protected BookManager::recurseTableOfContents(array $tree, $indent, array

public BookOutline::__construct(BookManagerInterface $book_manager)

public BookRemoveForm::buildForm(array $form, FormStateInterface

public BookManager::bookSubtreeData($link) Gets

protected BookManager::buildItems(array $tree)

Displays the book outline form. Hierarchy class \Drupal\Core\Form\

public BookOutlineStorageInterface::hasBooks()

Controller routines for book routes. Hierarchy class \Drupal\Core\Controller\

Stores flattened book trees. Type:

Provides handling to render the book outline. Hierarchy class \Drupal\book\