Comment 8 for bug 725688

Actually, Filters are already listening to graph events, with an 'AutoRefreshor' class. If you add or remove an element, the current filter query is reexecuted. However, as your observed the user interface is not refreshed, and that's an issue for degree filters for instance. I think we can open another bug for that.

Currently the filter auto refreshor lives in a separate thread and will refresh fiters if necessary, with a one second rate. That impacts performances, but it should be okay.