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/*
* 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
#include "core/dom/ExecutionContext.h"
#include "core/workers/WorkerGlobalScopeProxy.h"
#include "core/workers/WorkerLoaderProxy.h"
#include "core/workers/WorkerMessagingProxy.h"
#include "core/workers/WorkerObjectProxy.h"
#include "WebWorkerBase.h"
#include "public/platform/WebFileSystem.h"
#include "public/platform/WebFileSystemType.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefPtr.h"
namespace WebKit {
class WebWorker;
class WebFrameImpl;
// This class provides chromium implementation for WorkerGlobalScopeProxy, WorkerObjectProxy amd WorkerLoaderProxy
// for in-proc dedicated workers. It also acts as a bridge for workers to chromium implementation of file systems,
// databases and other related functionality.
//
// In essence, this class decorates WorkerMessagingProxy.
//
// It is imperative that this class inherit from WorkerMessagingProxy rather than delegate to an instance of
// WorkerMessagingProxy, because that class tracks and reports its activity to outside callers, and manages
// its own lifetime, via calls to workerObjectDestroyed, workerGlobalScopeDestroyed, workerGlobalScopeClosed, etc. It
// is basically impossible to correctly manage the lifetime of this class separately from WorkerMessagingProxy.
class WebWorkerClientImpl : public WebCore::WorkerMessagingProxy
, public WebWorkerBase
, public WebCommonWorkerClient {
public:
// WebCore::WorkerGlobalScopeProxy Factory.
static WebCore::WorkerGlobalScopeProxy* createWorkerGlobalScopeProxy(WebCore::Worker*);
// WebCore::WorkerGlobalScopeProxy methods:
// These are called on the thread that created the worker. In the renderer
// process, this will be the main WebKit thread.
virtual void terminateWorkerGlobalScope() OVERRIDE;
// WebCore::WorkerLoaderProxy methods
virtual WebWorkerBase* toWebWorkerBase() OVERRIDE;
// WebWorkerBase methods:
virtual WebCore::WorkerLoaderProxy* workerLoaderProxy() OVERRIDE { return this; }
virtual WebCommonWorkerClient* commonClient() OVERRIDE { return this; }
virtual WebView* view() const OVERRIDE;
// WebCommonWorkerClient methods:
virtual bool allowDatabase(WebFrame*, const WebString& name, const WebString& displayName, unsigned long estimatedSize) OVERRIDE;
virtual bool allowFileSystem();
virtual bool allowIndexedDB(const WebString& name) OVERRIDE;
private:
WebWorkerClientImpl(WebCore::Worker*, WebFrameImpl*, PassOwnPtr<WebCore::WorkerClients>);
virtual ~WebWorkerClientImpl();
WebFrameImpl* m_webFrame;
};
} // namespace WebKit;
#endif
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