builderlistitemfactory: Allow subclasses

It's going to be used with the new GtkColumnViewCell objects, so that
it's backwards compatible with ui file factories that use GtkListItem.

diff --git a/gtk/gtkbuilderlistitemfactory.c b/gtk/gtkbuilderlistitemfactory.c
index cf3f59abafdd8b7db9358b5fcefe56d14b65c20a..de4cf42172576a4085384ccb47bde85426f8ecd5 100644 (file)
--- a/gtk/gtkbuilderlistitemfactory.c
+++ b/gtk/gtkbuilderlistitemfactory.c
@@ -101,6 +101,7 @@ gtk_builder_list_item_factory_setup (GtkListItemFactory *factory,
   if (self->scope)
     gtk_builder_set_scope (builder, self->scope);
 
+  gtk_builder_set_allow_template_parents (builder, TRUE);
   if (!gtk_builder_extend_with_template (builder, G_OBJECT (item), G_OBJECT_TYPE (item),
                                          (const char *)g_bytes_get_data (self->data, NULL),
                                          g_bytes_get_size (self->data),