<?php

namespace Drupal\image_module_test\Plugin\Field\FieldWidget;

use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Field\Attribute\FieldWidget;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;

/**
 * Default widget for Dummy AJAX test.
 */
#[FieldWidget(
  id: 'image_module_test_dummy_ajax_widget',
  label: new TranslatableMarkup('Dummy AJAX widget'),
  field_types: ['image_module_test_dummy_ajax'],
  multiple_values: TRUE,
)]
class DummyAjaxWidget extends WidgetBase {

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
    $element['select_widget'] = [
      '#type' => 'select',
      '#title' => $this->t('Dummy select'),
      '#options' => ['pow' => 'Pow!', 'bam' => 'Bam!'],
      '#required' => TRUE,
      '#ajax' => [
        'callback' => static::class . '::dummyAjaxCallback',
        'effect' => 'fade',
      ],
    ];

    return $element;
  }

  /**
   * Ajax callback for Dummy AJAX test.
   *
   * @param array $form
   *   The build form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   *
   * @return \Drupal\Core\Ajax\AjaxResponse
   *   Ajax response.
   */
  public static function dummyAjaxCallback(array &$form, FormStateInterface $form_state) {
    return new AjaxResponse();
  }

}
