controllers/grid/settings/user/form/UserEmailForm.inc.php

<?php

import('lib.pkp.classes.form.Form');

class UserEmailForm extends Form {

   /* @var the user id of user to send email to */
   var $userId;

   function UserEmailForm($userId) {
      parent::Form('controllers/grid/settings/user/form/userEmailForm.tpl');

      $this->userId = (int) $userId;

      $this->addCheck(new FormValidator($this, 'subject', 'required', 'email.subjectRequired'));
      $this->addCheck(new FormValidator($this, 'message', 'required', 'email.bodyRequired'));
      $this->addCheck(new FormValidatorPost($this));
   }

   function initData($args, &$request) {
      $fromUser =& $request->getUser();
      $fromSignature = "\n\n\n" . $fromUser->getLocalizedSignature();

      $this->_data = array(
         'message' => $fromSignature
      );
   }

   function readInputData() {
      $this->readUserVars(
         array(
            'subject',
            'message'
         )
      );

   }

   function display($args, &$request) {
      $userDao =& DAORegistry::getDAO('UserDAO');
      $user =& $userDao->getById($this->userId);

      $templateMgr =& TemplateManager::getManager();
      $templateMgr->assign('userId', $this->userId);
      $templateMgr->assign('userFullName', $user->getFullName());
      $templateMgr->assign('userEmail', $user->getEmail());

      return $this->fetch($request);
   }

   function execute($args, &$request) {
      $userDao =& DAORegistry::getDAO('UserDAO');
      $toUser =& $userDao->getById($this->userId);
      $fromUser =& $request->getUser();

      import('lib.pkp.classes.mail.Mail');
      $email = new Mail();

      $email->addRecipient($toUser->getEmail(), $toUser->getFullName());
      $email->setFrom($fromUser->getEmail(), $fromUser->getFullName());
      $email->setSubject($this->getData('subject'));
      $email->setBody($this->getData('message'));
      $email->send();
   }
}

?>