/* -*- mode: c++ -*- 
*/
/* 

    GIFT, a flexible content based image retrieval system.
    Copyright (C) 1998, 1999, 2000 CUI, University of Geneva

    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/
// -*- mode: c++ -*-
#ifndef _CXMLELEMENTVISITOR
#define _CXMLELEMENTVISITOR

#include "CXMLElement.h"

/**
   This class is designed for visiting XML document trees.
   It's only
 */
class CXMLElementVisitor{
 public:
    /** 
	makes this visit inVisted.
	The return value decides, if 
	the visit recurses further or not
    */
    virtual bool startVisit(const CXMLElement& inVisited)=0;
    /** 
	visiting on the way back
    */
    virtual void endVisit(const CXMLElement& inVisited)=0;
};

#endif
