PermissionsViewHelper.php

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<?php
namespace TYPO3\CMS\Beuser\ViewHelpers;

/*
 * 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!
 */

use TYPO3\CMS\Extbase\Utility\LocalizationUtility;
use TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3\CMS\Fluid\Core\ViewHelper\Facets\CompilableInterface;

class PermissionsViewHelper extends AbstractViewHelper implements CompilableInterface
{
    protected static $permissionLabels = array();

    public function render($permission, $scope, $pageId)
    {
        return static::renderStatic($this->arguments, $this->buildRenderChildrenClosure(), $this->renderingContext);
    }

    public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
    {
        $masks = array(1, 16, 2, 4, 8);

        if (empty(static::$permissionLabels)) {
            foreach ($masks as $mask) {
                static::$permissionLabels[$mask] = LocalizationUtility::translate(
                    'LLL:EXT:beuser/Resources/Private/Language/locallang_mod_permission.xlf:' . $mask,
                    'be_user'
                );
            }
        }

        $icon = '';
        foreach ($masks as $mask) {
            if ($arguments['permission'] & $mask) {
                $permissionClass = 'fa-check text-success';
                $mode = 'delete';
            } else {
                $permissionClass = 'fa-times text-danger';
                $mode = 'add';
            }
            $icon .= '<span style="cursor:pointer"'
                . ' title="' . htmlspecialchars(static::$permissionLabels[$mask]) . '"'
                . ' data-page="' . $arguments['pageId'] . '"'
                . ' data-permissions="' . $arguments['permission'] . '"'
                . ' data-who="' . $arguments['scope'] . '"'
                . ' data-bits="' . $mask . '"'
                . ' data-mode="' . $mode . '"'
                . ' class="t3-icon change-permission fa ' . $permissionClass . '"></span>';
        }

        return '<span id="' . $arguments['pageId'] . '_' . $arguments['scope'] . '">' . $icon . '</span>';
    }
}