https://github.com/plugfox/eb_archive

Event Manager implementing an event-driven publish–subscribe pattern with singleton Event Bus.
https://github.com/plugfox/eb_archive

Last synced: 4 months ago
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Event Manager implementing an event-driven publish–subscribe pattern with singleton Event Bus.

• Host: GitHub
• URL: https://github.com/plugfox/eb_archive
• Owner: PlugFox
• License: mit
• Created: 2020-04-28T02:40:29.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2020-08-16T00:57:00.000Z (over 5 years ago)
• Last Synced: 2025-02-19T02:49:13.798Z (about 1 year ago)
• Language: Dart
• Size: 109 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# EB  

  

  

### About  

Event Manager implementing an event-driven [publish–subscribe pattern](https://en.wikipedia.org/wiki/Publish-subscribe_pattern) with singleton Event Bus.  

Inspired by message queue paradigm, message brokers.  

Designed for easy application scaling.  

  

  

---

  

### Example:  

  

```dart

import 'package:eb/eb.dart';

class A with Subscriber {

  A() {

    messages.forEach((Message e) => print('A gotcha $e')); 

  }

}

  

class B with Subscriber {}

class C with Publisher, Subscriber {}

class D with Publisher {}

void main() {

  // Supervisor for whole app and logs

  MessageBusSupervisor.addMessageCallbacks([

    (Message e) => print('Supervisor gotcha $e #1'),

    (Message e) => print('Supervisor gotcha $e #2'),

  ]);

  // Domains/Subsystems/Widgets

  A();

  B()..onMessage((Message e) => print('B gotcha $e'));

  C()..onMessage((Message e) => print('C gotcha $e'), topic: 'd')..emit(const Message('c'));

  D()..emit(const Message('d'));

  // Permanent bus destruction

  MessageBusSupervisor.kill();

}

```