Disable backspace

[Andrey]

Hello!

My application is desktop-like, so it does not need any history
support.
The problem is that when I edit a form and accidentally lose focus and
then press Backspace key to delete a character browser performs
history.back() and the whole application is unloaded losing all the
data.

How can I disable this?

Thanks!

[Ian Bambury]

You could try Window.addWindowClosingHandler(handler) and put out a 'Do you really want to leave this page?' message, or you can have a look at 

addEventPreview

Ian

http://examples.roughian.com

===============================================================
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===============================================================

2009/12/12 Andrey <min...@gmail.com>

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[Joe Cole]

Hi Andrey,

Did you ever resolve this? We have had reports of people losing data
in this way but have never been able to replicate it.

[Andrey]

Hello!

Yes, I just added:

Window.addWindowClosingHandler(new ClosingHandler() {
@Override
public void onWindowClosing(ClosingEvent event) {
event.setMessage("My program");
}
});

as Ian Bambury advised.
That solves the problem and it seems to be necessary for most of the
GWT applications as it is easy to:
1. press backspace when focus is lost from the input field;
2. press back button on the mouse if you have one.

[Andrey]

P.S.
To replicate this just open any page, say Google, in Firefox and than
go directly to your program. Your program will become the second in
the browser's history. Then just press "Back" browser button.