桥接模式(bridge结构模式）c#简单例子
在前面的玩家中每增加一个行为，就必须在每个玩家中都增加，通过桥接模式将行为提取出来了，减少变化
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using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace adapterpattern{ public partial class bridge : Form
{
public bridge()
{
InitializeComponent();
}
private void btnDisplay_Click(object sender, EventArgs e)
{
play p1 = new play1();
p1.setPlayAction(new move());
p1.run();
this.listBox1.Items.Add(p1.playstring);
play p2 = new play2();
p2.setPlayAction(new jump());
p2.run();
this.listBox1.Items.Add(p2.playstring);
}
}
//意图(Intent）将抽象部分与实现部分分离，使它们都可以独立地变化。
public abstract class play//抽象部分
{
public string playstring { get; set; }
protected playAction pa;
public void setPlayAction(playAction pa)//使用组合
{
this.pa = pa;
}
public abstract void action();//抽象部分变化
public void run()
{
pa.action();//执行实现部分
action();
}
}
public class play1 : play
{
public override void action()
{
playstring = "play1" + pa.actionstring;
}
}
public class play2 : play
{
public override void action()
{
playstring = "play2" + pa.actionstring;
}
}
public abstract class playAction//对实现部分进行抽象
{
public string actionstring;
public abstract void action();
}
public class move : playAction//实现玩家移动行为
{
public override void action()
{
actionstring = "move";
}
}
public class jump : playAction//实现玩家跳跃行为
{
public override void action()
{
actionstring = "jump";
}
}
} |