new_contents: # -*- coding: utf-8  -*-
  #
  # Copyright (C) 2012-2013 Ben Kurtovic <ben.kurtovic@verizon.net>
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  from __future__ import unicode_literals
  
  from . import Node
  from ..compat import str
  from ..utils import parse_anything
  
  __all__ = ["ExternalLink"]
  
  class ExternalLink(Node):
      """Represents an external link, like ``[http://example.com/ Example]``."""
  
      def __init__(self, url, title=None, brackets=True):
          super(ExternalLink, self).__init__()
          self._url = url
          self._title = title
          self._brackets = brackets
  
      def __unicode__(self):
          if self.brackets:
              if self.title is not None:
                  return "[" + str(self.url) + " " + str(self.title) + "]"
              return "[" + str(self.url) + "]"
          return str(self.url)
  
      def __iternodes__(self, getter):
          yield None, self
          for child in getter(self.url):
              yield self.url, child
          if self.title is not None:
              for child in getter(self.title):
                  yield self.title, child
  
      def __strip__(self, normalize, collapse):
          if self.title.strip():
              return self.title.strip_code(normalize, collapse)
          return None
  
      def __showtree__(self, write, get, mark):
          write("[")
          get(self.url)
          if self.title is not None:
              get(self.title)
          write("]")
  
      @property
      def url(self):
          """The url of the link target, as a :py:class:`~.Wikicode` object."""
          return self._url
  
      @property
      def title(self):
          """The link title (if given), as a :py:class:`~.Wikicode` object."""
          return self._title
  
      @property
      def brackets(self):
          """Whether to enclose the URL in brackets or display it straight."""
          return self._brackets
  
      @url.setter
      def url(self, value):
          self._url = parse_anything(value)
  
      @title.setter
      def title(self, value):
          if value is None:
              self._title = None
          else:
              self._title = parse_anything(value)
  
      @brackets.setter
      def brackets(self, value):
          self._brackets = bool(value)
  
subject: Add ExternalLink Node type.