Well, I've been burning the midnight oil trying to figure out how to
issue the stop() command to a PeriodicUpdater. I've come up with a
solution that uses setTimeouts to call the stop function. I think my
solution is very kludgey... especially since I'm new to Javascript +
Prototype.
Can anyone let me know if the below code is at all proper? :)
---------
Summary: A PeriodicUpdater calls a server script which returns the
percent finished of a process as a JSON encoded string in a x-json
header. When the percent is > 10, I'd like to STOP the periodicupdater
from making any further AJAX calls.
The problem: If I issue pb.stop() in the onSuccess function [pbCheck()],
nothing happens. The script continues!
The workaround: Set percent value using pbCheck, Use setTimeout to
continually poll pbKill() which checks the percent value & if it's
greater than 10, issues STOP to updater before destroying it (when a
STOP is recieved, the onComplete function is called[pbClean()]).
<script type="text/javascript">
// <![CDATA[
if (!pb) {
var pb =
new Ajax.PeriodicalUpdater("ajaxUpdate", "ajax_mailingStatus.php", {
asynchronous:true,
frequency : 2,
onSuccess: pbCheck,
onComplete: pbClean
});
}
var percent = 0;
function pbCheck(request,json) {
percent = json.percent;
}
setTimeout(pbKill,5000);
function pbKill() {
if (percent > 10) {
pb.stop();
}
else {
setTimeout(pbKill,5000);
}
}
function pbClean() {
pb = null;
}
}
// ]]>
</script>
------
Thanks,
~ Brice Burgess
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