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MControlOutputPort.h

/*

    This file is part of la Marmite.
    Copyright (C) 2005 Nicolas Falquet.

    La Marmite 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.

    La Marmite 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 la Marmite ; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307  USA

*/

#ifndef M_CONTROL_OUTPUT_PORT_H
#define M_CONTROL_OUTPUT_PORT_H

using namespace std;

#include "MPort.h"

#include <vector>

class MControlInputPort;

class MControlOutputPort /* abstract */ : public MPort
{

  Q_OBJECT

public :

  // destructor

  virtual ~ MControlOutputPort ( ) { }

  // functions

  virtual bool IsAudio ( ) const
    {
      return false;
    }

  virtual bool IsControl ( ) const
    {
      return true;
    }

  virtual bool IsInput ( ) const
    {
      return false;
    }

  virtual bool IsOutput ( ) const
    {
      return true;
    }

  virtual bool IsConnectedTo ( const MPort * port ) const;

  virtual unsigned int NumberOfConnections ( ) const;

  virtual MPort * Connection ( const unsigned int n ) const;
  // on devrait pouvoir mettre MControlInputPort * en retour
  // mais ca conflicte sans trop que je pige ( cf. doc )

public slots :

  virtual bool Connect ( MControlInputPort * port ) = 0;

  virtual bool Disconnect ( MControlInputPort * port ) = 0;

protected :

  // protected constructor

  MControlOutputPort ( string name, MModule * module )
    : MPort ( name, module ) { }

  // attributes

  vector < MControlInputPort * > _connection;

};

#endif // M_CONTROL_OUTPUT_PORT_H

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