<?php

/*
OneLobby
Copyright (C) 2007 Peter Goodman, Geoffrey Goodman

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 k4Crumb {
	var $_type;
	var $_title;
	var $_parents;
	var $_url;
	
	function k4Crumb($type, $title, $parents = array(), $url = '') {
		$this->_type = $type;
		$this->_title = $title;
		$this->_parents = $parents;
		$this->_url = ($url) ? $url : $_SERVER['REQUEST_URI'];
	}
	
	function isParent(&$crumb) {
		return in_array($crumb->getType(), $this->_parents);
	}
	
	// For template compatibility
	function get($key) {
		$method = 'get' . camelize($key);
		$ret = '';
		
		if (method_exists($this, $method)) {
			$ret = $this->$method();
		}
		
		return $ret;
	}
	
	function getTitle() {
		return $this->_title;
	}
	
	function getType() {
		return $this->_type;
	}
	
	function getUrl() {
		return $this->_url;
	}
}

class k4RootCrumb extends k4Crumb {
	function k4RootCrumb() {
		parent::k4Crumb('index', "Forum Index", array(), k4_url('/'));
	}
	
	function isParent(&$crumb) {
		return FALSE;
	}
}

class k4BreadCrumbs {
	var $_crumbs = array();
	
	function add(&$crumb) {
		for ($i = count($this->_crumbs) - 1; $i >= 0; $i--) {
			if ($crumb->isParent($this->_crumbs[$i])) {
				break;
			}
			
			array_pop($this->_crumbs);
		}
		
		$this->_crumbs[] = &$crumb;
	}
	
	function &getIterator() {
		$it = &new FAArrayIterator($this->_crumbs);
		
		return $it;
	}
}

?>