LlamaCss.php

<?php

namespace Drupal\ckeditor_test\Plugin\CKEditorPlugin;

use Drupal\ckeditor\CKEditorPluginButtonsInterface;
use Drupal\ckeditor\CKEditorPluginCssInterface;
use Drupal\editor\Entity\Editor;

/**
 * Defines a "LlamaCss" plugin, with an associated "llama" CSS.
 *
 * @CKEditorPlugin(
 *   id = "llama_css",
 *   label = @Translation("Llama CSS")
 * )
 */
class LlamaCss extends Llama implements CKEditorPluginButtonsInterface, CKEditorPluginCssInterface {
    
    /**
     * {@inheritdoc}
     */
    public function getButtons() {
        return [
            'LlamaCSS' => [
                'label' => t('Insert Llama CSS'),
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCssFiles(Editor $editor) {
        return [
            drupal_get_path('module', 'ckeditor_test') . '/css/llama.css',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFile() {
        return drupal_get_path('module', 'ckeditor_test') . '/js/llama_css.js';
    }

}