DrupalImageCaption.php

<?php

namespace Drupal\ckeditor\Plugin\CKEditorPlugin;

use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Plugin\PluginBase;
use Drupal\editor\Entity\Editor;
use Drupal\ckeditor\CKEditorPluginInterface;
use Drupal\ckeditor\CKEditorPluginContextualInterface;
use Drupal\ckeditor\CKEditorPluginCssInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Defines the "drupalimagecaption" plugin.
 *
 * @CKEditorPlugin(
 *   id = "drupalimagecaption",
 *   label = @Translation("Drupal image caption widget"),
 *   module = "ckeditor"
 * )
 */
class DrupalImageCaption extends PluginBase implements CKEditorPluginInterface, CKEditorPluginContextualInterface, CKEditorPluginCssInterface, ContainerFactoryPluginInterface {
    
    /**
     * The module extension list.
     *
     * @var \Drupal\Core\Extension\ModuleExtensionList
     */
    protected $moduleList;
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        $instance = new static($configuration, $plugin_id, $plugin_definition);
        $instance->moduleList = $container->get('extension.list.module');
        return $instance;
    }
    
    /**
     * {@inheritdoc}
     */
    public function isInternal() {
        return FALSE;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDependencies(Editor $editor) {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getLibraries(Editor $editor) {
        return [
            'ckeditor/drupal.ckeditor.plugins.drupalimagecaption',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFile() {
        return $this->moduleList
            ->getPath('ckeditor') . '/js/plugins/drupalimagecaption/plugin.js';
    }
    
    /**
     * {@inheritdoc}
     */
    public function getConfig(Editor $editor) {
        $format = $editor->getFilterFormat();
        return [
            'image2_captionedClass' => 'caption caption-img',
            'image2_alignClasses' => [
                'align-left',
                'align-center',
                'align-right',
            ],
            'drupalImageCaption_captionPlaceholderText' => $this->t('Enter caption here'),
            // Only enable those parts of DrupalImageCaption for which the
            // corresponding Drupal text filters are enabled.
'drupalImageCaption_captionFilterEnabled' => $format->filters('filter_caption')->status,
            'drupalImageCaption_alignFilterEnabled' => $format->filters('filter_align')->status,
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCssFiles(Editor $editor) {
        return [
            $this->moduleList
                ->getPath('ckeditor') . '/css/plugins/drupalimagecaption/ckeditor.drupalimagecaption.css',
        ];
    }
    
    /**
     * {@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 filter_align or filter_caption filter and the
        // DrupalImage button is enabled.
        $format = $editor->getFilterFormat();
        if ($format->filters('filter_align')->status || $format->filters('filter_caption')->status) {
            $enabled = FALSE;
            $settings = $editor->getSettings();
            foreach ($settings['toolbar']['rows'] as $row) {
                foreach ($row as $group) {
                    foreach ($group['items'] as $button) {
                        if ($button === 'DrupalImage') {
                            $enabled = TRUE;
                        }
                    }
                }
            }
            return $enabled;
        }
        return FALSE;
    }

}