<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Form

 * @subpackage Decorator

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/** @see Zend_Form_Decorator_Abstract */

require_once 'Zend/Form/Decorator/Abstract.php';

/**

 * Captcha generic decorator

 *

 * Adds captcha adapter output

 *

 * @category   Zend

 * @package    Zend_Form

 * @subpackage Decorator

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Captcha.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

class Zend_Form_Decorator_Captcha extends Zend_Form_Decorator_Abstract

{

    /**

     * Render captcha

     *

     * @param  string $content

     * @return string

     */

    public function render($content)

    {

        $element = $this->getElement();

        if (!method_exists($element, 'getCaptcha')) {

            return $content;

        }

        $view    = $element->getView();

        if (null === $view) {

            return $content;

        }

        $placement = $this->getPlacement();

        $separator = $this->getSeparator();

        $captcha = $element->getCaptcha();

        $markup  = $captcha->render($view, $element);

        switch ($placement) {

            case 'PREPEND':

                $content = $markup . $separator .  $content;

                break;

            case 'APPEND':

            default:

                $content = $content . $separator . $markup;

        }

        return $content;

    }

}