1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef RespondWithObserver_h 6 #define RespondWithObserver_h 7 8 #include "core/dom/ContextLifecycleObserver.h" 9 #include "wtf/Forward.h" 10 #include "wtf/RefCounted.h" 11 12 namespace WebCore { 13 14 class ExecutionContext; 15 class Response; 16 class ScriptState; 17 class ScriptValue; 18 19 // This class observes the service worker's handling of a FetchEvent and 20 // notifies the client. 21 class RespondWithObserver FINAL : public ContextLifecycleObserver, public RefCounted<RespondWithObserver> { 22 public: 23 static PassRefPtr<RespondWithObserver> create(ExecutionContext*, int eventID); 24 ~RespondWithObserver(); 25 26 virtual void contextDestroyed() OVERRIDE; 27 28 void didDispatchEvent(); 29 30 // Observes the promise and delays calling didHandleFetchEvent() until the 31 // given promise is resolved or rejected. 32 void respondWith(ScriptState*, const ScriptValue&); 33 34 void responseWasRejected(); 35 void responseWasFulfilled(const ScriptValue&); 36 37 private: 38 class ThenFunction; 39 40 RespondWithObserver(ExecutionContext*, int eventID); 41 42 // Sends a response back to the client. The null response means to fallback 43 // to native. 44 void sendResponse(PassRefPtr<Response>); 45 46 int m_eventID; 47 48 enum State { Initial, Pending, Done }; 49 State m_state; 50 }; 51 52 } // namespace WebCore 53 54 #endif // RespondWithObserver_h 55
