**As** a developer
**I want to** restrict the selection mode of the tree view to single select
**so that** I can use the tree view for hierarchical selections, where only a single selection is allowed.

**Acceptance criteria**

Begin of the insertion**TreeView**

End of the insertion * Begin of the insertionThere isEnd of the insertion Begin of the deletion The developer must be able to configure the tree view component toEnd of the deletion a Begin of the insertionnew `select_variant` called `single`End of the insertion Begin of the deletion selection variant of type "single".End of the deletion

* Begin of the insertionThis variant alows only one itemEnd of the insertion Begin of the deletion If the tree view is setEnd of the deletion to Begin of the insertionbe selected

End of the insertion Begin of the deletion single select, the filterable tree view must hide the "include subitems" option.

End of the deletion * If the tree view is set to single select and a user selects another item, the previous selected one must get deselected. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * Begin of the insertionThe Tree View is still submittable via a form (submitting onlyEnd of the insertion Begin of the deletion OnlyEnd of the deletion one Begin of the insertionvalue)

* \[Open\]: Shall we still show checkboxes or rather click-to-select (see technical notes below)End of the insertion Begin of the deletion selection must be possible at any time.End of the deletion


Begin of the insertion**FilterableTreeView**

* If the tree view is set to single select, the filterable tree view must hide the "include subitems" option.


End of the insertion **Technical notes**

* Should we consider of NOT showing checkboxes? Should we maybe reuse the `current` state for the selection?