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<?php
namespace Drupal\Core\Entity;
use Drupal\Core\Config\Entity\ConfigEntityInterface;
use Drupal\Core\Form\FormStateInterface;
/**
* Provides a generic base class for an entity deletion form.
*
* @ingroup entity_api
*/
class EntityDeleteForm extends EntityConfirmFormBase {
use EntityDeleteFormTrait;
/**
* {@inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state) {
$form = parent::buildForm($form, $form_state);
$entity = $this->getEntity();
// Only do dependency processing for configuration entities. Whilst it is
// possible for a configuration entity to be dependent on a content entity,
// these dependencies are soft and content delete permissions are often
// given to more users. This method should not make assumptions that $entity
// is a configuration entity in case we decide to remove the following
// condition.
if (!($entity instanceof ConfigEntityInterface)) {
return $form;
}
$this->addDependencyListsToForm($form, $entity->getConfigDependencyKey(), $this->getConfigNamesToDelete($entity), $this->getConfigManager(), $this->entityManager);
return $form;
}
/**
* Gets the configuration manager.
*
* @return \Drupal\Core\Config\ConfigManager
* The configuration manager.
*/
protected function getConfigManager() {
return \Drupal::service('config.manager');
}
/**
* Returns config names to delete for the deletion confirmation form.
*
* @param \Drupal\Core\Config\Entity\ConfigEntityInterface $entity
* The entity being deleted.
*
* @return string[]
* A list of configuration names that will be deleted by this form.
*/
protected function getConfigNamesToDelete(ConfigEntityInterface $entity) {
return [$entity->getConfigDependencyName()];
}
}