1/* 2 * Copyright (C) 2007 Apple 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 * 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 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#ifndef WindowMessageBroadcaster_h 30#define WindowMessageBroadcaster_h 31 32#include <wtf/HashMap.h> 33#include <wtf/HashSet.h> 34#include <wtf/Noncopyable.h> 35 36namespace WebCore { 37 38 class WindowMessageListener; 39 40 class WindowMessageBroadcaster { 41 WTF_MAKE_NONCOPYABLE(WindowMessageBroadcaster); 42 public: 43 static void addListener(HWND, WindowMessageListener*); 44 static void removeListener(HWND, WindowMessageListener*); 45 46 private: 47 typedef HashSet<WindowMessageListener*> ListenerSet; 48 49 static LRESULT CALLBACK SubclassedWndProc(HWND, UINT, WPARAM, LPARAM); 50 51 WindowMessageBroadcaster(HWND); 52 ~WindowMessageBroadcaster(); 53 54 void addListener(WindowMessageListener*); 55 void removeListener(WindowMessageListener*); 56 const ListenerSet& listeners() const { return m_listeners; } 57 58 void destroy(); 59 void unsubclassWindow(); 60 61 WNDPROC originalWndProc() const { return m_originalWndProc; } 62 63 HWND m_subclassedWindow; 64 WNDPROC m_originalWndProc; 65 ListenerSet m_listeners; 66 }; 67 68} // namespace WebCore 69 70#endif // WindowMessageBroadcaster_h 71