eu_cookie_compliance_rocketship-1.0.x-dev/src/Plugin/Field/FieldFormatter/CookieBlockedIframeOnly.php

<?php

namespace Drupal\eu_cookie_compliance_rocketship\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\iframe\Plugin\Field\FieldFormatter\IframeOnlyFormatter;

class CookieBlockedIframeOnly extends IframeOnlyFormatter {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      'whitelist_hostnames' => '',
    ] + parent::defaultSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $form = parent::settingsForm($form, $form_state);

    $form['whitelist_hostnames'] = [
      '#type' => 'textarea',
      '#title' => $this->t('Whitelist hostnames'),
      '#description' => $this->t('Specify domains to be skipped from cookie_content_blocker. One hostname per line'),
      '#default_value' => $this->getSetting('whitelist_hostnames'),
      '#required' => FALSE,
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = [];
    $whitelist_hostnames = $this->getSetting('whitelist_hostnames');
    if (!empty($whitelist_hostnames)) {
      $summary[] = $this->t('Whitelist hostnames @hostnames', ['@hostnames' => str_replace("\n", ', ', $whitelist_hostnames)]);
    }

    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {

    // Let parent formatter do it's magic.
    $elements = parent::viewElements($items, $langcode);
    $whitelist_hostnames = explode("\n", $this->getSetting('whitelist_hostnames'));
    // Attach Cookie Content Blocker's pre_render.
    foreach ($items as $delta => $item) {
      // Don
      if (!empty($whitelist_hostnames) && in_array(parse_url($elements[$delta]['#src'], PHP_URL_HOST), $whitelist_hostnames)) {
        continue;
      }
      $element[$delta]['#pre_render'] = $element[$delta]['#pre_render'] ?? [];
      $elements[$delta]['#pre_render'][] = 'cookie_content_blocker.element.processor:processElement';
      // TODO: extend formatter settings with CCB options (like button_text) and set them here.
      //   $defaults = [
      //     'blocked_message' => $config->get('blocked_message'),
      //     'show_button' => $config->get('show_button'),
      //     'button_text' => $config->get('button_text'),
      //     'enable_click' => $config->get('enable_click_consent_change'),
      //     'show_placeholder' => TRUE,
      //     'preview' => [],
      //   ];
      $elements[$delta]['#cookie_content_blocker'] = $elements[$delta]['#cookie_content_blocker'] ?? TRUE;
    }

    return $elements;
  }

}