WysiwygEditor.php

<?php

namespace Drupal\quickedit_test\Plugin\InPlaceEditor;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\quickedit\Plugin\InPlaceEditorBase;

/**
 * Defines the 'wysiwyg' in-place editor.
 *
 * @InPlaceEditor(
 *   id = "wysiwyg",
 * )
 */
class WysiwygEditor extends InPlaceEditorBase {
    
    /**
     * {@inheritdoc}
     */
    public function isCompatible(FieldItemListInterface $items) {
        $field_definition = $items->getFieldDefinition();
        // This editor is incompatible with multivalued fields.
        if ($field_definition->getFieldStorageDefinition()
            ->getCardinality() != 1) {
            return FALSE;
        }
        // This editor is compatible with formatted ("rich") text fields; but only
        // if there is a currently active text format and that text format is the
        // 'full_html' text format.
        return $items[0]->format === 'full_html';
    }
    
    /**
     * {@inheritdoc}
     */
    public function getMetadata(FieldItemListInterface $items) {
        $metadata['format'] = $items[0]->format;
        return $metadata;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getAttachments() {
        return [
            'library' => [
                'quickedit_test/not-existing-wysiwyg',
            ],
        ];
    }

}