<?php

/**
 * Validates the border property as defined by CSS.
 */
class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef {
	
	/**
	 * Local copy of properties this property is shorthand for.
	 * @type HTMLPurifier_AttrDef[]
	 */
	protected $info = array ();
	
	/**
	 *
	 * @param HTMLPurifier_Config $config        	
	 */
	public function __construct($config) {
		$def = $config->getCSSDefinition ();
		$this->info ['border-width'] = $def->info ['border-width'];
		$this->info ['border-style'] = $def->info ['border-style'];
		$this->info ['border-top-color'] = $def->info ['border-top-color'];
	}
	
	/**
	 *
	 * @param string $string        	
	 * @param HTMLPurifier_Config $config        	
	 * @param HTMLPurifier_Context $context        	
	 * @return bool|string
	 */
	public function validate($string, $config, $context) {
		$string = $this->parseCDATA ( $string );
		$string = $this->mungeRgb ( $string );
		$bits = explode ( ' ', $string );
		$done = array (); // segments we've finished
		$ret = ''; // return value
		foreach ( $bits as $bit ) {
			foreach ( $this->info as $propname => $validator ) {
				if (isset ( $done [$propname] )) {
					continue;
				}
				$r = $validator->validate ( $bit, $config, $context );
				if ($r !== false) {
					$ret .= $r . ' ';
					$done [$propname] = true;
					break;
				}
			}
		}
		return rtrim ( $ret );
	}
}

// vim: et sw=4 sts=4