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/*
* Copyright (C) 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WindowMessageBroadcaster_h
#define WindowMessageBroadcaster_h
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
namespace WebCore {
class WindowMessageListener;
class WindowMessageBroadcaster : public Noncopyable {
public:
static void addListener(HWND, WindowMessageListener*);
static void removeListener(HWND, WindowMessageListener*);
private:
typedef HashSet<WindowMessageListener*> ListenerSet;
static LRESULT CALLBACK SubclassedWndProc(HWND, UINT, WPARAM, LPARAM);
WindowMessageBroadcaster(HWND);
~WindowMessageBroadcaster();
void addListener(WindowMessageListener*);
void removeListener(WindowMessageListener*);
const ListenerSet& listeners() const { return m_listeners; }
void destroy();
void unsubclassWindow();
WNDPROC originalWndProc() const { return m_originalWndProc; }
HWND m_subclassedWindow;
WNDPROC m_originalWndProc;
ListenerSet m_listeners;
};
} // namespace WebCore
#endif // WindowMessageBroadcaster_h
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