[gnome-contacts/new-design] Add presence_changed specific signal to use for presence monitoring only

[Alexander Larsson <alexl src gnome org>]

commit ce260307820c29ddc3fe0e5b0d6251e505fb1fc3
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Dec 12 11:24:02 2011 +0100

    Add presence_changed specific signal to use for presence monitoring only

 src/contacts-contact.vala |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/contacts-contact.vala b/src/contacts-contact.vala
index 0d8b5ee..f56c44c 100644
--- a/src/contacts-contact.vala
+++ b/src/contacts-contact.vala
@@ -94,7 +94,7 @@ public class Contacts.ContactPresence : Grid {
 
     update_presence_widgets ();
 
-    var id = contact.changed.connect ( () => {
+    var id = contact.presence_changed.connect ( () => {
 	update_presence_widgets ();
       });
 
@@ -251,6 +251,7 @@ public class Contacts.Contact : GLib.Object  {
 
   private string filter_data;
 
+  public signal void presence_changed ();
   public signal void changed ();
 
   private bool _is_hidden;
@@ -304,6 +305,7 @@ public class Contacts.Contact : GLib.Object  {
   }
 
   private void persona_notify_cb (ParamSpec pspec) {
+    this.presence_changed ();
     queue_changed ();
   }