Is there a focus handler in javafx

In swing is a FocusManager available to get notified if the focus changes.

FocusManager.getCurrentManager().addPropertyChangeListener (...)

Is there an analogue way in javafx to get notified if the focus in the scenegraph changes?

There's none yet but you can try manually looping among the focusedProperties of your target nodes

private void handleFocusChangesStartingFromParentNode(Parent parentNode) {

    for (Node node : parentNode.getChildrenUnmodifiable()) {
        node.focusedProperty().addListener(new ChangeListener<Boolean>() {
            @Override
            public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
                performHandling();
            }
        });
        try{
            handleFocusChangesStartingFromNode((Parent)node);
        }catch(ClassCastException e){
        }
    }
}