class.ilAssHtmlUserSolutionPurifier.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Html/classes/class.ilHtmlPurifierAbstractLibWrapper.php';

class ilAssHtmlUserSolutionPurifier extends ilHtmlPurifierAbstractLibWrapper
{
        const TYPE = 'qpl_usersolution';

        protected function getPurifierConfigInstance()
        {
                $config = HTMLPurifier_Config::createDefault();
                $config->set('HTML.DefinitionID', 'ilias forum post');
                $config->set('HTML.DefinitionRev', 1);
                $config->set('Cache.SerializerPath', ilHtmlPurifierAbstractLibWrapper::_getCacheDirectory());
                $config->set('HTML.Doctype', 'XHTML 1.0 Strict');
                $config->set('HTML.AllowedElements', $this->getAllowedElements());
                $config->set('HTML.ForbiddenAttributes', 'div@style');

                if ($def = $config->maybeGetRawHTMLDefinition()) {
                        $def->addAttribute('a', 'target', 'Enum#_blank,_self,_target,_top');
                }

                return $config;
        }
        
        private function getAllowedElements()
        {
                $allowedElements = $this->getElementsUsedForAdvancedEditing();
                
                $allowedElements = $this->makeElementListTinyMceCompliant($allowedElements);
                $allowedElements = $this->removeUnsupportedElements($allowedElements);
                
                return $allowedElements;
        }
        
        private function getElementsUsedForAdvancedEditing()
        {
                include_once 'Services/AdvancedEditing/classes/class.ilObjAdvancedEditing.php';
                return ilObjAdvancedEditing::_getUsedHTMLTags(self::TYPE);
        }
}