I've created a prototype to explore the API requirements to configure
the visual options we have:
Also included that on the wiki page, in an iframe:
This poses a lot of challenges: Does the user decide where the tooltip
is placed, if so, how does he specify the placement? Using an API
similar to positionTo? If so, how do we then deduce the right css
class for the arrow? What happens when collision detection springs to
action - how do we know when that happens, and how can we reposition
the arrow accordingly?
Considering all that I think that its worth asking: Is it an option to
start with a simple tooltip widget that doesn't support the
directioned arrow? A themable tooltip with positionTo underneath still
provides a lot of value.