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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Helper\SecureHtmlRender;
use Magento\Framework\Escaper;
/**
* Renders HTML based on provided data.
*/
class HtmlRenderer
{
/**
* List of void elements which require a self-closing tag and don't allow content
*
* @var array
*/
private const VOID_ELEMENTS_MAP = [
'area' => true,
'base' => true,
'br' => true,
'col' => true,
'command' => true,
'embed' => true,
'hr' => true,
'img' => true,
'input' => true,
'keygen' => true,
'link' => true,
'meta' => true,
'param' => true,
'source' => true,
'track' => true,
'wbr' => true,
];
/**
* @var Escaper
*/
private $escaper;
/**
* @param Escaper $escaper
*/
public function __construct(Escaper $escaper)
{
$this->escaper = $escaper;
}
/**
* Render the tag.
*
* @param TagData $tagData
* @return string
*/
public function renderTag(TagData $tagData): string
{
$attributesHtmls = [];
foreach ($tagData->getAttributes() as $attribute => $value) {
$attributesHtmls[] = $attribute . '="' .$this->escaper->escapeHtmlAttr($value) .'"';
}
$content = null;
if ($tagData->getContent() !== null) {
$content = $tagData->isTextContent()
? $this->escaper->escapeHtml($tagData->getContent()) : $tagData->getContent();
}
$attributesHtml = '';
if ($attributesHtmls) {
$attributesHtml = ' ' .implode(' ', $attributesHtmls);
}
$html = '<' .$tagData->getTag() .$attributesHtml;
if (isset(self::VOID_ELEMENTS_MAP[$tagData->getTag()])) {
$html .= '/>';
} else {
$html .= '>' .$content .'</' .$tagData->getTag() .'>';
}
return $html;
}
/**
* Render the handler as an HTML attribute.
*
* @param EventHandlerData $eventHandlerData
* @return string
*/
public function renderEventHandler(EventHandlerData $eventHandlerData): string
{
return $eventHandlerData->getEvent() .'="'
.$this->escaper->escapeHtmlAttr($eventHandlerData->getCode()) .'"';
}
}