CloseNotification
CloseNotification is a type of inter-component message used in software systems to signal the intent to end or release a resource, window, or process. It is part of event-driven and messaging architectures that aim to decouple the initiator of a close action from the component that performs the actual shutdown or cleanup. CloseNotification typically flows from a producer or controller to a consumer or managed object, requesting that it begin the closing sequence.
A CloseNotification commonly carries metadata such as the origin of the message (source), the intended recipient
Processing a CloseNotification usually involves initiating cleanup, saving state if appropriate, and determining whether the close
Variations exist across platforms; some systems prefer a CloseEvent rather than a CloseNotification. Related concepts include