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How to add component a MenuBar in Vaadin UI?
It is possible?
Thanks for help.
Sorry to say, it is not possible. What kind of component you were hoping to add?
CheckBox, TextField, DateField...
any idea how I can do that? :)
No idea. You could try to make your own customization to MenuBar client-side, but that's a rocky road IMO. Maybe have the components in a separate popup instead of a sub-popup of a MenuBar.
Perhaps the Tree is possible solution?
I don't think Tree supports rendering components.