How to show castbars for all visible nameplates

[Dawn]

I was thinking about how to display castbars and spell icon for all visible nameplates.

Since this is way more tricky than the stuff I normally do I need some help.

Brainstorming so far:

* cache all nameplates in a table
* check on events (COMBAT_LOG_EVENT_UNFILTERED?!?) if a cast starts
* associate the cast with the proper nameplate by comparing the check above with the cached nameplates
* create a castbar and spell icon for unit's that are casting and display the cast
* show the cast and it's icon

I'm kinda stuck here, not sure how to get rid of cached nameplates or if this is even necessary and if anything of what I said above is correct. I tried to take a glimpse look at how TidyPlates does it, but didn't got it so far, since everything is so split up.


Anyway, I want to use the code with my existing nameplate addon(s), if possible. Which more or less re-skin blizzards plates. So a "simple solution" without the use of additional libraries would be preferable.