sdext/source/pdfimport/inc/treevisiting.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_SDEXT_SOURCE_PDFIMPORT_INC_TREEVISITING_HXX
  21 #define INCLUDED_SDEXT_SOURCE_PDFIMPORT_INC_TREEVISITING_HXX
  22
  23 #include <sal/config.h>
  24 #include <list>
  25
  26
  27 namespace pdfi
  28 {
  29     struct HyperlinkElement;
  30     struct TextElement;
  31     struct ParagraphElement;
  32     struct FrameElement;
  33     struct PolyPolyElement;
  34     struct ImageElement;
  35     struct PageElement;
  36     struct DocumentElement;
  37     struct Element;
  38
  39     /** To be visited by all tree element types
  40
  41         Visitor interface from the "visitor pattern". Implementor gets
  42         called with actual tree node instances.
  43      */
  44     struct ElementTreeVisitor
  45     {
  46         virtual void visit( HyperlinkElement&, const std::list< std::unique_ptr<Element> >::const_iterator& ) = 0;
  47         virtual void visit( TextElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  48         virtual void visit( ParagraphElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  49         virtual void visit( FrameElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  50         virtual void visit( PolyPolyElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  51         virtual void visit( ImageElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  52         virtual void visit( PageElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  53         virtual void visit( DocumentElement&, const std::list< std::unique_ptr<Element> >::const_iterator&  ) = 0;
  54         virtual ~ElementTreeVisitor() {}
  55     };
  56     typedef std::shared_ptr<ElementTreeVisitor> ElementTreeVisitorSharedPtr;
  57
  58 }
  59
  60 #endif
  61
  62 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */