protected BookManager::buildItems(array $tree)
Builds the #items property for a book tree's renderable array.
Helper function for ::bookTreeOutput().
Parameters
array $tree: A data structure representing the tree.
Return value
array The value to use for the #items property of a renderable menu.
File
- core/modules/book/src/BookManager.php, line 533
Class
- BookManager
- Defines a book manager.
Namespace
Drupal\book
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | protected function buildItems(array $tree) { $items = []; foreach ($tree as $data) { $element = []; // Generally we only deal with visible links, but just in case. if (!$data['link']['access']) { continue; } // Set a class for the <li> tag. Since $data['below'] may contain local // tasks, only set 'expanded' to true if the link also has children within // the current book. $element['is_expanded'] = FALSE; $element['is_collapsed'] = FALSE; if ($data['link']['has_children'] && $data['below']) { $element['is_expanded'] = TRUE; } elseif ($data['link']['has_children']) { $element['is_collapsed'] = TRUE; } // Set a helper variable to indicate whether the link is in the active // trail. $element['in_active_trail'] = FALSE; if ($data['link']['in_active_trail']) { $element['in_active_trail'] = TRUE; } // Allow book-specific theme overrides. $element['attributes'] = new Attribute(); $element['title'] = $data['link']['title']; $node = $this->entityManager->getStorage('node')->load($data['link']['nid']); $element['url'] = $node->urlInfo(); $element['localized_options'] = !empty($data['link']['localized_options']) ? $data['link']['localized_options'] : []; $element['localized_options']['set_active_class'] = TRUE; $element['below'] = $data['below'] ? $this->buildItems($data['below']) : []; $element['original_link'] = $data['link']; // Index using the link's unique nid. $items[$data['link']['nid']] = $element; } return $items;} |
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