Hi,
my webapp asynchronously kicks of a a process that takes some (1-2
minutes) time till a result is provided. After the kickoff and before
the result is available I'd like the Page to reload itself untill the
result is there, stopping the reload.
So far I tried two approaches.
First I worked with the pages meta tag. I controlled it's attributes
using AttributeModifier.
something like:
Markup:
<meta wicket:id="refresh" id="refresh" content="" />
Code:
final Label refresh = new Label("refresh");
final AttributeModifier http_equiv = new AttributeModifier(
"http-equiv", true, new Model("refresh")) {
private static final long serialVersionUID = 1L;
@Override
public boolean isEnabled() {
return !isRequestTokenDone();
}
};
final AttributeModifier content = new AttributeModifier("content",
true, new PropertyModel(this, "content")) {
private static final long serialVersionUID = 1L;
@Override
public boolean isEnabled() {
return !isRequestTokenDone();
}
};
refresh.add(http_equiv);
refresh.add(content);
add(refresh);
This was ok, except that the performance was bad. The whole page is
reloaded, even on localhost this took 2 seconds. Too much.
On the second aproach I added a AjaxSelfUpdatingTimerBehavior to the
panel I wanted to reload.
myPanel panel = new MyPanel("myPanel");
panel.add(new AjaxSelfUpdatingTimerBehavior(Duration.seconds(10)));
add(panel);
Performance is grat now, but I don't see a way for disabeling the
UpdateBehaviour, once the result is available.
Any ideas?
Martin
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