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RenderChildrenViewHelper.php
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1 <?php
2 namespace TYPO3\CMS\Fluid\ViewHelpers;
3 
4 /*
5  * This script is backported from the TYPO3 Flow package "TYPO3.Fluid". *
6  * *
7  * It is free software; you can redistribute it and/or modify it under *
8  * the terms of the GNU Lesser General Public License, either version 3 *
9  * of the License, or (at your option) any later version. *
10  * *
11  * *
12  * This script is distributed in the hope that it will be useful, but *
13  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- *
14  * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser *
15  * General Public License for more details. *
16  * *
17  * You should have received a copy of the GNU Lesser General Public *
18  * License along with the script. *
19  * If not, see http://www.gnu.org/licenses/lgpl.html *
20  * *
21  * The TYPO3 project - inspiring people to share! *
22  * */
32 class RenderChildrenViewHelper extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper {
33 
38  public function render(array $arguments = array()) {
39  $renderingContext = $this->getWidgetRenderingContext();
40  $widgetChildNodes = $this->getWidgetChildNodes();
41  $this->addArgumentsToTemplateVariableContainer($arguments);
42  $output = $widgetChildNodes->evaluate($renderingContext);
43  $this->removeArgumentsFromTemplateVariableContainer($arguments);
44  return $output;
45  }
46 
53  protected function getWidgetRenderingContext() {
54  $renderingContext = $this->getWidgetContext()->getViewHelperChildNodeRenderingContext();
55  if (!$renderingContext instanceof \TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface) {
56  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);
57  }
58  return $renderingContext;
59  }
60 
64  protected function getWidgetChildNodes() {
65  return $this->getWidgetContext()->getViewHelperChildNodes();
66  }
67 
72  protected function getWidgetContext() {
73  $request = $this->controllerContext->getRequest();
74  if (!$request instanceof \TYPO3\CMS\Fluid\Core\Widget\WidgetRequest) {
75  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);
76  }
77  return $request->getWidgetContext();
78  }
79 
86  protected function addArgumentsToTemplateVariableContainer(array $arguments) {
87  $templateVariableContainer = $this->getWidgetRenderingContext()->getTemplateVariableContainer();
88  foreach ($arguments as $identifier => $value) {
89  $templateVariableContainer->add($identifier, $value);
90  }
91  }
92 
99  protected function removeArgumentsFromTemplateVariableContainer(array $arguments) {
100  $templateVariableContainer = $this->getWidgetRenderingContext()->getTemplateVariableContainer();
101  foreach ($arguments as $identifier => $value) {
102  $templateVariableContainer->remove($identifier);
103  }
104  }
105 }