Bindings

When you have several components in a view you can throw events from any of them and capture those events from the container component.

So, you set the event parameter in your @Action, @MainAction or @Button element. Now when a user click on that button a new event will be thrown in the frontend which can be captured by the container element. The event will contain the data related to that component exactly as would happen with any other action.

On the container you must annotate any method with the @Listener annotation so it is called in the server side. It is the responsibility of the container/mediator element to call any method on any other component.