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<?php
namespace Drupal\Core\Entity;
/**
* Class BundleEntityFormBase is a base form for bundle config entities.
*/
class BundleEntityFormBase extends EntityForm {
/**
* Protects the bundle entity's ID property's form element against changes.
*
* This method is assumed to be called on a completely built entity form,
* including a form element for the bundle config entity's ID property.
*
* @param array $form
* The completely built entity bundle form array.
*
* @return array
* The updated entity bundle form array.
*/
protected function protectBundleIdElement(array $form) {
$entity = $this->getEntity();
$id_key = $entity->getEntityType()->getKey('id');
assert('isset($form[$id_key])');
$element = &$form[$id_key];
// Make sure the element is not accidentally re-enabled if it has already
// been disabled.
if (empty($element['#disabled'])) {
$element['#disabled'] = !$entity->isNew();
}
return $form;
}
}