modifier.add_styles.php

 <?php

 /**

  * wCMF - wemove Content Management Framework

  * Copyright (C) 2005-2020 wemove digital solutions GmbH

  *

  * Licensed under the terms of the MIT License.

  *

  * See the LICENSE file distributed with this work for

  * additional information.

  */

 use wcmf\lib\util\DOMUtils;

 

 /**

  * Add classes to elements in an html string

  *

  * Example:

  * @code

  * {$html|add_styles:['p' => 'contact lh-title f4 f3-m f2_3-l near-black db pb2 l','a' => 'link near-black']}

  * @endcode

  *

  * @param $string The html string

  * @param $styles Map with element names as keys and string with class names as values

  * @param $onlyIfUnstyled Boolean indicating whether to add styles only, if the element has no classes or always (default: true)

  * @return String

  */

 function smarty_modifier_add_styles($html, $styles, $onlyIfUnstyled=true) {

  return strlen($html) > 0 ? DOMUtils::processHtml($html, function(\DOMDocument $doc) use ($styles, $onlyIfUnstyled) {

  $xpath = new \DOMXpath($doc);

  foreach ($styles as $name => $classes) {

  $elements = $xpath->query("//".$name);

  foreach ($elements as $element) {

  $classAttr = trim($element->getAttribute("class"));

  if (strlen($classAttr) == 0 || !$onlyIfUnstyled) {

  $existingClasses = explode(" ", $element->getAttribute("class"));

  $allClasses = array_unique(array_merge($existingClasses, explode(" ", $classes)));

  $element->setAttribute("class", join(" ", $allClasses));

  }

  }

  }

  }) : '';

 }

 ?>