ListingEmpty.php

<?php

namespace Drupal\node\Plugin\views\area;

use Drupal\Core\Access\AccessManagerInterface;
use Drupal\Core\Url;
use Drupal\views\Plugin\views\area\AreaPluginBase;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Defines an area plugin to display a node/add link.
 *
 * @ingroup views_area_handlers
 *
 * @ViewsArea("node_listing_empty")
 */
class ListingEmpty extends AreaPluginBase {
    
    /**
     * The access manager.
     *
     * @var \Drupal\Core\Access\AccessManagerInterface
     */
    protected $accessManager;
    
    /**
     * Constructs a new ListingEmpty.
     *
     * @param array $configuration
     *   A configuration array containing information about the plugin instance.
     * @param string $plugin_id
     *   The plugin ID for the plugin instance.
     * @param mixed $plugin_definition
     *   The plugin implementation definition.
     * @param \Drupal\Core\Access\AccessManagerInterface $access_manager
     *   The access manager.
     */
    public function __construct(array $configuration, $plugin_id, $plugin_definition, AccessManagerInterface $access_manager) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->accessManager = $access_manager;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('access_manager'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($empty = FALSE) {
        $account = \Drupal::currentUser();
        if (!$empty || !empty($this->options['empty'])) {
            $element = [
                '#theme' => 'links',
                '#links' => [
                    [
                        'url' => Url::fromRoute('node.add_page'),
                        'title' => $this->t('Add content'),
                    ],
                ],
                '#access' => $this->accessManager
                    ->checkNamedRoute('node.add_page', [], $account),
            ];
            return $element;
        }
        return [];
    }

}