第三周作业
发布于: 2020 年 10 月 04 日
请在草稿纸上手写一个单例模式的实现代码，拍照提交作业。
请用组合设计模式编写程序，打印输出图 1 的窗口，窗口组件的树结构如图 2 所示，打印输出示例参考图 3。
component.go
package homework
type component interface { print()}
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button.go
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 + ")")}
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checkBox.go
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 + ")")}
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frame.go
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)}
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lable.go
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 + ")")}
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picture.go
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 + ")")}
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textBox.go
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 + ")")}
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winForm.go
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)}
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homework_test.go
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()}
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发布于: 2020 年 10 月 04 日阅读数: 39
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