91 lines
2.6 KiB
PHP
91 lines
2.6 KiB
PHP
<?php
|
|
|
|
namespace Drupal\book;
|
|
|
|
use Drupal\Core\Breadcrumb\Breadcrumb;
|
|
use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
|
|
use Drupal\Core\Entity\EntityManagerInterface;
|
|
use Drupal\Core\Link;
|
|
use Drupal\Core\Routing\RouteMatchInterface;
|
|
use Drupal\Core\Session\AccountInterface;
|
|
use Drupal\Core\StringTranslation\StringTranslationTrait;
|
|
use Drupal\node\NodeInterface;
|
|
|
|
/**
|
|
* Provides a breadcrumb builder for nodes in a book.
|
|
*/
|
|
class BookBreadcrumbBuilder implements BreadcrumbBuilderInterface {
|
|
use StringTranslationTrait;
|
|
|
|
/**
|
|
* The node storage.
|
|
*
|
|
* @var \Drupal\Core\Entity\EntityStorageInterface
|
|
*/
|
|
protected $nodeStorage;
|
|
|
|
/**
|
|
* The current user account.
|
|
*
|
|
* @var \Drupal\Core\Session\AccountInterface
|
|
*/
|
|
protected $account;
|
|
|
|
/**
|
|
* Constructs the BookBreadcrumbBuilder.
|
|
*
|
|
* @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
|
|
* The entity manager service.
|
|
* @param \Drupal\Core\Session\AccountInterface $account
|
|
* The current user account.
|
|
*/
|
|
public function __construct(EntityManagerInterface $entity_manager, AccountInterface $account) {
|
|
$this->nodeStorage = $entity_manager->getStorage('node');
|
|
$this->account = $account;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function applies(RouteMatchInterface $route_match) {
|
|
$node = $route_match->getParameter('node');
|
|
return $node instanceof NodeInterface && !empty($node->book);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function build(RouteMatchInterface $route_match) {
|
|
$book_nids = array();
|
|
$breadcrumb = new Breadcrumb();
|
|
|
|
$links = array(Link::createFromRoute($this->t('Home'), '<front>'));
|
|
$book = $route_match->getParameter('node')->book;
|
|
$depth = 1;
|
|
// We skip the current node.
|
|
while (!empty($book['p' . ($depth + 1)])) {
|
|
$book_nids[] = $book['p' . $depth];
|
|
$depth++;
|
|
}
|
|
$parent_books = $this->nodeStorage->loadMultiple($book_nids);
|
|
if (count($parent_books) > 0) {
|
|
$depth = 1;
|
|
while (!empty($book['p' . ($depth + 1)])) {
|
|
if (!empty($parent_books[$book['p' . $depth]]) && ($parent_book = $parent_books[$book['p' . $depth]])) {
|
|
$access = $parent_book->access('view', $this->account, TRUE);
|
|
$breadcrumb->addCacheableDependency($access);
|
|
if ($access->isAllowed()) {
|
|
$breadcrumb->addCacheableDependency($parent_book);
|
|
$links[] = Link::createFromRoute($parent_book->label(), 'entity.node.canonical', array('node' => $parent_book->id()));
|
|
}
|
|
}
|
|
$depth++;
|
|
}
|
|
}
|
|
$breadcrumb->setLinks($links);
|
|
$breadcrumb->addCacheContexts(['route.book_navigation']);
|
|
return $breadcrumb;
|
|
}
|
|
|
|
}
|