🍎 Add 'isDarkModeEnabled' to app api

atom/browser/api/atom_api_app.cc

@@ -370,6 +370,7 @@ mate::ObjectTemplateBuilder App::GetObjectTemplateBuilder(
 #if defined(OS_MACOSX)
       .SetMethod("hide", base::Bind(&Browser::Hide, browser))
       .SetMethod("show", base::Bind(&Browser::Show, browser))
+      .SetMethod("isDarkModeEnabled", base::Bind(&Browser::IsDarkModeEnabled, browser))
 #endif
 #if defined(OS_WIN)
       .SetMethod("setUserTasks",

atom/browser/browser.h

@@ -83,6 +83,9 @@ class Browser : public WindowListObserver {
   // Show the application.
   void Show();
 
+  // Check if Dark Mode enabled.
+  bool IsDarkModeEnabled();
+
   // Bounce the dock icon.
   enum BounceType {
     BOUNCE_CRITICAL = 0,

atom/browser/browser_mac.mm

@@ -26,6 +26,11 @@ void Browser::Show() {
   [[AtomApplication sharedApplication] unhide:nil];
 }
 
+bool Browser::IsDarkModeEnabled() {
+  NSString *mode = CFBridgingRelease(CFPreferencesCopyValue((CFStringRef)@"AppleInterfaceStyle", kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesCurrentHost));
+  return [mode isEqualToString: @"Dark"];
+}
+
 void Browser::AddRecentDocument(const base::FilePath& path) {
   NSString* path_string = base::mac::FilePathToNSString(path);
   if (!path_string)

docs/api/app.md

@@ -461,6 +461,10 @@ if (browserOptions.transparent) {
 }
 ```
 
+### `app.isDarkModeEnabled()` _OS X_
+
+This method returns `true` if Dark Mode is enabled, and `false` otherwise.
+
 ### `app.commandLine.appendSwitch(switch[, value])`
 
 Append a switch (with optional `value`) to Chromium's command line.