/**
* Add page to breadcrumb queue
*
* @uses $_[SESSION]
* @uses session_id()
* @uses Wakka::GetConfigValue()
* @uses Config::$num_breadcrumb_nodes
* @uses Config::$enable_breadcrumbs
*/
function AddBreadcrumb($page)
{
if (0 != $this->GetConfigValue('enable_breadcrumbs')) {
if (isset($_SESSION['breadcrumbs'])) {
$q = new SplQueue();
$q->unserialize($_SESSION['breadcrumbs']);
if ($page != $q->top()) {
while ($q->count() >= $this->GetConfigValue('num_breadcrumb_nodes')) {
$q->dequeue();
}
$q->enqueue($page);
$_SESSION['breadcrumbs'] = $q->serialize();
}
} else {
if (isset($_SESSION['user'])) {
$q = new SplQueue();
$q->enqueue($page);
$_SESSION['breadcrumbs'] = $q->serialize();
}
}
}
}