function BookManager::addFormElements

Overrides BookManagerInterface::addFormElements

File

core/modules/book/src/BookManager.php, line 174

Class

BookManager

Defines a book manager.

Namespace

Code

public function addFormElements(array $form, FormStateInterface $form_state, NodeInterface $node, AccountInterface $account, $collapsed = TRUE) {
    // If the form is being processed during the Ajax callback of our book bid
    // dropdown, then $form_state will hold the value that was selected.
    if ($form_state->hasValue('book')) {
        $node->book = $form_state->getValue('book');
    }
    $form['book'] = [
        '#type' => 'details',
        '#title' => $this->t('Book outline'),
        '#weight' => 10,
        '#open' => !$collapsed,
        '#group' => 'advanced',
        '#attributes' => [
            'class' => [
                'book-outline-form',
            ],
        ],
        '#attached' => [
            'library' => [
                'book/drupal.book',
            ],
        ],
        '#tree' => TRUE,
    ];
    foreach ([
        'nid',
        'has_children',
        'original_bid',
        'parent_depth_limit',
    ] as $key) {
        $form['book'][$key] = [
            '#type' => 'value',
            '#value' => $node->book[$key],
        ];
    }
    $form['book']['pid'] = $this->addParentSelectFormElements($node->book);
    // @see \Drupal\book\Form\BookAdminEditForm::bookAdminTableTree(). The
    // weight may be larger than 15.
    $form['book']['weight'] = [
        '#type' => 'weight',
        '#title' => $this->t('Weight'),
        '#default_value' => $node->book['weight'],
        '#delta' => max(15, abs($node->book['weight'])),
        '#weight' => 5,
        '#description' => $this->t('Pages at a given level are ordered first by weight and then by title.'),
    ];
    $options = [];
    $nid = !$node->isNew() ? $node->id() : 'new';
    if ($node->id() && $nid == $node->book['original_bid'] && $node->book['parent_depth_limit'] == 0) {
        // This is the top level node in a maximum depth book and thus cannot be
        // moved.
        $options[$node->id()] = $node->label();
    }
    else {
        foreach ($this->getAllBooks() as $book) {
            $options[$book['nid']] = $book['title'];
        }
    }
    if ($account->hasPermission('create new books') && ($nid == 'new' || $nid != $node->book['original_bid'])) {
        // The node can become a new book, if it is not one already.
        $options = [
            $nid => $this->t('- Create a new book -'),
        ] + $options;
    }
    if (!$node->book['bid'] || $nid === 'new' || $node->book['original_bid'] === 0) {
        // The node is not currently in the hierarchy.
        $options = [
            0 => $this->t('- None -'),
        ] + $options;
    }
    // Add a drop-down to select the destination book.
    $form['book']['bid'] = [
        '#type' => 'select',
        '#title' => $this->t('Book'),
        '#default_value' => $node->book['bid'],
        '#options' => $options,
        '#access' => (bool) $options,
        '#description' => $this->t('Your page will be a part of the selected book.'),
        '#weight' => -5,
        '#attributes' => [
            'class' => [
                'book-title-select',
            ],
        ],
        '#ajax' => [
            'callback' => 'book_form_update',
            'wrapper' => 'edit-book-plid-wrapper',
            'effect' => 'fade',
            'speed' => 'fast',
        ],
    ];
    return $form;
}