internal UpcomingMovieViewModel(UpcomingMovieService upcomingMovieService)
{
_upcomingMovieService = upcomingMovieService ?? throw new ArgumentException("upcomingMovieService");
Title = "TMDb Upcoming Movies";
ListView_ItemsSource = new InfiniteScrollCollection <MovieModel>
{
OnLoadMore = async() =>
{
try
{
if (IsBusy)
{
return(null);
}
IsBusy = true;
var page = (uint)(ListView_ItemsSource.Count / PageSize) + 1;
if (totalPages > 0 &&
page >= totalPages)
{
IsBusy = false;
return(null);
}
var model = await GetMovieCollectionAsync(page);
totalPages = (uint)model.TotalPages;
IsBusy = false;
return(model.MovieCollection);
}
catch (Exception ex)
{
IsBusy = false;
Debug.WriteLine(ex);
throw;
}
}
};
ListView_RefreshCommand = new Command(async() => await ExecuteListView_RefreshCommand_HandlerAsync());
ToolbarItemSearch_Command = new Command(async() => await ToolbarItemSearch_Command_HandlerAsync());
_ExecuteListView_RefreshCommand_HandlerAsync();
}
/// <summary>
/// Constructor.
/// </summary>
static Singleton()
{
GenreService = new GenreService();
SearchMovieService = new SearchMovieService();
UpcomingMovieService = new UpcomingMovieService();
}
