Hi
Actually multi threading is not a matter of Qooxdoo. It's a matter of
JavaScript. Indeed the only way to parallelise procedures is web worker.
But in your case you should rethinking your code. As I could see in a quick
overview you are calling many timeouts at the same time. That means after 2
seconds all of your timeout functions will be called. So just last one will
have a visible effect.
I guess it's better to start one short time out which will update the view and
call the same function again in a timeout till a condition is guilty.
If you desire to use a Qooxdoo method to initialise an interval take a look on
qx.event.Timer
Hope I could help
Regards Mustafa
Von meinem iPhone gesendet
Am 03.08.2012 um 20:24 schrieb "Eric Paul" <ericallenp...@hotmail.com>:
> Is there a way to display a progress bar while performing a long running
> task?
>
> Generally when I do this it requires 2 threads, does such a thing exist in
> qooxdoo?
>
> Here's what I have so far:
>
> //console.clear();
>
> // Document is the application root
> var root = this.getRoot();
> var box = new qx.ui.layout.VBox();
> var container = new qx.ui.container.Composite(box);
>
> var pb = new qx.ui.indicator.ProgressBar(0, 100);
> var lblPrimary = new qx.ui.basic.Label();
> var lblSecondary = new qx.ui.basic.Label();
> var totalCount = 1000;
>
> // Create a button
> var button1 = new qx.ui.form.Button("GO",
> "icon/22/apps/internet-web-browser.png");
> button1.setMaxWidth(100);
>
> root.add(container, {left:0,top:0});
> container.add(lblPrimary);
> container.add(pb);
> container.add(lblSecondary);
> container.add(button1);
>
> lblPrimary.setValue("Please Wait...");
> lblSecondary.setValue("Completed: 0 (0%)");
>
> box.setSpacing(10);
> container.setPadding(20);
>
> //get real time change from the progressbar
> pb.addListener("change", function(e) {
> lblSecondary.setValue("Completed: " + pb.getValue() + " (" + e.getData() +
> "%)");
> lblSecondary.setTextColor("black");
> });
>
>
> // Add an event listener
> button1.addListener("execute", function(e) {
>
> for(i = 0; i<totalCount; i++)
> {
> setTimeout(function () {
>
> var percentComplete = i / totalCount * 100;
> pb.setValue(percentComplete);
> lblSecondary.setValue("Completed: " + i + " (" + percentComplete +
> "%)");
>
> }, 2000);
>
> }
>
> });
>
> //when complete make the info text green
> pb.addListener("complete", function(e) {
> lblSecondary.setTextColor("green");
> });
>
>
> Everything works as advertised, but I really want my for loop to update the
> progress bar and labels as it is performing the work.
>
> Thanks,
>
> -Eric
>
>
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