HtmlViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\ViewHelpers\Format;

/*                                                                        *
 * This script is part of the TYPO3 project - inspiring people to share!  *
 *                                                                        *
 * TYPO3 is free software; you can redistribute it and/or modify it under *
 * the terms of the GNU General Public License version 2 as published by  *
 * the Free Software Foundation.                                          *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General      *
 * Public License for more details.                                       *
 *                                                                        */
class HtmlViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper {

    protected $contentObject;

    protected $tsfeBackup;

    protected $escapingInterceptorEnabled = FALSE;

    protected $configurationManager;

    public function injectConfigurationManager(\TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface $configurationManager) {
        $this->configurationManager = $configurationManager;
        $this->contentObject = $this->configurationManager->getContentObject();
    }

    public function render($parseFuncTSPath = 'lib.parseFunc_RTE') {
        if (TYPO3_MODE === 'BE') {
            $this->simulateFrontendEnvironment();
        }
        $value = $this->renderChildren();
        $content = $this->contentObject->parseFunc($value, array(), '< ' . $parseFuncTSPath);
        if (TYPO3_MODE === 'BE') {
            $this->resetFrontendEnvironment();
        }
        return $content;
    }

    protected function simulateFrontendEnvironment() {
        $this->tsfeBackup = isset($GLOBALS['TSFE']) ? $GLOBALS['TSFE'] : NULL;
        $GLOBALS['TSFE'] = new \stdClass();
        $GLOBALS['TSFE']->tmpl = new \stdClass();
        $GLOBALS['TSFE']->tmpl->setup = $this->configurationManager->getConfiguration(\TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface::CONFIGURATION_TYPE_FULL_TYPOSCRIPT);
    }

    protected function resetFrontendEnvironment() {
        $GLOBALS['TSFE'] = $this->tsfeBackup;
    }
}