Was trying to stop people typing into the combobox anyone know how this is done in Vaadin 10?
Not supported at the moment. For such use cases the [Dropdown Menu component]
(https://vaadin.com/components/dropdown-menu) is recommended, when the number of options is lower and filtering is not necessarily needed.
It doesn’t have a [Java/Flow API]
(https://github.com/vaadin/vaadin-dropdown-menu-flow) yet, but it is coming, see the roadmap: https://vaadin.com/roadmap
Thanks Jouni!