9.5/_render_children_view_helper_8php_source.html

<?php

namespace ‪TYPO3\CMS\Fluid\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 TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;

use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;


class ‪RenderChildrenViewHelper extends AbstractViewHelper

{

    use CompileWithRenderStatic;


    protected ‪$escapeOutput = false;


    public function ‪initializeArguments()

    {

        $this->registerArgument('arguments', 'array', 'Arguments to assign as template variables', false, []);

    }


    public static function ‪renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)

    {

        $subRenderingContext = static::getWidgetRenderingContext($renderingContext);

        $widgetChildNodes = static::getWidgetChildNodes($renderingContext);

        static::addArgumentsToTemplateVariableContainer($subRenderingContext, $arguments['arguments']);

        ‪$output = $widgetChildNodes->evaluate($subRenderingContext);

        static::removeArgumentsFromTemplateVariableContainer($subRenderingContext, $arguments['arguments']);

        return ‪$output;

    }


    protected static function ‪getWidgetRenderingContext(RenderingContextInterface $renderingContext)

    {

        $subRenderingContext = static::getWidgetContext($renderingContext)->getViewHelperChildNodeRenderingContext();

        if (!$subRenderingContext instanceof \‪TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface) {

            throw new \TYPO3\CMS\Fluid\Core\Widget\Exception\RenderingContextNotFoundException('Rendering Context not found inside Widget. <f:renderChildren> has been used in an AJAX Request, but is only usable in non-ajax mode.', 1284986604);

        }

        return $subRenderingContext;

    }


    protected static function ‪getWidgetChildNodes(RenderingContextInterface $renderingContext)

    {

        return static::getWidgetContext($renderingContext)->getViewHelperChildNodes();

    }


    protected static function ‪getWidgetContext(RenderingContextInterface $renderingContext)

    {

        $request = $renderingContext->getControllerContext()->getRequest();

        if (!$request instanceof \‪TYPO3\CMS\Fluid\Core\Widget\WidgetRequest) {

            throw new \TYPO3\CMS\Fluid\Core\Widget\Exception\WidgetRequestNotFoundException('The Request is not a WidgetRequest! <f:renderChildren> must be called inside a Widget Template.', 1284986120);

        }

        return $request->getWidgetContext();

    }


    protected static function ‪addArgumentsToTemplateVariableContainer(RenderingContextInterface $renderingContext, array $arguments)

    {

        $templateVariableContainer = $renderingContext->getVariableProvider();

        foreach ($arguments as $identifier => $value) {

            $templateVariableContainer->add($identifier, $value);

        }

    }


    protected static function ‪removeArgumentsFromTemplateVariableContainer(RenderingContextInterface $renderingContext, array $arguments)

    {

        $templateVariableContainer = $renderingContext->getVariableProvider();

        foreach ($arguments as $identifier => $value) {

            $templateVariableContainer->remove($identifier);

        }

    }

}