Take a look to this post: https://groups.google.com/forum/#!searchin/google-web-toolkit/onreturn/google-web-toolkit/tvBFoeW3SWw/IY_CVamzTkYJ
With this approach your message will show while there is at least one rpc call that hasn't finished. When all your rpc calls finish your message will be hidden. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
