class="FocusMe">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
? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81using 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"
;
}
}
}