File indexing completed on 2024-12-08 12:56:12

 /* This file is part of the KDE project
 
    Copyright (C) 2013-2014 Inge Wallin       <inge@lysator.liu.se>
 
    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 ODFREADERBACKEND_H
 #define ODFREADERBACKEND_H
 
 // Calligra
 #include <KoXmlStreamReader.h>
 #include <KoFilter.h>
 
 // this library
 #include "koodfreader_export.h"
 #include "OdfReader.h"
 
 
 class QByteArray;
 class QSizeF;
 class QStringList;
 class KoStore;
 class OdfReaderContext;
 
 
 /** @brief A default backend for the OdfReader class.
  *
  * This class defines an interface and the default behaviour for the
  * backend to the ODF reader (@see OdfReader). When the
  * reader is called upon to traverse a certain XML tree, there will
  * be two parameters to the root traverse function: a pointer to a
  * backend object and a pointer to a context object.
  *
  * The reader will traverse (read) the XML tree and for every element
  * it comes across it will call a specific function in the backend and
  * every call will pass the pointer to the context object.
  *
  * Each supported XML tag has a corresponding callback function. This
  * callback function will be called twice: once when the tag is first
  * encountered anc once when the tag is closed.  This means that an
  * element with no child elements will be called twice in succession.
  *
  * The callback function receives as parameter a reference to the XML
  * stream reader. From this parameter it can be deduced if the call is
  * for a start element or an end element and also access the
  * attributes of the element.
  *
  * This class defines a virtual function for every supported
  * element. It also implements a default behaviour for every element
  * which is to ignore the parameters and do nothing.
  *
  * When this class is used e.g. in a filter it is recommended to
  * inherit this class and only reimplement those functions that are
  * actually needed.
  */
 class KOODFREADER_EXPORT OdfReaderBackend
 {
  public:
     explicit OdfReaderBackend();
     virtual ~OdfReaderBackend();
 
     // ----------------------------------------------------------------
     // ODF document level functions
 
     DECLARE_BACKEND_FUNCTION(OfficeDocumentcontent);
     DECLARE_BACKEND_FUNCTION(OfficeBody);
 
  private:
     class Private;
     Private * const d;
 };
 
 
 #endif // ODFREADERBACKEND_H