/// <summary>
/// Initializes a new instance of the <see cref="FlutnetBridge"/> class
/// specifying how platform code and Flutter code communicate.
/// </summary>
public FlutnetBridge(FlutterEngine engine, FlutnetBridgeMode mode)
{
// Create the named channel for communicating with Flutter module using asynchronous method calls
// NOTE: This channel is used to RECEIVE messages/requests FROM Flutter
_methodChannelIncoming = FlutterMethodChannel.Create("flutnetbridge.incoming", engine.BinaryMessenger);
_methodChannelIncoming.SetMethodCallHandler(HandleMethodCall);
// Create a second named channel for diagnostic use only.
// This channel is used, for example, to test if Flutter module is running
// embedded into a native Xamarin app or as a standalone app
_methodChannelTest = FlutterMethodChannel.Create("flutnetbridge.support", engine.BinaryMessenger);
_methodChannelTest.SetMethodCallHandler(HandleMethodCallTest);
// Create the named channel for communicating with Flutter module using event streams
// NOTE: This channel is used to SEND messages/notifications TO Flutter
// An event channel is a specialized platform channel intended for the use case of exposing platform events to Flutter as a Dart stream.
// The Flutter SDK currently has no support for the symmetrical case of exposing Dart streams to platform code, though that could be built, if the need arises.
// see: https://medium.com/flutter/flutter-platform-channels-ce7f540a104e
_streamHandler = new StreamHandler(this);
_eventChannel = FlutterEventChannel.Create("flutnetbridge.outgoing", engine.BinaryMessenger);
_eventChannel.SetStreamHandler(_streamHandler);
Mode = mode;
FlutnetRuntime.OnPlatformEvent += FlutnetRuntimeOnPlatformEvent;
if (Mode == FlutnetBridgeMode.WebSocket)
{
_socketService = new FlutnetWebSocketService();
}
}
/// <summary>
/// Releases all resources used by this object.
/// </summary>
public void Dispose()
{
if (_disposed)
{
return;
}
FlutnetRuntime.OnPlatformEvent -= FlutnetRuntimeOnPlatformEvent;
_methodChannelIncoming.Dispose();
_methodChannelTest.Dispose();
_eventChannel.Dispose();
_streamHandler.Dispose();
if (Mode == FlutnetBridgeMode.WebSocket)
{
_socketService?.Dispose();
_socketService = null;
}
_disposed = true;
}
