File: TemplateReaderNodeIterator.hh

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// Copyright (C) 2000-2004, Luca Padovani <luca.padovani@cs.unibo.it>.
//
// This file is part of GtkMathView, a Gtk widget for MathML.
// 
// GtkMathView 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.
//
// GtkMathView 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 GtkMathView; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// 
// For details, see the GtkMathView World-Wide-Web page,
// http://helm.cs.unibo.it/mml-widget/, or send a mail to
// <lpadovan@cs.unibo.it>

#ifndef __TemplateReaderNodeIterator_hh__
#define __TemplateReaderNodeIterator_hh__

template <class Reader>
struct TemplateReaderNodeIterator
{
  TemplateReaderNodeIterator(const SmartPtr<Reader>& r) : reader(r) { reader->moveToFirstChild(); }
  ~TemplateReaderNodeIterator() { reader->moveToParentNode(); }

  SmartPtr<Reader> node(void) const { return more() ? reader : 0; }
  bool more(void) const { return reader->more(); }
  void next(void) { reader->moveToNextSibling(); }

protected:
  SmartPtr<Reader> reader;
};

#endif // __TemplateReaderNodeIterator_hh__