It's all Javascript so it's all going to be UTF AFAIK. As for the updates,
I think you're architecture is just wrong (you could potentially see results
from the server out of order).
A better approach would be
myCallback = new AsyncCallback<T> {
void onFailure(Throwable t) { fetchDataFromServer(); }
void onSuccess(T r) { fetchDataFromServer(); }
}
fetchDataFromServer()
{
rpcCall(myCallback);
}
That way, if you've got a slow client your not going to overwhelm them where
you're generating timer events faster than they can be handled. It should
also scale up & down gracefully with the performance of the client
browser/machine.
If you want to ensure a minimum of 2 seconds, then do:
fetchDataFromServer() {
fetchTimer.schedule(Math.max(1, System.currentTimeMillis() - lastUpdate));
lastUpdate = System.currentTimeMillis();
}
& then fetchTimer would actually do the rpc invocation.
As for the blinking, I'm not sure how you are doing it, but I would
recommend adding & removing a CSS class name (i.e addStyleName or.
addStyleDependantName). & have the CSS actually define what the visual
representation is.
On Mon, Mar 23, 2009 at 10:15 PM, denis56 <[email protected]>wrote:
>
> His,
>
> does anyone know if there are performance implications with having 2
> timers running on a single page?
>
> I am designing an application where one timer does background fetching
> of updates (2s) while the other (0.5s) updates gui elements to achieve
> blinking behavior. It is especially noticeable in IE, that the
> background updates take longer than 2s and that the browser is
> jittering and fails to respond immediately. Has anyone encountered
> something like that. Maybe having 2 timers is too much, have no idea.
>
> Also, do GWT UI components understand ISO-8859-1 encoding? I cannot
> display non-ASCII letters in a label, however, the data coming from a
> RPC invocation displays properly. strange.
>
>
> Thanks
>
>
> >
>
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