fix inviting several contacts to a room. And don't allow to invite transports. Fixes 7527

src/gui_menu_builder.py

@@ -109,8 +109,18 @@ def build_invite_submenu(invite_menuitem, list_, ignore_rooms=[]):
             resource = None
         invite_to_new_room_menuitem.connect('activate',
             roster.on_invite_to_new_room, list_, resource)
+    elif len(list_) > 1:
+        list2 = []
+        for (c, a) in list_:
+            if c.supports(NS_MUC):
+                list2.append((c, a))
+        if len(list2) > 0:
+            invite_to_new_room_menuitem.connect('activate',
+                roster.on_invite_to_new_room, list2, None)
         else:
-        invite_menuitem.set_sensitive(True)
+            invite_menuitem.set_sensitive(False)
+    else:
+        invite_menuitem.set_sensitive(False)
     # transform None in 'jabber'
     c_t = contacts_transport or 'jabber'
     muc_jid = {}

src/roster_window.py

@@ -5782,12 +5782,15 @@ class RosterWindow:
                 self.on_send_single_message_menuitem_activate, account, list_)
 
             # Invite to
-            invite_menuitem = Gtk.ImageMenuItem.new_with_mnemonic(_('In_vite to'))
+            if group != _('Transports'):
+                invite_menuitem = Gtk.ImageMenuItem.new_with_mnemonic(
+                    _('In_vite to'))
                 muc_icon = gtkgui_helpers.load_icon('muc_active')
                 if muc_icon:
                     invite_menuitem.set_image(muc_icon)
 
-            gui_menu_builder.build_invite_submenu(invite_menuitem, list_online)
+                gui_menu_builder.build_invite_submenu(invite_menuitem,
+                    list_online)
                 menu.append(invite_menuitem)
 
             # Send Custom Status