Add setstyle command for userChrome.css like setpref for user.js

[alerque]

In a nutshell, what I want is a way to sanely manage my entire browser experience in version controlled dotfiles. Firefox has historically made this very hard by expecting uniquely named profile directories on each machine.

I'm fine with using Firefox Sync for addons so that's covered.

I dont's use saved passwords (in favor of a KeepassXC setup), so that's covered.

Tridactyl allows me to have setpref() in my tridactylrc file, so most of what user.js would be used for is covered.

What I'm missing is a way to manage the few manual tweaks I've had to put in userChrome.css because there is literally no other place they work from. Already most of what is in that file is put there for me by Tridactyl, what I can't seem to do is place my own arbitrary rules there. For example I have these:

@import "firefox-gnome-theme/userChrome.css";

#sidebar {
  max-width: none !important;
  min-width: 0px !important;
}

I wonder if there is a way Tridactl can use it's native messenger and knowledge of where the profile directory is to take over the contents of that file entirely.

• Add a way to add/remove arbitrary bits like:

  setstyle #sidebar { max-width: none !important; min-width: 0px !important; }

  This option would enable adding CSS rules into trydactylrc and versioning them along side all other preferences.

• Add a way to save/load the css styles similar to how the RC can be dumped or sourced:

  sourcestyle mystyles.css

  This option would allow keeping a css file in the Tridactyl config that had a full version of my preferred styles.

[bovine3dom]

You can roll your own quite easily. Just follow what we're doing in guiset

tridactyl/src/excmds.ts

Line 368 in 85cdd53

const profile_dir = await Native.getProfileDir()

via :jsb using the tri.native object to access the Native you see used in guiset.

A PR adding setstyle would be welcome :)