public virtual bool RemoveCashier(AbstractCashier cashier)
{
if (cashier == null)
{
throw new ArgumentNullException(nameof(cashier));
}
if (!_cashiers.Remove(cashier))
{
return(false);
}
CashierRemoved(this, cashier);
return(true);
}
public virtual void AddCashier(AbstractCashier cashier)
{
if (cashier == null)
{
throw new ArgumentNullException(nameof(cashier));
}
if (_cashiers.Contains(cashier))
{
throw new ArgumentException("Cashier already contained in cashiers list.", nameof(cashier));
}
_cashiers.Add(cashier);
CashierAdded(this, cashier);
}
public override bool OrderTo(TypePizza menu, ref decimal money, Action <Func <AbstractPizza> > CallBackPizza)
{
AbstractCashier cashier = null;
foreach (var item in _worker)
{
if (item is AbstractCashier)
{
cashier = (AbstractCashier)item;
}
}
if (cashier != null)
{
return(cashier.TakeOrder(menu, ref money, ref _money, CallBackPizza));
}
return(false);
}
private void OnCashierRemoved(object sender, AbstractCashier cashier) => cashier.OrderAccepted -= OnOrderAccepted;
private void OnCashierAdded(object sender, AbstractCashier cashier) => cashier.OrderAccepted += OnOrderAccepted;