root: Add focus and default widgets

These are part of what GtkRoot will manage.
Use the GtkRoot api for them in the inspector.

gtk/gtkroot.c

@@ -58,12 +58,26 @@ gtk_root_default_get_surface_transform (GtkRoot *self,
   *y = 0;
 }
 
+static GtkWidget *
+gtk_root_default_get_focus (GtkRoot *self)
+{
+  return NULL;
+}
+
+static GtkWidget *
+gtk_root_default_get_default (GtkRoot *self)
+{
+  return NULL;
+}
+
 static void
 gtk_root_default_init (GtkRootInterface *iface)
 {
   iface->get_display = gtk_root_default_get_display;
   iface->get_renderer = gtk_root_default_get_renderer;
   iface->get_surface_transform = gtk_root_default_get_surface_transform;
+  iface->get_focus = gtk_root_default_get_focus;
+  iface->get_default = gtk_root_default_get_default;
 }
 
 GdkDisplay *
@@ -102,3 +116,19 @@ gtk_root_get_surface_transform (GtkRoot *self,
   iface = GTK_ROOT_GET_IFACE (self);
   return iface->get_surface_transform (self, x, y);
 }
+
+GtkWidget *
+gtk_root_get_focus (GtkRoot *self)
+{
+  g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
+
+  return GTK_ROOT_GET_IFACE (self)->get_focus (self);
+}
+
+GtkWidget *
+gtk_root_get_default (GtkRoot *self)
+{
+  g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
+
+  return GTK_ROOT_GET_IFACE (self)->get_default (self);
+}

gtk/gtkroot.h

@@ -51,6 +51,8 @@ struct _GtkRootInterface
   void                  (* get_surface_transform)       (GtkRoot                *root,
                                                          int                    *x,
                                                          int                    *y);
+  GtkWidget *           (* get_focus)                   (GtkRoot                *root);
+  GtkWidget *           (* get_default)                 (GtkRoot                *root);
 };
 
 

gtk/gtkrootprivate.h

@@ -11,6 +11,8 @@ GskRenderer *           gtk_root_get_renderer           (GtkRoot
 void                    gtk_root_get_surface_transform  (GtkRoot                *self,
                                                          int                    *x,
                                                          int                    *y);
+GtkWidget *             gtk_root_get_focus              (GtkRoot                *self);
+GtkWidget *             gtk_root_get_default            (GtkRoot                *self);
 G_END_DECLS
 
 #endif /* __GTK_ROOT_PRIVATE_H__ */

gtk/gtkwindow.c

@@ -2534,12 +2534,35 @@ gtk_window_root_get_surface_transform (GtkRoot *root,
   *y = margin.top + border.top + padding.top;
 }
 
+static GtkWidget *
+gtk_window_root_get_focus (GtkRoot *root)
+{
+  GtkWindow *window = GTK_WINDOW (root);
+  GtkWindowPrivate *priv = gtk_window_get_instance_private (window);
+
+  if (priv->initial_focus)
+    return priv->initial_focus;
+  else
+    return priv->focus_widget;
+}
+
+static GtkWidget *
+gtk_window_root_get_default (GtkRoot *root)
+{
+  GtkWindow *window = GTK_WINDOW (root);
+  GtkWindowPrivate *priv = gtk_window_get_instance_private (window);
+
+  return priv->default_widget;
+}
+
 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->get_focus = gtk_window_root_get_focus;
+  iface->get_default = gtk_window_root_get_default;
 }
 
 /**

gtk/inspector/misc-info.c

@@ -29,6 +29,7 @@
 #include "gtkframe.h"
 #include "gtkbutton.h"
 #include "gtkwidgetprivate.h"
+#include "gtkrootprivate.h"
 
 
 struct _GtkInspectorMiscInfoPrivate {
@@ -190,7 +191,7 @@ update_default_widget (GtkInspectorMiscInfo *sl)
 {
   GtkWidget *widget;
 
-  widget = gtk_window_get_default_widget (GTK_WINDOW (sl->priv->object));
+  widget = gtk_root_get_default (GTK_ROOT (sl->priv->object));
   if (widget)
     {
       gchar *tmp;
@@ -222,7 +223,7 @@ update_focus_widget (GtkInspectorMiscInfo *sl)
 {
   GtkWidget *widget;
 
-  widget = gtk_window_get_focus (GTK_WINDOW (sl->priv->object));
+  widget = gtk_root_get_focus (GTK_ROOT (sl->priv->object));
   if (widget)
     {
       gchar *tmp;
@@ -355,7 +356,7 @@ update_info (gpointer data)
                           gtk_buildable_get_name (GTK_BUILDABLE (sl->priv->object)));
     }
 
-  if (GTK_IS_WINDOW (sl->priv->object))
+  if (GTK_IS_ROOT (sl->priv->object))
     {
       update_default_widget (sl);
       update_focus_widget (sl);