组合模式

最新推荐文章于 2025-02-23 22:21:20 发布

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最新推荐文章于 2025-02-23 22:21:20 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/mikechang/archive/2010/04/10/1708870.html

代码

using System;
using System.Collections;
using System.Collections.Generic;

public abstract class Graphics
{
     public abstract void Draw();
}

public class Picture:Graphics
{
     protected ArrayList list = new ArrayList();
     public override void Draw()
    {
         foreach (Graphics g in list)
        {
            g.Draw();
        }
    }

     public void Add(Graphics g)
    {
        list.Add(g);
    }

     public void Remove(Graphics g)
    {
        list.Remove(g);
    }
}
public class Line:Graphics
{
     public override void Draw()
    {
        Console.WriteLine( " Line Draw(); " );
    }
}

public class Circle:Graphics
{
     public override void Draw()
    {
        Console.WriteLine( " Circle Draw(); " );
    }
}

public class Rectangle:Graphics
{
     public override void Draw()
    {
        Console.WriteLine( " Rectangle Draw(); " );
    }
}

public class MyClass
{
     public static void Main()
    {
        Picture myPicture = new Picture();
        myPicture.Add( new Line());
        myPicture.Add( new Circle());

        Rectangle myRec = new Rectangle();
        myPicture.Add(myRec);

        myPicture.Draw();
        Console.ReadLine();
    }
}

using System;
using System.Collections;
using System.Collections.Generic;

public abstract class Component
{
   protected string name;
   public Component(string name)
   {
       this.name=name;
   }
   public abstract void Display(int depth);
}
public class Composite:Component
{
   private ArrayList children=new ArrayList();

   public Composite(string name):base(name)
   {}

   public void Add(Component component)
   {
       children.Add(component);
   }
   public void Remove(Component component)
   {
       children.Remove(component);
   }

   public override void Display(int depth)
   {
       Console.WriteLine(new String('-',depth)+this.name);
   }
}

public class Leaf:Component
{
   public Leaf(string name):base(name)
   {

   }
   public override void Display(int depth)
   {
       Console.WriteLine(new String('-',depth)+this.name);
   }
}

public class MyClass
{
   public static void Main()
   {
       Composite root=new Composite("root");
       root.Add(new Leaf("Leaf A"));
       root.Add(new Leaf("Leaf B"));

       Composite comp=new Composite("Composite X");
       comp.Add(new Leaf("Leaf XA"));
       comp.Add(new Leaf("Leaf XB"));
       root.Add(comp);
       root.Add(new Leaf("Leaf C"));
       root.Add(new Leaf("Leaf D"));

       Leaf l=new Leaf("Leaf E");
       root.Add(l);
       root.Remove(l);

       root.Display(2);

       Console.ReadLine();


   }
}