* @copyright 2006-2008 by Philippe Jausions / 11abacus
* @license http://www.opensource.org/licenses/bsd-license.php New BSD
* @version CVS: $Id: Image.php,v 1.1 2008/04/26 23:27:30 jausions Exp $
* @link http://pear.php.net/package/HTML_QuickForm_CAPTCHA
*/
/**
* Element for HTML_QuickForm to display a CAPTCHA image
*
* The HTML_QuickForm_CAPTCHA package adds an element to the
* HTML_QuickForm package to display a CAPTCHA image.
*
* Options for the element
*
*
'width' (integer) width of the image,
*
'height' (integer) height of the image,
*
'imageOptions' (array) options passed to the Image_Text
* constructor,
*
'callback' (string) URL of callback script that will generate
* and output the image itself,
*
'alt' (string) the alt text for the image,
*
'sessionVar' (string) name of session variable containing
* the Text_CAPTCHA instance (defaults to
* _HTML_QuickForm_CAPTCHA.)
*
*
* This package requires the use of a PHP session.
*
* @category HTML
* @package HTML_QuickForm_CAPTCHA
* @author Philippe Jausions
* @copyright 2006-2008 by Philippe Jausions / 11abacus
* @license http://www.opensource.org/licenses/bsd-license.php New BSD
* @version Release: 0.3.0
* @link http://pear.php.net/package/HTML_QuickForm_CAPTCHA
* @see Text_CAPTCHA_Driver_Image
*/
class HTML_QuickForm_CAPTCHA_Image extends HTML_QuickForm_CAPTCHA
{
public function __construct(
$elementName = null,
$elementLabel = null,
$options = null,
$attributes = null
) {
return parent::__construct(
$elementName,
$elementLabel,
$options,
$attributes
);
}
/**
* Default options
*
* @var array
* @access protected
*/
var $_options = array(
'sessionVar' => '_HTML_QuickForm_CAPTCHA',
'width' => '200',
'height' => '80',
'alt' => 'Click to view another image',
'callback' => '',
'imageOptions' => null,
'phrase' => null,
);
/**
* CAPTCHA driver
*
* @var string
* @access protected
*/
var $_CAPTCHA_driver = 'Image';
/**
* Code based in HTML_QuickForm_text::getTemplate()
* In order to render correctly the captcha in different layouts
* @param string $layout
*
* @return string
*/
public static function getTemplate($layout)
{
$size = 8;
switch ($layout) {
case FormValidator::LAYOUT_INLINE:
return '
{element}
';
break;
case FormValidator::LAYOUT_HORIZONTAL:
return '
{icon}
{element}
{label_2}
{error}
{label_3}
';
break;
case FormValidator::LAYOUT_BOX_NO_LABEL:
return '
{icon}
{element}
';
break;
}
}
/**
* Returns the HTML for the CAPTCHA image
*
* @return string
* @access public
*/
public function toHtml()
{
if ($this->_flagFrozen) {
return '';
}
$result = parent::_initCAPTCHA();
if (PEAR::isError($result)) {
return $result;
}
$html = '';
$tabs = $this->_getTabs();
$inputName = $this->getName();
$imgName = 'QF_CAPTCHA_'.$inputName;
if ($this->getComment() != '') {
$html .= $tabs.'';
}
$attr = $this->_attributes;
unset($attr['type']);
unset($attr['value']);
unset($attr['name']);
$html = $tabs.'_getAttrString($attr)
.' onclick="var cancelClick = false; '
.$this->getOnclickJs($imgName)
.' return !cancelClick;">';
return $html;
}
/**
* Creates the javascript for the onclick event which will
* reload a new CAPTCHA image
*
* @param string $imageName The image name/id
*
* @return string
* @access public
*/
function getOnclickJs($imageName)
{
$onclickJs = ''
.'if (document.images) {'
.' var img = new Image();'
.' var d = new Date();'
.' img.src = this.href + ((this.href.indexOf(\'?\') == -1) '
.'? \'?\' : \'&\') + d.getTime();'
.' document.images[\''.addslashes($imageName).'\'].src = img.src;'
.' cancelClick = true;'
.'}';
return $onclickJs;
}
}