design how model values propagate into shadow dom

[rafaelw]

Right now, model value is blinding forwarded across to the ShadowRoot. This was just something simple to get working initially, but in retrospect has some elegance to it. Specifically, it leaves the implementation of the component in full control of what happens. E.g. If the component actually wants to blindly accept the model it can do that. If it wants to "alias" path values to internal path values, it can initially set it's root model as null, require some kind of attribute API which declares explicit bindings and then synthesize an internal model based on the bindings.

In any case, it's worth either making a test that asserts this pattern is workable or coming up with a different design.

[ajklein]

Sounds like the main action item here is to write some tests?

[rafaelw]

At least that. Maybe we need a separate list of design issues which beg a wider audience of opinions.

[ajklein]

We could go all-github and create a wiki page for each :). Or just a Google Doc.