[聚合文章] C#设计模式之十八中介者模式（Mediator Pattern）【行为型】

  1 namespace 中介者模式的实现
  2 {
  3     //抽象中介者角色
  4     public interface Mediator
  5     {
  6        void Command(Department department);
  7     }
  8     
  9     //总经理--相当于具体中介者角色
 10     public sealed class President:Mediator
 11     {
 12        //总经理有各个部门的管理权限
 13        private Financial financial;
 14        private Market market;
 15        private Development development;
 16 
 17        public void SetFinancial(financial)
 18        {
 19          this.financial=financial;
 20        }
 21        public void SetDevelopment(development)
 22        {
 23           this.development=development;
 24        }
 25        public SetMarket(market)
 26        {
 27          this.market=market;
 28        }
 29 
 30        public void Command(Department department)
 31        {
 32           if (department.GetType()==typeof(Market))
 33           {
 34              financial.Process();
 35            }
 36         }
 37      }
 38 
 39     //同事类的接口
 40     public abstract class Department
 41     {
 42        //持有中介者(总经理)的引用
 43        private Mediator mediator;
 44 
 45        protected Department(Mediator mediator)
 46        {
 47           this.mediator = mediator;
 48        }
 49 
 50        public Mediator GetMediator
 51        {
 52           get{ return mediator;}
 53           private set{this.mediator=value;}
 54        }
 55 
 56        //做本部门的事情
 57        public abstract void Process();
 58 
 59        //向总经理发出申请
 60        public abstract void Apply();
 61     }
 62 
 63     //开发部门
 64     public sealed class Development:Department
 65     {
 66         public Development(Mediator m):base(m){}
 67 
 68         public override void Process()
 69         {
 70            System.Console.WriteLine("我们是开发部门，要进行项目开发，没钱了，需要资金支持！");
 71         }
 72 
 73         public override void Apply()
 74         {
 75             System.Console.WriteLine("专心科研，开发项目！");
 76         }
 77       }
 78 
 79     //财务部门
 80     public sealed class Financial:Department
 81     {
 82        public Financial(Mediator m):base(m){}
 83 
 84        public override void Process()
 85        {
 86            System.Console.WriteLine("汇报工作！没钱了，钱太多了！怎么花?");
 87         }
 88 
 89        public override void Apply()
 90        {
 91            System.Console.WriteLine("数钱！");
 92        }
 93      }
 94 
 95     //市场部门
 96     public sealed class Market:Department
 97     {
 98          public Market(Mediator mediator):base(mediator){}
 99 
100          public override void Process()
101          {
102             System.Console.WriteLine("汇报工作！项目承接的进度，需要资金支持！");
103             GetMediator().Command(this);
104          }
105 
106          public override void Apply()
107          {
108              System.Console.WriteLine("跑去接项目！");
109           }
110       }
111 
112 
113        public class Client
114        {
115            public static void main(String[] args)
116            {
117                President mediator = new President();
118                Market   market = new Market(mediator);
119                Development development = new Development(mediator);
120                Financial financial = new Financial(mediator);
121 
122                mediator.SetFinancial(financial);
123                mediator.SetDevelopment(development);
124                mediator.SetMarket(market);
125 
126                market.Process();
127                market.Apply();
128 
129                Console.WriteLine();
130            }
131        }
132   }