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Do you have to write your UI layout in Java or can you use Vaadin Designer?
If it is possible is there an example of how to wire up the design with Spring Navigator?
This leads to a bigger question, where can you use Vaadin Designer? Can it be anywhere you create a layout? Only for certain types of layouts?
You can use Designer, but some Java is required. Problem is that default ComponentFactory uses newInstance() to instantiate components. You need a custom factory to create layouts as spring beans.
Here's a small sample: https://github.com/johannesh2/springnavigation