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/* This file is part of the KDE project
Copyright (C) 2003 Ulrich Kuettler <ulrich.kuettler@gmx.de>
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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef ELEMENTVISITOR_H
#define ELEMENTVISITOR_H
#include "kformuladefs.h"
KFORMULA_NAMESPACE_BEGIN
class BasicElement;
class BracketElement;
class EmptyElement;
class FractionElement;
class IndexElement;
class MatrixElement;
class MultilineElement;
class NameSequence;
class OverlineElement;
class RootElement;
class SequenceElement;
class SpaceElement;
class SymbolElement;
class TextElement;
class UnderlineElement;
/**
* Visitor. Provides a way to add new functionality to the element tree.
*/
class ElementVisitor {
public:
virtual ~ElementVisitor() {}
virtual bool visit( BracketElement* ) { return true; }
virtual bool visit( EmptyElement* ) { return true; }
virtual bool visit( FractionElement* ) { return true; }
virtual bool visit( IndexElement* ) { return true; }
virtual bool visit( MatrixElement* ) { return true; }
virtual bool visit( MultilineElement* ) { return true; }
virtual bool visit( NameSequence* ) { return true; }
virtual bool visit( OverlineElement* ) { return true; }
virtual bool visit( RootElement* ) { return true; }
virtual bool visit( SequenceElement* ) { return true; }
virtual bool visit( SpaceElement* ) { return true; }
virtual bool visit( SymbolElement* ) { return true; }
virtual bool visit( TextElement* ) { return true; }
virtual bool visit( UnderlineElement* ) { return true; }
};
KFORMULA_NAMESPACE_END
#endif // ELEMENTVISITOR_H
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