[gtk+] GtkAssistant: Fix problems with gtk_widget_show_all()

[Bastien Nocera <hadess src gnome org>]

commit a0fc947f895a33479ea3d7e7da88faaac8998ecb
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Sep 22 19:46:40 2011 +0100

    GtkAssistant: Fix problems with gtk_widget_show_all()
    
    gtk_widget_show_all() would have shown every single item inside
    the GtkAssistant sidebar, as well as all the navigation buttons.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=659826

 gtk/gtkassistant.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkassistant.c b/gtk/gtkassistant.c
index 4060693..ed8fc31 100644
--- a/gtk/gtkassistant.c
+++ b/gtk/gtkassistant.c
@@ -1018,6 +1018,13 @@ gtk_assistant_init (GtkAssistant *assistant)
   gtk_size_group_add_widget (priv->button_size_group, priv->cancel);
   gtk_size_group_add_widget (priv->button_size_group, priv->last);
 
+  gtk_widget_set_no_show_all (priv->close, TRUE);
+  gtk_widget_set_no_show_all (priv->apply, TRUE);
+  gtk_widget_set_no_show_all (priv->forward, TRUE);
+  gtk_widget_set_no_show_all (priv->back, TRUE);
+  gtk_widget_set_no_show_all (priv->cancel, TRUE);
+  gtk_widget_set_no_show_all (priv->last, TRUE);
+
   if (!alternative_button_order (assistant))
     {
       gtk_box_pack_end (GTK_BOX (priv->action_area), priv->apply, FALSE, FALSE, 0);
@@ -1608,7 +1615,9 @@ gtk_assistant_insert_page (GtkAssistant *assistant,
   page_info = g_slice_new0 (GtkAssistantPage);
   page_info->page  = page;
   page_info->regular_title = gtk_label_new (NULL);
+  gtk_widget_set_no_show_all (page_info->regular_title, TRUE);
   page_info->current_title = gtk_label_new (NULL);
+  gtk_widget_set_no_show_all (page_info->current_title, TRUE);
 
   /* Note: we need to use misc alignment here as long as GtkLabel
    * pays attention to it. GtkWiget::halign is ineffective, since