gistfile1.rb

    class Widget
      include Utils

      class << self
        attr_accessor :needs_multipart_form, :is_hidden
      end

      @needs_multipart_form = false
      @is_hidden = false

      def self.inherited(c)
        super(c)
        c.is_hidden = is_hidden
        c.needs_multipart_form = needs_multipart_form
      end

      attr_reader :attrs

      def initialize(attrs=nil)
        @attrs = attrs.nil? ? {} : attrs.dup
      end
    end