1 files changed, 28 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/dnd/DNDDropAdapter.java b/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/dnd/DNDDropAdapter.java
index 7d79125ef3..5d67bff36f 100644
--- a/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/dnd/DNDDropAdapter.java
+++ b/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/dnd/DNDDropAdapter.java
@@ -12,6 +12,7 @@ package org.eclipse.net4j.util.ui.dnd;
 
 import org.eclipse.jface.viewers.StructuredViewer;
 import org.eclipse.jface.viewers.ViewerDropAdapter;
+import org.eclipse.swt.dnd.DropTargetEvent;
 import org.eclipse.swt.dnd.Transfer;
 import org.eclipse.swt.dnd.TransferData;
 
@@ -22,6 +23,8 @@ public abstract class DNDDropAdapter<TYPE> extends ViewerDropAdapter
 {
   private Transfer transfer;
 
+  private boolean dropBetweenEnabled;
+
   protected DNDDropAdapter(Transfer transfer, StructuredViewer viewer)
   {
     super(viewer);
@@ -39,6 +42,31 @@ public abstract class DNDDropAdapter<TYPE> extends ViewerDropAdapter
     return (StructuredViewer)super.getViewer();
   }
 
+  public boolean isDropBetweenEnabled()
+  {
+    return dropBetweenEnabled;
+  }
+
+  public void setDropBetweenEnabled(boolean dropBetweenEnabled)
+  {
+    this.dropBetweenEnabled = dropBetweenEnabled;
+  }
+
+  @Override
+  protected int determineLocation(DropTargetEvent event)
+  {
+    int location = super.determineLocation(event);
+    if (location == LOCATION_BEFORE || location == LOCATION_AFTER)
+    {
+      if (!dropBetweenEnabled)
+      {
+        location = LOCATION_ON;
+      }
+    }
+
+    return location;
+  }
+
   @Override
   public boolean performDrop(Object data)
   {