i have folowing grid Cell:
ComboBoxCell<RequestStatus> statusCombo = new ComboBoxCell<RequestStatus>(status, new LabelProvider<RequestStatus>() {
@Override
public String getLabel(RequestStatus item) {
return item.getLabel();
}

});
RequestStatus : APPROVED, REJECTED, PENDING
How can i disabel the seletion when the status eqeulst APPROVED ??