--- a/sat_frontends/quick_frontend/constants.py	Sun Jun 24 21:59:29 2018 +0200
+++ b/sat_frontends/quick_frontend/constants.py	Tue Jun 26 07:09:49 2018 +0200
@@ -48,9 +48,12 @@
     CONTACT_SPECIAL = 'special'
     CONTACT_SPECIAL_GROUP = 'group'  # group chat special entity
     CONTACT_SELECTED = 'selected'
-    CONTACT_PROFILE = 'profile' # used in handler to track where the contact is coming from
+    # used in handler to track where the contact is coming from
+    CONTACT_PROFILE = 'profile'
     CONTACT_SPECIAL_ALLOWED = (CONTACT_SPECIAL_GROUP,)  # allowed values for special flag
-    CONTACT_DATA_FORBIDDEN = {CONTACT_GROUPS, CONTACT_RESOURCES, CONTACT_MAIN_RESOURCE, CONTACT_SELECTED, CONTACT_PROFILE}  # set of forbidden names for contact data
+    # set of forbidden names for contact data
+    CONTACT_DATA_FORBIDDEN = {CONTACT_GROUPS, CONTACT_RESOURCES, CONTACT_MAIN_RESOURCE,
+                              CONTACT_SELECTED, CONTACT_PROFILE}
 
     # Chats
     CHAT_STATE_ICON = {
@@ -79,9 +82,12 @@
     UPDATE_MODIFY = 'MODIFY'
     UPDATE_ADD = 'ADD'
     UPDATE_SELECTION = 'SELECTION'
-    UPDATE_STRUCTURE = 'STRUCTURE' # high level update (i.e. not item level but organisation of items)
+    # high level update (i.e. not item level but organisation of items)
+    UPDATE_STRUCTURE = 'STRUCTURE'
 
-    LISTENERS = {'avatar', 'nick', 'presence', 'profilePlugged', 'disconnect', 'gotMenus', 'menu', 'notification', 'notificationsClear', 'progressFinished', 'progressError'}
+    LISTENERS = {'avatar', 'nick', 'presence', 'profilePlugged', 'disconnect', 'gotMenus',
+                 'menu', 'notification', 'notificationsClear', 'progressFinished',
+                 'progressError'}
 
     # Notifications
     NOTIFY_MESSAGE = 'MESSAGE'  # a message has been received

--- a/sat_frontends/quick_frontend/quick_app.py	Sun Jun 24 21:59:29 2018 +0200
+++ b/sat_frontends/quick_frontend/quick_app.py	Tue Jun 26 07:09:49 2018 +0200
@@ -793,19 +793,45 @@
         if type == "subscribed":
             # this is a subscription confirmation, we just have to inform user
             # TODO: call self.getEntityMBlog to add the new contact blogs
-            self.showDialog(_("The contact %s has accepted your subscription") % entity.bare, _('Subscription confirmation'))
+            self.showDialog(_(u"The contact {contact} has accepted your subscription")
+                            .format(contact=entity.bare), _(u'Subscription confirmation'))
         elif type == "unsubscribed":
             # this is a subscription refusal, we just have to inform user
-            self.showDialog(_("The contact %s has refused your subscription") % entity.bare, _('Subscription refusal'), 'error')
+            self.showDialog(_(u"The contact {contact} has refused your subscription")
+                              .format(contact=entity.bare),
+                            _(u'Subscription refusal'),
+                            'error')
         elif type == "subscribe":
             # this is a subscriptionn request, we have to ask for user confirmation
             # TODO: use sat.stdui.ui_contact_list to display the groups selector
-            self.showDialog(_("The contact %s wants to subscribe to your presence.\nDo you accept ?") % entity.bare, _('Subscription confirmation'), 'yes/no', answer_cb=self._subscribe_cb, answer_data=(entity, profile))
+            self.showDialog(_(u"The contact {contact} wants to subscribe to your presence"
+                              u".\nDo you accept ?").format(contact=entity.bare),
+                              _('Subscription confirmation'),
+                              'yes/no',
+                              answer_cb=self._subscribe_cb,
+                              answer_data=(entity, profile))
 
     def showDialog(self, message, title, type="info", answer_cb=None, answer_data=None):
+        """Show a dialog to user
+
+        Frontends must override this method
+        @param message(unicode): body of the dialog
+        @param title(unicode): title of the dialog
+        @param type(unicode): one of:
+            - "info": information dialog (callbacks not used)
+            - "warning": important information to notice (callbacks not used)
+            - "error": something went wrong (callbacks not used)
+            - "yes/no": a dialog with 2 choices (yes and no)
+        @param answer_cb(callable): method to call on answer.
+            Arguments depend on dialog type:
+            - "yes/no": argument is a boolean (True for yes)
+        @param answer_data(object): data to link on callback
+        """
+        # FIXME: misnamed method + types are not well chosen. Need to be rethought
         raise NotImplementedError
 
     def showAlert(self, message):
+        # FIXME: doesn't seems used anymore, to remove?
         pass  #FIXME
 
     def dialogFailure(self, failure):