Implement inherited calendars in the sequencing task tree

src/blenderbim/blenderbim/bim/module/sequence/helper.py

@@ -86,9 +86,32 @@ def derive_date(ifc_definition_id, attribute_name, date=None, is_earliest=False,
         if current_date:
             return current_date
     for subtask in task["RelatedObjects"]:
-        current_date = derive_date(
-            subtask, attribute_name, date=date, is_earliest=is_earliest, is_latest=is_latest
-        )
+        current_date = derive_date(subtask, attribute_name, date=date, is_earliest=is_earliest, is_latest=is_latest)
+        if is_earliest:
+            if current_date and (date is None or current_date < date):
+                date = current_date
+        if is_latest:
+            if current_date and (date is None or current_date > date):
+                date = current_date
+    return date
+
+
+def derive_calendar(ifc_definition_id):
+    task = Data.tasks[ifc_definition_id]
+    if task["HasAssignmentsWorkCalendar"]:
+        return Data.work_calendars[task["HasAssignmentsWorkCalendar"][0]]
+    if task["Nests"]:
+        return derive_calendar(task["Nests"][0])
+
+
+def derive_duration(ifc_definition_id, attribute_name):
+    task = Data.tasks[ifc_definition_id]
+    if task["TaskTime"]:
+        current_date = Data.task_times[task["TaskTime"]][attribute_name]
+        if current_date:
+            return current_date
+    for subtask in task["RelatedObjects"]:
+        current_date = derive_date(subtask, attribute_name, date=date, is_earliest=is_earliest, is_latest=is_latest)
         if is_earliest:
             if current_date and (date is None or current_date < date):
                 date = current_date

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

@@ -291,6 +291,14 @@ class LoadTaskProperties(bpy.types.Operator):
                 item.is_successor = self.props.active_task_id in [
                     Data.sequences[r]["RelatingProcess"] for r in task["IsSuccessorFrom"]
                 ]
+
+            calendar = helper.derive_calendar(item.ifc_definition_id)
+            if task["HasAssignmentsWorkCalendar"]:
+                item.calendar = calendar["Name"] or "Unnamed"
+            else:
+                item.calendar = ""
+                item.derived_calendar = calendar["Name"] or "Unnamed" if calendar else ""
+
             if task["TaskTime"]:
                 task_time = Data.task_times[task["TaskTime"]]
                 item.start = self.canonicalise_time(task_time["ScheduleStart"])
@@ -309,10 +317,7 @@ class LoadTaskProperties(bpy.types.Operator):
                 item.start = "-"
                 item.finish = "-"
                 item.duration = "-"
-            if task["HasAssignmentsWorkCalendar"]:
-                item.calendar = Data.work_calendars[task["HasAssignmentsWorkCalendar"][0]]["Name"] or "Unnamed"
-            else:
-                item.calendar = ""
+
         self.props.is_task_update_enabled = True
         return {"FINISHED"}
 
@@ -1069,7 +1074,10 @@ class EditTaskCalendar(bpy.types.Operator):
             },
         )
         Data.load(IfcStore.get_file())
-        bpy.ops.bim.load_task_properties(task=self.task)
+        if Data.tasks[self.task]["RelatedObjects"]:
+            bpy.ops.bim.load_task_properties()
+        else:
+            bpy.ops.bim.load_task_properties(task=self.task)
         return {"FINISHED"}
 
 
@@ -1090,7 +1098,10 @@ class RemoveTaskCalendar(bpy.types.Operator):
             },
         )
         Data.load(IfcStore.get_file())
-        bpy.ops.bim.load_task_properties(task=self.task)
+        if Data.tasks[self.task]["RelatedObjects"]:
+            bpy.ops.bim.load_task_properties()
+        else:
+            bpy.ops.bim.load_task_properties(task=self.task)
         return {"FINISHED"}
 
 

src/blenderbim/blenderbim/bim/module/sequence/prop.py

@@ -156,10 +156,11 @@ class Task(PropertyGroup):
     duration: StringProperty(name="Duration")
     start: StringProperty(name="Start", update=updateTaskTimeStart)
     finish: StringProperty(name="Finish", update=updateTaskTimeFinish)
+    calendar: StringProperty(name="Calendar")
     derived_start: StringProperty(name="Derived Start")
     derived_finish: StringProperty(name="Derived Finish")
     derived_duration: StringProperty(name="Derived Duration")
-    calendar: StringProperty(name="Calendar")
+    derived_calendar: StringProperty(name="Derived Calendar")
     is_predecessor: BoolProperty(name="Is Predecessor")
     is_successor: BoolProperty(name="Is Successor")
 

src/blenderbim/blenderbim/bim/module/sequence/ui.py

@@ -338,7 +338,10 @@ class BIM_UL_tasks(UIList):
                     row.prop(item, "duration", emboss=False, text="")
 
             if props.should_show_calendars:
-                row.label(text=item.calendar)
+                if item.derived_calendar:
+                    row.label(text=item.derived_calendar + "*")
+                else:
+                    row.label(text=item.calendar or "-")
 
             if context.active_object:
                 oprops = context.active_object.BIMObjectProperties

src/ifcopenshell-python/ifcopenshell/api/sequence/data.py

@@ -133,6 +133,7 @@ class Data:
                 data["TaskTime"] = data["TaskTime"].id()
             for rel in task.IsNestedBy:
                 [data["RelatedObjects"].append(o.id()) for o in rel.RelatedObjects if o.is_a("IfcTask")]
+            data["Nests"] = [r.RelatingObject.id() for r in task.Nests or []]
             [
                 data["RelatingProducts"].append(r.RelatingProduct.id())
                 for r in task.HasAssignments