GtkMenu: Add a separate style class to the toplevel of menus

This is necessary in order to use .window-frame.csd.popup for
styling csd menus.

https://bugzilla.gnome.org/show_bug.cgi?id=731187

diff --git a/gtk/gtkmenu.c b/gtk/gtkmenu.c
index f1bf2436fac04b944c9ad58c272c2f4f63478afc..cb8d98e641036ca18e2a7e2e58595c35b63c52c3 100644 (file)
--- a/gtk/gtkmenu.c
+++ b/gtk/gtkmenu.c
@@ -1099,6 +1099,8 @@ gtk_menu_init (GtkMenu *menu)
   gtk_window_set_resizable (GTK_WINDOW (priv->toplevel), FALSE);
   gtk_window_set_mnemonic_modifier (GTK_WINDOW (priv->toplevel), 0);
 
+  gtk_style_context_add_class (gtk_widget_get_style_context (priv->toplevel), "popup");
+
   /* Refloat the menu, so that reference counting for the menu isn't
    * affected by it being a child of the toplevel
    */