//------------------------------------------------------------------------------
//
// This file is part of Toolkit for Conceptual Modeling (TCM).
// (c) copyright 1999, Vrije Universiteit Amsterdam.
// Author: Frank Dehne (frank@cs.vu.nl)
//
// TCM 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.
//
// TCM 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 TCM; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//-----------------------------------------------------------------------------
#ifndef _UPDATETYPECMD_H
#define _UPDATETYPECMD_H

#include "command.h"
#include "llist.h"
class ShapeView;
class Diagram;
class Thing;

/// command for converting things to a different type
class UpdateTypeCmd: public Command {
/*@Doc: {\large {\bf scope:} diagram} */
public:
	///
	UpdateTypeCmd(ShapeView *v, List<int *> *fromTypes, int toType);
	///
	virtual ~UpdateTypeCmd();
	///
	void Execute();
	///
	void UnExecute();
	///
	const char *GetName() const {return "update type";}
protected:
	///
	virtual Thing *Transform(Thing *thing) = 0;
	///
	virtual void Reverse(Thing *oldThing, Thing *newThing) = 0;
	///
	List<Thing *> *oldThings;
	///
	List<Thing *> *newThings;
	///
	int toType;
	///
	List<int*> fromTypes;
	///
	ShapeView *view;
	///	
	Diagram *diagram;
	///
	void TransformAll();
};
#endif
