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<?php |
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/** |
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* TReCaptcha2Validator class file |
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* |
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* @author Cristian Camilo Naranjo Valencia |
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* @link http://icolectiva.co |
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* @copyright Copyright © 2005-2016 The PRADO Group |
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* @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT |
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* @package System.Web.UI.WebControls |
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*/ |
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namespace Prado\Web\UI\WebControls; |
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use Exception; |
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use Prado\Web\Javascripts\TJavaScript; |
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/** |
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* TReCaptcha2Validator class |
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* |
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* TReCaptcha2Validator validates a reCAPTCHA represented by a {@link TReCaptcha} control. |
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* The input control fails validation if th user did not pass the humanity test. |
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* |
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* To use TReCaptcha2Validator, specify the {@link setCaptchaControl CaptchaControl} |
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* to be the ID path of the {@link TReCaptcha} control. |
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* |
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* @author Cristian Camilo Naranjo Valencia |
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* @package System.Web.UI.WebControls |
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* @since 3.3.1 |
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*/ |
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class TReCaptcha2Validator extends TBaseValidator |
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{ |
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protected $_isvalid = null; |
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protected function getClientClassName() |
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{ |
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return 'Prado.WebUI.TReCaptcha2Validator'; |
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} |
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public function getEnableClientScript() |
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{ |
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return true; |
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} |
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protected function getCaptchaControl() |
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{ |
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$control = $this->getValidationTarget(); |
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if (!$control) |
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throw new Exception('No target control specified for TReCaptcha2Validator'); |
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if (!($control instanceof TReCaptcha2)) |
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throw new Exception('TReCaptcha2Validator only works with TReCaptcha2 controls'); |
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return $control; |
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} |
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public function getClientScriptOptions() |
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{ |
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$options = parent::getClientScriptOptions(); |
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$options['ResponseFieldName'] = $this->getCaptchaControl()->getResponseFieldName(); |
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return $options; |
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} |
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/** |
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* This method overrides the parent's implementation. |
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* The validation succeeds if the input control has the same value |
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* as the one displayed in the corresponding RECAPTCHA control. |
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* |
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* @return boolean whether the validation succeeds |
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*/ |
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protected function evaluateIsValid() |
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{ |
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// check validity only once (if trying to evaulate multiple times, all redundant checks would fail) |
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if (is_null($this->_isvalid)) |
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{ |
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$control = $this->getCaptchaControl(); |
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$this->_isvalid = $control->validate(); |
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} |
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return ($this->_isvalid==true); |
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} |
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public function onPreRender($param) |
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{ |
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parent::onPreRender($param); |
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$cs = $this->Page->getClientScript(); |
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$cs->registerPradoScript('validator'); |
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// communicate validation status to the client side |
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$value = $this->_isvalid===false ? '0' : '1'; |
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$cs->registerHiddenField($this->getClientID().'_1',$value); |
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// update validator display |
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if ($control = $this->getValidationTarget()) |
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{ |
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$fn = 'captchaUpdateValidatorStatus_'.$this->getClientID(); |
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$cs->registerEndScript($this->getClientID().'::validate', implode(' ',array( |
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// this function will be used to update the validator |
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'function '.$fn.'(valid)', |
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'{', |
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' jQuery('.TJavaScript::quoteString('#'.$this->getClientID().'_1').').val(valid);', |
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' Prado.Validation.validateControl('.TJavaScript::quoteString($control->ClientID).'); ', |
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'}', |
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'', |
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// update the validator to the result if we're in a callback |
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// (if we're in initial rendering or a postback then the result will be rendered directly to the page html anyway) |
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$this->Page->IsCallback ? $fn.'('.$value.');' : '', |
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'', |
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// install event handler that clears the validation error when user changes the captcha response field |
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'jQuery("#'.$control->getClientID().'").on("change", '.TJavaScript::quoteString('#'.$control->getResponseFieldName()).', function() { ', |
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$fn.'("1");', |
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'});', |
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))); |
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} |
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} |
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} |
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pradosoft /
prado
