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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
#if ENABLE(WORKERS)
#include "WebWorkerClient.h"
#include "WorkerContextProxy.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
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 WTF::String&,
const WTF::String&);
virtual void terminateWorkerContext();
virtual void postMessageToWorkerContext(
PassRefPtr<WebCore::SerializedScriptValue> message,
PassOwnPtr<WebCore::MessagePortChannelArray> 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 <http://webkit.org/b/37155>.
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 WTF::String& scriptURL,
const WTF::String& userAgent,
const WTF::String& sourceCode);
static void terminateWorkerContextTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr);
static void postMessageToWorkerContextTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
const WTF::String& message,
PassOwnPtr<WebCore::MessagePortChannelArray> 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 WTF::String& message,
PassOwnPtr<WebCore::MessagePortChannelArray> channels);
static void postExceptionToWorkerObjectTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
const WTF::String& message,
int lineNumber,
const WTF::String& sourceURL);
static void postConsoleMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* thisPtr,
int sourceId,
int messageType,
int messageLevel,
const WTF::String& message,
int lineNumber,
const WTF::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<WebCore::ScriptExecutionContext> 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
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