LlamaContextualAndButton.php

<?php

namespace Drupal\ckeditor_test\Plugin\CKEditorPlugin;

use Drupal\ckeditor\CKEditorPluginButtonsInterface;
use Drupal\ckeditor\CKEditorPluginContextualInterface;
use Drupal\ckeditor\CKEditorPluginConfigurableInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\editor\Entity\Editor;

/**
 * Defines a "LlamaContextualAndButton" plugin, with a contextually OR toolbar
 * builder-enabled "llama" feature.
 *
 * @CKEditorPlugin(
 *   id = "llama_contextual_and_button",
 *   label = @Translation("Contextual Llama With Button")
 * )
 */
class LlamaContextualAndButton extends Llama implements CKEditorPluginContextualInterface, CKEditorPluginButtonsInterface, CKEditorPluginConfigurableInterface {
    
    /**
     * {@inheritdoc}
     */
    public function isEnabled(Editor $editor) {
        // Automatically enable this plugin if the Strike button is enabled.
        $settings = $editor->getSettings();
        foreach ($settings['toolbar']['rows'] as $row) {
            foreach ($row as $group) {
                if (in_array('Strike', $group['items'])) {
                    return TRUE;
                }
            }
        }
        return FALSE;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getButtons() {
        return [
            'Llama' => [
                'label' => t('Insert Llama'),
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFile() {
        return drupal_get_path('module', 'ckeditor_test') . '/js/llama_contextual_and_button.js';
    }
    
    /**
     * {@inheritdoc}
     */
    public function settingsForm(array $form, FormStateInterface $form_state, Editor $editor) {
        // Defaults.
        $config = [
            'ultra_llama_mode' => FALSE,
        ];
        $settings = $editor->getSettings();
        if (isset($settings['plugins']['llama_contextual_and_button'])) {
            $config = $settings['plugins']['llama_contextual_and_button'];
        }
        $form['ultra_llama_mode'] = [
            '#title' => t('Ultra llama mode'),
            '#type' => 'checkbox',
            '#default_value' => $config['ultra_llama_mode'],
        ];
        return $form;
    }

}