third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * in the documentation and/or other materials provided with the
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#ifndef WebEmbeddedWorkerImpl_h
#define WebEmbeddedWorkerImpl_h

#include "core/workers/WorkerLoaderProxy.h"

#include "public/web/WebContentSecurityPolicy.h"
#include "public/web/WebDevToolsAgentClient.h"
#include "public/web/WebEmbeddedWorker.h"
#include "public/web/WebEmbeddedWorkerStartData.h"
#include "public/web/WebFrameClient.h"

namespace blink {

class ServiceWorkerGlobalScopeProxy;
class WebLocalFrameImpl;
class WebServiceWorkerNetworkProvider;
class WebView;
class WorkerInspectorProxy;
class WorkerScriptLoader;
class WorkerThread;

class WebEmbeddedWorkerImpl final
    : public WebEmbeddedWorker
    , public WebFrameClient
    , public WebDevToolsAgentClient
    , private WorkerLoaderProxyProvider {
    WTF_MAKE_NONCOPYABLE(WebEmbeddedWorkerImpl);
public:
    WebEmbeddedWorkerImpl(PassOwnPtr<WebServiceWorkerContextClient>, PassOwnPtr<WebWorkerContentSettingsClientProxy>);
    ~WebEmbeddedWorkerImpl() override;

    // WebEmbeddedWorker overrides.
    void startWorkerContext(const WebEmbeddedWorkerStartData&) override;
    void terminateWorkerContext() override;
    void attachDevTools(const WebString& hostId, int sessionId) override;
    void reattachDevTools(const WebString& hostId, int sessionId, const WebString& savedState) override;
    void detachDevTools() override;
    void dispatchDevToolsMessage(int sessionId, const WebString&) override;

    void postMessageToPageInspector(const WTF::String&);

private:
    void prepareShadowPageForLoader();
    void loadShadowPage();

    // WebFrameClient overrides.
    void willSendRequest(
        WebLocalFrame*, unsigned identifier, WebURLRequest&,
        const WebURLResponse& redirectResponse) override;
    void didFinishDocumentLoad(WebLocalFrame*, bool documentIsEmpty) override;

    // WebDevToolsAgentClient overrides.
    void sendProtocolMessage(int sessionId, int callId, const WebString&, const WebString&) override;
    void resumeStartup() override;

    void onScriptLoaderFinished();
    void startWorkerThread();

    // WorkerLoaderProxyProvider
    void postTaskToLoader(PassOwnPtr<ExecutionContextTask>) override;
    bool postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask>) override;

    WebEmbeddedWorkerStartData m_workerStartData;

    OwnPtr<WebServiceWorkerContextClient> m_workerContextClient;

    // This is kept until startWorkerContext is called, and then passed on
    // to WorkerContext.
    OwnPtr<WebWorkerContentSettingsClientProxy> m_contentSettingsClient;

    // 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.
    RefPtr<WorkerScriptLoader> m_mainScriptLoader;

    RefPtr<WorkerThread> m_workerThread;
    RefPtr<WorkerLoaderProxy> m_loaderProxy;
    OwnPtrWillBePersistent<ServiceWorkerGlobalScopeProxy> m_workerGlobalScopeProxy;
    OwnPtrWillBePersistent<WorkerInspectorProxy> m_workerInspectorProxy;

    // '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;
    RefPtrWillBePersistent<WebLocalFrameImpl> m_mainFrame;

    bool m_loadingShadowPage;
    bool m_askedToTerminate;

    enum WaitingForDebuggerState {
        WaitingForDebuggerBeforeLoadingScript,
        WaitingForDebuggerAfterScriptLoaded,
        NotWaitingForDebugger
    };

    WaitingForDebuggerState m_waitingForDebuggerState;
};

} // namespace blink

#endif // WebEmbeddedWorkerImpl_h