架构师训练营第二期 Week 3 作业

module Renderable  def render    raise NotImplementedError  endend
class SimpleComponent  include Renderable
  attr_accessor :name
  def initialize(name)    self.name = name  end
  def render    puts "print #{type}(#{name})"  end
  private
  def type    raise NotImplementedError  endend
class CompositeComponent < SimpleComponent  attr_accessor :components
  def initialize(name, components = [])    super(name)    self.components = components  end
  def render    super    components.each(&:render)  endend
class Picture < SimpleComponent  def type    'Picture'  endend
class Button < SimpleComponent  def type    'Button'  endend
class Label < SimpleComponent  def type    'Label'  endend
class TextBox < SimpleComponent  def type    'TextBox'  endend
class PasswordBox < SimpleComponent  def type    'PasswordBox'  endend
class CheckBox < SimpleComponent  def type    'CheckBox'  endend
class LinkLabel < SimpleComponent  def type    'LinkLabel'  endend
class Frame < CompositeComponent  def type    'Frame'  endend
class WinForm < CompositeComponent  def type    'WinForm'  endend
WinForm.new(  'WINDOW窗口',  [    Picture.new('LOGO图片'),    Button.new('登录'),    Button.new('注册'),    Frame.new('FRAME1', [      Label.new('用户名'),      TextBox.new('文本框'),      Label.new('密码'),      PasswordBox.new('密码框'),      CheckBox.new('复选框'),      TextBox.new('记住用户名'),      LinkLabel.new('忘记密码')    ])  ]).render

➜  ruby composite_pattern.rbprint WinForm(WINDOW窗口)print Picture(LOGO图片)print Button(登录)print Button(注册)print Frame(FRAME1)print Label(用户名)print TextBox(文本框)print Label(密码)print PasswordBox(密码框)print CheckBox(复选框)print TextBox(记住用户名)print LinkLabel(忘记密码)