diff -r 000000000000 -r 4f2f89ce4247 WebKit/chromium/src/WebWorkerClientImpl.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WebKit/chromium/src/WebWorkerClientImpl.h Fri Sep 17 09:02:29 2010 +0300 @@ -0,0 +1,164 @@ +/* + * Copyright (C) 2009 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef WebWorkerClientImpl_h +#define WebWorkerClientImpl_h + +#if ENABLE(WORKERS) + +#include "WebWorkerClient.h" + +#include "WorkerContextProxy.h" +#include +#include + +namespace WebCore { +class ScriptExecutionContext; +} + +namespace WebKit { +class WebWorker; + +// The purpose of this class is to provide a WorkerContextProxy +// implementation that we can give to WebKit. Internally, it converts the +// data types to Chrome compatible ones so that renderer code can use it over +// IPC. +class WebWorkerClientImpl : public WebCore::WorkerContextProxy + , public WebWorkerClient { +public: + WebWorkerClientImpl(WebCore::Worker*); + + // WebCore::WorkerContextProxy Factory. + static WebCore::WorkerContextProxy* createWorkerContextProxy(WebCore::Worker*); + void setWebWorker(WebWorker*); + + // WebCore::WorkerContextProxy methods: + // These are called on the thread that created the worker. In the renderer + // process, this will be the main WebKit thread. In the worker process, this + // will be the thread of the executing worker (not the main WebKit thread). + virtual void startWorkerContext(const WebCore::KURL&, + const WebCore::String&, + const WebCore::String&); + virtual void terminateWorkerContext(); + virtual void postMessageToWorkerContext( + PassRefPtr message, + PassOwnPtr channels); + virtual bool hasPendingActivity() const; + virtual void workerObjectDestroyed(); + + // WebWorkerClient methods: + // These are called on the main WebKit thread. + virtual void postMessageToWorkerObject(const WebString&, const WebMessagePortChannelArray&); + virtual void postExceptionToWorkerObject(const WebString&, int, const WebString&); + + // FIXME: the below is for compatibility only and should be + // removed once Chromium is updated to remove message + // destination parameter . + virtual void postConsoleMessageToWorkerObject(int, int, int, int, const WebString&, int, const WebString&); + virtual void postConsoleMessageToWorkerObject(int, int, int, const WebString&, int, const WebString&); + virtual void confirmMessageFromWorkerObject(bool); + virtual void reportPendingActivity(bool); + virtual void workerContextClosed(); + virtual void workerContextDestroyed(); + virtual WebWorker* createWorker(WebWorkerClient*) { return 0; } + virtual WebNotificationPresenter* notificationPresenter() + { + // FIXME: Notifications not yet supported in workers. + return 0; + } + virtual WebApplicationCacheHost* createApplicationCacheHost(WebApplicationCacheHostClient*) { return 0; } + virtual bool allowDatabase(WebFrame*, const WebString& name, const WebString& displayName, unsigned long estimatedSize) + { + ASSERT_NOT_REACHED(); + return true; + } + +private: + virtual ~WebWorkerClientImpl(); + + // Methods used to support WebWorkerClientImpl being constructed on worker + // threads. + // These tasks are dispatched on the WebKit thread. + static void startWorkerContextTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr, + const WebCore::String& scriptURL, + const WebCore::String& userAgent, + const WebCore::String& sourceCode); + static void terminateWorkerContextTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr); + static void postMessageToWorkerContextTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr, + const WebCore::String& message, + PassOwnPtr channels); + static void workerObjectDestroyedTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr); + + // These tasks are dispatched on the thread that created the worker (i.e. + // main WebKit thread in renderer process, and the worker thread in the + // worker process). + static void postMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr, + const WebCore::String& message, + PassOwnPtr channels); + static void postExceptionToWorkerObjectTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr, + const WebCore::String& message, + int lineNumber, + const WebCore::String& sourceURL); + static void postConsoleMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr, + int sourceId, + int messageType, + int messageLevel, + const WebCore::String& message, + int lineNumber, + const WebCore::String& sourceURL); + static void confirmMessageFromWorkerObjectTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr); + static void reportPendingActivityTask(WebCore::ScriptExecutionContext* context, + WebWorkerClientImpl* thisPtr, + bool hasPendingActivity); + + // Guard against context from being destroyed before a worker exits. + RefPtr m_scriptExecutionContext; + + WebCore::Worker* m_worker; + WebWorker* m_webWorker; + bool m_askedToTerminate; + unsigned m_unconfirmedMessageCount; + bool m_workerContextHadPendingActivity; + ThreadIdentifier m_workerThreadId; +}; + +} // namespace WebKit; + +#endif // ENABLE(WORKERS) + +#endif