Signal.hxx

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/*
 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __SIGNAL__
#define __SIGNAL__

#include <utility>
#include <map>
#include <stack>

namespace SigSlot
{

        class Connection;

        class Signal
        {
        public:
                typedef std::stack< unsigned >      tConnectionIdStack;
                typedef unsigned  tConnectionId;
  
                virtual ~Signal();
 
                virtual void FreeConnection( Connection* conn ) = 0;
  
        protected:
                void FreeConnectionId( tConnectionId );
                tConnectionId AssignConnection();
  
        protected:
  
                static tConnectionId       smLastConnectionId;
        };

}

#endif // Signal.hxx