refactor: Remove static map for BroadcastCenter instances and enhance OnBroadcastReceived logging

Author: lijy91

src/broadcast_center.cpp

@@ -20,6 +20,8 @@ BroadcastEventHandler::BroadcastEventHandler(
 void BroadcastEventHandler::OnBroadcastReceived(const std::string& topic,
                                                 const std::string& message) {
   if (onBroadcastReceivedCallback_) {
+    std::cout << "BroadcastEventHandler::OnBroadcastReceived() " << topic << " "
+              << message << std::endl;
     onBroadcastReceivedCallback_(topic, message);
   }
 }

src/broadcast_center_macos.mm

@@ -10,9 +10,6 @@
 
 namespace nativeapi {
 
-// Static map to store BroadcastCenter instances
-static std::map<BroadcastCenter*, std::string> g_broadcast_centers;
-
 void BroadcastCenter::SendBroadcast(const std::string& topic, const std::string& message) {
   NSDistributedNotificationCenter* center = [NSDistributedNotificationCenter defaultCenter];
   [center postNotificationName:[NSString stringWithUTF8String:topic.c_str()]
@@ -27,6 +24,7 @@
                       object:nil
                        queue:[NSOperationQueue mainQueue]
                   usingBlock:^(NSNotification* notification) {
+                    std::string topic = [notification.name UTF8String];
                     std::string message = [notification.userInfo[@"message"] UTF8String];
                     receiver->OnBroadcastReceived(topic, message);
                   }];

src/window_manager_macos.mm

@@ -49,7 +49,11 @@
 
 std::shared_ptr<Window> WindowManager::GetCurrent() {
   NSApplication* app = [NSApplication sharedApplication];
+  NSArray* ns_windows = [[NSApplication sharedApplication] windows];
   NSWindow* ns_window = [app mainWindow];
+  if (ns_window == nil) {
+    ns_window = [ns_windows objectAtIndex:0];
+  }
   if (ns_window != nil) {
     return Get([ns_window windowNumber]);
   }