Description
This is a base class for all QuickForm elements. It defines the API that is implemented by all the child classes representing actual form elements. You should use these elements, there is no need to directly instantiate HTML_QuickForm_element.
If you would like to create your own element to use with QuickForm, you should extend this class or one of its descendants and make sure to implement all methods defined here. There is also toHtml() method defined in HTML_Common that should be implemented.