1 2 /* 3 * Copyright (C) 2013 Google Inc. All Rights Reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef PageLifecycleObserver_h 28 #define PageLifecycleObserver_h 29 30 #include "platform/LifecycleObserver.h" 31 32 namespace WebCore { 33 34 class Frame; 35 class Page; 36 37 template<> void observerContext(Page*, LifecycleObserver<Page>*); 38 template<> void unobserverContext(Page*, LifecycleObserver<Page>*); 39 40 class PageLifecycleObserver : public LifecycleObserver<Page> { 41 public: 42 explicit PageLifecycleObserver(Page*); 43 virtual ~PageLifecycleObserver(); 44 45 Page* page() const; 46 pageVisibilityChanged()47 virtual void pageVisibilityChanged() { } didCommitLoad(Frame *)48 virtual void didCommitLoad(Frame*) { } 49 }; 50 51 } // namespace WebCore 52 53 #endif // PageLifecycleObserver_h 54