public async Task <IEnumerable <int> > LoadAllPreviewBookIdsAsync(BookCategory.Category category)
{
await Task.Delay(250);
if (category == BookCategory.Category.Manga)
{
return(MangaPreviewItems.Select(book => book.Id).ToList());
}
else
{
return(RecommendationPreviewItems.Select(book => book.Id).ToList());
}
}
public BookCarouselPage(int selectedBookId, IEnumerable <int> allBookIds, BookCategory.Category selectedBookCategory)
{
InitializeComponent();
Title = (selectedBookCategory == BookCategory.Category.Manga) ? "Mangaa suoraan Jaappanista" : "Suosittelemme sinulle";
SetChildrenPages(selectedBookId, allBookIds, selectedBookCategory);
var messaging = App.Container.Resolve <IMessageQueue>();
messaging.Subscribe <PurchaseBookViewModel, byte[]>(this, PurchaseBookViewModel.ShowBookCoverMessage, async(sender, imageBytes) =>
{
await Navigation.PushAsync(new BookCoverPage(imageBytes));
});
}
public async void LoadNextBooks(BookCategory.Category category)
{
if (!m_searchForMoreBooks || IsBusy)
{
return;
}
IsBusy = true;
try
{
IEnumerable <BookPreview> loadedBooks = await m_bookStore.LoadPreviewBookAsync(m_currentBookItemIndex, LoadItemsCount, category);
UpdateLoadedBooks(loadedBooks);
}
catch (Exception ex)
{
m_messaging.Send(this, ex);
}
IsBusy = false;
}
public async Task <IEnumerable <BookPreview> > LoadPreviewBookAsync(int startFrom, int takeCount, BookCategory.Category category)
{
await Task.Delay(500);
if (category == BookCategory.Category.Manga)
{
return(MangaPreviewItems.Skip(startFrom).Take(takeCount).ToList());
}
else
{
return(RecommendationPreviewItems.Skip(startFrom).Take(takeCount).ToList());
}
}
private void SetChildrenPages(int selectedBookId, IEnumerable <int> allBookIds, BookCategory.Category selectedBookCategory)
{
IList <PurchaseBookPage> allBookPages = new List <PurchaseBookPage>();
foreach (var id in allBookIds)
{
allBookPages.Add(new PurchaseBookPage(id));
}
foreach (var page in allBookPages)
{
Children.Add(page);
}
SelectedItem = allBookPages.First(b => b.BookId == selectedBookId);
}