--- /dev/null
+<?php
+
+namespace Drupal\system\Form;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+/**
+ * Provides a form removing module content entities data before uninstallation.
+ */
+class PrepareModulesEntityUninstallForm extends ConfirmFormBase {
+
+ /**
+ * The entity type ID of the entities to delete.
+ *
+ * @var string
+ */
+ protected $entityTypeId;
+
+ /**
+ * The entity type manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * Constructs a PrepareModulesEntityUninstallForm object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity type manager.
+ */
+ public function __construct(EntityTypeManagerInterface $entity_type_manager) {
+ $this->entityTypeManager = $entity_type_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('entity_type.manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'system_prepare_modules_entity_uninstall';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getQuestion() {
+ $entity_type = $this->entityTypeManager->getDefinition($this->entityTypeId);
+
+ return $this->t('Are you sure you want to delete all @entity_type_plural?', ['@entity_type_plural' => $entity_type->getPluralLabel()]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDescription() {
+ return $this->t('This action cannot be undone.<br />Make a backup of your database if you want to be able to restore these items.');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getConfirmText() {
+ $entity_type = $this->entityTypeManager->getDefinition($this->entityTypeId);
+
+ return $this->t('Delete all @entity_type_plural', ['@entity_type_plural' => $entity_type->getPluralLabel()]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCancelUrl() {
+ return Url::fromRoute('system.modules_uninstall');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state, $entity_type_id = NULL) {
+ $this->entityTypeId = $entity_type_id;
+ if (!$this->entityTypeManager->hasDefinition($this->entityTypeId)) {
+ throw new NotFoundHttpException();
+ }
+ $form = parent::buildForm($form, $form_state);
+
+ $storage = $this->entityTypeManager->getStorage($entity_type_id);
+ $count = $storage->getQuery()->count()->execute();
+
+ $form['entity_type_id'] = [
+ '#type' => 'value',
+ '#value' => $entity_type_id,
+ ];
+
+ // Display a list of the 10 entity labels, if possible.
+ $entity_type = $this->entityTypeManager->getDefinition($entity_type_id);
+ if ($count == 0) {
+ $form['total'] = [
+ '#markup' => $this->t(
+ 'There are 0 @entity_type_plural to delete.',
+ ['@entity_type_plural' => $entity_type->getPluralLabel()]
+ ),
+ ];
+ }
+ elseif ($entity_type->hasKey('label')) {
+ $recent_entity_ids = $storage->getQuery()
+ ->sort($entity_type->getKey('id'), 'DESC')
+ ->pager(10)
+ ->execute();
+ $recent_entities = $storage->loadMultiple($recent_entity_ids);
+
+ $labels = [];
+ foreach ($recent_entities as $entity) {
+ $labels[] = $entity->label();
+ }
+
+ if ($labels) {
+ $form['recent_entity_labels'] = [
+ '#theme' => 'item_list',
+ '#items' => $labels,
+ ];
+ $more_count = $count - count($labels);
+ $form['total'] = [
+ '#markup' => $this->formatPlural(
+ $more_count,
+ 'And <strong>@count</strong> more @entity_type_singular.',
+ 'And <strong>@count</strong> more @entity_type_plural.',
+ [
+ '@entity_type_singular' => $entity_type->getSingularLabel(),
+ '@entity_type_plural' => $entity_type->getPluralLabel(),
+ ]
+ ),
+ '#access' => (bool) $more_count,
+ ];
+ }
+ }
+ else {
+ $form['total'] = [
+ '#markup' => $this->formatPlural(
+ $count,
+ 'This will delete <strong>@count</strong> @entity_type_singular.',
+ 'This will delete <strong>@count</strong> @entity_type_plural.',
+ [
+ '@entity_type_singular' => $entity_type->getSingularLabel(),
+ '@entity_type_plural' => $entity_type->getPluralLabel(),
+ ]
+ )
+ ];
+ }
+
+ $form['description']['#prefix'] = '<p>';
+ $form['description']['#suffix'] = '</p>';
+ $form['description']['#weight'] = 5;
+
+ // Only show the delete button if there are entities to delete.
+ $form['actions']['submit']['#access'] = (bool) $count;
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $entity_type_id = $form_state->getValue('entity_type_id');
+
+ $entity_type_plural = $this->entityTypeManager->getDefinition($entity_type_id)->getPluralLabel();
+ $batch = [
+ 'title' => t('Deleting @entity_type_plural', [
+ '@entity_type_plural' => $entity_type_plural,
+ ]),
+ 'operations' => [
+ [
+ [__CLASS__, 'deleteContentEntities'], [$entity_type_id],
+ ],
+ ],
+ 'finished' => [__CLASS__, 'moduleBatchFinished'],
+ 'progress_message' => '',
+ ];
+ batch_set($batch);
+ }
+
+ /**
+ * Deletes the content entities of the specified entity type.
+ *
+ * @param string $entity_type_id
+ * The entity type ID from which data will be deleted.
+ * @param array|\ArrayAccess $context
+ * The batch context array, passed by reference.
+ *
+ * @internal
+ * This batch callback is only meant to be used by this form.
+ */
+ public static function deleteContentEntities($entity_type_id, &$context) {
+ $storage = \Drupal::entityTypeManager()->getStorage($entity_type_id);
+
+ // Set the entity type ID in the results array so we can access it in the
+ // batch finished callback.
+ $context['results']['entity_type_id'] = $entity_type_id;
+
+ if (!isset($context['sandbox']['progress'])) {
+ $context['sandbox']['progress'] = 0;
+ $context['sandbox']['max'] = $storage->getQuery()->count()->execute();
+ }
+
+ $entity_type = \Drupal::entityTypeManager()->getDefinition($entity_type_id);
+ $entity_ids = $storage->getQuery()
+ ->sort($entity_type->getKey('id'), 'ASC')
+ ->range(0, 10)
+ ->execute();
+ if ($entities = $storage->loadMultiple($entity_ids)) {
+ $storage->delete($entities);
+ }
+ // Sometimes deletes cause secondary deletes. For example, deleting a
+ // taxonomy term can cause it's children to be be deleted too.
+ $context['sandbox']['progress'] = $context['sandbox']['max'] - $storage->getQuery()->count()->execute();
+
+ // Inform the batch engine that we are not finished and provide an
+ // estimation of the completion level we reached.
+ if (count($entity_ids) > 0 && $context['sandbox']['progress'] != $context['sandbox']['max']) {
+ $context['finished'] = $context['sandbox']['progress'] / $context['sandbox']['max'];
+ $context['message'] = t('Deleting items... Completed @percentage% (@current of @total).', ['@percentage' => round(100 * $context['sandbox']['progress'] / $context['sandbox']['max']), '@current' => $context['sandbox']['progress'], '@total' => $context['sandbox']['max']]);
+
+ }
+ else {
+ $context['finished'] = 1;
+ }
+ }
+
+ /**
+ * Implements callback_batch_finished().
+ *
+ * Finishes the module batch, redirect to the uninstall page and output the
+ * successful data deletion message.
+ */
+ public static function moduleBatchFinished($success, $results, $operations) {
+ $entity_type_plural = \Drupal::entityTypeManager()->getDefinition($results['entity_type_id'])->getPluralLabel();
+ drupal_set_message(t('All @entity_type_plural have been deleted.', ['@entity_type_plural' => $entity_type_plural]));
+
+ return new RedirectResponse(Url::fromRoute('system.modules_uninstall')->setAbsolute()->toString());
+ }
+
+}
projects / yaffs-website / blobdiff