public function ViewsIfEmpty::buildOptionsForm in Views If Empty 8

Default options form that provides the label widget that all fields should have.

Overrides FieldPluginBase::buildOptionsForm

File

src/Plugin/views/field/ViewsIfEmpty.php, line 60

Contains \Drupal\views_ifempty\Plugin\views\field\ViewsIfEmpty.

Class

ViewsIfEmpty

Field handler to output an alternate field when a field is empty.

Namespace

Drupal\views_ifempty\Plugin\views\field

Code

public function buildOptionsForm(&$form, FormStateInterface $form_state) {
  parent::buildOptionsForm($form, $form_state);

  // Scan all the fields and add them as options for our field selectors.
  $fields = array(
    0 => '- ' . $this
      ->t('no field selected') . ' -',
  );
  foreach ($this->view->display_handler
    ->getHandlers('field') as $field => $handler) {

    // We only use fields up to (not including) this one.
    if ($field == $this->options['id']) {
      break;
    }
    $fields[$field] = $handler
      ->adminLabel();
  }
  $form['emptyfield'] = array(
    '#type' => 'select',
    '#title' => $this
      ->t('If this field is empty'),
    '#description' => $this
      ->t('Check this field to see if is empty. This field will be output normally if not empty.'),
    '#options' => $fields,
    '#default_value' => $this->options['emptyfield'],
  );
  $form['outputfield'] = array(
    '#type' => 'select',
    '#title' => $this
      ->t('Then output this field'),
    '#description' => $this
      ->t('Only output this field when the other field is empty. This field will be hidden if the other field is not empty.'),
    '#options' => $fields,
    '#default_value' => $this->options['outputfield'],
  );
  $form['reverse'] = array(
    '#type' => 'checkbox',
    '#title' => $this
      ->t('Reverse'),
    '#description' => $this
      ->t('Reverse the normal behavior. Show the output field if the other field is <em>not</em> empty. If the other field is empty, output nothing.'),
    '#default_value' => $this->options['reverse'],
  );
}