1 // Copyright 2015 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 package org.chromium.chrome.browser.document; 6 7 import org.chromium.base.BuildInfo; 8 import org.chromium.base.annotations.NativeMethods; 9 import org.chromium.components.embedder_support.delegate.WebContentsDelegateAndroid; 10 import org.chromium.content_public.browser.WebContents; 11 12 /** 13 * Stubs out calls to the WebContentsDelegateAndroid. Attaching a WebContentsDelegateAndroid to a 14 * newly created WebContents signals to Chrome that it was created properly, which is needed in 15 * situations where Chrome on Android needs to create the Activity for the WebContents 16 * asynchronously. 17 */ 18 public class DocumentWebContentsDelegate extends WebContentsDelegateAndroid { 19 /** 20 * Singleton instance of the WebContentsDelegate. Delegates can be assigned to multiple 21 * WebContents. 22 */ 23 private static DocumentWebContentsDelegate sInstance; 24 25 /** 26 * Native side pointer to the stubbed WebContentsDelegate. 27 */ 28 private long mNativePtr; 29 30 /** 31 * @return The Singleton instance, creating it if necessary. 32 */ getInstance()33 public static DocumentWebContentsDelegate getInstance() { 34 if (sInstance == null) sInstance = new DocumentWebContentsDelegate(); 35 return sInstance; 36 } 37 38 /** 39 * Attaches the native side delegate to the native WebContents. 40 * @param webContents The {@link WebContents} to attach to. 41 */ attachDelegate(WebContents webContents)42 public void attachDelegate(WebContents webContents) { 43 DocumentWebContentsDelegateJni.get().attachContents( 44 mNativePtr, DocumentWebContentsDelegate.this, webContents); 45 } 46 DocumentWebContentsDelegate()47 private DocumentWebContentsDelegate() { 48 mNativePtr = 49 DocumentWebContentsDelegateJni.get().initialize(DocumentWebContentsDelegate.this); 50 } 51 52 @Override addMessageToConsole(int level, String message, int lineNumber, String sourceId)53 public boolean addMessageToConsole(int level, String message, int lineNumber, String sourceId) { 54 // Only output console.log messages on debug variants of Android OS. crbug/869804 55 return !BuildInfo.isDebugAndroid(); 56 } 57 58 @NativeMethods 59 interface Natives { initialize(DocumentWebContentsDelegate caller)60 long initialize(DocumentWebContentsDelegate caller); attachContents(long nativeDocumentWebContentsDelegate, DocumentWebContentsDelegate caller, WebContents webContents)61 void attachContents(long nativeDocumentWebContentsDelegate, 62 DocumentWebContentsDelegate caller, WebContents webContents); 63 } 64 } 65