ef7184a1aa
Update DirectoryFragment to render List<Document>, making it more general purpose. Feed it documents either from a backend Cursor or after resolving fields from a recents Cursor. Start in recents when no persisted stack available. Synthesize a root for recents. Local directory filtering and sorting using predicates and comparators, all performed on background thread. Introduce UriDerivativeLoader which handles ContentObserver updates while producing a derivative work of a Cursor. Split data model classes into separate files. Change-Id: Idb88b4ee22c58c8e508328e678877f7e4c978533