header bar: Stop using ::hierarchy-changed

Use the root and unroot vfuncs instead.

diff --git a/gtk/gtkheaderbar.c b/gtk/gtkheaderbar.c
index ab913812e431b4ca33f52e6d2c8f391221489a34..828250f653d8c0e77b4689022eae82290b10eae2 100644 (file)
--- a/gtk/gtkheaderbar.c
+++ b/gtk/gtkheaderbar.c
@@ -1755,11 +1755,12 @@ surface_state_changed (GtkWidget *widget)
 }
 
 static void
-gtk_header_bar_hierarchy_changed (GtkWidget *widget,
-                                  GtkWidget *previous_toplevel)
+gtk_header_bar_root (GtkWidget *widget)
 {
   GtkHeaderBar *bar = GTK_HEADER_BAR (widget);
 
+  GTK_WIDGET_CLASS (gtk_header_bar_parent_class)->root (widget);
+
   _gtk_header_bar_update_window_buttons (bar);
 }
 
@@ -1779,7 +1780,7 @@ gtk_header_bar_class_init (GtkHeaderBarClass *class)
   widget_class->measure = gtk_header_bar_measure;
   widget_class->realize = gtk_header_bar_realize;
   widget_class->unrealize = gtk_header_bar_unrealize;
-  widget_class->hierarchy_changed = gtk_header_bar_hierarchy_changed;
+  widget_class->root = gtk_header_bar_root;
 
   container_class->add = gtk_header_bar_add;
   container_class->remove = gtk_header_bar_remove;