class_EmailChangeFilter.php

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<?php
class EmailChangeFilter extends BaseFilter implements Filterable {
        protected function __construct () {
                // Call parent constructor
                parent::__construct(__CLASS__);
        }

        public final static function createEmailChangeFilter () {
                // Get a new instance
                $filterInstance = new EmailChangeFilter();

                // Return the instance
                return $filterInstance;
        }

        public function execute (Requestable $requestInstance, Responseable $responseInstance) {
                // Get both emails
                $email1 = $requestInstance->getRequestElement('email1');
                $email2 = $requestInstance->getRequestElement('email2');

                // Is only first email set?
                if ((!empty($email1)) && (empty($email2))) {
                        // Request is invalid!
                        $requestInstance->requestIsValid(false);

                        // Email 2 is empty
                        $responseInstance->addFatalMessage('email2_empty');

                        // Stop processing here
                        return false;
                } // END - if

                // Is only second email set?
                if ((empty($email1)) && (!empty($email2))) {
                        // Request is invalid!
                        $requestInstance->requestIsValid(false);

                        // Email 1 is empty
                        $responseInstance->addFatalMessage('email1_empty');

                        // Stop processing here
                        return false;
                } // END - if

                // Do both match?
                if ($email1 != $email2) {
                        // Request is invalid!
                        $requestInstance->requestIsValid(false);

                        // Emails are mismatching
                        $responseInstance->addFatalMessage('emails_mismatch');

                        // Stop processing here
                        return false;
                } // END - if

                // Are email and confirmation empty?
                if ((empty($email1)) && (empty($email2))) {
                        // No email change required!
                        return true;
                } // END - if

                // Now, get a user instance for comparison
                $userInstance = Registry::getRegistry()->getInstance('user');

                // Get the email field
                $userEmail = $userInstance->getField('email');

                // Are they different?
                if ($userEmail == $email1) {
                        // Nothing has been changed is fine...
                        return true;
                } // END - if

                // Update the "new_email" field
                $this->partialStub("Unfinished part.");
        }
}

// [EOF]
?>