--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_content/reference/zmi/__init__.py	Sat Mar 10 02:35:15 2018 +0100
@@ -0,0 +1,74 @@
+#
+# Copyright (c) 2008-2015 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+
+__docformat__ = 'restructuredtext'
+
+
+# import standard library
+
+# import interfaces
+from pyams_content.interfaces import MANAGE_SITE_ROOT_PERMISSION
+from pyams_content.reference.interfaces import IReferenceManager, IReferenceInfo
+from pyams_i18n.interfaces import II18n
+from pyams_skin.interfaces.container import ITableElementName
+from pyams_skin.interfaces.viewlet import ITopLinksViewletManager, IBreadcrumbItem
+from pyams_skin.layer import IPyAMSLayer
+from pyams_zmi.layer import IAdminLayer
+
+# import packages
+from pyams_skin.viewlet.breadcrumb import BreadcrumbItem
+from pyams_skin.viewlet.toplinks import TopLinksViewlet, TopLinksMenu
+from pyams_utils.adapter import adapter_config, ContextRequestAdapter
+from pyams_utils.registry import get_local_registry
+from pyams_utils.url import absolute_url
+from pyams_viewlet.viewlet import viewlet_config
+from zope.interface import Interface
+
+from pyams_content import _
+
+
+@viewlet_config(name='references.menu', layer=IAdminLayer, manager=ITopLinksViewletManager,
+                permission=MANAGE_SITE_ROOT_PERMISSION, weight=70)
+class ReferencesMenu(TopLinksViewlet):
+    """References tables menu"""
+
+    label = ''
+    css_class = 'top-menu bordered margin-top-10'
+    dropdown_label = _("References")
+
+    def update(self):
+        super(ReferencesMenu, self).update()
+        registry = get_local_registry()
+        references = registry.queryUtility(IReferenceManager)
+        if references is not None:
+            for table in references.values():
+                menu = TopLinksMenu(self.context, self.request, self.__parent__, self)
+                menu.label = II18n(table).query_attribute('short_name', request=self.request) or table.__name__
+                menu.url = absolute_url(table, self.request, 'admin#contents.html')
+                self.viewlets.append(menu)
+
+
+@adapter_config(context=(IReferenceManager, IPyAMSLayer), provides=IBreadcrumbItem)
+class ReferenceManagerBreadcrumbAdapter(BreadcrumbItem):
+    """References tables manager breadcrumb adapter"""
+
+    label = _("References tables")
+    url = None
+
+
+@adapter_config(context=(IReferenceInfo, Interface), provides=ITableElementName)
+class ReferenceInfoTableElementName(ContextRequestAdapter):
+    """Reference table element name"""
+
+    @property
+    def name(self):
+        return II18n(self.context).query_attribute('title', request=self.request)