/* * 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 DocumentEventQueue_h #define DocumentEventQueue_h #include "EventQueue.h" #include <wtf/Forward.h> #include <wtf/HashSet.h> #include <wtf/ListHashSet.h> #include <wtf/OwnPtr.h> #include <wtf/RefCounted.h> #include <wtf/RefPtr.h> namespace WebCore { class Event; class DocumentEventQueueTimer; class Node; class ScriptExecutionContext; class DocumentEventQueue : public RefCounted<DocumentEventQueue>, public EventQueue { public: enum ScrollEventTargetType { ScrollEventDocumentTarget, ScrollEventElementTarget }; static PassRefPtr<DocumentEventQueue> create(ScriptExecutionContext*); virtual ~DocumentEventQueue(); // EventQueue virtual bool enqueueEvent(PassRefPtr<Event>) OVERRIDE; virtual bool cancelEvent(Event*) OVERRIDE; virtual void close() OVERRIDE; void enqueueOrDispatchScrollEvent(PassRefPtr<Node>, ScrollEventTargetType); private: explicit DocumentEventQueue(ScriptExecutionContext*); void pendingEventTimerFired(); void dispatchEvent(PassRefPtr<Event>); OwnPtr<DocumentEventQueueTimer> m_pendingEventTimer; ListHashSet<RefPtr<Event>, 16> m_queuedEvents; HashSet<Node*> m_nodesWithQueuedScrollEvents; bool m_isClosed; friend class DocumentEventQueueTimer; }; } #endif // DocumentEventQueue_h