Sets the editor file.

        :param File: File to set.
        :type File: unicode
        :param is_modified: File modified state.
        :type is_modified: bool
        :param is_untitled: File untitled state.
        :type is_untitled: bool
        :return: Method success.
        :rtype: bool

def set_file(self, file=None, is_modified=False, is_untitled=False):
        """
        Sets the editor file.

        :param File: File to set.
        :type File: unicode
        :param is_modified: File modified state.
        :type is_modified: bool
        :param is_untitled: File untitled state.
        :type is_untitled: bool
        :return: Method success.
        :rtype: bool
        """

        LOGGER.debug("> Setting '{0}' editor file.".format(file))
        self.__file = file
        self.__is_untitled = is_untitled
        self.set_modified(is_modified)
        self.set_title()
        return True