set_material_name to prevent triggering name callback if it's not necessary

src/bonsai/bonsai/bim/handler.py

@@ -56,9 +56,13 @@ def name_callback(obj: Union[bpy.types.Object, bpy.types.Material], data: str) -
         return
 
     if isinstance(obj, bpy.types.Material):
-        if ifc_definition_id := obj.BIMStyleProperties.ifc_definition_id:
+        props = obj.BIMStyleProperties
+        if ifc_definition_id := props.ifc_definition_id:
+            if props.is_renaming:
+                props.is_renmaing = False
+                return
             IfcStore.get_file().by_id(ifc_definition_id).Name = obj.name
-        refresh_ui_data()
+            refresh_ui_data()
         return
 
     if not obj.BIMObjectProperties.ifc_definition_id:

src/bonsai/bonsai/bim/module/style/operator.py

@@ -848,7 +848,8 @@ class EditSurfaceStyle(bpy.types.Operator, tool.Ifc.Operator):
             new_name = attributes_data["Name"]
             if new_name != original_name:
                 material = tool.Ifc.get_object(self.surface_style)
-                material.name = new_name or "Unnamed"
+                assert isinstance(material, bpy.types.Material)
+                tool.Root.set_material_name(material, new_name or "Unnamed")
         else:
             attributes = tool.Style.get_style_ui_props_attributes(self.surface_style.is_a())
             assert attributes

src/bonsai/bonsai/bim/module/style/prop.py

@@ -294,3 +294,4 @@ class BIMStyleProperties(PropertyGroup):
         default="Shading",
         update=update_shading_style,
     )
+    is_renaming: BoolProperty(description="Used to prevent triggering handler callback.", default=False)

src/bonsai/bonsai/tool/root.py

@@ -402,6 +402,15 @@ class Root(bonsai.core.tool.Root):
             obj.BIMObjectProperties.is_renaming = True
             obj.name = name  # The handler will trigger, and reset is_renaming to False
 
+    @classmethod
+    def set_material_name(cls, material: bpy.types.Material, name: str) -> None:
+        """Rename material without triggerring name callback and unnecessary writing to IFC."""
+        if material.name == name:
+            return
+        props = material.BIMStyleProperties
+        props.is_renaming = True
+        material.name = name  # The handler will trigger, and reset is_renaming to False.
+
     @classmethod
     def unlink_object(cls, obj: bpy.types.Object) -> None:
         """Purge all IFC data associated with a Blender object.