[wp-snippet] sidebar navigation

gistfile1.aw

<?php
//if the post has a parent
$title = "";
global $post;
if($post->post_parent){
  //collect ancestor pages
  $relations = get_post_ancestors($post->ID);
  
  //add current post to pages
  array_push($relations, $post->ID);
  $posts = get_pages("echo=0&sort_column=menu_order&child_of=".$post->ID);
  
  foreach($posts as $page){
	array_push($relations, $page->ID);
  }
  //get comma delimited list of children and parents and self
  $relations_string = implode(",",$relations);
  //use include to list only the collected pages. 
  $sidelinks = wp_list_pages("title_li=&echo=0&sort_column=menu_order&include=".$relations_string);
}else{
  // display only main level and children
  $sidelinks = wp_list_pages("title_li=&echo=0&sort_column=menu_order&depth=0");
}
?>
<h1><?=$post->post_title?></h1>
<?php
if ($sidelinks) { ?>
  <ul class="navmenu">
    <?php //links in <li> tags
    echo $sidelinks; ?>
  </ul>         
<?php } ?>