Rendering a progress window

[Forza Bo]

I am trying to give the user some feedback during a potentially lengthy initialization operation in my app. (Basically I have to perform a bunch of math on each record in a store...)

So -- what I want to do is throw a window with a progress bar, update the bar as each record is iterated, and then close the window. This is how I would expect to do this -- except the window never renders. I guess rendering is deferred until the function finishes execution?

 var progressbar = Ext.create('Ext.ProgressBar',
                {
                width: 280,
                text: 'initializing egus'
                });
            var win = Ext.create('Ext.window.Window',
                {
                title: 'Initializing Egus',
                id: "init_window",
                modal: true,
                height: 50,
                width: 300,
                layout: 'vbox',
                items: [
                        progressbar
                       ]
                }).show();
            var egus = me.getEgusStore();
            egus.each(function(egu){
                me.setMarginalCost(egu);
                progressbar.updateProgress(100.0/egus.getCount());
                });
            win.close();

[chamacs]

Does this work when run after you update the progress?

progressbar.doComponentLayout( );

[ssamayoa]

each() is too quick so window is shown then closed immediate.

[Forza Bo]

Does this work when run after you update the progress?

progressbar.doComponentLayout( );

nope.

each() is too quick so window is shown then closed immediate.

no -- the routine takes as much a few minutes. And I have tried replacing 'each()' with a simple for-in iteration, makes no difference.

It seems like rendering only occurs when the script is in a kind of idle state...

I've tried firing the initialization function from a timeout, and also from an afterrender listener for the window. I can get the window to appear, but the progress bar does nothing...

[ssamayoa]

It seems like rendering only occurs when the script is in a kind of idle state...

Sounds reasonable so, what about starting your record processing in the show event of the window?