X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fjbgui%2FGStructureViewer.java;h=d8f3f611877d68b663879ed6b6939809469b8865;hb=bdf1428136ce701e58a90f346973dbdf9d42b316;hp=5c7a31a8bcff68d7c0c03c8cd3e31c44e9da0b93;hpb=2e18e422cead591bd9a1df295f1897b3e346a480;p=jalview.git

diff --git a/src/jalview/jbgui/GStructureViewer.java b/src/jalview/jbgui/GStructureViewer.java
index 5c7a31a..d8f3f61 100644
--- a/src/jalview/jbgui/GStructureViewer.java
+++ b/src/jalview/jbgui/GStructureViewer.java
@@ -219,9 +219,8 @@ public abstract class GStructureViewer extends JInternalFrame implements
   {
   }
 
-  protected void alignStructs_actionPerformed(ActionEvent actionEvent)
-  {
-  }
+  protected abstract String alignStructs_actionPerformed(
+          ActionEvent actionEvent);
 
   public void pdbFile_actionPerformed(ActionEvent actionEvent)
   {