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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2011 Bharat Mediratta
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class Breadcrumb_Core {
public $title;
public $url;
public $id;
public $first;
public $last;
static function build_from_item($item) {
$breadcrumbs = array();
foreach ($item->parents() as $element) {
$breadcrumbs[] = new Breadcrumb($element->title, $element->url(), $element->id);
}
if (!empty($breadcrumbs)) {
$breadcrumbs[] = new Breadcrumb($item->title, $item->url(), $item->id);
}
return self::generate_show_query_strings($breadcrumbs);
}
/**
* This static function takes a list (variable arguments) of Breadcrumbs and builds a dynamic
* breadcrumb list. Used to create a breadcrumb for dynamic albums. Will really be useful
* for the display context change.
*/
static function build_from_list() {
return self::generate_show_query_strings(func_get_args());
}
private static function generate_show_query_strings($breadcrumbs) {
if (!empty($breadcrumbs)) {
end($breadcrumbs)->last = true;;
while ($breadcrumb = current($breadcrumbs)) {
if (isset($last_id) && $last_id > 0) {
$query = parse_url($breadcrumb->url, PHP_URL_QUERY);
$breadcrumb->url = $breadcrumb->url . ($query ? "&" : "?") . "show={$last_id}";
}
$last_id = $breadcrumb->id;
$breadcrumb = prev($breadcrumbs);
}
$breadcrumbs[0]->first = true;
}
return $breadcrumbs;
}
public function __construct($title, $url, $id=0) {
$this->title = $title;
$this->url = $url;
$this->id = $id;
$this->first = false;
$this->last = false;
}
}
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