I’m trying to show information when a user hovers over treeview items. My first option have been tooltips, but it seems that they don’t admit too much customization (1).
My problem is that the content I’m trying to show is too long. Actually, is a RSpec test result and they are formed by a message, a backtrace and a class. My ideal would be something similar to a tooltip (that appears and disappears) but being able to show a more complex markup.
What would be your approach to this?. I’d like to hear all opinions, even if you wouldn’t consider tooltips.