Help on proto.ui

Webix JS
1

Hi all,
I have created a new text view which only permits to enter alphabetic characters.
I would like to convert entered characters to uppercase while typing. Please take a look to the following snippet

http://webix.com/snippet/c0d5752c

2

This is my workaround, is there something better?

            onTimedKeyPress: function() {
                this.setValue(this.getValue().toUpperCase());
            },
3

yes, that better