From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Thu, 10 Dec 2020 16:08:09 +0000 (+0000)
Subject: JAL-3784 null the right overview reference when it is closed
X-Git-Tag: Release_2_11_3_0~18^2~20^2~2
X-Git-Url: http://source.jalview.org/gitweb/?a=commitdiff_plain;h=e3944f6873e7855afb284bb2f0251cd4e7fc1637;p=jalview.git

JAL-3784 null the right overview reference when it is closed
---

diff --git a/src/jalview/gui/AlignFrame.java b/src/jalview/gui/AlignFrame.java
index 42c0df0..2c079b8 100644
--- a/src/jalview/gui/AlignFrame.java
+++ b/src/jalview/gui/AlignFrame.java
@@ -3402,6 +3402,7 @@ public class AlignFrame extends GAlignFrame implements DropTargetListener,
             true, true);
     frame.pack();
     frame.setLayer(JLayeredPane.PALETTE_LAYER);
+    final AlignmentPanel thePanel = this.alignPanel; 
     frame.addInternalFrameListener(
             new javax.swing.event.InternalFrameAdapter()
             {
@@ -3410,7 +3411,7 @@ public class AlignFrame extends GAlignFrame implements DropTargetListener,
                       javax.swing.event.InternalFrameEvent evt)
               {
                 overview.dispose();
-                alignPanel.setOverviewPanel(null);
+                thePanel.setOverviewPanel(null);
               }
             });
     if (getKeyListeners().length > 0)