X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FStructureViewerBase.java;h=808150fa1cbbdf746644e0a995b808b858ddabbc;hb=20bb45279db7745e7d0062c1084f97644c60db19;hp=34ad659402361ea2c50394a9356a3117003b6e67;hpb=f831ddf7f52d6c4a1918e87d94877b22bd322648;p=jalview.git

diff --git a/src/jalview/gui/StructureViewerBase.java b/src/jalview/gui/StructureViewerBase.java
index 34ad659..808150f 100644
--- a/src/jalview/gui/StructureViewerBase.java
+++ b/src/jalview/gui/StructureViewerBase.java
@@ -110,6 +110,8 @@ public abstract class StructureViewerBase extends GStructureViewer
 
   protected boolean allChainsSelected = false;
 
+  protected JMenu viewSelectionMenu;
+
   /**
    * Default constructor
    */
@@ -744,17 +746,17 @@ public abstract class StructureViewerBase extends GStructureViewer
       @Override
       public void itemStateChanged(ItemEvent e)
       {
-        alignStructs.setEnabled(_alignwith.size() > 0);
+        alignStructs.setEnabled(!_alignwith.isEmpty());
         alignStructs.setToolTipText(MessageManager.formatMessage(
                 "label.align_structures_using_linked_alignment_views",
                 new String[] { String.valueOf(_alignwith.size()) }));
       }
     };
-    JMenu alpanels = new ViewSelectionMenu(
+    viewSelectionMenu = new ViewSelectionMenu(
             MessageManager.getString("label.superpose_with"), this,
             _alignwith, handler);
     handler.itemStateChanged(null);
-    viewerActionMenu.add(alpanels);
+    viewerActionMenu.add(viewSelectionMenu);
     viewerActionMenu.addMenuListener(new MenuListener()
     {
       @Override