Is there prefered way between the methods below?
if (condition) {
component.setVisible(false);
}
OR
component {
@Override
public boolean isVisible() {
return !condition;
}
If I use the above I can group my components and set them with the
setVisible method depending on the condition, with the last method I
have to add the the condition to every component.
-----Oorspronkelijk bericht-----
Van: Daan van Etten [mailto:d...@stuq.nl]
Verzonden: woensdag 1 april 2009 11:20
Aan: users@wicket.apache.org
Onderwerp: Re: clean way to add visibility constraints
You could write a method that sets the visibility on the relevant
components.
The Form components have to be visible to that method though (or you
have to use a visitor).
Regards,
Daan
Op 1 apr 2009, om 08:32 heeft Boydens Joeri (OZ) het volgende
geschreven:
> Hi,
>
>
>
> I have this page where I have different components that need to be
> show
> or hidden, depending on the value of some model fields. I implemented
> this by overriding the isVisible method of the components. Now I was
> wondering if there is a less verbose way of handling this? (I can't
> group the components because it's not possible in the html markup).
>
>
>
> item.add(new TextField("value") {
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() > 0;
>
> }
>
> });
>
>
>
> item.add(new
> Label("article.numberOfArticlesLabel", "Geen beschikbaar") {
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() <= 0;
>
> }
>
> });
>
>
>
> item.add(new
> Label("article.description"));
>
>
>
> item.add(new
> WebMarkupContainer("participantInfo") {
>
> public boolean
> isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() > 0;
>
> }
>
> }
>
> .add(new
> Label("article.numberOfRequiredParticipants"))
>
> .add(new
> Label("article.maximumNumberOfParticipants")));
>
>
>
>
>
> item.add(new Link("contactLink"){
>
> @Override
>
> public void onClick(){
>
> //TODO : go to correct
> page
>
> }
>
> @Override
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() <= 0;
>
> }
>
> });
>
>
>
>
>
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