JavaFxObservable should provide a method to observe Node "event filters"

[pigelvy]

Similar to JavaFxObservable#eventsOf(Node, EventType<T>), JavaFxObservable should have a method to observe Event objects during the capturing phase of event delivery. Internally, such method would use Node#addEventFilter(EventType, EventHandler) instead of Node#addEventHandler(EventType, EventHandler).

[thomasnield]

Huh... I don't think I've used events in that stage before. I'll take a look unless you want to put in a PR.

[thomasnield]

What would you propose the factory be called? Not quite clear what we are trying to accomplish here from an Rx perspective...

[pkrysztofiak]

If there is still any chance to add it I would suggest JavaFxObservable.eventsOf(Node, EventType, Phase)
where enum Phase {CAPTURING, BUBBLING} (as described https://docs.oracle.com/javafx/2/events/processing.htm#CEGJAAFD) or enum Phase {FILTERING, HANDLING)

[thomasnield]

@pkrysztofiak noted. I'm trying to get 2.11.x out (having BinTray deployment issues #73 ) and then I will start implementing these new features in both 2.8.x and 2.11.x.