[gtk/gtk-3-24: 1/2] gtknotebookpageaccessible: do not fallback to child accessible for extents

[Emmanuele Bassi <ebassi src gnome org>]

commit 4ffe5a495420406de3a5f24c526574ce7c4c4883
Author: Samuel Thibault <samuel thibault ens-lyon org>
Date:   Tue Apr 21 01:09:07 2020 +0200

    gtknotebookpageaccessible: do not fallback to child accessible for extents
    
    When the notebook page does not have a label, it should not fallback to
    asking its child accessible for extent, since the child might be asking
    exactly the converse when it is a socket, thus getting in an infinite
    loop. When the page does not have a label, is does not really make sense to
    give it an extent anyway.
    
    Fixes atk#18

 gtk/a11y/gtknotebookpageaccessible.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)
---
diff --git a/gtk/a11y/gtknotebookpageaccessible.c b/gtk/a11y/gtknotebookpageaccessible.c
index 0f57c737b8..0fb6920604 100644
--- a/gtk/a11y/gtknotebookpageaccessible.c
+++ b/gtk/a11y/gtknotebookpageaccessible.c
@@ -311,18 +311,10 @@ gtk_notebook_page_accessible_get_extents (AtkComponent *component,
   label = get_label_from_notebook_page (GTK_NOTEBOOK_PAGE_ACCESSIBLE (component));
   if (!label)
     {
-      AtkObject *child;
-
-      *width = 0;
-      *height = 0;
-
-      child = atk_object_ref_accessible_child (ATK_OBJECT (component), 0);
-      if (!child)
-        return;
-
-      atk_component_get_extents (ATK_COMPONENT (child), x, y, NULL, NULL,
-                                 coord_type);
-      g_object_unref (child);
+      *x = -1;
+      *y = -1;
+      *width = -1;
+      *height = -1;
     }
   else
     {