Issue #3295753 by mostepaniukvm: Start custom_elements_ui implementation.

name: Custom Elements UI

description: 'Provides a user interface for the Custom Elements module.'

package: Other

type: module

core_version_requirement: ^9

dependencies:

  - custom_elements:custom_elements

services:

  custom_elements_ui.subscriber:

    class: Drupal\custom_elements_ui\Routing\RouteSubscriber

    arguments: [ '@entity_type.manager' ]

    tags:

      - { name: event_subscriber }

<?php

namespace Drupal\custom_elements_ui\Routing;

use Drupal\Core\Entity\EntityTypeManagerInterface;

use Drupal\Core\Routing\RouteSubscriberBase;

use Drupal\Core\Routing\RoutingEvents;

use Symfony\Component\Routing\Route;

use Symfony\Component\Routing\RouteCollection;

/**

 * Subscriber for Custom Elements UI routes.

 *

 * @todo Ensure it's not enough to announce new routes in .routing.yml.

 */

class RouteSubscriber extends RouteSubscriberBase {

  /**

   * The entity type manager service.

   *

   * @var \Drupal\Core\Entity\EntityTypeManagerInterface

   */

  protected $entityTypeManager;

  /**

   * Constructs a RouteSubscriber object.

   *

   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager

   *   The entity type manager service.

   */

  public function __construct(EntityTypeManagerInterface $entity_type_manager) {

    $this->entityTypeManager = $entity_type_manager;

  }

  /**

   * {@inheritdoc}

   */

  protected function alterRoutes(RouteCollection $collection) {

    foreach ($this->entityTypeManager->getDefinitions() as $entity_type_id => $entity_type) {

      if ($route_name = $entity_type->get('field_ui_base_route')) {

        // Try to get the route from the current collection.

        if (!$entity_route = $collection->get($route_name)) {

          continue;

        }

        $path = $entity_route->getPath();

        $options = $entity_route->getOptions();

        if ($bundle_entity_type = $entity_type->getBundleEntityType()) {

          $options['parameters'][$bundle_entity_type] = [

            'type' => 'entity:' . $bundle_entity_type,

          ];

        }

        // @todo Needed?

        // Special parameter used to easily recognize all Custom Elements UI

        // routes.

        $options['_custom_elements_ui'] = TRUE;

        $defaults = [

          'entity_type_id' => $entity_type_id,

        ];

        // If the entity type has no bundles and it doesn't use {bundle} in its

        // admin path, use the entity type.

        if (strpos($path, '{bundle}') === FALSE) {

          $defaults['bundle'] = !$entity_type->hasKey('bundle') ? $entity_type_id : '';

        }

        // @todo Use own route callback.

        $route = new Route(

          "$path/ce",

          [

            '_entity_form' => 'entity_view_display.edit',

            '_title' => 'Manage CE',

            'view_mode_name' => 'default',

          ] + $defaults,

          // @todo Own access checking.

          ['_field_ui_view_mode_access' => 'administer ' . $entity_type_id . ' display'],

          $options

        );

        $collection->add("entity.entity_ce_display.{$entity_type_id}.default", $route);

        $route = new Route(

          "$path/ce/{view_mode_name}",

          [

            '_entity_form' => 'entity_view_display.edit',

            '_title' => 'Manage CE',

          ] + $defaults,

          // @todo Own access checking.

          ['_field_ui_view_mode_access' => 'administer ' . $entity_type_id . ' display'],

          $options

        );

        $collection->add("entity.entity_ce_display.{$entity_type_id}.view_mode", $route);

      }

    }

  }

  /**

   * {@inheritdoc}

   */

  public static function getSubscribedEvents() {

    $events = parent::getSubscribedEvents();

    $events[RoutingEvents::ALTER] = ['onAlterRoutes', -150];

    return $events;

  }

}