geysir-8.x-1.2/src/Form/GeysirParagraphDeleteForm.php

<?php

namespace Drupal\geysir\Form;

use Drupal\Core\Entity\ContentEntityDeleteForm;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;

/**
 * Functionality to delete a paragraph.
 */
class GeysirParagraphDeleteForm extends ContentEntityDeleteForm {
  use GeysirFormEntityRevisionTrait;

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    $route_match = $this->getRouteMatch();
    $parent_entity_type = $route_match->getParameter('parent_entity_type');
    $parent_entity_revision = $route_match->getParameter('parent_entity_revision');
    $field_name = $route_match->getParameter('field');
    $delta = $route_match->getParameter('delta');

    // Get the parent revision if available, otherwise the parent.
    $parent_entity_revision = $this->getParentRevisionOrParent($parent_entity_type, $parent_entity_revision);

    $field = $parent_entity_revision->get($field_name);
    $field_definition = $field->getFieldDefinition();
    $field_label = $field_definition->getLabel();

    return $this->t('Are you sure you want to delete #@delta of @field of %label?', [
      '@delta' => $delta,
      '@field' => $field_label,
      '%label' => $parent_entity_revision->label(),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $route_match = $this->getRouteMatch();
    $parent_entity_type = $route_match->getParameter('parent_entity_type');
    $parent_entity_revision = $route_match->getParameter('parent_entity_revision');
    $field_name = $route_match->getParameter('field');
    $delta = $route_match->getParameter('delta');

    // Get the parent revision if available, otherwise the parent.
    $parent_entity_revision = $this->getParentRevisionOrParent($parent_entity_type, $parent_entity_revision);

    $parent_entity_revision->get($field_name)->removeItem($delta);

    $this->saveParentEntityRevision($parent_entity_revision, $this->time, $this->currentUser());

    // Use the parent revision id if available, otherwise the parent id.
    $parent_revision_id = ($parent_entity_revision->getRevisionId()) ? $parent_entity_revision->getRevisionId() : $parent_entity_revision->id();
    $form_state->setTemporary(['parent_entity_revision' => $parent_revision_id]);

    $form_state->setRedirectUrl($this->getRedirectUrl());
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return $this->getRedirectUrl();
  }

  /**
   * {@inheritdoc}
   */
  protected function getRedirectUrl() {
    $referer = $this->getRequest()->server->get('HTTP_REFERER');
    $path = parse_url($referer, PHP_URL_PATH);
    return Url::fromUserInput($path);
  }

  /**
   * @param $parent_entity_type
   * @param $parent_entity_revision
   *
   * @return \Drupal\Core\Entity\EntityInterface|null
   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  protected function getParentRevisionOrParent($parent_entity_type, $parent_entity_revision) {
    $entity_storage = $this->entityTypeManager->getStorage($parent_entity_type);
    if ($this->entityTypeManager->getDefinition($parent_entity_type)->isRevisionable()) {
      return $entity_storage->loadRevision($parent_entity_revision);
    }
    else {
      return $entity_storage->load($parent_entity_revision);
    }
  }

}