组合设计模式 - 打印窗口组件的树状结构

package main
import "fmt"
type Component interface {
	Print()
}
type WinForm struct {
	Type     string
	Name     string
	Children []Component
}
func NewWinForm(name string) *WinForm {
	return &WinForm{
		Type:     "WinForm",
		Name:     name,
		Children: []Component{},
	}
}
func (w *WinForm) Print() {
	fmt.Printf("print %s(%s) \n", w.Name, w.Type)
	for _, c := range w.Children {
		c.Print()
	}
}
func (w *WinForm) AddChild(component Component) {
	w.Children = append(w.Children, component)
}
type Picture struct {
	Name string
	Tpye string
}
func NewPicture(name string) *Picture {
	return &Picture{
		Name: name,
		Tpye: "Picture",
	}
}
func (p *Picture) Print() {
	fmt.Printf("print %s(%s)\n", p.Tpye, p.Name)
}
type Button struct {
	Name string
	Type string
}
func NewButton(name string) *Button {
	return &Button{
		Name: name,
		Type: "Button",
	}
}
func (b *Button) Print() {
	fmt.Printf("print %s(%s)\n", b.Type, b.Name)
}
type Frame struct {
	Name     string
	Type     string
	Children []Component
}
func NewFrame(name string) *Frame {
	return &Frame{
		Name:     name,
		Type:     "Frame",
		Children: []Component{},
	}
}
func (f *Frame) Print() {
	fmt.Printf("print %s(%s)\n", f.Type, f.Name)
	for _, c := range f.Children{
		c.Print()
	}
}
func (f *Frame) AddChild(component Component) {
	f.Children = append(f.Children, component)
}
type Label struct {
	Name string
	Type string
}
func NewLabel(name string) *Label {
	return &Label{
		Name: name,
		Type: "Label",
	}
}
func (l *Label) Print() {
	fmt.Printf("print %s(%s)\n", l.Type, l.Name)
}
type TextBox struct {
	Name string
	Type string
}
func NewTextBox(name string) *TextBox {
	return &TextBox{
		Name: name,
		Type: "TextBox",
	}
}
func (t *TextBox) Print() {
	fmt.Printf("print %s(%s)\n", t.Type, t.Name)
}
type PasswordBox struct {
	Name string
	Type string
}
func NewPasswordBox(name string) *PasswordBox {
	return &PasswordBox{
		Name: name,
		Type: "PasswordBox",
	}
}
func (p *PasswordBox) Print() {
	fmt.Printf("print %s(%s)\n", p.Type, p.Name)
}
type CheckBox struct {
	Name string
	Type string
}
func NewCheckBox(name string) *CheckBox {
	return &CheckBox{
		Name: name,
		Type: "CheckBox",
	}
}
func (c *CheckBox) Print() {
	fmt.Printf("print %s(%s)\n", c.Type, c.Name)
}
type LinkLabel struct {
	Name string
	Type string
}
func NewLinkLabel(name string) *LinkLabel {
	return &LinkLabel{
		Name: name,
		Type: "LinkLabel",
	}
}
func (l *LinkLabel) Print() {
	fmt.Printf("print %s(%s)\n", l.Type, l.Name)
}
func main() {
	win := NewWinForm("WINDOWS窗口")
	pic := NewPicture("LOGO图片")
	win.AddChild(pic)
	login := NewButton("登录")
	win.AddChild(login)
	register := NewButton("注册")
	win.AddChild(register)
	frame1 := NewFrame("FRAME1")
	win.AddChild(frame1)
	userLabel := NewLabel("用户名")
	frame1.AddChild(userLabel)
	userTextBox := NewTextBox("文本框")
	frame1.AddChild(userTextBox)
	password := NewLabel("密码")
	frame1.AddChild(password)
	passwordBox := NewPasswordBox("密码框")
	frame1.AddChild(passwordBox)
	checkBox := NewCheckBox("复选框")
	frame1.AddChild(checkBox)
	textBox := NewTextBox("记住用户名")
	frame1.AddChild(textBox)
	linkLabel := NewLinkLabel("忘记密码")
	frame1.AddChild(linkLabel)
	win.Print()
}