On Mon, 17 Feb 2025 22:25:04 GMT, John Hendrikx <jhendr...@openjdk.org> wrote:
> Well, I don't think it is reasonable or desired to have correct old values > for these, as it would basically mean we'd need to clone the collection > involved to give you a correct old value. The purpose of the old value here > would be so you could do a diff and see what's changed, but these properties > have their own callbacks for exactly that purpose. IMHO, it was a mistake to > base these on properties; at most they should have provided invalidation + > their custom diff-style callback. We could have `ChangeListener` only be called when the list instance is changed via `listProperty.set(list)`, but not when the content is replaced with `listProperty.get().setAll(list)`. I don't think that the current behavior makes any sense at all. ------------- PR Comment: https://git.openjdk.org/jfx/pull/1081#issuecomment-2664188636
