text: # -*- coding: utf-8 -*-
  # Copyright (c) 2018-2020 Christiaan Frans Rademan <chris@fwiw.co.za>.
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #
  # * Redistributions of source code must retain the above copyright notice, this
  #   list of conditions and the following disclaimer.
  #
  # * Redistributions in binary form must reproduce the above copyright notice,
  #   this list of conditions and the following disclaimer in the documentation
  #   and/or other materials provided with the distribution.
  #
  # * Neither the name of the copyright holders nor the names of its
  #   contributors may be used to endorse or promote products derived from
  #   this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  # THE POSSIBILITY OF SUCH DAMAGE.
  from luxon import router
  from luxon import register
  from luxon import render_template
  from luxon.constants import APPLICATION_XML
  
  
  @register.resources()
  class MXGraph():
      def __init__(self):
          router.add('GET',
                     '/mxgraph/{module}/{graph}/{config}',
                     self.edit)
          router.add('GET',
                     '/mxgraph/{module}/{graph}/{config}/{resource_id}',
                     self.edit)
          router.add('GET',
                     '/mxgraph/{module}/{graph}/{config}/{resource_id}' +
                     '/{version}',
                     self.edit)
  
      def edit(self, req, resp,
               module, graph, config,
               resource_id=None, version=None):
          resp.content_type = APPLICATION_XML
          return render_template('%s/%s/%s' % (module, graph, config,),
                                 id=resource_id,
                                 version=version)
  