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87 lines
1.4 KiB
Go
87 lines
1.4 KiB
Go
/**
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* @Author:zhoutao
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* @Date:2020/12/12 上午9:52
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* @Desc:
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*/
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package mediator
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import (
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"fmt"
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"strings"
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)
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//中介模式：封装对象之间的交互，使依赖变得简单，并且是复杂交互简单化
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//例子中的中介者使用单例模式生成
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type CDDriver struct {
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Data string
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}
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func (c *CDDriver) ReadData() {
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c.Data = "music,image"
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fmt.Printf("CDDriver:reading data %s\n", c.Data)
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}
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type CPU struct {
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Video string
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Sound string
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}
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func (c *CPU) Process(data string) {
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sp := strings.Split(data, ",")
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c.Sound = sp[0]
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c.Video = sp[1]
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fmt.Printf("CPU:split data with Sound %s,Video %s\n", c.Sound, c.Video)
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GetMediatorInstance().changed(c)
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}
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type VideoCard struct {
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Data string
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}
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func (v *VideoCard) Display(data string) {
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v.Data = data
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fmt.Printf("VideoCard:display %s\n", v.Data)
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GetMediatorInstance().changed(v)
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}
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type SoundCard struct {
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Data string
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}
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func (s *SoundCard) Play(data string) {
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s.Data = data
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fmt.Printf("SoundCard:play %s\n", s.Data)
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GetMediatorInstance().changed(s)
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}
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//封装Mediator对象
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type Mediator struct {
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CD *CDDriver
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CPU *CPU
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Video *VideoCard
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Sound *SoundCard
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}
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var mediator *Mediator
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func GetMediatorInstance() *Mediator {
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if mediator == nil {
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mediator = &Mediator{}
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}
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return mediator
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}
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func (m *Mediator) changed(i interface{}) {
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switch inst := i.(type) {
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case *CDDriver:
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m.CPU.Process(inst.Data)
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case *CPU:
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m.Sound.Play(inst.Sound)
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m.Video.Display(inst.Video)
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}
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}
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