[gtk/a11y/atcontext-realize: 4/7] range: Hide internals from accessibility

[Emmanuele Bassi <ebassi src gnome org>]

commit f727b2b3e227be540b0f32524e67713ddb8a5ff1
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Oct 21 08:00:09 2020 -0400

    range: Hide internals from accessibility
    
    The nameless, faceless gizmos inside a range do not
    contribute to the accessible experience at all, lets
    not add them to the tree. All the accessible functionality
    is on the main widget (either a scale or a scrollbar).

 gtk/gtkrange.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkrange.c b/gtk/gtkrange.c
index 6b9ead4fd0..650a9e292e 100644
--- a/gtk/gtkrange.c
+++ b/gtk/gtkrange.c
@@ -529,12 +529,13 @@ gtk_range_init (GtkRange *range)
 
   gtk_widget_update_orientation (GTK_WIDGET (range), priv->orientation);
 
-  priv->trough_widget = gtk_gizmo_new ("trough",
-                                       gtk_range_measure_trough,
-                                       gtk_range_allocate_trough,
-                                       gtk_range_render_trough,
-                                       NULL,
-                                       NULL, NULL);
+  priv->trough_widget = gtk_gizmo_new_with_role ("trough",
+                                                 GTK_ACCESSIBLE_ROLE_NONE,
+                                                 gtk_range_measure_trough,
+                                                 gtk_range_allocate_trough,
+                                                 gtk_range_render_trough,
+                                                 NULL,
+                                                 NULL, NULL);
 
   gtk_widget_set_parent (priv->trough_widget, GTK_WIDGET (range));