function book_tree_recurse in Drupal 5
Same name and namespace in other branches
- 4 modules/book.module \book_tree_recurse()
This is a helper function for book_tree()
1 call to book_tree_recurse()
- book_tree in modules/
book/ book.module - Returns an HTML nested list (wrapped in a menu-class div) representing the book nodes as a tree.
File
- modules/
book/ book.module, line 558 - Allows users to collaboratively author a book.
Code
function book_tree_recurse($nid, $depth, $children, $unfold = array()) {
$output = '';
if ($depth > 0) {
if (isset($children[$nid])) {
foreach ($children[$nid] as $foo => $node) {
if (in_array($node->nid, $unfold)) {
if ($tree = book_tree_recurse($node->nid, $depth - 1, $children, $unfold)) {
$output .= '<li class="expanded">';
$output .= l($node->title, 'node/' . $node->nid);
$output .= '<ul class="menu">' . $tree . '</ul>';
$output .= '</li>';
}
else {
$output .= '<li class="leaf">' . l($node->title, 'node/' . $node->nid) . '</li>';
}
}
else {
if ($tree = book_tree_recurse($node->nid, 1, $children)) {
$output .= '<li class="collapsed">' . l($node->title, 'node/' . $node->nid) . '</li>';
}
else {
$output .= '<li class="leaf">' . l($node->title, 'node/' . $node->nid) . '</li>';
}
}
}
}
}
return $output;
}