class DrupalMedia

class DrupalMedia extends PluginBase implements ContainerFactoryPluginInterface, CKEditorPluginContextualInterface, CKEditorPluginCssInterface {
    
    /**
     * The module extension list.
     *
     * @var \Drupal\Core\Extension\ModuleExtensionList
     */
    protected $moduleExtensionList;
    
    /**
     * Constructs a new DrupalMedia plugin object.
     *
     * @param array $configuration
     *   A configuration array containing information about the plugin instance.
     * @param string $plugin_id
     *   The plugin_id for the plugin instance.
     * @param array $plugin_definition
     *   The plugin implementation definition.
     * @param \Drupal\Core\Extension\ModuleExtensionList $extension_list_module
     *   The module extension list.
     */
    public function __construct(array $configuration, $plugin_id, $plugin_definition, ModuleExtensionList $extension_list_module) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->moduleExtensionList = $extension_list_module;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('extension.list.module'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function isInternal() {
        return FALSE;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDependencies(Editor $editor) {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getLibraries(Editor $editor) {
        return [
            'core/jquery',
            'core/drupal',
            'core/drupal.ajax',
            // @see Drupal.theme.mediaEmbedPreviewError()
'media/media_embed_ckeditor_theme',
            // @see Drupal.theme.mediaEmbedEditButton()
'ckeditor/drupal.ckeditor.plugins.drupalmedia',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFile() {
        return $this->moduleExtensionList
            ->getPath('ckeditor') . '/js/plugins/drupalmedia/plugin.js';
    }
    
    /**
     * {@inheritdoc}
     */
    public function getConfig(Editor $editor) {
        return [
            'drupalMedia_previewCsrfToken' => \Drupal::csrfToken()->get('X-Drupal-MediaPreview-CSRF-Token'),
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function isEnabled(Editor $editor) {
        if (!$editor->hasAssociatedFilterFormat()) {
            return FALSE;
        }
        // Automatically enable this plugin if the text format associated with this
        // text editor uses the media_embed filter.
        $filters = $editor->getFilterFormat()
            ->filters();
        return $filters->has('media_embed') && $filters->get('media_embed')->status;
    }
    
    /**
     * {@inheritdoc}
     *
     * @todo Improve this in https://www.drupal.org/project/drupal/issues/3072063
     */
    public function getCssFiles(Editor $editor) {
        return [
            $this->moduleExtensionList
                ->getPath('ckeditor') . '/css/plugins/drupalmedia/ckeditor.drupalmedia.css',
            $this->moduleExtensionList
                ->getPath('system') . '/css/components/hidden.module.css',
        ];
    }

}