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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 <tqvaluelist.h>
#include <koffice_export.h>
class TQObject;
class TQStringList;
class KoDocument;
class KoFilter;
class KoFilterChain;
/**
* Represents an available KOffice component
* that supports the document interface.
*/
class KOFFICECORE_EXPORT KoDocumentEntry
{
public:
KoDocumentEntry() { m_service = 0L; } // for TQValueList
KoDocumentEntry( KService::Ptr service );
~KoDocumentEntry() { }
KService::Ptr service() const { return m_service; }
/**
* @return TRUE if the service pointer is null
*/
bool isEmpty() const { return m_service == 0L; }
/**
* @return name of the associated service
*/
TQString name() const { return m_service->name(); }
/**
* Mimetypes (and other service types) which this document can handle.
*/
TQStringList mimeTypes() const { return m_service->serviceTypes(); }
/**
* @return TRUE if the document can handle the requested mimetype.
*/
bool supportsMimeType( const TQString & _mimetype ) const
{ return mimeTypes().contains( _mimetype ); }
/**
* Uses the factory of the component to create
* a document. If that is not possible, 0 is returned.
*/
KoDocument* createDoc( KoDocument* parent = 0, const char* name = 0 ) const;
/**
* This function will query tdesycoca to find all available components.
* The result will only contain parts, which are embeddable into a document
*
* @param _constr is a constraint expression as used by TDETrader.
* You can use it to set additional restrictions on the available
* components.
*/
static TQValueList<KoDocumentEntry> query( const TQString & _constr = TQString() );
/**
* This function will query the system to find all available filters.
*
* @param _onlyDocEmb specifies if only KOffice Parts should be listed which are
* embeddable into other koDocuments, or all (if false)
* (eg.: it makes no sense to embed Kexi into KWord,
* but it makes sense to embed it into KoShell)
* @param _constr is a constraint expression as used by KDEDs trader interface.
* You can use it to set additional restrictions on the available
* components.
*/
// ### 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.
*/
/**
* This is a convenience function.
*
* @return a document entry for the KOffice component that supports
* the requested mimetype and fits the user best.
*/
static KoDocumentEntry queryByMimeType( const TQString & mimetype );
private:
KService::Ptr m_service;
};
/**
* Represents an available filter.
*/
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 );
/**
* The imported mimetype(s).
*/
TQStringList import;
/**
* The exported mimetype(s).
*/
TQStringList export_;
/**
* The "weight" of this filter path. Has to be > 0 to be valid.
*/
unsigned int weight;
/**
* Do we have to check during runtime?
*/
TQString available;
/**
* @return TRUE if the filter can import the requested mimetype.
*/
bool imports( const TQString& _mimetype ) const
{ return ( import.contains( _mimetype ) ); }
/**
* @return TRUE if the filter can export the requested mimetype.
*/
bool exports( const TQString& _m ) const
{ return ( export_.contains( _m ) ); }
/**
* This function will query KDED to find all available filters.
*
* @param _constr is a constraint expression as used by KDEDs trader interface.
* You can use it to set additional restrictions on the available
* components.
*/
static TQValueList<KoFilterEntry::Ptr> query( const TQString& _constr = TQString() );
KService::Ptr service() const { return m_service; }
private:
KService::Ptr m_service;
};
#endif
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