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 34 namespace 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