Subversion-Projekte lars-tiefland.php_share

<?php

/*
        This file is part of ActiveLink PHP XML Package (www.active-link.com).
        Copyright (c) 2002-2004 by Zurab Davitiani

        You can contact the author of this software via E-mail at
        hattrick@mailcan.com

        ActiveLink PHP XML Package is free software; you can redistribute it and/or modify
        it under the terms of the GNU Lesser General Public License as published by
        the Free Software Foundation; either version 2.1 of the License, or
        (at your option) any later version.

        ActiveLink PHP XML Package 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 Lesser General Public License for more details.

        You should have received a copy of the GNU Lesser General Public License
        along with ActiveLink PHP XML Package; if not, write to the Free Software
        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/**
  *     Tree class provides a base for Tree-Branch-Leaf trio
  *     @class          Tree
  *     @package        org.active-link.xml
  *     @author         Zurab Davitiani
  *     @version        0.4.0
  *     @see            Branch, Leaf
  */

class Tree {

        // protected variables
        var $nodes;
        var $id = 0;

        /**
          *     Constructor for the object
          *     @method         Tree
          *     @returns        none
          */
        function Tree() {
                $this->nodes = array();
        }

        /**
          *     Adds given node to the Tree
          *     @method         addNode
          *     @param          mixed id
          *     @param          mixed node
          *     @returns        true if successful, false otherwise
          */
        function addNode($id, $node) {
                $success = true;
                if($id == -1)
                        $this->nodes[] = $node;
                else
                        if(isset($this->nodes[$id]))
                                $success = false;
                        else
                                $this->nodes[$id] = $node;
                return $success;
        }

        /**
          *     Removes all nodes
          *     @method         removeAllNodes
          *     @returns        none
          */
        function removeAllNodes () {
                $this->nodes = array();
        }

        /**
          *     Removes specified node from the Tree
          *     @method         removeNode
          *     @param          mixed id
          *     @returns        true if successful, false otherwise
          */
        function removeNode($id) {
                $success = false;
                if(isset($this->nodes[$id])) {
                        unset($this->nodes[$id]);
                        $success = true;
                }
                return $success;
        }

}

?>