MenuItem moveRowUp = new MenuItem(popupMenu, SWT.PUSH);
        moveRowUp.addSelectionListener(new SelectionAdapter() {

            /**
             * Move an item up
             */
            @Override
            public void widgetSelected(SelectionEvent e) {
                NatEventData natEventData = MenuItemProviders.getNatEventData(e);
                // Get the position of the selected element
                NatTable natTable = natEventData.getNatTable();
                int pos = natEventData.getRowPosition();  // count without header row
                // Do not move one single item
                if (natTable.getRowCount() > 2 && pos > 0) {  // the header row has to be added for this calculation!
                    ILayerCommand cmd = new RowReorderCommand(natTable, pos, pos - 1);
                    natTable.doCommand(cmd);
                }
           }
        });

        moveRowDown.addSelectionListener(new SelectionAdapter() {
        @Override
            public void widgetSelected(SelectionEvent e) {
                NatEventData natEventData = MenuItemProviders.getNatEventData(e);
                // Get the position of the selected element
                NatTable natTable = natEventData.getNatTable();
                int pos = natEventData.getRowPosition();  // count without header row
                // Do not move one single item
                if (natTable.getRowCount() > 2 && pos < natTable.getRowCount()) {  // the header row has to be added for this calculation!
                    ILayerCommand cmd = new RowReorderCommand(natTable, pos, pos + 1);
                    natTable.doCommand(cmd);
                }
            }
        });