From a8f681a71c5d2cc95221f10efee40ce6d28765f2 Mon Sep 17 00:00:00 2001
From: Sven Augustin <sven.augustin@psi.ch>
Date: Fri, 11 Dec 2020 18:04:18 +0100
Subject: [PATCH] InsertItems fails for empty sequence

---
 slic/gui/widgets.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/slic/gui/widgets.py b/slic/gui/widgets.py
index 81c37079..64b606c0 100644
--- a/slic/gui/widgets.py
+++ b/slic/gui/widgets.py
@@ -87,7 +87,8 @@ class ListDisplay(wx.ListBox):
     def __init__(self, parent, sequence):
         wx.ListBox.__init__(self, parent)
         sequence = sorted(set(str(i) for i in sequence))
-        self.InsertItems(sequence, 0)
+        if sequence:
+            self.InsertItems(sequence, 0)
 
         self.Bind(wx.EVT_LISTBOX_DCLICK, self.on_copy)