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<?php
declare(strict_types=1);
/*
* 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!
*/
namespace TYPO3\CMS\Fluid\ViewHelpers\Link;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper;
/**
* A ViewHelper for creating links to external targets.
*
* Examples
* ========
*
* Default
* -------
*
* ::
*
* <f:link.external uri="https://www.typo3.org" target="_blank">external link</f:link.external>
*
* Output::
*
* <a href="https://www.typo3.org" target="_blank">external link</a>
*
* Custom default scheme
* ---------------------
*
* ::
*
* <f:link.external uri="typo3.org" defaultScheme="ftp">external ftp link</f:link.external>
*
* Output::
*
* <a href="ftp://typo3.org">external ftp link</a>
*/
final class ExternalViewHelper extends AbstractTagBasedViewHelper
{
/**
* @var string
*/
protected $tagName = 'a';
public function initializeArguments(): void
{
parent::initializeArguments();
$this->registerArgument('uri', 'string', 'The URI that will be put in the href attribute of the rendered link tag', true);
$this->registerArgument('defaultScheme', 'string', 'Scheme the href attribute will be prefixed with if specified $uri does not contain a scheme already', false, 'https');
$this->registerUniversalTagAttributes();
$this->registerTagAttribute('name', 'string', 'Specifies the name of an anchor');
$this->registerTagAttribute('rel', 'string', 'Specifies the relationship between the current document and the linked document');
$this->registerTagAttribute('rev', 'string', 'Specifies the relationship between the linked document and the current document');
$this->registerTagAttribute('target', 'string', 'Specifies where to open the linked document');
}
public function render(): string
{
$uri = $this->arguments['uri'];
$defaultScheme = $this->arguments['defaultScheme'];
$scheme = parse_url($uri, PHP_URL_SCHEME);
if ($scheme === null && $defaultScheme !== '') {
$uri = $defaultScheme . '://' . $uri;
}
$this->tag->addAttribute('href', $uri);
$this->tag->setContent($this->renderChildren());
$this->tag->forceClosingTag(true);
return $this->tag->render();
}
}