/**
* Builds the "contentsCss" configuration part of the CKEditor JS settings.
*
* @see getJSSettings()
*
* @param \Drupal\editor\Entity\Editor $editor
* A configured text editor object.
* @return array
* An array containing the "contentsCss" configuration.
*/
public function buildContentsCssJSSetting(Editor $editor)
{
$css = array(drupal_get_path('module', 'ckeditor') . '/css/ckeditor-iframe.css', drupal_get_path('module', 'system') . '/css/components/align.module.css');
$this->moduleHandler->alter('ckeditor_css', $css, $editor);
// Get a list of all enabled plugins' iframe instance CSS files.
$plugins_css = array_reduce($this->ckeditorPluginManager->getCssFiles($editor), function ($result, $item) {
return array_merge($result, array_values($item));
}, array());
$css = array_merge($css, $plugins_css);
$css = array_merge($css, _ckeditor_theme_css());
$css = array_map('file_create_url', $css);
$css = array_map('file_url_transform_relative', $css);
return array_values($css);
}
