JAL-2001 return copy of selection in getSelected()

[jalview.git] / src / jalview / datamodel / ColumnSelection.java

diff --git a/src/jalview/datamodel/ColumnSelection.java b/src/jalview/datamodel/ColumnSelection.java
index aaf70b8..47acbd0 100644 (file)
--- a/src/jalview/datamodel/ColumnSelection.java
+++ b/src/jalview/datamodel/ColumnSelection.java
@@ -290,11 +290,12 @@ public class ColumnSelection
   /**
    * Returns a list of selected columns. The list contains no duplicates but is
    * not necessarily ordered. It also may include columns hidden from the
-   * current view
+   * current view. This returns a copy of the actual list, and changes to the
+   * copy will not affect the selection.
    */
   public List<Integer> getSelected()
   {
-    return selection.getList();
+    return new ArrayList<Integer>(selection.getList());
   }
 
   /**