RecentResourceListModel: new model providing resources sorted by date

RecentResourceListModel is a new proxy model which provides a list of
resources sorted by date (based on a ResourceListModel as source model).

include/RecentResourceListModel.h

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+/*
+ * RecentResourceListModel.h - a model providing list of recent resources
+ *
+ * Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef _RECENT_RESOURCE_LIST_MODEL_H
+#define _RECENT_RESOURCE_LIST_MODEL_H
+
+#include <QtGui/QSortFilterProxyModel>
+
+#include "ResourceListModel.h"
+
+
+class RecentResourceListModel : public QSortFilterProxyModel
+{
+public:
+	RecentResourceListModel( ResourceDB * _db, int _numRows = -1,
+								QObject * _parent = NULL );
+	virtual ~RecentResourceListModel()
+	{
+	}
+
+	virtual int rowCount( const QModelIndex & = QModelIndex() ) const
+	{
+		return m_numRows > 0 ? m_numRows : m_model->rowCount();
+	}
+
+	// return ResourceListModel, this proxy-model is operating on
+	ResourceListModel * resourceListModel()
+	{
+		return m_model;
+	}
+
+
+protected:
+	// compares items at two indices by date-property
+	virtual bool lessThan( const QModelIndex &, const QModelIndex & ) const;
+
+
+private:
+	ResourceListModel * m_model;
+	int m_numRows;
+
+} ;
+
+#endif

src/core/RecentResourceListModel.cpp

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+/*
+ * RecentResourceListModel.cpp - implementation of RecentResourceListModel
+ *
+ * Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include "RecentResourceListModel.h"
+
+
+RecentResourceListModel::RecentResourceListModel( ResourceDB * _db,
+													int _numRows,
+													QObject * _parent ) :
+	QSortFilterProxyModel( _parent ),
+	m_model( new ResourceListModel( _db, _parent ) ),
+	m_numRows( _numRows )
+{
+	setSourceModel( m_model );
+	setDynamicSortFilter( true );
+	sort( 0, Qt::DescendingOrder );
+}
+
+
+
+bool RecentResourceListModel::lessThan ( const QModelIndex & _left,
+											const QModelIndex & _right ) const
+{
+	return m_model->item( _left )->lastMod() < m_model->item( _right )->lastMod();
+}
+
+
+
+#include "moc_RecentResourceListModel.cxx"
+
+/* vim: set tw=0 noexpandtab: */