DblogTypes.php

<?php

namespace Drupal\dblog\Plugin\views\filter;

use Drupal\Core\Form\FormStateInterface;
use Drupal\dblog\DbLogFilters;
use Drupal\views\Attribute\ViewsFilter;
use Drupal\views\Plugin\views\filter\InOperator;

/**
 * Exposes log types to views module.
 */
class DblogTypes extends InOperator {
  public function __construct(array $configuration, $plugin_id, $plugin_definition, protected readonly DbLogFilters $dbLogFilters) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getValueOptions() {
    if (!isset($this->valueOptions)) {
      $this->valueOptions = $this->dbLogFilters
        ->getMessageTypes();
    }
    return $this->valueOptions;
  }
  
  /**
   * {@inheritdoc}
   */
  protected function valueForm(&$form, FormStateInterface $form_state) {
    parent::valueForm($form, $form_state);
    $form['value']['#access'] = !empty($form['value']['#options']);
  }

}