[gtk+/wip/baedert/children] widget: Reset focus widget on all child widgets

[Timm Bäder <baedert src gnome org>]

commit e5201da902b49a67077d6dd8a5f414fe4a2ddfd6
Author: Timm Bäder <mail baedert org>
Date:   Wed Nov 23 20:38:22 2016 +0100

    widget: Reset focus widget on all child widgets

 gtk/gtkwidget.c |   24 +++++++++++++++---------
 1 files changed, 15 insertions(+), 9 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 286a223..126a9d9 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -7272,14 +7272,17 @@ gtk_widget_grab_focus (GtkWidget *widget)
 }
 
 static void
-reset_focus_recurse (GtkWidget *widget,
-                    gpointer   data)
+reset_focus_recurse (GtkWidget *widget)
 {
+  GtkWidget *child;
   gtk_widget_set_focus_child (widget, NULL);
 
-  gtk_container_foreach (GTK_CONTAINER (widget),
-                         reset_focus_recurse,
-                         NULL);
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      reset_focus_recurse (child);
+    }
 }
 
 static void
@@ -7329,13 +7332,16 @@ gtk_widget_real_grab_focus (GtkWidget *focus_widget)
        }
       else if (toplevel != focus_widget)
        {
+          GtkWidget *child;
          /* gtk_widget_grab_focus() operates on a tree without window...
           * actually, this is very questionable behavior.
           */
-
-         gtk_container_foreach (GTK_CONTAINER (toplevel),
-                                reset_focus_recurse,
-                                NULL);
+          for (child = gtk_widget_get_first_child (toplevel);
+               child != NULL;
+               child = gtk_widget_get_next_sibling (child))
+            {
+              reset_focus_recurse (child);
+            }
        }
 
       /* now propagate the new focus up the widget tree and finally