/**
* @return form_CaptchaGenerator
*/
public static function getInstance()
{
if (self::$instance === null) {
self::$instance = self::getServiceClassInstance(get_class());
}
return self::$instance;
}
/**
* @param Context $context
* @param Request $request
*/
public function _execute($context, $request)
{
controller_ChangeController::setNoCache();
$generator = form_CaptchaGenerator::getInstance();
$renew = $request->hasParameter('renew');
// Set optionnal parameters.
if ($request->hasParameter('ml')) {
$generator->setCodeMaxLength(intval($request->getParameter('ml')));
if ($renew) {
$generator->setCodeMinLength(intval($request->getParameter('ml')));
}
}
if ($request->hasParameter('iw')) {
$generator->setWidth(intval($request->getParameter('iw')));
}
if ($request->hasParameter('ih')) {
$generator->setHeight(intval($request->getParameter('ih')));
}
if ($request->hasParameter('fs')) {
$generator->setFontSize(intval($request->getParameter('fs')));
}
if ($request->hasParameter('fd')) {
$generator->setFontDepth(intval($request->getParameter('fd')));
}
// Renders the image.
if ($renew) {
$generator->generateCode();
}
$generator->render($context->getUser()->getAttribute(CAPTCHA_SESSION_KEY));
return View::NONE;
}
private static function generateCaptchaCode($parameters)
{
$generator = form_CaptchaGenerator::getInstance();
foreach ($parameters as $name => $value) {
switch ($name) {
case 'ml':
$generator->setCodeMaxLength(intval($value));
break;
case 'iw':
$generator->setWidth(intval($value));
break;
case 'ih':
$generator->setHeight(intval($value));
break;
case 'fs':
$generator->setFontSize(intval($value));
break;
case 'fd':
$generator->setFontDepth(intval($value));
break;
}
}
$generator->generateCode();
}
