From 28698126bd825aff21cae9ffd15cf83e169051b0 Mon Sep 17 00:00:00 2001
From: Matthew_Cash <matthew@matthew-cash.com>
Date: Sat, 25 Mar 2023 13:57:47 -0700
Subject: [PATCH] thunderbird: add userChrome and userContent options

Add an option to the Thunderbird module that allows specifying CSS for
userChrome and userContent styling

PR #3808
---
 modules/programs/thunderbird.nix              | 28 +++++++++++++++++++
 .../programs/thunderbird/thunderbird.nix      | 14 ++++++++++
 2 files changed, 42 insertions(+)

diff --git a/modules/programs/thunderbird.nix b/modules/programs/thunderbird.nix
index 8c5a4b868..efd3b7821 100644
--- a/modules/programs/thunderbird.nix
+++ b/modules/programs/thunderbird.nix
@@ -157,6 +157,28 @@ in {
                 example = true;
                 description = "Allow using external GPG keys with GPGME.";
               };
+
+              userChrome = mkOption {
+                type = types.lines;
+                default = "";
+                description = "Custom Thunderbird user chrome CSS.";
+                example = ''
+                  /* Hide tab bar in Thunderbird */
+                  #tabs-toolbar {
+                    visibility: collapse !important;
+                  }
+                '';
+              };
+
+              userContent = mkOption {
+                type = types.lines;
+                default = "";
+                description = "Custom Thunderbird user content CSS.";
+                example = ''
+                  /* Hide scrollbar on Thunderbird pages */
+                  *{scrollbar-width:none !important}
+                '';
+              };
             };
           }));
       };
@@ -276,6 +298,12 @@ in {
       "${thunderbirdConfigPath}/profiles.ini" =
         mkIf (cfg.profiles != { }) { text = generators.toINI { } profilesIni; };
     }] ++ flip mapAttrsToList cfg.profiles (name: profile: {
+      "${thunderbirdProfilesPath}/${name}/chrome/userChrome.css" =
+        mkIf (profile.userChrome != "") { text = profile.userChrome; };
+
+      "${thunderbirdProfilesPath}/${name}/chrome/userContent.css" =
+        mkIf (profile.userContent != "") { text = profile.userContent; };
+
       "${thunderbirdProfilesPath}/${name}/user.js" = let
         accounts = filter (a:
           a.thunderbird.profiles == [ ]
diff --git a/tests/modules/programs/thunderbird/thunderbird.nix b/tests/modules/programs/thunderbird/thunderbird.nix
index ee16efa06..776be0f70 100644
--- a/tests/modules/programs/thunderbird/thunderbird.nix
+++ b/tests/modules/programs/thunderbird/thunderbird.nix
@@ -35,6 +35,12 @@
       first = {
         isDefault = true;
         withExternalGnupg = true;
+        userChrome = ''
+          * { color: blue !important; }
+        '';
+        userContent = ''
+          * { color: red !important; }
+        '';
       };
 
       second.settings = { "second.setting" = "some-test-setting"; };
@@ -60,5 +66,13 @@
     assertFileExists home-files/.thunderbird/second/user.js
     assertFileContent home-files/.thunderbird/second/user.js \
       ${./thunderbird-expected-second.js}
+
+    assertFileExists home-files/.thunderbird/first/chrome/userChrome.css
+    assertFileContent home-files/.thunderbird/first/chrome/userChrome.css \
+      <(echo "* { color: blue !important; }")
+
+    assertFileExists home-files/.thunderbird/first/chrome/userContent.css
+    assertFileContent home-files/.thunderbird/first/chrome/userContent.css \
+      <(echo "* { color: red !important; }")
   '';
 }