f:ajax

Since JSF 2.0, includes the f:ajax Facelet TagHandler. This ClientBehavior adds AJAX features to any ClientBehaviorHolder that implements addClientBehavior.

Listener Usage

If listener is specified, then that method is executed when the default event (obtained from ClientBehaviorHolder and method getDefaultEventName) occurs. This is a good practice for unifying AJAX calls and decoupling from the parent component.
Link

Source Code

Liferay Faces Alloy 4.1.1 + Liferay Faces Bridge Implementation 5.0.0 + Showcase Common 4.0.0 + Liferay Faces Util 3.4.1 + Mojarra 2.2.20