ObjectObserver

public final class ObjectObserver:NSObject, Observer

Implementation of Observer for observing a keypath setter of an object. Observation begins on init and ends on deinit unless called otherwise.

For efficiency the class is marked as final. If necessary, convenience initialisers can be created using extensions.

  • The keypath being observed on object.

    Declaration

    Swift

    public let keypath:String

  • The object to to observe keypath on.

    Declaration

    Swift

    public let object:NSObject

  • The options applied to the observation.

    Declaration

    Swift

    public let options:NSKeyValueObservingOptions

  • The context to observe in.

    Declaration

    Swift

    public let context:UnsafeMutablePointer<Void>

  • Flag for whether this Observer is currently registered as an observer on center.

    Declaration

    Swift

    public private(set) var observing:Bool = false

  • Default initialiser.

    Declaration

    Swift

    public init(keypath:String, object:NSObject, options: NSKeyValueObservingOptions = [.Old, .New], context:UnsafeMutablePointer<Void> = nil, completion:(keypath:String, object:NSObject, change:[String:AnyObject]?) -> ())

    Parameters

    keypath

    The keypath to observe.
    object

    The object to observe keypath on.
    options

    The KVO options. The default value is .Old and .New.
    context

    The KVO context to observe in. The default value is nil.
    completion

    The block to perform when keypath is set on object.

  • Overrides default to call completion if object and keypath match the parameters.

    Declaration

    Swift

    public override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>)

  • Registers self to observe center for name restricted to object.

    Declaration

    Swift

    public func beginObserving()

  • Unregisters self to stop observing center for name restricted to object.

    Declaration

    Swift

    public func endObserving()