RemoveExtensionViewHelper.php

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<?php
namespace TYPO3\CMS\Extensionmanager\ViewHelpers;

class RemoveExtensionViewHelper extends \TYPO3\CMS\Fluid\ViewHelpers\Link\ActionViewHelper {

    protected $tagName = 'a';

    public function render($extension) {
        if (\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded($extension['key'])) {
            return '';
        }
        if (
            !in_array($extension['type'], \TYPO3\CMS\Extensionmanager\Domain\Model\Extension::returnAllowedInstallTypes()) ||
            $extension['type'] === 'System'
        ) {
            return '';
        }
        $uriBuilder = $this->controllerContext->getUriBuilder();
        $action = 'removeExtension';
        $uriBuilder->reset();
        $uriBuilder->setFormat('json');
        $uri = $uriBuilder->uriFor($action, array(
            'extension' => $extension['key']
        ), 'Action');
        $this->tag->addAttribute('href', $uri);
        $cssClass = 'removeExtension';
        $this->tag->addAttribute('class', $cssClass);
        $this->tag->addAttribute('title', \TYPO3\CMS\Extbase\Utility\LocalizationUtility::translate('extensionList.remove', 'extensionmanager'));
        $this->tag->setContent(\TYPO3\CMS\Backend\Utility\IconUtility::getSpriteIcon('actions-edit-delete'));
        return $this->tag->render();
    }

}