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koffice/lib/kofficecore/KoQueryTrader.cpp

215 lines
6.9 KiB

/* 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.
*/
#include <kparts/factory.h>
#include <KoQueryTrader.h>
#include <KoDocument.h>
#include <KoFilter.h>
#include <ktrader.h>
#include <kservicetype.h>
#include <kdebug.h>
#include <qfile.h>
#include <limits.h> // UINT_MAX
/**
* Port from KOffice Trader to KTrader/KActivator (kded) by Simon Hausmann
* (c) 1999 Simon Hausmann <hausmann@kde.org>
* Port to KService and simplifications by David Faure <faure@kde.org>
*/
/*******************************************************************
*
* KoDocumentEntry
*
*******************************************************************/
KoDocumentEntry::KoDocumentEntry( KService::Ptr service )
: m_service( service )
{
}
KoDocument* KoDocumentEntry::createDoc( KoDocument* parent, const char* name ) const
{
KLibFactory* factory = KLibLoader::self()->factory( QFile::encodeName(m_service->library()) );
if( !factory ) {
kdWarning(30003) << KLibLoader::self()->lastErrorMessage() << endl;
return 0;
}
QObject* obj;
if ( factory->inherits( "KParts::Factory" ) )
obj = static_cast<KParts::Factory *>(factory)->createPart( 0L, "", parent, name, "KoDocument" );
else {
kdWarning(30003) << "factory doesn't inherit KParts::Factory ! It is a " << factory->className() << endl; // This shouldn't happen...
obj = factory->create( parent, name, "KoDocument" );
}
if ( !obj || !obj->inherits( "KoDocument" ) )
{
delete obj;
return 0;
}
return static_cast<KoDocument*>(obj);
}
KoDocumentEntry KoDocumentEntry::queryByMimeType( const QString & mimetype )
{
QString constr = QString::fromLatin1( "[X-KDE-NativeMimeType] == '%1' or '%2' in [X-KDE-ExtraNativeMimeTypes]" ).arg( mimetype ).arg( mimetype );
QValueList<KoDocumentEntry> vec = query( false,constr );
if ( vec.isEmpty() )
{
kdWarning(30003) << "Got no results with " << constr << endl;
// Fallback to the old way (which was probably wrong, but better be safe)
QString constr = QString::fromLatin1( "'%1' in ServiceTypes" ).arg( mimetype );
vec = query( constr );
if ( vec.isEmpty() )
{
// Still no match. Either the mimetype itself is unknown, or we have no service for it.
// Help the user debugging stuff by providing some more diagnostics
if ( KServiceType::serviceType( mimetype ) == 0L )
{
kdError(30003) << "Unknown KOffice MimeType " << mimetype << "." << endl;
kdError(30003) << "Check your installation (for instance, run 'kde-config --path mime' and check the result)." << endl;
} else
{
kdError(30003) << "Found no KOffice part able to handle " << mimetype << "!" << endl;
kdError(30003) << "Check your installation (does the desktop file have X-KDE-NativeMimeType and KOfficePart, did you install KOffice in a different prefix than KDE, without adding the prefix to /etc/kderc ?)" << endl;
}
return KoDocumentEntry();
}
}
return vec[0];
}
QValueList<KoDocumentEntry> KoDocumentEntry::query( const QString & _constr )
{
return query(true,_constr);
}
QValueList<KoDocumentEntry> KoDocumentEntry::query( bool _onlyDocEmb, const QString & _constr )
{
QValueList<KoDocumentEntry> lst;
QString constr;
if ( !_constr.isEmpty() ) {
constr = "(";
constr += _constr;
constr += ") and ";
}
constr += " exist Library";
// Query the trader
KTrader::OfferList offers = KTrader::self()->query( "KOfficePart", constr );
KTrader::OfferList::ConstIterator it = offers.begin();
unsigned int max = offers.count();
for( unsigned int i = 0; i < max; i++, ++it )
{
//kdDebug(30003) << " desktopEntryPath=" << (*it)->desktopEntryPath()
// << " library=" << (*it)->library() << endl;
if ( (*it)->noDisplay() )
continue;
// Maybe this could be done as a trader constraint too.
if ( (!_onlyDocEmb) || ((*it)->property("X-KDE-NOTKoDocumentEmbeddable").toString()!="1") )
{
KoDocumentEntry d( *it );
// Append converted offer
lst.append( d );
// Next service
}
}
if ( lst.count() > 1 && !_constr.isEmpty() )
kdWarning(30003) << "KoDocumentEntry::query " << constr << " got " << max << " offers!" << endl;
return lst;
}
/*******************************************************************
*
* KoFilterEntry
*
*******************************************************************/
KoFilterEntry::KoFilterEntry( KService::Ptr service )
: m_service( service )
{
import = service->property( "X-KDE-Import" ).toStringList();
export_ = service->property( "X-KDE-Export" ).toStringList();
int w = service->property( "X-KDE-Weight" ).toInt();
weight = w < 0 ? UINT_MAX : static_cast<unsigned int>( w );
available = service->property( "X-KDE-Available" ).toString();
}
QValueList<KoFilterEntry::Ptr> KoFilterEntry::query( const QString & _constr )
{
kdDebug(30500) << "KoFilterEntry::query( " << _constr << " )" << endl;
QValueList<KoFilterEntry::Ptr> lst;
KTrader::OfferList offers = KTrader::self()->query( "KOfficeFilter", _constr );
KTrader::OfferList::ConstIterator it = offers.begin();
unsigned int max = offers.count();
//kdDebug(30500) << "Query returned " << max << " offers" << endl;
for( unsigned int i = 0; i < max; i++ )
{
//kdDebug(30500) << " desktopEntryPath=" << (*it)->desktopEntryPath()
// << " library=" << (*it)->library() << endl;
// Append converted offer
lst.append( new KoFilterEntry( *it ) );
// Next service
it++;
}
return lst;
}
KoFilter* KoFilterEntry::createFilter( KoFilterChain* chain, QObject* parent, const char* name )
{
KLibFactory* factory = KLibLoader::self()->factory( QFile::encodeName( m_service->library() ) );
if ( !factory ) {
kdWarning(30003) << KLibLoader::self()->lastErrorMessage() << endl;
return 0;
}
QObject* obj = factory->create( parent, name, "KoFilter" );
if ( !obj || !obj->inherits( "KoFilter" ) )
{
delete obj;
return 0;
}
KoFilter* filter = static_cast<KoFilter*>( obj );
filter->m_chain = chain;
return filter;
}