public function show()
 {
     $val = '';
     if (parent::get_value()) {
         $val = 'checked="checked';
     }
     print '<p><input type="checkbox" name="' . parent::get_name() . '" ' . $val . '" ' . parent::get_required() . ' ' . parent::get_readonly() . ' ' . parent::get_disabled() . ' ' . parent::get_parameters() . ' />' . parent::get_label() . '</p>';
 }
 public function show()
 {
     print '<label>' . parent::get_label() . '</label>';
     print '<textarea name="' . parent::get_name() . '" class="campo campo-texto-grande ui-widget-content ui-corner-all" ' . parent::get_required() . ' ' . parent::get_readonly() . '>' . $this->text . '</textarea>';
 }