private void UpdatePages(IEnumerable <ComicPageData> newPages)
{
if (newPages == null || !newPages.Any())
{
// Use history if no actual pages exist
newPages = Comic.RecentHistory
.Select(
historyItem => new ComicPageData
{
Comic = Comic,
Name = historyItem,
Url = historyItem,
IsRead = true
});
}
var reversed = newPages
.Reverse()
.ToList();
// Need to use ObservableCollection methods so UI is updated with animation
Pages.MatchList(reversed);
PagesUpdated?.Invoke();
// Clear ScrollTo target since page shuld have been scrolled during PagesUpdated event (if desired)
scrollToPageTarget = ComicPageTargetType.None;
}
public ComicDetailPageModel(ComicPageTargetType scrollTo)
{
scrollToPageTarget = scrollTo;
OpenOptionsCommand = new AsyncCommand(OpenOptions);
RefreshCommand = new AsyncCommand(async() =>
{
try
{
IsRefreshing = true;
var cancelToken = pageCancelTokenSource.Token;
cancelToken.ThrowIfCancellationRequested();
await Refresh(cancelToken);
IsRefreshing = false;
}
catch (OperationCanceledException) { }
});
OpenPageCommand = new AsyncCommand <ComicPageData>(OpenPage);
}
