', esc_html__( 'Premium', 'insta-gallery' ) ), 'edit_posts', self::$slug, array( $this, 'add_panel' ) ); } function add_panel() { global $submenu; include QLIGG_PLUGIN_DIR . '/includes/view/backend/pages/parts/header.php'; include QLIGG_PLUGIN_DIR . '/includes/view/backend/pages/premium.php'; } function init() { add_action( 'admin_menu', array( $this, 'add_menu' ) ); add_action( 'admin_footer', array( $this, 'add_css' ) ); } function add_css() { if ( $this->is_edit_page() || $this->is_edit_page( 'new' ) || $this->is_edit_page( 'edit' ) ) { if ( ! class_exists( 'QLIGG_PRO' ) ) { ?> init(); } return self::$instance; } } QLIGG_Premium_Controller::instance();