Re: addWindowClosingHandler only working in IE

Note that the actual message will be ignored by more and more browsers, which will only display a generic popup whenever the message is non-null (or not empty).

On Friday, September 14, 2018 at 11:03:39 AM UTC+2, Frank wrote:

Okay....

Now I figured out how this works. You need to set a message to the event.
Didn't figured this out reading the javadoc.

Window.addWindowClosingHandler(event ->
{
   if (Grid.hasUnsavedEdits()) event.setMessage(I18NMessages.getMessage(5107));
});

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