--- a/ui/ui/tree.h	Sat Oct 18 09:43:05 2025 +0200
+++ b/ui/ui/tree.h	Sat Oct 18 10:17:59 2025 +0200
@@ -319,6 +319,18 @@
 UIEXPORT void ui_sublist_item_set_eventdata(UiSubListItem *item, void *eventdata);
 
 
+
+/*
+ * Only relevant for some language bindings
+ */
+typedef void(*ui_sourcelist_update_func)(void);
+
+/*
+ * The sourcelist update callback is called after any source list
+ * sublist update is completed
+ */
+UIEXPORT void ui_sourcelist_set_update_callback(ui_sourcelist_update_func cb);
+
 #ifdef	__cplusplus
 }
 #endif