Error indicator problem

Vaadin 6 / 7 / 8 Framework UI
1

Hi.

I am experiencing strange behaviour on component, when I set error in this was

void do()
{
…

component1.setComponentError(null);
…
…
if (erroroccured) component1.setComponentError(someError);
…
}

the component doesnt have error,however, when I refresh window (via browser) error appears…

I suspect that vaadin sends only first “event” (like set error to null) to client, and ignores second call.

changing method to

void do()
{
…

…
…
if (erroroccured) component1.setComponentError(someError); else component1.setComponentError(null);
…
}

works fine. However, my recepy for error indicators was allways to clean up everything, and then turn them on case by case

bye,ivan

2

This sounds strange - the first case should work too. Could you give a complete test case for it and create bug report?

3

Thanks for response.

I am still trying to find out what exactly went wrong. As far as I was able to diagnose, removing setImmediate did the trick.

However, I believe that nomater what (with immediate or not) the picture should be the same before and after refresh button.

But, Vaadin rocks, and this little bugs I can live with.

bye,ivan

4

Hi,

Have you by any chance done the above in a Validator?

I’m asking because Validators can not make changes to the UI as a side-effect, and doing so might cause strange results, like the ones you describe.

http://vaadin.com/api/com/vaadin/data/Validator.html

The reason for this is that the Validators can be called in the paint-phase, and any changes to the UI at that point will (usually) not make it to the client - it’s ‘too late’, and doing so is likely to cause strange behavior.

Best Regards,
Marc

5

No, I am not using validators.

It turned out that problem was with layouting.

I have something like

Label1: Text1 Label2: Text2.

increasing space between Text1 and label2 provided enought space for indicator

Thanks!