Support for universal links

example/main.go

@@ -13,8 +13,9 @@ func main() {
 		now := time.Now()
 		fmt.Println("Exit at", now.String())
 	}
+	input := make(chan string, 1)
 
-	systray.Run(onReady, onExit, func(b bool) {})
+	systray.Run(onReady, onExit, func(b bool) {}, input)
 }
 
 func addQuitItem() {

systray.go

@@ -21,6 +21,8 @@ var (
 
 	currentID = uint32(0)
 	quitOnce  sync.Once
+
+	urlInput chan string
 )
 
 // This helper function allows us to call systrayExit only once,
@@ -81,14 +83,15 @@ func newMenuItem(title string, tooltip string, parent *MenuItem) *MenuItem {
 
 // Run initializes GUI and starts the event loop, then invokes the onReady
 // callback. It blocks until systray.Quit() is called.
-func Run(onReady, onExit func(), onAppearanceChanged func(bool)) {
+func Run(onReady, onExit func(), onAppearanceChanged func(bool), input chan string) {
+	urlInput = input
 	setInternalLoop(true)
 	Register(onReady, onExit, onAppearanceChanged)
 
 	nativeLoop()
 }
 
-// RunWithExternalLoop allows the systemtray module to operate with other tookits.
+// RunWithExternalLoop allows the systemtray module to operate with other toolkits.
 // The returned start and end functions should be called by the toolkit when the application has started and will end.
 func RunWithExternalLoop(onReady, onExit func(), onAppearanceChanged func(bool)) (start, end func()) {
 	Register(onReady, onExit, onAppearanceChanged)

systray.h

@@ -5,6 +5,7 @@ extern void systray_on_exit();
 extern void systray_menu_opened();
 extern void systray_menu_item_selected(int menu_id);
 extern void systray_appearance_changed(bool dark);
+extern void handleURL(char*);
 void registerSystray(void);
 void nativeEnd(void);
 int nativeLoop(void);

systray_darwin.go

@@ -161,3 +161,8 @@ func systray_menu_opened() {
 func systray_appearance_changed(dark C.bool) {
 	systrayAppearanceChanged(bool(dark))
 }
+
+//export handleURL
+func handleURL(u *C.char) {
+	urlInput <- C.GoString(u)
+}

systray_darwin.m

@@ -65,6 +65,17 @@ @implementation AppDelegate
 
 @synthesize window = _window;
 
+- (BOOL)application:(NSApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray<id<NSUserActivityRestoring>> *restorableObjects))restorationHandler {
+  if (![userActivity.activityType isEqualToString:NSUserActivityTypeBrowsingWeb]) {
+    return NO;
+  }
+
+  NSString *urlStr = [userActivity.webpageURL absoluteString];
+  handleURL((char *)[urlStr UTF8String]);
+
+  return YES;
+}
+
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification
 {
   self->statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength];