Mediator 用一个中介者对象来封装一系列的对象交互。中介者使各个对象不需要显式的相互作用，从而使其耦合松散，而且可以独立地改变它们之间的交互。...

Machine类（可以包含容器）  1using System; 2 3namespace Gof.Test.Mediator 4{ 5    public class Machine 6    { 7        public Machine(string id) 8        { 9            _id = id;10        }11        private TubMediator _mediator = TubMediator.Singleton();12        private string _id;1314        public void AddTub(Tub t)15        {16            _mediator.Set(t,this);17        }18        public System.Collections.IList GetTubs()19        {20            return _mediator.GetTubs(this);21        }22        public override string ToString()23        {24            return _id;25        }26        public override int GetHashCode()27        {28            return _id.GetHashCode();29        }30        public override bool Equals(object obj)31        {32            if(obj == this)33            {34                return true;35            }36            if(!(obj is Machine))37            {38                return false;39            }40            Machine m = (Machine)obj;41            return _id.Equals(m._id);42        }4344    }45} Tub容器（可以添加到Machine,一个容器只能添加到一个Machine)  1using System; 2 3namespace Gof.Test.Mediator 4{ 5    public class Tub 6    { 7        public Tub() 8        {} 9        private string _id;10        private TubMediator _mediator = TubMediator.Singleton();11        public Tub(string id)12        {13            _id = id;14        }15        public Machine Location16        {17            get18            {19                return _mediator.GetMachine(this);20            }21            set22            {23                _mediator.Set(this,value);24            }25        }26        public override string ToString()27        {28            return _id;29        }30        public override int GetHashCode()31        {32            return _id.GetHashCode();33        }34        public override bool Equals(object obj)35        {36            if(obj== this)37            {38                return true;39            }40            if(!( obj is Tub))41            {42                return false;43            }44            Tub t = (Tub)obj;45            return _id.Equals(t._id);46        }4748    }49} 中介者  1using System; 2 3namespace Gof.Test.Mediator 4{ 5    public class TubMediator 6    { 7        private System.Collections.Hashtable _tubMachine = new System.Collections.Hashtable(); 8        private static TubMediator _mediator; 9        private TubMediator()10        {}11        public static TubMediator Singleton()12        {13            if(_mediator == null)14            {15                _mediator = new TubMediator();16            }17            return _mediator;18        }19        public Machine GetMachine(Tub t)20        {21             return (Machine)_tubMachine[t];22        }23        public System.Collections.IList GetTubs(Machine m)24        {25            System.Collections.ArrayList al = new System.Collections.ArrayList();26            System.Collections.IDictionaryEnumerator e = _tubMachine.GetEnumerator();27            while(e.MoveNext())28            {29                if(e.Value.Equals(m))30                {31                    al.Add(e.Key);32                }33            }34            return al;35        }36        public void Set(Tub t,Machine m)37        {38            _tubMachine[t] = m;39        }40    }41} 客户代码  1using System; 2 3namespace Gof.Test.Mediator 4{ 5    public class TubMediator 6    { 7        private System.Collections.Hashtable _tubMachine = new System.Collections.Hashtable(); 8        private static TubMediator _mediator; 9        private TubMediator()10        {}11        public static TubMediator Singleton()12        {13            if(_mediator == null)14            {15                _mediator = new TubMediator();16            }17            return _mediator;18        }19        public Machine GetMachine(Tub t)20        {21             return (Machine)_tubMachine[t];22        }23        public System.Collections.IList GetTubs(Machine m)24        {25            System.Collections.ArrayList al = new System.Collections.ArrayList();26            System.Collections.IDictionaryEnumerator e = _tubMachine.GetEnumerator();27            while(e.MoveNext())28            {29                if(e.Value.Equals(m))30                {31                    al.Add(e.Key);32                }33            }34            return al;35        }36        public void Set(Tub t,Machine m)37        {38            _tubMachine[t] = m;39        }40    }41}

转载于:https://www.cnblogs.com/nanshouyong326/archive/2007/01/05/612604.html