<?php
class HTMLPurifier_ChildDef_HTML5_Media extends HTMLPurifier_ChildDef
{
public $type = 'media';
public $elements = array(
'source' => true,
'track' => true,
);
protected $allowedElements;
/**
* @param HTMLPurifier_Config $config
* @return array
*/
public function getAllowedElements($config)
{
if (null === $this->allowedElements) {
// Add Flow content to allowed elements to prevent MakeWellFormed
// strategy moving them outside details element
$def = $config->getHTMLDefinition();
$this->allowedElements = array_merge(
$def->info_content_sets['Flow'],
$this->elements
);
unset(
$this->allowedElements['audio'],
$this->allowedElements['video']
);
}
return $this->allowedElements;
}
/**
* @param HTMLPurifier_Node[] $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array|bool
*/
public function validateChildren($children, $config, $context)
{
// Content model:
// If the element has a src attribute: zero or more track elements,
// then transparent, but with no media element descendants.
// If the element does not have a src attribute: zero or more source
// elements, then zero or more track elements, then transparent, but
// with no media element descendants.
$allowSource = isset($config->getHTMLDefinition()->info['source']);
$allowTrack = isset($config->getHTMLDefinition()->info['track']);
$sources = array();
$tracks = array();
$content = array();
foreach ($children as $node) {
switch ($node->name) {
case 'source':
if ($allowSource) {
$sources[] = $node;
}
break;
case 'track':
if ($allowTrack) {
$tracks[] = $node;
}
break;
default:
$content[] = $node;
break;
}
}
$currentNode = $context->get('CurrentNode', true);
$hasSrcAttr = $currentNode instanceof HTMLPurifier_Node_Element && isset($currentNode->attr['src']);
if ($hasSrcAttr) {
$result = array_merge($tracks, $content);
} else {
$result = array_merge($sources, $tracks, $content);
}
if (empty($result) && !$hasSrcAttr) {
return false;
}
return $result;
}
}