Set window title

kittens/choose_files/main.go

@@ -50,6 +50,11 @@ type Handler struct {
 
 func (h *Handler) draw_screen() (err error) {
 	matches, in_progress := h.get_results()
+	if len(matches) > 0 {
+		h.lp.SetWindowTitle(matches[0].text)
+	} else {
+		h.lp.SetWindowTitle("Select a file") // TODO: make this conditional on mode
+	}
 	h.lp.StartAtomicUpdate()
 	defer h.lp.EndAtomicUpdate()
 	h.lp.ClearScreen()