vpiface.h

/*
    QSapecNG - Qt based SapecNG GUI front-end
    Copyright (C) 2009, Michele Caini

    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 3 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, see <http://www.gnu.org/licenses/>.
*/


#ifndef VPIFACE_H
#define VPIFACE_H


namespace qsapecng
{


class ValuePropagationInterface
{

public:
  virtual int propagate(int value) = 0;
  virtual void invalidate() = 0;

};


}


#endif // VPIFACE_H