/**
* {@inheritdoc}
*/
public function buildOptionsForm(&$form, FormStateInterface $form_state) {
parent::buildOptionsForm($form, $form_state);
$form['value']['#type'] = 'radios';
$form['value']['#title'] = t('Status');
$form['value']['#options'] = [
1 => t('Flagged'),
0 => t('Not flagged'),
// @todo Find out what in the hell filter type ALL is supposed to do.
// 'All' => t('All'),
];
$form['value']['#default_value'] = empty($this->options['value']) ? FALSE : $this->options['value'];
$form['value']['#description'] = '<p>' . t('This filter is only needed if the relationship used has the "Include only flagged content" option <strong>unchecked</strong>. Otherwise, this filter is useless, because all records are already limited to flagged content.') . '</p><p>' . t('By choosing <em>Not flagged</em>, it is possible to create a list of content <a href="@unflagged-url">that is specifically not flagged</a>.', array('@unflagged-url' => 'http://drupal.org/node/299335')) . '</p>';
$form['relationship']['#default_value'] = $this->options['relationship'];
}
