Events System

• EventsSystem
  • A singleton based thread-safe event system, which components can use to subscribe and post to other components.
  • install: pip install events-system
  • import: import EventsSystem
  • import EventListener: from events_system.event_listener import EventListener
  • subscribe: EventsSystem.subscribe("event_type", function)
  • post: EventsSystem.post(event_type)
  • example use: Create an abstract class as listener to a concrete component by subclassing EventListener and defining an abstract function along the lines of setup_ConcreteComponent_listener. In its abstract function, this component listener must call super().setup_event_handlers() to which the subscription dictionary {"event_type":function} is passed. Whatever other component needs to be informed about these events, can now implement that component listener and pass their subscription dictionary to the function.