facebook.php

<?php
 
namespace Bitrix\Main\UrlPreview\Parser;
 
use Bitrix\Main\UrlPreview\HtmlDocument;
use Bitrix\Main\Web\HttpClient;
 
class Facebook extends Oembed
{
    public function handle(HtmlDocument $document, HttpClient $httpClient = null)
    {
        parent::handle($document);
 
        if($document->getEmdbed())
        {
            $embedHtml = $document->getEmdbed();
 
            preg_match('/<div(?:.+?)fb-post(.+?)>/i', $embedHtml, $divTags);
 
            if($divTags[0])
            {
                $div = str_replace('>', ' data-show-text="false">', $divTags[0]);
                $embedHtml = str_replace($divTags[0], $div, $embedHtml);
                $document->setEmbed($embedHtml);
            }
        }
    }
}