1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 #ifndef ContextLifecycleObserver_h 28 #define ContextLifecycleObserver_h 29 30 #include "platform/LifecycleContext.h" 31 32 namespace blink { 33 34 class ExecutionContext; 35 36 template<> void observerContext(ExecutionContext*, LifecycleObserver<ExecutionContext>*); 37 template<> void unobserverContext(ExecutionContext*, LifecycleObserver<ExecutionContext>*); 38 39 class ContextLifecycleObserver : public LifecycleObserver<ExecutionContext> { 40 public: 41 explicit ContextLifecycleObserver(ExecutionContext*, Type = GenericType); executionContext()42 ExecutionContext* executionContext() const { return lifecycleContext(); } 43 protected: 44 virtual ~ContextLifecycleObserver(); 45 }; 46 47 } // namespace blink 48 49 #endif // ContextLifecycleObserver_h 50