From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Thu, 19 Mar 2020 12:29:46 +0000 (+0000)
Subject: JAL-3305 don't propagate an empty SelectionGroup to complement view
X-Git-Tag: Develop-2_11_2_0-d20201215~75
X-Git-Url: http://source.jalview.org/gitweb/?a=commitdiff_plain;h=81029aa176cd9a4553e297f7be95931dddc89974;p=jalview.git

JAL-3305 don't propagate an empty SelectionGroup to complement view
---

diff --git a/src/jalview/gui/SeqPanel.java b/src/jalview/gui/SeqPanel.java
index 7020265..08e1194 100644
--- a/src/jalview/gui/SeqPanel.java
+++ b/src/jalview/gui/SeqPanel.java
@@ -2763,7 +2763,7 @@ public class SeqPanel extends JPanel
      * Map sequence selection
      */
     SequenceGroup sg = MappingUtils.mapSequenceGroup(seqsel, sourceAv, av);
-    av.setSelectionGroup(sg);
+    av.setSelectionGroup(sg != null && sg.getSize() > 0 ? sg : null);
     av.isSelectionGroupChanged(true);
 
     /*