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0001 /**************************************************************************************** 0002 * Copyright (c) 2009 Maximilian Kossick <maximilian.kossick@googlemail.com> * 0003 * * 0004 * This program is free software; you can redistribute it and/or modify it under * 0005 * the terms of the GNU General Public License as published by the Free Software * 0006 * Foundation; either version 2 of the License, or (at your option) any later * 0007 * version. * 0008 * * 0009 * This program is distributed in the hope that it will be useful, but WITHOUT ANY * 0010 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A * 0011 * PARTICULAR PURPOSE. See the GNU General Public License for more details. * 0012 * * 0013 * You should have received a copy of the GNU General Public License along with * 0014 * this program. If not, see <http://www.gnu.org/licenses/>. * 0015 ****************************************************************************************/ 0016 0017 #include "DBusQueryHelper.h" 0018 0019 #include "core/collections/QueryMaker.h" 0020 #include "core/meta/Meta.h" 0021 #include "core/meta/support/MetaUtility.h" 0022 #include "core/support/Debug.h" 0023 0024 #include <QTimer> 0025 0026 Q_DECLARE_METATYPE( VariantMapList ) 0027 0028 DBusQueryHelper::DBusQueryHelper( QObject *parent, Collections::QueryMaker *qm, const QDBusConnection &conn, const QDBusMessage &msg, bool mprisCompatible ) 0029 : QObject( parent ) 0030 , m_connection( conn ) 0031 , m_message( msg ) 0032 , m_mprisCompatibleResult( mprisCompatible ) 0033 , m_timeout( false ) 0034 { 0035 qm->setAutoDelete( true ); 0036 qm->setQueryType( Collections::QueryMaker::Track ); 0037 connect( qm, &Collections::QueryMaker::newTracksReady, this, &DBusQueryHelper::slotResultReady, Qt::QueuedConnection ); 0038 connect( qm, &Collections::QueryMaker::queryDone, this, &DBusQueryHelper::slotQueryDone, Qt::QueuedConnection ); 0039 qm->run(); 0040 0041 //abort query after 15 seconds in case the query does not return 0042 QTimer::singleShot( 15000, this, &DBusQueryHelper::abortQuery ); 0043 } 0044 0045 void 0046 DBusQueryHelper::slotResultReady( const Meta::TrackList &tracks ) 0047 { 0048 foreach( const Meta::TrackPtr &track, tracks ) 0049 { 0050 if( m_mprisCompatibleResult ) 0051 m_result.append( Meta::Field::mprisMapFromTrack( track ) ); 0052 else 0053 m_result.append( Meta::Field::mapFromTrack( track ) ); 0054 } 0055 } 0056 0057 void 0058 DBusQueryHelper::slotQueryDone() 0059 { 0060 deleteLater(); 0061 0062 if( m_timeout ) 0063 return; 0064 0065 QDBusMessage reply = m_message.createReply( QVariant::fromValue( m_result ) ); 0066 bool success = m_connection.send( reply ); 0067 if( !success ) 0068 debug() << "sending async reply failed"; 0069 } 0070 0071 void 0072 DBusQueryHelper::abortQuery() 0073 { 0074 deleteLater(); 0075 m_timeout = true; 0076 0077 QDBusMessage error = m_message.createErrorReply( QDBusError::InternalError, QStringLiteral("Internal timeout") ); 0078 bool success = m_connection.send( error ); 0079 if( !success ) 0080 debug() << "sending async error failed"; 0081 }