Use clever Blender length props for editing representation item extrusion depth

Example - https://imgchest.com/p/ljyqzpmwoy2

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

@@ -2528,6 +2528,7 @@ class ImportRepresentationItems(bpy.types.Operator, tool.Ifc.Operator):
 class UpdateItemAttributes(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.update_item_attributes"
     bl_label = "Update Item Attributes"
+    bl_description = "Update item attributes in IFC and reload mesh for representation item"
     bl_options = {"REGISTER", "UNDO"}
 
     def _execute(self, context):

src/bonsai/bonsai/bim/module/model/workspace.py

@@ -274,7 +274,7 @@ class EditItemUI:
             return
         for item_attribute in obj.data.BIMMeshProperties.item_attributes:
             row = cls.layout.row()
-            row.prop(item_attribute, "float_value", text=item_attribute.name)
+            row.prop(item_attribute, item_attribute.get_value_name(display_only=True), text=item_attribute.name)
         if len(obj.data.BIMMeshProperties.item_attributes):
             row = cls.layout.row()
             row.operator("bim.update_item_attributes", icon="FILE_REFRESH", text="")

src/bonsai/bonsai/bim/prop.py

@@ -328,6 +328,11 @@ class Attribute(PropertyGroup):
             assert_never(data_type)
 
     def get_value_name(self, display_only: bool = False) -> str:
+        """Get name of the value attribute.
+
+        :param display_only: Should be `True` if the value won't be accessed directly
+            by this name, only through UI (e.g. with `layout.prop`).
+        """
         data_type = self.data_type
         if data_type == "string":
             return "string_value"

src/bonsai/bonsai/tool/geometry.py

@@ -48,9 +48,12 @@ from collections import defaultdict
 from math import radians, pi
 from mathutils import Vector, Matrix
 from bonsai.bim.ifc import IfcStore
-from typing import Union, Iterable, Optional, Literal, Iterator, List
+from typing import Union, Iterable, Optional, Literal, Iterator, List, TYPE_CHECKING
 from typing_extensions import TypeIs
 
+if TYPE_CHECKING:
+    from bonsai.bim.prop import Attribute
+
 
 class Geometry(bonsai.core.tool.Geometry):
     @classmethod
@@ -1500,8 +1503,10 @@ class Geometry(bonsai.core.tool.Geometry):
         props.item_attributes.clear()
         item = tool.Ifc.get().by_id(props.ifc_definition_id)
         if item.is_a("IfcExtrudedAreaSolid"):
-            new = props.item_attributes.add()
+            new: Attribute = props.item_attributes.add()
             new.name = "Depth"
+            new.data_type = "float"
+            new.special_type = "LENGTH"
             new.float_value = item.Depth
 
     @classmethod