Source/core/workers/WorkerObjectProxy.h

/*
 * 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.
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 * 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
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#ifndef WorkerObjectProxy_h
#define WorkerObjectProxy_h

#include "core/dom/MessagePort.h"
#include "core/workers/WorkerReportingProxy.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"

namespace blink {

class ConsoleMessage;
class ExecutionContext;
class ExecutionContextTask;
class WorkerMessagingProxy;

// A proxy to talk to the worker object. This object is created on the
// worker object thread (i.e. usually the main thread), passed on to
// the worker thread, and used just to proxy messages to the
// WorkerMessagingProxy on the worker object thread.
//
// Used only by Dedicated Worker.
class WorkerObjectProxy FINAL : public WorkerReportingProxy {
public:
    static PassOwnPtr<WorkerObjectProxy> create(ExecutionContext*, WorkerMessagingProxy*);
    virtual ~WorkerObjectProxy() { }

    void postMessageToWorkerObject(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>);
    void postTaskToMainExecutionContext(PassOwnPtr<ExecutionContextTask>);
    void confirmMessageFromWorkerObject(bool hasPendingActivity);
    void reportPendingActivity(bool hasPendingActivity);

    // WorkerReportingProxy overrides.
    virtual void reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL) OVERRIDE;
    virtual void reportConsoleMessage(PassRefPtrWillBeRawPtr<ConsoleMessage>) OVERRIDE;
    virtual void postMessageToPageInspector(const String&) OVERRIDE;
    virtual void updateInspectorStateCookie(const String&) OVERRIDE;
    virtual void workerGlobalScopeStarted(WorkerGlobalScope*) OVERRIDE { }
    virtual void workerGlobalScopeClosed() OVERRIDE;
    virtual void workerThreadTerminated() OVERRIDE;
    virtual void willDestroyWorkerGlobalScope() OVERRIDE { }

private:
    WorkerObjectProxy(ExecutionContext*, WorkerMessagingProxy*);

    // These objects always outlive this proxy.
    ExecutionContext* m_executionContext;
    WorkerMessagingProxy* m_messagingProxy;
};

} // namespace blink

#endif // WorkerObjectProxy_h