Component used to connect instances of Check components into a group.
Instances of Check have to be in the component hierarchy somewhere below the
group component.
List SITES = Arrays.asList(new String[] { "The Server Side", "Java Lobby", "Java.Net" });
// Add a dropdown choice component that uses Input's 'site' property to designate the
// current selection, and that uses the SITES list for the available options.
// Note that when the selection is null, Wicket will lookup a localized string to
// represent this null with key: "id + '.null'".
TextField doesn't permit the html so this is a simple subclass to allow this
A HiddenField is useful when you have a javascript based component that updates the form state.
Component used to connect instances of Radio components into a group.
Instances of Radio have to be in the component hierarchy somewhere below the
group component.