wxt-8.x-3.011/modules/custom/wxt_ext/wxt_ext_media_twitter/wxt_ext_media_twitter.module

<?php

/**
 * @file
 * Support for tweets as media entities in WxT Extend.
 */

use Drupal\wxt_core\OverrideHelper as Override;
use Drupal\wxt_ext_media\Form\AddByUrlForm;
use Drupal\wxt_ext_media_twitter\Plugin\media\Source\Twitter;

/**
 * Implements hook_media_source_info_alter().
 */
function wxt_ext_media_twitter_media_source_info_alter(array &$sources) {
  $sources['twitter']['input_match'] = [
    'constraint' => 'TweetEmbedCode',
    'field_types' => [
      'string',
      'string_long',
    ],
  ];
  $sources['twitter']['preview'] = TRUE;
  $sources['twitter']['forms']['media_library_add'] = AddByUrlForm::class;

  Override::pluginClass($sources['twitter'], Twitter::class);
}

/**
 * Implements hook_theme_registry_alter().
 */
function wxt_ext_media_twitter_theme_registry_alter(array &$theme_registry) {
  /** @var \Drupal\Core\Extension\ModuleExtensionList $module_list */
  $module_list = Drupal::service('extension.list.module');

  $hook = &$theme_registry['media_entity_twitter_tweet'];
  if ($hook['path'] === $module_list->getPath('media_entity_twitter') . '/templates') {
    $hook['path'] = $module_list->getPath('wxt_ext_media_twitter') . '/templates';
  }
}

/**
 * Implements hook_preprocess_media_entity_twitter_tweet().
 */
function wxt_ext_media_twitter_preprocess_media_entity_twitter_tweet(array &$variables) {
  if (isset($variables['placeholder'])) {
    return;
  }

  // Add a placeholder image so that's easy to see where tweets are embedded in
  // CKEditor.
  $placeholder = [
    '#theme' => 'image',
    '#uri' => Drupal::service('extension.list.module')->getPath('media_entity_twitter') . '/images/icons/twitter.png',
    '#width' => 180,
    '#height' => 180,
    // This is a placeholder, so no need for an alt text.
    '#alt' => NULL,
  ];
  $variables['placeholder'] = Drupal::service('renderer')->renderPlain($placeholder);
}