GWT Custom Event Handler

Question

Can someone give me an example of creating a custom set of an Event and a Handler. Say you have a Person object that you want your widgets to know if it got updated.

Answer 1

You might want to have a look at the ValueChangeHandler and ValueChangeEvent in GWT 1.6. Those might work for what you're trying to do.

Answer 2

One additional comment: if you try do to something similar to react in a main application to an event fired from a custom GUI component (like a composite etc.), I think you have to wire the main app explicitly to handle the component's event:

yourComponent.addHandler(this, YourEvent.TYPE);

where "this" is the class that implements your custom handler interface.