<?php
/* Reminder: always indent with 4 spaces (no tabs). */
// +---------------------------------------------------------------------------+
// | Copyright (c) 2008, Demian Turner                                         |
// | All rights reserved.                                                      |
// |                                                                           |
// | Redistribution and use in source and binary forms, with or without        |
// | modification, are permitted provided that the following conditions        |
// | are met:                                                                  |
// |                                                                           |
// | o Redistributions of source code must retain the above copyright          |
// |   notice, this list of conditions and the following disclaimer.           |
// | o Redistributions in binary form must reproduce the above copyright       |
// |   notice, this list of conditions and the following disclaimer in the     |
// |   documentation and/or other materials provided with the distribution.    |
// | o The names of the authors may not be used to endorse or promote          |
// |   products derived from this software without specific prior written      |
// |   permission.                                                             |
// |                                                                           |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT         |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR     |
// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT      |
// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,     |
// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT          |
// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,     |
// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY     |
// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT       |
// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE     |
// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.      |
// |                                                                           |
// +---------------------------------------------------------------------------+
// | Seagull 0.6                                                               |
// +---------------------------------------------------------------------------+
// | Registry.php                                                         |
// +---------------------------------------------------------------------------+
// | Author:   Demian Turner <demian@phpkitchen.com>                           |
// +---------------------------------------------------------------------------+
// $Id$

/**
 * Generic data storage object, referred to as $input.
 *
 * @package SGL
 * @author  Demian Turner <demian@phpkitchen.com>
 * @version $Revision: 1.49 $
 */
class SGL_Registry
{
    var $aProps = array();

    function &singleton()
    {
        static $instance;
        if (!isset($instance)) {
            $class = __CLASS__;
            $instance = new $class();
        }
        return $instance;
    }

    function &get($key)
    {
        if (array_key_exists($key, $this->aProps)) {
            $ret =  $this->aProps[$key];
        } else {
            $ret = null;
        }
        return $ret;
    }

    /**
     * Add or modify registry data.
     *
     * @param string $key
     * @param mixed $value
     */
    function set($key, &$value)
    {
        $this->aProps[$key] = &$value;
    }

    function exists($key) {
        return array_key_exists($key, $this->aProps);
    }

    function getRequest()
    {
        return $this->get('request');
    }

    function setRequest($req)
    {
        $this->set('request', $req);
    }

    function getCurrentUrl()
    {
        return $this->get('currentUrl');
    }

    function setCurrentUrl($url)
    {
        $this->set('currentUrl', $url);
    }

    function setFilters($aFilters)
    {
        $this->set('aFilters', $aFilters);
    }

    function getFilters()
    {
        return $this->get('aFilters');
    }

    function getConfig()
    {
        $c = &SGL_Config::singleton();
        return $c->getAll();
    }

    /**
     * Copies properties from source object to destination object.
     *
     * @access  public
     * @static
     * @param   object  $dest   typically the ouput object
     * @return  void
     */
    function aggregate(& $dest)
    {
        SGL::logMessage(null, PEAR_LOG_DEBUG);
        $aObjAttrs = get_object_vars($this);
        if (is_array($aObjAttrs)) {
            foreach ($aObjAttrs as $objAttrName => $objAttrValue) {
                $dest->$objAttrName = $objAttrValue;
            }
            foreach ($dest->aProps as $k => $obj) {
                $dest->$k = $obj;
            }
            unset($dest->aProps);
        }
    }
}
?>