protected override async Task <IAsyncEnumerable <MylistVideItemViewModel> > GetPagedItemsImpl(int head, int count)
{
var tail = head + count;
if (Mylist.Count < tail && Mylist.Count != Mylist.ItemCount)
{
// さらに読み込みが必要な場合は取得する
var added = await MylistProvider.GetMylistGroupVideo(Mylist, (uint)count);
}
return(Mylist.Skip(head).Take(count).Select(x =>
{
var vm = new MylistVideItemViewModel(x, Mylist);
return vm;
})
.ToAsyncEnumerable());
}