Hi Sak,
> congratulation to qooxdoo 1.0! Great job.
>    
Thanks!
> I am still using 0.8.3 and have a problem.
>
> I want to validate a text field, but if i use the changeValue event, i am
> just getting the value of e.getData() but e.getOldData() is undefined.
>
> How to validate a simple Textfield?
qooxdoo 0.8.3 and 1.0 has a validation manger and some other things for 
form handling.

You can have a look at the example [1] from the demo browser, this demo 
shows the interaction with the validation manager. Martin has written an 
article for form handling in our manual [2] (qx 0.8.3) and [3] (qx. 
1.0). Here you can find more information about the form handling from 
qooxdoo. I hope this helps you to solve your validation problem. If you 
have further questions, please ask.
>   And why is getOldData() undefined?
>    
I can confirm that the getOldData() on the event from 'changeValue' 
return 'undefined'. I tested these qooxdoo versions: 0.8.1, 0.8.2, 0.8.3 
and 1.0. All versions return an 'undefined', I don't known the reason, 
why getOldValue() returns 'undefined'. It seems to me that this is a bug 
and I opened a bug report #3274 for that [4]. Please add yourself to CC 
to be informed about the changes.

Cheers,
Chris

[1] http://demo.qooxdoo.org/0.8.3/demobrowser/#ui~FormValidator.html
[2] http://qooxdoo.org/documentation/0.8/ui_form_handling
[3] http://qooxdoo.org/documentation/1.0/ui_form_handling
[4] http://bugzilla.qooxdoo.org/show_bug.cgi?id=3274


Christian Schmidt
Software Entwickler

1&1 Internet AG - Web Technologies
Ernst-Frey-Straße 9 · DE-76135 Karlsruhe
schmidt.christ...@1und1.de

Amtsgericht Montabaur / HRB 6484
Vorstände: Henning Ahlert, Ralph Dommermuth, Matthias Ehrlich, Thomas 
Gottschlich, Robert Hoffmann, Markus Huhn, Hans-Henning Kettler, Dr. Oliver 
Mauss, Jan Oetjen
Aufsichtsratsvorsitzender: Michael Scheeren


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