I believe that doing this causes the list to contain one empty, but
still selectable, element. That is what I am trying to avoid--I just
want a plain empty list. I'm starting to wonder whether empty lists are
considered to not be the "Wicket way," as it seems like it should be
easier than this. Does ListChoice *intentionally* not allow for an
empty list? I expected to find something like
"allowEmpty(boolean)"...but no dice.
I could see this being a technical issue since the whole "Choose
One"/empty item thing will cause a request parameter to be submitted
with a form, whereas an empty list would submit no parameter at
all...possibly making it difficult/impossible to determine when a null
must be applied to the model during form processing. Does that have
anything to do with it?
That aside...thanks very much for your response, Kent.
--Matt
Kent Tong wrote:
Matt Jensen-2 wrote:
Is there any way to get a ListChoice to render as empty (no options)
when its choice model is empty? By default, "Choose One" appears. If I
set nullValid to true, an empty item appears which is still selectable.
I would like to have the list come up completely empty if the choice
model is empty, and I'd like to do it without creating a new component
(though obviously I will do that if it is what is needed.)
Try:
ListChoice lc = new ListChoice("lc", ...) {
protected CharSequence getDefaultChoice(Object selected) {
return "";
}
};
-----
--
Kent Tong
Wicket tutorials freely available at http://www.agileskills2.org/EWDW
