GWT JsonpRequest pending

Question

JsonpRequest misses isPending method, present at Request class. How can I check a JsonpRequest is pending? Is it bad to call cancel not knowing the JsonpRequest has finished or not? I mean, how harmful is cancelling an already canceled or completed JsonpRequest?

Answer 1

This problem has been reported previously:

https://code.google.com/p/google-web-toolkit/issues/detail?id=4867

You can follow the workaround explained in the issue (try/catch). I think there is no problem for your application cancelling a JsonpRequest (according to the issue worst scenario is an exception in browser).

Related with controlling exceptions, you might find useful this:

https://plus.google.com/+GoktugGokdogan/posts/4pwXTuzFS5x