CourseObjectBook.php in Course 8.2

Namespace

Drupal\course_book\Plugin\course\CourseObject

File

modules/course_book/src/Plugin/course/CourseObject/CourseObjectBook.php

<?php

namespace Drupal\course_book\Plugin\course\CourseObject;

use Drupal;
use Drupal\course_content\Course\Object\CourseObjectNode;
use function content_access_get_per_node_settings;
use function content_access_save_per_node_settings;
use function course_book_count;
use function course_book_override_outline_list_item;
use function node_type_get_names;

/**
 * @CourseObject(
 *   id = "book",
 *   label = "Book",
 *   handlers = {
 *     "fulfillment" = "\Drupal\course_book\Plugin\course\CourseObject\CourseObjectBookFulfillment"
 *   }
 * )
 */
class CourseObjectBook extends CourseObjectNode {

  /**
   * Course node context handler callback.
   */
  public static function getNodeInstances($node) {
    if (!empty($node->book['bid'])) {
      return array(
        $node->book['bid'],
      );
    }
  }
  function getNodeTypes() {
    if (Drupal::currentUser()
      ->hasPermission('administer book outlines')) {
      return array_keys(node_type_get_names());
    }
    else {
      $config = \Drupal::config('book.settings');
      return $config
        ->get('allowed_types');
    }
  }

  /**
   * Make the book.
   */
  public function createInstance($node = NULL) {
    $node = \Drupal\node\Entity\Node::create([
      'type' => $this
        ->getOption('node_type'),
    ]);
    $node->book['bid'] = 'new';
    parent::createInstance($node);
  }
  function optionsDefinition() {
    $defaults = parent::optionsDefinition();
    $defaults['node_type'] = \Drupal::config('course_book.settings')
      ->get('default_node_type', 'book');
    $defaults['book_tracking'] = 'all';
    $defaults['outline_list_item_type'] = 'active_tree';
    return $defaults;
  }
  function optionsForm(&$form, &$form_state) {
    $config = $this
      ->getOptions();
    parent::optionsForm($form, $form_state);
    $form['book_tracking'] = array(
      '#title' => t('Completion criteria'),
      '#type' => 'select',
      '#options' => array(
        'one' => t('View any page'),
        'all' => t('View all pages'),
      ),
      '#default_value' => $config['book_tracking'],
    );

    // Add a book-specific configuration for course outline list item type, only
    // if the standard course list outline handler is selected.
    if ($this
      ->getCourse()
      ->get('outline')
      ->getString() == 'course') {
      $form['outline_list_item_type'] = array(
        '#title' => t('Course outline list item type'),
        '#type' => 'select',
        '#options' => array(
          'all_pages' => t('All book pages as an expanded, nested list'),
          'active_tree' => t('Only the active book menu tree items, with a count indicator'),
          'count' => t('A count indicator only'),
        ),
        '#default_value' => $config['outline_list_item_type'],
      );
    }
  }

  /**
   * Grade (track) the book based on the fulfillment data.
   */
  function grade($user) {

    /* @var $book_manager Drupal\book\BookManager */
    $book_manager = \Drupal::service('book.manager');
    $toc = $book_manager
      ->getTableOfContents($this
      ->getInstanceId(), \Drupal::config('course_book.settings')
      ->get('depth', 100));
    if (course_book_count($this
      ->getInstanceId()) == 0) {

      // Book has no pages. Complete object.
      $this
        ->getFulfillment($user)
        ->setComplete(1)
        ->save();
      return;
    }
    if ($this
      ->getOption('book_tracking') == 'all') {
      $nids = array_keys($toc);
      $fulfillment = $this
        ->getFulfillment($user)
        ->getOption('book_fulfillment');
      $viewed = $fulfillment ? array_keys(array_filter($fulfillment)) : array();
      if (!array_diff($nids, $viewed)) {
        $this
          ->getFulfillment($user)
          ->setComplete(1)
          ->save();
      }
    }
    elseif ($this
      ->getOption('book_tracking') == 'one') {
      $this
        ->getFulfillment($user)
        ->setComplete(1)
        ->save();
    }
  }

  /**
   * Overrides navigation links.
   */
  public function overrideNavigation() {
    $links = parent::overrideNavigation();
    $route_match = Drupal::routeMatch();
    if ($route_match
      ->getRouteName() == 'entity.node.canonical') {
      $node = $route_match
        ->getParameter('node');

      /* @var $book_outline Drupal\book\BookOutline */
      $book_outline = \Drupal::service('book.outline');
      if (isset($node->book)) {
        $book_link = $node->book;
        if ($prev = $book_outline
          ->prevLink($book_link)) {
          $links['prev'] = \Drupal\Core\Link::createFromRoute(t('Previous'), 'entity.node.canonical', [
            'node' => $prev['nid'],
          ]);
        }
        if ($next = $book_outline
          ->nextLink($book_link)) {
          $links['next'] = \Drupal\Core\Link::createFromRoute(t('Next'), 'entity.node.canonical', [
            'node' => $next['nid'],
          ]);
        }
      }
      return $links;
    }
  }

  /**
   * Overrides a course outline list item.
   */
  public function overrideOutlineListItem(&$item) {

    // Check that course list outline handler is selected.
    if ($this
      ->getCourse()
      ->get('outline')
      ->getString() == 'course') {
      $type = $this
        ->getOption('outline_list_item_type');

      // Override the list item by reference.
      course_book_override_outline_list_item($item, $this, $type);
    }
  }
  public function getCloneAbility() {
    return t('%title will only clone the first page.', array(
      '%title' => $this
        ->getTitle(),
    ));
  }

  /**
   * Override of CourseObjectNode::save()
   *
   * We have to remove the stock "view" content access permissions on Books, if
   * node_access_book is enabled. Otherwise, users outside of the course can
   * still access child book pages of a private book parent.
   */
  public function save() {

    // Take care of the parent book page.
    parent::save();
    if ($this
      ->hasNodePrivacySupport() && $this
      ->getOption('private') && Drupal::moduleHandler()
      ->moduleExists('node_access_book')) {

      // Remove "view" permissions on all the child pages.
      $flat = array();
      $tree = menu_tree_all_data($this
        ->getNode()->book['menu_name']);
      _book_flatten_menu($tree, $flat);
      foreach ($flat as $item) {
        $nid = str_replace('node/', '', $item['link_path']);
        $node = \Drupal\node\Entity\Node::load($nid);
        $settings = content_access_get_per_node_settings($node);
        $settings['view'] = array();
        content_access_save_per_node_settings($node, $settings);

        // Resave node to update access.
        node_access_acquire_grants($node);
      }
    }
  }

  /**
   * Override of CourseObjectNode::freeze().
   *
   * Do not freeze the parent book ID.
   *
   * course_book_node_insert() stumbles if this is set and we are cloning a
   * book.
   */
  public function freeze() {
    $ice = parent::freeze();
    unset($ice->node->book['bid']);
    return $ice;
  }

}

Classes

Name	Description
CourseObjectBook	Plugin annotation @CourseObject( id = "book", label = "Book", handlers = { "fulfillment" = "\Drupal\course_book\Plugin\course\CourseObject\CourseObjectBookFulfillment" } )