api usecase to change nest

src/ifcopenshell-python/ifcopenshell/api/nest/change_nest.py

@@ -0,0 +1,39 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021-2022 Dion Moult <dion@thinkmoult.com>, Yassine Oualid <yassine@sigmadimensions.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcopenshell
+import ifcopenshell.api
+
+class Usecase:
+    def __init__(self, file, item=None, new_parent=None):
+        """Assigns a cost item to a new parent cost item"""
+        self.file = file
+        self.settings = {"item": item, "new_parent": new_parent}
+
+    def execute(self):
+        if not self.settings["item"].Nests:
+            return
+        nests = self.settings["item"].Nests[0]
+        related_objects = list(nests.RelatedObjects)
+        related_objects.remove(self.settings["item"])
+        if related_objects:
+            nests.RelatedObjects = related_objects
+            ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": nests})
+        else:
+            self.file.remove(nests)
+        ifcopenshell.api.run("nest.assign_object", self.file, related_object=self.settings["item"], relating_object=self.settings["new_parent"])