Source/web/WebEmbeddedWorkerImpl.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
 *     * 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
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef WebEmbeddedWorkerImpl_h
#define WebEmbeddedWorkerImpl_h

#include "WebContentSecurityPolicy.h"
#include "WebEmbeddedWorker.h"
#include "WebEmbeddedWorkerStartData.h"
#include "WebFrameClient.h"

namespace WebCore {
class WorkerScriptLoader;
class WorkerThread;
}

namespace blink {

class ServiceWorkerGlobalScopeProxy;
class WebServiceWorkerNetworkProvider;
class WebView;

class WebEmbeddedWorkerImpl FINAL :
    public WebEmbeddedWorker,
    public WebFrameClient {
    WTF_MAKE_NONCOPYABLE(WebEmbeddedWorkerImpl);
public:
    WebEmbeddedWorkerImpl(
        PassOwnPtr<WebServiceWorkerContextClient>,
        PassOwnPtr<WebWorkerPermissionClientProxy>);
    virtual ~WebEmbeddedWorkerImpl();

    // WebEmbeddedWorker overrides.
    virtual void startWorkerContext(const WebEmbeddedWorkerStartData&) OVERRIDE;
    virtual void terminateWorkerContext() OVERRIDE;

private:
    class Loader;
    class LoaderProxy;

    void prepareShadowPageForLoader();

    // WebFrameClient overrides.
    virtual void willSendRequest(
        WebFrame*, unsigned identifier, WebURLRequest&,
        const WebURLResponse& redirectResponse) OVERRIDE;
    virtual void didFinishDocumentLoad(WebFrame*) OVERRIDE;

    void onScriptLoaderFinished();

    WebEmbeddedWorkerStartData m_workerStartData;

    // These are kept until startWorkerContext is called, and then passed on
    // to WorkerContext.
    OwnPtr<WebServiceWorkerContextClient> m_workerContextClient;
    OwnPtr<WebWorkerPermissionClientProxy> m_permissionClient;

    // We retain ownership of this one which is for use on the
    // main thread only.
    OwnPtr<WebServiceWorkerNetworkProvider> m_networkProvider;

    // Kept around only while main script loading is ongoing.
    OwnPtr<Loader> m_mainScriptLoader;

    RefPtr<WebCore::WorkerThread> m_workerThread;
    OwnPtr<LoaderProxy> m_loaderProxy;
    OwnPtr<ServiceWorkerGlobalScopeProxy> m_workerGlobalScopeProxy;

    // 'shadow page' - created to proxy loading requests from the worker.
    // Both WebView and WebFrame objects are close()'ed (where they're
    // deref'ed) when this EmbeddedWorkerImpl is destructed, therefore they
    // are guaranteed to exist while this object is around.
    WebView* m_webView;
    WebFrame* m_mainFrame;

    bool m_askedToTerminate;
};

} // namespace blink

#endif // WebEmbeddedWorkerImpl_h