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 WaitUntilObserver_h 6 #define WaitUntilObserver_h 7 8 #include "core/dom/ContextLifecycleObserver.h" 9 #include "modules/serviceworkers/ServiceWorkerGlobalScopeClient.h" 10 #include "wtf/Forward.h" 11 #include "wtf/RefCounted.h" 12 13 namespace blink { 14 15 class ExecutionContext; 16 class ScriptState; 17 class ScriptValue; 18 19 // Created for each ExtendableEvent instance. 20 class WaitUntilObserver FINAL : public GarbageCollectedFinalized<WaitUntilObserver>, public ContextLifecycleObserver { 21 public: 22 enum EventType { 23 Activate, 24 Install 25 }; 26 27 static WaitUntilObserver* create(ExecutionContext*, EventType, int eventID); 28 29 // Must be called before and after dispatching the event. 30 void willDispatchEvent(); 31 void didDispatchEvent(); 32 33 // Observes the promise and delays calling the continuation until 34 // the given promise is resolved or rejected. 35 void waitUntil(ScriptState*, const ScriptValue&); 36 37 void trace(Visitor*) { } 38 39 private: 40 class ThenFunction; 41 42 WaitUntilObserver(ExecutionContext*, EventType, int eventID); 43 44 void reportError(const ScriptValue&); 45 46 void incrementPendingActivity(); 47 void decrementPendingActivity(); 48 49 EventType m_type; 50 int m_eventID; 51 int m_pendingActivity; 52 bool m_hasError; 53 }; 54 55 } // namespace blink 56 57 #endif // WaitUntilObserver_h 58
