Re: data received from a running servlet

On Thursday, June 21, 2012 6:36:49 PM UTC+2, Akis wrote:

Hi there. I've got a question:
i need to have a sort of "percentage progress" of the elaboration of
the servlet i call sending it data from a form. How could I do it?

If you don't *have* to support IE [1], then use XMLHttpRequest progress events [2] (and possibly use FormData [3] to grab values out of a FormPanel, so that you can keep backwards compatibility and compatibility with IE, just without the progress data)

You'll have to use JSNI, as GWT doesn't expose those features, but it's doable (we did it), and IMO it's worth it (compared to the more largely cross-browser but so much more complex "hack" that Joseph proposed)

[1] http://caniuse.com/#feat=xhr2

[2] http://www.w3.org/TR/XMLHttpRequest/#event-xhr-progress

[3] http://www.w3.org/TR/XMLHttpRequest/#interface-formdata

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