As part of my work for https://issues.jboss.org/browse/GUVNOR-2181 I need to be able to open a new (or pre-existing) Guided Decision Table in an "already open" WorkbenchEditor.

I will use events to decouple the request ("open in") from the handler (Guided Decision Table editor); however I need to be able to know whether the event should be fired.

I could just fire the event and any "open" editors would receive it; however I don't want to broadcast the event to all open editors; since it only makes sense to open the file in a single editor.