GalleryBreadCrumb - Breadcrumbs for albums

<?php
/**
 * GalleryBreadCrumb
 *
 * Copyright 2010 by Shaun McCormick <[email protected]>
 * GalleryBreadCrumb snippet by Patrick Nijkamp (aka b03tz) <[email protected]>
 *
 * Gallery is free software; you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * Gallery is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Gallery; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * @package gallery
 */
/**
 * Shows a gallery breadcrumb trail of albums
 * 
 * Parameters:
 * separator - Separator to use when outputing trail (Default: " - ". album1 - album2 - album3
 * prefix - A prefix to use when at least 1 album has been found. (Default: "")
 *          You can use this to combine this snippet with the original BreadCrumbs :-)
 * 
 * @package gallery
 */
$gallery = $modx->getService('gallery','Gallery',$modx->getOption('gallery.core_path',null,$modx->getOption('core_path').'components/gallery/').'model/gallery/',$scriptProperties);
if (!($gallery instanceof Gallery)) return '';

$separator = $modx->getOption('separator', $scriptProperties, ' - ');
$prefix = $modx->getOption('prefix', $scriptProperties, '');
$returnValue = '';

if (isset($_GET['galAlbum'])) {
	$condition = true;
	$output = array();
	$currentAlbum = (int) $_GET['galAlbum'];
	while($condition == true) {
		$album = $modx->getObject('galAlbum', $currentAlbum);
		if ($album->get('parent') != 0) {
			$currentAlbum = $album->get('parent');
			$output[] = $album->get('name');
		} else {
			$output[] = $album->get('name');
			$condition = false;
			break;	
		}
	}
	
	$output = array_reverse($output);
	
	foreach($output as $title) {
		$returnValue .= $title.$separator;	
	}	
}

if ($returnValue != '') {
	$returnValue = $prefix.$returnValue;	
}

$returnValue = substr($returnValue, 0, -strlen($separator));

return $returnValue;