Bonsai - fix issues with default ifcpatch recipe is not loading properly #5540

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

@@ -67,6 +67,9 @@ class ExecuteIfcPatch(bpy.types.Operator):
     @classmethod
     def poll(cls, context):
         props = context.scene.BIMPatchProperties
+        if props.ifc_patch_recipes == "-":
+            cls.poll_message_set("No recipe selected.")
+            return False
         if not props.should_load_from_memory and not props.ifc_patch_input:
             cls.poll_message_set("Select an IFC file or use 'load from memory' if it's loaded in Bonsai.")
             return False

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

@@ -47,6 +47,10 @@ def get_ifcpatch_recipes(self, context):
     global ifcpatchrecipes_enum
     if len(ifcpatchrecipes_enum) < 1:
         ifcpatchrecipes_enum.clear()
+        # Have to add a blank entry because otherwise default recipe might be not loaded
+        # properly (need to ensure bim.update_ifc_patch_arguments will be called). See #5540.
+        ifcpatchrecipes_enum.append(("-", "-", ""))
+
         ifcpatch_path = Path(importlib.util.find_spec("ifcpatch").submodule_search_locations[0])
         for filename in ifcpatch_path.joinpath("recipes").glob("*.py"):
             f = str(filename.stem)