CSListObserver
@available(OSX 10.12, *)
@objc
public protocol CSListObserver : AnyObject
Implement the CSListObserver
protocol to observe changes to a list of NSManagedObject
s. CSListObserver
s may register themselves to a CSListMonitor
‘s -addListObserver:
method:
CSListMonitor *monitor = [CSCoreStore
monitorListFrom:[CSFrom entityClass:[MyPersonEntity class]]
fetchClauses:@[[CSOrderBy sortDescriptor:[CSSortKey withKeyPath:@"lastName" ascending:YES]]]];
[monitor addListObserver:self];
See also
ListObserver
-
Handles processing just before a change to the observed list occurs
Declaration
Swift
@objc optional func listMonitorWillChange(_ monitor: CSListMonitor)
Parameters
monitor
the
CSListMonitor
monitoring the list being observed -
Handles processing right after a change to the observed list occurs
Declaration
Swift
@objc optional func listMonitorDidChange(_ monitor: CSListMonitor)
Parameters
monitor
the
CSListMonitor
monitoring the object being observed -
This method is broadcast from within the
CSListMonitor
‘s-refetchWithFetchClauses:
method to let observers prepare for the internalNSFetchedResultsController
’s pending change to its predicate, sort descriptors, etc. Note that the actual refetch will happen after theNSFetchedResultsController
’s last-controllerDidChangeContent:
notification completes.Declaration
Swift
@objc optional func listMonitorWillRefetch(_ monitor: CSListMonitor)
Parameters
monitor
the
CSListMonitor
monitoring the object being observed -
After the
CSListMonitor
‘s-refetchWithFetchClauses:
method is called, this method is broadcast after theNSFetchedResultsController
’s last-controllerDidChangeContent:
notification completes.Declaration
Swift
@objc optional func listMonitorDidRefetch(_ monitor: CSListMonitor)
Parameters
monitor
the
CSListMonitor
monitoring the object being observed