/* Copyright (C) 2014
 * swift project community / contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
 * including this file, may be copied, modified, propagated, or distributed except according to the terms
 * contained in the LICENSE file.
 */

#ifndef BLACKSIMPLUGIN_FS9_CALLBACK_WRAPPER_H
#define BLACKSIMPLUGIN_FS9_CALLBACK_WRAPPER_H

#include <QObject>
#include <QPointer>
#include <dplay8.h>
#include <functional>

namespace BlackSimPlugin
{
    namespace Fs9
    {
        //! Template, wrapping the C-style DirectPlay handler callback to a class member
        template <class Object, class ReturnType, class Argument1, class Argument2>
        struct CallbackWrapper
        {
            //! Typedef to a MemberFunction
            typedef ReturnType (Object::*MemberFunction)(Argument1, Argument2);

            //! Constructor
            CallbackWrapper(Object *obj, MemberFunction memberFunction) :
                m_object(obj), m_memberFunction(memberFunction)
            {}

            //! FS9 message handler callback
            static ReturnType WINAPI messageHandler(void *userContext, Argument1 arg1, Argument2 arg2)
            {
                CallbackWrapper *_this = static_cast<CallbackWrapper *>(userContext);
                Object *obj = _this->m_object;
                MemberFunction func = _this->m_memberFunction;
                ReturnType result = (obj->*func)(arg1, arg2);
                return result;
            }

        private:

            QPointer<Object> m_object;
            MemberFunction m_memberFunction;
        };
    }
}

#endif // guard