US Patent 10091287 Determining presence in an application accessing shared and synchronized content

A device collects presence information and other interaction information from an application viewing a content item synchronized with a content management system. The interaction information indicates interactions of a device with respect to a content item, and includes presence information obtained from a native application such as whether the content item is being viewed by the user on a user interface element or the user interface element is modifying the content item. A presence management module receives presence events indicating possible change of presence with respect to a user interface window associated with a process and a synchronized content item. Such presence events include a change in focus of a user interface element indicating that a user is viewing the content item, and changes to a content item indicating a user is editing the content item.