AbstractTree.class.php

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<?php
#
#  DaCMS Content Management System
#  Copyright (C) 2002 Jan Dankert, jandankert@jandankert.de
#
#  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#

class AbstractTree
{
     var $elements     = array();
     
     var $tempElements = array();
     var $userIsAdmin  = false;
     
     var $autoOpen     = array(0,1);
     
     var $maxId;
     
     // Konstruktor
     function AbstractTree()
     {
          // Feststellen, ob der angemeldete Benutzer ein Administrator ist
          $user = Session::getUser();
          $this->userIsAdmin = $user->isAdmin;

          // Wurzel-Element laden
          $this->root();
          $this->elements[0]  = $this->tempElements[0];
          $this->tempElements = array();
          $this->maxId = 0;
          
          foreach( $this->autoOpen as $openId )
               $this->open($openId);
     }

     function open( $elementId )
     {
          $funcName = $this->elements[$elementId]->type;
          if   ( empty($funcName) )
               return;
               
          $this->$funcName( $this->elements[$elementId]->internalId );

          // Wenn keine Unterelemente gefunden, dann die ?ffnen-Funktion deaktivieren
          if   ( count( $this->tempElements ) == 0 )
               $this->elements[$elementId]->type = '';

          foreach( $this->tempElements as $treeElement )
          {
               $this->maxId++;
               $this->elements[$elementId]->subElementIds[] = $this->maxId;
               $this->elements[$this->maxId] = $treeElement;
          }
          
          if   ( count($this->tempElements)==1 )
          {
               $this->tempElements = array();
               $this->open($this->maxId);
          }

          $this->tempElements = array();
     }


     function close( $elementId )
     {
          $this->elements[$elementId]->subElementIds = array();
     }    


     function addTreeElement( $treeElement )
     {
          $this->tempElements[] = $treeElement;
     }


}

?>