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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @package Zend_Form
*/
namespace Zend\Form\View\Helper\Captcha;
use Zend\Captcha\Image as CaptchaAdapter;
use Zend\Form\ElementInterface;
use Zend\Form\Exception;
/**
* @category Zend
* @package Zend_Form
* @subpackage View
*/
class Image extends AbstractWord
{
/**
* Render the captcha
*
* @param ElementInterface $element
* @throws Exception\DomainException
* @return string
*/
public function render(ElementInterface $element)
{
$captcha = $element->getCaptcha();
if ($captcha === null || !$captcha instanceof CaptchaAdapter) {
throw new Exception\DomainException(sprintf(
'%s requires that the element has a "captcha" attribute of type Zend\Captcha\Image; none found',
__METHOD__
));
}
$captcha->generate();
$imgAttributes = array(
'width' => $captcha->getWidth(),
'height' => $captcha->getHeight(),
'alt' => $captcha->getImgAlt(),
'src' => $captcha->getImgUrl() . $captcha->getId() . $captcha->getSuffix(),
);
if ($element->hasAttribute('id')) {
$imgAttributes['id'] = $element->getAttribute('id') . '-image';
}
$closingBracket = $this->getInlineClosingBracket();
$img = sprintf(
'<img %s%s',
$this->createAttributesString($imgAttributes),
$closingBracket
);
$position = $this->getCaptchaPosition();
$separator = $this->getSeparator();
$captchaInput = $this->renderCaptchaInputs($element);
$pattern = '%s%s%s';
if ($position == self::CAPTCHA_PREPEND) {
return sprintf($pattern, $captchaInput, $separator, $img);
}
return sprintf($pattern, $img, $separator, $captchaInput);
}
}
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