/// <summary>
/// Function to calculate items cost
/// </summary>
/// <param name="itemElements">items to calculate costs of</param>
/// <returns>returns total cost</returns>
private int CalculateCost(ItemElement[] itemElements)
{
IShopingCartVisitor visitor = new ShoppingCartImplement();
int total = 0;
foreach (ItemElement item in itemElements)
{
total += item.Accept(visitor);
}
return(total);
}
/// <summary>
/// DisplayFunction as a function
/// </summary>
public static void DisplayFunction()
{
try
{
Console.WriteLine("1: Observer Patteen");
Console.WriteLine("2: Visitor Patteen");
Console.WriteLine("3: Mediator Patteen");
string input = Console.ReadLine();
if (Regex.IsMatch(input, @"^[0-9]+$"))
{
int num = Convert.ToInt32(input);
switch (num)
{
case 1:
ObserverPattern.ObserverTest observerTest = new ObserverPattern.ObserverTest();
observerTest.ObserverFunction();
break;
case 2:
VisitorPattern.ShoppingCartImplement shoppingCart = new VisitorPattern.ShoppingCartImplement();
shoppingCart.ShoppingCartDisplay();
break;
case 3:
MediatorPattern.MediatorPattern mediatorPattern = new MediatorPattern.MediatorPattern();
mediatorPattern.MediatorFunction();
break;
default:
Console.WriteLine("Invalid input");
Console.WriteLine();
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
