gwt-polymer-elements | Polymer Web Components for GWT | Web Framework library

I'm trying to follow the basic hello world examples that use GWT Polymer with the UiBinder Elements. The basic GWT example stub generated code handles the key to specify input. I thought it would be easy to have an event handler and check the key that was pressed.

I'm probably doing something very basic wrong. Maybe some import I'm not doing or Polymer.importHref I forgot to include.

The event does trigger but I get undefined when I attempt to get the key from the event. I guessed using "keypress" as the other examples use "click" and it did trigger but what is the right type to use? I outputed some of the values and get the following:

event.getDetail().getKey() -> undefined

event.toString() -> [object KeyboardEvent]

nameFieldInput.getValue() ->

nameFieldInput.getInnerHTML() -> show what was typed before processing the current key

I also need to know what the string value or Constant to use for the key to do the test. Please advise how to make this work using the event listener.

Here is my current code: