MenuViewHelper.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\Template\ModuleTemplate;
use ‪TYPO3\CMS\Backend\ViewHelpers\ModuleLayoutViewHelper;
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 ‪MenuViewHelper extends AbstractViewHelper
{
    use CompileWithRenderStatic;
 
    public function ‪initializeArguments()
    {
        $this->registerArgument('identifier', 'string', 'Identifier of the menu', true);
    }
 
    public static function ‪renderStatic(
        array $arguments,
        \Closure $renderChildrenClosure,
        RenderingContextInterface $renderingContext
    ) {
        $viewHelperVariableContainer = $renderingContext->getViewHelperVariableContainer();
        ‪self::ensureProperNesting($viewHelperVariableContainer);
 
        $moduleTemplate = $viewHelperVariableContainer->get(ModuleLayoutViewHelper::class, ModuleTemplate::class);
        $menu = $moduleTemplate->getDocHeaderComponent()->getMenuRegistry()->makeMenu();
        $menu->setIdentifier($arguments['identifier']);
 
        $viewHelperVariableContainer->add(ModuleLayoutViewHelper::class, Menu::class, $menu);
        $renderChildrenClosure();
        $moduleTemplate->getDocHeaderComponent()->getMenuRegistry()->addMenu($menu);
        $viewHelperVariableContainer->remove(ModuleLayoutViewHelper::class, Menu::class);
    }
 
    private static function ‪ensureProperNesting(ViewHelperVariableContainer $viewHelperVariableContainer): void
    {
        if (!$viewHelperVariableContainer->exists(ModuleLayoutViewHelper::class, ModuleTemplate::class)) {
            throw new Exception(sprintf('%s must be nested in <f.be.moduleLayout> ViewHelper', self::class), 1531235715);
        }
        if ($viewHelperVariableContainer->exists(ModuleLayoutViewHelper::class, Menu::class)) {
            throw new Exception(sprintf('%s can not be nested in <f.be.moduleLayout.menu> ViewHelper', self::class), 1531235777);
        }
    }
}