Initial commit

plugin/port_update/lib/src/port_update.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/services.dart';
+
+enum UpdateAction {
+  unknown,
+  batteryCharging,
+  batteryDischarging,
+  batteryFull,
+  headphoneConnected,
+  headphoneDisconnected
+}
+
+class PortUpdate {
+  static const channel = "port/stream";
+
+  final _channel = const EventChannel(channel);
+
+  Stream<UpdateAction?> get stream => _channel.receiveBroadcastStream().map((event) => UpdateAction.values.elementAt(event));
+}