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82 lines
1.3 KiB
Go
82 lines
1.3 KiB
Go
/**
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* @Author:zhoutao
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* @Date:2020/12/12 上午10:58
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* @Desc:
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*/
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package command
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import "fmt"
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//命令模式:本质是把某个对象的"方法调用"-》封装到对象中，方便传输、存储、调用
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//使用命令模式还可以用作： 批处理、任务队列、undo,redo等，
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type Command interface {
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Execute()
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}
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//MotherBoard
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type MotherBoard struct {
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}
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func (*MotherBoard) Start() {
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fmt.Print("system starting\n")
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}
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func (*MotherBoard) Reboot() {
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fmt.Print("system rebooting\n")
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}
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//NewStart
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func NewStartCommand(mb *MotherBoard) *StartCommand {
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return &StartCommand{
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mb: mb,
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}
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}
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// 将启动操作封装到了StartCommand对象中
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type StartCommand struct {
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mb *MotherBoard
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}
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func (s *StartCommand) Execute() {
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s.mb.Start()
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}
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//NewReboot
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func NewRebootCommand(mb *MotherBoard) *RebootCommond {
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return &RebootCommond{
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mb: mb,
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}
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}
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// 将reboot操作封装到了额RebootCommond对象中
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type RebootCommond struct {
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mb *MotherBoard
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}
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func (r *RebootCommond) Execute() {
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r.mb.Reboot()
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}
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//NewBox
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func NewBox(button1, button2 Command) *Box {
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return &Box{
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button1: button1,
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button2: button2,
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}
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}
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type Box struct {
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button1 Command
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button2 Command
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}
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func (b *Box) PressButton1() {
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b.button1.Execute()
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}
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func (b *Box) PressButton2() {
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b.button2.Execute()
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}
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