[Seaside] A countdown in ajax
Bob Arning
arning at charm.net
Sat Sep 18 16:18:41 UTC 2010
If you want to do it from the seaside side, you could use Comet (the
"self pusher" below).
When the question is rendered, start a timer:
startTimerProcess
timerProcess := [
[
(Delay forSeconds: howLong) wait.
self pusher javascript: [ :script |
script << (script jQuery: #whatsHisName) load html: [
:h | ...update with new content...]
].
].
timerProcess := nil.
] forkAt: Processor userBackgroundPriority.
If the timer expires, the
script << (script jQuery: #whatsHisName) ...update with new
content...
could move to the next question. If the user answers before the time
expires, then kill the timer and start a new one (if needed)
timerProcess terminate.
timerProcess := nil.
self startTimerProcess.
Cheers,
Bob
On 9/18/10 11:44 AM, Alberto Bacchelli wrote:
> Hi,
>
> I am trying to implement a sort of questionnaire.
> There is one question per "page" (each page is simply
> a div element that is rendered or not), and each page
> has a time limit.
>
> This means that I would like to show an ajax countdown in the
> page, and I want to automatically change the page when the
> time expires.
>
> I have no idea on how to implement this,
> since in my opinion it would involve a separate
> thread that takes care of the timing issue.
> And I wouldn't know what's the way to deal with
> threads in seaside.
>
> Do you have any pointer/suggestion for me?
>
> Thank you,
> Alberto
> _______________________________________________
> seaside mailing list
> seaside at lists.squeakfoundation.org
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
>
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