static void Main(string[] args)
{
// Клиентский код.
Originator originator = new Originator("Super-duper-super-puper-super.");
Caretaker caretaker = new Caretaker(originator);
caretaker.Backup();
originator.DoSomething();
caretaker.Backup();
originator.DoSomething();
caretaker.Backup();
originator.DoSomething();
Console.WriteLine();
caretaker.ShowHistory();
Console.WriteLine("\nClient: Now, let's rollback!\n");
caretaker.Undo();
Console.WriteLine("\n\nClient: Once more!\n");
caretaker.Undo();
Console.WriteLine();
}
static void Main(string[] args)
{
Console.WriteLine("Memento");
Console.WriteLine("Memento and Command Example");
var originator = new Originator(0);
var caretaker = new Caretaker(originator);
// 1 + 2 + 3 + 4 + 5 = 15 (state)
for (var i = 1; i <= 5; i++)
{
originator.Add(i);
}
caretaker.Backup();
// 15 - 10 = 5 (state)
originator.Subtract(10);
caretaker.Backup();
// 5 * 8 = 40 (state)
originator.MultiplyBy(8);
caretaker.Backup();
// 40 / 20 = 2 (state)
originator.DivideBy(20);
caretaker.Backup();
for (int i = 0; i <= 10; i++)
{
caretaker.RestorePreviousState();
}
}