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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* 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!
*/
namespace TYPO3\CMS\Backend\Form\Behavior;
use TYPO3\CMS\Core\Utility\GeneralUtility;
trait OnFieldChangeTrait
{
/**
* @param list<OnFieldChangeInterface> $items `fieldChangeFunc` items
* @return array<int, array>
*/
protected function getOnFieldChangeItems(array $items): array
{
if (empty($items)) {
return [];
}
return array_map(
static function (OnFieldChangeInterface $item) {
return $item->toArray();
},
// omitting array keys
array_values($items)
);
}
/**
* @param string $event target client event, either `change` or `click`
* @param list<OnFieldChangeInterface> $items `fieldChangeFunc` items
* @return array<string, string> HTML attrs, not encoded - consumers MUST encode with `htmlspecialchars`
*/
protected function getOnFieldChangeAttrs(string $event, array $items): array
{
if (empty($items)) {
return [];
}
$onFieldChangeItems = $this->getOnFieldChangeItems($items);
return [
'data-formengine-field-change-event' => $event,
'data-formengine-field-change-items' => GeneralUtility::jsonEncodeForHtmlAttribute($onFieldChangeItems, false),
];
}
/**
* Forwards URL query params for `LinkBrowserController`
* @param list<OnFieldChangeInterface> $items `fieldChangeFunc` items
* @return array{fieldChangeFunc: array<int, array>, fieldChangeFuncHash: string} relevant URL query params for `LinkBrowserController`
*/
protected function forwardOnFieldChangeQueryParams(array $items): array
{
$func = $this->getOnFieldChangeItems($items);
return [
'fieldChangeFunc' => $func,
'fieldChangeFuncHash' => GeneralUtility::hmac(serialize($func), 'backend-link-browser'),
];
}
}