命令模式

  1 class Program
  2     {
  3         static void Main(string[] args)
  4         {
  5             //开店前的准备
  6             Barbecuer boy = new Barbecuer();
  7             Command bakeMuttonCommand1 = new BakeMuttonCommand(boy);
  8             Command bakeMuttonCommand2 = new BakeMuttonCommand(boy);
  9             Command bakeChickenWingCommand1 = new BakeChickenWingCommand(boy);
 10             Waiter girl = new Waiter();
 11 
 12             //开门营业 顾客点菜
 13             girl.SetOrder(bakeMuttonCommand1);
 14             girl.SetOrder(bakeMuttonCommand2);
 15             girl.SetOrder(bakeChickenWingCommand1);
 16 
 17             //点菜完闭，通知厨房
 18             girl.Notify();
 19 
 20             Console.Read();
 21 
 22         }
 23     }
 24 
 25     //服务员
 26     public class Waiter
 27     {
 28         private IList<Command> orders = new List<Command>();
 29 
 30         //设置订单
 31         public void SetOrder(Command command)
 32         {
 33             if (command.ToString() == "命令模式.BakeChickenWingCommand")
 34             {
 35                 Console.WriteLine("服务员：鸡翅没有了，请点别的烧烤。");
 36             }
 37             else
 38             {
 39                 orders.Add(command);
 40                 Console.WriteLine("增加订单：" + command.ToString() + "  时间：" + DateTime.Now.ToString());
 41             }
 42         }
 43 
 44         //取消订单
 45         public void CancelOrder(Command command)
 46         {
 47             orders.Remove(command);
 48             Console.WriteLine("取消订单：" + command.ToString() + "  时间：" + DateTime.Now.ToString());
 49         }
 50 
 51         //通知全部执行
 52         public void Notify()
 53         {
 54             foreach (Command cmd in orders)
 55             {
 56                 cmd.ExcuteCommand();
 57             }
 58         }
 59     }
 60 
 61     //抽象命令
 62     public abstract class Command
 63     {
 64         protected Barbecuer receiver;
 65 
 66         public Command(Barbecuer receiver)
 67         {
 68             this.receiver = receiver;
 69         }
 70 
 71         //执行命令
 72         abstract public void ExcuteCommand();
 73     }
 74 
 75     //烤羊肉串命令
 76     class BakeMuttonCommand : Command
 77     {
 78         public BakeMuttonCommand(Barbecuer receiver)
 79             : base(receiver)
 80         { }
 81 
 82         public override void ExcuteCommand()
 83         {
 84             receiver.BakeMutton();
 85         }
 86     }
 87 
 88     //烤鸡翅命令
 89     class BakeChickenWingCommand : Command
 90     {
 91         public BakeChickenWingCommand(Barbecuer receiver)
 92             : base(receiver)
 93         { }
 94 
 95         public override void ExcuteCommand()
 96         {
 97             receiver.BakeChickenWing();
 98         }
 99     }
100 
101     //烤肉串者
102     public class Barbecuer
103     {
104         public void BakeMutton()
105         {
106             Console.WriteLine("烤羊肉串!");
107         }
108 
109         public void BakeChickenWing()
110         {
111             Console.WriteLine("烤鸡翅!");
112         }
113     }