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diff --git a/src/clients/ModelClientInterface.h b/src/clients/ModelClientInterface.h
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+/* This file is part of Om.  Copyright (C) 2005 Dave Robillard.
+ * 
+ * Om 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.
+ * 
+ * Om 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 details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef MODELCLIENTINTERFACE_H
+#define MODELCLIENTINTERFACE_H
+
+#include <string>
+#include <memory>
+using std::string; using std::auto_ptr;
+#include "interface/ClientInterface.h"
+
+namespace LibOmClient {
+
+class PatchModel;
+class NodeModel;
+class ConnectionModel;
+class PortModel;
+class PluginModel;
+
+
+/** A client interface that creates Model objects to represent the engine's state.
+ *
+ * This calls it's own methods with the models as parameters; clients can inherit
+ * this and implement a class with a similar interface to ClientInterface except
+ * with model classes passed where appropriate instead of primitives.
+ *
+ * \ingroup libomclient
+ */
+class ModelClientInterface : virtual public Om::Shared::ClientInterface
+{
+public:
+	ModelClientInterface(Om::Shared::ClientInterface& extend)
+	: Om::Shared::ClientInterface(extend)
+	{}
+	
+	virtual ~ModelClientInterface() {}
+
+	// FIXME: make these auto_ptr's
+	
+	virtual void new_plugin_model(PluginModel* pi);
+	virtual void new_patch_model(PatchModel* pm);
+	virtual void new_node_model(NodeModel* nm);
+	virtual void new_port_model(PortModel* port_info);
+	virtual void connection_model(ConnectionModel* cm);
+
+	// ClientInterface functions to drive the above:
+	
+	virtual void new_plugin(const string& type,
+	                        const string& uri,
+	                        const string& name);
+	
+	virtual void new_patch(const string& path, uint32_t poly);
+	
+	virtual void new_node(const string& plugin_type,
+	                      const string& plugin_uri,
+	                      const string& node_path,
+	                      bool          is_polyphonic,
+	                      uint32_t      num_ports);
+	
+	virtual void new_port(const string& path,
+	                      const string& data_type,
+	                      bool          is_output);
+	
+	virtual void connection(const string& src_port_path,
+	                        const string& dst_port_path);
+
+protected:
+	ModelClientInterface() {}
+};
+
+
+} // namespace LibOmClient
+
+#endif // MODELCLIENTINTERFACE_H