protected override IPageLoadingBehaviorCollectionBuilder <TViewModel, ISlidingWindow <TViewModel> > CreateInitialBuilder(
int pageSize,
IScheduler notificationScheduler,
IScheduler backgroundScheduler)
{
return(SlidingWindowBuilder.Build <TViewModel>(
_slidingWindowOptionsViewModel.WindowSize,
_slidingWindowOptionsViewModel.WindowOffset,
pageSize,
notificationScheduler,
backgroundScheduler));
}
internal static ISlidingWindow <T> CreateCollectionWithCustomPageFetchingLogicAndCustomLeastRecentlyUsed <T>(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior,
int count,
int pageSize,
int initialWindowSize,
int initialWindowOffset,
Func <int, int, T[]> pageFetchingLogic,
T placeholder,
int pageLimit,
int removalCount,
IScheduler scheduler)
{
var pageLoadingBehaviorCollectionBuilder = SlidingWindowBuilder.Build <T>(
initialWindowSize,
initialWindowOffset,
pageSize,
new EventLoopScheduler(),
scheduler);
var pageHoldingBehaviorCollectionBuilder =
StandardPageHoldingBehaviorCollectionBuilder(
pageLoadingBehaviorCollectionBuilder,
pageLoadingBehavior,
(_, __) => placeholder);
var fetchersKindCollectionBuilder =
StandardFetcherKindCollectionBuilder(
pageHoldingBehaviorCollectionBuilder,
pageRemovalBehavior,
pageLimit,
removalCount);
var indexAccessBehaviorCollectionBuilder =
StandardIndexAccessBehaviorCollectionBuilder(
fetchersKindCollectionBuilder,
fetchersKind,
pageFetchingLogic,
() => count);
var dataVirtualizingCollection =
StandardDataVirtualizingCollection(
indexAccessBehaviorCollectionBuilder,
indexAccessBehavior,
() => placeholder);
return(dataVirtualizingCollection);
}
internal static ISlidingWindow <int> CreateCollectionWithIncrementalIntegerWhereFetchersIgnorePageSize(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior,
int count,
int pageSize,
int initialWindowSize,
int initialWindowOffset,
IScheduler scheduler)
{
var pageLoadingBehaviorCollectionBuilder = SlidingWindowBuilder.Build <int>(
initialWindowSize,
initialWindowOffset,
pageSize,
new EventLoopScheduler(),
scheduler);
var pageHoldingBehaviorCollectionBuilder =
StandardPageHoldingBehaviorCollectionBuilder(
pageLoadingBehaviorCollectionBuilder,
pageLoadingBehavior,
(_, __) => - 1);
var fetchersKindCollectionBuilder =
StandardFetcherKindCollectionBuilder(
pageHoldingBehaviorCollectionBuilder,
pageRemovalBehavior,
10,
1);
var indexAccessBehaviorCollectionBuilder =
StandardIndexAccessBehaviorCollectionBuilder(
fetchersKindCollectionBuilder,
fetchersKind,
(offset, pSize) =>
Enumerable
.Range(offset, pageSize) // <--- This is different! pageSize instead of pSize!
.ToArray(),
() => count);
var dataVirtualizingCollection =
StandardDataVirtualizingCollection(
indexAccessBehaviorCollectionBuilder,
indexAccessBehavior,
() => - 1);
return(dataVirtualizingCollection);
}
internal static ISlidingWindow <int> CreateCollectionWithCustomCountFetcher(
PageLoadingBehavior pageLoadingBehavior,
PageRemovalBehavior pageRemovalBehavior,
FetchersKind fetchersKind,
IndexAccessBehavior indexAccessBehavior,
Func <int> countFetcher,
int pageSize,
int initialWindowSize,
int initialWindowOffset,
IScheduler scheduler)
{
var pageLoadingBehaviorCollectionBuilder = SlidingWindowBuilder.Build <int>(
initialWindowSize,
initialWindowOffset, pageSize,
new EventLoopScheduler(),
scheduler);
var pageHoldingBehaviorCollectionBuilder =
StandardPageHoldingBehaviorCollectionBuilder(
pageLoadingBehaviorCollectionBuilder,
pageLoadingBehavior,
(_, __) => - 1);
var fetchersKindCollectionBuilder =
StandardFetcherKindCollectionBuilder(
pageHoldingBehaviorCollectionBuilder,
pageRemovalBehavior,
10,
1);
var indexAccessBehaviorCollectionBuilder =
StandardIndexAccessBehaviorCollectionBuilder(
fetchersKindCollectionBuilder,
fetchersKind,
(offset, pSize) =>
Enumerable
.Range(offset, pSize)
.ToArray(),
countFetcher);
var dataVirtualizingCollection =
StandardDataVirtualizingCollection(
indexAccessBehaviorCollectionBuilder,
indexAccessBehavior,
() => - 1);
return(dataVirtualizingCollection);
}
