1 /* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WorkerObjectProxy_h 32 #define WorkerObjectProxy_h 33 34 #include "core/dom/MessagePort.h" 35 #include "core/workers/WorkerReportingProxy.h" 36 #include "wtf/PassOwnPtr.h" 37 #include "wtf/PassRefPtr.h" 38 39 namespace WebCore { 40 41 class ExecutionContext; 42 class ExecutionContextTask; 43 class WorkerMessagingProxy; 44 45 // A proxy to talk to the worker object. This object is created on the 46 // worker object thread (i.e. usually the main thread), passed on to 47 // the worker thread, and used just to proxy messages to the 48 // WorkerMessagingProxy on the worker object thread. 49 // 50 // Used only by Dedicated Worker. 51 class WorkerObjectProxy FINAL : public WorkerReportingProxy { 52 public: 53 static PassOwnPtr<WorkerObjectProxy> create(ExecutionContext*, WorkerMessagingProxy*); ~WorkerObjectProxy()54 virtual ~WorkerObjectProxy() { } 55 56 void postMessageToWorkerObject(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>); 57 void postTaskToMainExecutionContext(PassOwnPtr<ExecutionContextTask>); 58 void confirmMessageFromWorkerObject(bool hasPendingActivity); 59 void reportPendingActivity(bool hasPendingActivity); 60 61 // WorkerReportingProxy overrides. 62 virtual void reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL) OVERRIDE; 63 virtual void reportConsoleMessage(MessageSource, MessageLevel, const String& message, int lineNumber, const String& sourceURL) OVERRIDE; 64 virtual void postMessageToPageInspector(const String&) OVERRIDE; 65 virtual void updateInspectorStateCookie(const String&) OVERRIDE; workerGlobalScopeStarted(WorkerGlobalScope *)66 virtual void workerGlobalScopeStarted(WorkerGlobalScope*) OVERRIDE { } 67 virtual void workerGlobalScopeClosed() OVERRIDE; 68 virtual void workerGlobalScopeDestroyed() OVERRIDE; willDestroyWorkerGlobalScope()69 virtual void willDestroyWorkerGlobalScope() OVERRIDE { } 70 71 private: 72 WorkerObjectProxy(ExecutionContext*, WorkerMessagingProxy*); 73 74 // These objects always outlive this proxy. 75 ExecutionContext* m_executionContext; 76 WorkerMessagingProxy* m_messagingProxy; 77 }; 78 79 } // namespace WebCore 80 81 #endif // WorkerObjectProxy_h 82