High performance text component

[Gaja Sutra]

> (I'm finally able to edit the openjfx wiki!)
>
> We are still in a very early stage but this is what we are planning for Rich Text:
>
> https://wikis.oracle.com/display/OpenJDK/Rich+Text
>
> Let me know if you have any suggestions or concerns.
>
Not a suggestion/concern for a first draft of Rich text API, but 
probably not fully exempt of usefulness: to keep possible as a future 
problem, in a long time, after all usual features like vertical 
alignment, vertical text and possibly even after boustrophedon.

How a component builder can implement an embedded span-like object, like 
your image, but supporting linebreaking?

By example, a component displaying mathematical formulas can support 
linebreaking, particularly on small screens, cf. [1, 2] for proving the 
non-empty interest in this problem.

I am not asking for a response, just signalling a non-usual possible 
future problem to not forget (and keep open).

I don't see any problem with current API for adding, in the future, this 
feature (e.g. by implementing an interface if supporting linebreaking), 
but I suggest this open problem when seeing your embedded objects in 
rich text and asking myself how to embed something other.

Most expected impact will not be in API, but in implementation: to avoid 
complex entanglement of hyphenation and text and let future extensions 
be possible without large refactoring of code.
Sorry for exotic mail.
Gaja.

[1]: http://www.dessci.com/en/products/mathplayer/tech/mathml3-lb-indent.htm
[2]: linebreaking (fourth row of table) in 
http://www.maths-informatique-jeux.com/blog/frederic/?post/2012/09/01/Mozilla-MathML-Project%3A-Roadmap