IGListBindingSectionControllerDataSource

@protocol IGListBindingSectionControllerDataSource <NSObject>

A protocol that returns data to power cells in an IGListBindingSectionController.

  • Create an array of view models given a top-level object.

    Declaration

    Objective-C

    - (nonnull NSArray<id<IGListDiffable>> *)
          sectionController:
              (nonnull IGListBindingSectionController *)sectionController
        viewModelsForObject:(nonnull id)object;

    Parameters

    sectionController

    The section controller requesting view models.

    object

    The top-level object that powers the section controller.

    Return Value

    A new array of view models.

  • Return a dequeued cell for a given view model.

    Note

    The section controller will call -bindViewModel: with the provided view model after the cell is dequeued. You should handle cell configuration using this method. However, you can do additional configuration at this stage as well.

    Declaration

    Objective-C

    - (nonnull UICollectionViewCell<IGListBindable> *)
        sectionController:
            (nonnull IGListBindingSectionController *)sectionController
         cellForViewModel:(nonnull id)viewModel
                  atIndex:(NSInteger)index;

    Parameters

    sectionController

    The section controller requesting a cell.

    viewModel

    The view model for the cell.

    index

    The index of the view model.

    Return Value

    A dequeued cell.

  • Return a cell size for a given view model.

    Declaration

    Objective-C

    - (CGSize)sectionController:
                  (nonnull IGListBindingSectionController *)sectionController
               sizeForViewModel:(nonnull id)viewModel
                        atIndex:(NSInteger)index;

    Swift

    func sectionController(_ sectionController: IGListBindingSectionController, sizeForViewModel viewModel: Any, at index: Int) -> CGSize

    Parameters

    sectionController

    The section controller requesting a size.

    viewModel

    The view model for the cell.

    index

    The index of the view model.

    Return Value

    A size for the view model.