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EntityFormWizardBase.php in Chaos Tool Suite (ctools) 8.3

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src/Wizard/EntityFormWizardBase.php
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<?php

namespace Drupal\ctools\Wizard;

use Drupal\Core\DependencyInjection\ClassResolverInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Form\FormBuilderInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\ctools\Event\WizardEvent;
use Drupal\Core\TempStore\SharedTempStoreFactory;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;

/**
 * The base class for all entity form wizards.
 */
abstract class EntityFormWizardBase extends FormWizardBase implements EntityFormWizardInterface {

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * @param \Drupal\Core\TempStore\SharedTempStoreFactory $tempstore
   *   Tempstore Factory for keeping track of values in each step of the
   *   wizard.
   * @param \Drupal\Core\Form\FormBuilderInterface $builder
   *   The Form Builder.
   * @param \Drupal\Core\DependencyInjection\ClassResolverInterface $class_resolver
   *   The class resolver.
   * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
   *   The event dispatcher.
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param $tempstore_id
   *   The shared temp store factory collection name.
   * @param null $machine_name
   *   The SharedTempStore key for our current wizard values.
   * @param null $step
   *   The current active step of the wizard.
   */
  public function __construct(SharedTempStoreFactory $tempstore, FormBuilderInterface $builder, ClassResolverInterface $class_resolver, EventDispatcherInterface $event_dispatcher, EntityTypeManagerInterface $entity_type_manager, RouteMatchInterface $route_match, $tempstore_id, $machine_name = NULL, $step = NULL) {
    $this->entityTypeManager = $entity_type_manager;
    parent::__construct($tempstore, $builder, $class_resolver, $event_dispatcher, $route_match, $tempstore_id, $machine_name, $step);
  }

  /**
   * {@inheritdoc}
   */
  public static function getParameters() {
    $parameters = [
      'tempstore' => \Drupal::service('tempstore.shared'),
      'builder' => \Drupal::service('form_builder'),
      'class_resolver' => \Drupal::service('class_resolver'),
      'event_dispatcher' => \Drupal::service('event_dispatcher'),
      'entity_type_manager' => \Drupal::service('entity_type.manager'),
    ];

    // Keep the deprecated entity manager service as a parameter as well for
    // BC, so that subclasses still work.
    if (\Drupal::hasService('entity.manager')) {
      $parameters['entity_manager'] = \Drupal::service('entity.manager');
    }
    return $parameters;
  }

  /**
   * {@inheritdoc}
   */
  public function initValues() {
    $storage = $this->entityTypeManager
      ->getStorage($this
      ->getEntityType());
    if ($this
      ->getMachineName()) {
      $values = $this
        ->getTempstore()
        ->get($this
        ->getMachineName());
      if (!$values) {
        $entity = $storage
          ->load($this
          ->getMachineName());
        $values[$this
          ->getEntityType()] = $entity;
        $values['id'] = $entity
          ->id();
        $values['label'] = $entity
          ->label();
      }
    }
    else {
      $entity = $storage
        ->create([]);
      $values[$this
        ->getEntityType()] = $entity;
    }
    $event = new WizardEvent($this, $values);
    $this->dispatcher
      ->dispatch(FormWizardInterface::LOAD_VALUES, $event);
    return $event
      ->getValues();
  }

  /**
   * {@inheritdoc}
   */
  public function finish(array &$form, FormStateInterface $form_state) {
    $cached_values = $form_state
      ->getTemporaryValue('wizard');

    /** @var \Drupal\Core\Entity\EntityInterface $entity */
    $entity = $cached_values[$this
      ->getEntityType()];
    $entity
      ->set('id', $cached_values['id']);
    $entity
      ->set('label', $cached_values['label']);
    $status = $entity
      ->save();
    $arguments = [
      '@entity-type' => $entity
        ->getEntityType()
        ->getSingularLabel(),
      '%label' => $entity
        ->label(),
    ];
    if ($status === SAVED_UPDATED) {
      $this
        ->messenger()
        ->addMessage($this
        ->t('The @entity-type %label has been updated.', $arguments));
      $this
        ->logger($entity
        ->getEntityType()
        ->getProvider())
        ->notice('Updated @entity-type %label.', $arguments);
    }
    elseif ($status === SAVED_NEW) {
      $this
        ->messenger()
        ->addMessage($this
        ->t('The @entity-type %label has been added.', $arguments));
      $this
        ->logger($entity
        ->getEntityType()
        ->getProvider())
        ->notice('Added @entity-type %label.', $arguments);
    }
    $form_state
      ->setRedirectUrl($entity
      ->toUrl('collection'));
    parent::finish($form, $form_state);
  }

  /**
   * Helper function for generating label and id form elements.
   *
   * @param array $form
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *
   * @return array
   */
  protected function customizeForm(array $form, FormStateInterface $form_state) {
    $form = parent::customizeForm($form, $form_state);
    if ($this->machine_name) {
      $entity = $this->entityTypeManager
        ->getStorage($this
        ->getEntityType())
        ->load($this->machine_name);
    }
    else {
      $entity = NULL;
    }
    $cached_values = $form_state
      ->getTemporaryValue('wizard');

    // If the entity already exists, allow for non-linear step interaction.
    if ($entity) {

      // Setup the step rendering theme element.
      $prefix = [
        '#theme' => [
          'ctools_wizard_trail_links',
        ],
        '#wizard' => $this,
        '#cached_values' => $cached_values,
      ];
      $form['#prefix'] = \Drupal::service('renderer')
        ->render($prefix);
    }

    // Get the current form operation.
    $operation = $this
      ->getOperation($cached_values);
    $operations = $this
      ->getOperations($cached_values);
    $default_operation = reset($operations);
    if ($operation['form'] == $default_operation['form']) {

      // Get the plugin definition of this entity.
      $definition = $this->entityTypeManager
        ->getDefinition($this
        ->getEntityType());

      // Create id and label form elements.
      $form['name'] = [
        '#type' => 'fieldset',
        '#attributes' => [
          'class' => [
            'fieldset-no-legend',
          ],
        ],
        '#title' => $this
          ->getWizardLabel(),
      ];
      $form['name']['label'] = [
        '#type' => 'textfield',
        '#title' => $this
          ->getMachineLabel(),
        '#required' => TRUE,
        '#size' => 32,
        '#default_value' => !empty($cached_values['label']) ? $cached_values['label'] : '',
        '#maxlength' => 255,
        '#disabled' => !empty($cached_values['label']),
      ];
      $form['name']['id'] = [
        '#type' => 'machine_name',
        '#maxlength' => 128,
        '#machine_name' => [
          'source' => [
            'name',
            'label',
          ],
          'exists' => $this
            ->exists(),
        ],
        '#description' => $this
          ->t('A unique machine-readable name for this @entity_type. It must only contain lowercase letters, numbers, and underscores.', [
          '@entity_type' => $definition
            ->getLabel(),
        ]),
        '#default_value' => !empty($cached_values['id']) ? $cached_values['id'] : '',
        '#disabled' => !empty($cached_values['id']),
      ];
    }
    return $form;
  }

}

Classes

Namesort descending Description
EntityFormWizardBase The base class for all entity form wizards.