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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_PDFI_TREEVISITING_HXX
#define INCLUDED_PDFI_TREEVISITING_HXX
#include <sal/config.h>
#include <list>
namespace pdfi
{
struct HyperlinkElement;
struct TextElement;
struct ParagraphElement;
struct FrameElement;
struct PolyPolyElement;
struct ImageElement;
struct PageElement;
struct DocumentElement;
struct Element;
/** To be visited by all tree element types
Visitor interface from the "visitor pattern". Implementor gets
called with actual tree node instances.
*/
struct ElementTreeVisitor
{
virtual void visit( HyperlinkElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( TextElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( ParagraphElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( FrameElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( PolyPolyElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( ImageElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( PageElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual void visit( DocumentElement&, const std::list< Element* >::const_iterator& ) = 0;
virtual ~ElementTreeVisitor() {}
};
typedef boost::shared_ptr<ElementTreeVisitor> ElementTreeVisitorSharedPtr;
/** Visitee interface
To be implemented by every tree node that needs to be
visitable.
*/
struct ElementTreeVisitable
{
virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ) = 0;
protected:
~ElementTreeVisitable() {}
};
typedef boost::shared_ptr<ElementTreeVisitable> ElementTreeVisitableSharedPtr;
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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