openxml/openxml-docx

require "openxml/docx/properties/column"

module OpenXml
  module Docx
    module Properties
      class Columns < ContainerProperty
        tag :cols
        child_class :column

        with_namespace :w do
          attribute :equal_width, expects: :boolean
          attribute :number, expects: :integer, displays_as: :num
          attribute :separator, expects: :boolean, displays_as: :sep
          attribute :space, expects: :integer
        end

        def render?
          return true if %i(equal_width number separator space).any? { |attribute| !public_send(attribute).nil? }
          super
        end

      end
    end
  end
end