Date picker UI for IfcDate type attributes

Example - https://imgchest.com/p/5xy2bekl3yl

set_prop_from_path method got from https://blenderartists.org/t/set-property-using-path-from-path-from-id-prop-path-resolve/1559166

src/bonsai/bonsai/bim/helper.py

@@ -95,6 +95,10 @@ def draw_attribute(
     if attribute.is_uri:
         op = layout.operator("bim.select_uri_attribute", text="", icon="FILE_FOLDER")
         op.data_path = attribute.path_from_id("string_value")
+    elif attribute.special_type == "DATE":
+        op = layout.operator("bim.datepicker", text="", icon="TIME")
+        op.target_prop = attribute.path_from_id("string_value")
+
     if attribute.is_optional:
         layout.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
 
@@ -161,6 +165,8 @@ def import_attribute(
         new.string_value = "" if new.is_null else str(data[attribute.name()]).replace("\n", "\\n")
         if attribute.type_of_attribute().declared_type().name() == "IfcURIReference":
             new.is_uri = True
+        elif attribute.type_of_attribute()._is("IfcDate"):
+            new.special_type = "DATE"
     elif data_type == "boolean":
         new.bool_value = False if new.is_null else bool(data[attribute.name()])
     elif data_type == "integer":

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

@@ -1215,17 +1215,13 @@ class Bonsai_DatePicker(bpy.types.Operator):
         context.scene.DatePickerProperties.selected_date = self.display_date
         return context.window_manager.invoke_props_dialog(self)
 
-    def get_scene_prop(self, prop_path):
-        prop = bpy.context.scene.get(prop_path.split(".")[0])
-        for part in prop_path.split(".")[1:]:
-            if part:
-                prop = prop.get(part)
-        return prop
+    def get_scene_prop(self, prop_path: str) -> str:
+        scene = bpy.context.scene
+        return scene.path_resolve(prop_path)
 
-    def set_scene_prop(self, prop_path, value):
-        parent = self.get_scene_prop(prop_path[: prop_path.rfind(".")])
-        prop = prop_path.split(".")[-1]
-        parent[prop] = value
+    def set_scene_prop(self, prop_path: str, value: str) -> None:
+        scene = bpy.context.scene
+        tool.Blender.set_prop_from_path(scene, prop_path, value)
 
 
 class Bonsai_DatePickerSetDate(bpy.types.Operator):

src/bonsai/bonsai/tool/blender.py

@@ -31,7 +31,7 @@ import importlib
 from mathutils import Vector
 from pathlib import Path
 from bonsai.bim.ifc import IFC_CONNECTED_TYPE
-from typing import Any, Optional, Union, Literal, Iterable, Callable
+from typing import Any, Optional, Union, Literal, Iterable, Callable, TypeVar
 from typing_extensions import assert_never
 
 
@@ -1257,3 +1257,18 @@ class Blender(bonsai.core.tool.Blender):
         obj.constraints.clear()
         obj.matrix_world = matrix
         return True
+
+    @classmethod
+    def set_prop_from_path(cls, bpy_object: bpy.types.bpy_struct, prop_path: str, value: Any) -> None:
+        """Set `data_block` property value using path from `path_from_id`."""
+
+        T = TypeVar("T", bound=bpy.types.bpy_struct)
+
+        def path_resolve(obj: T, prop_path: str) -> tuple[T, str]:
+            if "." in prop_path:
+                extra_path, prop_path = prop_path.rsplit(".", 1)
+                obj = obj.path_resolve(extra_path)
+            return obj, prop_path
+
+        obj, path = path_resolve(bpy_object, prop_path)
+        setattr(obj, path, value)

src/bonsai/bonsai/tool/sequence.py

@@ -506,15 +506,10 @@ class Sequence(bonsai.core.tool.Sequence):
 
     @classmethod
     def load_work_time_attributes(cls, work_time: ifcopenshell.entity_instance) -> None:
-        def callback(name, prop, data):
-            if name in ["Start", "Finish"]:
-                prop.string_value = "" if prop.is_null else data[name]
-                return True
-
         props = bpy.context.scene.BIMWorkCalendarProperties
         props.work_time_attributes.clear()
 
-        bonsai.bim.helper.import_attributes2(work_time, props.work_time_attributes, callback)
+        bonsai.bim.helper.import_attributes2(work_time, props.work_time_attributes)
 
     @classmethod
     def enable_editing_work_time(cls, work_time: ifcopenshell.entity_instance) -> None: