editing example clusters on main view

src/model/sense.py

@@ -27,19 +27,20 @@ class Sense(Editable):
                          sense_xml.querySelectorAll("exampleContainerList exampleContainer")]
         
         # set limit for example cluster
-        self.reserved_example = max(cluster_mappings.values()) + 1
-        cluster_min = self.reserved_example + 1
+        cluster_min =max(cluster_mappings.values()) + 2
+        
+        self._original_examples = set([cluster_min - 1])
+        self._original_examples = set(self.example_clusters())
     
     def merge_labels(self):
         return ", ".join(val for _, val in self.labels)
     
     def example_clusters(self):
-        result = set()
+        result = self._original_examples
         for ex in self.examples:
             cluster = ex.get_cluster()
             if cluster is not None:
                 result.add(cluster)
-        result.add(self.reserved_example)
         
         return sorted(result)