[gtk/wip/matthiasc/focus2: 6/32] window: Implement the root focus api

[Matthias Clasen <matthiasc src gnome org>]

commit faf3357102f127dfb37486504f2206d545f0bb46
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Mar 2 08:46:21 2019 -0500

    window: Implement the root focus api
    
    This just uses the existing get/set_focus functions.
    We keep them public for now.

 gtk/gtkwindow.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 10e80d195d..87c3aa6927 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -2533,12 +2533,31 @@ gtk_window_root_get_surface_transform (GtkRoot *root,
   *y = margin.top + border.top + padding.top;
 }
 
+static void
+gtk_window_root_set_focus (GtkRoot   *root,
+                           GtkWidget *focus)
+{
+  GtkWindow *self = GTK_WINDOW (root);
+
+  gtk_window_set_focus (self, focus);
+}
+
+static GtkWidget *
+gtk_window_root_get_focus (GtkRoot *root)
+{
+  GtkWindow *self = GTK_WINDOW (root);
+
+  return gtk_window_get_focus (self);
+}
+
 static void
 gtk_window_root_interface_init (GtkRootInterface *iface)
 {
   iface->get_display = gtk_window_root_get_display;
   iface->get_renderer = gtk_window_root_get_renderer;
   iface->get_surface_transform = gtk_window_root_get_surface_transform;
+  iface->set_focus = gtk_window_root_set_focus;
+  iface->get_focus = gtk_window_root_get_focus;
 }
 
 /**