1/*
2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2008 Collabora, Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef PluginMessageThrottlerWin_h
28#define PluginMessageThrottlerWin_h
29
30#include "Timer.h"
31
32#include <windows.h>
33
34namespace WebCore {
35    class PluginView;
36
37    struct PluginMessage {
38        HWND hWnd;
39        UINT msg;
40        WPARAM wParam;
41        LPARAM lParam;
42
43        struct PluginMessage* next;
44    };
45
46    class PluginMessageThrottlerWin {
47    public:
48        PluginMessageThrottlerWin(PluginView*);
49        ~PluginMessageThrottlerWin();
50
51        void appendMessage(HWND, UINT msg, WPARAM, LPARAM);
52
53    private:
54        void processQueuedMessage();
55        void messageThrottleTimerFired(Timer<PluginMessageThrottlerWin>*);
56        PluginMessage* allocateMessage();
57        bool isInlineMessage(PluginMessage* message);
58        void freeMessage(PluginMessage* message);
59
60        PluginView* m_pluginView;
61        PluginMessage* m_back;
62        PluginMessage* m_front;
63
64        static const int NumInlineMessages = 4;
65        PluginMessage m_inlineMessages[NumInlineMessages];
66        PluginMessage* m_freeInlineMessages;
67
68        Timer<PluginMessageThrottlerWin> m_messageThrottleTimer;
69        double m_lastMessageTime;
70    };
71
72} // namespace WebCore
73
74#endif // PluginMessageThrottlerWin_h
75