MenuItemViewHelper.php

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<?php
declare(strict_types = 1);
namespace ‪TYPO3\CMS\Backend\ViewHelpers\ModuleLayout;
 
/*
 * 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\Backend\Template\Components\Menu\Menu;
use ‪TYPO3\CMS\Backend\ViewHelpers\ModuleLayoutViewHelper;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
use TYPO3Fluid\Fluid\Core\ViewHelper\ViewHelperVariableContainer;
use TYPO3Fluid\Fluid\View\Exception;
 
class ‪MenuItemViewHelper extends AbstractViewHelper
{
    use CompileWithRenderStatic;
 
    public function ‪initializeArguments()
    {
        parent::initializeArguments();
        $this->registerArgument('label', 'string', 'Label of the menu item', true);
        $this->registerArgument('uri', 'string', 'Action uri', true);
    }
 
    public static function ‪renderStatic(
        array $arguments,
        \Closure $renderChildrenClosure,
        RenderingContextInterface $renderingContext
    ) {
        $viewHelperVariableContainer = $renderingContext->getViewHelperVariableContainer();
        ‪self::ensureProperNesting($viewHelperVariableContainer);
 
        $menu = $viewHelperVariableContainer->get(ModuleLayoutViewHelper::class, Menu::class);
        $menuItem = $menu->makeMenuItem();
        $menuItem->setTitle($arguments['label']);
        $menuItem->setHref($arguments['uri']);
        $menuItem->setActive(self::isCurrentUri($arguments['uri']));
        $menu->addMenuItem($menuItem);
    }
 
    private static function ‪ensureProperNesting(ViewHelperVariableContainer $viewHelperVariableContainer): void
    {
        if (!$viewHelperVariableContainer->exists(ModuleLayoutViewHelper::class, Menu::class)) {
            throw new Exception(sprintf('%s must be nested in <f.be.moduleLayout.menu> ViewHelper', self::class), 1531235592);
        }
    }
 
    protected static function ‪isCurrentUri(string $uri): bool
    {
        return GeneralUtility::getIndpEnv('REQUEST_URI') === $uri;
    }
}