X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fviewmodel%2FAlignmentViewport.java;fp=src%2Fjalview%2Fviewmodel%2FAlignmentViewport.java;h=8fa14aefdf7d83617db41e83636e4104e2cb2d34;hb=a25f31a9140c9764baf76ec1c2ede98c1e3e52f9;hp=e5c7b4c225f82f13070858a812d249d0d31d8d9e;hpb=4b2be7cd8c14e67cc347609199e25c7f09fda988;p=jalview.git

diff --git a/src/jalview/viewmodel/AlignmentViewport.java b/src/jalview/viewmodel/AlignmentViewport.java
index e5c7b4c..8fa14ae 100644
--- a/src/jalview/viewmodel/AlignmentViewport.java
+++ b/src/jalview/viewmodel/AlignmentViewport.java
@@ -1073,7 +1073,8 @@ public abstract class AlignmentViewport implements AlignViewportI,
   }
 
   /**
-   * Set the selection group for this window.
+   * Set the selection group for this window. Also sets the current alignment as
+   * the context for the group, if it does not already have one.
    * 
    * @param sg
    *          - group holding references to sequences in this alignment view
@@ -1083,7 +1084,7 @@ public abstract class AlignmentViewport implements AlignViewportI,
   public void setSelectionGroup(SequenceGroup sg)
   {
     selectionGroup = sg;
-    if (sg != null)
+    if (sg != null && sg.getContext() == null)
     {
       sg.setContext(alignment);
     }