public function ImageDeltaFormatter::settingsForm in Image Delta Formatter 8

Returns a form to configure settings for the formatter.

Invoked from \Drupal\field_ui\Form\EntityDisplayFormBase to allow administrators to configure the formatter. The field_ui module takes care of handling submitted form values.

Parameters

array $form: The form where the settings form is being included in.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

array The form elements for the formatter settings.

Overrides ImageFormatter::settingsForm

File

src/Plugin/Field/FieldFormatter/ImageDeltaFormatter.php, line 36

Class

ImageDeltaFormatter

Plugin implementation of the 'image_delta_formatter' formatter.

Namespace

Drupal\image_delta_formatter\Plugin\Field\FieldFormatter

Code

public function settingsForm(array $form, FormStateInterface $form_state) {
  $element = parent::settingsForm($form, $form_state);
  $element['deltas'] = [
    '#type' => 'textfield',
    '#title' => $this
      ->t('Delta'),
    '#description' => $this
      ->t('Enter a delta, or a comma-separated list of deltas that should be shown. For example: 0, 1, 4.'),
    '#size' => 10,
    '#default_value' => $this
      ->getSetting('deltas'),
    '#required' => TRUE,
    '#weight' => -20,
  ];
  $element['deltas_reversed'] = [
    '#title' => $this
      ->t('Reversed'),
    '#type' => 'checkbox',
    '#default_value' => $this
      ->getSetting('deltas_reversed'),
    '#description' => $this
      ->t('Start from the last values.'),
    '#weight' => -10,
  ];
  return $element;
}