2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.xwalk.core;
19 import android.app.Activity;
20 import android.content.Context;
21 import android.content.pm.ActivityInfo;
22 import android.graphics.Bitmap;
23 import android.net.Uri;
24 import android.os.Message;
25 import android.view.Gravity;
26 import android.view.View;
27 import android.view.ViewGroup;
28 import android.webkit.WebStorage;
29 import android.webkit.ConsoleMessage;
30 import android.webkit.ValueCallback;
31 import android.widget.FrameLayout;
34 * It's an internal legacy class which is to handle kinds of ui related
35 * callback functions. It only handles those which are not exposed to
36 * external users compared to XWalkUIClient.
38 public class XWalkWebChromeClient {
39 private Context mContext;
40 private View mCustomXWalkView;
41 private XWalkView mXWalkView;
42 private XWalkWebChromeClient.CustomViewCallback mCustomViewCallback;
43 private XWalkContentsClient mContentsClient = null;
44 private long XWALK_MAX_QUOTA = 1024 * 1024 * 100;
46 public XWalkWebChromeClient(Context context, XWalkView view) {
51 void setContentsClient(XWalkContentsClient client) {
52 mContentsClient = client;
56 * Notify the host application of a change in the document title.
57 * @param view The XWalkView that initiated the callback.
58 * @param title A String containing the new title of the document.
60 public void onReceivedTitle(XWalkView view, String title) {}
63 * Notify the host application of a new favicon for the current page.
64 * @param view The XWalkView that initiated the callback.
65 * @param icon A Bitmap containing the favicon for the current page.
67 public void onReceivedIcon(XWalkView view, Bitmap icon) {}
70 * Notify the host application of the url for an apple-touch-icon.
71 * @param view The XWalkView that initiated the callback.
72 * @param url The icon url.
73 * @param precomposed True if the url is for a precomposed touch icon.
75 public void onReceivedTouchIconUrl(XWalkView view, String url,
76 boolean precomposed) {}
79 * A callback interface used by the host application to notify
80 * the current page that its custom view has been dismissed.
82 public interface CustomViewCallback {
84 * Invoked when the host application dismisses the
87 public void onCustomViewHidden();
91 * Notify the host application that the current page would
92 * like to show a custom View.
93 * @param view is the View object to be shown.
94 * @param callback is the callback to be invoked if and when the view
97 public void onShowCustomView(View view, CustomViewCallback callback) {
98 Activity activity = mXWalkView.getActivity();
100 if (mCustomXWalkView != null || activity == null) {
101 callback.onCustomViewHidden();
105 mCustomXWalkView = view;
106 mCustomViewCallback = callback;
108 if (mContentsClient != null) {
109 mContentsClient.onToggleFullscreen(true);
112 // Add the video view to the activity's ContentView.
113 activity.getWindow().addContentView(view,
114 new FrameLayout.LayoutParams(
115 ViewGroup.LayoutParams.MATCH_PARENT,
116 ViewGroup.LayoutParams.MATCH_PARENT,
121 * Notify the host application that the current page would
122 * like to show a custom View in a particular orientation.
123 * @param view is the View object to be shown.
124 * @param requestedOrientation An orientation constant as used in
125 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
126 * @param callback is the callback to be invoked if and when the view
129 public void onShowCustomView(View view, int requestedOrientation,
130 CustomViewCallback callback) {};
133 * Notify the host application that the current page would
134 * like to hide its custom view.
136 public void onHideCustomView() {
137 Activity activity = mXWalkView.getActivity();
139 if (mCustomXWalkView == null || activity == null) return;
141 if (mContentsClient != null) {
142 mContentsClient.onToggleFullscreen(true);
145 // Remove video view from activity's ContentView.
146 FrameLayout decor = (FrameLayout) activity.getWindow().getDecorView();
147 decor.removeView(mCustomXWalkView);
148 mCustomViewCallback.onCustomViewHidden();
150 mCustomXWalkView = null;
151 mCustomViewCallback = null;
155 * Request the host application to create a new window. If the host
156 * application chooses to honor this request, it should return true from
157 * this method, create a new XWalkView to host the window, insert it into the
158 * View system and send the supplied resultMsg message to its target with
159 * the new XWalkView as an argument. If the host application chooses not to
160 * honor the request, it should return false from this method. The default
161 * implementation of this method does nothing and hence returns false.
162 * @param view The XWalkView from which the request for a new window
164 * @param isDialog True if the new window should be a dialog, rather than
165 * a full-size window.
166 * @param isUserGesture True if the request was initiated by a user gesture,
167 * such as the user clicking a link.
168 * @param resultMsg The message to send when once a new XWalkView has been
169 * created. resultMsg.obj is a
170 * {@link XWalkView.XWalkViewTransport} object. This should be
171 * used to transport the new XWalkView, by calling
172 * {@link XWalkView.XWalkViewTransport#setXWalkView(XWalkView)
173 * XWalkView.XWalkViewTransport.setXWalkView(XWalkView)}.
174 * @return This method should return true if the host application will
175 * create a new window, in which case resultMsg should be sent to
176 * its target. Otherwise, this method should return false. Returning
177 * false from this method but also sending resultMsg will result in
178 * undefined behavior.
180 public boolean onCreateWindow(XWalkView view, boolean isDialog,
181 boolean isUserGesture, Message resultMsg) {
186 * Tell the client that the quota has been exceeded for the Web SQL Database
187 * API for a particular origin and request a new quota. The client must
188 * respond by invoking the
189 * {@link WebStorage.QuotaUpdater#updateQuota(long) updateQuota(long)}
190 * method of the supplied {@link WebStorage.QuotaUpdater} instance. The
191 * minimum value that can be set for the new quota is the current quota. The
192 * default implementation responds with the current quota, so the quota will
194 * @param url The URL of the page that triggered the notification
195 * @param databaseIdentifier The identifier of the database where the quota
197 * @param quota The quota for the origin, in bytes
198 * @param estimatedDatabaseSize The estimated size of the offending
200 * @param totalQuota The total quota for all origins, in bytes
201 * @param quotaUpdater An instance of {@link WebStorage.QuotaUpdater} which
202 * must be used to inform the XWalkView of the new quota.
204 // Note that the callback must always be executed at some point to ensure
205 // that the sleeping WebCore thread is woken up.
206 // Since the parameter type WebStorage.QuotaUpdater and this API are
207 // deprecated in Android 4.4, while this parameter type and this API
208 // are still used before Android 4.4, no other API and parameter are
209 // to replace them, suppress the compiling warnings for Android 4.4
210 // due to deprecation.
211 @SuppressWarnings("deprecation")
212 public void onExceededDatabaseQuota(String url, String databaseIdentifier,
213 long quota, long estimatedDatabaseSize, long totalQuota,
214 WebStorage.QuotaUpdater quotaUpdater) {
215 // This default implementation passes the current quota back to WebCore.
216 // WebCore will interpret this that new quota was declined.
217 quotaUpdater.updateQuota(XWALK_MAX_QUOTA);
221 * Tell the client that the quota has been reached for the Application Cache
222 * API and request a new quota. The client must respond by invoking the
223 * {@link WebStorage.QuotaUpdater#updateQuota(long) updateQuota(long)}
224 * method of the supplied {@link WebStorage.QuotaUpdater} instance. The
225 * minimum value that can be set for the new quota is the current quota. The
226 * default implementation responds with the current quota, so the quota will
228 * @param requiredStorage The amount of storage required by the Application
229 * Cache operation that triggered this notification,
231 * @param quota The quota, in bytes
232 * @param quotaUpdater An instance of {@link WebStorage.QuotaUpdater} which
233 * must be used to inform the XWalkView of the new quota.
235 // Note that the callback must always be executed at some point to ensure
236 // that the sleeping WebCore thread is woken up.
237 // Since the parameter type WebStorage.QuotaUpdater and this API are
238 // deprecated in Android 4.4, while this parameter type and this API
239 // are still used before Android 4.4, no other API and parameter are
240 // to replace them, suppress the compiling warnings for Android 4.4
241 // due to deprecation.
242 @SuppressWarnings("deprecation")
243 public void onReachedMaxAppCacheSize(long requiredStorage, long quota,
244 WebStorage.QuotaUpdater quotaUpdater) {
245 quotaUpdater.updateQuota(XWALK_MAX_QUOTA);
249 * Notify the host application that web content from the specified origin
250 * is attempting to use the Geolocation API, but no permission state is
251 * currently set for that origin. The host application should invoke the
252 * specified callback with the desired permission state. See
253 * {@link GeolocationPermissions} for details.
254 * @param origin The origin of the web content attempting to use the
256 * @param callback The callback to use to set the permission state for the
259 public void onGeolocationPermissionsShowPrompt(String origin,
260 XWalkGeolocationPermissions.Callback callback) {
261 // Allow all origins for geolocation requests here for Crosswalk.
262 // TODO(yongsheng): Need to define a UI prompt?
263 callback.invoke(origin, true, false);
267 * Notify the host application that a request for Geolocation permissions,
268 * made with a previous call to
269 * {@link #onGeolocationPermissionsShowPrompt(String,GeolocationPermissions.Callback) onGeolocationPermissionsShowPrompt()}
270 * has been canceled. Any related UI should therefore be hidden.
272 public void onGeolocationPermissionsHidePrompt() {}
275 * Tell the client that a JavaScript execution timeout has occured. And the
276 * client may decide whether or not to interrupt the execution. If the
277 * client returns true, the JavaScript will be interrupted. If the client
278 * returns false, the execution will continue. Note that in the case of
279 * continuing execution, the timeout counter will be reset, and the callback
280 * will continue to occur if the script does not finish at the next check
282 * @return boolean Whether the JavaScript execution should be interrupted.
284 public boolean onJsTimeout() {
289 * Report a JavaScript error message to the host application. The ChromeClient
290 * should override this to process the log message as they see fit.
291 * @param message The error message to report.
292 * @param lineNumber The line number of the error.
293 * @param sourceID The name of the source file that caused the error.
294 * @deprecated Use {@link #onConsoleMessage(ConsoleMessage) onConsoleMessage(ConsoleMessage)}
298 public void onConsoleMessage(String message, int lineNumber, String sourceID) { }
301 * Report a JavaScript console message to the host application. The ChromeClient
302 * should override this to process the log message as they see fit.
303 * @param consoleMessage Object containing details of the console message.
304 * @return true if the message is handled by the client.
306 public boolean onConsoleMessage(ConsoleMessage consoleMessage) {
307 // Call the old version of this function for backwards compatability.
308 onConsoleMessage(consoleMessage.message(), consoleMessage.lineNumber(),
309 consoleMessage.sourceId());
314 * When not playing, video elements are represented by a 'poster' image. The
315 * image to use can be specified by the poster attribute of the video tag in
316 * HTML. If the attribute is absent, then a default poster will be used. This
317 * method allows the ChromeClient to provide that default image.
319 * @return Bitmap The image to use as a default poster, or null if no such image is
322 public Bitmap getDefaultVideoPoster() {
327 * When the user starts to playback a video element, it may take time for enough
328 * data to be buffered before the first frames can be rendered. While this buffering
329 * is taking place, the ChromeClient can use this function to provide a View to be
330 * displayed. For example, the ChromeClient could show a spinner animation.
332 * @return View The View to be displayed whilst the video is loading.
334 public View getVideoLoadingProgressView() {
338 /** Obtains a list of all visited history items, used for link coloring
340 public void getVisitedHistory(ValueCallback<String[]> callback) {
344 * Tell the client that the page being viewed is web app capable,
345 * i.e. has specified the fullscreen-web-app-capable meta tag.
348 public void setInstallableWebApp() { }
351 * Tell the client that the page being viewed has an autofillable
352 * form and the user would like to set a profile up.
353 * @param msg A Message to send once the user has successfully
354 * set up a profile and to inform the WebTextView it should
355 * now autofill using that new profile.
358 public void setupAutoFill(Message msg) { }