I'm afraid you can't do that beacause of the JS security restriction...
Except by clicking on the "Stop" button of the browser
2008/12/19 jazzka <jaskas...@gmail.com>
>
> Is there any good ways to cancel file uploading from client side. I am
> using FileUpload with FormPanel and when the user open file from
> "Choose file" dialog it's automaticly start loading file to server
> side. If the file is really big and user have low upstream the loading
> will take too much time and I want offer cancel functionality.
>
> // fileUpload onEvent
> public void onEvent(Event event)
> {
> String file = fileUpload.getFilename();
> if(!file.equals(""))
> {
>
> formPanel.submit();
>
> }
>
> }
>
> // FormPanel onSubmit
> public void onSubmit(FormSubmitEvent event)
> {
> // Show loading and Cancel now
> }
>
> public void onSubmitComplete(FormSubmitCompleteEvent event)
> {
> // Hide loading and Cancel and show ok if success
> }
>
> How can I cancel form submission/file uploading?
>
> >
>
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