Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / frameworks / base / a9dd820184ee4d083bd9b2af735dcf50b78fc6cd / . / core / java / android / webkit / WebView.java
blob: dd373de6cf6fcc26211bb7f1572eb770e8e24079 [file] [log] [blame]
/*
* 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.content.Context;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Picture;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.net.http.SslCertificate;
import android.os.Bundle;
import android.os.Looper;
import android.os.Message;
import android.os.StrictMode;
import android.util.AttributeSet;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewTreeObserver;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.widget.AbsoluteLayout;
import java.io.File;
import java.util.Map;
/**
* <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>&lt;uses-permission android:name="android.permission.INTERNET" /></pre>
*
* <p>This must be a child of the <a
* href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a>
* element.</p>
*
* <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View
* tutorial</a>.</p>
*
* <h3>Basic usage</h3>
*
* <p>By default, a WebView provides no browser-like widgets, does not
* enable JavaScript and web page errors are ignored. If your goal is only
* to display some HTML as a part of your UI, this is probably fine;
* the user won't need to interact with the web page beyond reading
* it, and the web page won't need to interact with the user. If you
* actually want a full-blown web browser, then you probably want to
* invoke the Browser application with a URL Intent rather than show it
* with a WebView. For example:
* <pre>
* Uri uri = Uri.parse("http://www.example.com");
* Intent intent = new Intent(Intent.ACTION_VIEW, uri);
* startActivity(intent);
* </pre>
* <p>See {@link android.content.Intent} for more information.</p>
*
* <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout,
* or set the entire Activity window as a WebView during {@link
* android.app.Activity#onCreate(Bundle) onCreate()}:</p>
* <pre class="prettyprint">
* WebView webview = new WebView(this);
* setContentView(webview);
* </pre>
*
* <p>Then load the desired web page:</p>
* <pre>
* // Simplest usage: note that an exception will NOT be thrown
* // if there is an error loading this page (see below).
* webview.loadUrl("http://slashdot.org/");
*
* // OR, you can also load from an HTML string:
* String summary = "&lt;html>&lt;body>You scored &lt;b>192&lt;/b> points.&lt;/body>&lt;/html>";
* webview.loadData(summary, "text/html", null);
* // ... although note that there are restrictions on what this HTML can do.
* // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link
* #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info.
* </pre>
*
* <p>A WebView has several customization points where you can add your
* own behavior. These are:</p>
*
* <ul>
* <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass.
* This class is called when something that might impact a
* browser UI happens, for instance, progress updates and
* JavaScript alerts are sent here (see <a
* href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>).
* </li>
* <li>Creating and setting a {@link android.webkit.WebViewClient} subclass.
* It will be called when things happen that impact the
* rendering of the content, eg, errors or form submissions. You
* can also intercept URL loading here (via {@link
* android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String)
* shouldOverrideUrlLoading()}).</li>
* <li>Modifying the {@link android.webkit.WebSettings}, such as
* enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean)
* setJavaScriptEnabled()}. </li>
* <li>Injecting Java objects into the WebView using the
* {@link android.webkit.WebView#addJavascriptInterface} method. This
* method allows you to inject Java objects into a page's JavaScript
* context, so that they can be accessed by JavaScript in the page.</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.&mdash;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 &mdash; sometimes significantly more &mdash; 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>
* &lt;link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /&gt;</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>&lt;meta name="viewport" content="target-densitydpi=device-dpi" /&gt;</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>
*
* <h3>HTML5 Video support</h3>
*
* <p>In order to support inline HTML5 video in your application, you need to have hardware
* acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support,
* implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)}
* and {@link WebChromeClient#onHideCustomView()} are required,
* {@link WebChromeClient#getVideoLoadingProgressView()} is optional.
* </p>
*
*
*/
/*
* Implementation notes.
* The WebView is a thin API class that delegates its public API to a backend WebViewProvider
* class instance. WebView extends {@link AbsoluteLayout} for backward compatibility reasons.
* Methods are delegated to the provider implementation: all public API methods introduced in this
* file are fully delegated, whereas public and protected methods from the View base classes are
* only delegated where a specific need exists for them to do so.
*/
@Widget
public class WebView extends AbsoluteLayout
implements ViewTreeObserver.OnGlobalFocusChangeListener,
ViewGroup.OnHierarchyChangeListener {
// Default Provider factory class name.
private static final String DEFAULT_WEB_VIEW_FACTORY = "android.webkit.WebViewClassic$Factory";
private static final String LOGTAG = "webview_proxy";
// TODO: flip DEBUG to always be disabled.
private static final boolean DEBUG = true;
/**
* 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;
}
}
/**
* 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=";
/**
* Interface to listen for new pictures as they change.
* @deprecated This interface is now obsolete.
*/
@Deprecated
public interface PictureListener {
/**
* Notify the listener that the picture has changed.
* @param view The WebView that owns the picture.
* @param picture The new picture.
* @deprecated Due to internal changes, the picture does not include
* composited layers such as fixed position elements or scrollable divs.
* While the PictureListener API can still be used to detect changes in
* the WebView content, you are advised against its usage until a replacement
* is provided in a future Android release
*/
@Deprecated
public void onNewPicture(WebView view, Picture picture);
}
public static class HitTestResult {
/**
* Default HitTestResult, where the target is unknown
*/
public static final int UNKNOWN_TYPE = 0;
/**
* @deprecated This type is no longer used.
*/
@Deprecated
public static final int ANCHOR_TYPE = 1;
/**
* HitTestResult for hitting a phone number
*/
public static final int PHONE_TYPE = 2;
/**
* HitTestResult for hitting a map address
*/
public static final int GEO_TYPE = 3;
/**
* HitTestResult for hitting an email address
*/
public static final int EMAIL_TYPE = 4;
/**
* HitTestResult for hitting an HTML::img tag
*/
public static final int IMAGE_TYPE = 5;
/**
* @deprecated This type is no longer used.
*/
@Deprecated
public static final int IMAGE_ANCHOR_TYPE = 6;
/**
* HitTestResult for hitting a HTML::a tag with src=http
*/
public static final int SRC_ANCHOR_TYPE = 7;
/**
* HitTestResult for hitting a HTML::a tag with src=http + HTML::img
*/
public static final int SRC_IMAGE_ANCHOR_TYPE = 8;
/**
* HitTestResult for hitting an edit text area
*/
public static final int EDIT_TEXT_TYPE = 9;
private int mType;
private String mExtra;
/**
* @hide Only for use by WebViewProvider implementations
*/
public HitTestResult() {
mType = UNKNOWN_TYPE;
}
/**
* @hide Only for use by WebViewProvider implementations
*/
public void setType(int type) {
mType = type;
}
/**
* @hide Only for use by WebViewProvider implementations
*/
public void setExtra(String extra) {
mExtra = extra;
}
/**
* Gets the type of the hit test result.
* @return See the XXX_TYPE constants defined in this class.
*/
public int getType() {
return mType;
}
/**
* Gets additional type-dependant information about the result, see
* {@link WebView#getHitTestResult()} for details.
* @return may either be null or contain extra information about this result.
*/
public String getExtra() {
return mExtra;
}
}
/**
* Construct a new WebView with a Context object.
* @param context A Context object used to access application assets.
*/
public WebView(Context context) {
this(context, null);
}
/**
* Construct a new WebView with layout parameters.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
*/
public WebView(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.webViewStyle);
}
/**
* Construct a new WebView with layout parameters and a default style.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
* @param defStyle The default style resource ID.
*/
public WebView(Context context, AttributeSet attrs, int defStyle) {
this(context, attrs, defStyle, false);
}
/**
* Construct a new WebView with layout parameters and a default style.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
* @param defStyle The default style resource ID.
* @param privateBrowsing If true the web view will be initialized in private mode.
*/
public WebView(Context context, AttributeSet attrs, int defStyle,
boolean privateBrowsing) {
this(context, attrs, defStyle, null, privateBrowsing);
}
/**
* Construct a new WebView with layout parameters, a default style and a set
* of custom Javscript interfaces to be added to the WebView at initialization
* time. This guarantees that these interfaces will be available when the JS
* context is initialized.
* @param context A Context object used to access application assets.
* @param attrs An AttributeSet passed to our parent.
* @param defStyle The default style resource ID.
* @param javaScriptInterfaces is a Map of interface names, as keys, and
* object implementing those interfaces, as values.
* @param privateBrowsing If true the web view will be initialized in private mode.
* @hide This is used internally by dumprendertree, as it requires the javaScript interfaces to
* be added synchronously, before a subsequent loadUrl call takes effect.
*/
@SuppressWarnings("deprecation") // for super() call into deprecated base class constructor.
protected WebView(Context context, AttributeSet attrs, int defStyle,
Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) {
super(context, attrs, defStyle);
if (context == null) {
throw new IllegalArgumentException("Invalid context argument");
}
checkThread();
ensureProviderCreated();
mProvider.init(javaScriptInterfaces, privateBrowsing);
}
/**
* Specify whether the horizontal scrollbar has overlay style.
* @param overlay TRUE if horizontal scrollbar should have overlay style.
*/
public void setHorizontalScrollbarOverlay(boolean overlay) {
checkThread();
mProvider.setHorizontalScrollbarOverlay(overlay);
}
/**
* Specify whether the vertical scrollbar has overlay style.
* @param overlay TRUE if vertical scrollbar should have overlay style.
*/
public void setVerticalScrollbarOverlay(boolean overlay) {
checkThread();
mProvider.setVerticalScrollbarOverlay(overlay);
}
/**
* Return whether horizontal scrollbar has overlay style
* @return TRUE if horizontal scrollbar has overlay style.
*/
public boolean overlayHorizontalScrollbar() {
checkThread();
return mProvider.overlayHorizontalScrollbar();
}
/**
* Return whether vertical scrollbar has overlay style
* @return TRUE if vertical scrollbar has overlay style.
*/
public boolean overlayVerticalScrollbar() {
checkThread();
return mProvider.overlayVerticalScrollbar();
}
/**
* Return the visible height (in pixels) of the embedded title bar (if any).
*
* @deprecated This method is now obsolete.
*/
public int getVisibleTitleHeight() {
checkThread();
return mProvider.getVisibleTitleHeight();
}
/**
* @return The SSL certificate for the main top-level page or null if
* there is no certificate (the site is not secure).
*/
public SslCertificate getCertificate() {
checkThread();
return mProvider.getCertificate();
}
/**
* Sets the SSL certificate for the main top-level page.
*/
public void setCertificate(SslCertificate certificate) {
checkThread();
mProvider.setCertificate(certificate);
}
//-------------------------------------------------------------------------
// Methods called by activity
//-------------------------------------------------------------------------
/**
* Save the username and password for a particular host in the WebView's
* internal database.
* @param host The host that required the credentials.
* @param username The username for the given host.
* @param password The password for the given host.
*/
public void savePassword(String host, String username, String password) {
checkThread();
mProvider.savePassword(host, username, password);
}
/**
* Set the HTTP authentication credentials for a given host and realm.
*
* @param host The host for the credentials.
* @param realm The realm for the credentials.
* @param username The username for the password. If it is null, it means
* password can't be saved.
* @param password The password
*/
public void setHttpAuthUsernamePassword(String host, String realm,
String username, String password) {
checkThread();
mProvider.setHttpAuthUsernamePassword(host, realm, username, password);
}
/**
* Retrieve the HTTP authentication username and password for a given
* host & realm pair
*
* @param host The host for which the credentials apply.
* @param realm The realm for which the credentials apply.
* @return String[] if found, String[0] is username, which can be null and
* String[1] is password. Return null if it can't find anything.
*/
public String[] getHttpAuthUsernamePassword(String host, String realm) {
checkThread();
return mProvider.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() {
checkThread();
mProvider.destroy();
}
/**
* Enables platform notifications of data state and proxy changes.
* Notifications are enabled by default.
*
* @deprecated This method is now obsolete.
*/
@Deprecated
public static void enablePlatformNotifications() {
checkThread();
getFactory().getStatics().setPlatformNotificationsEnabled(true);
}
/**
* Disables platform notifications of data state and proxy changes.
* Notifications are enabled by default.
*
* @deprecated This method is now obsolete.
*/
@Deprecated
public static void disablePlatformNotifications() {
checkThread();
getFactory().getStatics().setPlatformNotificationsEnabled(false);
}
/**
* Inform WebView of the network state. This is used to set
* the JavaScript property window.navigator.isOnline and
* generates the online/offline event as specified in HTML5, sec. 5.7.7
* @param networkUp boolean indicating if network is available
*/
public void setNetworkAvailable(boolean networkUp) {
checkThread();
mProvider.setNetworkAvailable(networkUp);
}
/**
* Save the state of this WebView used in
* {@link android.app.Activity#onSaveInstanceState}. Please note that this
* method no longer stores the display data for this WebView. The previous
* behavior could potentially leak files if {@link #restoreState} was never
* called. See {@link #savePicture} and {@link #restorePicture} for saving
* and restoring the display data.
* @param outState The Bundle to store the WebView state.
* @return The same copy of the back/forward list used to save the state. If
* saveState fails, the returned list will be null.
* @see #savePicture
* @see #restorePicture
*/
public WebBackForwardList saveState(Bundle outState) {
checkThread();
return mProvider.saveState(outState);
}
/**
* Save the current display data to the Bundle given. Used in conjunction
* with {@link #saveState}.
* @param b A Bundle to store the display data.
* @param dest The file to store the serialized picture data. Will be
* overwritten with this WebView's picture data.
* @return True if the picture was successfully saved.
* @deprecated This method is now obsolete.
*/
@Deprecated
public boolean savePicture(Bundle b, final File dest) {
checkThread();
return mProvider.savePicture(b, dest);
}
/**
* Restore the display data that was save in {@link #savePicture}. Used in
* conjunction with {@link #restoreState}.
*
* Note that this will not work if the WebView is hardware accelerated.
* @param b A Bundle containing the saved display data.
* @param src The file where the picture data was stored.
* @return True if the picture was successfully restored.
* @deprecated This method is now obsolete.
*/
@Deprecated
public boolean restorePicture(Bundle b, File src) {
checkThread();
return mProvider.restorePicture(b, src);
}
/**
* Restore the state of this WebView from the given map used in
* {@link android.app.Activity#onRestoreInstanceState}. This method should
* be called to restore the state of the WebView before using the object. If
* it is called after the WebView has had a chance to build state (load
* pages, create a back/forward list, etc.) there may be undesirable
* side-effects. Please note that this method no longer restores the
* display data for this WebView. See {@link #savePicture} and {@link
* #restorePicture} for saving and restoring the display data.
* @param inState The incoming Bundle of state.
* @return The restored back/forward list or null if restoreState failed.
* @see #savePicture
* @see #restorePicture
*/
public WebBackForwardList restoreState(Bundle inState) {
checkThread();
return mProvider.restoreState(inState);
}
/**
* Load the given URL with the specified additional HTTP headers.
* @param url The URL of the resource to load.
* @param additionalHttpHeaders The additional headers to be used in the
* HTTP request for this URL, specified as a map from name to
* value. Note that if this map contains any of the headers
* that are set by default by the WebView, such as those
* controlling caching, accept types or the User-Agent, their
* values may be overriden by the WebView's defaults.
*/
public void loadUrl(String url, Map<String, String> additionalHttpHeaders) {
checkThread();
mProvider.loadUrl(url, additionalHttpHeaders);
}
/**
* Load the given URL.
* @param url The URL of the resource to load.
*/
public void loadUrl(String url) {
checkThread();
mProvider.loadUrl(url);
}
/**
* Load the url with postData using "POST" method into the WebView. If url
* is not a network url, it will be loaded with {link
* {@link #loadUrl(String)} instead.
*
* @param url The url of the resource to load.
* @param postData The data will be passed to "POST" request.
*/
public void postUrl(String url, byte[] postData) {
checkThread();
mProvider.postUrl(url, postData);
}
/**
* Load the given data into the WebView using a 'data' scheme URL.
* <p>
* Note that JavaScript's same origin policy means that script running in a
* page loaded using this method will be unable to access content loaded
* using any scheme other than 'data', including 'http(s)'. To avoid this
* restriction, use {@link
* #loadDataWithBaseURL(String,String,String,String,String)
* loadDataWithBaseURL()} with an appropriate base URL.
* <p>
* If the value of the encoding parameter is 'base64', then the data must
* be encoded as base64. Otherwise, the data must use ASCII encoding for
* octets inside the range of safe URL characters and use the standard %xx
* hex encoding of URLs for octets outside that range. For example,
* '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively.
* <p>
* The 'data' scheme URL formed by this method uses the default US-ASCII
* charset. If you need need to set a different charset, you should form a
* 'data' scheme URL which explicitly specifies a charset parameter in the
* mediatype portion of the URL and call {@link #loadUrl(String)} instead.
* Note that the charset obtained from the mediatype portion of a data URL
* always overrides that specified in the HTML or XML document itself.
* @param data A String of data in the given encoding.
* @param mimeType The MIME type of the data, e.g. 'text/html'.
* @param encoding The encoding of the data.
*/
public void loadData(String data, String mimeType, String encoding) {
checkThread();
mProvider.loadData(data, mimeType, encoding);
}
/**
* Load the given data into the WebView, using baseUrl as the base URL for
* the content. The base URL is used both to resolve relative URLs and when
* applying JavaScript's same origin policy. The historyUrl is used for the
* history entry.
* <p>
* Note that content specified in this way can access local device files
* (via 'file' scheme URLs) only if baseUrl specifies a scheme other than
* 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'.
* <p>
* If the base URL uses the data scheme, this method is equivalent to
* calling {@link #loadData(String,String,String) loadData()} and the
* historyUrl is ignored.
* @param baseUrl URL to use as the page's base URL. If null defaults to
* 'about:blank'
* @param data A String of data in the given encoding.
* @param mimeType The MIMEType of the data, e.g. 'text/html'. If null,
* defaults to 'text/html'.
* @param encoding The encoding of the data.
* @param historyUrl URL to use as the history entry, if null defaults to
* 'about:blank'.
*/
public void loadDataWithBaseURL(String baseUrl, String data,
String mimeType, String encoding, String historyUrl) {
checkThread();
mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl);
}
/**
* Saves the current view as a web archive.
*
* @param filename The filename where the archive should be placed.
*/
public void saveWebArchive(String filename) {
checkThread();
mProvider.saveWebArchive(filename);
}
/**
* Saves the current view as a web archive.
*
* @param basename The filename where the archive should be placed.
* @param autoname If false, takes basename to be a file. If true, basename
* is assumed to be a directory in which a filename will be
* chosen according to the url of the current page.
* @param callback Called after the web archive has been saved. The
* parameter for onReceiveValue will either be the filename
* under which the file was saved, or null if saving the
* file failed.
*/
public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) {
checkThread();
mProvider.saveWebArchive(basename, autoname, callback);
}
/**
* Stop the current load.
*/
public void stopLoading() {
checkThread();
mProvider.stopLoading();
}
/**
* Reload the current url.
*/
public void reload() {
checkThread();
mProvider.reload();
}
/**
* Return true if this WebView has a back history item.
* @return True iff this WebView has a back history item.
*/
public boolean canGoBack() {
checkThread();
return mProvider.canGoBack();
}
/**
* Go back in the history of this WebView.
*/
public void goBack() {
checkThread();
mProvider.goBack();
}
/**
* Return true if this WebView has a forward history item.
* @return True iff this Webview has a forward history item.
*/
public boolean canGoForward() {
checkThread();
return mProvider.canGoForward();
}
/**
* Go forward in the history of this WebView.
*/
public void goForward() {
checkThread();
mProvider.goForward();
}
/**
* Return true if the page can go back or forward the given
* number of steps.
* @param steps The negative or positive number of steps to move the
* history.
*/
public boolean canGoBackOrForward(int steps) {
checkThread();
return mProvider.canGoBackOrForward(steps);
}
/**
* Go to the history item that is the number of steps away from
* the current item. Steps is negative if backward and positive
* if forward.
* @param steps The number of steps to take back or forward in the back
* forward list.
*/
public void goBackOrForward(int steps) {
checkThread();
mProvider.goBackOrForward(steps);
}
/**
* Returns true if private browsing is enabled in this WebView.
*/
public boolean isPrivateBrowsingEnabled() {
checkThread();
return mProvider.isPrivateBrowsingEnabled();
}
/**
* Scroll the contents of the view up by half the view size
* @param top true to jump to the top of the page
* @return true if the page was scrolled
*/
public boolean pageUp(boolean top) {
checkThread();
return mProvider.pageUp(top);
}
/**
* Scroll the contents of the view down by half the page size
* @param bottom true to jump to bottom of page
* @return true if the page was scrolled
*/
public boolean pageDown(boolean bottom) {
checkThread();
return mProvider.pageDown(bottom);
}
/**
* Clear the view so that onDraw() will draw nothing but white background,
* and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY
*/
public void clearView() {
checkThread();
mProvider.clearView();
}
/**
* Return a new picture that captures the current display of the webview.
* This is a copy of the display, and will be unaffected if the webview
* later loads a different URL.
*
* @return a picture containing the current contents of the view. Note this
* picture is of the entire document, and is not restricted to the
* bounds of the view.
*/
public Picture capturePicture() {
checkThread();
return mProvider.capturePicture();
}
/**
* Return the current scale of the WebView
* @return The current scale.
*/
public float getScale() {
checkThread();
return mProvider.getScale();
}
/**
* Set the initial scale for the WebView. 0 means default. If
* {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the
* way. Otherwise it starts with 100%. If initial scale is greater than 0,
* WebView starts with this value as initial scale.
* Please note that unlike the scale properties in the viewport meta tag,
* this method doesn't take the screen density into account.
*
* @param scaleInPercent The initial scale in percent.
*/
public void setInitialScale(int scaleInPercent) {
checkThread();
mProvider.setInitialScale(scaleInPercent);
}
/**
* Invoke the graphical zoom picker widget for this WebView. This will
* result in the zoom widget appearing on the screen to control the zoom
* level of this WebView.
*/
public void invokeZoomPicker() {
checkThread();
mProvider.invokeZoomPicker();
}
/**
* Return a HitTestResult based on the current cursor node. If a HTML::a tag
* is found and the anchor has a non-JavaScript url, the HitTestResult type
* is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the
* anchor does not have a url or if it is a JavaScript url, the type will
* be UNKNOWN_TYPE and the url has to be retrieved through
* {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is
* found, the HitTestResult type is set to IMAGE_TYPE and the url is set in
* the "extra" field. A type of
* SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as
* a child node. If a phone number is found, the HitTestResult type is set
* to PHONE_TYPE and the phone number is set in the "extra" field of
* HitTestResult. If a map address is found, the HitTestResult type is set
* to GEO_TYPE and the address is set in the "extra" field of HitTestResult.
* If an email address is found, the HitTestResult type is set to EMAIL_TYPE
* and the email is set in the "extra" field of HitTestResult. Otherwise,
* HitTestResult type is set to UNKNOWN_TYPE.
*/
public HitTestResult getHitTestResult() {
checkThread();
return mProvider.getHitTestResult();
}
/**
* Request the anchor or image element URL at the last tapped point.
* If hrefMsg is null, this method returns immediately and does not
* dispatch hrefMsg to its target. If the tapped point hits an image,
* an anchor, or an image in an anchor, the message associates
* strings in named keys in its data. The value paired with the key
* may be an empty string.
*
* @param hrefMsg This message will be dispatched with the result of the
* request. The message data contains three keys:
* - "url" returns the anchor's href attribute.
* - "title" returns the anchor's text.
* - "src" returns the image's src attribute.
*/
public void requestFocusNodeHref(Message hrefMsg) {
checkThread();
mProvider.requestFocusNodeHref(hrefMsg);
}
/**
* Request the url of the image last touched by the user. msg will be sent
* to its target with a String representing the url as its object.
*
* @param msg This message will be dispatched with the result of the request
* as the data member with "url" as key. The result can be null.
*/
public void requestImageRef(Message msg) {
checkThread();
mProvider.requestImageRef(msg);
}
/**
* Get the url for the current page. This is not always the same as the url
* passed to WebViewClient.onPageStarted because although the load for
* that url has begun, the current page may not have changed.
* @return The url for the current page.
*/
public String getUrl() {
checkThread();
return mProvider.getUrl();
}
/**
* Get the original url for the current page. This is not always the same
* as the url passed to WebViewClient.onPageStarted because although the
* load for that url has begun, the current page may not have changed.
* Also, there may have been redirects resulting in a different url to that
* originally requested.
* @return The url that was originally requested for the current page.
*/
public String getOriginalUrl() {
checkThread();
return mProvider.getOriginalUrl();
}
/**
* Get the title for the current page. This is the title of the current page
* until WebViewClient.onReceivedTitle is called.
* @return The title for the current page.
*/
public String getTitle() {
checkThread();
return mProvider.getTitle();
}
/**
* Get the favicon for the current page. This is the favicon of the current
* page until WebViewClient.onReceivedIcon is called.
* @return The favicon for the current page.
*/
public Bitmap getFavicon() {
checkThread();
return mProvider.getFavicon();
}
/**
* Get the touch icon url for the apple-touch-icon <link> element, or
* a URL on this site's server pointing to the standard location of a
* touch icon.
* @hide
*/
public String getTouchIconUrl() {
return mProvider.getTouchIconUrl();
}
/**
* Get the progress for the current page.
* @return The progress for the current page between 0 and 100.
*/
public int getProgress() {
checkThread();
return mProvider.getProgress();
}
/**
* @return the height of the HTML content.
*/
public int getContentHeight() {
checkThread();
return mProvider.getContentHeight();
}
/**
* @return the width of the HTML content.
* @hide
*/
public int getContentWidth() {
return mProvider.getContentWidth();
}
/**
* Pause all layout, parsing, and JavaScript timers for all webviews. This
* is a global requests, not restricted to just this webview. This can be
* useful if the application has been paused.
*/
public void pauseTimers() {
checkThread();
mProvider.pauseTimers();
}
/**
* Resume all layout, parsing, and JavaScript timers for all webviews.
* This will resume dispatching all timers.
*/
public void resumeTimers() {
checkThread();
mProvider.resumeTimers();
}
/**
* Call this to pause any extra processing associated with this WebView and
* its associated DOM, plugins, JavaScript etc. For example, if the WebView
* is taken offscreen, this could be called to reduce unnecessary CPU or
* network traffic. When the WebView is again "active", call onResume().
*
* Note that this differs from pauseTimers(), which affects all WebViews.
*/
public void onPause() {
checkThread();
mProvider.onPause();
}
/**
* Call this to resume a WebView after a previous call to onPause().
*/
public void onResume() {
checkThread();
mProvider.onResume();
}
/**
* 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 mProvider.isPaused();
}
/**
* Call this to inform the view that memory is low so that it can
* free any available memory.
*/
public void freeMemory() {
checkThread();
mProvider.freeMemory();
}
/**
* Clear the resource cache. Note that the cache is per-application, so
* this will clear the cache for all WebViews used.
*
* @param includeDiskFiles If false, only the RAM cache is cleared.
*/
public void clearCache(boolean includeDiskFiles) {
checkThread();
mProvider.clearCache(includeDiskFiles);
}
/**
* Make sure that clearing the form data removes the adapter from the
* currently focused textfield if there is one.
*/
public void clearFormData() {
checkThread();
mProvider.clearFormData();
}
/**
* Tell the WebView to clear its internal back/forward list.
*/
public void clearHistory() {
checkThread();
mProvider.clearHistory();
}
/**
* Clear the SSL preferences table stored in response to proceeding with SSL
* certificate errors.
*/
public void clearSslPreferences() {
checkThread();
mProvider.clearSslPreferences();
}
/**
* Return the WebBackForwardList for this WebView. This contains the
* back/forward list for use in querying each item in the history stack.
* This is a copy of the private WebBackForwardList so it contains only a
* snapshot of the current state. Multiple calls to this method may return
* different objects. The object returned from this method will not be
* updated to reflect any new state.
*/
public WebBackForwardList copyBackForwardList() {
checkThread();
return mProvider.copyBackForwardList();
}
/**
* Register the interface to be used when a find-on-page result has become
* available. This will replace the current handler.
*
* @param listener An implementation of FindListener
* @hide
*/
public void setFindListener(FindListener listener) {
checkThread();
mProvider.setFindListener(listener);
}
/**
* Highlight and scroll to the next occurance of String in findAll.
* Wraps the page infinitely, and scrolls. Must be called after
* calling findAll.
*
* @param forward Direction to search.
*/
public void findNext(boolean forward) {
checkThread();
mProvider.findNext(forward);
}
/**
* Find all instances of find on the page and highlight them.
*
* @param find String to find.
* @return int The number of occurances of the String "find"
* that were found.
*/
public int findAll(String find) {
checkThread();
return mProvider.findAll(find);
}
/**
* Find all instances of find on the page and highlight them,
* asynchronously.
*
* @param find String to find.
* @hide
*/
public void findAllAsync(String find) {
checkThread();
mProvider.findAllAsync(find);
}
/**
* Start an ActionMode for finding text in this WebView. Only works if this
* WebView is attached to the view system.
* @param text If non-null, will be the initial text to search for.
* Otherwise, the last String searched for in this WebView will
* be used to start.
* @param showIme If true, show the IME, assuming the user will begin typing.
* If false and text is non-null, perform a find all.
* @return boolean True if the find dialog is shown, false otherwise.
*/
public boolean showFindDialog(String text, boolean showIme) {
checkThread();
return mProvider.showFindDialog(text, showIme);
}
/**
* Return the first substring consisting of the address of a physical
* location. Currently, only addresses in the United States are detected,
* and consist of:
* - a house number
* - a street name
* - a street type (Road, Circle, etc), either spelled out or abbreviated
* - a city name
* - a state or territory, either spelled out or two-letter abbr.
* - an optional 5 digit or 9 digit zip code.
*
* All names must be correctly capitalized, and the zip code, if present,
* must be valid for the state. The street type must be a standard USPS
* spelling or abbreviation. The state or territory must also be spelled
* or abbreviated using USPS standards. The house number may not exceed
* five digits.
* @param addr The string to search for addresses.
*
* @return the address, or if no address is found, return null.
*/
public static String findAddress(String addr) {
checkThread();
return getFactory().getStatics().findAddress(addr);
}
/*
* Clear the highlighting surrounding text matches created by findAll.
*/
public void clearMatches() {
checkThread();
mProvider.clearMatches();
}
/**
* Query the document to see if it contains any image references. The
* message object will be dispatched with arg1 being set to 1 if images
* were found and 0 if the document does not reference any images.
* @param response The message that will be dispatched with the result.
*/
public void documentHasImages(Message response) {
checkThread();
mProvider.documentHasImages(response);
}
/**
* Set the WebViewClient that will receive various notifications and
* requests. This will replace the current handler.
* @param client An implementation of WebViewClient.
*/
public void setWebViewClient(WebViewClient client) {
checkThread();
mProvider.setWebViewClient(client);
}
/**
* Register the interface to be used when content can not be handled by
* the rendering engine, and should be downloaded instead. This will replace
* the current handler.
* @param listener An implementation of DownloadListener.
*/
public void setDownloadListener(DownloadListener listener) {
checkThread();
mProvider.setDownloadListener(listener);
}
/**
* Set the chrome handler. This is an implementation of WebChromeClient for
* use in handling JavaScript dialogs, favicons, titles, and the progress.
* This will replace the current handler.
* @param client An implementation of WebChromeClient.
*/
public void setWebChromeClient(WebChromeClient client) {
checkThread();
mProvider.setWebChromeClient(client);
}
/**
* Set the Picture listener. This is an interface used to receive
* notifications of a new Picture.
* @param listener An implementation of WebView.PictureListener.
* @deprecated This method is now obsolete.
*/
@Deprecated
public void setPictureListener(PictureListener listener) {
checkThread();
mProvider.setPictureListener(listener);
}
/**
* This method injects the supplied Java object into the WebView. The
* object is injected into the JavaScript context of the main frame, using
* the supplied name. This allows the Java object to be accessed from
* JavaScript. Note that that injected objects will not appear in
* JavaScript until the page is next (re)loaded. For example:
* <pre> webView.addJavascriptInterface(new Object(), "injectedObject");
* webView.loadData("<!DOCTYPE html><title></title>", "text/html", null);
* webView.loadUrl("javascript:alert(injectedObject.toString())");</pre>
* <p><strong>IMPORTANT:</strong>
* <ul>
* <li> addJavascriptInterface() can be used to allow JavaScript to control
* the host application. This is a powerful feature, but also presents a
* security risk. Use of this method in a WebView containing untrusted
* content could allow an attacker to manipulate the host application in
* unintended ways, executing Java code with the permissions of the host
* application. Use extreme care when using this method in a WebView which
* could contain untrusted content.
* <li> JavaScript interacts with Java object on a private, background
* thread of the WebView. Care is therefore required to maintain thread
* safety.</li>
* </ul></p>
* @param object The Java object to inject into the WebView's JavaScript
* context. Null values are ignored.
* @param name The name used to expose the instance in JavaScript.
*/
public void addJavascriptInterface(Object object, String name) {
checkThread();
mProvider.addJavascriptInterface(object, name);
}
/**
* Removes a previously added JavaScript interface with the given name.
* @param interfaceName The name of the interface to remove.
*/
public void removeJavascriptInterface(String interfaceName) {
checkThread();
mProvider.removeJavascriptInterface(interfaceName);
}
/**
* Return the WebSettings object used to control the settings for this
* WebView.
* @return A WebSettings object that can be used to control this WebView's
* settings.
*/
public WebSettings getSettings() {
checkThread();
return mProvider.getSettings();
}
/**
* Return the list of currently loaded plugins.
* @return The list of currently loaded plugins.
*
* @hide
* @deprecated This was used for Gears, which has been deprecated.
*/
@Deprecated
public static synchronized PluginList getPluginList() {
checkThread();
return new PluginList();
}
/**
* @hide
* @deprecated This was used for Gears, which has been deprecated.
*/
@Deprecated
public void refreshPlugins(boolean reloadOpenPages) {
checkThread();
}
/**
* Use this method to put the WebView into text selection mode.
* Do not rely on this functionality; it will be deprecated in the future.
* @deprecated This method is now obsolete.
*/
@Deprecated
public void emulateShiftHeld() {
checkThread();
mProvider.emulateShiftHeld();
}
/**
* @deprecated WebView no longer needs to implement
* ViewGroup.OnHierarchyChangeListener. This method does nothing now.
*/
@Override
// Cannot add @hide as this can always be accessed via the interface.
@Deprecated
public void onChildViewAdded(View parent, View child) {}
/**
* @deprecated WebView no longer needs to implement
* ViewGroup.OnHierarchyChangeListener. This method does nothing now.
*/
@Override
// Cannot add @hide as this can always be accessed via the interface.
@Deprecated
public void onChildViewRemoved(View p, View child) {}
/**
* @deprecated WebView should not have implemented
* ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now.
*/
@Override
// Cannot add @hide as this can always be accessed via the interface.
@Deprecated
public void onGlobalFocusChanged(View oldFocus, View newFocus) {
}
public void setMapTrackballToArrowKeys(boolean setMap) {
checkThread();
mProvider.setMapTrackballToArrowKeys(setMap);
}
public void flingScroll(int vx, int vy) {
checkThread();
mProvider.flingScroll(vx, vy);
}
/**
* Returns a view containing zoom controls i.e. +/- buttons. The caller is
* in charge of installing this view to the view hierarchy. This view will
* become visible when the user starts scrolling via touch and fade away if
* the user does not interact with it.
* <p/>
* API version 3 introduces a built-in zoom mechanism that is shown
* automatically by the MapView. This is the preferred approach for
* showing the zoom UI.
*
* @deprecated The built-in zoom mechanism is preferred, see
* {@link WebSettings#setBuiltInZoomControls(boolean)}.
*/
@Deprecated
public View getZoomControls() {
checkThread();
return mProvider.getZoomControls();
}
/**
* @return TRUE if the WebView can be zoomed in.
*/
public boolean canZoomIn() {
checkThread();
return mProvider.canZoomIn();
}
/**
* @return TRUE if the WebView can be zoomed out.
*/
public boolean canZoomOut() {
checkThread();
return mProvider.canZoomOut();
}
/**
* Perform zoom in in the webview
* @return TRUE if zoom in succeeds. FALSE if no zoom changes.
*/
public boolean zoomIn() {
checkThread();
return mProvider.zoomIn();
}
/**
* Perform zoom out in the webview
* @return TRUE if zoom out succeeds. FALSE if no zoom changes.
*/
public boolean zoomOut() {
checkThread();
return mProvider.zoomOut();
}
/**
* @deprecated This method is now obsolete.
*/
@Deprecated
public void debugDump() {
checkThread();
mProvider.debugDump();
}
//-------------------------------------------------------------------------
// Interface for WebView providers
//-------------------------------------------------------------------------
/**
* Used by providers to obtain the underlying implementation, e.g. when the appliction
* responds to WebViewClient.onCreateWindow() request.
*
* @hide WebViewProvider is not public API.
*/
public WebViewProvider getWebViewProvider() {
return mProvider;
}
/**
* Callback interface, allows the provider implementation to access non-public methods
* and fields, and make super-class calls in this WebView instance.
* @hide Only for use by WebViewProvider implementations
*/
public class PrivateAccess {
// ---- Access to super-class methods ----
public int super_getScrollBarStyle() {
return WebView.super.getScrollBarStyle();
}
public void super_scrollTo(int scrollX, int scrollY) {
WebView.super.scrollTo(scrollX, scrollY);
}
public void super_computeScroll() {
WebView.super.computeScroll();
}
public boolean super_performLongClick() {
return WebView.super.performLongClick();
}
public boolean super_setFrame(int left, int top, int right, int bottom) {
return WebView.super.setFrame(left, top, right, bottom);
}
public boolean super_dispatchKeyEvent(KeyEvent event) {
return WebView.super.dispatchKeyEvent(event);
}
public boolean super_onGenericMotionEvent(MotionEvent event) {
return WebView.super.onGenericMotionEvent(event);
}
public boolean super_requestFocus(int direction, Rect previouslyFocusedRect) {
return WebView.super.requestFocus(direction, previouslyFocusedRect);
}
public void super_setLayoutParams(ViewGroup.LayoutParams params) {
WebView.super.setLayoutParams(params);
}
// ---- Access to non-public methods ----
public void overScrollBy(int deltaX, int deltaY,
int scrollX, int scrollY,
int scrollRangeX, int scrollRangeY,
int maxOverScrollX, int maxOverScrollY,
boolean isTouchEvent) {
WebView.this.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY,
maxOverScrollX, maxOverScrollY, isTouchEvent);
}
public void awakenScrollBars(int duration) {
WebView.this.awakenScrollBars(duration);
}
public void awakenScrollBars(int duration, boolean invalidate) {
WebView.this.awakenScrollBars(duration, invalidate);
}
public float getVerticalScrollFactor() {
return WebView.this.getVerticalScrollFactor();
}
public float getHorizontalScrollFactor() {
return WebView.this.getHorizontalScrollFactor();
}
public void setMeasuredDimension(int measuredWidth, int measuredHeight) {
WebView.this.setMeasuredDimension(measuredWidth, measuredHeight);
}
public void onScrollChanged(int l, int t, int oldl, int oldt) {
WebView.this.onScrollChanged(l, t, oldl, oldt);
}
public int getHorizontalScrollbarHeight() {
return WebView.this.getHorizontalScrollbarHeight();
}
// ---- Access to (non-public) fields ----
/** Raw setter for the scroll X value, without invoking onScrollChanged handlers etc. */
public void setScrollXRaw(int scrollX) {
WebView.this.mScrollX = scrollX;
}
/** Raw setter for the scroll Y value, without invoking onScrollChanged handlers etc. */
public void setScrollYRaw(int scrollY) {
WebView.this.mScrollY = scrollY;
}
}
//-------------------------------------------------------------------------
// Private internal stuff
//-------------------------------------------------------------------------
// Cache the factory both for efficiency, and ensure any one process gets all webviews from the
// same provider.
private static WebViewFactoryProvider sProviderFactory;
private WebViewProvider mProvider;
private void ensureProviderCreated() {
checkThread();
if (mProvider == null) {
if (DEBUG) Log.v(LOGTAG, "instantiating webview provider instance");
// As this can get called during the base class constructor chain, pass the minimum
// number of dependencies here; the rest are deferred to init().
mProvider = getFactory().createWebView(this, new PrivateAccess());
}
}
private static synchronized WebViewFactoryProvider getFactory() {
// For now the main purpose of this function (and the factory abstration) is to keep
// us honest and minimize usage of WebViewClassic internals when binding the proxy.
checkThread();
if (sProviderFactory != null) return sProviderFactory;
sProviderFactory = getFactoryByName(DEFAULT_WEB_VIEW_FACTORY);
if (sProviderFactory == null) {
if (DEBUG) Log.v (LOGTAG, "Falling back to explicit linkage");
sProviderFactory = new WebViewClassic.Factory();
}
return sProviderFactory;
}
private static WebViewFactoryProvider getFactoryByName(String providerName) {
try {
if (DEBUG) Log.v(LOGTAG, "attempt to load class " + providerName);
Class<?> c = Class.forName(providerName);
if (DEBUG) Log.v(LOGTAG, "instantiating factory");
return (WebViewFactoryProvider) c.newInstance();
} catch (ClassNotFoundException e) {
Log.e(LOGTAG, "error loading " + providerName, e);
} catch (IllegalAccessException e) {
Log.e(LOGTAG, "error loading " + providerName, e);
} catch (InstantiationException e) {
Log.e(LOGTAG, "error loading " + providerName, e);
}
return null;
}
private static void checkThread() {
if (Looper.myLooper() != Looper.getMainLooper()) {
Throwable throwable = new Throwable(
"Warning: A WebView method was called on thread '" +
Thread.currentThread().getName() + "'. " +
"All WebView methods must be called on the UI thread. " +
"Future versions of WebView may not support use on other threads.");
Log.w(LOGTAG, Log.getStackTraceString(throwable));
StrictMode.onWebViewMethodCalledOnWrongThread(throwable);
}
}
//-------------------------------------------------------------------------
// Override View methods
//-------------------------------------------------------------------------
// TODO: Add a test that enumerates all methods in ViewDelegte & ScrollDelegate, and ensures
// there's a corresponding override (or better, caller) for each of them in here.
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
mProvider.getViewDelegate().onAttachedToWindow();
}
@Override
protected void onDetachedFromWindow() {
mProvider.getViewDelegate().onDetachedFromWindow();
super.onDetachedFromWindow();
}
@Override
public void setLayoutParams(ViewGroup.LayoutParams params) {
mProvider.getViewDelegate().setLayoutParams(params);
}
@Override
public void setOverScrollMode(int mode) {
super.setOverScrollMode(mode);
// This method may called in the constructor chain, before the WebView provider is
// created. (Fortunately, this is the only method we override that can get called by
// any of the base class constructors).
ensureProviderCreated();
mProvider.getViewDelegate().setOverScrollMode(mode);
}
@Override
public void setScrollBarStyle(int style) {
mProvider.getViewDelegate().setScrollBarStyle(style);
super.setScrollBarStyle(style);
}
@Override
protected int computeHorizontalScrollRange() {
return mProvider.getScrollDelegate().computeHorizontalScrollRange();
}
@Override
protected int computeHorizontalScrollOffset() {
return mProvider.getScrollDelegate().computeHorizontalScrollOffset();
}
@Override
protected int computeVerticalScrollRange() {
return mProvider.getScrollDelegate().computeVerticalScrollRange();
}
@Override
protected int computeVerticalScrollOffset() {
return mProvider.getScrollDelegate().computeVerticalScrollOffset();
}
@Override
protected int computeVerticalScrollExtent() {
return mProvider.getScrollDelegate().computeVerticalScrollExtent();
}
@Override
public void computeScroll() {
mProvider.getScrollDelegate().computeScroll();
}
@Override
public boolean onHoverEvent(MotionEvent event) {
return mProvider.getViewDelegate().onHoverEvent(event);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return mProvider.getViewDelegate().onTouchEvent(event);
}
@Override
public boolean onGenericMotionEvent(MotionEvent event) {
return mProvider.getViewDelegate().onGenericMotionEvent(event);
}
@Override
public boolean onTrackballEvent(MotionEvent event) {
return mProvider.getViewDelegate().onTrackballEvent(event);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
return mProvider.getViewDelegate().onKeyDown(keyCode, event);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
return mProvider.getViewDelegate().onKeyUp(keyCode, event);
}
@Override
public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
return mProvider.getViewDelegate().onKeyMultiple(keyCode, repeatCount, event);
}
/*
TODO: These are not currently implemented in WebViewClassic, but it seems inconsistent not
to be delegating them too.
@Override
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
return mProvider.getViewDelegate().onKeyPreIme(keyCode, event);
}
@Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
return mProvider.getViewDelegate().onKeyLongPress(keyCode, event);
}
@Override
public boolean onKeyShortcut(int keyCode, KeyEvent event) {
return mProvider.getViewDelegate().onKeyShortcut(keyCode, event);
}
*/
@Deprecated
@Override
public boolean shouldDelayChildPressedState() {
return mProvider.getViewDelegate().shouldDelayChildPressedState();
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
mProvider.getViewDelegate().onInitializeAccessibilityNodeInfo(info);
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
mProvider.getViewDelegate().onInitializeAccessibilityEvent(event);
}
/** @hide */
@Override
protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar,
int l, int t, int r, int b) {
mProvider.getViewDelegate().onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b);
}
@Override
protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) {
mProvider.getViewDelegate().onOverScrolled(scrollX, scrollY, clampedX, clampedY);
}
@Override
protected void onWindowVisibilityChanged(int visibility) {
super.onWindowVisibilityChanged(visibility);
mProvider.getViewDelegate().onWindowVisibilityChanged(visibility);
}
@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
// Not using short-circuit OR: provider does suppress base-class call.
return mProvider.getViewDelegate().drawChild(canvas, child, drawingTime) |
super.drawChild(canvas, child, drawingTime);
}
@Override
protected void onDraw(Canvas canvas) {
mProvider.getViewDelegate().onDraw(canvas);
}
@Override
public boolean performLongClick() {
return mProvider.getViewDelegate().performLongClick();
}
@Override
protected void onConfigurationChanged(Configuration newConfig) {
mProvider.getViewDelegate().onConfigurationChanged(newConfig);
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
return mProvider.getViewDelegate().onCreateInputConnection(outAttrs);
}
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
mProvider.getViewDelegate().onVisibilityChanged(changedView, visibility);
}
@Override
public void onWindowFocusChanged(boolean hasWindowFocus) {
mProvider.getViewDelegate().onWindowFocusChanged(hasWindowFocus);
super.onWindowFocusChanged(hasWindowFocus);
}
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
mProvider.getViewDelegate().onFocusChanged(focused, direction, previouslyFocusedRect);
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
/** @hide */
@Override
protected boolean setFrame(int left, int top, int right, int bottom) {
return mProvider.getViewDelegate().setFrame(left, top, right, bottom);
}
@Override
protected void onSizeChanged(int w, int h, int ow, int oh) {
super.onSizeChanged(w, h, ow, oh);
mProvider.getViewDelegate().onSizeChanged(w, h, ow, oh);
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
mProvider.getViewDelegate().onScrollChanged(l, t, oldl, oldt);
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
return mProvider.getViewDelegate().dispatchKeyEvent(event);
}
@Override
public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
return mProvider.getViewDelegate().requestFocus(direction, previouslyFocusedRect);
}
@Deprecated
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
mProvider.getViewDelegate().onMeasure(widthMeasureSpec, heightMeasureSpec);
}
@Override
public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) {
return mProvider.getViewDelegate().requestChildRectangleOnScreen(child, rect, immediate);
}
@Override
public void setBackgroundColor(int color) {
mProvider.getViewDelegate().setBackgroundColor(color);
}
@Override
public void setLayerType(int layerType, Paint paint) {
super.setLayerType(layerType, paint);
mProvider.getViewDelegate().setLayerType(layerType, paint);
}
}