function wp_andreas09_nav($args = '') {
global $wp_query;
parse_str($args, $r);
if (!isset($r['current'])) $r['current'] = -1;
if (!isset($r['show_all_parents'])) $r['show_all_parents'] = 0;
if (!isset($r['show_root'])) $r['show_root'] = 0;
if (!isset($r['list_tag'])) $r['show_root'] = 1;
if($r['current'] == "")
return;
if($r['current'] == -1 && $wp_query->is_page == true) {
$r['current'] = $wp_query->post->ID;
}
if($r['current'] == -1 && $r['show_root'] != 0) {
$r['current'] = 0;
}
// Query pages.
$pages = get_pages($args);
if ( $pages ) {
// Now loop over all pages that were selected
$page_tree = Array();
$parent_page_id = null;
$parents= Array();
foreach($pages as $page) {
// set the title for the current page
$page_tree[$page->ID]['title'] = $page->post_title;
$page_tree[$page->ID]['parent'] = $page->post_parent;
// set the selected date for the current page
// depending on the query arguments this is either
// the createtion date or the modification date
// as a unix timestamp. It will also always be in the
// ts field.
if (! empty($r['show_date'])) {
if ('modified' == $r['show_date'])
$page_tree[$page->ID]['ts'] = $page->time_modified;
else
$page_tree[$page->ID]['ts'] = $page->time_created;
}
// The tricky bit!!
// Using the parent ID of the current page as the
// array index we set the curent page as a child of that page.
// We can now start looping over the $page_tree array
// with any ID which will output the page links from that ID downwards.
$page_tree[$page->post_parent]['children'][] = $page->ID;
if( $r['current'] == $page->ID) {
if($page->post_parent != 0 || $r['show_root'] == true)
$parents[] = $page->post_parent;
}
}
$len = count($parents);
for($i = 0; $i < $len ; $i++) {
$parent_page_id = $parents[$i];
$parent_page = $page_tree[$parent_page_id];
if(isset($parent_page['parent']) && !in_array($parent_page['parent'], $parents)) {
if($parent_page['parent'] != 0 || $r['show_root'] == true) {
$parents[] = $parent_page['parent'];
$len += 1;
if( $len >= 2 && $r['show_all_parents'] == 0) {
break;
}
}
}
}
$parents = array_reverse($parents);
$level = 0;
$parent_out == false;
foreach( $parents as $parent_page_id ) {
$level += 1;
$css_class = 'level' . $level;
if( $r['list_tag'] == true || $parent_out == true)
echo "<ul class='". $css_class . "'>";
foreach( $page_tree[$parent_page_id]['children'] as $page_id) {
$cur_page = $page_tree[$page_id];
$title = $cur_page['title'];
$css_class = '';
if( $page_id == $r['current']) {
$css_class .= ' current';
}
if( $page_id == $page_tree[$r['current']]['parent']){
$css_class .= 'currentparent';
}
echo "<li class='" . $css_class . "' ><a href='" . get_page_link($page_id) . "' title='" . wp_specialchars($title) . "'>" . $title . "</a></li>\n";
}
echo "</ul>";
$parent_out = true;
}
if( is_array($page_tree[$r['current']]['children']) === true ) {
$level += 1;
$css_class = 'level' . $level;
if( $r['list_tag'] == true || $parent_out == true)
echo "<ul class='". $css_class . " children'>";
foreach( $page_tree[$r['current']]['children'] as $page_id) {
$cur_page = $page_tree[$page_id];
$title = $cur_page['title'];
echo "<li class='" . $css_class . "'><a href='" . get_page_link($page_id) . "' title='" . wp_specialchars($title) . "'>" . $title . "</a></li>\n";
}
echo "</ul>";
}
}
}
?>
