C#面向对象设计模式纵横谈——17 Mediator中介者模式

主讲：李建忠

来源：http://www.microsoft.com/china/msdn/events/webcasts/shared/webcast/consyscourse/CsharpOOD.aspx

 

 

   1:   

   2:  abstract class Mediator

   3:  {

   4:      public abstract void Notify();

   5:      public abstract void AddElement(Element element)

   6:      {

   7:          list.Add(element);

   8:      }

   9:   

  10:      ArrayList<Element> list=new ArrayList<Element>();

  11:  }

  12:   

  13:  abstract class Element

  14:  {

  15:      Mediator mediator;

  16:   

  17:      public Element(Mediator mediator)

  18:      {

  19:          this.mediator=mediator;

  20:      }

  21:   

  22:      public virtual void OnChange()

  23:      {

  24:          mediator.Notify();

  25:      }

  26:  }

  27:   

  28:  class CutMenuItem:Element

  29:  {

  30:      public CutMenuItem(Mediator mediator)

  31:          :base(mediator)

  32:      {

  33:          //...

  34:      }

  35:   

  36:      public void Click()

  37:      {

  38:          OnChange();

  39:      }

  40:  }

  41:   

  42:  class TextArea:Element

  43:  {

  44:      public TextArea(Mediator mediator)

  45:          :base(mediator)

  46:      {

  47:          //...

  48:      }

  49:   

  50:      public void Process()

  51:      {

  52:          OnChange();

  53:      }

  54:  }

  55:   

  56:  class ToolBarButton:Element

  57:  {

  58:      public ToolBarButton(Mediator mediator)

  59:          :base(mediator)

  60:      {

  61:          //...

  62:      }

  63:   

  64:      public void Click()

  65:      {

  66:          OnChange();

  67:      }

  68:  }

  69:   

  70:  class ConcreteMediator:Mediator

  71:  {

  72:      public override void Notify()

  73:      {

  74:   

  75:      }

  76:   

  77:      

  78:  }