架构师第一期作业（第三周）

# Interface
class Printable
  def print
    raise "Not implemented"
  end
end
class UIComponent < Printable
  def initialize(name)
    @name = name
  end
  def print
    puts "print " + self.class.name + "(#{@name})"
  end
end
class Container < UIComponent
  def initialize(name)
    super(name)
    @children = []
  end
  def print
    super
    @children.each do |child|
      child.print
    end
  end
  def addChild child
    @children << child
  end
end
# Containers
class WinForm < Container
end
class Frame < Container
end
# Controls
class Picture < UIComponent
end
class Button < UIComponent
end
class Lable < UIComponent
end
class TextBox < UIComponent
end
class CheckBox < UIComponent
end
class PasswordBox < TextBox
end
class LinkLable < Lable
end
# set up uis
win = WinForm.new("WINDOW窗口")
win.addChild(Picture.new('LOGO图片'))
win.addChild(Button.new('登录'))
win.addChild(Button.new('注册'))
frame = Frame.new('FRAME1')
win.addChild(frame)
frame.addChild(Lable.new('用户名'))
frame.addChild(TextBox.new('文本框'))
frame.addChild(Lable.new('密码'))
frame.addChild(PasswordBox.new('密码框'))
frame.addChild(CheckBox.new('复选框'))
frame.addChild(TextBox.new('记住用户名'))
frame.addChild(LinkLable.new('忘记密码'))
# print
win.print