initial commit

-Added support for adding and editing enums
-changed behaviour of template psets that have enums.

src/ifcopenshell-python/ifcopenshell/api/pset/data.py

@@ -94,13 +94,15 @@ class Data:
         elif hasattr(pset, "Properties"):
             props = pset.Properties or []
         # TODO: support more than single values
-        data["Properties"] = [p.id() for p in props if p.is_a("IfcPropertySingleValue")]
+        data["Properties"] = [p.id() for p in props if p.is_a("IfcPropertyEnumeratedValue") or p.is_a("IfcPropertySingleValue")]
         cls.psets[pset.id()] = data
         cls.products[product_id]["psets"].add(pset.id())
         for prop in props:
             # TODO: support more than single values
             if prop.is_a("IfcPropertySingleValue"):
                 cls.load_prop(prop)
+            elif prop.is_a("IfcPropertyEnumeratedValue"):
+                cls.load_prop_enum(prop)
 
     @classmethod
     def load_prop(cls, prop):
@@ -116,7 +118,14 @@ class Data:
             # For convenience, which trumps correctness in this case
             data["NominalValue"] = prop[3]
         cls.properties[prop.id()] = data
-
+        
+    @classmethod
+    def load_prop_enum(cls, prop):
+        data = prop.get_info()
+        enumerations = [enum.wrappedValue for enum in data["EnumerationValues"]]
+        data["NominalValue"] = str(enumerations)
+        cls.properties[prop.id()] = data
+        
     @classmethod
     def add_qto(cls, qto, product_id):
         data = qto.get_info()