Starts validation for the element and all subelements according to the rules laid out in the element's validator.
Class Details
[line 24]
Wraps a form-reset-button.
Clicking this button resets the form to the state it was in at the last pageload. This widget may be of little help when developing with HtmlForm, since each form-cycle is a reload, refreshing the reset-state. But there are ways to make this work, so it's included for means of completion.
This element is not wrapped into a row, but should be inserted into a container-widget.