FormState.php

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<?php
declare(strict_types = 1);
namespace TYPO3\CMS\Form\Domain\Runtime;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It originated from the Neos.Form package (www.neos.io)
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Core\Utility\ArrayUtility;

class FormState
{

    const NOPAGE = -1;

    protected $lastDisplayedPageIndex = self::NOPAGE;

    protected $formValues = [];

    public function isFormSubmitted(): bool
    {
        return $this->lastDisplayedPageIndex !== self::NOPAGE;
    }

    public function getLastDisplayedPageIndex(): int
    {
        return $this->lastDisplayedPageIndex;
    }

    public function setLastDisplayedPageIndex(int $lastDisplayedPageIndex)
    {
        $this->lastDisplayedPageIndex = $lastDisplayedPageIndex;
    }

    public function getFormValues(): array
    {
        return $this->formValues;
    }

    public function setFormValue(string $propertyPath, $value)
    {
        $this->formValues = ArrayUtility::setValueByPath(
            $this->formValues,
            $propertyPath,
            $value,
            '.'
        );
    }

    public function getFormValue(string $propertyPath)
    {
        try {
            return ArrayUtility::getValueByPath($this->formValues, $propertyPath, '.');
        } catch (\RuntimeException $exception) {
            return null;
        }
    }
}