Extension of Vaadin's DateField ui component. People usually come up with issue of some not yet implemented features in Vaadin. Such as not support with 12h and 24h switch of DateField. So Custom UI aims to extend the ability of common UI components. It's not fully all issues right now.You can report your issue, I'll help to add your feature if I can. Features: 1. Support 12h and 24h switch of DateField