1/*
2 * Copyright (C) 2012 Victor Carbune (victor@rosedu.org)
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 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 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#pragma once
27
28#include "GenericTaskQueue.h"
29#include <wtf/Deque.h>
30#include <wtf/Forward.h>
31#include <wtf/RefPtr.h>
32
33namespace WebCore {
34
35class Event;
36class EventTarget;
37class Timer;
38
39class GenericEventQueue {
40 WTF_MAKE_FAST_ALLOCATED;
41public:
42 explicit GenericEventQueue(EventTarget&);
43 ~GenericEventQueue();
44
45 void enqueueEvent(RefPtr<Event>&&);
46 void close();
47
48 void cancelAllEvents();
49 bool hasPendingEvents() const;
50 bool hasPendingEventsOfType(const AtomicString&) const;
51
52 void suspend();
53 void resume();
54
55private:
56 void dispatchOneEvent();
57
58 EventTarget& m_owner;
59 GenericTaskQueue<Timer> m_taskQueue;
60 Deque<RefPtr<Event>> m_pendingEvents;
61 bool m_isClosed;
62 bool m_isSuspended { false };
63};
64
65} // namespace WebCore
66