class.ilOpenIdProviders.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once './Services/OpenId/classes/class.ilOpenIdProvider.php';

class ilOpenIdProviders
{
        private static $instance = null;
        
        private $providers = array();

        protected function __construct()
        {
                $this->read();
        }
        
        public static function getInstance()
        {
                if(self::$instance)
                {
                        return self::$instance;
                }
                return self::$instance = new ilOpenIdProviders();
        }
        
        public function getProvider()
        {
                return (array) $this->providers;
        }
        
        public function getProviderById($a_provider_id)
        {
                foreach($this->getProvider() as $provider)
                {
                        if($provider->getId() == $a_provider_id)
                        {
                                return $provider;
                        }
                }
                throw new UnexpectedValueException();
        }
        
        public function getProviderSelection()
        {
                global $lng;
                
                $options[0] = $lng->txt('select_one');
                foreach($this->getProvider() as $provider)
                {
                        $options[$provider->getId()] = $provider->getName();
                }
                return $options;
        }

        public function getSelectedProvider()
        {
                include_once './Services/OpenId/classes/class.ilOpenIdSettings.php';
                if(count($this->getProvider()) != 1 or !ilOpenIdSettings::getInstance()->forcedProviderSelection())
                {
                        return 0;
                }

                foreach($this->getProvider() as $pro)
                {
                        return $pro->getId();
                }
                return 0;
        }
        
        private function read()
        {
                global $ilDB;
                
                $query = "SELECT provider_id FROM openid_provider ORDER BY name ";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
                {
                        $this->providers[] = new ilOpenIdProvider($row['provider_id']);
                }
                return true;
        }
}
?>