fsm.hpp

/*****************************************************************************
 * fsm.hpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id: fsm.hpp 12053 2005-08-06 23:38:31Z asmax $
 *
 * Authors: Cyril Deguet     <[email protected]>
 *          Olivier Teulière <[email protected]>
 *
 * 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, USA.
 *****************************************************************************/

#ifndef FSM_HPP
#define FSM_HPP

#include "../src/skin_common.hpp"
#include <string>
#include <map>
#include <set>

class EvtGeneric;
class CmdGeneric;


class FSM: public SkinObject
{
    public:
        FSM( intf_thread_t *pIntf ): SkinObject( pIntf ) {}
        virtual ~FSM() {}

        void addState( const string &state );

        void addTransition( const string &state1, const string &event,
                            const string &state2,
                            CmdGeneric *pCmd = NULL );

        const string &getState() const { return m_currentState; }

        void setState( const string &state );

        void handleTransition( const string &event );

    private:
        typedef pair<string, string> Key_t;

        typedef pair<string, CmdGeneric*> Data_t;

        string m_currentState;

        set<string> m_states;

        map<Key_t, Data_t> m_transitions;
};


#endif

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