@Override
	public void dragDropEnd(DragSourceDropEvent event) {
		if (event.getDropSuccess()) {
			if (!mDropReceived) {
				if ((event.getDropAction() & mAllowedRowDragTypes) == DnDConstants.ACTION_MOVE) {
					externalMoveDrop(event.getDragSourceContext().getTransferable());
				}
			}
		}
		setSourceDragColumn(null);
	}