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Diffstat (limited to 'tdeio/tdeio/ktrader.cpp')
| -rw-r--r-- | tdeio/tdeio/ktrader.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/tdeio/tdeio/ktrader.cpp b/tdeio/tdeio/ktrader.cpp new file mode 100644 index 000000000..585c6a499 --- /dev/null +++ b/tdeio/tdeio/ktrader.cpp @@ -0,0 +1,186 @@ +/* This file is part of the KDE libraries + Copyright (C) 2000 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 version 2 as published by the Free Software Foundation. + + 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 "ktrader.h" +#include "ktraderparsetree.h" + +#include <tqtl.h> +#include <tqbuffer.h> + +#include <kuserprofile.h> +#include <kstandarddirs.h> +#include <kstaticdeleter.h> +#include <kdebug.h> + +template class KStaticDeleter<KTrader>; + +using namespace TDEIO; + +class KTraderSorter +{ +public: + KTraderSorter() { m_pService = 0; }; + KTraderSorter( const KTraderSorter& s ) : m_userPreference( s.m_userPreference ), + m_bAllowAsDefault( s.m_bAllowAsDefault ), + m_traderPreference( s.m_traderPreference ), m_pService( s.m_pService ) { } + KTraderSorter( const KService::Ptr &_service, double _pref1, int _pref2, bool _default ) + { m_pService = _service; + m_userPreference = _pref2; + m_traderPreference = _pref1; + m_bAllowAsDefault = _default; + } + + KService::Ptr service() const { return m_pService; } + + bool operator< ( const KTraderSorter& ) const; + +private: + /** + * The bigger this number is, the better is this service in + * the users opinion. + */ + int m_userPreference; + /** + * Is it allowed to use this service for default actions. + */ + bool m_bAllowAsDefault; + + /** + * The bigger this number is, the better is this service with + * respect to the queries preferences expression. + */ + double m_traderPreference; + + KService::Ptr m_pService; +}; + +bool KTraderSorter::operator< ( const KTraderSorter& _o ) const +{ + if ( _o.m_bAllowAsDefault && !m_bAllowAsDefault ) + return true; + if ( _o.m_userPreference > m_userPreference ) + return true; + if ( _o.m_userPreference < m_userPreference ) + return false; + if ( _o.m_traderPreference > m_traderPreference ) + return true; + return false; +} + +// -------------------------------------------------- + +KTrader* KTrader::s_self = 0; +static KStaticDeleter<KTrader> ktradersd; + +KTrader* KTrader::self() +{ + if ( !s_self ) + ktradersd.setObject( s_self, new KTrader ); + + return s_self; +} + +KTrader::KTrader() +{ +} + +KTrader::~KTrader() +{ +} + +KTrader::OfferList KTrader::query( const TQString& _servicetype, const TQString& _constraint, + const TQString& _preferences ) const +{ + return query( _servicetype, TQString::null, _constraint, _preferences ); +} + +KTrader::OfferList KTrader::query( const TQString& _servicetype, const TQString& _genericServiceType, + const TQString& _constraint, + const TQString& _preferences ) const +{ + // TODO: catch errors here + ParseTreeBase::Ptr constr; + ParseTreeBase::Ptr prefs; + + if ( !_constraint.isEmpty() ) + constr = TDEIO::parseConstraints( _constraint ); + + if ( !_preferences.isEmpty() ) + prefs = TDEIO::parsePreferences( _preferences ); + + KServiceTypeProfile::OfferList lst; + KTrader::OfferList ret; + + // Get all services of this service type. + lst = KServiceTypeProfile::offers( _servicetype, _genericServiceType ); + if ( lst.count() == 0 ) + return ret; + + if ( !!constr ) + { + // Find all services matching the constraint + // and remove the other ones + KServiceTypeProfile::OfferList::Iterator it = lst.begin(); + while( it != lst.end() ) + { + if ( matchConstraint( constr, (*it).service(), lst ) != 1 ) + it = lst.remove( it ); + else + ++it; + } + } + + if ( !!prefs ) + { + TQValueList<KTraderSorter> sorter; + KServiceTypeProfile::OfferList::Iterator it = lst.begin(); + for( ; it != lst.end(); ++it ) + { + PreferencesReturn p = matchPreferences( prefs, (*it).service(), lst ); + if ( p.type == PreferencesReturn::PRT_DOUBLE ) + sorter.append( KTraderSorter( (*it).service(), p.f, (*it).preference(), (*it).allowAsDefault() ) ); + } + qBubbleSort( sorter ); + + TQValueList<KTraderSorter>::Iterator it2 = sorter.begin(); + for( ; it2 != sorter.end(); ++it2 ) + ret.prepend( (*it2).service() ); + } + else + { + KServiceTypeProfile::OfferList::Iterator it = lst.begin(); + for( ; it != lst.end(); ++it ) + ret.append( (*it).service() ); + } + +#ifndef NDEBUG + TQString query = _servicetype; + if ( !_genericServiceType.isEmpty() ) { + query += ", "; + query += _genericServiceType; + } + kdDebug(7014) << "query for " << query + << " : returning " << ret.count() << " offers" << endl; +#endif + return ret; +} + +void KTrader::virtual_hook( int, void* ) +{ /*BASE::virtual_hook( id, data );*/ } + +#include "ktrader.moc" |