On 2/13/07, Martijn Dashorst <[EMAIL PROTECTED]> wrote:
> On 2/14/07, Scott Lusebrink <[EMAIL PROTECTED]> wrote:
> > the situation is that I have a page which takes a LONG time to get data for
> > and until that page has complete the back button or navigating to any other
> > page wont work. is there any way to prevent this
>
> Let the data in the page be aggregated in a background thread which
> you poll using ajax. Then you can show a progress indicator, and
> replace the progress indicator with the new data.
And if you don't want to use Ajax for whatever reason, you can achieve
the same by using a shared resource which you then display in a frame:
public class FooExport extends WebResource {
public static class Initializer implements IInitializer {
public void init(Application application) {
SharedResources res = application.getSharedResources();
res.add("foodata", new FooExport());
}
}
public FooExport() {
setCacheable(false);
}
@Override
public IResourceStream getResourceStream() {
MySession s = (MySession)Session.get();
String uid = s.getUid();
CharSequence bar = DataBase.getInstance().getDataForFoo(uid);
return new StringResourceStream(bar, "text/plain");
}
}
But ajax would be a lot easier/ more elegant :)
Eelco
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