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/* This file is part of the KDE project
   Copyright (C) 2003 Norbert Andres, nandres@web.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 __kspread_style_manager__
#define __kspread_style_manager__

#include <tqmap.h>

#include <koffice_export.h>

class TQDomElement;
class TQDomDocument;
class TQStringList;

class KoGenStyles;
class KoOasisStyles;

namespace KSpread
{
class CustomStyle;
class Sheet;
class StyleDlg;
class View;

class KSPREAD_EXPORT StyleManager
{
 public:
  StyleManager();
  ~StyleManager();

  TQDomElement save( TQDomDocument & doc );
  bool loadXML( TQDomElement const & styles );

    void saveOasis( KoGenStyles &mainStyles );
    void loadOasisStyleTemplate(  KoOasisStyles& oasisStyles );

  CustomStyle * defaultStyle() const { return m_defaultStyle; }
  CustomStyle * style( TQString const & name ) const;

  bool checkCircle( TQString const & name, TQString const & parent );
  bool validateStyleName( TQString const & name, CustomStyle * style );
  void changeName( TQString const & oldName, TQString const & newName );

  void takeStyle( CustomStyle * style );
  void createBuiltinStyles();

  TQStringList styleNames() const;
  int count() const { return m_styles.count(); }

  /**
   * Loads OpenDocument auto styles.
   * The auto styles are preloaded, because an auto style could be shared
   * among cells. So, preloading prevents a multiple loading of the same
   * auto style.
   * This method is called before the cell loading process.
   * @param oasisStyles repository of styles
   * @return a hash of styles with the OpenDocument internal name as key
   */
  TQDict<Style> loadOasisAutoStyles( KoOasisStyles& oasisStyles );

  /**
   * Releases unused auto styles.
   * If there are auto styles, which are not used by any cell (uncommon case)
   * this method makes sure, that these get deleted.
   * This method is called after the cell loading porcess.
   * @param autoStyles a hash of styles with the OpenDocument internal name as
   *                   key
   * @see loadOasisAutoStyles
   */
  void releaseUnusedAutoStyles( TQDict<Style> autoStyles );

 private:
  friend class StyleDlg;
  friend class View;
  class Styles : public TQMap<TQString, CustomStyle *> {};

  CustomStyle * m_defaultStyle;
  Styles               m_styles; // builtin and custom made styles

  // Same styles as above, but with the internal OpenDocument name as key.
  // NOTE: Temporary! Only valid while loading OpenDocument files.
  Styles  m_oasisStyles;
};

} // namespace KSpread

#endif