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<?php
/**
* @file
* Provides optional sorting of the active trail in the menu tree.
*/
/**
* Sort the active trail to the top of the tree.
*
* @param $tree
* array The menu tree to sort.
* @return
* void
*/
function _menu_tree_sort_active_path(&$tree) {
// To traverse the original tree down the active trail, we use a pointer.
$current_level =& $tree;
// Traverse the tree along the active trail.
do {
$next_level = $sort = $first_key = FALSE;
foreach ($current_level AS $key => &$value) {
// Save the first key for later use.
if (!$first_key) {
$first_key = $key;
}
if ($current_level[$key]['link']['in_active_trail'] && $current_level[$key]['below']) {
// Don't re-sort if its already sorted.
if ($key != $first_key) {
// Create a new key that will come before the first key.
list($first_key, ) = explode(' ', $first_key);
$first_key--;
list(, $new_key) = explode(' ', $key, 2);
$new_key = "$first_key $new_key";
// Move the item to the new key.
$current_level[$new_key] = $current_level[$key];
unset($current_level[$key]);
$key = $new_key;
$sort = TRUE; // Flag sorting.
}
$next_level = $key; // Flag subtree.
break;
}
}
// Sort this level.
if ($sort) {
ksort($current_level);
}
// Continue in the subtree, if it exists.
if ($next_level) {
$current_level =& $current_level[$next_level]['below'];
}
} while ($next_level);
}