/*

 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.

 * Copyright (C) 2009 Torch Mobile 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.

 */

#include "config.h"

#include "MainThread.h"

#include "Assertions.h"

#include "Threading.h"

#if !OS(WINCE)

#include <windows.h>

#endif

namespace WTF {

static HWND threadingWindowHandle;

static UINT threadingFiredMessage;

const LPCWSTR kThreadingWindowClassName = L"ThreadingWindowClass";

LRESULT CALLBACK ThreadingWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

{

    if (message == threadingFiredMessage)

        dispatchFunctionsFromMainThread();

    else

        return DefWindowProc(hWnd, message, wParam, lParam);

    return 0;

}

void initializeMainThreadPlatform()

{

    if (threadingWindowHandle)

        return;

    HWND hWndParent = 0;

#if OS(WINCE)

    WNDCLASS wcex;

    memset(&wcex, 0, sizeof(WNDCLASS));

#else

    WNDCLASSEX wcex;

    memset(&wcex, 0, sizeof(WNDCLASSEX));

    wcex.cbSize = sizeof(WNDCLASSEX);

#endif

    wcex.lpfnWndProc    = ThreadingWindowWndProc;

    wcex.lpszClassName  = kThreadingWindowClassName;

#if OS(WINCE)

    RegisterClass(&wcex);

#else

    RegisterClassEx(&wcex);

    hWndParent = HWND_MESSAGE;

#endif

    threadingWindowHandle = CreateWindow(kThreadingWindowClassName, 0, 0,

       CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, hWndParent, 0, 0, 0);

    threadingFiredMessage = RegisterWindowMessage(L"com.apple.WebKit.MainThreadFired");

    initializeCurrentThreadInternal("Main Thread");

}

void scheduleDispatchFunctionsOnMainThread()

{

    ASSERT(threadingWindowHandle);

    PostMessage(threadingWindowHandle, threadingFiredMessage, 0, 0);

}

} // namespace WTF