text: /*
     Copyright (C) 2001-2006, William Joseph.
     All Rights Reserved.
  
     This file is part of GtkRadiant.
  
     GtkRadiant 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.
  
     GtkRadiant 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 GtkRadiant; if not, write to the Free Software
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   */
  
  #if !defined( INCLUDED_MAPFILE_H )
  #define INCLUDED_MAPFILE_H
  
  #include <limits>
  
  #include "iscenegraph.h"
  #include "generic/callbackfwd.h"
  
  const std::size_t MAPFILE_MAX_CHANGES = std::numeric_limits<std::size_t>::max();
  
  class MapFile
  {
  public:
  	STRING_CONSTANT( Name, "MapFile" );
  
  	virtual void save() = 0;
  	virtual bool saved() const = 0;
  	virtual void changed() = 0;
  	virtual void setChangedCallback( const Callback& changed ) = 0;
  	virtual std::size_t changes() const = 0;
  };
  
  #include "scenelib.h"
  
  inline MapFile* Node_getMapFile( scene::Node& node ){
  	return NodeTypeCast<MapFile>::cast( node );
  }
  
  template<typename Iterator>
  inline MapFile* path_find_mapfile( Iterator first, Iterator last ){
  	Iterator i = last;
  	for (;; )
  	{
  		--i;
  
  		MapFile* map = Node_getMapFile( *i );
  		if ( map != 0 ) {
  			return map;
  		}
  
  		if ( i == first ) {
  			break;
  		}
  	}
  	ERROR_MESSAGE( "failed to find parent mapfile for path" );
  	return 0;
  }
  
  
  
  #endif
  