dispatcher.h

/* Copyright (c) 2006-2009, Stefan Eilemann <eile@equalizergraphics.com> 
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef EQNET_DISPATCHER_H
#define EQNET_DISPATCHER_H

#include <eq/net/commandFunc.h> // member

#include <eq/base/base.h>

#include <vector>

namespace eq
{
namespace net
{
    class Connection;
    class Command;
    class CommandQueue;
    enum  CommandResult;

    class Dispatcher
    {
    public:
        EQ_EXPORT Dispatcher();
        EQ_EXPORT Dispatcher( const Dispatcher& from );
        EQ_EXPORT virtual ~Dispatcher();

        const Dispatcher& operator = ( const Dispatcher& ) { return *this; }

        EQ_EXPORT virtual bool dispatchCommand( Command& command );

        EQ_EXPORT virtual CommandResult invokeCommand( Command& command );
 
    protected:
        template< typename T >
        void registerCommand( const uint32_t command, 
                              const CommandFunc< T >& func,
                              CommandQueue* destinationQueue );

        
        CommandResult _cmdUnknown( Command& command );

    private:
        EQ_EXPORT void _registerCommand( const uint32_t command, 
                                         const CommandFunc< Dispatcher >& func,
                                         CommandQueue* destinationQueue );

        std::vector< CommandFunc< Dispatcher > > _vTable;
        
        std::vector< CommandQueue* >       _qTable;
    };

    template< typename T >
    void Dispatcher::registerCommand( const uint32_t command,
                                const CommandFunc< T >& func,
                                CommandQueue* destinationQueue )
    {
        _registerCommand( command, CommandFunc< Dispatcher >( func ),
                          destinationQueue );
    }
}
}

#endif // EQNET_DISPATCHER_H