private void appendCode(final Row row) {
final ExpenseSheetLine line = (ExpenseSheetLine) row.getValue();
final Textbox code = new Textbox();
code.setWidth("170px");
code.setDisabled(getExpenseSheet().isCodeAutogenerated());
code.applyProperties();
if (line.getCode() != null) {
code.setValue(line.getCode());
}