Enable adding fillings from the opening object ui

src/blenderbim/blenderbim/bim/module/void/ui.py

@@ -38,9 +38,28 @@ class BIM_PT_voids(Panel):
 
     def draw(self, context):
         props = context.active_object.BIMObjectProperties
+        file = IfcStore.get_file()
         if props.ifc_definition_id not in Data.products:
-            Data.load(IfcStore.get_file(), props.ifc_definition_id)
+            Data.load(file, props.ifc_definition_id)
 
+        element = file.by_id(props.ifc_definition_id)
+        if element.is_a("IfcOpeningElement"):
+            self.layout.label(text="Select a filling")
+            row = self.layout.row(align=True)
+            row.prop(context.scene.VoidProperties, "desired_opening", text="", icon="SELECT_INTERSECT")
+            op = row.operator("bim.add_filling", icon="ADD", text="")
+            if context.scene.VoidProperties.desired_opening:
+                op.opening = context.active_object.name
+                op.obj = context.scene.VoidProperties.desired_opening.name
+            if props.ifc_definition_id in Data.openings and Data.openings[props.ifc_definition_id]["HasFillings"]:
+                for filling_id in Data.openings[props.ifc_definition_id]["HasFillings"]:
+                    if filling_id not in Data.fillings:
+                        continue
+                    row = self.layout.row(align=True)
+                    row.label(text=Data.fillings[filling_id]["Name"], icon="SELECT_INTERSECT")
+                    op = row.operator("bim.remove_filling", icon="X", text="")
+                    op.obj = IfcStore.id_map[filling_id].name           
+        else:
             row = self.layout.row(align=True)
             if len(context.selected_objects) == 2:
                 op = row.operator("bim.add_opening", icon="ADD", text="Add Opening")