/* This file is part of the KDE project
   Copyright (C) 2002, The Karbon Developers

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#ifndef __VVISITOR_H__
#define __VVISITOR_H__


class VComposite;
class VDocument;
class VGroup;
class VLayer;
class VObject;
class VPath;
class VText;


class VVisitor
{
public:
	VVisitor()
		{ m_success = false; }

	virtual bool visit( VObject& object );

	virtual void visitVComposite( VComposite& composite );
	virtual void visitVDocument( VDocument& document );
	virtual void visitVGroup( VGroup& group );
	virtual void visitVLayer( VLayer& layer );
	virtual void visitVPath( VPath& path );
	virtual void visitVText( VText& text );

protected:
	/**
	 * Make this class "abstract".
	 */
	virtual ~VVisitor() {}

	bool success() const
		{ return m_success; }
	void setSuccess( bool success = true )
		{ m_success = success; }

private:
	bool m_success;
};

#endif

