# File lib/cgikit/displaygroup.rb, line 329
    def insert( index = nil, object = nil )
      object ||= create
      index ||= @first_display_index - 1
      if sindex = @selection_indexes[0] then
        index = sindex + 1
      end
      if @data_source then
        @data_source.insert(index, object)
      else
        @objects.insert(index, object)
      end
      update
    end