ex_icons-8.x-1.0/tests/modules/ex_icons_test/src/Form/ExIconsTestIconSelectionForm.php

<?php

namespace Drupal\ex_icons_test\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\HttpFoundation\JsonResponse;

/**
 * Form constructor to test ex_icon_select form element.
 *
 * @internal
 */
class ExIconsTestIconSelectionForm extends FormBase {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'ex_icons_test_icon_selection';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $form['selection'] = [
      '#type' => 'ex_icon_select',
      '#title' => 'Selection',
    ];

    $form['submit'] = [
      '#type' => 'submit',
      '#value' => 'Submit',
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $form_state->setResponse(new JsonResponse($form_state->getValues()));
  }

}