.
*/
public void clearHistory() {
mCallbackProxy.getBackForwardList().setClearPending();
mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY);
}
/**
* Clear the SSL preferences table stored in response to proceeding with SSL
* certificate errors.
*/
public void clearSslPreferences() {
mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE);
}
/**
* Return the WebBackForwardList for this WebView. This contains the
* back/forward list for use in querying each item in the history stack.
* This is a copy of the private WebBackForwardList so it contains only a
* snapshot of the current state. Multiple calls to this method may return
* different objects. The object returned from this method will not be
* updated to reflect any new state.
*/
public WebBackForwardList copyBackForwardList() {
return mCallbackProxy.getBackForwardList().clone();
}
/*
* Highlight and scroll to the next occurance of String in findAll.
* Wraps the page infinitely, and scrolls. Must be called after
* calling findAll.
*
* @param forward Direction to search.
*/
public void findNext(boolean forward) {
if (0 == mNativeClass) return; // client isn't initialized
nativeFindNext(forward);
}
/*
* Find all instances of find on the page and highlight them.
* @param find String to find.
* @return int The number of occurances of the String "find"
* that were found.
*/
public int findAll(String find) {
if (0 == mNativeClass) return 0; // client isn't initialized
int result = find != null ? nativeFindAll(find.toLowerCase(),
find.toUpperCase()) : 0;
invalidate();
mLastFind = find;
return result;
}
/**
* @hide
*/
public void setFindIsUp(boolean isUp) {
mFindIsUp = isUp;
if (isUp) {
recordNewContentSize(mContentWidth, mContentHeight + mFindHeight,
false);
}
if (0 == mNativeClass) return; // client isn't initialized
nativeSetFindIsUp(isUp);
}
// Used to know whether the find dialog is open. Affects whether
// or not we draw the highlights for matches.
private boolean mFindIsUp;
private int mFindHeight;
// Keep track of the last string sent, so we can search again after an
// orientation change or the dismissal of the soft keyboard.
private String mLastFind;
/**
* Return the first substring consisting of the address of a physical
* location. Currently, only addresses in the United States are detected,
* and consist of:
* - a house number
* - a street name
* - a street type (Road, Circle, etc), either spelled out or abbreviated
* - a city name
* - a state or territory, either spelled out or two-letter abbr.
* - an optional 5 digit or 9 digit zip code.
*
* All names must be correctly capitalized, and the zip code, if present,
* must be valid for the state. The street type must be a standard USPS
* spelling or abbreviation. The state or territory must also be spelled
* or abbreviated using USPS standards. The house number may not exceed
* five digits.
* @param addr The string to search for addresses.
*
* @return the address, or if no address is found, return null.
*/
public static String findAddress(String addr) {
return findAddress(addr, false);
}
/**
* @hide
* Return the first substring consisting of the address of a physical
* location. Currently, only addresses in the United States are detected,
* and consist of:
* - a house number
* - a street name
* - a street type (Road, Circle, etc), either spelled out or abbreviated
* - a city name
* - a state or territory, either spelled out or two-letter abbr.
* - an optional 5 digit or 9 digit zip code.
*
* Names are optionally capitalized, and the zip code, if present,
* must be valid for the state. The street type must be a standard USPS
* spelling or abbreviation. The state or territory must also be spelled
* or abbreviated using USPS standards. The house number may not exceed
* five digits.
* @param addr The string to search for addresses.
* @param caseInsensitive addr Set to true to make search ignore case.
*
* @return the address, or if no address is found, return null.
*/
public static String findAddress(String addr, boolean caseInsensitive) {
return WebViewCore.nativeFindAddress(addr, caseInsensitive);
}
/*
* Clear the highlighting surrounding text matches created by findAll.
*/
public void clearMatches() {
mLastFind = "";
if (mNativeClass == 0)
return;
nativeSetFindIsEmpty();
invalidate();
}
/**
* @hide
*/
public void notifyFindDialogDismissed() {
if (mWebViewCore == null) {
return;
}
clearMatches();
setFindIsUp(false);
recordNewContentSize(mContentWidth, mContentHeight - mFindHeight,
false);
// Now that the dialog has been removed, ensure that we scroll to a
// location that is not beyond the end of the page.
pinScrollTo(mScrollX, mScrollY, false, 0);
invalidate();
}
/**
* @hide
*/
public void setFindDialogHeight(int height) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "setFindDialogHeight height=" + height);
}
mFindHeight = height;
}
/**
* Query the document to see if it contains any image references. The
* message object will be dispatched with arg1 being set to 1 if images
* were found and 0 if the document does not reference any images.
* @param response The message that will be dispatched with the result.
*/
public void documentHasImages(Message response) {
if (response == null) {
return;
}
mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response);
}
@Override
public void computeScroll() {
if (mScroller.computeScrollOffset()) {
int oldX = mScrollX;
int oldY = mScrollY;
mScrollX = mScroller.getCurrX();
mScrollY = mScroller.getCurrY();
postInvalidate(); // So we draw again
if (oldX != mScrollX || oldY != mScrollY) {
onScrollChanged(mScrollX, mScrollY, oldX, oldY);
}
} else {
super.computeScroll();
}
}
private static int computeDuration(int dx, int dy) {
int distance = Math.max(Math.abs(dx), Math.abs(dy));
int duration = distance * 1000 / STD_SPEED;
return Math.min(duration, MAX_DURATION);
}
// helper to pin the scrollBy parameters (already in view coordinates)
// returns true if the scroll was changed
private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) {
return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration);
}
// helper to pin the scrollTo parameters (already in view coordinates)
// returns true if the scroll was changed
private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) {
x = pinLocX(x);
y = pinLocY(y);
int dx = x - mScrollX;
int dy = y - mScrollY;
if ((dx | dy) == 0) {
return false;
}
if (animate) {
// Log.d(LOGTAG, "startScroll: " + dx + " " + dy);
mScroller.startScroll(mScrollX, mScrollY, dx, dy,
animationDuration > 0 ? animationDuration : computeDuration(dx, dy));
awakenScrollBars(mScroller.getDuration());
invalidate();
} else {
abortAnimation(); // just in case
scrollTo(x, y);
}
return true;
}
// Scale from content to view coordinates, and pin.
// Also called by jni webview.cpp
private boolean setContentScrollBy(int cx, int cy, boolean animate) {
if (mDrawHistory) {
// disallow WebView to change the scroll position as History Picture
// is used in the view system.
// TODO: as we switchOutDrawHistory when trackball or navigation
// keys are hit, this should be safe. Right?
return false;
}
cx = contentToViewDimension(cx);
cy = contentToViewDimension(cy);
if (mHeightCanMeasure) {
// move our visible rect according to scroll request
if (cy != 0) {
Rect tempRect = new Rect();
calcOurVisibleRect(tempRect);
tempRect.offset(cx, cy);
requestRectangleOnScreen(tempRect);
}
// FIXME: We scroll horizontally no matter what because currently
// ScrollView and ListView will not scroll horizontally.
// FIXME: Why do we only scroll horizontally if there is no
// vertical scroll?
// Log.d(LOGTAG, "setContentScrollBy cy=" + cy);
return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0);
} else {
return pinScrollBy(cx, cy, animate, 0);
}
}
/**
* Called by CallbackProxy when the page finishes loading.
* @param url The URL of the page which has finished loading.
*/
/* package */ void onPageFinished(String url) {
if (mPageThatNeedsToSlideTitleBarOffScreen != null) {
// If the user is now on a different page, or has scrolled the page
// past the point where the title bar is offscreen, ignore the
// scroll request.
if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url)
&& mScrollX == 0 && mScrollY == 0) {
pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true,
SLIDE_TITLE_DURATION);
}
mPageThatNeedsToSlideTitleBarOffScreen = null;
}
}
/**
* The URL of a page that sent a message to scroll the title bar off screen.
*
* Many mobile sites tell the page to scroll to (0,1) in order to scroll the
* title bar off the screen. Sometimes, the scroll position is set before
* the page finishes loading. Rather than scrolling while the page is still
* loading, keep track of the URL and new scroll position so we can perform
* the scroll once the page finishes loading.
*/
private String mPageThatNeedsToSlideTitleBarOffScreen;
/**
* The destination Y scroll position to be used when the page finishes
* loading. See mPageThatNeedsToSlideTitleBarOffScreen.
*/
private int mYDistanceToSlideTitleOffScreen;
// scale from content to view coordinates, and pin
// return true if pin caused the final x/y different than the request cx/cy,
// and a future scroll may reach the request cx/cy after our size has
// changed
// return false if the view scroll to the exact position as it is requested,
// where negative numbers are taken to mean 0
private boolean setContentScrollTo(int cx, int cy) {
if (mDrawHistory) {
// disallow WebView to change the scroll position as History Picture
// is used in the view system.
// One known case where this is called is that WebCore tries to
// restore the scroll position. As history Picture already uses the
// saved scroll position, it is ok to skip this.
return false;
}
int vx;
int vy;
if ((cx | cy) == 0) {
// If the page is being scrolled to (0,0), do not add in the title
// bar's height, and simply scroll to (0,0). (The only other work
// in contentToView_ is to multiply, so this would not change 0.)
vx = 0;
vy = 0;
} else {
vx = contentToViewX(cx);
vy = contentToViewY(cy);
}
// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" +
// vx + " " + vy + "]");
// Some mobile sites attempt to scroll the title bar off the page by
// scrolling to (0,1). If we are at the top left corner of the
// page, assume this is an attempt to scroll off the title bar, and
// animate the title bar off screen slowly enough that the user can see
// it.
if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0
&& mTitleBar != null) {
// FIXME: 100 should be defined somewhere as our max progress.
if (getProgress() < 100) {
// Wait to scroll the title bar off screen until the page has
// finished loading. Keep track of the URL and the destination
// Y position
mPageThatNeedsToSlideTitleBarOffScreen = getUrl();
mYDistanceToSlideTitleOffScreen = vy;
} else {
pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION);
}
// Since we are animating, we have not yet reached the desired
// scroll position. Do not return true to request another attempt
return false;
}
pinScrollTo(vx, vy, false, 0);
// If the request was to scroll to a negative coordinate, treat it as if
// it was a request to scroll to 0
if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) {
return true;
} else {
return false;
}
}
// scale from content to view coordinates, and pin
private void spawnContentScrollTo(int cx, int cy) {
if (mDrawHistory) {
// disallow WebView to change the scroll position as History Picture
// is used in the view system.
return;
}
int vx = contentToViewX(cx);
int vy = contentToViewY(cy);
pinScrollTo(vx, vy, true, 0);
}
/**
* These are from webkit, and are in content coordinate system (unzoomed)
*/
private void contentSizeChanged(boolean updateLayout) {
// suppress 0,0 since we usually see real dimensions soon after
// this avoids drawing the prev content in a funny place. If we find a
// way to consolidate these notifications, this check may become
// obsolete
if ((mContentWidth | mContentHeight) == 0) {
return;
}
if (mHeightCanMeasure) {
if (getMeasuredHeight() != contentToViewDimension(mContentHeight)
|| updateLayout) {
requestLayout();
}
} else if (mWidthCanMeasure) {
if (getMeasuredWidth() != contentToViewDimension(mContentWidth)
|| updateLayout) {
requestLayout();
}
} else {
// If we don't request a layout, try to send our view size to the
// native side to ensure that WebCore has the correct dimensions.
sendViewSizeZoom();
}
}
/**
* Set the WebViewClient that will receive various notifications and
* requests. This will replace the current handler.
* @param client An implementation of WebViewClient.
*/
public void setWebViewClient(WebViewClient client) {
mCallbackProxy.setWebViewClient(client);
}
/**
* Gets the WebViewClient
* @return the current WebViewClient instance.
*
*@hide pending API council approval.
*/
public WebViewClient getWebViewClient() {
return mCallbackProxy.getWebViewClient();
}
/**
* Register the interface to be used when content can not be handled by
* the rendering engine, and should be downloaded instead. This will replace
* the current handler.
* @param listener An implementation of DownloadListener.
*/
public void setDownloadListener(DownloadListener listener) {
mCallbackProxy.setDownloadListener(listener);
}
/**
* Set the chrome handler. This is an implementation of WebChromeClient for
* use in handling Javascript dialogs, favicons, titles, and the progress.
* This will replace the current handler.
* @param client An implementation of WebChromeClient.
*/
public void setWebChromeClient(WebChromeClient client) {
mCallbackProxy.setWebChromeClient(client);
}
/**
* Gets the chrome handler.
* @return the current WebChromeClient instance.
*
* @hide API council approval.
*/
public WebChromeClient getWebChromeClient() {
return mCallbackProxy.getWebChromeClient();
}
/**
* Set the back/forward list client. This is an implementation of
* WebBackForwardListClient for handling new items and changes in the
* history index.
* @param client An implementation of WebBackForwardListClient.
* {@hide}
*/
public void setWebBackForwardListClient(WebBackForwardListClient client) {
mCallbackProxy.setWebBackForwardListClient(client);
}
/**
* Gets the WebBackForwardListClient.
* {@hide}
*/
public WebBackForwardListClient getWebBackForwardListClient() {
return mCallbackProxy.getWebBackForwardListClient();
}
/**
* Set the Picture listener. This is an interface used to receive
* notifications of a new Picture.
* @param listener An implementation of WebView.PictureListener.
*/
public void setPictureListener(PictureListener listener) {
mPictureListener = listener;
}
/**
* {@hide}
*/
/* FIXME: Debug only! Remove for SDK! */
public void externalRepresentation(Message callback) {
mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback);
}
/**
* {@hide}
*/
/* FIXME: Debug only! Remove for SDK! */
public void documentAsText(Message callback) {
mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback);
}
/**
* Use this function to bind an object to Javascript so that the
* methods can be accessed from Javascript.
* <p><strong>IMPORTANT:</strong>
* <ul>
* <li> Using addJavascriptInterface() allows JavaScript to control your
* application. This can be a very useful feature or a dangerous security
* issue. When the HTML in the WebView is untrustworthy (for example, part
* or all of the HTML is provided by some person or process), then an
* attacker could inject HTML that will execute your code and possibly any
* code of the attacker's choosing.<br>
* Do not use addJavascriptInterface() unless all of the HTML in this
* WebView was written by you.</li>
* <li> The Java object that is bound runs in another thread and not in
* the thread that it was constructed in.</li>
* </ul></p>
* @param obj The class instance to bind to Javascript
* @param interfaceName The name to used to expose the class in Javascript
*/
public void addJavascriptInterface(Object obj, String interfaceName) {
WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData();
arg.mObject = obj;
arg.mInterfaceName = interfaceName;
mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg);
}
/**
* Return the WebSettings object used to control the settings for this
* WebView.
* @return A WebSettings object that can be used to control this WebView's
* settings.
*/
public WebSettings getSettings() {
return mWebViewCore.getSettings();
}
/**
* Use this method to inform the webview about packages that are installed
* in the system. This information will be used by the
* navigator.isApplicationInstalled() API.
* @param packageNames is a set of package names that are known to be
* installed in the system.
*
* @hide not a public API
*/
public void addPackageNames(Set<String> packageNames) {
mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames);
}
/**
* Use this method to inform the webview about single packages that are
* installed in the system. This information will be used by the
* navigator.isApplicationInstalled() API.
* @param packageName is the name of a package that is known to be
* installed in the system.
*
* @hide not a public API
*/
public void addPackageName(String packageName) {
mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName);
}
/**
* Use this method to inform the webview about packages that are uninstalled
* in the system. This information will be used by the
* navigator.isApplicationInstalled() API.
* @param packageName is the name of a package that has been uninstalled in
* the system.
*
* @hide not a public API
*/
public void removePackageName(String packageName) {
mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName);
}
/**
* Return the list of currently loaded plugins.
* @return The list of currently loaded plugins.
*
* @deprecated This was used for Gears, which has been deprecated.
*/
@Deprecated
public static synchronized PluginList getPluginList() {
return new PluginList();
}
/**
* @deprecated This was used for Gears, which has been deprecated.
*/
@Deprecated
public void refreshPlugins(boolean reloadOpenPages) { }
//-------------------------------------------------------------------------
// Override View methods
//-------------------------------------------------------------------------
@Override
protected void finalize() throws Throwable {
try {
destroy();
} finally {
super.finalize();
}
}
@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
if (child == mTitleBar) {
// When drawing the title bar, move it horizontally to always show
// at the top of the WebView.
mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft());
}
return super.drawChild(canvas, child, drawingTime);
}
private void drawContent(Canvas canvas) {
// Update the buttons in the picture, so when we draw the picture
// to the screen, they are in the correct state.
// Tell the native side if user is a) touching the screen,
// b) pressing the trackball down, or c) pressing the enter key
// If the cursor is on a button, we need to draw it in the pressed
// state.
// If mNativeClass is 0, we should not reach here, so we do not
// need to check it again.
nativeRecordButtons(hasFocus() && hasWindowFocus(),
mTouchMode == TOUCH_SHORTPRESS_START_MODE
|| mTrackballDown || mGotCenterDown, false);
drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing);
}
@Override
protected void onDraw(Canvas canvas) {
// if mNativeClass is 0, the WebView has been destroyed. Do nothing.
if (mNativeClass == 0) {
return;
}
// if both mContentWidth and mContentHeight are 0, it means there is no
// valid Picture passed to WebView yet. This can happen when WebView
// just starts. Draw the background and return.
if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) {
canvas.drawColor(mBackgroundColor);
return;
}
int saveCount = canvas.save();
if (mTitleBar != null) {
canvas.translate(0, (int) mTitleBar.getHeight());
}
if (mDragTrackerHandler == null) {
drawContent(canvas);
} else {
if (!mDragTrackerHandler.draw(canvas)) {
// sometimes the tracker doesn't draw, even though its active
drawContent(canvas);
}
if (mDragTrackerHandler.isFinished()) {
mDragTrackerHandler = null;
}
}
canvas.restoreToCount(saveCount);
// Now draw the shadow.
int titleH = getVisibleTitleHeight();
if (mTitleBar != null && titleH == 0) {
int height = (int) (5f * getContext().getResources()
.getDisplayMetrics().density);
mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(),
mScrollY + height);
mTitleShadow.draw(canvas);
}
if (AUTO_REDRAW_HACK && mAutoRedraw) {
invalidate();
}
mWebViewCore.signalRepaintDone();
}
@Override
public void setLayoutParams(ViewGroup.LayoutParams params) {
if (params.height == LayoutParams.WRAP_CONTENT) {
mWrapContent = true;
}
super.setLayoutParams(params);
}
@Override
public boolean performLongClick() {
// performLongClick() is the result of a delayed message. If we switch
// to windows overview, the WebView will be temporarily removed from the
// view system. In that case, do nothing.
if (getParent() == null) return false;
if (mNativeClass != 0 && nativeCursorIsTextInput()) {
// Send the click so that the textfield is in focus
centerKeyPressOnTextField();
rebuildWebTextView();
}
if (inEditingMode()) {
return mWebTextView.performLongClick();
} else {
return super.performLongClick();
}
}
boolean inAnimateZoom() {
return mZoomScale != 0;
}
/**
* Need to adjust the WebTextView after a change in zoom, since mActualScale
* has changed. This is especially important for password fields, which are
* drawn by the WebTextView, since it conveys more information than what
* webkit draws. Thus we need to reposition it to show in the correct
* place.
*/
private boolean mNeedToAdjustWebTextView;
private boolean didUpdateTextViewBounds(boolean allowIntersect) {
Rect contentBounds = nativeFocusCandidateNodeBounds();
Rect vBox = contentToViewRect(contentBounds);
Rect visibleRect = new Rect();
calcOurVisibleRect(visibleRect);
// If the textfield is on screen, place the WebTextView in
// its new place, accounting for our new scroll/zoom values,
// and adjust its textsize.
if (allowIntersect ? Rect.intersects(visibleRect, vBox)
: visibleRect.contains(vBox)) {
mWebTextView.setRect(vBox.left, vBox.top, vBox.width(),
vBox.height());
mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
contentToViewDimension(
nativeFocusCandidateTextSize()));
return true;
} else {
// The textfield is now off screen. The user probably
// was not zooming to see the textfield better. Remove
// the WebTextView. If the user types a key, and the
// textfield is still in focus, we will reconstruct
// the WebTextView and scroll it back on screen.
mWebTextView.remove();
return false;
}
}
private void drawExtras(Canvas canvas, int extras, boolean animationsRunning) {
// If mNativeClass is 0, we should not reach here, so we do not
// need to check it again.
if (animationsRunning) {
canvas.setDrawFilter(mWebViewCore.mZoomFilter);
}
nativeDrawExtras(canvas, extras);
canvas.setDrawFilter(null);
}
private void drawCoreAndCursorRing(Canvas canvas, int color,
boolean drawCursorRing) {
if (mDrawHistory) {
canvas.scale(mActualScale, mActualScale);
canvas.drawPicture(mHistoryPicture);
return;
}
boolean animateZoom = mZoomScale != 0;
boolean animateScroll = ((!mScroller.isFinished()
|| mVelocityTracker != null)
&& (mTouchMode != TOUCH_DRAG_MODE ||
mHeldMotionless != MOTIONLESS_TRUE))
|| mDeferTouchMode == TOUCH_DRAG_MODE;
if (mTouchMode == TOUCH_DRAG_MODE) {
if (mHeldMotionless == MOTIONLESS_PENDING) {
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
mHeldMotionless = MOTIONLESS_FALSE;
}
if (mHeldMotionless == MOTIONLESS_FALSE) {
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME);
mHeldMotionless = MOTIONLESS_PENDING;
}
}
if (animateZoom) {
float zoomScale;
int interval = (int) (SystemClock.uptimeMillis() - mZoomStart);
if (interval < ZOOM_ANIMATION_LENGTH) {
float ratio = (float) interval / ZOOM_ANIMATION_LENGTH;
zoomScale = 1.0f / (mInvInitialZoomScale
+ (mInvFinalZoomScale - mInvInitialZoomScale) * ratio);
invalidate();
} else {
zoomScale = mZoomScale;
// set mZoomScale to be 0 as we have done animation
mZoomScale = 0;
WebViewCore.resumeUpdatePicture(mWebViewCore);
// call invalidate() again to draw with the final filters
invalidate();
if (mNeedToAdjustWebTextView) {
mNeedToAdjustWebTextView = false;
if (didUpdateTextViewBounds(false)
&& nativeFocusCandidateIsPassword()) {
// If it is a password field, start drawing the
// WebTextView once again.
mWebTextView.setInPassword(true);
}
}
}
// calculate the intermediate scroll position. As we need to use
// zoomScale, we can't use pinLocX/Y directly. Copy the logic here.
float scale = zoomScale * mInvInitialZoomScale;
int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX)
- mZoomCenterX);
tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth
* zoomScale)) + mScrollX;
int titleHeight = getTitleHeight();
int ty = Math.round(scale
* (mInitialScrollY + mZoomCenterY - titleHeight)
- (mZoomCenterY - titleHeight));
ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty
- titleHeight, getViewHeight(), Math.round(mContentHeight
* zoomScale)) + titleHeight) + mScrollY;
canvas.translate(tx, ty);
canvas.scale(zoomScale, zoomScale);
if (inEditingMode() && !mNeedToAdjustWebTextView
&& mZoomScale != 0) {
// The WebTextView is up. Keep track of this so we can adjust
// its size and placement when we finish zooming
mNeedToAdjustWebTextView = true;
// If it is in password mode, turn it off so it does not draw
// misplaced.
if (nativeFocusCandidateIsPassword()) {
mWebTextView.setInPassword(false);
}
}
} else {
canvas.scale(mActualScale, mActualScale);
}
boolean UIAnimationsRunning = false;
// Currently for each draw we compute the animation values;
// We may in the future decide to do that independently.
if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) {
UIAnimationsRunning = true;
// If we have unfinished (or unstarted) animations,
// we ask for a repaint.
invalidate();
}
mWebViewCore.drawContentPicture(canvas, color,
(animateZoom || mPreviewZoomOnly || UIAnimationsRunning),
animateScroll);
if (mNativeClass == 0) return;
// decide which adornments to draw
int extras = DRAW_EXTRAS_NONE;
if (mFindIsUp) {
// When the FindDialog is up, only draw the matches if we are not in
// the process of scrolling them into view.
if (!animateScroll) {
extras = DRAW_EXTRAS_FIND;
}
} else if (mShiftIsPressed && !nativeFocusIsPlugin()) {
if (!animateZoom && !mPreviewZoomOnly) {
extras = DRAW_EXTRAS_SELECTION;
nativeSetSelectionRegion(mTouchSelection || mExtendSelection);
nativeSetSelectionPointer(!mTouchSelection, mInvActualScale,
mSelectX, mSelectY - getTitleHeight(),
mExtendSelection);
}
} else if (drawCursorRing) {
extras = DRAW_EXTRAS_CURSOR_RING;
}
drawExtras(canvas, extras, UIAnimationsRunning);
if (extras == DRAW_EXTRAS_CURSOR_RING) {
if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) {
mTouchMode = TOUCH_SHORTPRESS_MODE;
HitTestResult hitTest = getHitTestResult();
if (hitTest == null
|| hitTest.mType == HitTestResult.UNKNOWN_TYPE) {
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
}
}
}
if (mFocusSizeChanged) {
mFocusSizeChanged = false;
// If we are zooming, this will get handled above, when the zoom
// finishes. We also do not need to do this unless the WebTextView
// is showing.
if (!animateZoom && inEditingMode()) {
didUpdateTextViewBounds(true);
}
}
}
// draw history
private boolean mDrawHistory = false;
private Picture mHistoryPicture = null;
private int mHistoryWidth = 0;
private int mHistoryHeight = 0;
// Only check the flag, can be called from WebCore thread
boolean drawHistory() {
return mDrawHistory;
}
// Should only be called in UI thread
void switchOutDrawHistory() {
if (null == mWebViewCore) return; // CallbackProxy may trigger this
if (mDrawHistory && mWebViewCore.pictureReady()) {
mDrawHistory = false;
mHistoryPicture = null;
invalidate();
int oldScrollX = mScrollX;
int oldScrollY = mScrollY;
mScrollX = pinLocX(mScrollX);
mScrollY = pinLocY(mScrollY);
if (oldScrollX != mScrollX || oldScrollY != mScrollY) {
mUserScroll = false;
mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX,
oldScrollY);
onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY);
} else {
sendOurVisibleRect();
}
}
}
WebViewCore.CursorData cursorData() {
WebViewCore.CursorData result = new WebViewCore.CursorData();
result.mMoveGeneration = nativeMoveGeneration();
result.mFrame = nativeCursorFramePointer();
Point position = nativeCursorPosition();
result.mX = position.x;
result.mY = position.y;
return result;
}
/**
* Delete text from start to end in the focused textfield. If there is no
* focus, or if start == end, silently fail. If start and end are out of
* order, swap them.
* @param start Beginning of selection to delete.
* @param end End of selection to delete.
*/
/* package */ void deleteSelection(int start, int end) {
mTextGeneration++;
WebViewCore.TextSelectionData data
= new WebViewCore.TextSelectionData(start, end);
mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0,
data);
}
/**
* Set the selection to (start, end) in the focused textfield. If start and
* end are out of order, swap them.
* @param start Beginning of selection.
* @param end End of selection.
*/
/* package */ void setSelection(int start, int end) {
mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end);
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
InputConnection connection = super.onCreateInputConnection(outAttrs);
outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN;
return connection;
}
/**
* Called in response to a message from webkit telling us that the soft
* keyboard should be launched.
*/
private void displaySoftKeyboard(boolean isTextView) {
InputMethodManager imm = (InputMethodManager)
getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
// bring it back to the default scale so that user can enter text
boolean zoom = mActualScale < mDefaultScale;
if (zoom) {
mInZoomOverview = false;
mZoomCenterX = mLastTouchX;
mZoomCenterY = mLastTouchY;
// do not change text wrap scale so that there is no reflow
setNewZoomScale(mDefaultScale, false, false);
}
if (isTextView) {
rebuildWebTextView();
if (inEditingMode()) {
imm.showSoftInput(mWebTextView, 0);
if (zoom) {
didUpdateTextViewBounds(true);
}
return;
}
}
// Used by plugins.
// Also used if the navigation cache is out of date, and
// does not recognize that a textfield is in focus. In that
// case, use WebView as the targeted view.
// see http://b/issue?id=2457459
imm.showSoftInput(this, 0);
}
// Called by WebKit to instruct the UI to hide the keyboard
private void hideSoftKeyboard() {
InputMethodManager imm = (InputMethodManager)
getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(this.getWindowToken(), 0);
}
/*
* This method checks the current focus and cursor and potentially rebuilds
* mWebTextView to have the appropriate properties, such as password,
* multiline, and what text it contains. It also removes it if necessary.
*/
/* package */ void rebuildWebTextView() {
// If the WebView does not have focus, do nothing until it gains focus.
if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) {
return;
}
boolean alreadyThere = inEditingMode();
// inEditingMode can only return true if mWebTextView is non-null,
// so we can safely call remove() if (alreadyThere)
if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) {
if (alreadyThere) {
mWebTextView.remove();
}
return;
}
// At this point, we know we have found an input field, so go ahead
// and create the WebTextView if necessary.
if (mWebTextView == null) {
mWebTextView = new WebTextView(mContext, WebView.this);
// Initialize our generation number.
mTextGeneration = 0;
}
mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
contentToViewDimension(nativeFocusCandidateTextSize()));
Rect visibleRect = new Rect();
calcOurContentVisibleRect(visibleRect);
// Note that sendOurVisibleRect calls viewToContent, so the coordinates
// should be in content coordinates.
Rect bounds = nativeFocusCandidateNodeBounds();
Rect vBox = contentToViewRect(bounds);
mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height());
if (!Rect.intersects(bounds, visibleRect)) {
mWebTextView.bringIntoView();
}
String text = nativeFocusCandidateText();
int nodePointer = nativeFocusCandidatePointer();
if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) {
// It is possible that we have the same textfield, but it has moved,
// i.e. In the case of opening/closing the screen.
// In that case, we need to set the dimensions, but not the other
// aspects.
// If the text has been changed by webkit, update it. However, if
// there has been more UI text input, ignore it. We will receive
// another update when that text is recognized.
if (text != null && !text.equals(mWebTextView.getText().toString())
&& nativeTextGeneration() == mTextGeneration) {
mWebTextView.setTextAndKeepSelection(text);
}
} else {
mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ?
Gravity.RIGHT : Gravity.NO_GRAVITY);
// This needs to be called before setType, which may call
// requestFormData, and it needs to have the correct nodePointer.
mWebTextView.setNodePointer(nodePointer);
mWebTextView.setType(nativeFocusCandidateType());
if (null == text) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "rebuildWebTextView null == text");
}
text = "";
}
mWebTextView.setTextAndKeepSelection(text);
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null && imm.isActive(mWebTextView)) {
imm.restartInput(mWebTextView);
}
}
mWebTextView.requestFocus();
}
/**
* Called by WebTextView to find saved form data associated with the
* textfield
* @param name Name of the textfield.
* @param nodePointer Pointer to the node of the textfield, so it can be
* compared to the currently focused textfield when the data is
* retrieved.
*/
/* package */ void requestFormData(String name, int nodePointer) {
if (mWebViewCore.getSettings().getSaveFormData()) {
Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA);
update.arg1 = nodePointer;
RequestFormData updater = new RequestFormData(name, getUrl(),
update);
Thread t = new Thread(updater);
t.start();
}
}
/**
* Pass a message to find out the <label> associated with the <input>
* identified by nodePointer
* @param framePointer Pointer to the frame containing the <input> node
* @param nodePointer Pointer to the node for which a <label> is desired.
*/
/* package */ void requestLabel(int framePointer, int nodePointer) {
mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer,
nodePointer);
}
/*
* This class requests an Adapter for the WebTextView which shows past
* entries stored in the database. It is a Runnable so that it can be done
* in its own thread, without slowing down the UI.
*/
private class RequestFormData implements Runnable {
private String mName;
private String mUrl;
private Message mUpdateMessage;
public RequestFormData(String name, String url, Message msg) {
mName = name;
mUrl = url;
mUpdateMessage = msg;
}
public void run() {
ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName);
if (pastEntries.size() > 0) {
AutoCompleteAdapter adapter = new
AutoCompleteAdapter(mContext, pastEntries);
mUpdateMessage.obj = adapter;
mUpdateMessage.sendToTarget();
}
}
}
/**
* Dump the display tree to "/sdcard/displayTree.txt"
*
* @hide debug only
*/
public void dumpDisplayTree() {
nativeDumpDisplayTree(getUrl());
}
/**
* Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to
* "/sdcard/domTree.txt"
*
* @hide debug only
*/
public void dumpDomTree(boolean toFile) {
mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0);
}
/**
* Dump the render tree to adb shell if "toFile" is False, otherwise dump it
* to "/sdcard/renderTree.txt"
*
* @hide debug only
*/
public void dumpRenderTree(boolean toFile) {
mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0);
}
/**
* Dump the V8 counters to standard output.
* Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to
* true. Otherwise, this will do nothing.
*
* @hide debug only
*/
public void dumpV8Counters() {
mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS);
}
// This is used to determine long press with the center key. Does not
// affect long press with the trackball/touch.
private boolean mGotCenterDown = false;
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis()
+ ", " + event + ", unicode=" + event.getUnicodeChar());
}
if (mNativeClass == 0) {
return false;
}
// do this hack up front, so it always works, regardless of touch-mode
if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) {
mAutoRedraw = !mAutoRedraw;
if (mAutoRedraw) {
invalidate();
}
return true;
}
// Bubble up the key event if
// 1. it is a system key; or
// 2. the host application wants to handle it;
if (event.isSystem()
|| mCallbackProxy.uiOverrideKeyEvent(event)) {
return false;
}
if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT
|| keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
if (nativeFocusIsPlugin()) {
mShiftIsPressed = true;
} else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) {
setUpSelectXY();
}
}
if (keyCode >= KeyEvent.KEYCODE_DPAD_UP
&& keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) {
switchOutDrawHistory();
if (nativeFocusIsPlugin()) {
letPluginHandleNavKey(keyCode, event.getEventTime(), true);
return true;
}
if (mShiftIsPressed) {
int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT
? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0;
int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ?
-1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0;
int multiplier = event.getRepeatCount() + 1;
moveSelection(xRate * multiplier, yRate * multiplier);
return true;
}
if (navHandledKey(keyCode, 1, false, event.getEventTime())) {
playSoundEffect(keyCodeToSoundsEffect(keyCode));
return true;
}
// Bubble up the key event as WebView doesn't handle it
return false;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
switchOutDrawHistory();
if (event.getRepeatCount() == 0) {
if (mShiftIsPressed && !nativeFocusIsPlugin()) {
return true; // discard press if copy in progress
}
mGotCenterDown = true;
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT);
// Already checked mNativeClass, so we do not need to check it
// again.
nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true);
return true;
}
// Bubble up the key event as WebView doesn't handle it
return false;
}
if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT
&& keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) {
// turn off copy select if a shift-key combo is pressed
mExtendSelection = mShiftIsPressed = false;
if (mTouchMode == TOUCH_SELECT_MODE) {
mTouchMode = TOUCH_INIT_MODE;
}
}
if (getSettings().getNavDump()) {
switch (keyCode) {
case KeyEvent.KEYCODE_4:
dumpDisplayTree();
break;
case KeyEvent.KEYCODE_5:
case KeyEvent.KEYCODE_6:
dumpDomTree(keyCode == KeyEvent.KEYCODE_5);
break;
case KeyEvent.KEYCODE_7:
case KeyEvent.KEYCODE_8:
dumpRenderTree(keyCode == KeyEvent.KEYCODE_7);
break;
case KeyEvent.KEYCODE_9:
nativeInstrumentReport();
return true;
}
}
if (nativeCursorIsTextInput()) {
// This message will put the node in focus, for the DOM's notion
// of focus, and make the focuscontroller active
mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(),
nativeCursorNodePointer());
// This will bring up the WebTextView and put it in focus, for
// our view system's notion of focus
rebuildWebTextView();
// Now we need to pass the event to it
if (inEditingMode()) {
mWebTextView.setDefaultSelection();
return mWebTextView.dispatchKeyEvent(event);
}
} else if (nativeHasFocusNode()) {
// In this case, the cursor is not on a text input, but the focus
// might be. Check it, and if so, hand over to the WebTextView.
rebuildWebTextView();
if (inEditingMode()) {
mWebTextView.setDefaultSelection();
return mWebTextView.dispatchKeyEvent(event);
}
}
// TODO: should we pass all the keys to DOM or check the meta tag
if (nativeCursorWantsKeyEvents() || true) {
// pass the key to DOM
mWebViewCore.sendMessage(EventHub.KEY_DOWN, event);
// return true as DOM handles the key
return true;
}
// Bubble up the key event as WebView doesn't handle it
return false;
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis()
+ ", " + event + ", unicode=" + event.getUnicodeChar());
}
if (mNativeClass == 0) {
return false;
}
// special CALL handling when cursor node's href is "tel:XXX"
if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) {
String text = nativeCursorText();
if (!nativeCursorIsTextInput() && text != null
&& text.startsWith(SCHEME_TEL)) {
Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text));
getContext().startActivity(intent);
return true;
}
}
// Bubble up the key event if
// 1. it is a system key; or
// 2. the host application wants to handle it;
if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) {
return false;
}
if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT
|| keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
if (nativeFocusIsPlugin()) {
mShiftIsPressed = false;
} else if (commitCopy()) {
return true;
}
}
if (keyCode >= KeyEvent.KEYCODE_DPAD_UP
&& keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) {
if (nativeFocusIsPlugin()) {
letPluginHandleNavKey(keyCode, event.getEventTime(), false);
return true;
}
// always handle the navigation keys in the UI thread
// Bubble up the key event as WebView doesn't handle it
return false;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
// remove the long press message first
mPrivateHandler.removeMessages(LONG_PRESS_CENTER);
mGotCenterDown = false;
if (mShiftIsPressed && !nativeFocusIsPlugin()) {
if (mExtendSelection) {
commitCopy();
} else {
mExtendSelection = true;
invalidate(); // draw the i-beam instead of the arrow
}
return true; // discard press if copy in progress
}
// perform the single click
Rect visibleRect = sendOurVisibleRect();
// Note that sendOurVisibleRect calls viewToContent, so the
// coordinates should be in content coordinates.
if (!nativeCursorIntersects(visibleRect)) {
return false;
}
WebViewCore.CursorData data = cursorData();
mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data);
playSoundEffect(SoundEffectConstants.CLICK);
if (nativeCursorIsTextInput()) {
rebuildWebTextView();
centerKeyPressOnTextField();
if (inEditingMode()) {
mWebTextView.setDefaultSelection();
}
return true;
}
clearTextEntry(true);
nativeSetFollowedLink(true);
if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) {
mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame,
nativeCursorNodePointer());
}
return true;
}
// TODO: should we pass all the keys to DOM or check the meta tag
if (nativeCursorWantsKeyEvents() || true) {
// pass the key to DOM
mWebViewCore.sendMessage(EventHub.KEY_UP, event);
// return true as DOM handles the key
return true;
}
// Bubble up the key event as WebView doesn't handle it
return false;
}
private void setUpSelectXY() {
mExtendSelection = false;
mShiftIsPressed = true;
if (nativeHasCursorNode()) {
Rect rect = nativeCursorNodeBounds();
mSelectX = contentToViewX(rect.left);
mSelectY = contentToViewY(rect.top);
} else if (mLastTouchY > getVisibleTitleHeight()) {
mSelectX = mScrollX + (int) mLastTouchX;
mSelectY = mScrollY + (int) mLastTouchY;
} else {
mSelectX = mScrollX + getViewWidth() / 2;
mSelectY = mScrollY + getViewHeightWithTitle() / 2;
}
nativeHideCursor();
}
/**
* Use this method to put the WebView into text selection mode.
* Do not rely on this functionality; it will be deprecated in the future.
*/
public void emulateShiftHeld() {
if (0 == mNativeClass) return; // client isn't initialized
setUpSelectXY();
}
private boolean commitCopy() {
boolean copiedSomething = false;
if (mExtendSelection) {
String selection = nativeGetSelection();
if (selection != "") {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "commitCopy \"" + selection + "\"");
}
Toast.makeText(mContext
, com.android.internal.R.string.text_copied
, Toast.LENGTH_SHORT).show();
copiedSomething = true;
try {
IClipboard clip = IClipboard.Stub.asInterface(
ServiceManager.getService("clipboard"));
clip.setClipboardText(selection);
} catch (android.os.RemoteException e) {
Log.e(LOGTAG, "Clipboard failed", e);
}
}
mExtendSelection = false;
}
mShiftIsPressed = false;
invalidate(); // remove selection region and pointer
if (mTouchMode == TOUCH_SELECT_MODE) {
mTouchMode = TOUCH_INIT_MODE;
}
return copiedSomething;
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if (hasWindowFocus()) setActive(true);
}
@Override
protected void onDetachedFromWindow() {
clearTextEntry(false);
dismissZoomControl();
if (hasWindowFocus()) setActive(false);
super.onDetachedFromWindow();
}
/**
* @deprecated WebView no longer needs to implement
* ViewGroup.OnHierarchyChangeListener. This method does nothing now.
*/
@Deprecated
public void onChildViewAdded(View parent, View child) {}
/**
* @deprecated WebView no longer needs to implement
* ViewGroup.OnHierarchyChangeListener. This method does nothing now.
*/
@Deprecated
public void onChildViewRemoved(View p, View child) {}
/**
* @deprecated WebView should not have implemented
* ViewTreeObserver.OnGlobalFocusChangeListener. This method
* does nothing now.
*/
@Deprecated
public void onGlobalFocusChanged(View oldFocus, View newFocus) {
}
private void setActive(boolean active) {
if (active) {
if (hasFocus()) {
// If our window regained focus, and we have focus, then begin
// drawing the cursor ring
mDrawCursorRing = true;
if (mNativeClass != 0) {
nativeRecordButtons(true, false, true);
if (inEditingMode()) {
mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0);
}
}
} else {
// If our window gained focus, but we do not have it, do not
// draw the cursor ring.
mDrawCursorRing = false;
// We do not call nativeRecordButtons here because we assume
// that when we lost focus, or window focus, it got called with
// false for the first parameter
}
} else {
if (mWebViewCore != null && getSettings().getBuiltInZoomControls()
&& (mZoomButtonsController == null ||
!mZoomButtonsController.isVisible())) {
/*
* The zoom controls come in their own window, so our window
* loses focus. Our policy is to not draw the cursor ring if
* our window is not focused, but this is an exception since
* the user can still navigate the web page with the zoom
* controls showing.
*/
// If our window has lost focus, stop drawing the cursor ring
mDrawCursorRing = false;
}
mGotKeyDown = false;
mShiftIsPressed = false;
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
mTouchMode = TOUCH_DONE_MODE;
if (mNativeClass != 0) {
nativeRecordButtons(false, false, true);
}
setFocusControllerInactive();
}
invalidate();
}
// To avoid drawing the cursor ring, and remove the TextView when our window
// loses focus.
@Override
public void onWindowFocusChanged(boolean hasWindowFocus) {
setActive(hasWindowFocus);
if (hasWindowFocus) {
BrowserFrame.sJavaBridge.setActiveWebView(this);
} else {
BrowserFrame.sJavaBridge.removeActiveWebView(this);
}
super.onWindowFocusChanged(hasWindowFocus);
}
/*
* Pass a message to WebCore Thread, telling the WebCore::Page's
* FocusController to be "inactive" so that it will
* not draw the blinking cursor. It gets set to "active" to draw the cursor
* in WebViewCore.cpp, when the WebCore thread receives key events/clicks.
*/
/* package */ void setFocusControllerInactive() {
// Do not need to also check whether mWebViewCore is null, because
// mNativeClass is only set if mWebViewCore is non null
if (mNativeClass == 0) return;
mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0);
}
@Override
protected void onFocusChanged(boolean focused, int direction,
Rect previouslyFocusedRect) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction);
}
if (focused) {
// When we regain focus, if we have window focus, resume drawing
// the cursor ring
if (hasWindowFocus()) {
mDrawCursorRing = true;
if (mNativeClass != 0) {
nativeRecordButtons(true, false, true);
}
//} else {
// The WebView has gained focus while we do not have
// windowfocus. When our window lost focus, we should have
// called nativeRecordButtons(false...)
}
} else {
// When we lost focus, unless focus went to the TextView (which is
// true if we are in editing mode), stop drawing the cursor ring.
if (!inEditingMode()) {
mDrawCursorRing = false;
if (mNativeClass != 0) {
nativeRecordButtons(false, false, true);
}
setFocusControllerInactive();
}
mGotKeyDown = false;
}
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
/**
* @hide
*/
@Override
protected boolean setFrame(int left, int top, int right, int bottom) {
boolean changed = super.setFrame(left, top, right, bottom);
if (!changed && mHeightCanMeasure) {
// When mHeightCanMeasure is true, we will set mLastHeightSent to 0
// in WebViewCore after we get the first layout. We do call
// requestLayout() when we get contentSizeChanged(). But the View
// system won't call onSizeChanged if the dimension is not changed.
// In this case, we need to call sendViewSizeZoom() explicitly to
// notify the WebKit about the new dimensions.
sendViewSizeZoom();
}
return changed;
}
private static class PostScale implements Runnable {
final WebView mWebView;
final boolean mUpdateTextWrap;
public PostScale(WebView webView, boolean updateTextWrap) {
mWebView = webView;
mUpdateTextWrap = updateTextWrap;
}
public void run() {
if (mWebView.mWebViewCore != null) {
// we always force, in case our height changed, in which case we
// still want to send the notification over to webkit.
mWebView.setNewZoomScale(mWebView.mActualScale,
mUpdateTextWrap, true);
// update the zoom buttons as the scale can be changed
if (mWebView.getSettings().getBuiltInZoomControls()) {
mWebView.updateZoomButtonsEnabled();
}
}
}
}
@Override
protected void onSizeChanged(int w, int h, int ow, int oh) {
super.onSizeChanged(w, h, ow, oh);
// Center zooming to the center of the screen.
if (mZoomScale == 0) { // unless we're already zooming
// To anchor at top left corner.
mZoomCenterX = 0;
mZoomCenterY = getVisibleTitleHeight();
mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);
mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);
}
// adjust the max viewport width depending on the view dimensions. This
// is to ensure the scaling is not going insane. So do not shrink it if
// the view size is temporarily smaller, e.g. when soft keyboard is up.
int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE);
if (newMaxViewportWidth > sMaxViewportWidth) {
sMaxViewportWidth = newMaxViewportWidth;
}
// update mMinZoomScale if the minimum zoom scale is not fixed
if (!mMinZoomScaleFixed) {
// when change from narrow screen to wide screen, the new viewWidth
// can be wider than the old content width. We limit the minimum
// scale to 1.0f. The proper minimum scale will be calculated when
// the new picture shows up.
mMinZoomScale = Math.min(1.0f, (float) getViewWidth()
/ (mDrawHistory ? mHistoryPicture.getWidth()
: mZoomOverviewWidth));
if (mInitialScaleInPercent > 0) {
// limit the minZoomScale to the initialScale if it is set
float initialScale = mInitialScaleInPercent / 100.0f;
if (mMinZoomScale > initialScale) {
mMinZoomScale = initialScale;
}
}
}
dismissZoomControl();
// onSizeChanged() is called during WebView layout. And any
// requestLayout() is blocked during layout. As setNewZoomScale() will
// call its child View to reposition itself through ViewManager's
// scaleAll(), we need to post a Runnable to ensure requestLayout().
// <b/>
// only update the text wrap scale if width changed.
post(new PostScale(this, w != ow));
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
sendOurVisibleRect();
// update WebKit if visible title bar height changed. The logic is same
// as getVisibleTitleHeight.
int titleHeight = getTitleHeight();
if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) {
sendViewSizeZoom();
}
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
boolean dispatch = true;
// Textfields and plugins need to receive the shift up key even if
// another key was released while the shift key was held down.
if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
mGotKeyDown = true;
} else {
if (!mGotKeyDown) {
/*
* We got a key up for which we were not the recipient of
* the original key down. Don't give it to the view.
*/
dispatch = false;
}
mGotKeyDown = false;
}
}
if (dispatch) {
return super.dispatchKeyEvent(event);
} else {
// We didn't dispatch, so let something else handle the key
return false;
}
}
// Here are the snap align logic:
// 1. If it starts nearly horizontally or vertically, snap align;
// 2. If there is a dramitic direction change, let it go;
// 3. If there is a same direction back and forth, lock it.
// adjustable parameters
private int mMinLockSnapReverseDistance;
private static final float MAX_SLOPE_FOR_DIAG = 1.5f;
private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80;
private static int sign(float x) {
return x > 0 ? 1 : (x < 0 ? -1 : 0);
}
// if the page can scroll <= this value, we won't allow the drag tracker
// to have any effect.
private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4;
private class DragTrackerHandler {
private final DragTracker mProxy;
private final float mStartY, mStartX;
private final float mMinDY, mMinDX;
private final float mMaxDY, mMaxDX;
private float mCurrStretchY, mCurrStretchX;
private int mSX, mSY;
private Interpolator mInterp;
private float[] mXY = new float[2];
// inner (non-state) classes can't have enums :(
private static final int DRAGGING_STATE = 0;
private static final int ANIMATING_STATE = 1;
private static final int FINISHED_STATE = 2;
private int mState;
public DragTrackerHandler(float x, float y, DragTracker proxy) {
mProxy = proxy;
int docBottom = computeVerticalScrollRange() + getTitleHeight();
int viewTop = getScrollY();
int viewBottom = viewTop + getHeight();
mStartY = y;
mMinDY = -viewTop;
mMaxDY = docBottom - viewBottom;
if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {
Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y +
" up/down= " + mMinDY + " " + mMaxDY);
}
int docRight = computeHorizontalScrollRange();
int viewLeft = getScrollX();
int viewRight = viewLeft + getWidth();
mStartX = x;
mMinDX = -viewLeft;
mMaxDX = docRight - viewRight;
mState = DRAGGING_STATE;
mProxy.onStartDrag(x, y);
// ensure we buildBitmap at least once
mSX = -99999;
}
private float computeStretch(float delta, float min, float max) {
float stretch = 0;
if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) {
if (delta < min) {
stretch = delta - min;
} else if (delta > max) {
stretch = delta - max;
}
}
return stretch;
}
public void dragTo(float x, float y) {
float sy = computeStretch(mStartY - y, mMinDY, mMaxDY);
float sx = computeStretch(mStartX - x, mMinDX, mMaxDX);
if ((mSnapScrollMode & SNAP_X) != 0) {
sy = 0;
} else if ((mSnapScrollMode & SNAP_Y) != 0) {
sx = 0;
}
if (mCurrStretchX != sx || mCurrStretchY != sy) {
mCurrStretchX = sx;
mCurrStretchY = sy;
if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {
Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx +
" " + sy);
}
if (mProxy.onStretchChange(sx, sy)) {
invalidate();
}
}
}
public void stopDrag() {
final int DURATION = 200;
int now = (int)SystemClock.uptimeMillis();
mInterp = new Interpolator(2);
mXY[0] = mCurrStretchX;
mXY[1] = mCurrStretchY;
// float[] blend = new float[] { 0.5f, 0, 0.75f, 1 };
float[] blend = new float[] { 0, 0.5f, 0.75f, 1 };
mInterp.setKeyFrame(0, now, mXY, blend);
float[] zerozero = new float[] { 0, 0 };
mInterp.setKeyFrame(1, now + DURATION, zerozero, null);
mState = ANIMATING_STATE;
if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {
Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation");
}
}
// Call this after each draw. If it ruturns null, the tracker is done
public boolean isFinished() {
return mState == FINISHED_STATE;
}
private int hiddenHeightOfTitleBar() {
return getTitleHeight() - getVisibleTitleHeight();
}
// need a way to know if 565 or 8888 is the right config for
// capturing the display and giving it to the drag proxy
private Bitmap.Config offscreenBitmapConfig() {
// hard code 565 for now
return Bitmap.Config.RGB_565;
}
/* If the tracker draws, then this returns true, otherwise it will
return false, and draw nothing.
*/
public boolean draw(Canvas canvas) {
if (mCurrStretchX != 0 || mCurrStretchY != 0) {
int sx = getScrollX();
int sy = getScrollY() - hiddenHeightOfTitleBar();
if (mSX != sx || mSY != sy) {
buildBitmap(sx, sy);
mSX = sx;
mSY = sy;
}
if (mState == ANIMATING_STATE) {
Interpolator.Result result = mInterp.timeToValues(mXY);
if (result == Interpolator.Result.FREEZE_END) {
mState = FINISHED_STATE;
return false;
} else {
mProxy.onStretchChange(mXY[0], mXY[1]);
invalidate();
// fall through to the draw
}
}
int count = canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.translate(sx, sy);
mProxy.onDraw(canvas);
canvas.restoreToCount(count);
return true;
}
if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {
Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " +
mCurrStretchX + " " + mCurrStretchY);
}
return false;
}
private void buildBitmap(int sx, int sy) {
int w = getWidth();
int h = getViewHeight();
Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig());
Canvas canvas = new Canvas(bm);
canvas.translate(-sx, -sy);
drawContent(canvas);
if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) {
Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx +
" " + sy + " " + w + " " + h);
}
mProxy.onBitmapChange(bm);
}
}
/** @hide */
public static class DragTracker {
public void onStartDrag(float x, float y) {}
public boolean onStretchChange(float sx, float sy) {
// return true to have us inval the view
return false;
}
public void onStopDrag() {}
public void onBitmapChange(Bitmap bm) {}
public void onDraw(Canvas canvas) {}
}
/** @hide */
public DragTracker getDragTracker() {
return mDragTracker;
}
/** @hide */
public void setDragTracker(DragTracker tracker) {
mDragTracker = tracker;
}
private DragTracker mDragTracker;
private DragTrackerHandler mDragTrackerHandler;
private class ScaleDetectorListener implements
ScaleGestureDetector.OnScaleGestureListener {
public boolean onScaleBegin(ScaleGestureDetector detector) {
// cancel the single touch handling
cancelTouch();
dismissZoomControl();
// reset the zoom overview mode so that the page won't auto grow
mInZoomOverview = false;
// If it is in password mode, turn it off so it does not draw
// misplaced.
if (inEditingMode() && nativeFocusCandidateIsPassword()) {
mWebTextView.setInPassword(false);
}
mViewManager.startZoom();
return true;
}
public void onScaleEnd(ScaleGestureDetector detector) {
if (mPreviewZoomOnly) {
mPreviewZoomOnly = false;
mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);
mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);
// don't reflow when zoom in; when zoom out, do reflow if the
// new scale is almost minimum scale;
boolean reflowNow = (mActualScale - mMinZoomScale
<= MINIMUM_SCALE_INCREMENT)
|| ((mActualScale <= 0.8 * mTextWrapScale));
// force zoom after mPreviewZoomOnly is set to false so that the
// new view size will be passed to the WebKit
setNewZoomScale(mActualScale, reflowNow, true);
// call invalidate() to draw without zoom filter
invalidate();
}
// adjust the edit text view if needed
if (inEditingMode() && didUpdateTextViewBounds(false)
&& nativeFocusCandidateIsPassword()) {
// If it is a password field, start drawing the
// WebTextView once again.
mWebTextView.setInPassword(true);
}
// start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it
// may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it
// may trigger the unwanted fling.
mTouchMode = TOUCH_PINCH_DRAG;
mConfirmMove = true;
startTouch(detector.getFocusX(), detector.getFocusY(),
mLastTouchTime);
mViewManager.endZoom();
}
public boolean onScale(ScaleGestureDetector detector) {
float scale = (float) (Math.round(detector.getScaleFactor()
* mActualScale * 100) / 100.0);
if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) {
mPreviewZoomOnly = true;
// limit the scale change per step
if (scale > mActualScale) {
scale = Math.min(scale, mActualScale * 1.25f);
} else {
scale = Math.max(scale, mActualScale * 0.8f);
}
mZoomCenterX = detector.getFocusX();
mZoomCenterY = detector.getFocusY();
setNewZoomScale(scale, false, false);
invalidate();
return true;
}
return false;
}
}
private boolean hitFocusedPlugin(int contentX, int contentY) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin());
Rect r = nativeFocusNodeBounds();
Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top
+ ", " + r.right + ", " + r.bottom + ")");
}
return nativeFocusIsPlugin()
&& nativeFocusNodeBounds().contains(contentX, contentY);
}
private boolean shouldForwardTouchEvent() {
return mFullScreenHolder != null || (mForwardTouchEvents
&& mTouchMode != TOUCH_SELECT_MODE
&& mPreventDefault != PREVENT_DEFAULT_IGNORE);
}
private boolean inFullScreenMode() {
return mFullScreenHolder != null;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (mNativeClass == 0 || !isClickable() || !isLongClickable()) {
return false;
}
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode="
+ mTouchMode);
}
int action;
float x, y;
long eventTime = ev.getEventTime();
// FIXME: we may consider to give WebKit an option to handle multi-touch
// events later.
if (mSupportMultiTouch && ev.getPointerCount() > 1) {
if (mMinZoomScale < mMaxZoomScale) {
mScaleDetector.onTouchEvent(ev);
if (mScaleDetector.isInProgress()) {
mLastTouchTime = eventTime;
return true;
}
x = mScaleDetector.getFocusX();
y = mScaleDetector.getFocusY();
action = ev.getAction() & MotionEvent.ACTION_MASK;
if (action == MotionEvent.ACTION_POINTER_DOWN) {
cancelTouch();
action = MotionEvent.ACTION_DOWN;
} else if (action == MotionEvent.ACTION_POINTER_UP) {
// set mLastTouchX/Y to the remaining point
mLastTouchX = x;
mLastTouchY = y;
} else if (action == MotionEvent.ACTION_MOVE) {
// negative x or y indicate it is on the edge, skip it.
if (x < 0 || y < 0) {
return true;
}
}
} else {
// if the page disallow zoom, skip multi-pointer action
return true;
}
} else {
action = ev.getAction();
x = ev.getX();
y = ev.getY();
}
// Due to the touch screen edge effect, a touch closer to the edge
// always snapped to the edge. As getViewWidth() can be different from
// getWidth() due to the scrollbar, adjusting the point to match
// getViewWidth(). Same applied to the height.
if (x > getViewWidth() - 1) {
x = getViewWidth() - 1;
}
if (y > getViewHeightWithTitle() - 1) {
y = getViewHeightWithTitle() - 1;
}
float fDeltaX = mLastTouchX - x;
float fDeltaY = mLastTouchY - y;
int deltaX = (int) fDeltaX;
int deltaY = (int) fDeltaY;
int contentX = viewToContentX((int) x + mScrollX);
int contentY = viewToContentY((int) y + mScrollY);
switch (action) {
case MotionEvent.ACTION_DOWN: {
mPreventDefault = PREVENT_DEFAULT_NO;
mConfirmMove = false;
if (!mScroller.isFinished()) {
// stop the current scroll animation, but if this is
// the start of a fling, allow it to add to the current
// fling's velocity
mScroller.abortAnimation();
mTouchMode = TOUCH_DRAG_START_MODE;
mConfirmMove = true;
mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY);
} else if (!inFullScreenMode() && mShiftIsPressed) {
mSelectX = mScrollX + (int) x;
mSelectY = mScrollY + (int) y;
mTouchMode = TOUCH_SELECT_MODE;
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY);
}
nativeMoveSelection(contentX, contentY, false);
mTouchSelection = mExtendSelection = true;
invalidate(); // draw the i-beam instead of the arrow
} else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) {
mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP);
if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) {
mTouchMode = TOUCH_DOUBLE_TAP_MODE;
} else {
// commit the short press action for the previous tap
doShortPress();
mTouchMode = TOUCH_INIT_MODE;
mDeferTouchProcess = (!inFullScreenMode()
&& mForwardTouchEvents) ? hitFocusedPlugin(
contentX, contentY) : false;
}
} else { // the normal case
mPreviewZoomOnly = false;
mTouchMode = TOUCH_INIT_MODE;
mDeferTouchProcess = (!inFullScreenMode()
&& mForwardTouchEvents) ? hitFocusedPlugin(
contentX, contentY) : false;
mWebViewCore.sendMessage(
EventHub.UPDATE_FRAME_CACHE_IF_LOADING);
if (mLogEvent && eventTime - mLastTouchUpTime < 1000) {
EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION,
(eventTime - mLastTouchUpTime), eventTime);
}
}
// Trigger the link
if (mTouchMode == TOUCH_INIT_MODE
|| mTouchMode == TOUCH_DOUBLE_TAP_MODE) {
mPrivateHandler.sendEmptyMessageDelayed(
SWITCH_TO_SHORTPRESS, TAP_TIMEOUT);
mPrivateHandler.sendEmptyMessageDelayed(
SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT);
if (inFullScreenMode() || mDeferTouchProcess) {
mPreventDefault = PREVENT_DEFAULT_YES;
} else if (mForwardTouchEvents) {
mPreventDefault = PREVENT_DEFAULT_MAYBE_YES;
} else {
mPreventDefault = PREVENT_DEFAULT_NO;
}
// pass the touch events from UI thread to WebCore thread
if (shouldForwardTouchEvent()) {
TouchEventData ted = new TouchEventData();
ted.mAction = action;
ted.mX = contentX;
ted.mY = contentY;
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
if (mDeferTouchProcess) {
// still needs to set them for compute deltaX/Y
mLastTouchX = x;
mLastTouchY = y;
ted.mViewX = x;
ted.mViewY = y;
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
break;
}
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
if (!inFullScreenMode()) {
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(PREVENT_DEFAULT_TIMEOUT,
action, 0), TAP_TIMEOUT);
}
}
}
startTouch(x, y, eventTime);
break;
}
case MotionEvent.ACTION_MOVE: {
boolean firstMove = false;
if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY)
>= mTouchSlopSquare) {
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
mConfirmMove = true;
firstMove = true;
if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) {
mTouchMode = TOUCH_INIT_MODE;
}
}
// pass the touch events from UI thread to WebCore thread
if (shouldForwardTouchEvent() && mConfirmMove && (firstMove
|| eventTime - mLastSentTouchTime > mCurrentTouchInterval)) {
mLastSentTouchTime = eventTime;
TouchEventData ted = new TouchEventData();
ted.mAction = action;
ted.mX = contentX;
ted.mY = contentY;
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
if (mDeferTouchProcess) {
ted.mViewX = x;
ted.mViewY = y;
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
break;
}
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
if (firstMove && !inFullScreenMode()) {
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(PREVENT_DEFAULT_TIMEOUT,
action, 0), TAP_TIMEOUT);
}
}
if (mTouchMode == TOUCH_DONE_MODE
|| mPreventDefault == PREVENT_DEFAULT_YES) {
// no dragging during scroll zoom animation, or when prevent
// default is yes
break;
}
if (mVelocityTracker == null) {
Log.e(LOGTAG, "Got null mVelocityTracker when "
+ "mPreventDefault = " + mPreventDefault
+ " mDeferTouchProcess = " + mDeferTouchProcess
+ " mTouchMode = " + mTouchMode);
}
mVelocityTracker.addMovement(ev);
if (mTouchMode != TOUCH_DRAG_MODE) {
if (mTouchMode == TOUCH_SELECT_MODE) {
mSelectX = mScrollX + (int) x;
mSelectY = mScrollY + (int) y;
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY);
}
nativeMoveSelection(contentX, contentY, true);
invalidate();
break;
}
if (!mConfirmMove) {
break;
}
if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES
|| mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) {
// track mLastTouchTime as we may need to do fling at
// ACTION_UP
mLastTouchTime = eventTime;
break;
}
// if it starts nearly horizontal or vertical, enforce it
int ax = Math.abs(deltaX);
int ay = Math.abs(deltaY);
if (ax > MAX_SLOPE_FOR_DIAG * ay) {
mSnapScrollMode = SNAP_X;
mSnapPositive = deltaX > 0;
} else if (ay > MAX_SLOPE_FOR_DIAG * ax) {
mSnapScrollMode = SNAP_Y;
mSnapPositive = deltaY > 0;
}
mTouchMode = TOUCH_DRAG_MODE;
mLastTouchX = x;
mLastTouchY = y;
fDeltaX = 0.0f;
fDeltaY = 0.0f;
deltaX = 0;
deltaY = 0;
startDrag();
}
if (mDragTrackerHandler != null) {
mDragTrackerHandler.dragTo(x, y);
}
// do pan
int newScrollX = pinLocX(mScrollX + deltaX);
int newDeltaX = newScrollX - mScrollX;
if (deltaX != newDeltaX) {
deltaX = newDeltaX;
fDeltaX = (float) newDeltaX;
}
int newScrollY = pinLocY(mScrollY + deltaY);
int newDeltaY = newScrollY - mScrollY;
if (deltaY != newDeltaY) {
deltaY = newDeltaY;
fDeltaY = (float) newDeltaY;
}
boolean done = false;
boolean keepScrollBarsVisible = false;
if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) {
mLastTouchX = x;
mLastTouchY = y;
keepScrollBarsVisible = done = true;
} else {
if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) {
int ax = Math.abs(deltaX);
int ay = Math.abs(deltaY);
if (mSnapScrollMode == SNAP_X) {
// radical change means getting out of snap mode
if (ay > MAX_SLOPE_FOR_DIAG * ax
&& ay > MIN_BREAK_SNAP_CROSS_DISTANCE) {
mSnapScrollMode = SNAP_NONE;
}
// reverse direction means lock in the snap mode
if (ax > MAX_SLOPE_FOR_DIAG * ay &&
(mSnapPositive
? deltaX < -mMinLockSnapReverseDistance
: deltaX > mMinLockSnapReverseDistance)) {
mSnapScrollMode |= SNAP_LOCK;
}
} else {
// radical change means getting out of snap mode
if (ax > MAX_SLOPE_FOR_DIAG * ay
&& ax > MIN_BREAK_SNAP_CROSS_DISTANCE) {
mSnapScrollMode = SNAP_NONE;
}
// reverse direction means lock in the snap mode
if (ay > MAX_SLOPE_FOR_DIAG * ax &&
(mSnapPositive
? deltaY < -mMinLockSnapReverseDistance
: deltaY > mMinLockSnapReverseDistance)) {
mSnapScrollMode |= SNAP_LOCK;
}
}
}
if (mSnapScrollMode != SNAP_NONE) {
if ((mSnapScrollMode & SNAP_X) == SNAP_X) {
deltaY = 0;
} else {
deltaX = 0;
}
}
if ((deltaX | deltaY) != 0) {
if (deltaX != 0) {
mLastTouchX = x;
}
if (deltaY != 0) {
mLastTouchY = y;
}
mHeldMotionless = MOTIONLESS_FALSE;
} else {
// keep the scrollbar on the screen even there is no
// scroll
mLastTouchX = x;
mLastTouchY = y;
keepScrollBarsVisible = true;
}
mLastTouchTime = eventTime;
mUserScroll = true;
}
doDrag(deltaX, deltaY);
if (keepScrollBarsVisible) {
if (mHeldMotionless != MOTIONLESS_TRUE) {
mHeldMotionless = MOTIONLESS_TRUE;
invalidate();
}
// keep the scrollbar on the screen even there is no scroll
awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(),
false);
// return false to indicate that we can't pan out of the
// view space
return !done;
}
break;
}
case MotionEvent.ACTION_UP: {
// pass the touch events from UI thread to WebCore thread
if (shouldForwardTouchEvent()) {
TouchEventData ted = new TouchEventData();
ted.mAction = action;
ted.mX = contentX;
ted.mY = contentY;
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
if (mDeferTouchProcess) {
ted.mViewX = x;
ted.mViewY = y;
}
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
}
mLastTouchUpTime = eventTime;
switch (mTouchMode) {
case TOUCH_DOUBLE_TAP_MODE: // double tap
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
if (inFullScreenMode() || mDeferTouchProcess) {
TouchEventData ted = new TouchEventData();
ted.mAction = WebViewCore.ACTION_DOUBLETAP;
ted.mX = contentX;
ted.mY = contentY;
ted.mMetaState = ev.getMetaState();
ted.mReprocess = mDeferTouchProcess;
if (mDeferTouchProcess) {
ted.mViewX = x;
ted.mViewY = y;
}
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
} else if (mPreventDefault != PREVENT_DEFAULT_YES){
doDoubleTap();
mTouchMode = TOUCH_DONE_MODE;
}
break;
case TOUCH_SELECT_MODE:
commitCopy();
mTouchSelection = false;
break;
case TOUCH_INIT_MODE: // tap
case TOUCH_SHORTPRESS_START_MODE:
case TOUCH_SHORTPRESS_MODE:
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
if (mConfirmMove) {
Log.w(LOGTAG, "Miss a drag as we are waiting for" +
" WebCore's response for touch down.");
if (mPreventDefault != PREVENT_DEFAULT_YES
&& (computeMaxScrollX() > 0
|| computeMaxScrollY() > 0)) {
// UI takes control back, cancel WebCore touch
cancelWebCoreTouchEvent(contentX, contentY,
true);
// we will not rewrite drag code here, but we
// will try fling if it applies.
WebViewCore.reducePriority();
// to get better performance, pause updating the
// picture
WebViewCore.pauseUpdatePicture(mWebViewCore);
// fall through to TOUCH_DRAG_MODE
} else {
// WebKit may consume the touch event and modify
// DOM. drawContentPicture() will be called with
// animateSroll as true for better performance.
// Force redraw in high-quality.
invalidate();
break;
}
} else {
if (mTouchMode == TOUCH_INIT_MODE) {
mPrivateHandler.sendEmptyMessageDelayed(
RELEASE_SINGLE_TAP, ViewConfiguration
.getDoubleTapTimeout());
} else {
doShortPress();
}
break;
}
case TOUCH_DRAG_MODE:
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
// if the user waits a while w/o moving before the
// up, we don't want to do a fling
if (eventTime - mLastTouchTime <= MIN_FLING_TIME) {
if (mVelocityTracker == null) {
Log.e(LOGTAG, "Got null mVelocityTracker when "
+ "mPreventDefault = "
+ mPreventDefault
+ " mDeferTouchProcess = "
+ mDeferTouchProcess);
}
mVelocityTracker.addMovement(ev);
// set to MOTIONLESS_IGNORE so that it won't keep
// removing and sending message in
// drawCoreAndCursorRing()
mHeldMotionless = MOTIONLESS_IGNORE;
doFling();
break;
}
// redraw in high-quality, as we're done dragging
mHeldMotionless = MOTIONLESS_TRUE;
invalidate();
// fall through
case TOUCH_DRAG_START_MODE:
// TOUCH_DRAG_START_MODE should not happen for the real
// device as we almost certain will get a MOVE. But this
// is possible on emulator.
mLastVelocity = 0;
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
break;
}
stopTouch();
break;
}
case MotionEvent.ACTION_CANCEL: {
if (mTouchMode == TOUCH_DRAG_MODE) {
invalidate();
}
cancelWebCoreTouchEvent(contentX, contentY, false);
cancelTouch();
break;
}
}
return true;
}
private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) {
if (shouldForwardTouchEvent()) {
if (removeEvents) {
mWebViewCore.removeMessages(EventHub.TOUCH_EVENT);
}
TouchEventData ted = new TouchEventData();
ted.mX = x;
ted.mY = y;
ted.mAction = MotionEvent.ACTION_CANCEL;
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
mPreventDefault = PREVENT_DEFAULT_IGNORE;
}
}
private void startTouch(float x, float y, long eventTime) {
// Remember where the motion event started
mLastTouchX = x;
mLastTouchY = y;
mLastTouchTime = eventTime;
mVelocityTracker = VelocityTracker.obtain();
mSnapScrollMode = SNAP_NONE;
if (mDragTracker != null) {
mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker);
}
}
private void startDrag() {
WebViewCore.reducePriority();
// to get better performance, pause updating the picture
WebViewCore.pauseUpdatePicture(mWebViewCore);
if (!mDragFromTextInput) {
nativeHideCursor();
}
WebSettings settings = getSettings();
if (settings.supportZoom()
&& settings.getBuiltInZoomControls()
&& !getZoomButtonsController().isVisible()
&& mMinZoomScale < mMaxZoomScale
&& (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF
|| mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF)) {
mZoomButtonsController.setVisible(true);
int count = settings.getDoubleTapToastCount();
if (mInZoomOverview && count > 0) {
settings.setDoubleTapToastCount(--count);
Toast.makeText(mContext,
com.android.internal.R.string.double_tap_toast,
Toast.LENGTH_LONG).show();
}
}
}
private void doDrag(int deltaX, int deltaY) {
if ((deltaX | deltaY) != 0) {
scrollBy(deltaX, deltaY);
}
if (!getSettings().getBuiltInZoomControls()) {
boolean showPlusMinus = mMinZoomScale < mMaxZoomScale;
if (mZoomControls != null && showPlusMinus) {
if (mZoomControls.getVisibility() == View.VISIBLE) {
mPrivateHandler.removeCallbacks(mZoomControlRunnable);
} else {
mZoomControls.show(showPlusMinus, false);
}
mPrivateHandler.postDelayed(mZoomControlRunnable,
ZOOM_CONTROLS_TIMEOUT);
}
}
}
private void stopTouch() {
if (mDragTrackerHandler != null) {
mDragTrackerHandler.stopDrag();
}
// we also use mVelocityTracker == null to tell us that we are
// not "moving around", so we can take the slower/prettier
// mode in the drawing code
if (mVelocityTracker != null) {
mVelocityTracker.recycle();
mVelocityTracker = null;
}
}
private void cancelTouch() {
if (mDragTrackerHandler != null) {
mDragTrackerHandler.stopDrag();
}
// we also use mVelocityTracker == null to tell us that we are
// not "moving around", so we can take the slower/prettier
// mode in the drawing code
if (mVelocityTracker != null) {
mVelocityTracker.recycle();
mVelocityTracker = null;
}
if (mTouchMode == TOUCH_DRAG_MODE) {
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS);
mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS);
mHeldMotionless = MOTIONLESS_TRUE;
mTouchMode = TOUCH_DONE_MODE;
nativeHideCursor();
}
private long mTrackballFirstTime = 0;
private long mTrackballLastTime = 0;
private float mTrackballRemainsX = 0.0f;
private float mTrackballRemainsY = 0.0f;
private int mTrackballXMove = 0;
private int mTrackballYMove = 0;
private boolean mExtendSelection = false;
private boolean mTouchSelection = false;
private static final int TRACKBALL_KEY_TIMEOUT = 1000;
private static final int TRACKBALL_TIMEOUT = 200;
private static final int TRACKBALL_WAIT = 100;
private static final int TRACKBALL_SCALE = 400;
private static final int TRACKBALL_SCROLL_COUNT = 5;
private static final int TRACKBALL_MOVE_COUNT = 10;
private static final int TRACKBALL_MULTIPLIER = 3;
private static final int SELECT_CURSOR_OFFSET = 16;
private int mSelectX = 0;
private int mSelectY = 0;
private boolean mFocusSizeChanged = false;
private boolean mShiftIsPressed = false;
private boolean mTrackballDown = false;
private long mTrackballUpTime = 0;
private long mLastCursorTime = 0;
private Rect mLastCursorBounds;
// Set by default; BrowserActivity clears to interpret trackball data
// directly for movement. Currently, the framework only passes
// arrow key events, not trackball events, from one child to the next
private boolean mMapTrackballToArrowKeys = true;
public void setMapTrackballToArrowKeys(boolean setMap) {
mMapTrackballToArrowKeys = setMap;
}
void resetTrackballTime() {
mTrackballLastTime = 0;
}
@Override
public boolean onTrackballEvent(MotionEvent ev) {
long time = ev.getEventTime();
if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) {
if (ev.getY() > 0) pageDown(true);
if (ev.getY() < 0) pageUp(true);
return true;
}
boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0
|| !nativeFocusIsPlugin());
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
if (shiftPressed) {
return true; // discard press if copy in progress
}
mTrackballDown = true;
if (mNativeClass == 0) {
return false;
}
nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true);
if (time - mLastCursorTime <= TRACKBALL_TIMEOUT
&& !mLastCursorBounds.equals(nativeGetCursorRingBounds())) {
nativeSelectBestAt(mLastCursorBounds);
}
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "onTrackballEvent down ev=" + ev
+ " time=" + time
+ " mLastCursorTime=" + mLastCursorTime);
}
if (isInTouchMode()) requestFocusFromTouch();
return false; // let common code in onKeyDown at it
}
if (ev.getAction() == MotionEvent.ACTION_UP) {
// LONG_PRESS_CENTER is set in common onKeyDown
mPrivateHandler.removeMessages(LONG_PRESS_CENTER);
mTrackballDown = false;
mTrackballUpTime = time;
if (shiftPressed) {
if (mExtendSelection) {
commitCopy();
} else {
mExtendSelection = true;
invalidate(); // draw the i-beam instead of the arrow
}
return true; // discard press if copy in progress
}
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "onTrackballEvent up ev=" + ev
+ " time=" + time
);
}
return false; // let common code in onKeyUp at it
}
if (mMapTrackballToArrowKeys && mShiftIsPressed == false) {
if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit");
return false;
}
if (mTrackballDown) {
if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit");
return true; // discard move if trackball is down
}
if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) {
if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit");
return true;
}
// TODO: alternatively we can do panning as touch does
switchOutDrawHistory();
if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) {
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "onTrackballEvent time="
+ time + " last=" + mTrackballLastTime);
}
mTrackballFirstTime = time;
mTrackballXMove = mTrackballYMove = 0;
}
mTrackballLastTime = time;
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time);
}
mTrackballRemainsX += ev.getX();
mTrackballRemainsY += ev.getY();
doTrackball(time);
return true;
}
void moveSelection(float xRate, float yRate) {
if (mNativeClass == 0)
return;
int width = getViewWidth();
int height = getViewHeight();
mSelectX += xRate;
mSelectY += yRate;
int maxX = width + mScrollX;
int maxY = height + mScrollY;
mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET
, mSelectX));
mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET
, mSelectY));
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "moveSelection"
+ " mSelectX=" + mSelectX
+ " mSelectY=" + mSelectY
+ " mScrollX=" + mScrollX
+ " mScrollY=" + mScrollY
+ " xRate=" + xRate
+ " yRate=" + yRate
);
}
nativeMoveSelection(viewToContentX(mSelectX),
viewToContentY(mSelectY), mExtendSelection);
int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET
: mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET
: 0;
int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET
: mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET
: 0;
pinScrollBy(scrollX, scrollY, true, 0);
Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1);
requestRectangleOnScreen(select);
invalidate();
}
private int scaleTrackballX(float xRate, int width) {
int xMove = (int) (xRate / TRACKBALL_SCALE * width);
int nextXMove = xMove;
if (xMove > 0) {
if (xMove > mTrackballXMove) {
xMove -= mTrackballXMove;
}
} else if (xMove < mTrackballXMove) {
xMove -= mTrackballXMove;
}
mTrackballXMove = nextXMove;
return xMove;
}
private int scaleTrackballY(float yRate, int height) {
int yMove = (int) (yRate / TRACKBALL_SCALE * height);
int nextYMove = yMove;
if (yMove > 0) {
if (yMove > mTrackballYMove) {
yMove -= mTrackballYMove;
}
} else if (yMove < mTrackballYMove) {
yMove -= mTrackballYMove;
}
mTrackballYMove = nextYMove;
return yMove;
}
private int keyCodeToSoundsEffect(int keyCode) {
switch(keyCode) {
case KeyEvent.KEYCODE_DPAD_UP:
return SoundEffectConstants.NAVIGATION_UP;
case KeyEvent.KEYCODE_DPAD_RIGHT:
return SoundEffectConstants.NAVIGATION_RIGHT;
case KeyEvent.KEYCODE_DPAD_DOWN:
return SoundEffectConstants.NAVIGATION_DOWN;
case KeyEvent.KEYCODE_DPAD_LEFT:
return SoundEffectConstants.NAVIGATION_LEFT;
}
throw new IllegalArgumentException("keyCode must be one of " +
"{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " +
"KEYCODE_DPAD_LEFT}.");
}
private void doTrackball(long time) {
int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime);
if (elapsed == 0) {
elapsed = TRACKBALL_TIMEOUT;
}
float xRate = mTrackballRemainsX * 1000 / elapsed;
float yRate = mTrackballRemainsY * 1000 / elapsed;
int viewWidth = getViewWidth();
int viewHeight = getViewHeight();
if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) {
moveSelection(scaleTrackballX(xRate, viewWidth),
scaleTrackballY(yRate, viewHeight));
mTrackballRemainsX = mTrackballRemainsY = 0;
return;
}
float ax = Math.abs(xRate);
float ay = Math.abs(yRate);
float maxA = Math.max(ax, ay);
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "doTrackball elapsed=" + elapsed
+ " xRate=" + xRate
+ " yRate=" + yRate
+ " mTrackballRemainsX=" + mTrackballRemainsX
+ " mTrackballRemainsY=" + mTrackballRemainsY);
}
int width = mContentWidth - viewWidth;
int height = mContentHeight - viewHeight;
if (width < 0) width = 0;
if (height < 0) height = 0;
ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER);
ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER);
maxA = Math.max(ax, ay);
int count = Math.max(0, (int) maxA);
int oldScrollX = mScrollX;
int oldScrollY = mScrollY;
if (count > 0) {
int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ?
KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN :
mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT :
KeyEvent.KEYCODE_DPAD_RIGHT;
count = Math.min(count, TRACKBALL_MOVE_COUNT);
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode
+ " count=" + count
+ " mTrackballRemainsX=" + mTrackballRemainsX
+ " mTrackballRemainsY=" + mTrackballRemainsY);
}
if (mNativeClass != 0 && nativeFocusIsPlugin()) {
for (int i = 0; i < count; i++) {
letPluginHandleNavKey(selectKeyCode, time, true);
}
letPluginHandleNavKey(selectKeyCode, time, false);
} else if (navHandledKey(selectKeyCode, count, false, time)) {
playSoundEffect(keyCodeToSoundsEffect(selectKeyCode));
}
mTrackballRemainsX = mTrackballRemainsY = 0;
}
if (count >= TRACKBALL_SCROLL_COUNT) {
int xMove = scaleTrackballX(xRate, width);
int yMove = scaleTrackballY(yRate, height);
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "doTrackball pinScrollBy"
+ " count=" + count
+ " xMove=" + xMove + " yMove=" + yMove
+ " mScrollX-oldScrollX=" + (mScrollX-oldScrollX)
+ " mScrollY-oldScrollY=" + (mScrollY-oldScrollY)
);
}
if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) {
xMove = 0;
}
if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) {
yMove = 0;
}
if (xMove != 0 || yMove != 0) {
pinScrollBy(xMove, yMove, true, 0);
}
mUserScroll = true;
}
}
private int computeMaxScrollX() {
return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0);
}
private int computeMaxScrollY() {
return Math.max(computeVerticalScrollRange() + getTitleHeight()
- getViewHeightWithTitle(), 0);
}
public void flingScroll(int vx, int vy) {
mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0,
computeMaxScrollY());
invalidate();
}
private void doFling() {
if (mVelocityTracker == null) {
return;
}
int maxX = computeMaxScrollX();
int maxY = computeMaxScrollY();
mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling);
int vx = (int) mVelocityTracker.getXVelocity();
int vy = (int) mVelocityTracker.getYVelocity();
if (mSnapScrollMode != SNAP_NONE) {
if ((mSnapScrollMode & SNAP_X) == SNAP_X) {
vy = 0;
} else {
vx = 0;
}
}
if (true /* EMG release: make our fling more like Maps' */) {
// maps cuts their velocity in half
vx = vx * 3 / 4;
vy = vy * 3 / 4;
}
if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) {
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
return;
}
float currentVelocity = mScroller.getCurrVelocity();
if (mLastVelocity > 0 && currentVelocity > 0) {
float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX)
- Math.atan2(vy, vx)));
final float circle = (float) (Math.PI) * 2.0f;
if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) {
vx += currentVelocity * mLastVelX / mLastVelocity;
vy += currentVelocity * mLastVelY / mLastVelocity;
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy);
}
} else if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "doFling missed " + deltaR / circle);
}
} else if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "doFling start last=" + mLastVelocity
+ " current=" + currentVelocity
+ " vx=" + vx + " vy=" + vy
+ " maxX=" + maxX + " maxY=" + maxY
+ " mScrollX=" + mScrollX + " mScrollY=" + mScrollY);
}
mLastVelX = vx;
mLastVelY = vy;
mLastVelocity = (float) Math.hypot(vx, vy);
mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY);
// TODO: duration is calculated based on velocity, if the range is
// small, the animation will stop before duration is up. We may
// want to calculate how long the animation is going to run to precisely
// resume the webcore update.
final int time = mScroller.getDuration();
mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time);
awakenScrollBars(time);
invalidate();
}
private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) {
float oldScale = mActualScale;
mInitialScrollX = mScrollX;
mInitialScrollY = mScrollY;
// snap to DEFAULT_SCALE if it is close
if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) {
scale = mDefaultScale;
}
setNewZoomScale(scale, updateTextWrapScale, false);
if (oldScale != mActualScale) {
// use mZoomPickerScale to see zoom preview first
mZoomStart = SystemClock.uptimeMillis();
mInvInitialZoomScale = 1.0f / oldScale;
mInvFinalZoomScale = 1.0f / mActualScale;
mZoomScale = mActualScale;
WebViewCore.pauseUpdatePicture(mWebViewCore);
invalidate();
return true;
} else {
return false;
}
}
/**
* Returns a view containing zoom controls i.e. +/- buttons. The caller is
* in charge of installing this view to the view hierarchy. This view will
* become visible when the user starts scrolling via touch and fade away if
* the user does not interact with it.
* <p/>
* API version 3 introduces a built-in zoom mechanism that is shown
* automatically by the MapView. This is the preferred approach for
* showing the zoom UI.
*
* @deprecated The built-in zoom mechanism is preferred, see
* {@link WebSettings#setBuiltInZoomControls(boolean)}.
*/
@Deprecated
public View getZoomControls() {
if (!getSettings().supportZoom()) {
Log.w(LOGTAG, "This WebView doesn't support zoom.");
return null;
}
if (mZoomControls == null) {
mZoomControls = createZoomControls();
/*
* need to be set to VISIBLE first so that getMeasuredHeight() in
* {@link #onSizeChanged()} can return the measured value for proper
* layout.
*/
mZoomControls.setVisibility(View.VISIBLE);
mZoomControlRunnable = new Runnable() {
public void run() {
/* Don't dismiss the controls if the user has
* focus on them. Wait and check again later.
*/
if (!mZoomControls.hasFocus()) {
mZoomControls.hide();
} else {
mPrivateHandler.removeCallbacks(mZoomControlRunnable);
mPrivateHandler.postDelayed(mZoomControlRunnable,
ZOOM_CONTROLS_TIMEOUT);
}
}
};
}
return mZoomControls;
}
private ExtendedZoomControls createZoomControls() {
ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext
, null);
zoomControls.setOnZoomInClickListener(new OnClickListener() {
public void onClick(View v) {
// reset time out
mPrivateHandler.removeCallbacks(mZoomControlRunnable);
mPrivateHandler.postDelayed(mZoomControlRunnable,
ZOOM_CONTROLS_TIMEOUT);
zoomIn();
}
});
zoomControls.setOnZoomOutClickListener(new OnClickListener() {
public void onClick(View v) {
// reset time out
mPrivateHandler.removeCallbacks(mZoomControlRunnable);
mPrivateHandler.postDelayed(mZoomControlRunnable,
ZOOM_CONTROLS_TIMEOUT);
zoomOut();
}
});
return zoomControls;
}
/**
* Gets the {@link ZoomButtonsController} which can be used to add
* additional buttons to the zoom controls window.
*
* @return The instance of {@link ZoomButtonsController} used by this class,
* or null if it is unavailable.
* @hide
*/
public ZoomButtonsController getZoomButtonsController() {
if (mZoomButtonsController == null) {
mZoomButtonsController = new ZoomButtonsController(this);
mZoomButtonsController.setOnZoomListener(mZoomListener);
// ZoomButtonsController positions the buttons at the bottom, but in
// the middle. Change their layout parameters so they appear on the
// right.
View controls = mZoomButtonsController.getZoomControls();
ViewGroup.LayoutParams params = controls.getLayoutParams();
if (params instanceof FrameLayout.LayoutParams) {
FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) params;
frameParams.gravity = Gravity.RIGHT;
}
}
return mZoomButtonsController;
}
/**
* Perform zoom in in the webview
* @return TRUE if zoom in succeeds. FALSE if no zoom changes.
*/
public boolean zoomIn() {
// TODO: alternatively we can disallow this during draw history mode
switchOutDrawHistory();
mInZoomOverview = false;
// Center zooming to the center of the screen.
mZoomCenterX = getViewWidth() * .5f;
mZoomCenterY = getViewHeight() * .5f;
mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);
mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);
return zoomWithPreview(mActualScale * 1.25f, true);
}
/**
* Perform zoom out in the webview
* @return TRUE if zoom out succeeds. FALSE if no zoom changes.
*/
public boolean zoomOut() {
// TODO: alternatively we can disallow this during draw history mode
switchOutDrawHistory();
// Center zooming to the center of the screen.
mZoomCenterX = getViewWidth() * .5f;
mZoomCenterY = getViewHeight() * .5f;
mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);
mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);
return zoomWithPreview(mActualScale * 0.8f, true);
}
private void updateSelection() {
if (mNativeClass == 0) {
return;
}
// mLastTouchX and mLastTouchY are the point in the current viewport
int contentX = viewToContentX((int) mLastTouchX + mScrollX);
int contentY = viewToContentY((int) mLastTouchY + mScrollY);
Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop,
contentX + mNavSlop, contentY + mNavSlop);
nativeSelectBestAt(rect);
}
/**
* Scroll the focused text field/area to match the WebTextView
* @param xPercent New x position of the WebTextView from 0 to 1.
* @param y New y position of the WebTextView in view coordinates
*/
/*package*/ void scrollFocusedTextInput(float xPercent, int y) {
if (!inEditingMode() || mWebViewCore == null) {
return;
}
mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT,
// Since this position is relative to the top of the text input
// field, we do not need to take the title bar's height into
// consideration.
viewToContentDimension(y),
new Float(xPercent));
}
/**
* Set our starting point and time for a drag from the WebTextView.
*/
/*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) {
if (!inEditingMode()) {
return;
}
mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX);
mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY);
mLastTouchTime = eventTime;
if (!mScroller.isFinished()) {
abortAnimation();
mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY);
}
mSnapScrollMode = SNAP_NONE;
mVelocityTracker = VelocityTracker.obtain();
mTouchMode = TOUCH_DRAG_START_MODE;
}
/**
* Given a motion event from the WebTextView, set its location to our
* coordinates, and handle the event.
*/
/*package*/ boolean textFieldDrag(MotionEvent event) {
if (!inEditingMode()) {
return false;
}
mDragFromTextInput = true;
event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX),
(float) (mWebTextView.getTop() - mScrollY));
boolean result = onTouchEvent(event);
mDragFromTextInput = false;
return result;
}
/**
* Due a touch up from a WebTextView. This will be handled by webkit to
* change the selection.
* @param event MotionEvent in the WebTextView's coordinates.
*/
/*package*/ void touchUpOnTextField(MotionEvent event) {
if (!inEditingMode()) {
return;
}
int x = viewToContentX((int) event.getX() + mWebTextView.getLeft());
int y = viewToContentY((int) event.getY() + mWebTextView.getTop());
nativeMotionUp(x, y, mNavSlop);
}
/**
* Called when pressing the center key or trackball on a textfield.
*/
/*package*/ void centerKeyPressOnTextField() {
mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(),
nativeCursorNodePointer());
}
private void doShortPress() {
if (mNativeClass == 0) {
return;
}
if (mPreventDefault == PREVENT_DEFAULT_YES) {
return;
}
mTouchMode = TOUCH_DONE_MODE;
switchOutDrawHistory();
// mLastTouchX and mLastTouchY are the point in the current viewport
int contentX = viewToContentX((int) mLastTouchX + mScrollX);
int contentY = viewToContentY((int) mLastTouchY + mScrollY);
if (nativePointInNavCache(contentX, contentY, mNavSlop)) {
WebViewCore.MotionUpData motionUpData = new WebViewCore
.MotionUpData();
motionUpData.mFrame = nativeCacheHitFramePointer();
motionUpData.mNode = nativeCacheHitNodePointer();
motionUpData.mBounds = nativeCacheHitNodeBounds();
motionUpData.mX = contentX;
motionUpData.mY = contentY;
mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS,
motionUpData);
} else {
doMotionUp(contentX, contentY);
}
}
private void doMotionUp(int contentX, int contentY) {
if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) {
EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER);
}
if (nativeHasCursorNode() && !nativeCursorIsTextInput()) {
playSoundEffect(SoundEffectConstants.CLICK);
}
}
/*
* Return true if the view (Plugin) is fully visible and maximized inside
* the WebView.
*/
private boolean isPluginFitOnScreen(ViewManager.ChildView view) {
int viewWidth = getViewWidth();
int viewHeight = getViewHeightWithTitle();
float scale = Math.min((float) viewWidth / view.width,
(float) viewHeight / view.height);
if (scale < mMinZoomScale) {
scale = mMinZoomScale;
} else if (scale > mMaxZoomScale) {
scale = mMaxZoomScale;
}
if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) {
if (contentToViewX(view.x) >= mScrollX
&& contentToViewX(view.x + view.width) <= mScrollX
+ viewWidth
&& contentToViewY(view.y) >= mScrollY
&& contentToViewY(view.y + view.height) <= mScrollY
+ viewHeight) {
return true;
}
}
return false;
}
/*
* Maximize and center the rectangle, specified in the document coordinate
* space, inside the WebView. If the zoom doesn't need to be changed, do an
* animated scroll to center it. If the zoom needs to be changed, find the
* zoom center and do a smooth zoom transition.
*/
private void centerFitRect(int docX, int docY, int docWidth, int docHeight) {
int viewWidth = getViewWidth();
int viewHeight = getViewHeightWithTitle();
float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight
/ docHeight);
if (scale < mMinZoomScale) {
scale = mMinZoomScale;
} else if (scale > mMaxZoomScale) {
scale = mMaxZoomScale;
}
if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) {
pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2,
contentToViewY(docY + docHeight / 2) - viewHeight / 2,
true, 0);
} else {
float oldScreenX = docX * mActualScale - mScrollX;
float rectViewX = docX * scale;
float rectViewWidth = docWidth * scale;
float newMaxWidth = mContentWidth * scale;
float newScreenX = (viewWidth - rectViewWidth) / 2;
// pin the newX to the WebView
if (newScreenX > rectViewX) {
newScreenX = rectViewX;
} else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) {
newScreenX = viewWidth - (newMaxWidth - rectViewX);
}
mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale)
/ (scale - mActualScale);
float oldScreenY = docY * mActualScale + getTitleHeight()
- mScrollY;
float rectViewY = docY * scale + getTitleHeight();
float rectViewHeight = docHeight * scale;
float newMaxHeight = mContentHeight * scale + getTitleHeight();
float newScreenY = (viewHeight - rectViewHeight) / 2;
// pin the newY to the WebView
if (newScreenY > rectViewY) {
newScreenY = rectViewY;
} else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) {
newScreenY = viewHeight - (newMaxHeight - rectViewY);
}
mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale)
/ (scale - mActualScale);
zoomWithPreview(scale, false);
}
}
void dismissZoomControl() {
if (mWebViewCore == null) {
// maybe called after WebView's destroy(). As we can't get settings,
// just hide zoom control for both styles.
if (mZoomButtonsController != null) {
mZoomButtonsController.setVisible(false);
}
if (mZoomControls != null) {
mZoomControls.hide();
}
return;
}
WebSettings settings = getSettings();
if (settings.getBuiltInZoomControls()) {
if (mZoomButtonsController != null) {
mZoomButtonsController.setVisible(false);
}
} else {
if (mZoomControlRunnable != null) {
mPrivateHandler.removeCallbacks(mZoomControlRunnable);
}
if (mZoomControls != null) {
mZoomControls.hide();
}
}
}
// Rule for double tap:
// 1. if the current scale is not same as the text wrap scale and layout
// algorithm is NARROW_COLUMNS, fit to column;
// 2. if the current state is not overview mode, change to overview mode;
// 3. if the current state is overview mode, change to default scale.
private void doDoubleTap() {
if (mWebViewCore.getSettings().getUseWideViewPort() == false) {
return;
}
mZoomCenterX = mLastTouchX;
mZoomCenterY = mLastTouchY;
mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX);
mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY);
WebSettings settings = getSettings();
settings.setDoubleTapToastCount(0);
// remove the zoom control after double tap
dismissZoomControl();
ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY);
if (plugin != null) {
if (isPluginFitOnScreen(plugin)) {
mInZoomOverview = true;
// Force the titlebar fully reveal in overview mode
if (mScrollY < getTitleHeight()) mScrollY = 0;
zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth,
true);
} else {
mInZoomOverview = false;
centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height);
}
return;
}
boolean zoomToDefault = false;
if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS)
&& (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) {
setNewZoomScale(mActualScale, true, true);
float overviewScale = (float) getViewWidth() / mZoomOverviewWidth;
if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) {
mInZoomOverview = true;
}
} else if (!mInZoomOverview) {
float newScale = (float) getViewWidth() / mZoomOverviewWidth;
if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) {
mInZoomOverview = true;
// Force the titlebar fully reveal in overview mode
if (mScrollY < getTitleHeight()) mScrollY = 0;
zoomWithPreview(newScale, true);
} else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) {
zoomToDefault = true;
}
} else {
zoomToDefault = true;
}
if (zoomToDefault) {
mInZoomOverview = false;
int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale);
if (left != NO_LEFTEDGE) {
// add a 5pt padding to the left edge.
int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5))
- mScrollX;
// Re-calculate the zoom center so that the new scroll x will be
// on the left edge.
if (viewLeft > 0) {
mZoomCenterX = viewLeft * mDefaultScale
/ (mDefaultScale - mActualScale);
} else {
scrollBy(viewLeft, 0);
mZoomCenterX = 0;
}
}
zoomWithPreview(mDefaultScale, true);
}
}
// Called by JNI to handle a touch on a node representing an email address,
// address, or phone number
private void overrideLoading(String url) {
mCallbackProxy.uiOverrideUrlLoading(url);
}
@Override
public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
boolean result = false;
if (inEditingMode()) {
result = mWebTextView.requestFocus(direction,
previouslyFocusedRect);
} else {
result = super.requestFocus(direction, previouslyFocusedRect);
if (mWebViewCore.getSettings().getNeedInitialFocus()) {
// For cases such as GMail, where we gain focus from a direction,
// we want to move to the first available link.
// FIXME: If there are no visible links, we may not want to
int fakeKeyDirection = 0;
switch(direction) {
case View.FOCUS_UP:
fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP;
break;
case View.FOCUS_DOWN:
fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN;
break;
case View.FOCUS_LEFT:
fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT;
break;
case View.FOCUS_RIGHT:
fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT;
break;
default:
return result;
}
if (mNativeClass != 0 && !nativeHasCursorNode()) {
navHandledKey(fakeKeyDirection, 1, true, 0);
}
}
}
return result;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int measuredHeight = heightSize;
int measuredWidth = widthSize;
// Grab the content size from WebViewCore.
int contentHeight = contentToViewDimension(mContentHeight);
int contentWidth = contentToViewDimension(mContentWidth);
// Log.d(LOGTAG, "------- measure " + heightMode);
if (heightMode != MeasureSpec.EXACTLY) {
mHeightCanMeasure = true;
measuredHeight = contentHeight;
if (heightMode == MeasureSpec.AT_MOST) {
// If we are larger than the AT_MOST height, then our height can
// no longer be measured and we should scroll internally.
if (measuredHeight > heightSize) {
measuredHeight = heightSize;
mHeightCanMeasure = false;
}
}
} else {
mHeightCanMeasure = false;
}
if (mNativeClass != 0) {
nativeSetHeightCanMeasure(mHeightCanMeasure);
}
// For the width, always use the given size unless unspecified.
if (widthMode == MeasureSpec.UNSPECIFIED) {
mWidthCanMeasure = true;
measuredWidth = contentWidth;
} else {
mWidthCanMeasure = false;
}
synchronized (this) {
setMeasuredDimension(measuredWidth, measuredHeight);
}
}
@Override
public boolean requestChildRectangleOnScreen(View child,
Rect rect,
boolean immediate) {
rect.offset(child.getLeft() - child.getScrollX(),
child.getTop() - child.getScrollY());
Rect content = new Rect(viewToContentX(mScrollX),
viewToContentY(mScrollY),
viewToContentX(mScrollX + getWidth()
- getVerticalScrollbarWidth()),
viewToContentY(mScrollY + getViewHeightWithTitle()));
content = nativeSubtractLayers(content);
int screenTop = contentToViewY(content.top);
int screenBottom = contentToViewY(content.bottom);
int height = screenBottom - screenTop;
int scrollYDelta = 0;
if (rect.bottom > screenBottom) {
int oneThirdOfScreenHeight = height / 3;
if (rect.height() > 2 * oneThirdOfScreenHeight) {
// If the rectangle is too tall to fit in the bottom two thirds
// of the screen, place it at the top.
scrollYDelta = rect.top - screenTop;
} else {
// If the rectangle will still fit on screen, we want its
// top to be in the top third of the screen.
scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight);
}
} else if (rect.top < screenTop) {
scrollYDelta = rect.top - screenTop;
}
int screenLeft = contentToViewX(content.left);
int screenRight = contentToViewX(content.right);
int width = screenRight - screenLeft;
int scrollXDelta = 0;
if (rect.right > screenRight && rect.left > screenLeft) {
if (rect.width() > width) {
scrollXDelta += (rect.left - screenLeft);
} else {
scrollXDelta += (rect.right - screenRight);
}
} else if (rect.left < screenLeft) {
scrollXDelta -= (screenLeft - rect.left);
}
if ((scrollYDelta | scrollXDelta) != 0) {
return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0);
}
return false;
}
/* package */ void replaceTextfieldText(int oldStart, int oldEnd,
String replace, int newStart, int newEnd) {
WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData();
arg.mReplace = replace;
arg.mNewStart = newStart;
arg.mNewEnd = newEnd;
mTextGeneration++;
arg.mTextGeneration = mTextGeneration;
mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg);
}
/* package */ void passToJavaScript(String currentText, KeyEvent event) {
WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData();
arg.mEvent = event;
arg.mCurrentText = currentText;
// Increase our text generation number, and pass it to webcore thread
mTextGeneration++;
mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg);
// WebKit's document state is not saved until about to leave the page.
// To make sure the host application, like Browser, has the up to date
// document state when it goes to background, we force to save the
// document state.
mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE);
mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE,
cursorData(), 1000);
}
/* package */ synchronized WebViewCore getWebViewCore() {
return mWebViewCore;
}
//-------------------------------------------------------------------------
// Methods can be called from a separate thread, like WebViewCore
// If it needs to call the View system, it has to send message.
//-------------------------------------------------------------------------
/**
* General handler to receive message coming from webkit thread
*/
class PrivateHandler extends Handler {
@Override
public void handleMessage(Message msg) {
// exclude INVAL_RECT_MSG_ID since it is frequently output
if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) {
if (msg.what >= FIRST_PRIVATE_MSG_ID
&& msg.what <= LAST_PRIVATE_MSG_ID) {
Log.v(LOGTAG, HandlerPrivateDebugString[msg.what
- FIRST_PRIVATE_MSG_ID]);
} else if (msg.what >= FIRST_PACKAGE_MSG_ID
&& msg.what <= LAST_PACKAGE_MSG_ID) {
Log.v(LOGTAG, HandlerPackageDebugString[msg.what
- FIRST_PACKAGE_MSG_ID]);
} else {
Log.v(LOGTAG, Integer.toString(msg.what));
}
}
if (mWebViewCore == null) {
// after WebView's destroy() is called, skip handling messages.
return;
}
switch (msg.what) {
case REMEMBER_PASSWORD: {
mDatabase.setUsernamePassword(
msg.getData().getString("host"),
msg.getData().getString("username"),
msg.getData().getString("password"));
((Message) msg.obj).sendToTarget();
break;
}
case NEVER_REMEMBER_PASSWORD: {
mDatabase.setUsernamePassword(
msg.getData().getString("host"), null, null);
((Message) msg.obj).sendToTarget();
break;
}
case PREVENT_DEFAULT_TIMEOUT: {
// if timeout happens, cancel it so that it won't block UI
// to continue handling touch events
if ((msg.arg1 == MotionEvent.ACTION_DOWN
&& mPreventDefault == PREVENT_DEFAULT_MAYBE_YES)
|| (msg.arg1 == MotionEvent.ACTION_MOVE
&& mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) {
cancelWebCoreTouchEvent(
viewToContentX((int) mLastTouchX + mScrollX),
viewToContentY((int) mLastTouchY + mScrollY),
true);
}
break;
}
case SWITCH_TO_SHORTPRESS: {
if (mTouchMode == TOUCH_INIT_MODE) {
if (mPreventDefault != PREVENT_DEFAULT_YES) {
mTouchMode = TOUCH_SHORTPRESS_START_MODE;
updateSelection();
} else {
// set to TOUCH_SHORTPRESS_MODE so that it won't
// trigger double tap any more
mTouchMode = TOUCH_SHORTPRESS_MODE;
}
} else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) {
mTouchMode = TOUCH_DONE_MODE;
}
break;
}
case SWITCH_TO_LONGPRESS: {
if (inFullScreenMode() || mDeferTouchProcess) {
TouchEventData ted = new TouchEventData();
ted.mAction = WebViewCore.ACTION_LONGPRESS;
ted.mX = viewToContentX((int) mLastTouchX + mScrollX);
ted.mY = viewToContentY((int) mLastTouchY + mScrollY);
// metaState for long press is tricky. Should it be the
// state when the press started or when the press was
// released? Or some intermediary key state? For
// simplicity for now, we don't set it.
ted.mMetaState = 0;
ted.mReprocess = mDeferTouchProcess;
if (mDeferTouchProcess) {
ted.mViewX = mLastTouchX;
ted.mViewY = mLastTouchY;
}
mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
} else if (mPreventDefault != PREVENT_DEFAULT_YES) {
mTouchMode = TOUCH_DONE_MODE;
performLongClick();
rebuildWebTextView();
}
break;
}
case RELEASE_SINGLE_TAP: {
doShortPress();
break;
}
case SCROLL_BY_MSG_ID:
setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj);
break;
case SYNC_SCROLL_TO_MSG_ID:
if (mUserScroll) {
// if user has scrolled explicitly, don't sync the
// scroll position any more
mUserScroll = false;
break;
}
// fall through
case SCROLL_TO_MSG_ID:
if (setContentScrollTo(msg.arg1, msg.arg2)) {
// if we can't scroll to the exact position due to pin,
// send a message to WebCore to re-scroll when we get a
// new picture
mUserScroll = false;
mWebViewCore.sendMessage(EventHub.SYNC_SCROLL,
msg.arg1, msg.arg2);
}
break;
case SPAWN_SCROLL_TO_MSG_ID:
spawnContentScrollTo(msg.arg1, msg.arg2);
break;
case UPDATE_ZOOM_RANGE: {
WebViewCore.RestoreState restoreState
= (WebViewCore.RestoreState) msg.obj;
// mScrollX contains the new minPrefWidth
updateZoomRange(restoreState, getViewWidth(),
restoreState.mScrollX, false);
break;
}
case NEW_PICTURE_MSG_ID: {
// If we've previously delayed deleting a root
// layer, do it now.
if (mDelayedDeleteRootLayer) {
mDelayedDeleteRootLayer = false;
nativeSetRootLayer(0);
}
WebSettings settings = mWebViewCore.getSettings();
// called for new content
final int viewWidth = getViewWidth();
final WebViewCore.DrawData draw =
(WebViewCore.DrawData) msg.obj;
final Point viewSize = draw.mViewPoint;
boolean useWideViewport = settings.getUseWideViewPort();
WebViewCore.RestoreState restoreState = draw.mRestoreState;
boolean hasRestoreState = restoreState != null;
if (hasRestoreState) {
updateZoomRange(restoreState, viewSize.x,
draw.mMinPrefWidth, true);
if (!mDrawHistory) {
mInZoomOverview = false;
if (mInitialScaleInPercent > 0) {
setNewZoomScale(mInitialScaleInPercent / 100.0f,
mInitialScaleInPercent != mTextWrapScale * 100,
false);
} else if (restoreState.mViewScale > 0) {
mTextWrapScale = restoreState.mTextWrapScale;
setNewZoomScale(restoreState.mViewScale, false,
false);
} else {
mInZoomOverview = useWideViewport
&& settings.getLoadWithOverviewMode();
float scale;
if (mInZoomOverview) {
scale = (float) viewWidth
/ DEFAULT_VIEWPORT_WIDTH;
} else {
scale = restoreState.mTextWrapScale;
}
setNewZoomScale(scale, Math.abs(scale
- mTextWrapScale) >= MINIMUM_SCALE_INCREMENT,
false);
}
setContentScrollTo(restoreState.mScrollX,
restoreState.mScrollY);
// As we are on a new page, remove the WebTextView. This
// is necessary for page loads driven by webkit, and in
// particular when the user was on a password field, so
// the WebTextView was visible.
clearTextEntry(false);
// update the zoom buttons as the scale can be changed
if (getSettings().getBuiltInZoomControls()) {
updateZoomButtonsEnabled();
}
}
}
// We update the layout (i.e. request a layout from the
// view system) if the last view size that we sent to
// WebCore matches the view size of the picture we just
// received in the fixed dimension.
final boolean updateLayout = viewSize.x == mLastWidthSent
&& viewSize.y == mLastHeightSent;
recordNewContentSize(draw.mWidthHeight.x,
draw.mWidthHeight.y
+ (mFindIsUp ? mFindHeight : 0), updateLayout);
if (DebugFlags.WEB_VIEW) {
Rect b = draw.mInvalRegion.getBounds();
Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" +
b.left+","+b.top+","+b.right+","+b.bottom+"}");
}
invalidateContentRect(draw.mInvalRegion.getBounds());
if (mPictureListener != null) {
mPictureListener.onNewPicture(WebView.this, capturePicture());
}
if (useWideViewport) {
// limit mZoomOverviewWidth upper bound to
// sMaxViewportWidth so that if the page doesn't behave
// well, the WebView won't go insane. limit the lower
// bound to match the default scale for mobile sites.
mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math
.max((int) (viewWidth / mDefaultScale), Math
.max(draw.mMinPrefWidth,
draw.mViewPoint.x)));
}
if (!mMinZoomScaleFixed) {
mMinZoomScale = (float) viewWidth / mZoomOverviewWidth;
}
if (!mDrawHistory && mInZoomOverview) {
// fit the content width to the current view. Ignore
// the rounding error case.
if (Math.abs((viewWidth * mInvActualScale)
- mZoomOverviewWidth) > 1) {
setNewZoomScale((float) viewWidth
/ mZoomOverviewWidth, Math.abs(mActualScale
- mTextWrapScale) < MINIMUM_SCALE_INCREMENT,
false);
}
}
if (draw.mFocusSizeChanged && inEditingMode()) {
mFocusSizeChanged = true;
}
if (hasRestoreState) {
mViewManager.postReadyToDrawAll();
}
break;
}
case WEBCORE_INITIALIZED_MSG_ID:
// nativeCreate sets mNativeClass to a non-zero value
nativeCreate(msg.arg1);
break;
case UPDATE_TEXTFIELD_TEXT_MSG_ID:
// Make sure that the textfield is currently focused
// and representing the same node as the pointer.
if (inEditingMode() &&
mWebTextView.isSameTextField(msg.arg1)) {
if (msg.getData().getBoolean("password")) {
Spannable text = (Spannable) mWebTextView.getText();
int start = Selection.getSelectionStart(text);
int end = Selection.getSelectionEnd(text);
mWebTextView.setInPassword(true);
// Restore the selection, which may have been
// ruined by setInPassword.
Spannable pword =
(Spannable) mWebTextView.getText();
Selection.setSelection(pword, start, end);
// If the text entry has created more events, ignore
// this one.
} else if (msg.arg2 == mTextGeneration) {
mWebTextView.setTextAndKeepSelection(
(String) msg.obj);
}
}
break;
case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID:
displaySoftKeyboard(true);
updateTextSelectionFromMessage(msg.arg1, msg.arg2,
(WebViewCore.TextSelectionData) msg.obj);
break;
case UPDATE_TEXT_SELECTION_MSG_ID:
// If no textfield was in focus, and the user touched one,
// causing it to send this message, then WebTextView has not
// been set up yet. Rebuild it so it can set its selection.
rebuildWebTextView();
updateTextSelectionFromMessage(msg.arg1, msg.arg2,
(WebViewCore.TextSelectionData) msg.obj);
break;
case RETURN_LABEL:
if (inEditingMode()
&& mWebTextView.isSameTextField(msg.arg1)) {
mWebTextView.setHint((String) msg.obj);
InputMethodManager imm
= InputMethodManager.peekInstance();
// The hint is propagated to the IME in
// onCreateInputConnection. If the IME is already
// active, restart it so that its hint text is updated.
if (imm != null && imm.isActive(mWebTextView)) {
imm.restartInput(mWebTextView);
}
}
break;
case MOVE_OUT_OF_PLUGIN:
navHandledKey(msg.arg1, 1, false, 0);
break;
case UPDATE_TEXT_ENTRY_MSG_ID:
// this is sent after finishing resize in WebViewCore. Make
// sure the text edit box is still on the screen.
if (inEditingMode() && nativeCursorIsTextInput()) {
mWebTextView.bringIntoView();
rebuildWebTextView();
}
break;
case CLEAR_TEXT_ENTRY:
clearTextEntry(false);
break;
case INVAL_RECT_MSG_ID: {
Rect r = (Rect)msg.obj;
if (r == null) {
invalidate();
} else {
// we need to scale r from content into view coords,
// which viewInvalidate() does for us
viewInvalidate(r.left, r.top, r.right, r.bottom);
}
break;
}
case IMMEDIATE_REPAINT_MSG_ID: {
invalidate();
break;
}
case SET_ROOT_LAYER_MSG_ID: {
if (0 == msg.arg1) {
// Null indicates deleting the old layer, but
// don't actually do so until we've got the
// new page to display.
mDelayedDeleteRootLayer = true;
} else {
mDelayedDeleteRootLayer = false;
nativeSetRootLayer(msg.arg1);
invalidate();
}
break;
}
case REQUEST_FORM_DATA:
AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj;
if (mWebTextView.isSameTextField(msg.arg1)) {
mWebTextView.setAdapterCustom(adapter);
}
break;
case RESUME_WEBCORE_PRIORITY:
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
break;
case LONG_PRESS_CENTER:
// as this is shared by keydown and trackballdown, reset all
// the states
mGotCenterDown = false;
mTrackballDown = false;
performLongClick();
break;
case WEBCORE_NEED_TOUCH_EVENTS:
mForwardTouchEvents = (msg.arg1 != 0);
break;
case PREVENT_TOUCH_ID:
if (inFullScreenMode()) {
break;
}
if (msg.obj == null) {
if (msg.arg1 == MotionEvent.ACTION_DOWN
&& mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) {
// if prevent default is called from WebCore, UI
// will not handle the rest of the touch events any
// more.
mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES
: PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN;
} else if (msg.arg1 == MotionEvent.ACTION_MOVE
&& mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) {
// the return for the first ACTION_MOVE will decide
// whether UI will handle touch or not. Currently no
// support for alternating prevent default
mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES
: PREVENT_DEFAULT_NO;
}
} else if (msg.arg2 == 0) {
// prevent default is not called in WebCore, so the
// message needs to be reprocessed in UI
TouchEventData ted = (TouchEventData) msg.obj;
switch (ted.mAction) {
case MotionEvent.ACTION_DOWN:
mLastDeferTouchX = ted.mViewX;
mLastDeferTouchY = ted.mViewY;
mDeferTouchMode = TOUCH_INIT_MODE;
break;
case MotionEvent.ACTION_MOVE: {
// no snapping in defer process
if (mDeferTouchMode != TOUCH_DRAG_MODE) {
mDeferTouchMode = TOUCH_DRAG_MODE;
mLastDeferTouchX = ted.mViewX;
mLastDeferTouchY = ted.mViewY;
startDrag();
}
int deltaX = pinLocX((int) (mScrollX
+ mLastDeferTouchX - ted.mViewX))
- mScrollX;
int deltaY = pinLocY((int) (mScrollY
+ mLastDeferTouchY - ted.mViewY))
- mScrollY;
doDrag(deltaX, deltaY);
if (deltaX != 0) mLastDeferTouchX = ted.mViewX;
if (deltaY != 0) mLastDeferTouchY = ted.mViewY;
break;
}
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
if (mDeferTouchMode == TOUCH_DRAG_MODE) {
// no fling in defer process
WebViewCore.resumePriority();
WebViewCore.resumeUpdatePicture(mWebViewCore);
}
mDeferTouchMode = TOUCH_DONE_MODE;
break;
case WebViewCore.ACTION_DOUBLETAP:
// doDoubleTap() needs mLastTouchX/Y as anchor
mLastTouchX = ted.mViewX;
mLastTouchY = ted.mViewY;
doDoubleTap();
mDeferTouchMode = TOUCH_DONE_MODE;
break;
case WebViewCore.ACTION_LONGPRESS:
HitTestResult hitTest = getHitTestResult();
if (hitTest != null && hitTest.mType
!= HitTestResult.UNKNOWN_TYPE) {
performLongClick();
rebuildWebTextView();
}
mDeferTouchMode = TOUCH_DONE_MODE;
break;
}
}
break;
case REQUEST_KEYBOARD:
if (msg.arg1 == 0) {
hideSoftKeyboard();
} else {
displaySoftKeyboard(false);
}
break;
case FIND_AGAIN:
// Ignore if find has been dismissed.
if (mFindIsUp) {
findAll(mLastFind);
}
break;
case DRAG_HELD_MOTIONLESS:
mHeldMotionless = MOTIONLESS_TRUE;
invalidate();
// fall through to keep scrollbars awake
case AWAKEN_SCROLL_BARS:
if (mTouchMode == TOUCH_DRAG_MODE
&& mHeldMotionless == MOTIONLESS_TRUE) {
awakenScrollBars(ViewConfiguration
.getScrollDefaultDelay(), false);
mPrivateHandler.sendMessageDelayed(mPrivateHandler
.obtainMessage(AWAKEN_SCROLL_BARS),
ViewConfiguration.getScrollDefaultDelay());
}
break;
case DO_MOTION_UP:
doMotionUp(msg.arg1, msg.arg2);
break;
case SHOW_FULLSCREEN: {
View view = (View) msg.obj;
int npp = msg.arg1;
if (mFullScreenHolder != null) {
Log.w(LOGTAG, "Should not have another full screen.");
mFullScreenHolder.dismiss();
}
mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp);
mFullScreenHolder.setContentView(view);
mFullScreenHolder.setCancelable(false);
mFullScreenHolder.setCanceledOnTouchOutside(false);
mFullScreenHolder.show();
break;
}
case HIDE_FULLSCREEN:
if (inFullScreenMode()) {
mFullScreenHolder.dismiss();
mFullScreenHolder = null;
}
break;
case DOM_FOCUS_CHANGED:
if (inEditingMode()) {
nativeClearCursor();
rebuildWebTextView();
}
break;
case SHOW_RECT_MSG_ID: {
WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj;
int x = mScrollX;
int left = contentToViewX(data.mLeft);
int width = contentToViewDimension(data.mWidth);
int maxWidth = contentToViewDimension(data.mContentWidth);
int viewWidth = getViewWidth();
if (width < viewWidth) {
// center align
x += left + width / 2 - mScrollX - viewWidth / 2;
} else {
x += (int) (left + data.mXPercentInDoc * width
- mScrollX - data.mXPercentInView * viewWidth);
}
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" +
width + ",maxWidth=" + maxWidth +
",viewWidth=" + viewWidth + ",x="
+ x + ",xPercentInDoc=" + data.mXPercentInDoc +
",xPercentInView=" + data.mXPercentInView+ ")");
}
// use the passing content width to cap x as the current
// mContentWidth may not be updated yet
x = Math.max(0,
(Math.min(maxWidth, x + viewWidth)) - viewWidth);
int top = contentToViewY(data.mTop);
int height = contentToViewDimension(data.mHeight);
int maxHeight = contentToViewDimension(data.mContentHeight);
int viewHeight = getViewHeight();
int y = (int) (top + data.mYPercentInDoc * height -
data.mYPercentInView * viewHeight);
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" +
height + ",maxHeight=" + maxHeight +
",viewHeight=" + viewHeight + ",y="
+ y + ",yPercentInDoc=" + data.mYPercentInDoc +
",yPercentInView=" + data.mYPercentInView+ ")");
}
// use the passing content height to cap y as the current
// mContentHeight may not be updated yet
y = Math.max(0,
(Math.min(maxHeight, y + viewHeight) - viewHeight));
// We need to take into account the visible title height
// when scrolling since y is an absolute view position.
y = Math.max(0, y - getVisibleTitleHeight());
scrollTo(x, y);
}
break;
case CENTER_FIT_RECT:
Rect r = (Rect)msg.obj;
mInZoomOverview = false;
centerFitRect(r.left, r.top, r.width(), r.height());
break;
case SET_SCROLLBAR_MODES:
mHorizontalScrollBarMode = msg.arg1;
mVerticalScrollBarMode = msg.arg2;
break;
default:
super.handleMessage(msg);
break;
}
}
}
/**
* Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID
* and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView.
*/
private void updateTextSelectionFromMessage(int nodePointer,
int textGeneration, WebViewCore.TextSelectionData data) {
if (inEditingMode()
&& mWebTextView.isSameTextField(nodePointer)
&& textGeneration == mTextGeneration) {
mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd);
}
}
// Class used to use a dropdown for a <select> element
private class InvokeListBox implements Runnable {
// Whether the listbox allows multiple selection.
private boolean mMultiple;
// Passed in to a list with multiple selection to tell
// which items are selected.
private int[] mSelectedArray;
// Passed in to a list with single selection to tell
// where the initial selection is.
private int mSelection;
private Container[] mContainers;
// Need these to provide stable ids to my ArrayAdapter,
// which normally does not have stable ids. (Bug 1250098)
private class Container extends Object {
/**
* Possible values for mEnabled. Keep in sync with OptionStatus in
* WebViewCore.cpp
*/
final static int OPTGROUP = -1;
final static int OPTION_DISABLED = 0;
final static int OPTION_ENABLED = 1;
String mString;
int mEnabled;
int mId;
public String toString() {
return mString;
}
}
/**
* Subclass ArrayAdapter so we can disable OptionGroupLabels,
* and allow filtering.
*/
private class MyArrayListAdapter extends ArrayAdapter<Container> {
public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) {
super(context,
multiple ? com.android.internal.R.layout.select_dialog_multichoice :
com.android.internal.R.layout.select_dialog_singlechoice,
objects);
}
@Override
public View getView(int position, View convertView,
ViewGroup parent) {
// Always pass in null so that we will get a new CheckedTextView
// Otherwise, an item which was previously used as an <optgroup>
// element (i.e. has no check), could get used as an <option>
// element, which needs a checkbox/radio, but it would not have
// one.
convertView = super.getView(position, null, parent);
Container c = item(position);
if (c != null && Container.OPTION_ENABLED != c.mEnabled) {
// ListView does not draw dividers between disabled and
// enabled elements. Use a LinearLayout to provide dividers
LinearLayout layout = new LinearLayout(mContext);
layout.setOrientation(LinearLayout.VERTICAL);
if (position > 0) {
View dividerTop = new View(mContext);
dividerTop.setBackgroundResource(
android.R.drawable.divider_horizontal_bright);
layout.addView(dividerTop);
}
if (Container.OPTGROUP == c.mEnabled) {
// Currently select_dialog_multichoice and
// select_dialog_singlechoice are CheckedTextViews. If
// that changes, the class cast will no longer be valid.
Assert.assertTrue(
convertView instanceof CheckedTextView);
((CheckedTextView) convertView).setCheckMarkDrawable(
null);
} else {
// c.mEnabled == Container.OPTION_DISABLED
// Draw the disabled element in a disabled state.
convertView.setEnabled(false);
}
layout.addView(convertView);
if (position < getCount() - 1) {
View dividerBottom = new View(mContext);
dividerBottom.setBackgroundResource(
android.R.drawable.divider_horizontal_bright);
layout.addView(dividerBottom);
}
return layout;
}
return convertView;
}
@Override
public boolean hasStableIds() {
// AdapterView's onChanged method uses this to determine whether
// to restore the old state. Return false so that the old (out
// of date) state does not replace the new, valid state.
return false;
}
private Container item(int position) {
if (position < 0 || position >= getCount()) {
return null;
}
return (Container) getItem(position);
}
@Override
public long getItemId(int position) {
Container item = item(position);
if (item == null) {
return -1;
}
return item.mId;
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public boolean isEnabled(int position) {
Container item = item(position);
if (item == null) {
return false;
}
return Container.OPTION_ENABLED == item.mEnabled;
}
}
private InvokeListBox(String[] array, int[] enabled, int[] selected) {
mMultiple = true;
mSelectedArray = selected;
int length = array.length;
mContainers = new Container[length];
for (int i = 0; i < length; i++) {
mContainers[i] = new Container();
mContainers[i].mString = array[i];
mContainers[i].mEnabled = enabled[i];
mContainers[i].mId = i;
}
}
private InvokeListBox(String[] array, int[] enabled, int selection) {
mSelection = selection;
mMultiple = false;
int length = array.length;
mContainers = new Container[length];
for (int i = 0; i < length; i++) {
mContainers[i] = new Container();
mContainers[i].mString = array[i];
mContainers[i].mEnabled = enabled[i];
mContainers[i].mId = i;
}
}
/*
* Whenever the data set changes due to filtering, this class ensures
* that the checked item remains checked.
*/
private class SingleDataSetObserver extends DataSetObserver {
private long mCheckedId;
private ListView mListView;
private Adapter mAdapter;
/*
* Create a new observer.
* @param id The ID of the item to keep checked.
* @param l ListView for getting and clearing the checked states
* @param a Adapter for getting the IDs
*/
public SingleDataSetObserver(long id, ListView l, Adapter a) {
mCheckedId = id;
mListView = l;
mAdapter = a;
}
public void onChanged() {
// The filter may have changed which item is checked. Find the
// item that the ListView thinks is checked.
int position = mListView.getCheckedItemPosition();
long id = mAdapter.getItemId(position);
if (mCheckedId != id) {
// Clear the ListView's idea of the checked item, since
// it is incorrect
mListView.clearChoices();
// Search for mCheckedId. If it is in the filtered list,
// mark it as checked
int count = mAdapter.getCount();
for (int i = 0; i < count; i++) {
if (mAdapter.getItemId(i) == mCheckedId) {
mListView.setItemChecked(i, true);
break;
}
}
}
}
public void onInvalidate() {}
}
public void run() {
final ListView listView = (ListView) LayoutInflater.from(mContext)
.inflate(com.android.internal.R.layout.select_dialog, null);
final MyArrayListAdapter adapter = new
MyArrayListAdapter(mContext, mContainers, mMultiple);
AlertDialog.Builder b = new AlertDialog.Builder(mContext)
.setView(listView).setCancelable(true)
.setInverseBackgroundForced(true);
if (mMultiple) {
b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mWebViewCore.sendMessage(
EventHub.LISTBOX_CHOICES,
adapter.getCount(), 0,
listView.getCheckedItemPositions());
}});
b.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mWebViewCore.sendMessage(
EventHub.SINGLE_LISTBOX_CHOICE, -2, 0);
}});
}
final AlertDialog dialog = b.create();
listView.setAdapter(adapter);
listView.setFocusableInTouchMode(true);
// There is a bug (1250103) where the checks in a ListView with
// multiple items selected are associated with the positions, not
// the ids, so the items do not properly retain their checks when
// filtered. Do not allow filtering on multiple lists until
// that bug is fixed.
listView.setTextFilterEnabled(!mMultiple);
if (mMultiple) {
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
int length = mSelectedArray.length;
for (int i = 0; i < length; i++) {
listView.setItemChecked(mSelectedArray[i], true);
}
} else {
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v,
int position, long id) {
mWebViewCore.sendMessage(
EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0);
dialog.dismiss();
}
});
if (mSelection != -1) {
listView.setSelection(mSelection);
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
listView.setItemChecked(mSelection, true);
DataSetObserver observer = new SingleDataSetObserver(
adapter.getItemId(mSelection), listView, adapter);
adapter.registerDataSetObserver(observer);
}
}
dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface dialog) {
mWebViewCore.sendMessage(
EventHub.SINGLE_LISTBOX_CHOICE, -2, 0);
}
});
dialog.show();
}
}
/*
* Request a dropdown menu for a listbox with multiple selection.
*
* @param array Labels for the listbox.
* @param enabledArray State for each element in the list. See static
* integers in Container class.
* @param selectedArray Which positions are initally selected.
*/
void requestListBox(String[] array, int[] enabledArray, int[]
selectedArray) {
mPrivateHandler.post(
new InvokeListBox(array, enabledArray, selectedArray));
}
private void updateZoomRange(WebViewCore.RestoreState restoreState,
int viewWidth, int minPrefWidth, boolean updateZoomOverview) {
if (restoreState.mMinScale == 0) {
if (restoreState.mMobileSite) {
if (minPrefWidth > Math.max(0, viewWidth)) {
mMinZoomScale = (float) viewWidth / minPrefWidth;
mMinZoomScaleFixed = false;
if (updateZoomOverview) {
WebSettings settings = getSettings();
mInZoomOverview = settings.getUseWideViewPort() &&
settings.getLoadWithOverviewMode();
}
} else {
mMinZoomScale = restoreState.mDefaultScale;
mMinZoomScaleFixed = true;
}
} else {
mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE;
mMinZoomScaleFixed = false;
}
} else {
mMinZoomScale = restoreState.mMinScale;
mMinZoomScaleFixed = true;
}
if (restoreState.mMaxScale == 0) {
mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE;
} else {
mMaxZoomScale = restoreState.mMaxScale;
}
}
/*
* Request a dropdown menu for a listbox with single selection or a single
* <select> element.
*
* @param array Labels for the listbox.
* @param enabledArray State for each element in the list. See static
* integers in Container class.
* @param selection Which position is initally selected.
*/
void requestListBox(String[] array, int[] enabledArray, int selection) {
mPrivateHandler.post(
new InvokeListBox(array, enabledArray, selection));
}
// called by JNI
private void sendMoveFocus(int frame, int node) {
mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS,
new WebViewCore.CursorData(frame, node, 0, 0));
}
// called by JNI
private void sendMoveMouse(int frame, int node, int x, int y) {
mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE,
new WebViewCore.CursorData(frame, node, x, y));
}
/*
* Send a mouse move event to the webcore thread.
*
* @param removeFocus Pass true if the "mouse" cursor is now over a node
* which wants key events, but it is not the focus. This
* will make the visual appear as though nothing is in
* focus. Remove the WebTextView, if present, and stop
* drawing the blinking caret.
* called by JNI
*/
private void sendMoveMouseIfLatest(boolean removeFocus) {
if (removeFocus) {
clearTextEntry(true);
}
mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST,
cursorData());
}
// called by JNI
private void sendMotionUp(int touchGeneration,
int frame, int node, int x, int y) {
WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData();
touchUpData.mMoveGeneration = touchGeneration;
touchUpData.mFrame = frame;
touchUpData.mNode = node;
touchUpData.mX = x;
touchUpData.mY = y;
mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData);
}
private int getScaledMaxXScroll() {
int width;
if (mHeightCanMeasure == false) {
width = getViewWidth() / 4;
} else {
Rect visRect = new Rect();
calcOurVisibleRect(visRect);
width = visRect.width() / 2;
}
// FIXME the divisor should be retrieved from somewhere
return viewToContentX(width);
}
private int getScaledMaxYScroll() {
int height;
if (mHeightCanMeasure == false) {
height = getViewHeight() / 4;
} else {
Rect visRect = new Rect();
calcOurVisibleRect(visRect);
height = visRect.height() / 2;
}
// FIXME the divisor should be retrieved from somewhere
// the closest thing today is hard-coded into ScrollView.java
// (from ScrollView.java, line 363) int maxJump = height/2;
return Math.round(height * mInvActualScale);
}
/**
* Called by JNI to invalidate view
*/
private void viewInvalidate() {
invalidate();
}
/**
* Pass the key to the plugin. This assumes that nativeFocusIsPlugin()
* returned true.
*/
private void letPluginHandleNavKey(int keyCode, long time, boolean down) {
int keyEventAction;
int eventHubAction;
if (down) {
keyEventAction = KeyEvent.ACTION_DOWN;
eventHubAction = EventHub.KEY_DOWN;
playSoundEffect(keyCodeToSoundsEffect(keyCode));
} else {
keyEventAction = KeyEvent.ACTION_UP;
eventHubAction = EventHub.KEY_UP;
}
KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode,
1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0)
| (false ? KeyEvent.META_ALT_ON : 0) // FIXME
| (false ? KeyEvent.META_SYM_ON : 0) // FIXME
, 0, 0, 0);
mWebViewCore.sendMessage(eventHubAction, event);
}
// return true if the key was handled
private boolean navHandledKey(int keyCode, int count, boolean noScroll,
long time) {
if (mNativeClass == 0) {
return false;
}
mLastCursorTime = time;
mLastCursorBounds = nativeGetCursorRingBounds();
boolean keyHandled
= nativeMoveCursor(keyCode, count, noScroll) == false;
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds
+ " mLastCursorTime=" + mLastCursorTime
+ " handled=" + keyHandled);
}
if (keyHandled == false || mHeightCanMeasure == false) {
return keyHandled;
}
Rect contentCursorRingBounds = nativeGetCursorRingBounds();
if (contentCursorRingBounds.isEmpty()) return keyHandled;
Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds);
Rect visRect = new Rect();
calcOurVisibleRect(visRect);
Rect outset = new Rect(visRect);
int maxXScroll = visRect.width() / 2;
int maxYScroll = visRect.height() / 2;
outset.inset(-maxXScroll, -maxYScroll);
if (Rect.intersects(outset, viewCursorRingBounds) == false) {
return keyHandled;
}
// FIXME: Necessary because ScrollView/ListView do not scroll left/right
int maxH = Math.min(viewCursorRingBounds.right - visRect.right,
maxXScroll);
if (maxH > 0) {
pinScrollBy(maxH, 0, true, 0);
} else {
maxH = Math.max(viewCursorRingBounds.left - visRect.left,
-maxXScroll);
if (maxH < 0) {
pinScrollBy(maxH, 0, true, 0);
}
}
if (mLastCursorBounds.isEmpty()) return keyHandled;
if (mLastCursorBounds.equals(contentCursorRingBounds)) {
return keyHandled;
}
if (DebugFlags.WEB_VIEW) {
Log.v(LOGTAG, "navHandledKey contentCursorRingBounds="
+ contentCursorRingBounds);
}
requestRectangleOnScreen(viewCursorRingBounds);
mUserScroll = true;
return keyHandled;
}
/**
* Set the background color. It's white by default. Pass
* zero to make the view transparent.
* @param color the ARGB color described by Color.java
*/
public void setBackgroundColor(int color) {
mBackgroundColor = color;
mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color);
}
public void debugDump() {
nativeDebugDump();
mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE);
}
/**
* Draw the HTML page into the specified canvas. This call ignores any
* view-specific zoom, scroll offset, or other changes. It does not draw
* any view-specific chrome, such as progress or URL bars.
*
* @hide only needs to be accessible to Browser and testing
*/
public void drawPage(Canvas canvas) {
mWebViewCore.drawContentPicture(canvas, 0, false, false);
}
/**
* Set the time to wait between passing touches to WebCore. See also the
* TOUCH_SENT_INTERVAL member for further discussion.
*
* @hide This is only used by the DRT test application.
*/
public void setTouchInterval(int interval) {
mCurrentTouchInterval = interval;
}
/**
* Update our cache with updatedText.
* @param updatedText The new text to put in our cache.
*/
/* package */ void updateCachedTextfield(String updatedText) {
// Also place our generation number so that when we look at the cache
// we recognize that it is up to date.
nativeUpdateCachedTextfield(updatedText, mTextGeneration);
}
private native int nativeCacheHitFramePointer();
private native Rect nativeCacheHitNodeBounds();
private native int nativeCacheHitNodePointer();
/* package */ native void nativeClearCursor();
private native void nativeCreate(int ptr);
private native int nativeCursorFramePointer();
private native Rect nativeCursorNodeBounds();
private native int nativeCursorNodePointer();
/* package */ native boolean nativeCursorMatchesFocus();
private native boolean nativeCursorIntersects(Rect visibleRect);
private native boolean nativeCursorIsAnchor();
private native boolean nativeCursorIsTextInput();
private native Point nativeCursorPosition();
private native String nativeCursorText();
/**
* Returns true if the native cursor node says it wants to handle key events
* (ala plugins). This can only be called if mNativeClass is non-zero!
*/
private native boolean nativeCursorWantsKeyEvents();
private native void nativeDebugDump();
private native void nativeDestroy();
private native boolean nativeEvaluateLayersAnimations();
private native void nativeDrawExtras(Canvas canvas, int extra);
private native void nativeDumpDisplayTree(String urlOrNull);
private native int nativeFindAll(String findLower, String findUpper);
private native void nativeFindNext(boolean forward);
/* package */ native int nativeFocusCandidateFramePointer();
/* package */ native boolean nativeFocusCandidateHasNextTextfield();
/* package */ native boolean nativeFocusCandidateIsPassword();
private native boolean nativeFocusCandidateIsRtlText();
private native boolean nativeFocusCandidateIsTextInput();
/* package */ native int nativeFocusCandidateMaxLength();
/* package */ native String nativeFocusCandidateName();
private native Rect nativeFocusCandidateNodeBounds();
/* package */ native int nativeFocusCandidatePointer();
private native String nativeFocusCandidateText();
private native int nativeFocusCandidateTextSize();
/**
* Returns an integer corresponding to WebView.cpp::type.
* See WebTextView.setType()
*/
private native int nativeFocusCandidateType();
private native boolean nativeFocusIsPlugin();
private native Rect nativeFocusNodeBounds();
/* package */ native int nativeFocusNodePointer();
private native Rect nativeGetCursorRingBounds();
private native String nativeGetSelection();
private native boolean nativeHasCursorNode();
private native boolean nativeHasFocusNode();
private native void nativeHideCursor();
private native String nativeImageURI(int x, int y);
private native void nativeInstrumentReport();
/* package */ native boolean nativeMoveCursorToNextTextInput();
// return true if the page has been scrolled
private native boolean nativeMotionUp(int x, int y, int slop);
// returns false if it handled the key
private native boolean nativeMoveCursor(int keyCode, int count,
boolean noScroll);
private native int nativeMoveGeneration();
private native void nativeMoveSelection(int x, int y,
boolean extendSelection);
private native boolean nativePointInNavCache(int x, int y, int slop);
// Like many other of our native methods, you must make sure that
// mNativeClass is not null before calling this method.
private native void nativeRecordButtons(boolean focused,
boolean pressed, boolean invalidate);
private native void nativeSelectBestAt(Rect rect);
private native void nativeSetFindIsEmpty();
private native void nativeSetFindIsUp(boolean isUp);
private native void nativeSetFollowedLink(boolean followed);
private native void nativeSetHeightCanMeasure(boolean measure);
private native void nativeSetRootLayer(int layer);
private native void nativeSetSelectionPointer(boolean set,
float scale, int x, int y, boolean extendSelection);
private native void nativeSetSelectionRegion(boolean set);
private native Rect nativeSubtractLayers(Rect content);
private native int nativeTextGeneration();
// Never call this version except by updateCachedTextfield(String) -
// we always want to pass in our generation number.
private native void nativeUpdateCachedTextfield(String updatedText,
int generation);
// return NO_LEFTEDGE means failure.
private static final int NO_LEFTEDGE = -1;
private native int nativeGetBlockLeftEdge(int x, int y, float scale);
}