Fix #1337. Changing the name of a Blender object now also auto changes its IFC name.

src/ifcblenderexport/blenderbim/bim/handler.py

@@ -3,6 +3,7 @@ import json
 import blenderbim.bim.decoration as decoration
 from bpy.app.handlers import persistent
 from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.attribute.data import Data as AttributeData
 
 
 def mode_callback(obj, data):
@@ -19,6 +20,17 @@ def mode_callback(obj, data):
         bpy.ops.bim.update_mesh_representation(obj=obj.name)
 
 
+def name_callback(obj, data):
+    # Blender material names are up to 63 UTF-8 bytes
+    if not obj.BIMObjectProperties.ifc_definition_id or "/" not in obj.name or len(bytes(obj.name, "utf-8")) >= 63:
+        return
+    element = IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id)
+    if not element.is_a("IfcRoot"):
+        return
+    element.Name = "/".join(obj.name.split("/")[1:])
+    AttributeData.load(obj.BIMObjectProperties.ifc_definition_id)
+
+
 def subscribe_to(object, data_path, callback):
     subscribe_to = object.path_resolve(data_path, False)
     bpy.msgbus.subscribe_rna(

src/ifcblenderexport/blenderbim/bim/ifc.py

@@ -38,6 +38,7 @@ class IfcStore:
             IfcStore.guid_map[element.GlobalId] = obj
         obj.BIMObjectProperties.ifc_definition_id = element.id()
         blenderbim.bim.handler.subscribe_to(obj, "mode", blenderbim.bim.handler.mode_callback)
+        blenderbim.bim.handler.subscribe_to(obj, "name", blenderbim.bim.handler.name_callback)
 
     @staticmethod
     def unlink_element(element, obj=None):