[gnome-disk-utility] Don't use deprecated gtk_style_context_notify_state_change() function

[David Zeuthen <davidz src gnome org>]

commit b466492c17729e10abe74f68529ac1c4e1fbcea5
Author: David Zeuthen <zeuthen gmail com>
Date:   Tue Jan 8 12:32:10 2013 -0500

    Don't use deprecated gtk_style_context_notify_state_change() function
    
    This doesn't completely fix the issues with spinners in the grid not
    animating but it makes it a little better at least. Looks like it's a
    GTK+ bug :-/
    
    Signed-off-by: David Zeuthen <zeuthen gmail com>

 src/disks/gduvolumegrid.c |   16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)
---
diff --git a/src/disks/gduvolumegrid.c b/src/disks/gduvolumegrid.c
index d84558b..e5fe1c8 100644
--- a/src/disks/gduvolumegrid.c
+++ b/src/disks/gduvolumegrid.c
@@ -766,10 +766,13 @@ render_element (GduVolumeGrid *grid,
   gtk_style_context_save (context);
   state = gtk_widget_get_state_flags (GTK_WIDGET (grid));
 
+  state &= ~(GTK_STATE_FLAG_SELECTED | GTK_STATE_FLAG_FOCUSED);
   if (is_selected)
     state |= GTK_STATE_FLAG_SELECTED;
   if (is_grid_focused)
     state |= GTK_STATE_FLAG_FOCUSED;
+  if (element->show_spinner)
+    state |= GTK_STATE_FLAG_ACTIVE;
   gtk_style_context_set_state (context, state);
 
   /* frames */
@@ -958,15 +961,10 @@ gdu_volume_grid_draw (GtkWidget *widget,
 
   if (animate_spinner != grid->animating_spinner)
     {
-      GtkStyleContext *context = gtk_widget_get_style_context (widget);
-      gtk_style_context_save (context);
-      gtk_style_context_add_class (context, GTK_STYLE_CLASS_SPINNER);
-      gtk_style_context_notify_state_change (context,
-                                             gtk_widget_get_window (widget),
-                                             NULL, /* region_id */
-                                             GTK_STATE_ACTIVE,
-                                             animate_spinner);
-      gtk_style_context_restore (context);
+      if (animate_spinner)
+        gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_ACTIVE, FALSE);
+      else
+        gtk_widget_unset_state_flags (widget, GTK_STATE_FLAG_ACTIVE);
     }
   if (animate_spinner)
     grid->animating_spinner = TRUE;