class.ilLanguageDetectorFactory.php

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<?php
/* Copyright (c) 1998-2015 ILIAS open source, Extended GPL, see docs/LICENSE */
 
class ilLanguageDetectorFactory
{
        const DEFAULT_DETECTOR      = 1;
        const HTTP_REQUEST_DETECTOR = 2;
 
        protected $client_ini;
 
        protected $request_information = array();
 
        protected $settings;
 
        public function __construct()
        {
                global $ilClientIniFile, $ilSetting;
 
                $this->client_ini          = $ilClientIniFile;
                $this->request_information = $_SERVER;
                $this->settings            = $ilSetting;
        }
 
        public function getValidInstances()
        {
                $detectors = array(
                        $this->createDetectorByType(self::DEFAULT_DETECTOR)
                );
 
                if(
                        $this->settings->get('lang_detection') &&
                        ilContext::usesHTTP()
                )
                {
                        $detectors[] = $this->createDetectorByType(self::HTTP_REQUEST_DETECTOR);
                }
                
                return $detectors;
        }
 
        public function createDetectorByType($type)
        {
                switch($type)
                {
                        case self::HTTP_REQUEST_DETECTOR:
                                require_once 'Services/Language/classes/class.ilHttpRequestsLanguageDetector.php';
                                return new ilHttpRequestsLanguageDetector($this->request_information['HTTP_ACCEPT_LANGUAGE']);
 
                        case self::DEFAULT_DETECTOR:
                                require_once 'Services/Language/classes/class.ilDefaultLanguageDetector.php';
                                return new ilDefaultLanguageDetector($this->client_ini);
                }
 
                require_once 'Services/Language/exceptions/class.ilLanguageException.php';
                throw new ilLanguageException(__METHOD__ . sprintf('Cannot create language detector instance for type %s!', $type));
        }
}