public AlbumListViewModel(IFacebookPhotoService photoService = null, IViewStackService viewStackService = null)
: base(viewStackService)
{
photoService = photoService ?? Locator.Current.GetService <IFacebookPhotoService>();
LoadAlbums = ReactiveCommand.CreateFromTask(
async() =>
{
var albumData = await photoService.GetAlbumsAsync(Config.Constants.FACEBOOK_PAGE_ID, Config.Constants.FACEBOOK_PAGE_ACCESS_TOKEN, default(CancellationToken));
var viewModels = new List <AlbumCellViewModel>(albumData.Data.Count);
foreach (var model in albumData.Data)
{
var vm = new AlbumCellViewModel(model);
viewModels.Add(vm);
}
return(viewModels);
});
_albums = LoadAlbums
.SubscribeOn(RxApp.TaskpoolScheduler)
.ToProperty(this, vm => vm.Albums, scheduler: RxApp.MainThreadScheduler);
this
.WhenAnyValue(vm => vm.SelectedItem)
.Where(x => x != null)
.SelectMany(x => LoadSelectedPage(x))
.Subscribe();
LoadAlbums
.ThrownExceptions
.Subscribe(ex => this.Log().WarnException("Failed to load albums", ex));
}
public ArtistDetailViewModel(Artist artist)
{
Artist = artist;
PopularSongs = new ReactiveList <Track> ();
Albums = new ReactiveList <Album> ();
Playlists = new ReactiveList <Playlist> ();
var artistAvailable = this.WhenAnyValue(vm => vm.Artist)
.Select(val => val != null);
LoadPopularSongs = ReactiveCommand.CreateAsyncTask(artistAvailable, _ => Artist.MediaProvider.GetPopularTracks(Artist));
LoadAlbums = ReactiveCommand.CreateAsyncTask(artistAvailable, _ => Artist.MediaProvider.GetAlbums(Artist));
LoadPlaylists = ReactiveCommand.CreateAsyncTask(artistAvailable, _ => Artist.MediaProvider.GetPlaylists(Artist));
LoadPopularSongs.Subscribe(tracks => {
using (PopularSongs.SuppressChangeNotifications()) {
PopularSongs.Clear();
PopularSongs.AddRange(tracks);
}
});
LoadAlbums.Subscribe(albums => {
using (Albums.SuppressChangeNotifications()) {
Albums.Clear();
Albums.AddRange(albums);
}
});
LoadPlaylists.Subscribe(playlists => {
using (Playlists.SuppressChangeNotifications()) {
Playlists.Clear();
Playlists.AddRange(playlists);
}
});
}
