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Controller Key-Value Observing Compliance

The Cocoa bindings controller classes only provide key-value observing notifications for selected properties. This article enumerates the key-value-observing compliant properties for each class.

Contents:

NSUserDefaultsController
NSObjectController
NSArrayController
NSTreeController

NSUserDefaultsController

NSUserDefaultsController is key-value-observing compliant for the following properties:

• appliesImmediately

• defaults

• hasUnappliedChanges

• initialValues

• values

NSObjectController

NSObjectController is key-value-observing compliant for the following properties:

• canAdd

• canRemove

• content

• isEditable

• objectClass

• selectedObjects

• selection

NSArrayController

NSArrayController is key-value-observing compliant for the following properties:

• alwaysUsesMultipleValuesMarker

• arrangedObjects

• avoidsEmptySelection

• canAdd

• canInsert

• canRemove

• canSelectNext

• canSelectPrevious

• clearsFilterPredicateOnInsertion

• content

• filterPredicate

• isEditable

• preservesSelection

• selectedObjects

• selection

• selectionIndex

• selectionIndexes

• selectsInsertedObjects

• sortDescriptors

NSTreeController

NSTreeController is key-value-observing compliant for the following properties:

• alwaysUsesMultipleValuesMarker

• arrangedObjects

• avoidsEmptySelection

• canAdd

• canAddChild

• canInsert

• canInsertChild

• canRemove

• canSelectNext

• canSelectPrevious

• content

• isEditable

• preservesSelection

• selectedObjects

• selection

• selectionIndexPath

• selectionIndexPaths

• selectsInsertedObjects

• sortDescriptors

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