JetEngine QR code macro for Dynamic Link label

code.php

<?php

class JetEngineDlUrlSaver {
	
	private $url = '';
	private static $instance = null;
	
	private function __construct() {
		add_filter( 'jet-engine/listings/dynamic-link/pre-render-link', array( $this, 'store_url' ), 100000, 4 );
	}
	
	public function get_url() {
		return $this->url;
	}
	
	public function store_url( $link, $settings, $class, $render ) {
		$this->url = $render->get_link_url( $settings );
		return $link;
	}
	
	public static function instance() {
		if ( self::$instance === null ) {
			self::$instance = new self;
		}
		
		return self::$instance;
	}
}

JetEngineDlUrlSaver::instance();

add_action( 'jet-engine/register-macros', function() {
	if ( ! jet_engine()->modules->is_module_active( 'qr-code' ) ) {
		return;
	}
	
	class QR_Code_Macro extends \Jet_Engine_Base_Macros {

        public function macros_tag() {
            return 'qr_code';
        }

        public function macros_name() {
            return 'QR Code (Dynamic Link label only)';
        }

        public function macros_args() {
            return array(
				'qr_size' => array(
					'label'   => 'Size',
					'type'    => 'text',
					'default' => '150',
				),
			);
        }

        public function macros_callback( $args = array() ) {
			$value = JetEngineDlUrlSaver::instance()->get_url();
			$size  = ! empty( $args['qr_size'] ) ? $args['qr_size'] : 150;
			return jet_engine_get_qr_code( $value, $size );
        }

    }
    
    new QR_Code_Macro();
} );