第三周作业

package homework

type component interface {
	print()
}


package homework
type button struct {
	name string
}
func NewButton(name string) *button {
	return &button{
		name: name,
	}
}
func (b *button) print() {
	println("print Button(" + b.name + ")")
}

package homework
type checkBox struct {
	name string
}
func NewCheckBox(name string) *checkBox {
	return &checkBox{
		name: name,
	}
}
func (c *checkBox) print() {
	println("print CheckBox(" + c.name + ")")
}

package homework
type frame struct {
	name     string
	elements []component
}
func NewFrame(name string) *frame {
	return &frame{
		name: name,
	}
}
func (f *frame) print() {
	println("print Frame(" + f.name + ")")
	for _, e := range f.elements {
		e.print()
	}
}
func (f *frame) AddElement(e component) {
	f.elements = append(f.elements, e)
}

package homework
type lable struct {
	name string
}
type linkLable struct {
	*lable
	href string
}
func NewLable(name string) *lable {
	return &lable{
		name: name,
	}
}
func (l *lable) print() {
	println("print Lable(" + l.name + ")")
}
func NewLinkLable(name, href string) *linkLable {
	return &linkLable{
		NewLable(name),
		href,
	}
}
func (l *linkLable) print() {
	println("print LinkLable(" + l.name + ")")
}

package homework
type picture struct {
	name string
}
func NewPicture(name string) *picture {
	return &picture{
		name: name,
	}
}
func (b *picture) print() {
	println("print Picture(" + b.name + ")")
}

package homework
type textBox struct {
	name string
}
type passwordBox struct {
	*textBox
	isPassword bool
}
func NewTextBox(name string) *textBox {
	return &textBox{
		name: name,
	}
}
func (t *textBox) print() {
	println("print TextBox(" + t.name + ")")
}
func NewPasswordBox(name string) *passwordBox {
	return &passwordBox{
		NewTextBox(name),
		true,
	}
}
func (t *passwordBox) print() {
	println("print PasswordBox(" + t.name + ")")
}

package homework
type winForm struct {
	name     string
	elements []component
}
func NewWinForm(name string) *winForm {
	return &winForm{
		name: name,
	}
}
func (w *winForm) Print() {
	println("print WinForm(" + w.name + ")")
	for _, e := range w.elements {
		e.print()
	}
}
func (w *winForm) AddElement(e component) {
	w.elements = append(w.elements, e)
}

package homework
import "testing"
func TestHomework(t *testing.T) {
	w := NewWinForm("WINDOW窗口")
	w.AddElement(NewPicture("LOGO图片"))
	w.AddElement(NewButton("登陆"))
	w.AddElement(NewButton("注册"))
	frame1 := NewFrame("FRAME1")
	w.AddElement(frame1)
	frame1.AddElement(NewLable("用户名"))
	frame1.AddElement(NewTextBox("文本框"))
	frame1.AddElement(NewLable("密码"))
	frame1.AddElement(NewPasswordBox("密码框"))
	frame1.AddElement(NewCheckBox("复选框"))
	frame1.AddElement(NewLable("记住用户名"))
	frame1.AddElement(NewLinkLable("忘记密码", "link"))
	w.Print()
}