<?php
/**
 * Populate form element's value to match available values
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage db
 */

WBClass::load('WBDatasource_FormAttribute');

/**
 * Populate form element's value to match available values
 *
 * Use table data to populate values
 *
 * @version 0.1.0
 * @package WB
 * @subpackage db
 */
class WBDatasource_FormAttribute_ValueFixer extends WBDatasource_FormAttribute
{
    /**
     * configuration parameter
     * @var array
     */
    protected $config   =   array(
                            );

    /**
     * Current HTTP Request
     * @var WBRequest
     */
    private $req;

    /**
     * Get Attribute's Value
     *
     * Actually don't change current attribute's value, just fix request value
     * in order to allow form validation to succeed
     *
     * @param mixed $current actual attribute value
     * @return array
     */
    protected function getAttributeValue($current)
    {
        $this->req  =   WBClass::create('WBRequest');

        $name   =   $this->element->getAttribute('name');
        $value  =   $this->req->get($name, '__NOT_SET__');

        if ('__NOT_SET__' == $value) {
            return $current;
        }

        $values =   $this->element->getAttribute('values');
        foreach ($values as $v) {
            if ($v['value'] == $value) {
                return $current;
            }
        }

        $this->element->setValue($current);
        return $current;
    }
}