Architecting Bloc and StreamControllers to handle events

I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.

Currently, I have different sinks I'm adding to depending on what the user is doing e.g. clicking a radio button, clicking a button to increase a counter, all in the same view. I'm searching how to handle these events in a common sink as it seems like a lot of plumbing to have a sink for each part. When I'm changing state I use different streams it's, but it's for the event handling part I'm looking around for a solution.

Any guidance to make the sink handling cleaner or is this the way to do it?

example of the current code I would like to streamline

// distance

  StreamController<bool> _cmdDistanceController = StreamController<bool>();

  StreamSink get distanceCommands => _cmdDistanceController.sink;



  StreamController<String> _syncDistanceController =

      StreamController<String>.broadcast();

  Stream<String> get syncDistances => _syncDistanceController.stream;



  // speed

  StreamController<bool> _cmdSpeedController = StreamController<bool>();

  StreamSink get speedCommands => _cmdSpeedController.sink;



  StreamController<String> _syncSpeedController =

      StreamController<String>.broadcast();

  Stream<String> get syncSpeed => _syncSpeedController.stream;

edited Nov 21 '18 at 14:53

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

"or is this the way to do it" - post some code of "this"

– pskink
Nov 21 '18 at 14:51

I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew

– Rasmus Christensen
Nov 21 '18 at 14:55

hmmm, i dont quite understand what you mean by "merge" but maybe its StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."

– pskink
Nov 21 '18 at 14:59

Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool

– Rasmus Christensen
Nov 21 '18 at 15:02

a stream ID (indicating the type of command) or something?

– pskink
Nov 21 '18 at 15:04

|
show 2 more comments

I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.

Any guidance to make the sink handling cleaner or is this the way to do it?

example of the current code I would like to streamline

// distance

  StreamController<bool> _cmdDistanceController = StreamController<bool>();

  StreamSink get distanceCommands => _cmdDistanceController.sink;



  StreamController<String> _syncDistanceController =

      StreamController<String>.broadcast();

  Stream<String> get syncDistances => _syncDistanceController.stream;



  // speed

  StreamController<bool> _cmdSpeedController = StreamController<bool>();

  StreamSink get speedCommands => _cmdSpeedController.sink;



  StreamController<String> _syncSpeedController =

      StreamController<String>.broadcast();

  Stream<String> get syncSpeed => _syncSpeedController.stream;

edited Nov 21 '18 at 14:53

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

"or is this the way to do it" - post some code of "this"

– pskink
Nov 21 '18 at 14:51

I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew

– Rasmus Christensen
Nov 21 '18 at 14:55

hmmm, i dont quite understand what you mean by "merge" but maybe its StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."

– pskink
Nov 21 '18 at 14:59

Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool

– Rasmus Christensen
Nov 21 '18 at 15:02

a stream ID (indicating the type of command) or something?

– pskink
Nov 21 '18 at 15:04

|
show 2 more comments

I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.

Any guidance to make the sink handling cleaner or is this the way to do it?

example of the current code I would like to streamline

// distance

  StreamController<bool> _cmdDistanceController = StreamController<bool>();

  StreamSink get distanceCommands => _cmdDistanceController.sink;



  StreamController<String> _syncDistanceController =

      StreamController<String>.broadcast();

  Stream<String> get syncDistances => _syncDistanceController.stream;



  // speed

  StreamController<bool> _cmdSpeedController = StreamController<bool>();

  StreamSink get speedCommands => _cmdSpeedController.sink;



  StreamController<String> _syncSpeedController =

      StreamController<String>.broadcast();

  Stream<String> get syncSpeed => _syncSpeedController.stream;

edited Nov 21 '18 at 14:53

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.

Any guidance to make the sink handling cleaner or is this the way to do it?

example of the current code I would like to streamline

// distance

  StreamController<bool> _cmdDistanceController = StreamController<bool>();

  StreamSink get distanceCommands => _cmdDistanceController.sink;



  StreamController<String> _syncDistanceController =

      StreamController<String>.broadcast();

  Stream<String> get syncDistances => _syncDistanceController.stream;



  // speed

  StreamController<bool> _cmdSpeedController = StreamController<bool>();

  StreamSink get speedCommands => _cmdSpeedController.sink;



  StreamController<String> _syncSpeedController =

      StreamController<String>.broadcast();

  Stream<String> get syncSpeed => _syncSpeedController.stream;

flutter

edited Nov 21 '18 at 14:53

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

edited Nov 21 '18 at 14:53

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

edited Nov 21 '18 at 14:53

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

asked Nov 21 '18 at 14:34

Rasmus Christensen

5,12773261

"or is this the way to do it" - post some code of "this"

– pskink
Nov 21 '18 at 14:51

I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew

– Rasmus Christensen
Nov 21 '18 at 14:55

hmmm, i dont quite understand what you mean by "merge" but maybe its StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."

– pskink
Nov 21 '18 at 14:59

Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool

– Rasmus Christensen
Nov 21 '18 at 15:02

a stream ID (indicating the type of command) or something?

– pskink
Nov 21 '18 at 15:04

|
show 2 more comments

"or is this the way to do it" - post some code of "this"

– pskink
Nov 21 '18 at 14:51

I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew

– Rasmus Christensen
Nov 21 '18 at 14:55

hmmm, i dont quite understand what you mean by "merge" but maybe its StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."

– pskink
Nov 21 '18 at 14:59

Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool

– Rasmus Christensen
Nov 21 '18 at 15:02

a stream ID (indicating the type of command) or something?

– pskink
Nov 21 '18 at 15:04

"or is this the way to do it" - post some code of "this"

– pskink
Nov 21 '18 at 14:51

I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew

– Rasmus Christensen
Nov 21 '18 at 14:55

hmmm, i dont quite understand what you mean by "merge" but maybe its StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."

– pskink
Nov 21 '18 at 14:59

Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool

– Rasmus Christensen
Nov 21 '18 at 15:02

a stream ID (indicating the type of command) or something?

– pskink
Nov 21 '18 at 15:04

|
show 2 more comments

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