How to use the vaadin loading indicator?

Hi everyone,

I'm trying to set up a PROGRESS-indicator, whenever an action on my vaadin webpage takes longer than 2sec on the server side to perform.
What I found is that there is a similiar vaadin gui component already on the webpage.
It's the loading indicator.

So my question is: How can I access the loading indicator, change it to a progress-indicator and control the amount of seconds it takes to start itself?

Thank you very much!

Unfortunately, you cannot. All That's possible is ti restyle the loading-indicator using CSS.

After how many seconds does the indicator appear?

Didn't recheck this information from Henri Sara, but he says the first stage kicks in after 300ms, the second (yellow) after 1500ms and the red one after 3000ms.