class JobItemState

1. 8.x-1.x src/Plugin/views/field/JobItemState.php \Drupal\tmgmt\Plugin\views\field\JobItemState
2. 8.x-1.x src/Plugin/views/filter/JobItemState.php \Drupal\tmgmt\Plugin\views\filter\JobItemState

class JobItemState extends ManyToOne {

  /**
   * Where the $query object will reside.
   *
   * @var \Drupal\views\Plugin\views\query\Sql
   */
  public $query = NULL;

  /**
   * Gets the values of the options.
   *
   * @return array
   *   Returns options.
   */
  public function getValueOptions() {
    $this->valueOptions = [
      'open_job_items' => t('- Open jobs items -'),
    ];
    $state_definitions = JobItem::getStateDefinitions();
    foreach ($state_definitions as $state => $state_definition) {
      $this->valueOptions[$state] = $state_definition['label'];
    }
    return $this->valueOptions;
  }

  /**
   * Set the operators.
   *
   * @return array
   *   Returns operators.
   */
  function operators() {
    $operators = [
      'job_item_state' => [
        'title' => $this
          ->t('Job State'),
        'short' => $this
          ->t('job state'),
        'values' => 1,
      ],
    ];
    return $operators;
  }

  /**
   * {@inheritdoc}
   */
  public function query() {
    $key = reset($this->value);
    $field = $this->field;
    $table = $this->table;
    switch ($key) {
      case 'open_job_items':
        $this->query
          ->addWhere($this->options['group'], "{$table}.{$field}", [
          0,
          1,
          2,
        ], 'IN');
        break;
      default:
        $state_definitions = JobItem::getStateDefinitions();
        if ($state_definitions[$key]['type'] == 'translator_state') {
          $field = 'translator_state';
        }
        $this->query
          ->addWhere($this->options['group'], "{$table}.{$field}", $key, '=');
        break;
    }
  }

}