Hi,
On Fri, Jun 28, 2019 at 6:25 PM Boris Goldowsky <bgoldow...@cast.org> wrote: > What’s the best practice for a list (built in this case with a > RefreshingView) that has a header, which should be hidden if the list is > empty? > > The most obvious would be to wrap <wicket:enclosure> around the whole > thing, but the RefreshingView is still considered visible even when empty, > so that doesn’t work by itself. > > I tried adding an onConfigure method to set visibility based on the > repeater’s size(), but the children don’t actually get added to the > repeater until after onConfigure runs, so size() always returns 0. > Actually the children are added in org.apache.wicket.markup.repeater.AbstractRepeater#onBeforeRender(), so you need to override this one, call super.onBeforeRender() and then check the size. I'd recommend you to use EnclosureContainer instead of <wicket:enclosure> because the latter has many known bugs. > > There are ways I can brute force this of course. But is there a clean, > general solution? > > Boris > >
