use fieldwork\Form;
use fieldwork\components\TextField;
use fieldwork\components\Button;
use fieldwork\validators\EmailFieldValidator;

// Instantiate a new form
$contactForm = new Form('contactform');

// Add a text field with validation
$emailField = new TextField('email', 'Email address');
$emailField
   ->addValidator(new EmailFieldValidator())
   ->addTo($contactForm);

// Add a submit button
$submitButton = new Button('submit', 'Send', 'submit', Button::TYPE_SUBMIT);
$submitButton
   ->addTo($contactForm);

// Process the form
$contactForm->process();

if($contactForm->isSubmitted())
    echo 'Your email address is ' . $contactForm->v('email');
else
    echo $contactForm->getHTML();