X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FTreePanel.java;h=2d8e729c2c54833082ed5f8366e8b408d15f46ec;hb=23ee7da5cfaf882b4f443bdca1b6a7e6e9fc5196;hp=30604cbfa8711fcb0bf2fe47f8aa2614d5020a2a;hpb=fab0afc9e1e7a5ca460f0cbd48545536f989a435;p=jalview.git

diff --git a/src/jalview/gui/TreePanel.java b/src/jalview/gui/TreePanel.java
index 30604cb..2d8e729 100755
--- a/src/jalview/gui/TreePanel.java
+++ b/src/jalview/gui/TreePanel.java
@@ -159,6 +159,7 @@ public class TreePanel extends GTreePanel
         {
           av.removePropertyChangeListener(listener);
         }
+        releaseReferences();
       }
     });
 
@@ -168,6 +169,17 @@ public class TreePanel extends GTreePanel
   }
 
   /**
+   * Ensure any potentially large object references are nulled
+   */
+  public void releaseReferences()
+  {
+    this.tree = null;
+    this.treeCanvas.tree = null;
+    this.treeCanvas.nodeHash = null;
+    this.treeCanvas.nameHash = null;
+  }
+
+  /**
    * @return
    */
   protected PropertyChangeListener addAlignmentListener()
@@ -709,20 +721,20 @@ public class TreePanel extends GTreePanel
           if (sq != null)
           {
             // search dbrefs, features and annotation
-            DBRefEntry[] refs = jalview.util.DBRefUtils
+            List<DBRefEntry> refs = jalview.util.DBRefUtils
                     .selectRefs(sq.getDBRefs(), new String[]
                     { labelClass.toUpperCase() });
             if (refs != null)
             {
-              for (int i = 0; i < refs.length; i++)
+              for (int i = 0, ni = refs.size(); i < ni; i++)
               {
                 if (newname == null)
                 {
-                  newname = new String(refs[i].getAccessionId());
+                  newname = new String(refs.get(i).getAccessionId());
                 }
                 else
                 {
-                  newname = newname + "; " + refs[i].getAccessionId();
+                  newname += "; " + refs.get(i).getAccessionId();
                 }
               }
             }
@@ -784,7 +796,7 @@ public class TreePanel extends GTreePanel
     /*
      * put them together as <method> Using <model>
      */
-    final String ttl = MessageManager.formatMessage("label.treecalc_title",
+    final String ttl = MessageManager.formatMessage("label.calc_title",
             treecalcnm, smn);
     return ttl;
   }