F:/KPlato/koffice/libs/kofficecore/KoQueryTrader.h

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/* This file is part of the KDE project
   Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>

   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 __ko_query_trader_h__
#define __ko_query_trader_h__

#include <kservice.h>
#include <ksharedptr.h>
#include <q3valuelist.h>
#include <koffice_export.h>

class QObject;
class QStringList;
class KoDocument;
class KoFilter;
class KoFilterChain;

class KOFFICECORE_EXPORT KoDocumentEntry
{

public:
  KoDocumentEntry() { m_service = 0L; } // for QValueList
  explicit KoDocumentEntry( KService::Ptr service );
  ~KoDocumentEntry() { }

  KService::Ptr service() const { return m_service; }

  bool isEmpty() const { return m_service.isNull(); }

  QString name() const { return m_service->name(); }

  QStringList mimeTypes() const { return m_service->serviceTypes(); }

  bool supportsMimeType( const QString & _mimetype ) const
  { return mimeTypes().contains( _mimetype ); }

  KoDocument* createDoc( QString* errorMsg = 0, KoDocument* parent = 0 ) const;

  static Q3ValueList<KoDocumentEntry> query( const QString &  _constr = QString::null );

  // ### TODO: MERGE WITH ABOVE METHODE WHEN BIC+SIC CHANGES ARE ALLOWED
  static Q3ValueList<KoDocumentEntry> query( bool _onlyDocEmb,const QString& _constr);
  /* this is how the signature should be looking after merging
  static QValueList<KoDocumentEntry> query( bool _onlyDocEmb =true, const QString& _constr = QString::null );
  or better: use an enum for the first arg.
  */


  static KoDocumentEntry queryByMimeType( const QString & mimetype );

private:
  KService::Ptr m_service;
};

class KOFFICECORE_EXPORT KoFilterEntry : public KShared
{

public:
  typedef KSharedPtr<KoFilterEntry> Ptr;

  KoFilterEntry() : weight( 0 ) { m_service = 0L; } // for QValueList
  KoFilterEntry( KService::Ptr service );
  ~KoFilterEntry() { }

  KoFilter* createFilter( KoFilterChain* chain, QObject* parent = 0 );

  QStringList import;

  QStringList export_;

  unsigned int weight;

  QString available;

  bool imports( const QString& _mimetype ) const
  { return ( import.contains( _mimetype ) ); }

  bool exports( const QString& _m ) const
  { return ( export_.contains( _m ) ); }

  static Q3ValueList<KoFilterEntry::Ptr> query( const QString& _constr = QString::null );

  KService::Ptr service() const { return m_service; }

private:
  KService::Ptr m_service;
};

#endif

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