--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/goa/appobjects/gauthservice.py	Wed Nov 05 15:52:50 2008 +0100
@@ -0,0 +1,37 @@
+"""authentication using google authentication service
+
+:organization: Logilab
+:copyright: 2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
+"""
+__docformat__ = "restructuredtext en"
+
+from cubicweb.common.registerers import priority_registerer
+from cubicweb.web.views.basecomponents import UserLink
+from cubicweb.web.views.actions import LogoutAction
+
+from google.appengine.api import users
+
+
+class use_google_auth_registerer(priority_registerer):
+    """register object if use-google-auth is true"""
+    
+    def do_it_yourself(self, registered):
+        if not hasattr(self.config, 'has_resource'):
+            return
+        return super(use_google_auth_registerer, self).do_it_yourself(registered)
+
+
+class GAEUserLink(UserLink):
+    __registerer__ = use_google_auth_registerer
+
+    def anon_user_link(self):
+        self.w(self.req._('anonymous'))
+        self.w(u'&nbsp;[<a class="logout" href="%s">%s</a>]'
+               % (users.create_login_url(self.req.url()), self.req._('login')))
+
+class GAELogoutAction(LogoutAction):
+    __registerer__ = use_google_auth_registerer
+
+    def url(self):
+        return users.create_logout_url(self.req.build_url('logout') )