外观模式

外观模式

电器接口

package facade

type Electrical interface {
	On()
	Off()
}

电视机

package facade

import "fmt"

type TV struct{}

func NewTV() *TV {
	return &TV{}
}

func (t *TV) On() {
	fmt.Println("打开电视！")
}

func (t *TV) Off() {
	fmt.Println("关闭电视！")
}

func (t *TV) UpSound() {
	fmt.Println("将声音调整到20")
}

电灯

package facade

import "fmt"

type Light struct{}

func NewLight() *Light {
	return &Light{}
}

func (l *Light) On() {
	fmt.Println("打开电灯！")
}

func (l *Light) Off() {
	fmt.Println("关闭电灯！")
}

func (l *Light) Auto() {
	fmt.Println("自动调节亮度")
}

外观接口

package facade

type facade interface {
	work(string)
}

智能家居系统

package facade

type system struct {
	tv    *TV
	light *Light
}

func NewFacade() facade {
	return &system{
		tv:    NewTV(),
		light: NewLight(),
	}
}

func (s *system) work(msg string) {
	switch msg {
	case "打开":
		s.tv.On()
		s.tv.UpSound()
		s.light.On()
		s.light.Auto()
	case "关闭":
		s.tv.Off()
		s.light.Off()
	default:
		fmt.Println("主人，请输入正确指令！")
	}
}  

测试文件

package facade

func TestFacade(t *testing.T) {
	fac := NewFacade()
	fac.work("打开")
	fmt.Println("**********************")
	fac.work("关闭")

}