LoginOverlay prefill username


My use cas is:

I want to generate a link to my login pageThe. The link hat got url parameter, e.g. username. That works very fine.

The link goes to my login page using Vaadin LoginOverlay. That works.

Now I want to prefill the username of the LoginOverlay with the username given by the url parameter.

Then I want to disable input for username field or better I want to hide this field.

I do not have access to inner components from LoginOverlay.

Is there a way to solve this problem.

I do not want to generate an extra gui. I want to reuse the LoginOverlay.

Thank you very much,