IGListAdapterUpdater


@interface IGListAdapterUpdater : NSObject <IGListUpdatingDelegate>

An IGListAdapterUpdater is a concrete type that conforms to IGListUpdatingDelegate. It is an out-of-box updater for IGListAdapter objects to use.

Note

This updater performs re-entrant, coalesced updating for a list. It also uses a least-minimal diff for calculating UI updates when IGListAdapter calls -performUpdateWithCollectionView:fromObjects:toObjects:completion:.

  • The delegate that receives events with data on the performance of a transition.

    Declaration

    Objective-C

    @property (readwrite, nonatomic)
    id<IGListAdapterUpdaterDelegate> _Nullable delegate;

    Swift

    weak var delegate: ListAdapterUpdaterDelegate? { get set }

  • A flag indicating if a move should be treated as a delete, then insert operation.

    Declaration

    Objective-C

    @property (assign, readwrite, nonatomic) BOOL movesAsDeletesInserts;

    Swift

    var movesAsDeletesInserts: Bool { get set }

  • A flag indicating whether this updater should skip diffing and simply call reloadData for updates when the collection view is not in a window. The default value is YES.

    Note

    This will result in better performance, but will not generate the same delegate callbacks. If using a custom layout, it will not receive prepareForCollectionViewUpdates:.

    Warning

    On iOS < 8.3, this behavior is unsupported and will always be treated as NO.

    Declaration

    Objective-C

    @property (assign, readwrite, nonatomic) BOOL allowsBackgroundReloading;

    Swift

    var allowsBackgroundReloading: Bool { get set }

  • A bitmask of experiments to conduct on the updater.

    Declaration

    Objective-C

    @property (assign, readwrite, nonatomic) IGListExperiment experiments;

    Swift

    var experiments: IGListExperiment { get set }