captcha_manager.inc

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<?php
class CaptchaManager
{
     static $providers = array();
     
     function CaptchaManager()
     {
          ComponentManager::fireEvent("RegisterCaptchaProvider");
     }
 
     function addCaptchaToForm($form)
     {
          $provider = Settings::getValue("captcha", "captcha_provider");
          if (!$provider) return;
          
          $renderer = new $provider($form);       
     }
     
     static function registerCaptchaProvider($name, $class)
     {
          CaptchaManager::$providers[$class] = $name;
     }
     
     static function setDefaults()
     {
          Settings::setDefaultValue("captcha", "captcha_provider", "", String, "Select the Captcha provider to use on your site", "CAPTCHA Provider");
     }
     
     static function registerSettingsFormExtension()
     {
          SettingsManager::registerExtension("captcha", array(CaptchaManager, settingsExtension));       
     }
          
     static function settingsExtension($form)
     {
          $mgr = new CaptchaManager();
          $providerSelect = new SelectFieldRenderer($form, "captcha_provider", "Captcha Provider", CaptchaManager::$providers);
          $providerSelect->defaultBlank = true;
     }
}
?>