NodeTypeForm.php

<?php

namespace Drupal\node;

use Drupal\Core\Entity\BundleEntityFormBase;
use Drupal\Core\Entity\EntityFieldManagerInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\language\Entity\ContentLanguageSettings;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Form handler for node type forms.
 *
 * @internal
 */
class NodeTypeForm extends BundleEntityFormBase {

  /**
   * The entity field manager.
   *
   * @var \Drupal\Core\Entity\EntityFieldManagerInterface
   */
  protected $entityFieldManager;

  /**
   * Constructs the NodeTypeForm object.
   *
   * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
   *   The entity field manager.
   */
  public function __construct(EntityFieldManagerInterface $entity_field_manager) {
    $this->entityFieldManager = $entity_field_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity_field.manager'));
  }

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    $form = parent::form($form, $form_state);
    $type = $this->entity;
    if ($this->operation == 'add') {
      $form['#title'] = $this
        ->t('Add content type');
      $fields = $this->entityFieldManager
        ->getBaseFieldDefinitions('node');

      // Create a node with a fake bundle using the type's UUID so that we can
      // get the default values for workflow settings.
      // @todo Make it possible to get default values without an entity.
      //   https://www.drupal.org/node/2318187
      $node = $this->entityTypeManager
        ->getStorage('node')
        ->create([
        'type' => $type
          ->uuid(),
      ]);
    }
    else {
      $form['#title'] = $this
        ->t('Edit %label content type', [
        '%label' => $type
          ->label(),
      ]);
      $fields = $this->entityFieldManager
        ->getFieldDefinitions('node', $type
        ->id());

      // Create a node to get the current values for workflow settings fields.
      $node = $this->entityTypeManager
        ->getStorage('node')
        ->create([
        'type' => $type
          ->id(),
      ]);
    }
    $form['name'] = [
      '#title' => $this
        ->t('Name'),
      '#type' => 'textfield',
      '#default_value' => $type
        ->label(),
      '#description' => $this
        ->t('The human-readable name for this content type, displayed on the <em>Content types</em> page.'),
      '#required' => TRUE,
      '#size' => 30,
    ];
    $form['type'] = [
      '#type' => 'machine_name',
      '#default_value' => $type
        ->id(),
      '#maxlength' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
      '#disabled' => $type
        ->isLocked(),
      '#machine_name' => [
        'exists' => [
          'Drupal\\node\\Entity\\NodeType',
          'load',
        ],
        'source' => [
          'name',
        ],
      ],
      '#description' => $this
        ->t('Unique machine-readable name: lowercase letters, numbers, and underscores only.', [
        '%node-add' => $this
          ->t('Add content'),
      ]),
    ];
    $form['description'] = [
      '#title' => $this
        ->t('Description'),
      '#type' => 'textarea',
      '#default_value' => $type
        ->getDescription(),
      '#description' => $this
        ->t('Displays on the <em>Content types</em> page.'),
    ];
    $form['additional_settings'] = [
      '#type' => 'vertical_tabs',
      '#attached' => [
        'library' => [
          'node/drupal.content_types',
        ],
      ],
    ];
    $form['submission'] = [
      '#type' => 'details',
      '#title' => $this
        ->t('Submission form settings'),
      '#group' => 'additional_settings',
      '#open' => TRUE,
    ];
    $form['submission']['title_label'] = [
      '#title' => $this
        ->t('Title field label'),
      '#type' => 'textfield',
      '#default_value' => $fields['title']
        ->getLabel(),
      '#required' => TRUE,
    ];
    $form['submission']['preview_mode'] = [
      '#type' => 'radios',
      '#title' => $this
        ->t('Preview before submitting'),
      '#default_value' => $type
        ->getPreviewMode(),
      '#options' => [
        DRUPAL_DISABLED => $this
          ->t('Disabled'),
        DRUPAL_OPTIONAL => $this
          ->t('Optional'),
        DRUPAL_REQUIRED => $this
          ->t('Required'),
      ],
    ];
    $form['submission']['help'] = [
      '#type' => 'textarea',
      '#title' => $this
        ->t('Explanation or submission guidelines'),
      '#default_value' => $type
        ->getHelp(),
      '#description' => $this
        ->t('This text will be displayed at the top of the page when creating or editing content of this type.'),
    ];
    $form['workflow'] = [
      '#type' => 'details',
      '#title' => $this
        ->t('Publishing options'),
      '#group' => 'additional_settings',
    ];
    $workflow_options = [
      'status' => $node->status->value,
      'promote' => $node->promote->value,
      'sticky' => $node->sticky->value,
      'revision' => $type
        ->shouldCreateNewRevision(),
    ];

    // Prepare workflow options to be used for 'checkboxes' form element.
    $keys = array_keys(array_filter($workflow_options));
    $workflow_options = array_combine($keys, $keys);
    $form['workflow']['options'] = [
      '#type' => 'checkboxes',
      '#title' => $this
        ->t('Default options'),
      '#default_value' => $workflow_options,
      '#options' => [
        'status' => $this
          ->t('Published'),
        'promote' => $this
          ->t('Promoted to front page'),
        'sticky' => $this
          ->t('Sticky at top of lists'),
        'revision' => $this
          ->t('Create new revision'),
      ],
      '#description' => $this
        ->t('Users with sufficient access rights will be able to override these options.'),
    ];
    if ($this->moduleHandler
      ->moduleExists('language')) {
      $form['language'] = [
        '#type' => 'details',
        '#title' => $this
          ->t('Language settings'),
        '#group' => 'additional_settings',
      ];
      $language_configuration = ContentLanguageSettings::loadByEntityTypeBundle('node', $type
        ->id());
      $form['language']['language_configuration'] = [
        '#type' => 'language_configuration',
        '#entity_information' => [
          'entity_type' => 'node',
          'bundle' => $type
            ->id(),
        ],
        '#default_value' => $language_configuration,
      ];
    }
    $form['display'] = [
      '#type' => 'details',
      '#title' => $this
        ->t('Display settings'),
      '#group' => 'additional_settings',
    ];
    $form['display']['display_submitted'] = [
      '#type' => 'checkbox',
      '#title' => $this
        ->t('Display author and date information'),
      '#default_value' => $type
        ->displaySubmitted(),
      '#description' => $this
        ->t('Author username and publish date will be displayed.'),
    ];
    return $this
      ->protectBundleIdElement($form);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);
    $id = trim($form_state
      ->getValue('type'));

    // '0' is invalid, since elsewhere we check it using empty().
    if ($id == '0') {
      $form_state
        ->setErrorByName('type', $this
        ->t("Invalid machine-readable name. Enter a name other than %invalid.", [
        '%invalid' => $id,
      ]));
    }
  }

  /**
   * {@inheritdoc}
   */
  public function buildEntity(array $form, FormStateInterface $form_state) {

    /** @var \Drupal\node\NodeTypeInterface $entity */
    $entity = parent::buildEntity($form, $form_state);

    // The description and help text cannot be empty strings.
    if (trim($form_state
      ->getValue('description')) === '') {
      $entity
        ->set('description', NULL);
    }
    if (trim($form_state
      ->getValue('help')) === '') {
      $entity
        ->set('help', NULL);
    }
    return $entity;
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
    $type = $this->entity;
    $type
      ->setNewRevision($form_state
      ->getValue([
      'options',
      'revision',
    ]));
    $type
      ->set('type', trim($type
      ->id()));
    $type
      ->set('name', trim($type
      ->label()));
    $status = $type
      ->save();
    $t_args = [
      '%name' => $type
        ->label(),
    ];
    if ($status == SAVED_UPDATED) {
      $this
        ->messenger()
        ->addStatus($this
        ->t('The content type %name has been updated.', $t_args));
    }
    elseif ($status == SAVED_NEW) {
      node_add_body_field($type);
      $this
        ->messenger()
        ->addStatus($this
        ->t('The content type %name has been added.', $t_args));
      $context = array_merge($t_args, [
        'link' => $type
          ->toLink($this
          ->t('View'), 'collection')
          ->toString(),
      ]);
      $this
        ->logger('node')
        ->notice('Added content type %name.', $context);
    }
    $fields = $this->entityFieldManager
      ->getFieldDefinitions('node', $type
      ->id());

    // Update title field definition.
    $title_field = $fields['title'];
    $title_label = $form_state
      ->getValue('title_label');
    if ($title_field
      ->getLabel() != $title_label) {
      $title_field
        ->getConfig($type
        ->id())
        ->setLabel($title_label)
        ->save();
    }

    // Update workflow options.
    // @todo Make it possible to get default values without an entity.
    //   https://www.drupal.org/node/2318187
    $node = $this->entityTypeManager
      ->getStorage('node')
      ->create([
      'type' => $type
        ->id(),
    ]);
    foreach ([
      'status',
      'promote',
      'sticky',
    ] as $field_name) {
      $value = (bool) $form_state
        ->getValue([
        'options',
        $field_name,
      ]);
      if ($node->{$field_name}->value != $value) {
        $fields[$field_name]
          ->getConfig($type
          ->id())
          ->setDefaultValue($value)
          ->save();
      }
    }
    $this->entityFieldManager
      ->clearCachedFieldDefinitions();
    $form_state
      ->setRedirectUrl($type
      ->toUrl('collection'));
  }

}