1/*
2 * Copyright (C) 2010 Google 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 WorkerEventQueue_h
28#define WorkerEventQueue_h
29
30#include "core/events/EventQueue.h"
31#include "wtf/HashMap.h"
32#include "wtf/HashSet.h"
33#include "wtf/PassOwnPtr.h"
34#include "wtf/RefCounted.h"
35
36namespace blink {
37
38class Event;
39class Node;
40class ExecutionContext;
41
42class WorkerEventQueue FINAL : public EventQueue {
43    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
44public:
45
46    static PassOwnPtrWillBeRawPtr<WorkerEventQueue> create(ExecutionContext*);
47    virtual ~WorkerEventQueue();
48    void trace(Visitor*);
49
50    // EventQueue
51    virtual bool enqueueEvent(PassRefPtrWillBeRawPtr<Event>) OVERRIDE;
52    virtual bool cancelEvent(Event*) OVERRIDE;
53    virtual void close() OVERRIDE;
54
55private:
56    explicit WorkerEventQueue(ExecutionContext*);
57    void removeEvent(Event*);
58
59    RawPtrWillBeMember<ExecutionContext> m_executionContext;
60    bool m_isClosed;
61
62    class EventDispatcherTask;
63    typedef WillBeHeapHashMap<RefPtrWillBeMember<Event>, EventDispatcherTask*> EventTaskMap;
64    EventTaskMap m_eventTaskMap;
65};
66
67}
68
69#endif // WorkerEventQueue_h
70