theme_book_navigation
Definition
theme_book_navigation($node)
drupal/modules/book.module, line 442
Description
Prepares both the custom breadcrumb trail and the forward/backward navigation for a node presented as a book page.
Related topics
Name | Description |
|---|---|
| Themeable functions | Functions that display HTML, and which can be customized by themes. |
Code
function theme_book_navigation($node) {
$path = book_location($node);
// Construct the breadcrumb:
$node->breadcrumb = array(); // Overwrite the trail with a book trail.
foreach ($path as $level) {
$node->breadcrumb[] = array('path' => 'node/'. $level->nid, 'title' => $level->title);
}
$node->breadcrumb[] = array('path' => 'node/'. $node->nid);
if ($node->nid) {
$output .= '<div class="book">';
if ($tree = book_tree($node->nid)) {
$output .= '<div class="tree">'. $tree .'</div>';
}
if ($prev = book_prev($node)) {
$links .= '<div class="prev">';
$links .= l(t('previous'), 'node/'. $prev->nid, array('title' => t('View the previous page.')));
$links .= '</div>';
$titles .= '<div class="prev">'. check_plain($prev->title) .'</div>';
}
else {
$links .= '<div class="prev"> </div>'; // Make an empty div to fill the space.
}
if ($next = book_next($node)) {
$links .= '<div class="next">';
$links .= l(t('next'), 'node/'. $next->nid, array('title' => t('View the next page.')));
$links .= '</div>';
$titles .= '<div class="next">'. check_plain($next->title) .'</div>';
}
else {
$links .= '<div class="next"> </div>'; // Make an empty div to fill the space.
}
if ($node->parent) {
$links .= '<div class="up">';
$links .= l(t('up'), 'node/'. $node->parent, array('title' => t('View this page\'s parent section.')));
$links .= '</div>';
}
$output .= '<div class="nav">';
$output .= ' <div class="links">'. $links .'</div>';
$output .= ' <div class="titles">'. $titles .'</div>';
$output .= '</div>';
$output .= '</div>';
}
$node->body = $node->body.$output;
return $node;
}