From a4148d028b8e2f9ae15cf31a6e2731dde8ea917c Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 23 May 2023 10:22:01 +0100
Subject: [PATCH] Add a method for deselecting all options

---
 src/textual/widgets/_selection_list.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/textual/widgets/_selection_list.py b/src/textual/widgets/_selection_list.py
index 846d0efe0..f0e4e37b0 100644
--- a/src/textual/widgets/_selection_list.py
+++ b/src/textual/widgets/_selection_list.py
@@ -302,6 +302,10 @@ class SelectionList(Generic[SelectionType], OptionList):
         self.refresh()
         return self
 
+    def deselect_all(self) -> Self:
+        """Deselect all items."""
+        return self._apply_to_all(self._deselect)
+
     def _toggle(self, value: SelectionType) -> None:
         """Toggle the selection state of the given value.