[gtk/matthiasc/for-master: 2/2] a11y: Widgets have children

[Matthias Clasen <matthiasc src gnome org>]

commit 8e427b7d69d0d80d4efed33d87dda5c463c9d599
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed May 27 22:56:33 2020 -0400

    a11y: Widgets have children
    
    This brings back some of what we lost when
    GtkContainerAccessible went away.

 gtk/a11y/gtkwidgetaccessible.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
---
diff --git a/gtk/a11y/gtkwidgetaccessible.c b/gtk/a11y/gtkwidgetaccessible.c
index e7885705dc..c2ffd44ccd 100644
--- a/gtk/a11y/gtkwidgetaccessible.c
+++ b/gtk/a11y/gtkwidgetaccessible.c
@@ -527,6 +527,41 @@ gtk_widget_accessible_get_attributes (AtkObject *obj)
   return attributes;
 }
 
+static int
+gtk_widget_accessible_get_n_children (AtkObject *object)
+{
+  GtkWidget *window;
+  GtkWidget *child;
+  int count = 0;
+
+  window = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
+  for (child = gtk_widget_get_first_child (GTK_WIDGET (window));
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    count++;
+
+  return count;
+}
+
+static AtkObject *
+gtk_widget_accessible_ref_child (AtkObject *object,
+                                 int        i)
+{
+  GtkWidget *window, *child;
+  int pos;
+
+  window = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
+  for (child = gtk_widget_get_first_child (GTK_WIDGET (window)), pos = 0;
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child), pos++)
+    {
+      if (pos == i)
+        return g_object_ref (gtk_widget_get_accessible (child));
+    }
+
+  return NULL;
+}
+
 static void
 gtk_widget_accessible_class_init (GtkWidgetAccessibleClass *klass)
 {
@@ -541,6 +576,8 @@ gtk_widget_accessible_class_init (GtkWidgetAccessibleClass *klass)
   class->get_index_in_parent = gtk_widget_accessible_get_index_in_parent;
   class->initialize = gtk_widget_accessible_initialize;
   class->get_attributes = gtk_widget_accessible_get_attributes;
+  class->get_n_children = gtk_widget_accessible_get_n_children;
+  class->ref_child = gtk_widget_accessible_ref_child;
 }
 
 static void