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<?php
/**
* Defines allowed child nodes and validates tokens against it.
*/
abstract class HTMLPurifier_ChildDef
{
/**
* Type of child definition, usually right-most part of class name lowercase.
* Used occasionally in terms of context.
*/
public $type;
/**
* Bool that indicates whether or not an empty array of children is okay
*
* This is necessary for redundant checking when changes affecting
* a child node may cause a parent node to now be disallowed.
*/
public $allow_empty;
/**
* Lookup array of all elements that this definition could possibly allow
*/
public $elements = array();
/**
* Get lookup of tag names that should not close this element automatically.
* All other elements will do so.
*/
public function getAllowedElements($config) {
return $this->elements;
}
/**
* Validates nodes according to definition and returns modification.
*
* @param $tokens_of_children Array of HTMLPurifier_Token
* @param $config HTMLPurifier_Config object
* @param $context HTMLPurifier_Context object
* @return bool true to leave nodes as is
* @return bool false to remove parent node
* @return array of replacement child tokens
*/
abstract public function validateChildren($tokens_of_children, $config, $context);
}
// vim: et sw=4 sts=4
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