UnapprovedComments.php

<?php

namespace Drupal\comment\Plugin\Menu\LocalTask;

use Drupal\comment\CommentStorageInterface;
use Drupal\Core\Menu\LocalTaskDefault;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\Request;

/**
 * Provides a local task that shows the amount of unapproved comments.
 */
class UnapprovedComments extends LocalTaskDefault implements ContainerFactoryPluginInterface {
    use StringTranslationTrait;
    
    /**
     * The comment storage service.
     *
     * @var \Drupal\comment\CommentStorageInterface
     */
    protected $commentStorage;
    
    /**
     * Construct the UnapprovedComments object.
     *
     * @param array $configuration
     *   A configuration array containing information about the plugin instance.
     * @param string $plugin_id
     *   The plugin_id for the plugin instance.
     * @param array $plugin_definition
     *   The plugin implementation definition.
     * @param \Drupal\comment\CommentStorageInterface $comment_storage
     *   The comment storage service.
     */
    public function __construct(array $configuration, $plugin_id, array $plugin_definition, CommentStorageInterface $comment_storage) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->commentStorage = $comment_storage;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('entity_type.manager')
            ->getStorage('comment'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getTitle(Request $request = NULL) {
        return $this->t('Unapproved comments (@count)', [
            '@count' => $this->commentStorage
                ->getUnapprovedCount(),
        ]);
    }

}