fixes some selection issues with ITree

svn changeset:2715/svn branch:trunk

diff --git a/src/com/itmill/toolkit/ui/Tree.java b/src/com/itmill/toolkit/ui/Tree.java
index 3c5552c256a7e28cad2066eaa8941df5d25d92df..c8a8b76a517c4bc1fdb476b48857ae16759363e1 100644 (file)
--- a/src/com/itmill/toolkit/ui/Tree.java
+++ b/src/com/itmill/toolkit/ui/Tree.java
@@ -425,6 +425,10 @@ public class Tree extends AbstractSelect implements Container.Hierarchical,
                                target.addAttribute("allownewitem", true);
                        }
 
+                       if (isNullSelectionAllowed()) {
+                               target.addAttribute("nullselect", true);
+                       }
+
                }
 
                // Initialize variables