//Method that processes the request or passes it to the next handler
public virtual bool DispenseRequest(int amount, ATM currATM, ref int sum_dispense)
{
if (amount >= Denomination)
{
var num = GetQuantity();
var remainder = amount;
while (remainder >= Denomination && num > 0 &&
currATM.GetCurrNotesAmount() + 1 <= currATM.GetMaxNotesAmount())
{
remainder -= Denomination;
num--;
}
//added
sum_dispense += Denomination * (GetQuantity() - num);
Quantity -= num;
//added
if (remainder != 0)
{
return(next.DispenseRequest(remainder, currATM, ref sum_dispense));
}
return(true);
}
else
{
return(next.DispenseRequest(amount, currATM, ref sum_dispense));
}
}
public void doWithdraw(int amount, CurrencyBill firstHandler, ref int sum_dispense)
{
while (true)
{
//sender pass the request to first handler in the pipeline
var isDepensible = firstHandler.DispenseRequest(amount, this, ref sum_dispense);
if (!isDepensible)
{
MessageBox.Show($"Failed to dispense ${amount}!");
}
}
}
