function book_node_links_alter

Implements hook_node_links_alter().

File

core/modules/book/book.module, line 92

Code

function book_node_links_alter(array &$links, NodeInterface $node, array &$context) {
    if ($context['view_mode'] != 'rss') {
        $account = \Drupal::currentUser();
        if (isset($node->book['depth'])) {
            if ($context['view_mode'] == 'full' && node_is_page($node)) {
                $child_type = \Drupal::config('book.settings')->get('child_type');
                $access_control_handler = \Drupal::entityTypeManager()->getAccessControlHandler('node');
                if (($account->hasPermission('add content to books') || $account->hasPermission('administer book outlines')) && $access_control_handler->createAccess($child_type) && $node->book['depth'] < BookManager::BOOK_MAX_DEPTH) {
                    $book_links['book_add_child'] = [
                        'title' => t('Add child page'),
                        'url' => Url::fromRoute('node.add', [
                            'node_type' => $child_type,
                        ], [
                            'query' => [
                                'parent' => $node->id(),
                            ],
                        ]),
                    ];
                }
                if ($account->hasPermission('access printer-friendly version')) {
                    $book_links['book_printer'] = [
                        'title' => t('Printer-friendly version'),
                        'url' => Url::fromRoute('book.export', [
                            'type' => 'html',
                            'node' => $node->id(),
                        ]),
                        'attributes' => [
                            'title' => t('Show a printer-friendly version of this book page and its sub-pages.'),
                        ],
                    ];
                }
            }
        }
        if (!empty($book_links)) {
            $links['book'] = [
                '#theme' => 'links__node__book',
                '#links' => $book_links,
                '#attributes' => [
                    'class' => [
                        'links',
                        'inline',
                    ],
                ],
            ];
        }
    }
}