private function __construct()
{
self::$languages = apply_filters('wpml_active_languages', NULL, 'orderby=name&order=asc');
self::$current_language = apply_filters('wpml_current_language', NULL);
self::$default_language = apply_filters('wpml_default_language', NULL);
add_filter('assign_layout_to_post_object', array(&$this, 'handle_save_update_assignment'), 99, 5);
add_filter('remove_layout_assignment_to_post_object', array(&$this, 'handle_remove_assignment'), 99, 4);
add_action('ddl-add-wpml-custom-switcher', array(&$this, 'print_wpml_custom_switcher'));
add_action('ddl-wpml-switch-language', array(&$this, 'ddl_wpml_switch_language'), 10, 1);
add_action('ddl-wpml-switcher-scripts', array(&$this, 'enqueue_language_switcher_script'));
}
