Apple Inc.
MULTIPLE INDEPENDENT LIFECYCLE STATES

Abstract:

Methods and systems are disclosed that create user interface (UI) instances for corresponding input/output resources, such as display resources, and each of these UI instances have separate lifecycle states or information maintained by the respective UI instances. System processes for the display resources (e.g. different displays or different windows for the same display devices) can control access to their respective display resource and can report changes in the lifecycle states to their respective UI interface.