00001
00002 /***************************************************************************
00003  *  nothing.h - Header of a filter that does nothing. Wonderful, isn't it.
00004  *              Used in FilterFactory to avoid NULL checks
00005  *
00006  *  Created: Fri Jun 17 13:28:21 2005
00007  *  Copyright  2005-2007  Tim Niemueller [www.niemueller.de]
00008  *
00009  ****************************************************************************/
00010
00011 /*  This program is free software; you can redistribute it and/or modify
00012  *  it under the terms of the GNU General Public License as published by
00013  *  the Free Software Foundation; either version 2 of the License, or
00014  *  (at your option) any later version. A runtime exception applies to
00015  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00016  *
00017  *  This program is distributed in the hope that it will be useful,
00018  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00019  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00020  *  GNU Library General Public License for more details.
00021  *
00022  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00023  */
00024
00025 #ifndef __FIREVISION_FILTER_NOTHING_H_
00026 #define __FIREVISION_FILTER_NOTHING_H_
00027 
00028 #include <filters/filter.h>
00029 
00030 /** @class FilterNothing <filters/nothing.h>
00031  * A filter that does... nothing.
00032  * @author Tim Niemueller
00033  */
00034
00035 class FilterNothing : public Filter
00036 {
00037  public:
00038   /** Constructor. */
00039   FilterNothing() : Filter("FilterNothing") {}
00040
00041   virtual void apply() {}
00042 };
00043
00044 #endif