Fix bug and add boolean tests where if you added a boolean that fully clipped something you couldn't edit it due to lack of item ids.

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

@@ -2888,6 +2888,15 @@ class ImportRepresentationItems(bpy.types.Operator, tool.Ifc.Operator):
         else:
             assert False, "Unexpected mesh type."
 
+        if not item_ids:
+            # It is possible that the user has created a shape that
+            # IfcOpenShell cannot render (i.e. boolean clipped everything), but
+            # we still want to edit items. I'm not sure the best way to handle
+            # this, but for now perhaps we can detect when there are no
+            # item_ids at all.
+            representation = tool.Ifc.get_entity(data)
+            item_ids = [i["item"].id() for i in ifcopenshell.util.representation.resolve_items(representation)]
+
         queue = list(set(item_ids))
         processed_ids = set()
         boolean_ids = set()

src/bonsai/pytest.ini

@@ -2,6 +2,7 @@
 markers =
     aggregate
     attribute
+    boolean
     brick
     classification
     context

src/bonsai/test/bim/feature/boolean.feature

@@ -0,0 +1,49 @@
+@boolean
+Feature: Boolean
+    Manage boolean hierarchies and boolean results
+
+Scenario: Ensure added booleans are marked as manual
+    Given an empty IFC project
+    And I open the "Add" menu
+    And I trigger "Add Element"
+    And I set the "Definition" property to "IfcElement"
+    And I set the "Class" property to "IfcFurniture"
+    And I set the "Representation" property to "Custom Extruded Solid"
+    And I click "OK"
+    And the object "IfcFurniture/Unnamed" exists
+    And I toggle edit mode
+    And the object "Item/IfcExtrudedAreaSolid/77" exists
+    And I open the "Add Item" menu
+    When I click "Half Space Solid"
+    And the object "Item/IfcHalfSpaceSolid/90" exists
+    And I deselect all objects
+    And I toggle edit mode
+    And I select the object "IfcFurniture/Unnamed"
+    And I look at the "Property Sets" panel
+    Then I see "BBIM_Boolean"
+    And I see "[91]"
+
+Scenario: Ensure removed booleans are unmarked as manual
+    Given an empty IFC project
+    And I open the "Add" menu
+    And I trigger "Add Element"
+    And I set the "Definition" property to "IfcElement"
+    And I set the "Class" property to "IfcFurniture"
+    And I set the "Representation" property to "Custom Extruded Solid"
+    And I click "OK"
+    And the object "IfcFurniture/Unnamed" exists
+    And I toggle edit mode
+    And the object "Item/IfcExtrudedAreaSolid/77" exists
+    And I open the "Add Item" menu
+    And I click "Half Space Solid"
+    And I deselect all objects
+    And I toggle edit mode
+    And I select the object "IfcFurniture/Unnamed"
+    And I toggle edit mode
+    And I select the object "Item/IfcHalfSpaceSolid/90"
+    When I delete the selected objects
+    And I toggle edit mode
+    And I select the object "IfcFurniture/Unnamed"
+    And I look at the "Property Sets" panel
+    Then I don't see "BBIM_Boolean"
+    And I don't see "[91]"