Make the TextView API more extensible

Is your feature request related to a problem? Please describe. Currently TextView only supports syntax highlighting through SetXXXColor(List<System.Rune> line, int idx) APIs, which doesn’t even tell us what line we are on. This blocks 2 things in our use-case:

• Syntax highlighting for languages where tokens can span multiple lines.
• Highlighting the background of the currently executed statement in a debugger, which needs a line number.

Describe the solution you’d like Expose all lines and the currently highlighted line index in some way. If the API was SetXXXColor(List<List<Rune>> lines, int lineIndex, int columnIndex), it would be a huge improvement and could technically solve both issues. Tho I understand that this isn’t too nice of an API either.

Describe alternatives you’ve considered I’m not familiar with other existing APIs that aren’t too specific to syntax highlighting, so can’t think of any.

[tznind]

To be clear, I WILL be changing cell to use either List of Runes or a string…

Well that is now complicating my work 😃 TextModel works better with Rune. With a List I can managed it but with strings the code will be much more complicate. I’m really think to create a dedicate type for TextModel. I’m not advance more with this without we clarify what we really going to do.

I think its ok to make a new Type for TextModel. Its a 2 property class so no big deal to just have TextModelCell or something if it makes things easier.

Thanks for taking this work on @BDisp I think its gonna be pretty awesome.

[BDisp]

Or we could switch TextModel to using Cell instead of Rune for the data model. That way we wouldn’t have 2 lists that could get out of sync.

This is a great idea. I’ll explore it. Thanks.