[gnome-initial-setup] gis-assistant: Make the back/forward buttons insensitive, not invisible

[Jasper St. Pierre <jstpierre src gnome org>]

commit 5b49301c20dee8106c346809bc9eb119a466a8dd
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Jan 17 22:08:05 2013 -0500

    gis-assistant: Make the back/forward buttons insensitive, not invisible
    
    This means that buttons won't jump around on us.

 gnome-initial-setup/gis-assistant.c |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/gnome-initial-setup/gis-assistant.c b/gnome-initial-setup/gis-assistant.c
index 334d4d5..9bfb3d3 100644
--- a/gnome-initial-setup/gis-assistant.c
+++ b/gnome-initial-setup/gis-assistant.c
@@ -149,13 +149,12 @@ update_navigation_buttons (GisAssistant *assistant)
 
   page_priv = page->assistant_priv;
 
-  can_go_forward = gis_page_get_complete (page);
-  gtk_widget_set_sensitive (priv->forward, can_go_forward);
-
   is_first_page = (page_priv->link->prev == NULL);
+  gtk_widget_set_sensitive (priv->back, !is_first_page);
+
   is_last_page = (page_priv->link->next == NULL);
-  gtk_widget_set_visible (priv->back, !is_first_page);
-  gtk_widget_set_visible (priv->forward, !is_last_page);
+  can_go_forward = gis_page_get_complete (page) && !is_last_page;
+  gtk_widget_set_sensitive (priv->forward, can_go_forward);
 }
 
 static void