class.exObjQuestionPoolGUI.php

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<?php

class exObjQuestionPoolGUI
{
    public function executeCommand()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        switch ($DIC->ctrl()->getNextClass($this)) {
            case $DIC->question()->service()->fetchNextAuthoringCommandClass($DIC->ctrl()->getNextClass()):

                $questionId = 0; // Fetch questionId from Request Parameters
                $backLink = ''; // Initialise with Back Link to Consumers Back-Landing Page

                $questionInstance = $DIC->question()->getQuestionInstance($questionId);
                $questionAuthoringGUI = $DIC->question()->getAuthoringCommandInstance($questionInstance);

                $questionAuthoringGUI->setBackLink($backLink);

                $DIC->ctrl()->forwardCommand($questionAuthoringGUI);
        }
    }

    public function showQuestions()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        $parentObjectId = 0; // init with question pool object id

        $questionDataArray = $DIC->question()->getQuestionDataArray($parentObjectId);

        $tableGUI = new exQuestionsTableGUI($this, 'showQuestions', '');
        $tableGUI->setData($questionDataArray);

        $tableHTML = $tableGUI->getHTML(); // render table
    }

    public function importQuestions()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        $parentObjectId = 0; // init with question pool object id

        $qtiItems = array(); /* @var ilQTIItem[] $qtiItems */

        foreach ($qtiItems as $qtiItem) {
            $questionType = $DIC->question()->service()->determineQuestionTypeByQtiItem($qtiItem);
            $questionInstance = $DIC->question()->getEmptyQuestionInstance($questionType);

            $questionInstance->fromQtiItem($qtiItem);
            $questionInstance->setParentId($parentObjectId);
            $questionInstance->save();
        }
    }

    public function exportQuestions()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        $parentObjectId = 0; // init with question pool object id

        $questions = $DIC->question()->getQuestionInstances($parentObjectId);

        $qtiXML = '';

        foreach ($questions as $questionInstance) {
            $qtiXML .= $questionInstance->toQtiXML();
        }
    }

    public function deleteQuestion()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        $questionId = 0; // init from GET parameters

        $questionInstance = $DIC->question()->getQuestionInstance($questionId);
        $questionInstance->delete();
    }
}