You can now add and remove work plans with a new UI. Thanks @bosonprojets and @jesusbill!

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

@@ -0,0 +1,42 @@
+import ifcopenshell.api
+import ifcopenshell.util.date
+from datetime import datetime
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"name": None, "predefined_type": "NOTDEFINED", "start_time": datetime.now()}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        work_plan = ifcopenshell.api.run(
+            "root.create_entity",
+            self.file,
+            ifc_class="IfcWorkPlan",
+            predefined_type=self.settings["predefined_type"],
+            name=self.settings["name"],
+        )
+        work_plan.CreationDate = ifcopenshell.util.date.datetime2ifc(datetime.now(), "IfcDateTime")
+        person = ifcopenshell.api.owner.settings.get_person(self.file)
+        if person:
+            work_plan.Creators = [person]
+        work_plan.StartTime = ifcopenshell.util.date.datetime2ifc(self.settings["start_time"], "IfcDateTime")
+
+        context = self.file.by_type("IfcContext")[0]
+        if context.Declares:
+            rel_declares = context.Declares[0]
+            ifcopenshell.api.run("owner.update_owner_history", self.file, element=rel_declares)
+        else:
+            rel_declares = self.file.create_entity("IfcRelDeclares", **{
+                "GlobalId": ifcopenshell.guid.new(),
+                "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
+                "RelatingContext": context
+            })
+
+        related_definitions = list(rel_declares.RelatedDefinitions or [])
+        related_definitions.append(work_plan)
+        rel_declares.RelatedDefinitions = related_definitions
+
+        return work_plan