[gnome-contacts] Properly remove style classes when presence state changes

[Alexander Larsson <alexl src gnome org>]

commit 1517b161375e1bb00787dd6768c57952b356122c
Author: Alexander Larsson <alexl redhat com>
Date:   Wed Jun 29 10:39:09 2011 +0200

    Properly remove style classes when presence state changes

 src/contacts-contact.vala |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/src/contacts-contact.vala b/src/contacts-contact.vala
index 2b47978..75d1c5a 100644
--- a/src/contacts-contact.vala
+++ b/src/contacts-contact.vala
@@ -25,6 +25,7 @@ public class Contacts.ContactPresence : Grid {
   Contact contact;
   Image image;
   Label label;
+  string last_class;
 
   private void update_presence_widgets (Image image, Label label) {
     PresenceType type;
@@ -44,7 +45,10 @@ public class Contacts.ContactPresence : Grid {
     }
 
     image.set_from_icon_name (Contact.presence_to_icon_full (type), IconSize.MENU);
-    image.get_style_context ().add_class (Contact.presence_to_class (type));
+    if (last_class != null)
+      image.get_style_context ().remove_class (last_class);
+    last_class = Contact.presence_to_class (type);
+    image.get_style_context ().add_class (last_class);
     image.show ();
     label.show ();
     if (message.length == 0)
@@ -431,12 +435,15 @@ public class Contacts.Contact : GLib.Object  {
 
     var i = new Image ();
     i.set_from_icon_name (presence_to_icon_full (tp.presence_type), IconSize.MENU);
-    i.get_style_context ().add_class (Contact.presence_to_class (tp.presence_type));
+    string last_class = Contact.presence_to_class (tp.presence_type);
+    i.get_style_context ().add_class (last_class);
     i.set_tooltip_text (tp.presence_message);
 
     var id1 = tp.notify["presence-type"].connect ((pspec) => {
       i.set_from_icon_name (presence_to_icon_full (tp.presence_type), IconSize.MENU);
-      i.get_style_context ().add_class (Contact.presence_to_class (tp.presence_type));
+      i.get_style_context ().remove_class (last_class);
+      last_class = Contact.presence_to_class (tp.presence_type);
+      i.get_style_context ().add_class (last_class);
      });
     var id2 = tp.notify["presence-message"].connect ( (pspec) => {
 	i.set_tooltip_text (tp.presence_message);