File indexing completed on 2024-05-12 06:02:04

 <?php
 
 /**
  * Definition for list containers ul and ol.
  *
  * What does this do?  The big thing is to handle ol/ul at the top
  * level of list nodes, which should be handled specially by /folding/
  * them into the previous list node.  We generally shouldn't ever
  * see other disallowed elements, because the autoclose behavior
  * in MakeWellFormed handles it.
  */
 class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
 {
     /**
      * @type string
      */
     public $type = 'list';
     /**
      * @type array
      */
     // lying a little bit, so that we can handle ul and ol ourselves
     // XXX: This whole business with 'wrap' is all a bit unsatisfactory
     public $elements = array('li' => true, 'ul' => true, 'ol' => true);
 
     /**
      * @param array $children
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return array
      */
     public function validateChildren($children, $config, $context)
     {
         // Flag for subclasses
         $this->whitespace = false;
 
         // if there are no tokens, delete parent node
         if (empty($children)) {
             return false;
         }
 
         // if li is not allowed, delete parent node
         if (!isset($config->getHTMLDefinition()->info['li'])) {
             trigger_error("Cannot allow ul/ol without allowing li", E_USER_WARNING);
             return false;
         }
 
         // the new set of children
         $result = array();
 
         // a little sanity check to make sure it's not ALL whitespace
         $all_whitespace = true;
 
         $current_li = null;
 
         foreach ($children as $node) {
             if (!empty($node->is_whitespace)) {
                 $result[] = $node;
                 continue;
             }
             $all_whitespace = false; // phew, we're not talking about whitespace
 
             if ($node->name === 'li') {
                 // good
                 $current_li = $node;
                 $result[] = $node;
             } else {
                 // we want to tuck this into the previous li
                 // Invariant: we expect the node to be ol/ul
                 // ToDo: Make this more robust in the case of not ol/ul
                 // by distinguishing between existing li and li created
                 // to handle non-list elements; non-list elements should
                 // not be appended to an existing li; only li created
                 // for non-list. This distinction is not currently made.
                 if ($current_li === null) {
                     $current_li = new HTMLPurifier_Node_Element('li');
                     $result[] = $current_li;
                 }
                 $current_li->children[] = $node;
                 $current_li->empty = false; // XXX fascinating! Check for this error elsewhere ToDo
             }
         }
         if (empty($result)) {
             return false;
         }
         if ($all_whitespace) {
             return false;
         }
         return $result;
     }
 }
 
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