We currently have a system wide event bus developed for the new UI and up til now it has only been used for UI related events.

Going forward this should be part of magnolia-core and be provided as a facility for any code that would benefit from sending or listening to a system wide event.

The changes I have in mind is moving the following classes from ui-framework to magnolia-core and the package info.magnolia.event:

• info.magnolia.ui.framework.event.Event
• info.magnolia.ui.framework.event.EventBus
• info.magnolia.ui.framework.event.EventHandler
• info.magnolia.ui.framework.event.EventHandlerCollection
• info.magnolia.ui.framework.event.HandlerRegistration
• info.magnolia.ui.framework.event.ResettableEventBus
• info.magnolia.ui.framework.event.SimpleEventBus
• info.magnolia.ui.framework.event.SystemEventBusConfigurer

Configuration of the system wide event bus would also move from the ui-admincentral module to the core module.

Q: The system event bus is configured in the main component provider. Which isn't necessarily a problem or even particularly confusing. It can become a problem though should the need for an EventBus specific to the system component provider be necessary later on.