HUBContentOperationWithPaginatedContent

@protocol HUBContentOperationWithPaginatedContent <HUBContentOperation>

Extended content operation protocol that adds the ability to append paginated content to a view

Use this protocol in case you want to handle large datasets in your feature, which are not practical to load up front. Content operations conforming to this protocol will be called and asked to append content to an existing view model builder in either of 3 scenarios:

  • If the loadNextPageForCurrentViewModel method was called on a HUBViewModelLoader.
  • If the user is about to reach the bottom of the view’s content when scrolling.

  • Append content for a certain page index to an existing view model builder

    Declaration

    Objective-C

    - (void)appendContentForPageIndex:(NSUInteger)pageIndex
               toViewModelBuilder:
                   (nonnull id<HUBViewModelBuilder>)viewModelBuilder
                          viewURI:(nonnull NSURL *)viewURI
                      featureInfo:(nonnull id<HUBFeatureInfo>)featureInfo
                connectivityState:(HUBConnectivityState)connectivityState
                    previousError:(nullable NSError *)previousError;

    Parameters

    pageIndex

    The index of the page to add content for. Since the main content set is considered index number 0, this will always be at least 1 or greater. Incremented on each paginated content loading chain.
    viewModelBuilder

    The builder to use to append content to the view. If this content operation is first in the appended content loading chain, this builder will be a snapshot of the last rendered view state. If it’s subsequent in the chain, it will instead be a snapshot of the previous operation’s finished state.
    viewURI

    The URI of the view that content should be appended for
    featureInfo

    Info about the feature that the operation is being performed for
    connectivityState

    The current connectivity state of the application (as it was when the content loading chain that this operation is part of was started).
    previousError

    Any previous error that was encountered during the content loading chain that this operation is a part of.