[TASK] Move ViewHelper arguments to initializeArguments() in ext:belog
[Packages/TYPO3.CMS.git] / typo3 / sysext / belog / Classes / ViewHelpers / IsExtensionLoadedViewHelper.php
1 <?php
2 namespace TYPO3\CMS\Belog\ViewHelpers;
3
4 /*
5 * This file is part of the TYPO3 CMS project.
6 *
7 * It is free software; you can redistribute it and/or modify it under
8 * the terms of the GNU General Public License, either version 2
9 * of the License, or any later version.
10 *
11 * For the full copyright and license information, please read the
12 * LICENSE.txt file that was distributed with this source code.
13 *
14 * The TYPO3 project - inspiring people to share!
15 */
16
17 use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
18 use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
19 use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
20
21 /**
22 * Returns true, if a specific extension is loaded
23 * @internal
24 */
25 class IsExtensionLoadedViewHelper extends AbstractViewHelper
26 {
27 /**
28 * Initializes the arguments
29 */
30 public function initializeArguments()
31 {
32 parent::initializeArguments();
33 $this->registerArgument('extensionKey', 'string', 'The extension\'s key', true);
34 }
35
36 /**
37 * Checks whether an extension is loaded.
38 *
39 * @return bool TRUE if extension is loaded, FALSE otherwise
40 */
41 public function render()
42 {
43 return static::renderStatic(
44 $this->arguments,
45 $this->buildRenderChildrenClosure(),
46 $this->renderingContext
47 );
48 }
49
50 /**
51 * @param array $arguments
52 * @param \Closure $renderChildrenClosure
53 * @param RenderingContextInterface $renderingContext
54 *
55 * @return bool
56 */
57 public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
58 {
59 return ExtensionManagementUtility::isLoaded($arguments['extensionKey']);
60 }
61 }