AbstractWidgetViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\Core\Widget;

/*                                                                        *
 * This script is backported from the TYPO3 Flow package "TYPO3.Fluid".   *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU Lesser General Public License, either version 3   *
 *  of the License, or (at your option) any later version.                *
 *                                                                        *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser       *
 * General Public License for more details.                               *
 *                                                                        *
 * You should have received a copy of the GNU Lesser General Public       *
 * License along with the script.                                         *
 * If not, see http://www.gnu.org/licenses/lgpl.html                      *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */
abstract class AbstractWidgetViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper implements \TYPO3\CMS\Fluid\Core\ViewHelper\Facets\ChildNodeAccessInterface
{
    protected $controller;

    protected $ajaxWidget = false;

    private $ajaxWidgetContextHolder;

    protected $objectManager;

    protected $extensionService;

    private $widgetContext;

    public function injectAjaxWidgetContextHolder(\TYPO3\CMS\Fluid\Core\Widget\AjaxWidgetContextHolder $ajaxWidgetContextHolder)
    {
        $this->ajaxWidgetContextHolder = $ajaxWidgetContextHolder;
    }

    public function injectObjectManager(\TYPO3\CMS\Extbase\Object\ObjectManagerInterface $objectManager)
    {
        $this->objectManager = $objectManager;
        $this->widgetContext = $this->objectManager->get(\TYPO3\CMS\Fluid\Core\Widget\WidgetContext::class);
    }

    public function initializeArgumentsAndRender()
    {
        $this->validateArguments();
        $this->initialize();
        $this->initializeWidgetContext();
        return $this->callRenderMethod();
    }

    private function initializeWidgetContext()
    {
        $this->widgetContext->setWidgetConfiguration($this->getWidgetConfiguration());
        $this->initializeWidgetIdentifier();
        $this->widgetContext->setControllerObjectName(get_class($this->controller));
        $extensionName = $this->controllerContext->getRequest()->getControllerExtensionName();
        $pluginName = $this->controllerContext->getRequest()->getPluginName();
        $this->widgetContext->setParentExtensionName($extensionName);
        $this->widgetContext->setParentPluginName($pluginName);
        $pluginNamespace = $this->extensionService->getPluginNamespace($extensionName, $pluginName);
        $this->widgetContext->setParentPluginNamespace($pluginNamespace);
        $this->widgetContext->setWidgetViewHelperClassName(get_class($this));
        if ($this->ajaxWidget === true) {
            $this->ajaxWidgetContextHolder->store($this->widgetContext);
        }
    }

    public function setChildNodes(array $childNodes)
    {
        $rootNode = $this->objectManager->get(\TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\RootNode::class);
        foreach ($childNodes as $childNode) {
            $rootNode->addChildNode($childNode);
        }
        $this->widgetContext->setViewHelperChildNodes($rootNode, $this->renderingContext);
    }

    protected function getWidgetConfiguration()
    {
        return $this->arguments;
    }

    protected function initiateSubRequest()
    {
        if (!$this->controller instanceof \TYPO3\CMS\Fluid\Core\Widget\AbstractWidgetController) {
            if (isset($this->controller)) {
                throw new \TYPO3\CMS\Fluid\Core\Widget\Exception\MissingControllerException('initiateSubRequest() can not be called if there is no valid controller extending TYPO3\\CMS\\Fluid\\Core\\Widget\\AbstractWidgetController. Got "' . get_class($this->controller) . '" in class "' . get_class($this) . '".', 1289422564);
            }
            throw new \TYPO3\CMS\Fluid\Core\Widget\Exception\MissingControllerException('initiateSubRequest() can not be called if there is no controller inside $this->controller. Make sure to add a corresponding injectController method to your WidgetViewHelper class "' . get_class($this) . '".', 1284401632);
        }
        $subRequest = $this->objectManager->get(\TYPO3\CMS\Fluid\Core\Widget\WidgetRequest::class);
        $subRequest->setWidgetContext($this->widgetContext);
        $this->passArgumentsToSubRequest($subRequest);
        $subResponse = $this->objectManager->get(\TYPO3\CMS\Extbase\Mvc\Web\Response::class);
        $this->controller->processRequest($subRequest, $subResponse);
        return $subResponse;
    }

    private function passArgumentsToSubRequest(\TYPO3\CMS\Fluid\Core\Widget\WidgetRequest $subRequest)
    {
        $arguments = $this->controllerContext->getRequest()->getArguments();
        $widgetIdentifier = $this->widgetContext->getWidgetIdentifier();
        if (isset($arguments[$widgetIdentifier])) {
            if (isset($arguments[$widgetIdentifier]['action'])) {
                $subRequest->setControllerActionName($arguments[$widgetIdentifier]['action']);
                unset($arguments[$widgetIdentifier]['action']);
            }
            $subRequest->setArguments($arguments[$widgetIdentifier]);
        }
    }

    private function initializeWidgetIdentifier()
    {
        if (!$this->viewHelperVariableContainer->exists(\TYPO3\CMS\Fluid\Core\Widget\AbstractWidgetViewHelper::class, 'nextWidgetNumber')) {
            $widgetCounter = 0;
        } else {
            $widgetCounter = $this->viewHelperVariableContainer->get(\TYPO3\CMS\Fluid\Core\Widget\AbstractWidgetViewHelper::class, 'nextWidgetNumber');
        }
        $widgetIdentifier = '@widget_' . $widgetCounter;
        $this->viewHelperVariableContainer->addOrUpdate(\TYPO3\CMS\Fluid\Core\Widget\AbstractWidgetViewHelper::class, 'nextWidgetNumber', $widgetCounter + 1);
        $this->widgetContext->setWidgetIdentifier($widgetIdentifier);
    }
}