static void Main(string[] args)
{
var invoker = new Invoker();
var calculator = new Calculator();
var command1 = new CalculatorCommand(calculator, CalculatorCommand.Operation.Add, 10);
var command2 = new CalculatorCommand(calculator, CalculatorCommand.Operation.Multiply, 5);
var command3 = new CalculatorCommand(calculator, CalculatorCommand.Operation.Subtract, 5);
var command4 = new CalculatorCommand(calculator, CalculatorCommand.Operation.Divide, 5);
invoker.Command = command1;
invoker.Invoke();
invoker.Command = command2;
invoker.Invoke();
invoker.Command = command3;
invoker.Invoke();
invoker.Undo();
invoker.Command = command4;
invoker.Invoke();
Console.WriteLine($"Result is : {calculator.Value}");
}
static void Main(string[] args)
{
Calculadora calculadora = new Calculadora();
Invoker invoker = new Invoker();
invoker.Compute(new Soma(calculadora, 10));
invoker.Compute(new Soma(calculadora, 5));
invoker.Compute(new Soma(calculadora, 10));
//Desfazer as duas �ltimas opera��es
invoker.Undo(2);
Console.ReadKey();
}
/// <summary>
/// Метод меняет состояние самолёта
/// </summary>
/// <param name="plane">Самолёт</param>
/// <param name="receiver">Исполнитель команд</param>
/// <returns></returns>
private static int PlaneControl(Airplane plane, Invoker receiver)
{
Console.WriteLine("Что делать самолёту? ");
int a = 1;
try
{
a = Convert.ToInt32(Console.ReadLine());
if (a != 1 && a != 2 && a != 3 && a != 4)
{
throw new Exception("Неверная команда");
}
}
catch (FormatException)
{
Console.WriteLine("Введите команду правильно");
return(0);
}
catch (Exception)
{
Console.WriteLine("Такой команды нет");
return(0);
}
switch (a)
{
case 1:
{
receiver.Command = new TakeOff(plane);
receiver.Run();
}
; break;
case 2:
{
receiver.Command = new Landing(plane);
receiver.Run();
}
; break;
case 3:
receiver.Undo();
; break;
}
Console.WriteLine(plane.State);
return(a);
}