you can make 2 labels:
DateLabel
TimeLabel
and both those labels have the getConverter() merthod overridden where you
do that formatting.
Then you dont have to convert it on construction time. But only on render
time (changes wil be seen then and you
can use loadable detachable models so that product will not be stored in the
session)
johan
On 11/24/06, Francisco Treacy <[EMAIL PROTECTED]> wrote:
Thanks for your answers, I finally found the "best practice" solution to
my problem, well, I think so. Remember I was looking for a way to "switch"
on/off a part of my page (that of course includes declared components in
page class and in html markup).
I'll try to explain why some approaches aren't the best, imho.
Wanting to "disable" certain components, I think it's quite a repetitive
task to set empty strings to each and every component I want to hide. Here
we only have one, but imagine having ten or twelve...
>
> if (product.getPhoto() != null) {
> add(new Label("product-photo-date", someDateModel));
> } else {
> add(new Label("product-photo-date", ""));
> }
>
The same for this, I have to manually override each and every component:
> newLabel("product-photo-date",
> CommonUtil.getFormattedDate(product.getPhoto().getDateTime())) {
> public boolean isVisible() {
> return product.getPhoto() != null;
> }
> }
>
I couldn't get ideas in
http://cwiki.apache.org/WICKET/create-dynamic-markup-hierarchies-using-panels.htmlto
work.
Wicket complained anyway.
Well... I just came by Fragments... the magical word... that solved my
issue:
Fragment photoFragment = new Fragment("photo-panel",
"photo-fragment");
if (product.getPhoto() != null) {
photoFragment.add(new Label("product-photo-date",
someDateModel));
add(photoFragment);
} else {
add(new Label("photo-panel")).setEnabled(false);
}
So like this we're choosing in Java whether to include a fragment (and its
childs) or not.
<span wicket:id="photo-panel">[photo-panel]</span>
<wicket:fragment wicket:id="photo-fragment">
<span
wicket:id="product-photo-date">[product-photo-date]</span>
</wicket:fragment>
And that's all to it.
Regards,
Francisco
PS:
> add(new Label("product-photo-time", new PropertyModel(product, "
> photo.dateTime")));
Yeah, but I needed to handle the Date outputting it formatted with a
SimpleDateFormat. That's why I have CommonUtil.getFormattedDate(
product.getPhoto().getDateTime()).
> But doesn't the product description of dates change after creation of
that
> label?
> and also should product be kept into memory?
No, it's just the original photo date coming from exif data, and it
needn't be altered. Thanks for the info cause I'm planning to use it
elsewhere.
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