@Override
public void render(Listitem item, Object data) throws Exception {
final Customer customer = (Customer) data;
Listcell lc = new Listcell(customer.getKunNr());
lc.setParent(item);
lc = new Listcell(customer.getKunMatchcode());
lc.setParent(item);
lc = new Listcell(customer.getKunName1());
lc.setParent(item);
lc = new Listcell(customer.getKunName2());
lc.setParent(item);
lc = new Listcell(customer.getKunOrt());
lc.setParent(item);
ComponentsCtrl.applyForward(lc, "onMouseOver=onMouseOverListCell");
lc = new Listcell();
final Checkbox cb = new Checkbox();
cb.setDisabled(true);
cb.setChecked(customer.getKunMahnsperre());
lc.appendChild(cb);
lc.setParent(item);
item.setAttribute("data", data);
ComponentsCtrl.applyForward(item, "onDoubleClick=onCustomerItemDoubleClicked");
}