[gtk/gtk-4-2: 58/91] a11y: Realize notebook tabs when switching

[Matthias Clasen <matthiasc src gnome org>]

commit 7e3493b15e04b5433ccd5757fd464ba222171c9d
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Apr 20 20:35:22 2021 -0400

    a11y: Realize notebook tabs when switching
    
    We're not moving focus here, so we can't rely
    on that to conjure the a11y objects into existence.

 gtk/gtknotebook.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 380cd51e5e..aa89cf6067 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -5461,6 +5461,9 @@ gtk_notebook_real_switch_page (GtkNotebook     *notebook,
   gtk_widget_set_state_flags (page->tab_widget, GTK_STATE_FLAG_CHECKED, FALSE);
   gtk_widget_set_visible (notebook->header_widget, notebook->show_tabs);
 
+  if (gtk_widget_get_realized (GTK_WIDGET (notebook)))
+    gtk_widget_realize_at_context (notebook->cur_page->tab_widget);
+
   gtk_accessible_update_state (GTK_ACCESSIBLE (notebook->cur_page->tab_widget),
                                GTK_ACCESSIBLE_STATE_SELECTED, TRUE,
                                -1);