XHTMLCompiler/DOMFilter/IEConditionalComments.php

   1 <?php
   2
   3 /**
   4  * Enables Internet Explorer style conditional comments to survive XML
   5  * parsing by implementing a custom xc:ie-condition attribute to attach
   6  * to elements.
   7  */
   8 class XHTMLCompiler_DOMFilter_IEConditionalComments extends XHTMLCompiler_DOMFilter
   9 {
  10
  11     protected $name = 'IEConditionalComments';
  12     protected $xcAttr = array('ie-condition');
  13
  14     public function process(DOMDocument $dom, $page, $manager) {
  15
  16         $nodes = $this->query( "//*[@xc:ie-condition]" );
  17
  18         if ($nodes) $manager->addDependency(__FILE__);
  19         foreach ($nodes as $node) {
  20             $condition = $this->confiscateAttr($node, $this->ns, 'ie-condition');
  21             if ($condition) {
  22                 $sxml = simplexml_import_dom($node);
  23                 $code = $sxml->asXml();
  24                 $comment = "[if $condition]>$code<![endif]";
  25                 $parent = $node->parentNode;
  26                 $parent->replaceChild($dom->createComment($comment), $node);
  27             }
  28         }
  29
  30     }
  31
  32 }