/// This file is part of the X3DToolKit library
/// Copyright (C) 2002-2004  Yannick Le Goc (legoc@imag.fr)

/// http://artis.imag.fr/Members/Yannick.Legoc/X3D/

/// This library is free software; you can redistribute it and/or
/// modify it under the terms of the GNU Lesser General Public
/// License as published by the Free Software Foundation; either
/// version 2.1 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
/// Lesser General Public License for more details.

/// You should have received a copy of the GNU Lesser General Public
/// License along with this library; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#ifndef X3DTK_WALKER_H
#define X3DTK_WALKER_H

#include "Visitor.h"
#include "X3DAbstractNode.h"

#include <list>

namespace X3DTK {

/*! \brief Class declared in <b><X3DTK/kernel.h></b> defining 
 *  an actor specialized in the walking of nodes.
 *
 *  \ingroup processor
 */

class Walker
{
public:  
  /// Constructor.
  Walker();
  /// Destructor.
  virtual ~Walker();
  
  /// Sets the NodeVisitingProxy.
  void setVisitor(Visitor *visitor);  
  /// Creates the SFNode from its name.
  virtual void walk(SFNode N) const;

protected:
  Visitor *visitor;
};

}

#endif
