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akonadi

agentfilterproxymodel.cpp

00001 /*
00002     Copyright (c) 2007 Volker Krause <vkrause@kde.org>
00003 
00004     This library is free software; you can redistribute it and/or modify it
00005     under the terms of the GNU Library General Public License as published by
00006     the Free Software Foundation; either version 2 of the License, or (at your
00007     option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful, but WITHOUT
00010     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00011     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00012     License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to the
00016     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017     02110-1301, USA.
00018 */
00019 
00020 #include "agentfilterproxymodel.h"
00021 
00022 #include "agenttypemodel.h"
00023 #include "agentinstancemodel.h"
00024 
00025 #include <kdebug.h>
00026 #include <kmimetype.h>
00027 
00028 #include <QtCore/QStringList>
00029 
00030 #include <boost/static_assert.hpp>
00031 
00032 using namespace Akonadi;
00033 
00034 // ensure the role numbers are equivalent for both source models
00035 BOOST_STATIC_ASSERT( (int)AgentTypeModel::CapabilitiesRole == (int)AgentInstanceModel::CapabilitiesRole );
00036 BOOST_STATIC_ASSERT( (int)AgentTypeModel::MimeTypesRole == (int)AgentInstanceModel::MimeTypesRole );
00037 
00041 class AgentFilterProxyModel::Private
00042 {
00043   public:
00044     QStringList mimeTypes;
00045     QStringList capabilities;
00046     QStringList excludeCapabilities;
00047 };
00048 
00049 AgentFilterProxyModel::AgentFilterProxyModel( QObject *parent )
00050   : QSortFilterProxyModel( parent ),
00051     d( new Private )
00052 {
00053   setDynamicSortFilter( true );
00054 }
00055 
00056 AgentFilterProxyModel::~AgentFilterProxyModel()
00057 {
00058   delete d;
00059 }
00060 
00061 void AgentFilterProxyModel::addMimeTypeFilter( const QString &mimeType )
00062 {
00063   d->mimeTypes << mimeType;
00064   invalidateFilter();
00065 }
00066 
00067 void AgentFilterProxyModel::addCapabilityFilter( const QString &capability )
00068 {
00069   d->capabilities << capability;
00070   invalidateFilter();
00071 }
00072 
00073 
00074 void AgentFilterProxyModel::excludeCapabilities( const QString &capability )
00075 {
00076   d->excludeCapabilities << capability;
00077   invalidateFilter();
00078 }
00079 
00080 void AgentFilterProxyModel::clearFilters()
00081 {
00082   d->capabilities.clear();
00083   d->mimeTypes.clear();
00084   d->excludeCapabilities.clear();
00085   invalidateFilter();
00086 }
00087 
00088 bool AgentFilterProxyModel::filterAcceptsRow( int row, const QModelIndex& ) const
00089 {
00090   const QModelIndex index = sourceModel()->index( row, 0 );
00091 
00092   // First see if the name matches a set regexp filter.
00093   if ( !filterRegExp().isEmpty() && !index.data().toString().contains( filterRegExp() ) )
00094     return false;
00095 
00096   if ( !d->mimeTypes.isEmpty() ) {
00097     bool found = false;
00098     foreach ( const QString &mimeType, index.data( AgentTypeModel::MimeTypesRole ).toStringList() ) {
00099       if ( d->mimeTypes.contains( mimeType ) ) {
00100         found = true;
00101       } else {
00102         KMimeType::Ptr mimeTypePtr = KMimeType::mimeType( mimeType, KMimeType::ResolveAliases );
00103         if ( !mimeTypePtr.isNull() ) {
00104           foreach ( const QString &type, d->mimeTypes ) {
00105             if ( mimeTypePtr->is( type )) {
00106               found = true;
00107               break;
00108             }
00109           }
00110         }
00111       }
00112 
00113       if ( found )
00114         break;
00115     }
00116 
00117     if ( !found )
00118       return false;
00119   }
00120 
00121   if ( !d->capabilities.isEmpty() ) {
00122     bool found = false;
00123     foreach ( const QString &capability, index.data( AgentTypeModel::CapabilitiesRole ).toStringList() ) {
00124       if ( d->capabilities.contains( capability ) ) {
00125         found = true;
00126         break;
00127       }
00128     }
00129 
00130     if ( !found )
00131       return false;
00132 
00133     if ( found && !d->excludeCapabilities.isEmpty() ) {
00134       foreach ( const QString &capability, index.data( AgentTypeModel::CapabilitiesRole ).toStringList() ) {
00135         if ( d->excludeCapabilities.contains( capability ) ) {
00136           found = false;
00137           break;
00138         }
00139       }
00140 
00141       if ( !found )
00142         return false;
00143     }
00144   }
00145 
00146   return true;
00147 }
00148 
00149 #include "agentfilterproxymodel.moc"

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