module MasterView
  module Directives

    # Inserts a comment into the file that indicates that this file was generated
    # and should not be edited, else changes could be lost. It includes the path to
    # the original file that should be edited instead
    class Insert_generated_comment < MasterView::DirectiveBase
      Generated_comment_text = <<-END
#    WARNING - This file was generated by MasterView plugin. 
#    Do not edit this file otherwise you may lose your changes
#    when this file is re-generated.
# 
#    To make changes edit the MasterView file which is located at: 
  END

      def priority
        DirectivePriorities::Lowest
      end

      def stag(directive_call_stack)
        comment = "\n<% \n" + Generated_comment_text  + "#    "+ attr_value + "\n%>"

        ret = []
        ret << directive_call_stack.render
        ret << comment
      end

    end
  end
end