# FilterChain.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2005-2007 by 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     final class FilterChain implements Filtrator
    00018     {
    00019         private $chain = array();
    00020
    00024         public static function create()
    00025         {
    00026             return new self;
    00027         }
    00028
    00032         public function add(Filtrator $filter)
    00033         {
    00034             $this->chain[] = $filter;
    00035             return $this;
    00036         }
    00037
    00041         public function dropAll()
    00042         {
    00043             $this->chain = array();
    00044             return $this;
    00045         }
    00046
    00047         public function apply($value)
    00048         {
    00049             foreach ($this->chain as $filter)
    00050                 $value = $filter->apply($value);
    00051
    00052             return $value;
    00053         }
    00054     }
    00055 ?>