widen_media-1.0.x-dev/src/Form/AddWidenMediaForm.php

<?php

namespace Drupal\widen_media\Form;

use Drupal\Core\Form\FormBuilderInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\media_library\Form\AddFormBase;
use Drupal\widen_media\WidenAssetException;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Creates a form to create media entities from Widen media URLs.
 *
 * @internal
 *   Form classes are internal.
 */
class AddWidenMediaForm extends AddFormBase {

  /**
   * WidenAPI Service.
   *
   * @var \Drupal\widen_media\Service\Widen
   */
  protected $widenApi;

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    $instance = new static(
      $container->get('entity_type.manager'),
      $container->get('media_library.ui_builder'),
      $container->get('media_library.opener_resolver')
    );

    $instance->widenApi = $container->get('widen_media.api');

    return $instance;
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return $this->getBaseFormId() . '_widen';
  }

  /**
   * {@inheritdoc}
   */
  protected function buildInputElement(array $form, FormStateInterface $form_state) {

    // Add a container to group the input elements for styling purposes.
    $form['container'] = [
      '#type' => 'container',
      '#attributes' => [
        'class' => ['media-library-add-form__input-wrapper'],
      ],
    ];

    $form['container']['url'] = [
      '#type' => 'url',
      '#title' => $this->t('Add Widen Media via URL'),
      '#required' => TRUE,
      '#attributes' => [
        'placeholder' => 'https://',
      ],
    ];

    $form['container']['submit'] = [
      '#type' => 'submit',
      '#value' => $this->t('Add'),
      '#button_type' => 'primary',
      '#validate' => ['::validateUrl'],
      '#submit' => ['::addButtonSubmit'],
      '#ajax' => [
        'callback' => '::updateFormCallback',
        'wrapper' => 'media-library-wrapper',
        'url' => Url::fromRoute('media_library.ui'),
        'options' => [
          'query' => $this->getMediaLibraryState($form_state)->all() + [
            FormBuilderInterface::AJAX_FORM_REQUEST => TRUE,
          ],
        ],
      ],
    ];

    return $form;
  }

  /**
   * Validates the Widen Media URL.
   *
   * @param array $form
   *   The complete form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current form state.
   */
  public function validateUrl(array &$form, FormStateInterface $form_state) {
    $url = $form_state->getValue('url');
    if ($url) {
      try {
        $this->widenApi->getAsset($url);
      }
      catch (WidenAssetException $e) {
        $form_state->setErrorByName('url', $e->getMessage());
      }
    }
  }

  /**
   * Submit handler for the add button.
   *
   * @param array $form
   *   The form render array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   */
  public function addButtonSubmit(array $form, FormStateInterface $form_state) {
    $this->processInputValues([$form_state->getValue('url')], $form, $form_state);
  }

}