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

@@ -0,0 +1,65 @@
+/*
+ * 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