95 lines
2.1 KiB
PHP
95 lines
2.1 KiB
PHP
<?php
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/*
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This file is part of ActiveLink PHP XML Package (www.active-link.com).
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Copyright (c) 2002-2004 by Zurab Davitiani
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You can contact the author of this software via E-mail at
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hattrick@mailcan.com
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ActiveLink PHP XML Package is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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ActiveLink PHP XML Package is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with ActiveLink PHP XML Package; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* Tree class provides a base for Tree-Branch-Leaf trio
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* @class Tree
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* @package org.active-link.xml
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* @author Zurab Davitiani
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* @version 0.4.0
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* @see Branch, Leaf
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*/
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class Tree {
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// protected variables
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var $nodes;
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var $id = 0;
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/**
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* Constructor for the object
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* @method Tree
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* @returns none
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*/
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function Tree() {
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$this->nodes = array();
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}
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/**
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* Adds given node to the Tree
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* @method addNode
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* @param mixed id
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* @param mixed node
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* @returns true if successful, false otherwise
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*/
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function addNode($id, $node) {
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$success = true;
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if($id == -1)
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$this->nodes[] = $node;
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else
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if(isset($this->nodes[$id]))
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$success = false;
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else
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$this->nodes[$id] = $node;
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return $success;
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}
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/**
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* Removes all nodes
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* @method removeAllNodes
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* @returns none
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*/
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function removeAllNodes () {
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$this->nodes = array();
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}
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/**
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* Removes specified node from the Tree
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* @method removeNode
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* @param mixed id
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* @returns true if successful, false otherwise
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*/
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function removeNode($id) {
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$success = false;
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if(isset($this->nodes[$id])) {
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unset($this->nodes[$id]);
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$success = true;
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}
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return $success;
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}
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}
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?>
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