IGListDisplayDelegate

@protocol IGListDisplayDelegate <NSObject>

Implement this protocol to receive display events for a section controller when it is on screen.

  • Tells the delegate that the specified section controller is about to be displayed.

    Declaration

    Objective-C

    - (void)listAdapter:(nonnull IGListAdapter *)listAdapter
    willDisplaySectionController:
        (nonnull IGListSectionController *)sectionController;

    Swift

    func listAdapter(_ listAdapter: IGListAdapter, willDisplay sectionController: IGListSectionController)

    Parameters

    listAdapter

    The list adapter for the section controller.
    sectionController

    The section controller about to be displayed.

  • Tells the delegate that the specified section controller is no longer being displayed.

    Declaration

    Objective-C

    - (void)listAdapter:(nonnull IGListAdapter *)listAdapter
    didEndDisplayingSectionController:
        (nonnull IGListSectionController *)sectionController;

    Swift

    func listAdapter(_ listAdapter: IGListAdapter, didEndDisplaying sectionController: IGListSectionController)

    Parameters

    listAdapter

    The list adapter for the section controller.
    sectionController

    The section controller that is no longer displayed.

  • Tells the delegate that a cell in the specified list is about to be displayed.

    Declaration

    Objective-C

    - (void)listAdapter:(nonnull IGListAdapter *)listAdapter
    willDisplaySectionController:
        (nonnull IGListSectionController *)sectionController
                            cell:(nonnull UICollectionViewCell *)cell
                         atIndex:(NSInteger)index;

    Swift

    func listAdapter(_ listAdapter: IGListAdapter, willDisplay sectionController: IGListSectionController, cell: UICollectionViewCell, at index: Int)

    Parameters

    listAdapter

    The list adapter in which the cell will display.
    sectionController

    The section controller that is displaying the cell.
    cell

    The cell about to be displayed.
    index

    The index of the cell in the section.

  • Tells the delegate that a cell in the specified list is no longer being displayed.

    Declaration

    Objective-C

    - (void)listAdapter:(nonnull IGListAdapter *)listAdapter
    didEndDisplayingSectionController:
        (nonnull IGListSectionController *)sectionController
                                 cell:(nonnull UICollectionViewCell *)cell
                              atIndex:(NSInteger)index;

    Swift

    func listAdapter(_ listAdapter: IGListAdapter, didEndDisplaying sectionController: IGListSectionController, cell: UICollectionViewCell, at index: Int)

    Parameters

    listAdapter

    The list adapter in which the cell was displayed.
    sectionController

    The section controller that is no longer displaying the cell.
    cell

    The cell that is no longer displayed.
    index

    The index of the cell in the section.