Bug 293130 Polishing the Filter extension point
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
/*
		 * (non-Javadoc)
		 * 
		 * @see
		 * org.eclipse.swt.dnd.DragSourceListener#dragFinished(org.eclipse.swt
		 * .dnd.DragSourceEvent)
		 */
		public void dragFinished(DragSourceEvent event) {
			if (event.detail == DND.DROP_MOVE) {
				
			}
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see
		 * org.eclipse.swt.dnd.DragSourceListener#dragSetData(org.eclipse.swt
		 * .dnd.DragSourceEvent)
		 */
		public void dragSetData(DragSourceEvent event) {
			if (filterCopyTransfer.isSupportedType(event.dataType)) {
				event.data = getFilterCopySelection();
			}
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see
		 * org.eclipse.swt.dnd.DragSourceListener#dragStart(org.eclipse.swt.
		 * dnd.DragSourceEvent)