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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
* Copyright (C) 2013 Google Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef LifecycleNotifier_h
#define LifecycleNotifier_h
#include "core/platform/LifecycleObserver.h"
#include "wtf/HashSet.h"
#include "wtf/PassOwnPtr.h"
namespace WebCore {
class LifecycleContext;
class LifecycleObserver;
class LifecycleNotifier {
public:
static PassOwnPtr<LifecycleNotifier> create(LifecycleContext*);
virtual ~LifecycleNotifier();
virtual void addObserver(LifecycleObserver*, LifecycleObserver::Type);
virtual void removeObserver(LifecycleObserver*, LifecycleObserver::Type);
protected:
explicit LifecycleNotifier(LifecycleContext*);
LifecycleContext* context();
enum IterationType {
IteratingNone,
IteratingOverActiveDOMObjects,
IteratingOverContextObservers,
IteratingOverDocumentObservers,
IteratingOverPageObservers
};
IterationType m_iterating;
private:
typedef HashSet<LifecycleObserver*> ObserverSet;
ObserverSet m_observers;
LifecycleContext* m_context;
bool m_inDestructor;
};
inline PassOwnPtr<LifecycleNotifier> LifecycleNotifier::create(LifecycleContext* context)
{
return adoptPtr(new LifecycleNotifier(context));
}
} // namespace WebCore
#endif // LifecycleNotifier_h
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