Module: RSS::BaseTrackBackModel

# File 'lib/rss/trackback.rb', line 30

def append_features(klass)
  super

  unless klass.class == Module
    klass.module_eval {include TrackBackUtils}

    klass.install_must_call_validator(TRACKBACK_PREFIX, TRACKBACK_URI)
    %w(ping).each do |name|
      var_name = "#{TRACKBACK_PREFIX}_#{name}"
      klass_name = "TrackBack#{Utils.to_class_name(name)}"
      klass.install_have_child_element(name, TRACKBACK_URI, "?", var_name)
      klass.module_eval(<<-EOC, __FILE__, __LINE__)
        remove_method :#{var_name}
        def #{var_name}
          @#{var_name} and @#{var_name}.value
        end

        remove_method :#{var_name}=
        def #{var_name}=(value)
          @#{var_name} = Utils.new_with_value_if_need(#{klass_name}, value)
        end
      EOC
    end

    [%w(about s)].each do |name, postfix|
      var_name = "#{TRACKBACK_PREFIX}_#{name}"
      klass_name = "TrackBack#{Utils.to_class_name(name)}"
      klass.install_have_children_element(name, TRACKBACK_URI, "*",
                                          var_name)
      klass.module_eval(<<-EOC, __FILE__, __LINE__)
        remove_method :#{var_name}
        def #{var_name}(*args)
          if args.empty?
            @#{var_name}.first and @#{var_name}.first.value
          else
            ret = @#{var_name}.__send__("[]", *args)
            if ret.is_a?(Array)
              ret.collect {|x| x.value}
            else
              ret.value
            end
          end
        end

        remove_method :#{var_name}=
        remove_method :set_#{var_name}
        def #{var_name}=(*args)
          if args.size == 1
            item = Utils.new_with_value_if_need(#{klass_name}, args[0])
            @#{var_name}.push(item)
          else
            new_val = args.last
            if new_val.is_a?(Array)
              new_val = new_value.collect do |val|
                Utils.new_with_value_if_need(#{klass_name}, val)
              end
            else
              new_val = Utils.new_with_value_if_need(#{klass_name}, new_val)
            end
            @#{var_name}.__send__("[]=", *(args[0..-2] + [new_val]))
          end
        end
        alias set_#{var_name} #{var_name}=
      EOC
    end
  end
end