3 files changed, 19 insertions, 3 deletions
diff --git a/src/libs/client/ObjectModel.h b/src/libs/client/ObjectModel.h
index be58a00f..94103c53 100644
--- a/src/libs/client/ObjectModel.h
+++ b/src/libs/client/ObjectModel.h
@@ -23,6 +23,7 @@
 #include <string>
 #include <algorithm>
 #include <cassert>
+#include <sigc++/sigc++.h>
 #include "util/Path.h"
 
 using std::string; using std::map; using std::find;
@@ -49,7 +50,7 @@ public:
 	const map<string, string>& metadata() const { return m_metadata; }
 	string get_metadata(const string& key) const;
 	void   set_metadata(const string& key, const string& value)
-		{ assert(value.length() > 0); m_metadata[key] = value; }
+		{ assert(value.length() > 0); m_metadata[key] = value; metadata_update_sig.emit(key, value); }
 	
 	inline const Path& path() const            { return m_path; }
 	virtual void       set_path(const Path& p) { m_path = p; }
@@ -65,6 +66,8 @@ public:
 	string        base_path() const;
 	const string  name() const { return m_path.name(); }
 	
+	// Signals
+	sigc::signal<void, const string&, const string&> metadata_update_sig; 
 protected:
 	Path              m_path;
 	ObjectModel*      m_parent;
diff --git a/src/libs/client/Store.cpp b/src/libs/client/Store.cpp
index ae285305..65b3080e 100644
--- a/src/libs/client/Store.cpp
+++ b/src/libs/client/Store.cpp
@@ -33,6 +33,7 @@ Store::Store(SigClientInterface& emitter)
 	emitter.new_patch_sig.connect(sigc::mem_fun(this, &Store::new_patch_event));
 	emitter.new_node_sig.connect(sigc::mem_fun(this, &Store::new_node_event));
 	emitter.new_port_sig.connect(sigc::mem_fun(this, &Store::new_port_event));
+	emitter.metadata_update_sig.connect(sigc::mem_fun(this, &Store::metadata_update_event));
 }
 
 
@@ -259,5 +260,16 @@ Store::new_port_event(const string& path, const string& type, bool is_output)
 }
 
 
+void
+Store::metadata_update_event(const string& subject_path, const string& predicate, const string& value)
+{
+	CountedPtr<ObjectModel> subject = object(subject_path);
+	if (subject)
+		subject->set_metadata(predicate, value);
+	else
+		cerr << "ERROR: metadata for nonexistant object." << endl;
+}
+
+
 } // namespace LibOmClient
 
diff --git a/src/libs/client/Store.h b/src/libs/client/Store.h
index 2b32dde6..3c3f72fa 100644
--- a/src/libs/client/Store.h
+++ b/src/libs/client/Store.h
@@ -41,7 +41,7 @@ class PortModel;
  */
 class Store {
 public:
-	CountedPtr<PluginModel>      plugin(const string& uri);
+	CountedPtr<PluginModel> plugin(const string& uri);
 	CountedPtr<ObjectModel> object(const string& path);
 	CountedPtr<PatchModel>  patch(const string& path);
 	CountedPtr<NodeModel>   node(const string& path);
@@ -73,7 +73,8 @@ private:
 	void new_patch_event(const string& path, uint32_t poly);
 	void new_node_event(const string& plugin_type, const string& plugin_uri, const string& node_path, bool is_polyphonic, uint32_t num_ports);
 	void new_port_event(const string& path, const string& data_type, bool is_output);
-
+	void metadata_update_event(const string& subject_path, const string& predicate, const string& value);
+	
 	map<string, CountedPtr<ObjectModel> > m_objects; ///< Keyed by Om path
 	map<string, CountedPtr<PluginModel> > m_plugins; ///< Keyed by URI
 };