HTML's not good at windows, apps, doesn't have any sort of concept of a widget and has the kind of layout rules you'd have a tough time beating if you were sitting there trying to be deliberately malicious to future programmers.
It's not a good idea, but given the abysmal state that desktop apps seem to be in at the moment[1], it's probably the least bad idea.
[1] Been about 5 years since I did a desktop app, but if anything they look to be getting worse. WPF, flop. Flex, flop. GTK+ looks poo. If I had to do a cross platform desktop app, I wouldn't even know where to start.
I agree with you, but I don't think most of those things are really vital for a great text editor. For the most part, it's just a giant window with your text in it, maybe a sidebar or two. Most of the magic happens under the hood. That's why I think this is a good idea.
Dunno about cross-platform app development, but Cocoa on OSX is pretty nice. QT isn't bad either, from what I've tried.
It's not a good idea, but given the abysmal state that desktop apps seem to be in at the moment[1], it's probably the least bad idea.
[1] Been about 5 years since I did a desktop app, but if anything they look to be getting worse. WPF, flop. Flex, flop. GTK+ looks poo. If I had to do a cross platform desktop app, I wouldn't even know where to start.