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75 lines
2 KiB
C++
75 lines
2 KiB
C++
/*
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* This file is part of the syndication library
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*
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* Copyright (C) 2006 Frank Osterfeld <osterfeld@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SYNDICATION_SPECIFICITEM_H
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#define SYNDICATION_SPECIFICITEM_H
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#include "ksyndication_export.h"
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#include <boost/shared_ptr.hpp>
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namespace Syndication {
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class SpecificItemVisitor;
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class SpecificItem;
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//@cond PRIVATE
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typedef boost::shared_ptr<SpecificItem> SpecificItemPtr;
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//@endcond
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/**
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* Interface for all format-specific item-like classes, such as
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* RSS2/RDF items, and Atom entries. To process items based on their
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* format, use a SpecificItemVisitor.
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*
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* @author Frank Osterfeld
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*/
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class SYNDICATION_EXPORT SpecificItem
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{
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public:
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/**
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* virtual dtor
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*/
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virtual ~SpecificItem();
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/**
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* This must be implemented for the double dispatch
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* technique (Visitor pattern).
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*
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* The usual implementation is
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* @code
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* return visitor->visit(this);
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* @endcode
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*
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* See also SpecificItemVisitor.
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*
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* @param visitor the visitor "visiting" this object
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*/
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virtual bool accept(SpecificItemVisitor* visitor) = 0;
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};
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} // namespace Syndication
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#endif // SYNDICATION_SPECIFICITEM_H
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