Waiting screen - how to ?

[Stefan Geelen]

Hi,
I would like to simulate a waiting screen using servlets.
When a user clicks on a button I excecute following:

  
input type="button" on_Click="window.open('/servlet/calculate','calculating','width=420,height=125');"

The servlet will
1) Send a reponse back to the 'calculating' window indicating the user has to wait.
2) Starts up a Thread that performs the calculation (well in fact, it is generating a .pdf document).
Now my problems are following:
1) When the generation is finished I need to close the waiting screen and
2) The .pdf needs to send back to the main window.
I don't have any idea how to do this.
Any suggestions ?
Thanks ,
Stefan

[Pradeep bhatt]

www.onjava.com/pub/a/onjava/2003/ 06/11/jsp_progressbars.html

[Tejpal Singh]

Originally posted by Pradeep Bhat:
www.onjava.com/pub/a/onjava/2003/ 06/11/jsp_progressbars.html

Pradeep the link does not work...
Maybe it should be...Progress Bars or http://www.onjava.com/pub/a/onjava/2003/06/11/jsp_progressbars.html
[ September 11, 2003: Message edited by: Tejpal Singh ]

[Stefan Geelen]

Hi,
thanks for the quick response...
but unfortunately this article does not solve my questions.
It is not a problem for me to open a pop-up displaying a waiting message.
I can even close the waiting window (by letting this waiting window refresh automatically (calling again the servlet) and when the Working Thread is FINISHED closing this window by sending some Javascript to the window.
The problem remains is how to automatically display the PDF in the main window.
Stefan

[Juanjo Bazan]

This old JW article should help you:
Streaming output
HTH