kis_canvas_observer.h

/*
 *  Copyright (c) 2003 Patrick Julien <freak@codepimps.org>
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
#ifndef KIS_CANVAS_OBSERVER_H_
#define KIS_CANVAS_OBSERVER_H_
 
class KisCanvasSubject;

class KisCanvasObserver {
public:
    KisCanvasObserver() {};
    virtual ~KisCanvasObserver() {};
 
public:
    virtual void update(KisCanvasSubject *subject) = 0;
 
private:
    KisCanvasObserver(const KisCanvasObserver&);
    KisCanvasObserver& operator=(const KisCanvasObserver&);
};
 
#endif // KIS_CANVAS_OBSERVER_H_