public object Next()
{
if (HasNext())
{
IIterator iterator = (IIterator)_stack.Peek();
MenuComponent component = (MenuComponent)iterator.Next();
if (component is Menu && !(iterator is CompositeIterator))
{
_stack.Push(component.CreateIterator());
}
return(component);
}
else
{
return(null);
}
}
public void PrintVegetarianMenu()
{
IIterator iterator = _allMenus.CreateIterator();
Console.WriteLine("\nVEGETARIAN MENU\n----");
while (iterator.HasNext())
{
MenuComponent menuComponent = (MenuComponent)iterator.Next();
try
{
if (menuComponent.IsVegetarian())
{
menuComponent.Print();
}
}
catch (NotSupportedException)
{
}
}
}