[empathy] roster-window: display a specific message when we are offline

[Guillaume Desmottes <gdesmott src gnome org>]

commit e52959e0abfcfa322bf3e0e7587e62f1d49d8699
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Tue Sep 4 14:34:10 2012 +0200

    roster-window: display a specific message when we are offline
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683326

 src/empathy-roster-window.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/src/empathy-roster-window.c b/src/empathy-roster-window.c
index b92507b..ffaa6b9 100644
--- a/src/empathy-roster-window.c
+++ b/src/empathy-roster-window.c
@@ -1563,6 +1563,7 @@ set_notebook_page (EmpathyRosterWindow *self)
 {
   GList *accounts;
   guint len;
+  TpConnectionPresenceType presence;
 
   accounts = tp_account_manager_get_valid_accounts (
       self->priv->account_manager);
@@ -1588,6 +1589,17 @@ set_notebook_page (EmpathyRosterWindow *self)
       goto out;
     }
 
+  presence = tp_account_manager_get_most_available_presence (
+      self->priv->account_manager, NULL, NULL);
+
+  if (presence == TP_CONNECTION_PRESENCE_TYPE_OFFLINE)
+    {
+      display_page_message (self,
+          _("Change your presence to see contacts here"),
+          FALSE, FALSE);
+      goto out;
+    }
+
   if (empathy_roster_view_is_empty (self->priv->view))
     {
       if (empathy_roster_view_is_searching (self->priv->view))