FailsafeView.php

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<?php
namespace TYPO3\CMS\Install\View;

use TYPO3\CMS\Core\Utility\GeneralUtility;

class FailsafeView extends \TYPO3\CMS\Extbase\Mvc\View\AbstractView {

    protected $templatePathAndFileName;

    protected $layoutRootPath;

    protected $partialRootPath;

    protected $objectManager = NULL;

    public function __construct() {
        $this->objectManager = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Extbase\\Object\\ObjectManager');
    }

    public function render($alert = FALSE) {
        if ($alert) {
            return $this->renderAlertStatus();
        }
        $realView = $this->objectManager->get('TYPO3\\CMS\\Install\\View\\StandaloneView');
        $realView->assignMultiple($this->variables);
        $realView->setTemplatePathAndFilename($this->templatePathAndFileName);
        $realView->setLayoutRootPath($this->layoutRootPath);
        $realView->setPartialRootPath($this->partialRootPath);

        return $realView->render();
    }

    protected function renderAlertStatus() {
        $templatePath = preg_replace('#\.html$#', '.phtml', $this->templatePathAndFileName);
        ob_start();
        include $templatePath;
        $renderedTemplate = ob_get_contents();
        ob_end_clean();

        return $renderedTemplate;
    }

    public function setTemplatePathAndFileName($templatePathAndFileName) {
        $this->templatePathAndFileName = $templatePathAndFileName;
    }

    public function setLayoutRootPath($layoutRootPath) {
        $this->layoutRootPath = $layoutRootPath;
    }

    public function setPartialRootPath($partialRootPath) {
        $this->partialRootPath = $partialRootPath;
    }
}