public static function init() {

		if ( self::can_switch_themes() ) {
			add_action( 'admin_bar_menu', array( __CLASS__, 'admin_bar_menu' ), 90 );
			add_action( 'wp_ajax_tts_set_theme', array( __CLASS__, 'set_theme' ) );
		}

		load_plugin_textdomain( 'toolbar-theme-switcher', false, dirname( dirname( plugin_basename( __FILE__ ) ) ) . '/lang' );
	}