From 5686a0713e0444508f4c5142dd4399e3f1e2e206 Mon Sep 17 00:00:00 2001
From: Samuel Attard <sattard@slack-corp.com>
Date: Mon, 24 Jun 2019 10:17:38 -0700
Subject: [PATCH] fix: make isDarkMode correctly detect dark mode in the auto
 setting on catalina (#18949)

---
 shell/browser/api/atom_api_system_preferences_mac.mm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/shell/browser/api/atom_api_system_preferences_mac.mm b/shell/browser/api/atom_api_system_preferences_mac.mm
index 9508e182caf4d..8cd5f7f19476c 100644
--- a/shell/browser/api/atom_api_system_preferences_mac.mm
+++ b/shell/browser/api/atom_api_system_preferences_mac.mm
@@ -628,6 +628,10 @@ AVMediaType ParseMediaType(const std::string& media_type) {
 }
 
 bool SystemPreferences::IsDarkMode() {
+  if (@available(macOS 10.14, *)) {
+    return [[NSApplication sharedApplication].effectiveAppearance.name
+        isEqualToString:NSAppearanceNameDarkAqua];
+  }
   NSString* mode = [[NSUserDefaults standardUserDefaults]
       stringForKey:@"AppleInterfaceStyle"];
   return [mode isEqualToString:@"Dark"];