module MasterView
  module Directives

    # creates form_tag block and ending form tag from values in form
    #
    class Form < MasterView::DirectiveBase

      metadata :priority => :default,
        :category => 'form',
        :description => 'Replaces the start and end tags of the element using the Rails form_tag helper and an ending form tag',
        :element_usage => 'form'

      attr_arg :url_for_options
      attr_arg :options, :append_element_attrs => [:common_html, :method] do |value, args, dir|
        value = dir.merge_hash_into_str({:multipart => true}, value) if dir.element_attrs[:enctype] =~ /multipart\/form-data/i #add multipart => true ?
        value
      end
      attr_arg :parameters_for_url, :varargs => true

      event :stag do
        merge_hash_into_str( {:multipart => true}, @options ) if element_attrs.get_lowercase_str_value('enctype') == 'multipart/form-data'
        render erb_content( 'form_tag', :url_for_options, :options, :parameters_for_url )
      end

      event :etag do
        render '</form>'
      end

    end

  end
end



=begin

module MasterView
  module Directives

    # once rails 1.2 is released we can use the form_tag block method of the helper but this does not work prior to rails 1.2
    # creates form_tag block from values in form
    #
    class Form < MasterView::DirectiveBase

      metadata :priority => :default,
        :category => 'form',
        :description => 'Replaces the start and end tags of the element using the Rails form_tag block helper',
        :element_usage => 'form'

      attr_arg :url_for_options
      attr_arg :options, :append_element_attrs => [:common_html, :method]
      attr_arg :parameters_for_url, :varargs => true

      event :stag do
        merge_hash_into_str( {:multipart => true}, @options ) if element_attrs.get_lowercase_str_value('enctype') == 'multipart/form-data'
        render erb_eval( prepare_output('form_tag', :url_for_options, :options, :parameters_for_url)+' do' ) # call prepare_output directly so do won't be embedded in method call
      end

      event :etag do
        render erb_eval( 'end' )
      end

    end
  end
end

=end