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.
*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:
*<uses-permission android:name="android.permission.INTERNET" />* *
This must be a child of the {@code
For more information, read * Building Web Apps in WebView.
* *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: *
* Uri uri = Uri.parse("http://www.example.com");
* Intent intent = new Intent(Intent.ACTION_VIEW, uri);
* startActivity(intent);
*
* See {@link android.content.Intent} for more information.
* *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()}:
** WebView webview = new WebView(this); * setContentView(webview); ** *
Then load the desired web page:
*
* // Simplest usage: note that an exception will NOT be thrown
* // if there is an error loading this page (see below).
* webview.loadUrl("http://slashdot.org/");
*
* // OR, you can also load from an HTML string:
* String summary = "<html><body>You scored <b>192</b> points.</body></html>";
* webview.loadData(summary, "text/html", null);
* // ... although note that there are restrictions on what this HTML can do.
* // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link
* #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info.
*
*
* A WebView has several customization points where you can add your * own behavior. These are:
* *Here's a more complicated example, showing error handling, * settings, and progress notification:
* *
* // 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://developer.android.com/");
*
*
* To enable the built-in zoom, set * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} * (introduced in API level {@link android.os.Build.VERSION_CODES#CUPCAKE}).
*NOTE: Using zoom if either the height or width is set to * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} may lead to undefined behavior * and should be avoided.
* *For obvious security reasons, your application has its own * cache, cookie store etc.—it does not share the Browser * application's data. *
* *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.
* *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 Handling Runtime Changes for * more information about how to handle configuration changes during runtime.
* * *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.
*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 {@link android.os.Build.VERSION_CODES#ECLAIR}, WebView supports DOM, CSS, * and meta tag features to help you (as a web developer) target screens with different screen * densities.
*Here's a summary of the features you can use to handle different screen densities:
** <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" />*
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.
*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. *
*/ // 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, ViewDebug.HierarchyHandler { /** * Broadcast Action: Indicates the data reduction proxy setting changed. * Sent by the settings app when user changes the data reduction proxy value. This intent will * always stay as a hidden API. * @hide */ @SystemApi public static final String DATA_REDUCTION_PROXY_SETTING_CHANGED = "android.webkit.DATA_REDUCTION_PROXY_SETTING_CHANGED"; private static final String LOGTAG = "WebView"; private static final boolean TRACE = false; // Throwing an exception for incorrect thread usage if the // build target is JB MR2 or newer. Defaults to false, and is // set in the WebView constructor. private static volatile boolean sEnforceThreadChecking = false; /** * Transportation object for returning WebView across thread boundaries. */ public class WebViewTransport { private WebView mWebview; /** * Sets the WebView to the transportation object. * * @param webview the WebView to transport */ public synchronized void setWebView(WebView webview) { mWebview = webview; } /** * Gets the WebView object. * * @return 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 find results. */ public interface FindListener { /** * Notifies the listener about progress made by a find operation. * * @param activeMatchOrdinal the zero-based ordinal of the currently selected match * @param numberOfMatches how many matches have been found * @param isDoneCounting whether the find operation has actually completed. The listener * may be notified multiple times while the * operation is underway, and the numberOfMatches * value should not be considered final unless * isDoneCounting is true. */ public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, boolean isDoneCounting); } /** * Interface to listen for new pictures as they change. * * @deprecated This interface is now obsolete. */ @Deprecated public interface PictureListener { /** * Used to provide notification that the WebView's picture has changed. * See {@link WebView#capturePicture} for details of the picture. * * @param view the WebView that owns the picture * @param picture the new picture. Applications targeting * {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2} or above * will always receive a null Picture. * @deprecated Deprecated due to internal changes. */ @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 */ @SystemApi public HitTestResult() { mType = UNKNOWN_TYPE; } /** * @hide Only for use by WebViewProvider implementations */ @SystemApi public void setType(int type) { mType = type; } /** * @hide Only for use by WebViewProvider implementations */ @SystemApi public void setExtra(String extra) { mExtra = extra; } /** * Gets the type of the hit test result. See the XXX_TYPE constants * defined in this class. * * @return the type of the hit test result */ public int getType() { return mType; } /** * Gets additional type-dependant information about the result. See * {@link WebView#getHitTestResult()} for details. May either be null * or contain extra information about this result. * * @return additional type-dependant information about the result */ public String getExtra() { return mExtra; } } /** * Constructs a new WebView with a Context object. * * @param context a Context object used to access application assets */ public WebView(Context context) { this(context, null); } /** * Constructs 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); } /** * Constructs 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 defStyleAttr an attribute in the current theme that contains a * reference to a style resource that supplies default values for * the view. Can be 0 to not look for defaults. */ public WebView(Context context, AttributeSet attrs, int defStyleAttr) { this(context, attrs, defStyleAttr, 0); } /** * Constructs 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 defStyleAttr an attribute in the current theme that contains a * reference to a style resource that supplies default values for * the view. Can be 0 to not look for defaults. * @param defStyleRes a resource identifier of a style resource that * supplies default values for the view, used only if * defStyleAttr is 0 or can not be found in the theme. Can be 0 * to not look for defaults. */ public WebView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { this(context, attrs, defStyleAttr, defStyleRes, null, false); } /** * Constructs 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 defStyleAttr an attribute in the current theme that contains a * reference to a style resource that supplies default values for * the view. Can be 0 to not look for defaults. * @param privateBrowsing whether this WebView will be initialized in * private mode * * @deprecated Private browsing is no longer supported directly via * WebView and will be removed in a future release. Prefer using * {@link WebSettings}, {@link WebViewDatabase}, {@link CookieManager} * and {@link WebStorage} for fine-grained control of privacy data. */ @Deprecated public WebView(Context context, AttributeSet attrs, int defStyleAttr, boolean privateBrowsing) { this(context, attrs, defStyleAttr, 0, null, privateBrowsing); } /** * Constructs a new WebView with layout parameters, a default style and a set * of custom Javscript interfaces to be added to this 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 defStyleAttr an attribute in the current theme that contains a * reference to a style resource that supplies default values for * the view. Can be 0 to not look for defaults. * @param javaScriptInterfaces a Map of interface names, as keys, and * object implementing those interfaces, as * values * @param privateBrowsing whether this WebView 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. */ protected WebView(Context context, AttributeSet attrs, int defStyleAttr, Map* 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. *
* The encoding parameter specifies whether the data is base64 or URL * encoded. If the data is base64 encoded, the value of the encoding * parameter must be 'base64'. For all other values of the parameter, * including null, it is assumed that the data uses 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. *
* 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(); if (TRACE) Log.d(LOGTAG, "loadData"); mProvider.loadData(data, mimeType, encoding); } /** * Loads the given data into this 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. *
* 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'. *
* 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, and the data will be treated as part of a data: URL.
* If the base URL uses any other scheme, then the data will be loaded into
* the WebView as a plain string (i.e. not part of a data URL) and any URL-encoded
* entities in the string will not be decoded.
*
* @param baseUrl the 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 the URL to use as the history entry. If null defaults
* to 'about:blank'. If non-null, this must be a valid URL.
*/
public void loadDataWithBaseURL(String baseUrl, String data,
String mimeType, String encoding, String historyUrl) {
checkThread();
if (TRACE) Log.d(LOGTAG, "loadDataWithBaseURL=" + baseUrl);
mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl);
}
/**
* Asynchronously evaluates JavaScript in the context of the currently displayed page.
* If non-null, |resultCallback| will be invoked with any result returned from that
* execution. This method must be called on the UI thread and the callback will
* be made on the UI thread.
*
* @param script the JavaScript to execute.
* @param resultCallback A callback to be invoked when the script execution
* completes with the result of the execution (if any).
* May be null if no notificaion of the result is required.
*/
public void evaluateJavascript(String script, ValueCallback
* Note that due to internal changes, for API levels between
* {@link android.os.Build.VERSION_CODES#HONEYCOMB} and
* {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH} inclusive, the
* picture does not include fixed position elements or scrollable divs.
*
* Note that from {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} the returned picture
* should only be drawn into bitmap-backed Canvas - using any other type of Canvas will involve
* additional conversion at a cost in memory and performance. Also the
* {@link android.graphics.Picture#createFromStream} and
* {@link android.graphics.Picture#writeToStream} methods are not supported on the
* returned object.
*
* @deprecated Use {@link #onDraw} to obtain a bitmap snapshot of the WebView, or
* {@link #saveWebArchive} to save the content to a file.
*
* @return a picture that captures the current contents of this WebView
*/
@Deprecated
public Picture capturePicture() {
checkThread();
if (TRACE) Log.d(LOGTAG, "capturePicture");
return mProvider.capturePicture();
}
/**
* @deprecated Use {@link #createPrintDocumentAdapter(String)} which requires user
* to provide a print document name.
*/
@Deprecated
public PrintDocumentAdapter createPrintDocumentAdapter() {
checkThread();
if (TRACE) Log.d(LOGTAG, "createPrintDocumentAdapter");
return mProvider.createPrintDocumentAdapter("default");
}
/**
* Creates a PrintDocumentAdapter that provides the content of this Webview for printing.
*
* The adapter works by converting the Webview contents to a PDF stream. The Webview cannot
* be drawn during the conversion process - any such draws are undefined. It is recommended
* to use a dedicated off screen Webview for the printing. If necessary, an application may
* temporarily hide a visible WebView by using a custom PrintDocumentAdapter instance
* wrapped around the object returned and observing the onStart and onFinish methods. See
* {@link android.print.PrintDocumentAdapter} for more information.
*
* @param documentName The user-facing name of the printed document. See
* {@link android.print.PrintDocumentInfo}
*/
public PrintDocumentAdapter createPrintDocumentAdapter(String documentName) {
checkThread();
if (TRACE) Log.d(LOGTAG, "createPrintDocumentAdapter");
return mProvider.createPrintDocumentAdapter(documentName);
}
/**
* Gets the current scale of this WebView.
*
* @return the current scale
*
* @deprecated This method is prone to inaccuracy due to race conditions
* between the web rendering and UI threads; prefer
* {@link WebViewClient#onScaleChanged}.
*/
@Deprecated
@ViewDebug.ExportedProperty(category = "webview")
public float getScale() {
checkThread();
return mProvider.getScale();
}
/**
* Sets the initial scale for this WebView. 0 means default.
* The behavior for the default scale depends on the state of
* {@link WebSettings#getUseWideViewPort()} and
* {@link WebSettings#getLoadWithOverviewMode()}.
* If the content fits into the WebView control by width, then
* the zoom is set to 100%. For wide content, the behavor
* depends on the state of {@link WebSettings#getLoadWithOverviewMode()}.
* If its value is true, the content will be zoomed out to be fit
* by width into the WebView control, otherwise not.
*
* 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();
if (TRACE) Log.d(LOGTAG, "setInitialScale=" + scaleInPercent);
mProvider.setInitialScale(scaleInPercent);
}
/**
* Invokes the graphical zoom picker widget for this WebView. This will
* result in the zoom widget appearing on the screen to control the zoom
* level of this WebView.
*/
public void invokeZoomPicker() {
checkThread();
if (TRACE) Log.d(LOGTAG, "invokeZoomPicker");
mProvider.invokeZoomPicker();
}
/**
* Gets 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();
if (TRACE) Log.d(LOGTAG, "getHitTestResult");
return mProvider.getHitTestResult();
}
/**
* Requests 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 the message to be dispatched with the result of the
* request. The message data contains three keys. "url"
* returns the anchor's href attribute. "title" returns the
* anchor's text. "src" returns the image's src attribute.
*/
public void requestFocusNodeHref(Message hrefMsg) {
checkThread();
if (TRACE) Log.d(LOGTAG, "requestFocusNodeHref");
mProvider.requestFocusNodeHref(hrefMsg);
}
/**
* Requests 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 the message to be dispatched with the result of the request
* as the data member with "url" as key. The result can be null.
*/
public void requestImageRef(Message msg) {
checkThread();
if (TRACE) Log.d(LOGTAG, "requestImageRef");
mProvider.requestImageRef(msg);
}
/**
* Gets 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
*/
@ViewDebug.ExportedProperty(category = "webview")
public String getUrl() {
checkThread();
return mProvider.getUrl();
}
/**
* Gets 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
*/
@ViewDebug.ExportedProperty(category = "webview")
public String getOriginalUrl() {
checkThread();
return mProvider.getOriginalUrl();
}
/**
* Gets 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
*/
@ViewDebug.ExportedProperty(category = "webview")
public String getTitle() {
checkThread();
return mProvider.getTitle();
}
/**
* Gets 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();
}
/**
* Gets the touch icon URL for the apple-touch-icon 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();
}
/**
* Gets the progress for the current page.
*
* @return the progress for the current page between 0 and 100
*/
public int getProgress() {
checkThread();
return mProvider.getProgress();
}
/**
* Gets the height of the HTML content.
*
* @return the height of the HTML content
*/
@ViewDebug.ExportedProperty(category = "webview")
public int getContentHeight() {
checkThread();
return mProvider.getContentHeight();
}
/**
* Gets the width of the HTML content.
*
* @return the width of the HTML content
* @hide
*/
@ViewDebug.ExportedProperty(category = "webview")
public int getContentWidth() {
return mProvider.getContentWidth();
}
/**
* Pauses 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();
if (TRACE) Log.d(LOGTAG, "pauseTimers");
mProvider.pauseTimers();
}
/**
* Resumes all layout, parsing, and JavaScript timers for all WebViews.
* This will resume dispatching all timers.
*/
public void resumeTimers() {
checkThread();
if (TRACE) Log.d(LOGTAG, "resumeTimers");
mProvider.resumeTimers();
}
/**
* Pauses any extra processing associated with this WebView and its
* associated DOM, plugins, JavaScript etc. For example, if this WebView is
* taken offscreen, this could be called to reduce unnecessary CPU or
* network traffic. When this WebView is again "active", call onResume().
* Note that this differs from pauseTimers(), which affects all WebViews.
*/
public void onPause() {
checkThread();
if (TRACE) Log.d(LOGTAG, "onPause");
mProvider.onPause();
}
/**
* Resumes a WebView after a previous call to onPause().
*/
public void onResume() {
checkThread();
if (TRACE) Log.d(LOGTAG, "onResume");
mProvider.onResume();
}
/**
* Gets whether this WebView is paused, meaning onPause() was called.
* Calling onResume() sets the paused state back to false.
*
* @hide
*/
public boolean isPaused() {
return mProvider.isPaused();
}
/**
* Informs this WebView that memory is low so that it can free any available
* memory.
* @deprecated Memory caches are automatically dropped when no longer needed, and in response
* to system memory pressure.
*/
@Deprecated
public void freeMemory() {
checkThread();
if (TRACE) Log.d(LOGTAG, "freeMemory");
mProvider.freeMemory();
}
/**
* Clears 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();
if (TRACE) Log.d(LOGTAG, "clearCache");
mProvider.clearCache(includeDiskFiles);
}
/**
* Removes the autocomplete popup from the currently focused form field, if
* present. Note this only affects the display of the autocomplete popup,
* it does not remove any saved form data from this WebView's store. To do
* that, use {@link WebViewDatabase#clearFormData}.
*/
public void clearFormData() {
checkThread();
if (TRACE) Log.d(LOGTAG, "clearFormData");
mProvider.clearFormData();
}
/**
* Tells this WebView to clear its internal back/forward list.
*/
public void clearHistory() {
checkThread();
if (TRACE) Log.d(LOGTAG, "clearHistory");
mProvider.clearHistory();
}
/**
* Clears the SSL preferences table stored in response to proceeding with
* SSL certificate errors.
*/
public void clearSslPreferences() {
checkThread();
if (TRACE) Log.d(LOGTAG, "clearSslPreferences");
mProvider.clearSslPreferences();
}
/**
* Clears the client certificate preferences stored in response
* to proceeding/cancelling client cert requests. Note that Webview
* automatically clears these preferences when it receives a
* {@link KeyChain#ACTION_STORAGE_CHANGED} intent. The preferences are
* shared by all the webviews that are created by the embedder application.
*
* @param onCleared A runnable to be invoked when client certs are cleared.
* The embedder can pass null if not interested in the
* callback. The runnable will be called in UI thread.
*/
public static void clearClientCertPreferences(Runnable onCleared) {
if (TRACE) Log.d(LOGTAG, "clearClientCertPreferences");
getFactory().getStatics().clearClientCertPreferences(onCleared);
}
/**
* Gets 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();
}
/**
* Registers the listener to be notified as find-on-page operations
* progress. This will replace the current listener.
*
* @param listener an implementation of {@link FindListener}
*/
public void setFindListener(FindListener listener) {
checkThread();
setupFindListenerIfNeeded();
mFindListener.mUserFindListener = listener;
}
/**
* Highlights and scrolls to the next match found by
* {@link #findAllAsync}, wrapping around page boundaries as necessary.
* Notifies any registered {@link FindListener}. If {@link #findAllAsync(String)}
* has not been called yet, or if {@link #clearMatches} has been called since the
* last find operation, this function does nothing.
*
* @param forward the direction to search
* @see #setFindListener
*/
public void findNext(boolean forward) {
checkThread();
if (TRACE) Log.d(LOGTAG, "findNext");
mProvider.findNext(forward);
}
/**
* Finds all instances of find on the page and highlights them.
* Notifies any registered {@link FindListener}.
*
* @param find the string to find
* @return the number of occurances of the String "find" that were found
* @deprecated {@link #findAllAsync} is preferred.
* @see #setFindListener
*/
@Deprecated
public int findAll(String find) {
checkThread();
if (TRACE) Log.d(LOGTAG, "findAll");
StrictMode.noteSlowCall("findAll blocks UI: prefer findAllAsync");
return mProvider.findAll(find);
}
/**
* Finds all instances of find on the page and highlights them,
* asynchronously. Notifies any registered {@link FindListener}.
* Successive calls to this will cancel any pending searches.
*
* @param find the string to find.
* @see #setFindListener
*/
public void findAllAsync(String find) {
checkThread();
if (TRACE) Log.d(LOGTAG, "findAllAsync");
mProvider.findAllAsync(find);
}
/**
* Starts 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 true if the find dialog is shown, false otherwise
* @deprecated This method does not work reliably on all Android versions;
* implementing a custom find dialog using WebView.findAllAsync()
* provides a more robust solution.
*/
@Deprecated
public boolean showFindDialog(String text, boolean showIme) {
checkThread();
if (TRACE) Log.d(LOGTAG, "showFindDialog");
return mProvider.showFindDialog(text, showIme);
}
/**
* Gets the first substring consisting of the address of a physical
* location. Currently, only addresses in the United States are detected,
* and consist of:
* Note that injected objects will not
* appear in JavaScript until the page is next (re)loaded. For example:
*
* IMPORTANT:
*
*
* 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, null
*/
public static String findAddress(String addr) {
// TODO: Rewrite this in Java so it is not needed to start up chromium
// Could also be deprecated
return getFactory().getStatics().findAddress(addr);
}
/**
* For apps targeting the L release, WebView has a new default behavior that reduces
* memory footprint and increases performance by intelligently choosing
* the portion of the HTML document that needs to be drawn. These
* optimizations are transparent to the developers. However, under certain
* circumstances, an App developer may want to disable them:
*
*
* Enabling drawing the entire HTML document has a significant performance
* cost. This method should be called before any WebViews are created.
*/
public static void enableSlowWholeDocumentDraw() {
getFactory().getStatics().enableSlowWholeDocumentDraw();
}
/**
* Clears the highlighting surrounding text matches created by
* {@link #findAllAsync}.
*/
public void clearMatches() {
checkThread();
if (TRACE) Log.d(LOGTAG, "clearMatches");
mProvider.clearMatches();
}
/**
* Queries 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);
}
/**
* Sets 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);
}
/**
* Registers 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);
}
/**
* Sets 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);
}
/**
* Sets 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();
if (TRACE) Log.d(LOGTAG, "setPictureListener=" + listener);
mProvider.setPictureListener(listener);
}
/**
* Injects the supplied Java object into this WebView. The object is
* injected into the JavaScript context of the main frame, using the
* supplied name. This allows the Java object's methods to be
* accessed from JavaScript. For applications targeted to API
* level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
* and above, only public methods that are annotated with
* {@link android.webkit.JavascriptInterface} can be accessed from JavaScript.
* For applications targeted to API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} or below,
* all public methods (including the inherited ones) can be accessed, see the
* important security note below for implications.
*
* class JsObject {
* {@literal @}JavascriptInterface
* public String toString() { return "injectedObject"; }
* }
* webView.addJavascriptInterface(new JsObject(), "injectedObject");
* webView.loadData("
*
*
*
* @param object the Java object to inject into this WebView's JavaScript
* context. Null values are ignored.
* @param name the name used to expose the object in JavaScript
*/
public void addJavascriptInterface(Object object, String name) {
checkThread();
if (TRACE) Log.d(LOGTAG, "addJavascriptInterface=" + name);
mProvider.addJavascriptInterface(object, name);
}
/**
* Removes a previously injected Java object from this WebView. Note that
* the removal will not be reflected in JavaScript until the page is next
* (re)loaded. See {@link #addJavascriptInterface}.
*
* @param name the name used to expose the object in JavaScript
*/
public void removeJavascriptInterface(String name) {
checkThread();
if (TRACE) Log.d(LOGTAG, "removeJavascriptInterface=" + name);
mProvider.removeJavascriptInterface(name);
}
/**
* Gets 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();
}
/**
* Enables debugging of web contents (HTML / CSS / JavaScript)
* loaded into any WebViews of this application. This flag can be enabled
* in order to facilitate debugging of web layouts and JavaScript
* code running inside WebViews. Please refer to WebView documentation
* for the debugging guide.
*
* The default is false.
*
* @param enabled whether to enable web contents debugging
*/
public static void setWebContentsDebuggingEnabled(boolean enabled) {
getFactory().getStatics().setWebContentsDebuggingEnabled(enabled);
}
/**
* Gets the list of currently loaded plugins.
*
* @return the list of currently loaded plugins
* @deprecated This was used for Gears, which has been deprecated.
* @hide
*/
@Deprecated
public static synchronized PluginList getPluginList() {
return new PluginList();
}
/**
* @deprecated This was used for Gears, which has been deprecated.
* @hide
*/
@Deprecated
public void refreshPlugins(boolean reloadOpenPages) {
checkThread();
}
/**
* Puts this WebView into text selection mode. Do not rely on this
* functionality; it will be deprecated in the future.
*
* @deprecated This method is now obsolete.
* @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
*/
@Deprecated
public void emulateShiftHeld() {
checkThread();
}
/**
* @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) {
}
/**
* @deprecated Only the default case, true, will be supported in a future version.
*/
@Deprecated
public void setMapTrackballToArrowKeys(boolean setMap) {
checkThread();
mProvider.setMapTrackballToArrowKeys(setMap);
}
public void flingScroll(int vx, int vy) {
checkThread();
if (TRACE) Log.d(LOGTAG, "flingScroll");
mProvider.flingScroll(vx, vy);
}
/**
* Gets the zoom controls for this WebView, as a separate View. The caller
* is responsible for inserting this View into the layout hierarchy.
*
* API level {@link android.os.Build.VERSION_CODES#CUPCAKE} introduced
* built-in zoom mechanisms for the WebView, as opposed to these separate
* zoom controls. The built-in mechanisms are preferred and can be enabled
* using {@link WebSettings#setBuiltInZoomControls}.
*
* @deprecated the built-in zoom mechanisms are preferred
* @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN}
*/
@Deprecated
public View getZoomControls() {
checkThread();
return mProvider.getZoomControls();
}
/**
* Gets whether this WebView can be zoomed in.
*
* @return true if this WebView can be zoomed in
*
* @deprecated This method is prone to inaccuracy due to race conditions
* between the web rendering and UI threads; prefer
* {@link WebViewClient#onScaleChanged}.
*/
@Deprecated
public boolean canZoomIn() {
checkThread();
return mProvider.canZoomIn();
}
/**
* Gets whether this WebView can be zoomed out.
*
* @return true if this WebView can be zoomed out
*
* @deprecated This method is prone to inaccuracy due to race conditions
* between the web rendering and UI threads; prefer
* {@link WebViewClient#onScaleChanged}.
*/
@Deprecated
public boolean canZoomOut() {
checkThread();
return mProvider.canZoomOut();
}
/**
* Performs a zoom operation in this WebView.
*
* @param zoomFactor the zoom factor to apply. The zoom factor will be clamped to the Webview's
* zoom limits. This value must be in the range 0.01 to 100.0 inclusive.
*/
public void zoomBy(float zoomFactor) {
checkThread();
if (zoomFactor < 0.01)
throw new IllegalArgumentException("zoomFactor must be greater than 0.01.");
if (zoomFactor > 100.0)
throw new IllegalArgumentException("zoomFactor must be less than 100.");
mProvider.zoomBy(zoomFactor);
}
/**
* Performs zoom in in this WebView.
*
* @return true if zoom in succeeds, false if no zoom changes
*/
public boolean zoomIn() {
checkThread();
return mProvider.zoomIn();
}
/**
* Performs zoom out in this 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.
* @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
*/
@Deprecated
public void debugDump() {
checkThread();
}
/**
* See {@link ViewDebug.HierarchyHandler#dumpViewHierarchyWithProperties(BufferedWriter, int)}
* @hide
*/
@Override
public void dumpViewHierarchyWithProperties(BufferedWriter out, int level) {
mProvider.dumpViewHierarchyWithProperties(out, level);
}
/**
* See {@link ViewDebug.HierarchyHandler#findHierarchyView(String, int)}
* @hide
*/
@Override
public View findHierarchyView(String className, int hashCode) {
return mProvider.findHierarchyView(className, hashCode);
}
//-------------------------------------------------------------------------
// Interface for WebView providers
//-------------------------------------------------------------------------
/**
* Gets the WebViewProvider. Used by providers to obtain the underlying
* implementation, e.g. when the appliction responds to
* WebViewClient.onCreateWindow() request.
*
* @hide WebViewProvider is not public API.
*/
@SystemApi
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
*/
@SystemApi
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_onHoverEvent(MotionEvent event) {
return WebView.super.onHoverEvent(event);
}
public boolean super_performAccessibilityAction(int action, Bundle arguments) {
return WebView.super.performAccessibilityAction(action, arguments);
}
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();
}
public void super_onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar,
int l, int t, int r, int b) {
WebView.super.onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b);
}
// ---- 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;
}
}
//-------------------------------------------------------------------------
// Package-private internal stuff
//-------------------------------------------------------------------------
// Only used by android.webkit.FindActionModeCallback.
void setFindDialogFindListener(FindListener listener) {
checkThread();
setupFindListenerIfNeeded();
mFindListener.mFindDialogFindListener = listener;
}
// Only used by android.webkit.FindActionModeCallback.
void notifyFindDialogDismissed() {
checkThread();
mProvider.notifyFindDialogDismissed();
}
//-------------------------------------------------------------------------
// Private internal stuff
//-------------------------------------------------------------------------
private WebViewProvider mProvider;
/**
* In addition to the FindListener that the user may set via the WebView.setFindListener
* API, FindActionModeCallback will register it's own FindListener. We keep them separate
* via this class so that that the two FindListeners can potentially exist at once.
*/
private class FindListenerDistributor implements FindListener {
private FindListener mFindDialogFindListener;
private FindListener mUserFindListener;
@Override
public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches,
boolean isDoneCounting) {
if (mFindDialogFindListener != null) {
mFindDialogFindListener.onFindResultReceived(activeMatchOrdinal, numberOfMatches,
isDoneCounting);
}
if (mUserFindListener != null) {
mUserFindListener.onFindResultReceived(activeMatchOrdinal, numberOfMatches,
isDoneCounting);
}
}
}
private FindListenerDistributor mFindListener;
private void setupFindListenerIfNeeded() {
if (mFindListener == null) {
mFindListener = new FindListenerDistributor();
mProvider.setFindListener(mFindListener);
}
}
private void ensureProviderCreated() {
checkThread();
if (mProvider == null) {
// 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() {
return WebViewFactory.getProvider();
}
private final Looper mWebViewThread = Looper.myLooper();
private void checkThread() {
// Ignore mWebViewThread == null because this can be called during in the super class
// constructor, before this class's own constructor has even started.
if (mWebViewThread != null && Looper.myLooper() != mWebViewThread) {
Throwable throwable = new Throwable(
"A WebView method was called on thread '" +
Thread.currentThread().getName() + "'. " +
"All WebView methods must be called on the same thread. " +
"(Expected Looper " + mWebViewThread + " called on " + Looper.myLooper() +
", FYI main Looper is " + Looper.getMainLooper() + ")");
Log.w(LOGTAG, Log.getStackTraceString(throwable));
StrictMode.onWebViewMethodCalledOnWrongThread(throwable);
if (sEnforceThreadChecking) {
throw new RuntimeException(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();
}
/** @hide */
@Override
protected void onDetachedFromWindowInternal() {
mProvider.getViewDelegate().onDetachedFromWindow();
super.onDetachedFromWindowInternal();
}
@Override
public void setLayoutParams(ViewGroup.LayoutParams params) {
mProvider.getViewDelegate().setLayoutParams(params);
}
@Override
public void setOverScrollMode(int mode) {
super.setOverScrollMode(mode);
// This method may be called in the constructor chain, before the WebView provider is
// created.
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);
}
*/
@Override
public AccessibilityNodeProvider getAccessibilityNodeProvider() {
AccessibilityNodeProvider provider =
mProvider.getViewDelegate().getAccessibilityNodeProvider();
return provider == null ? super.getAccessibilityNodeProvider() : provider;
}
@Deprecated
@Override
public boolean shouldDelayChildPressedState() {
return mProvider.getViewDelegate().shouldDelayChildPressedState();
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setClassName(WebView.class.getName());
mProvider.getViewDelegate().onInitializeAccessibilityNodeInfo(info);
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
event.setClassName(WebView.class.getName());
mProvider.getViewDelegate().onInitializeAccessibilityEvent(event);
}
@Override
public boolean performAccessibilityAction(int action, Bundle arguments) {
return mProvider.getViewDelegate().performAccessibilityAction(action, arguments);
}
/** @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 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);
// This method may be called in the constructor chain, before the WebView provider is
// created.
ensureProviderCreated();
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);
}
@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);
}
@Override
protected void dispatchDraw(Canvas canvas) {
mProvider.getViewDelegate().preDispatchDraw(canvas);
super.dispatchDraw(canvas);
}
@Override
public void onStartTemporaryDetach() {
super.onStartTemporaryDetach();
mProvider.getViewDelegate().onStartTemporaryDetach();
}
@Override
public void onFinishTemporaryDetach() {
super.onFinishTemporaryDetach();
mProvider.getViewDelegate().onFinishTemporaryDetach();
}
}