To get a better handle on why things are taking so long, go grab the
SpeedTracer extension for chrome at http://code.google.com/speedtracer

After you take a quick peek at your app, you can modify your app and
annotate the timeline by making a JSNI call to $wnd.console.markTimeline()
as described here:

http://code.google.com/webtoolkit/speedtracer/logging-api.html

It will give you some insight as to what is going on in the browser while
you are waiting for that popup.

On Tue, Oct 19, 2010 at 2:02 PM, Ben <ben.falc...@gmail.com> wrote:

> Hi - I have created a Maps App with GWT involving PopupPanel's in
> various roles - particularly i'd like to use one for a 'Please wait'
> window while the Map gets updated. So, what i'm doing in p-code is:
>
> - define a PopupPanel P saying 'Please Wait'
> - define a button B to do something
> - in B's onclick() method do the following steps:
>  1. immediately call B.show();
>  2. then go ahead and process many Map elements, setting them
> visible(false), etc.
>  3. then return.
>
> The issue is that popup P is NOT showing immediately when B is
> clicked.. sometimes it shows only after a few moments as if it is
> struggling to compete with the subsequent map operations (there are
> *many* elements being manipulated in step 2, but only after step 1, i
> thought!).  The FIRST TIME I click the popup seems to be rendered
> promptly. AFter that the popup doesnt render in time to really serve
> as a 'please wait' popup..!
>
> Am i missing something with regard to sync'ing, or with the show()
> method or .setVisible(true)? (i've tried that too).
> Code snippet below:
>
> REDRAWING_DIALOG = new DialogBox(false);
> REDRAWING_DIALOG.setStyleName("gwt-PopupPanel");
> HTML message4 = new HTML(".. html here ");
> REDRAWING_DIALOG.setPixelSize(280, 100);//w,h
> REDRAWING_DIALOG.setAnimationEnabled(true);
> REDRAWING_DIALOG.setPopupPosition(400,250);
> REDRAWING_DIALOG.setWidget(message4);
> REDRAWING_DIALOG.hide();
>
> ...
>
> key_ok_button.addClickListener(new ClickListener() {
>  public void onClick(Widget sender) {
>
>  //show the 'Please wait' dialog
>  /*  THIS SEEMS TO LAG AND THE DIALOG DOES NOT SHOW PROMPTLY! */
>  REDRAWING_DIALOG.show();
>
>  if(MY CONDITIONS){
>    if(showLS.isChecked())for(int i=0;i<LS.size();i++)
> ((Marker)LS.elementAt(i)).setVisible(true);
>
>  //now hide the dialog after a timeout
>  /* NO PROBLEMS WITH HIDING IT */
>  timeoutTimer = new Timer() {
>        public void run() {
>        REDRAWING_DIALOG.hide(); //hide the 'please wait' dialog
>        timeoutTimer = null;
>        }//run
>    };
>   timeoutTimer.schedule(3 * 1000); // timeout is in milliseconds
>   return;
> }//no systems selected
>
> --
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>


-- 
Eric Z. Ayers
Google Web Toolkit, Atlanta, GA USA

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