styleinliner.php

См. документацию.

<?php
namespace Bitrix\Main\Web\DOM;
 
class StyleInliner
{
    public static function inlineDocument(Document $document, array $styleList = null)
    {
        if(!$styleList)
        {
            $styleList = CssParser::parseDocument($document, true);
        }
 
        foreach($styleList as $rule)
        {
            $nodeList = $document->querySelectorAll($rule['SELECTOR']);
            foreach($nodeList as $node)
            {
                static::setStyle($node, $rule['STYLE'], true);
            }
        }
    }
 
    public static function inlineHtml($html, array $styleList = null)
    {
        $document = new Document;
        $document->loadHTML($html);
 
        static::inlineDocument($document, $styleList);
 
        return $document->saveHTML();
    }
 
    /*
     * @param Element $node
     * @param bool $singleStyle
     * @return array
    */
    public static function getStyle(Element $node, $singleStyle = true)
    {
        $styleList = array();
        $style = $node->getAttribute("style");
        if($style)
        {
            $styleList = CssParser::getDeclarationArray($style, $singleStyle);
        }
 
        return $styleList;
    }
 
    /*
     * @param Element $node
     * @param array $styleList
     * @param bool $append
     * @return void
    */
    public static function setStyle(Element $node, $styleList, $append = false)
    {
        if($append)
        {
            if(empty($styleList))
            {
                return;
            }
 
            $result = static::getStyle($node);
            foreach($styleList as $k => $v)
            {
                if("!important" !== mb_substr(mb_strtolower($styleList[$k]), -10))
                {
                    if(array_key_exists($k, $result))
                    {
                        continue;
                    }
                }
 
                $result[$k] = $v;
            }
        }
        else
        {
            $result = $styleList;
        }
 
        $node->setAttribute("style", CssParser::getDeclarationString($result));
    }
}