Re: Ignoring requestFactory responses on page reload

Thomas,

Thank you for the detailed answer (as always) :)

Cheers
Samin

On Thursday, June 19, 2014 9:01:21 PM UTC+10, Thomas Broyer wrote:

If you go to http://jsfiddle.net/vX8uK/ you'll see that you'll have an onbeforeunload event (in GWT, Window.ClosingEvent) before the request is abort with status=0, and then you have the onunload (in GWT, CloseEvent).

That means you can listen to Window.ClosingEvent and set a flag to ignore subsequent errors. In case you have a prompt in Window.ClosingEvent added by other means (e.g. Places & Activities), then you'll have to handle the case where the user canceled the navigation and unset your flag; you can do that, for example, by resetting the flag in case of successful response, and/or listen to some mouse or keyboard events.

To centralize the flag processing, use a custom RequestTransport extending the DefaultRequestTransport and wrapping the RequestCallback to deal with the responses (at the RequestBuilder level, before they're transformed to RequestFactory's Receiver calls)

On Thursday, June 19, 2014 8:40:14 AM UTC+2, Samin Pour wrote:

Hi Alberto,

Thanks for your tip :) Unfortunately I can't inform the user to wait (I mean the product description is to let the user to do what ever they want without disturbing them) So I need to find the way to let the Receiver class not to wait for the response.

Any ideas?

Thanks again
Samin

On Tuesday, June 17, 2014 5:04:50 PM UTC+10, Alberto Mancini wrote:

Hi Samir,

the page refresh should call the closinghandler cause a refresh is a page unload followed by a load and the closing handler essentially

is a listener to 'onbeforeunload' event.

Cheers,

   Alberto

Note:

there are issues with the returned message so if you go for a closing handler read this also:

http://stackoverflow.com/questions/5398772/firefox-4-onbeforeunload-custom-message

On Tue, Jun 17, 2014 at 7:10 AM, Samin Pour <sam...@gmail.com> wrote:

Thanks Alberto :)

Isn't this handler triggered for closing the Window? I'm just refreshing a page which doesn't fire the associated event. Or am I missing something?

Thanks again
Samin

On Friday, June 13, 2014 10:31:25 PM UTC+10, Alberto Mancini wrote:

Hi,

may be not a solution in your context but a choice can be also using

http://www.gwtproject.org/javadoc/latest/com/google/gwt/user/client/Window.html#addWindowClosingHandler%28com.google.gwt.user.client.Window.ClosingHandler%29

to inform the user that should wait until the response is ready.

I think it is at least less dangerous than ignoring eventual errors.

Alberto.

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