public function onKernelController(FilterControllerEvent $event) {
        $css = rtrim($this->cssBase, '/') . '/' . trim($this->lteAdmin, '/');
        $mng = $this->manager;

        $mng->registerStyle('jquery-ui', $css . '/jQueryUI/jquery-ui-1.10.3.custom.css');
        $mng->registerStyle('bootstrap', $css . '/bootstrap.css', ['jquery-ui']);
        $mng->registerStyle('bootstrap-slider', $css . '/bootstrap-slider/slider.css', ['bootstrap']);
        $mng->registerStyle('datatables', $css . '/datatables/dataTables.bootstrap.css', ['bootstrap']);
        $mng->registerStyle('fontawesome', $css . '/font-awesome.css');
        $mng->registerStyle('ionicons', $css . '/ionicons.css');
        $mng->registerStyle('admin-lte', $css . '/AdminLTE.css', ['bootstrap-slider', 'fontawesome', 'ionicons', 'datatables']);
        $mng->registerStyle('bs-colorpicker', $css . '/colorpicker/bootstrap-colorpicker.css', ['admin-lte']);
        $mng->registerStyle('daterangepicker', $css . '/daterangepicker/daterangepicker.css', ['admin-lte']);
        $mng->registerStyle('timepicker', $css . '/timepicker/bootstrap-timepicker.css', ['admin-lte']);
        $mng->registerStyle('wysiwyg', $css . '/bootstrap-wysihtml5/bootstrap3-wysihtml5.css', ['admin-lte']);
    }