message_bus 0.0.4

  • Example
  • Installing
  • Versions
  • 0

message_bus #

A simple message_bus library for Dart

Usage #

A simple usage example:

import 'package:message_bus/message_bus.dart';

MessageBus mBus = new MessageBus();

class Subscriber() extends EventHandler<String> {
    handleEvent(String event) {
        print('I got an event: $event');

main() {
    Subscriber subscriber = new Subscriber();
    mBus.subscribe(String, subscriber);
    mBus.publish('Subscriber will get this');

Features and bugs #

Please file feature requests and bugs at the issue tracker.

Changelog #

0.0.1 #

  • Initial version

0.0.3 #

  • Add enrich functionality


// Copyright (c) 2016, Robert McDermot. All rights reserved. Use of this source code

// is governed by a BSD-style license that can be found in the LICENSE file.

import 'package:message_bus/message_bus.dart';
import 'dart:async';

MessageBus mBus;

main() async {
	mBus = new MessageBus();
	ClientA aClient = new ClientA();
	ClientB bClient = new ClientB();
	await bClient.publish();
	mBus.unsubscribe(String, aClient);
	bClient = new ClientB();
	await bClient.publish();

class ClientA implements EventHandler<String> {
	ClientA() {
		mBus.subscribe(String, this);

	Future handleEvent(String event) async {
		print('I got me a string event: $event');

class ClientB {
	Future publish() async {
		await mBus.publish('ClientB being created - message 1');
		await mBus.publish('ClientB being created - message 2');
		await mBus.publish(1);

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  message_bus: ^0.0.4

2. Install it

You can install packages from the command line:

with pub:

$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:message_bus/message_bus.dart';
Version Uploaded Documentation Archive
0.0.4 Jun 18, 2016 Go to the documentation of message_bus 0.0.4 Download message_bus 0.0.4 archive
0.0.3 Jun 18, 2016 Go to the documentation of message_bus 0.0.3 Download message_bus 0.0.3 archive
0.0.2 Jun 18, 2016 Go to the documentation of message_bus 0.0.2 Download message_bus 0.0.2 archive
0.0.1 Jun 18, 2016 Go to the documentation of message_bus 0.0.1 Download message_bus 0.0.1 archive
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The package version is not analyzed, because it does not support Dart 2. Until this is resolved, the package will receive a health and maintenance score of 0.

Analysis issues and suggestions

Support Dart 2 in pubspec.yaml.

The SDK constraint in pubspec.yaml doesn't allow the Dart 2.0.0 release. For information about upgrading it to be Dart 2 compatible, please see

Maintenance issues and suggestions

Make sure dartdoc successfully runs on your package's source files. (-10 points)

Dependencies were not resolved.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.0.0 <2.0.0