class.ilScormLP.php

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<?php

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

include_once "Services/Object/classes/class.ilObjectLP.php";

class ilScormLP extends ilObjectLP
{
    protected $precondition_cache = null;

    public static function getDefaultModes($a_lp_active)
    {
        return array(
            ilLPObjSettings::LP_MODE_DEACTIVATED,
            ilLPObjSettings::LP_MODE_SCORM_PACKAGE
        );
    }
    
    public function getDefaultMode()
    {
        return ilLPObjSettings::LP_MODE_DEACTIVATED;
    }
    
    public function getValidModes()
    {
        include_once "./Modules/ScormAicc/classes/class.ilObjSAHSLearningModule.php";
        $subtype = ilObjSAHSLearningModule::_lookupSubType($this->obj_id);
        if ($subtype != "scorm2004") {
            if ($this->checkSCORMPreconditions()) {
                return array(ilLPObjSettings::LP_MODE_SCORM);
            }
            
            include_once "Services/Tracking/classes/collection/class.ilLPCollectionOfSCOs.php";
            $collection = new ilLPCollectionOfSCOs($this->obj_id, ilLPObjSettings::LP_MODE_SCORM);
            if (sizeof($collection->getPossibleItems())) {
                return array(ilLPObjSettings::LP_MODE_DEACTIVATED,
                    ilLPObjSettings::LP_MODE_SCORM);
            }
            return array(ilLPObjSettings::LP_MODE_DEACTIVATED);
        } else {
            if ($this->checkSCORMPreconditions()) {
                return array(ilLPObjSettings::LP_MODE_SCORM,
                    ilLPObjSettings::LP_MODE_SCORM_PACKAGE);
            }
            
            include_once "Services/Tracking/classes/collection/class.ilLPCollectionOfSCOs.php";
            $collection = new ilLPCollectionOfSCOs($this->obj_id, ilLPObjSettings::LP_MODE_SCORM);
            if (sizeof($collection->getPossibleItems())) {
                return array(ilLPObjSettings::LP_MODE_DEACTIVATED,
                    ilLPObjSettings::LP_MODE_SCORM_PACKAGE,
                    ilLPObjSettings::LP_MODE_SCORM);
            }
            
            return array(ilLPObjSettings::LP_MODE_DEACTIVATED,
                ilLPObjSettings::LP_MODE_SCORM_PACKAGE);
        }
    }

    public function getCurrentMode()
    {
        if ($this->checkSCORMPreconditions()) {
            return ilLPObjSettings::LP_MODE_SCORM;
        }
        return parent::getCurrentMode();
    }
    
    protected function checkSCORMPreconditions()
    {
        if (!is_null($this->precondition_cache)) {
            return $this->precondition_cache;
        }

        $this->precondition_cache =
            ilConditionHandler::getNumberOfConditionsOfTrigger('sahs', $this->obj_id) > 0 ?
                true :
                false;
        return $this->precondition_cache;
    }
    
    protected static function isLPMember(array &$a_res, $a_usr_id, $a_obj_ids)
    {
        global $DIC;
        $ilDB = $DIC['ilDB'];
        
        // subtype
        $types = array();
        $set = $ilDB->query("SELECT id,c_type" .
            " FROM sahs_lm" .
            " WHERE " . $ilDB->in("id", $a_obj_ids, "", "integer"));
        while ($row = $ilDB->fetchAssoc($set)) {
            $types[$row["c_type"]][] = $row["id"];
        }
        
        // 2004
        if (isset($types["scorm2004"])) {
            $set = $ilDB->query("SELECT obj_id" .
                " FROM sahs_user" .
                " WHERE " . $ilDB->in("obj_id", $types["scorm2004"], "", "integer") .
                " AND user_id = " . $ilDB->quote($a_usr_id, "integer"));
            while ($row = $ilDB->fetchAssoc($set)) {
                $a_res[$row["obj_id"]] = true;
            }
        }
        
        // 1.2
        if (isset($types["scorm"])) {
            $set = $ilDB->query("SELECT obj_id" .
                " FROM scorm_tracking" .
                " WHERE " . $ilDB->in("obj_id", $types["scorm"], "", "integer") .
                " AND user_id = " . $ilDB->quote($a_usr_id, "integer") .
                " AND lvalue = " . $ilDB->quote("cmi.core.lesson_status", "text"));
            while ($row = $ilDB->fetchAssoc($set)) {
                $a_res[$row["obj_id"]] = true;
            }
        }
    }
    
    public function getMailTemplateId()
    {
        include_once './Modules/ScormAicc/classes/class.ilScormMailTemplateLPContext.php';
        return ilScormMailTemplateLPContext::ID;
    }
}