FormAdapterGUI.php

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<?php

declare(strict_types=1);

namespace ILIAS\BookingManager\Service\Form;

use ILIAS\Repository\Form\FormAdapterGUI as RepositoryFormAdapterGUI;
use ILIAS\UI\Implementation\Component\Input\Field\SwitchableGroup;

class FormAdapterGUI extends RepositoryFormAdapterGUI
{
    public function disabledGroup($disabled = true): self
    {
        if ($disabled && ($field = $this->getLastField()) && $field instanceof SwitchableGroup) {
            $field = $field->withDisabledGroupSwitch(true);
            $this->disable[$this->last_key] = true;
            $this->replaceLastField($field);
        }
        return $this;
    }
}