KoQueryTrader.h

/* 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 <tqvaluelist.h>
#include <koffice_export.h>
 
class TQObject;
class TQStringList;
class KoDocument;
class KoFilter;
class KoFilterChain;

class KOFFICECORE_EXPORT KoDocumentEntry
{
 
public:
  KoDocumentEntry() { m_service = 0L; } // for TQValueList
  KoDocumentEntry( KService::Ptr service );
  ~KoDocumentEntry() { }
 
  KService::Ptr service() const { return m_service; }

  bool isEmpty() const { return m_service == 0L; }

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

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

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

  KoDocument* createDoc( KoDocument* parent = 0, const char* name = 0 ) const;

  static TQValueList<KoDocumentEntry> query( const TQString &  _constr = TQString() );

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

  static KoDocumentEntry queryByMimeType( const TQString & mimetype );
 
private:
  KService::Ptr m_service;
};

class KoFilterEntry : public TDEShared
{
 
public:
  typedef TDESharedPtr<KoFilterEntry> Ptr;
 
  KoFilterEntry() : weight( 0 ) { m_service = 0L; } // for TQValueList
  KoFilterEntry( KService::Ptr service );
  ~KoFilterEntry() { }
 
  KoFilter* createFilter( KoFilterChain* chain, TQObject* parent = 0, const char* name = 0 );

  TQStringList import;

  TQStringList export_;

  unsigned int weight;

  TQString available;

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

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

  static TQValueList<KoFilterEntry::Ptr> query( const TQString& _constr = TQString() );
 
  KService::Ptr service() const { return m_service; }
 
private:
  KService::Ptr m_service;
};
 
#endif