class.ilAssQuestionAuthoringFormGUI.php

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<?php

class ilAssQuestionAuthoringFormGUI extends ilPropertyFormGUI
{
    public function __construct()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */
        $this->lng = $DIC['lng'];

        parent::__construct();
    }

    public function addGenericAssessmentQuestionCommandButtons(assQuestion $questionOBJ): void
    {
        if (!$questionOBJ->getSelfAssessmentEditingMode()) {
            $this->addCommandButton("saveReturn", $this->lng->txt("save_return"));
        }

        $this->addCommandButton("save", $this->lng->txt("save"));
    }

    public function replaceFormItemByPostVar(ilFormPropertyGUI $replacingItem): bool
    {
        $itemWasReplaced = false;

        $preparedItems = array();

        foreach ($this->getItems() as $dodgingItem) {
            /* @var ilFormPropertyGUI $dodgingItem */

            if ($dodgingItem->getPostVar() == $replacingItem->getPostVar()) {
                $preparedItems[] = $replacingItem;
                $itemWasReplaced = true;
                continue;
            }

            $preparedItems[] = $dodgingItem;
        }

        $this->setItems($preparedItems);

        return $itemWasReplaced;
    }
}