A cluster of data source classes for building Cocoa apps. This library includes modified versions of classes from Apple's 2014 WWDC code sample "Advanced User Interfaces Using Collection View".

An abstract class that vends an ordered collection (a two-level index path structure) of items, and notifies a delegate of changes in the data. Data sources conform to both UITableViewDataSource and UICollectionViewDataSource.

A data source that vends a mutable array. You can either set the items property all at once or call mutableArrayValueForKey("items") to retrieve an array that will act as a proxy to the vended collection. Changes made to this array are tracked and reported normally.

A data source the acts as a proxy for an array of child data sources. Each child data source may vend 0 or more contiguous sections. Note the dataSourceForSection: method.

A data source that vends the objects and changes from a PHFetchResult.

A data source that vends the objects and changes from an NSFetchedResultsController.

A delightful state machine where each state is an NSString and it dynamically calls delegate methods based on state names. didEnterLoading:, didExitBourgeoisie:, etc

A state machine subclass for managing content loading. Haven't touched this one yet but it seems nice.