private void BookOpened(Task <EpubBook> task)
{
EpubBook epubBook = task.Result;
Navigation = new ObservableCollection <NavigationItemViewModel>(bookModel.GetNavigation(epubBook));
ReadingOrder = new ObservableCollection <HtmlContentFileViewModel>(bookModel.GetReadingOrder(epubBook));
if (ReadingOrder.Any())
{
CurrentHtmlContentFile = ReadingOrder.First();
if (ReadingOrder.Count > 1)
{
nextHtmlContentFile = ReadingOrder[1];
}
}
IsLoading = false;
NotifyPropertyChanged(nameof(IsPreviousButtonVisible));
NotifyPropertyChanged(nameof(IsNextButtonVisible));
}