56 lines
1.9 KiB
PHP
56 lines
1.9 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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namespace TYPO3\CMS\Fluid\ViewHelpers\Asset;
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use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Directive;
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use TYPO3\CMS\Core\Security\ContentSecurityPolicy\DirectiveHashCollection;
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use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
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/**
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* ViewHelper for inline style attributes that need CSP hash coverage via `style-src-attr`.
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*
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* When `csp` is true (default), the style value is hashed and registered with the
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* HashCollection so that the CSP header includes the corresponding `sha256-...` hash.
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*
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* Usage:
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* ```
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* <div style="{f:asset.styleAttr(value: 'color: green; text-decoration: underline;', csp: true)}">...</div>
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* ```
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*
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* @see https://docs.typo3.org/permalink/t3viewhelper:typo3-fluid-asset-styleattr
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*/
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final class StyleAttrViewHelper extends AbstractViewHelper
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{
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public function __construct(private readonly DirectiveHashCollection $directiveHashCollection) {}
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public function initializeArguments(): void
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{
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$this->registerArgument('value', 'string', 'The inline style value (e.g. "color: green; text-decoration: underline;")', true);
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$this->registerArgument('csp', 'bool', 'Whether to collect a CSP hash for this style value', false, true);
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}
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public function render(): string
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{
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$value = trim($this->arguments['value'] ?? $this->renderChildren());
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if ($this->arguments['csp'] ?? true) {
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$this->directiveHashCollection->addInlineHash(Directive::StyleSrcAttr, $value);
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}
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return $value;
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}
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}
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