small enhancements + developing web desktop test

svn changeset:11757/svn branch:6.3

1 files changed, 12 insertions, 0 deletions

diff --git a/src/com/vaadin/event/dd/acceptCriteria/IsSameSourceAndTarget.java b/src/com/vaadin/event/dd/acceptCriteria/IsSameSourceAndTarget.java
index 73609e592b..5f4d3db116 100644
--- a/src/com/vaadin/event/dd/acceptCriteria/IsSameSourceAndTarget.java
+++ b/src/com/vaadin/event/dd/acceptCriteria/IsSameSourceAndTarget.java
@@ -21,6 +21,11 @@ import com.vaadin.ui.Component;
 @ClientCriterion(VSourceIsSameAsTarget.class)
 public class IsSameSourceAndTarget extends ClientSideCriterion {
 
+    private static IsSameSourceAndTarget instance;
+
+    private IsSameSourceAndTarget() {
+    }
+
     public boolean accepts(DragAndDropEvent dragEvent) {
         if (dragEvent.getTransferable() instanceof TransferableImpl) {
             Component sourceComponent = ((TransferableImpl) dragEvent
@@ -32,4 +37,11 @@ public class IsSameSourceAndTarget extends ClientSideCriterion {
         return false;
     }
 
+    public static IsSameSourceAndTarget get() {
+        if (instance == null) {
+            instance = new IsSameSourceAndTarget();
+        }
+        return instance;
+    }
+
 }
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