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/*
* Copyright (C) 2010 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 EventQueue_h
#define EventQueue_h
#include "Timer.h"
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class Event;
class Node;
class EventQueue {
WTF_MAKE_NONCOPYABLE(EventQueue);
public:
enum ScrollEventTargetType {
ScrollEventDocumentTarget,
ScrollEventElementTarget
};
EventQueue();
void enqueueEvent(PassRefPtr<Event>);
void enqueueScrollEvent(PassRefPtr<Node>, ScrollEventTargetType);
private:
void pendingEventTimerFired(Timer<EventQueue>*);
void dispatchEvent(PassRefPtr<Event>);
Timer<EventQueue> m_pendingEventTimer;
Vector<RefPtr<Event> > m_queuedEvents;
HashSet<Node*> m_nodesWithQueuedScrollEvents;
};
}
#endif // EventQueue_h
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