<?php

/**
 * Special-case enum attribute definition that lazy loads allowed frame targets
 */
class HTMLPurifier_AttrDef_HTML_FrameTarget extends HTMLPurifier_AttrDef_Enum {
	
	/**
	 * @type array
	 */
	public $valid_values = false; // uninitialized value
	
	/**
	 * @type bool
	 */
	protected $case_sensitive = false;
	public function __construct() {
	}
	
	/**
	 *
	 * @param string $string        	
	 * @param HTMLPurifier_Config $config        	
	 * @param HTMLPurifier_Context $context        	
	 * @return bool|string
	 */
	public function validate($string, $config, $context) {
		if ($this->valid_values === false) {
			$this->valid_values = $config->get ( 'Attr.AllowedFrameTargets' );
		}
		return parent::validate ( $string, $config, $context );
	}
}

// vim: et sw=4 sts=4