More like the generally accepted concepts of "selected, active, focus, style, change", and declaring either a visual response or "onEvent" response. A nested h

More like the generally accepted concepts of "selected, active, focus, style, change", and declaring either a visual response or "onEvent" response. A nested hierarchy, components may be complicated internally but expose a simple input and output interface. And yes, something a little more high level than `if key == 'a'` means you're focusing more on the data and display rather than the method. Different abstractions for different use cases, I guess. Any recommendations?