NamedTree.class.php

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00001 <?php
00002 /****************************************************************************
00003  *   Copyright (C) 2005-2007 by Konstantin V. Arkhipov, Anton E. Lebedevich *
00004  *                                                                          *
00005  *   This program is free software; you can redistribute it and/or modify   *
00006  *   it under the terms of the GNU Lesser General Public License as         *
00007  *   published by the Free Software Foundation; either version 3 of the     *
00008  *   License, or (at your option) any later version.                        *
00009  *                                                                          *
00010  ****************************************************************************/
00011 
00017     abstract class NamedTree extends NamedObject
00018     {
00019         private $parent = null;
00020         
00024         public function getParent()
00025         {
00026             return $this->parent;
00027         }
00028         
00032         public function setParent(NamedTree $parent)
00033         {
00034             Assert::brothers($this, $parent);
00035             
00036             $this->parent = $parent;
00037             
00038             return $this;
00039         }
00040         
00044         public function dropParent()
00045         {
00046             $this->parent = null;
00047             
00048             return $this;
00049         }
00050         
00054         public function getRoot()
00055         {
00056             $current = $this;
00057             $next = $this;
00058             
00059             while ($next) {
00060                 $current = $next;
00061                 $next = $next->getParent();
00062             }
00063             
00064             return $current;
00065         }
00066         
00067         public function toString($delimiter = ' :: ')
00068         {
00069             $name = array($this->getName());
00070             
00071             $parent = $this;
00072             
00073             while ($parent = $parent->getParent())
00074                 $name[] = $parent->getName();
00075             
00076             $name = array_reverse($name);
00077             
00078             return implode($delimiter, $name);
00079         }
00080     }
00081 ?>