def build_sitetree():
    """Строит древо сайта, исходя из достпных областей сайта.

    :return:
    """
    from sitetree.sitetreeapp import register_dynamic_trees, compose_dynamic_tree  # Потакаем поведению Django 1.7 при загрузке приложений.
    register_dynamic_trees(
        compose_dynamic_tree((
            tree('main', 'Основное дерево', (
                item('PYTHONZ', '/', alias='topmenu', url_as_pattern=False, children=(realm.get_sitetree_items() for realm in get_realms())),
                item('Вход', 'login', access_guest=True, in_menu=False, in_breadcrumbs=False),
                item('Личное меню', '#', alias='personal', url_as_pattern=False, access_loggedin=True, in_menu=False, in_sitetree=False, children=(
                    item('Профиль', 'users:details request.user.id', access_loggedin=True, in_breadcrumbs=False, in_sitetree=False),
                    item('Настройки', 'users:edit request.user.id', access_loggedin=True, in_breadcrumbs=False, in_sitetree=False),
                    item('Выход', 'logout', access_loggedin=True, in_breadcrumbs=False, in_sitetree=False),
                )),

            )),
            tree('about', 'О проекте', (
                item('Что такое Python', '/promo/', url_as_pattern=False),
                item('О проекте', '/about/', url_as_pattern=False),
                item('Карта сайта', '/sitemap/', url_as_pattern=False),
                item('Поиск по сайту', '/search/', url_as_pattern=False),
            ))
        )),
        reset_cache=True
    )

    def test_access_restricted(self):
        # Test that default is False
        i0 = item('root', 'url', access_by_perms=1)
        self.assertEqual(i0.access_restricted, True)

        # True is respected
        i1 = item('root', 'url')
        self.assertEqual(i1.access_restricted, False)

    def test_permission_any(self):
        i1 = item('root', 'url')
        self.assertEqual(i1.access_perm_type, i1.PERM_TYPE_ANY)

        i2 = item('root', 'url', perm_any=True)
        self.assertEqual(i2.access_perm_type, i1.PERM_TYPE_ANY)

        i3 = item('root', 'url', perm_any=False)
        self.assertEqual(i3.access_perm_type, i1.PERM_TYPE_ALL)

    def build_menu(self, lang):
        current_date = datetime.date.today()
        child_items = [
            item('Atbalstītāji', 'competition:supporters %i' % self.competition.id),
            item('Starta saraksts', 'competition:participant_list %i' % self.competition.id),
        ]
        self.build_flat_pages(self.competition, child_items, lang)
        if self.competition.map_set.count():
            child_items.append(item('Kartes', 'competition:maps %i' % self.competition.id))

        if self.competition.competition_date <= current_date:
            child_items.append(item('Rezultāti', '/media/results/2015_RM_bernu_rezultati.pdf', url_as_pattern=False))
        return item(str(self.competition), 'competition:competition %i' % self.competition.id, url_as_pattern=True, children=child_items, in_menu=self.competition.is_in_menu)

    def build_menu(self, lang):
        activate(lang)
        current_date = datetime.date.today()
        child_items = [
            item(_('Start List'), 'competition:participant_list %i' % self.competition.id),
            item(_("Maps"), 'competition:maps %i' % self.competition.id),
        ]
        self.build_flat_pages(self.competition, child_items, lang)

        if self.competition.competition_date <= current_date + datetime.timedelta(days=1):
            child_items.append(item(_("Results"), 'competition:result_distance_list %i' % self.competition.id))

        return item(str(self.competition), 'competition:competition %i' % self.competition.id, url_as_pattern=True, children=child_items, in_menu=self.competition.is_in_menu)

    def get_sitetree_add_item(cls):
        """Возвращает элемент древа сайта, указывающий на страницу добавления объекта.

        :return:
        """
        realm_name, realm_name_plural = cls.get_names()
        return item(cls.txt_form_add, '%s:add' % realm_name_plural, access_loggedin=True)

    def get_sitetree_edit_item(cls):
        """Возвращает элемент древа сайта, указывающий на страницу редактирования объекта.

        :return:
        """
        realm_name, _tmp = cls.get_names()
        return item(cls.txt_form_edit, '%s %s.id' % (cls.get_edit_urlname(), realm_name), in_menu=False, in_sitetree=False, access_loggedin=True)

    def get_sitetree_tags_item(cls):
        """Возвращает элемент древа сайта, указывающий на страницу разбивки объектов по метке (категории).

        :return:
        """
        return item('Категория «{{ category.title }}»', '%s category.id' % cls.get_tags_urlname(),
                    in_menu=False, in_sitetree=False)

 def build_manager_menu(self):
     return item(
         unicode(self.competition),
         "#",
         url_as_pattern=False,
         in_menu=self.competition.is_in_menu,
         access_loggedin=True,
     )

 def get_item(urlname, id_attr='id'):
     return item(
         '{{ %s.title }}' % realm_name,
         '%s %s.%s' % (urlname, realm_name, id_attr),  # Например books:details book.id
         children=children,
         in_menu=False,
         in_sitetree=False
     )

        def get_tree_item(ref_item):
            item_id = getattr(ref_item, 'id', root_id)
            tree_item = temp_ref_items.get(item_id)

            if not tree_item:
                tree_item = item(ref_item.title, ref_item.get_absolute_url(), url_as_pattern=False)
                temp_ref_items[item_id] = tree_item

            return tree_item

    def test_basic(self):
        register_dynamic_trees(
            (
                compose_dynamic_tree(
                    (
                        tree(
                            "dynamic_main_root",
                            items=(
                                item("dynamic_main_root_1", "dynamic_main_root_1_url", url_as_pattern=False),
                                item("dynamic_main_root_2", "dynamic_main_root_2_url", url_as_pattern=False),
                            ),
                        ),
                    ),
                    target_tree_alias="main",
                ),
                compose_dynamic_tree(
                    (
                        tree(
                            "dynamic_main_sub",
                            items=(
                                item("dynamic_main_sub_1", "dynamic_main_sub_1_url", url_as_pattern=False),
                                item("dynamic_main_sub_2", "dynamic_main_sub_2_url", url_as_pattern=False),
                            ),
                        ),
                    ),
                    target_tree_alias="main",
                    parent_tree_item_alias="for_dynamic",
                ),
                compose_dynamic_tree(
                    (
                        tree(
                            "dynamic",
                            items=(
                                item(
                                    "dynamic_1",
                                    "dynamic_1_url",
                                    children=(item("dynamic_1_sub_1", "dynamic_1_sub_1_url", url_as_pattern=False),),
                                    url_as_pattern=False,
                                ),
                                item("dynamic_2", "dynamic_2_url", url_as_pattern=False),
                            ),
                        ),
                    )
                ),
            )
        )

        self.sitetree._global_context = get_mock_context(path="/the_same_url/")
        tree_alias, sitetree_items = self.sitetree.get_sitetree("main")
        self.assertEqual(len(sitetree_items), 5)
        self.assertEqual(sitetree_items[3].title, "dynamic_main_root_1")
        self.assertEqual(sitetree_items[4].title, "dynamic_main_root_2")
        children = self.sitetree.get_children("main", self.t1_root)
        self.assertEqual(len(children), 2)

        tree_alias, sitetree_items = self.sitetree.get_sitetree("dynamic")
        self.assertEqual(len(sitetree_items), 3)
        children = self.sitetree.get_children("dynamic", sitetree_items[0])
        self.assertEqual(len(children), 1)

 def build_manager_menu(self):
     child_items = []
     # for child in self.competition.get_children():
     #     children = []
     #     children.append(item('Dalībnieki', '#', url_as_pattern=False, access_loggedin=True, children=[
     #         item('Pieteikt dalībnieku', 'manager:participant_create %i' % child.id, access_loggedin=True),
     #         item('Dalībnieku saraksts', 'manager:participant_list %i' % child.id, access_loggedin=True),
     #         item('{{ object }}', 'manager:participant %i object.id' % child.id, in_menu=False, access_loggedin=True),
     #     ]))
     return item(unicode(self.competition), 'manager:competition %i' % self.competition.id, children=child_items, in_menu=self.competition.is_in_menu, access_loggedin=True)

    def get_sitetree_details_item(cls):
        """Возвращает элемент древа сайта, указывающий на страницу с детальной информацией об объекте.

        :return:
        """
        realm_name, realm_name_plural = cls.get_names()
        children = []
        if 'edit' in cls.allowed_views:
            children.append(cls.get_sitetree_edit_item())
        return item('{{ %s.title }}' % realm_name, '%s %s.id' % (cls.get_details_urlname(), realm_name), children=children, in_menu=False, in_sitetree=False)

    def build_menu(self):
        current_date = datetime.date.today()
        child_items = [
            item("Atbalstītāji", "competition:supporters %i" % self.competition.id),
            item("Starta saraksts", "competition:participant_list %i" % self.competition.id),
        ]
        self.build_flat_pages(self.competition, child_items)
        if self.competition.map_set.count():
            child_items.append(item("Kartes", "competition:maps %i" % self.competition.id))

        if self.competition.competition_date <= current_date:
            child_items.append(item("Rezultāti", "/media/results/2015_RM_bernu_rezultati.pdf", url_as_pattern=False))
        return item(
            unicode(self.competition),
            "competition:competition %i" % self.competition.id,
            url_as_pattern=True,
            children=child_items,
            in_menu=self.competition.is_in_menu,
        )

    def get_sitetree_add_item(cls):
        """Возвращает элемент древа сайта, указывающий на страницу добавления объекта.

        :return:
        """

        tree_item = item(cls.txt_form_add, cls.get_add_urlname(), access_loggedin=True)
        tree_item.show_on_top = True

        return tree_item

def build_sitetree():
    """Строит древо сайта, исходя из доступных областей сайта.

    :return:
    """
    # Потакаем поведению Django 1.7 при загрузке приложений.
    from sitetree.sitetreeapp import register_dynamic_trees, compose_dynamic_tree
    register_dynamic_trees(
        compose_dynamic_tree((
            tree('main', 'Основное дерево', (
                get_sitetree_root_item((realm.get_sitetree_items() for realm in get_realms().values())),
                item('Вход', 'login', access_guest=True, in_menu=False, in_breadcrumbs=False),
                item('Личное меню', '#', alias='personal', url_as_pattern=False, access_loggedin=True, in_menu=False,
                     in_sitetree=False, children=(
                        item('Профиль', 'users:details request.user.id', access_loggedin=True, in_breadcrumbs=False,
                             in_sitetree=False),
                        item('Настройки', 'users:edit request.user.id', access_loggedin=True, in_breadcrumbs=False,
                             in_sitetree=False),
                        item('Выход', 'logout', access_loggedin=True, in_breadcrumbs=False, in_sitetree=False),
                )),

            )),
            tree('about', 'О проекте', (
                item('Что такое Python', '/promo/',
                     description='Краткие сведения о возможностях и областях применения языка программирования Python.',
                     url_as_pattern=False),
                item('О проекте', '/about/',
                     description='Информация о проекте. О том, как, кем и для чего разрабатывается данный сайт.',
                     url_as_pattern=False),
                item('Карта сайта', '/sitemap/', description='Список разделов на сайте оформленный в виде карты сайта.',
                     url_as_pattern=False),
                item('Поиск по сайту', '/search/site/',
                     description='Глобальный поиск по материалам, расположенным на сайте.',
                     url_as_pattern=False),
                item('Результаты поиска «{{ search_term }}»', '/search/', url_as_pattern=False, in_menu=False,
                     in_sitetree=False),
            ))
        )),
        reset_cache=True
    )

    ReferenceRealm.build_sitetree()

def get_sitetree_root_item(children=None):
    """Возвращает корневой элемент динамического древа сайта.

    :param tuple|generator children: Дочерние динамические элементы.

    """
    return item(
        'Про Python', '/', alias='topmenu', url_as_pattern=False,
        description='Сайт про Питон. Различные материалы по языку программирования Python: '
                    'книги, видео, справочник, сообщества, события, обсуждения и многое другое.',
        children=children)

def sitetrees_build():
    items = []
    for competition in Competition.objects.filter(is_in_menu=True):
        children = []
        if competition.processing_class:
            _class = load_class(competition.processing_class)
            processing = _class(competition=competition)
            items.append(processing.build_menu())
        else:
            items.append(item(unicode(competition), '#', url_as_pattern=False, children=children))
    return (tree('dynamic_competition', items=items),)

    def get_sitetree_items(cls):
        """Возвращает элементы древа сайта.

        :return:
        """
        if cls.sitetree_items is None:
            cls.sitetree_items = item(
                str(cls.model._meta.verbose_name_plural), cls.get_listing_urlname(),
                children=[getattr(cls, 'get_sitetree_%s_item' % view_name)() for view_name in cls.allowed_views if view_name != 'edit']
            )
        return cls.sitetree_items