Added UnifiedResourcesProvider which merges multiple ResourcesDB's and

offers one unified database.

include/resources_db.h

@@ -48,6 +48,11 @@ public:
 	void load( const QString & _file );
 	void save( const QString & _file );
 
+	ResourcesProvider * provider( void )
+	{
+		return m_provider;
+	}
+
 	inline const ItemList & items( void ) const
 	{
 		return m_items;

include/resources_tree_item.h

@@ -104,6 +104,11 @@ public:
 		return m_parent;
 	}
 
+	inline void setParent( ResourcesTreeItem * _parent )
+	{
+		m_parent = _parent;
+	}
+
 	inline bool temporaryMarker( void ) const
 	{
 		return m_temporaryMarker;

include/unified_resources_provider.h

@@ -0,0 +1,78 @@
+/*
+ * unified_resources_provider.h - header file for UnifiedResourcesProvider
+ *
+ * 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 _UNIFIED_RESOURCES_PROVIDER_H
+#define _UNIFIED_RESOURCES_PROVIDER_H
+
+#include "resources_provider.h"
+#include "resources_item.h"
+
+
+class UnifiedResourcesProvider : public ResourcesProvider
+{
+	Q_OBJECT
+public:
+	UnifiedResourcesProvider();
+	virtual ~UnifiedResourcesProvider()
+	{
+	}
+
+	void addDatabase( ResourcesDB * _db );
+
+	virtual QString providerName( void ) const
+	{
+		return "UnifiedResourcesProvider";
+	}
+
+	virtual void updateDatabase( void );
+	virtual int dataSize( const ResourcesItem * _item ) const
+	{
+		if( _item->provider() != this )
+		{
+			return _item->provider()->dataSize( _item );
+		}
+		return 0;
+	}
+	virtual QByteArray fetchData( const ResourcesItem * _item,
+					int _maxSize = -1 ) const
+	{
+		if( _item->provider() != this )
+		{
+			return _item->provider()->fetchData( _item );
+		}
+		return QByteArray();
+	}
+
+
+private:
+	QList<ResourcesDB *> m_mergedDatabases;
+
+
+signals:
+	void itemsChanged( void );
+
+} ;
+
+
+#endif