EditorManager.php

<?php

namespace Drupal\editor\Plugin;

use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Plugin\DefaultPluginManager;
use Drupal\Core\Cache\CacheBackendInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\editor\Attribute\Editor;

/**
 * Configurable text editor manager.
 *
 * @see \Drupal\editor\Annotation\Editor
 * @see \Drupal\editor\Plugin\EditorPluginInterface
 * @see \Drupal\editor\Plugin\EditorBase
 * @see plugin_api
 */
class EditorManager extends DefaultPluginManager {
    
    /**
     * Static cache of attachments.
     *
     * @var array
     */
    protected array $attachments = [
        'library' => [],
    ];
    
    /**
     * Editors.
     *
     * @var array
     */
    protected array $editors = [];
    public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler, ?EntityTypeManagerInterface $entityTypeManager = NULL) {
        parent::__construct('Plugin/Editor', $namespaces, $module_handler, EditorPluginInterface::class, Editor::class, 'Drupal\\editor\\Annotation\\Editor');
        $this->alterInfo('editor_info');
        $this->setCacheBackend($cache_backend, 'editor_plugins');
        if ($this->entityTypeManager === NULL) {
            @trigger_error('Calling ' . __METHOD__ . '() without the $entityTypeManager argument is deprecated in drupal:11.2.0 and will be required in drupal:12.0.0. See https://www.drupal.org/project/drupal/issues/3447794', E_USER_DEPRECATED);
            $this->entityTypeManager = \Drupal::entityTypeManager();
        }
    }
    
    /**
     * Populates a key-value pair of available text editors.
     *
     * @return array
     *   An array of translated text editor labels, keyed by ID.
     */
    public function listOptions() {
        $options = [];
        foreach ($this->getDefinitions() as $key => $definition) {
            $options[$key] = $definition['label'];
        }
        return $options;
    }
    
    /**
     * Retrieves text editor libraries and JavaScript settings.
     *
     * @param array $format_ids
     *   An array of format IDs as returned by array_keys(filter_formats()).
     *
     * @return array
     *   An array of attachments, for use with #attached.
     *
     * @see \Drupal\Core\Render\AttachmentsResponseProcessorInterface::processAttachments()
     */
    public function getAttachments(array $format_ids) {
        $settings = $this->attachments['drupalSettings'] ?? [];
        if ($editor_ids_to_load = array_diff($format_ids, array_keys($this->editors))) {
            $editors = $this->entityTypeManager
                ->getStorage('editor')
                ->loadMultiple($editor_ids_to_load);
            // Statically cache the editors and include NULL entries for formats that
            // do not have editors.
            $this->editors += $editors + array_fill_keys($editor_ids_to_load, NULL);
            foreach ($editors as $format_id => $editor) {
                $plugin = $this->createInstance($editor->getEditor());
                $plugin_definition = $plugin->getPluginDefinition();
                // Libraries.
                $this->attachments['library'] = array_merge($this->attachments['library'], $plugin->getLibraries($editor));
                // Format-specific JavaScript settings.
                $settings['editor']['formats'][$format_id] = [
                    'format' => $format_id,
                    'editor' => $editor->getEditor(),
                    'editorSettings' => $plugin->getJSSettings($editor),
                    'editorSupportsContentFiltering' => $plugin_definition['supports_content_filtering'],
                    'isXssSafe' => $plugin_definition['is_xss_safe'],
                ];
            }
        }
        // Allow other modules to alter all JavaScript settings.
        $this->moduleHandler
            ->alter('editor_js_settings', $settings);
        if (empty($this->attachments['library']) && empty($settings)) {
            return [];
        }
        $this->attachments['drupalSettings'] = $settings;
        return $this->attachments;
    }

}