private MusicLibrary()
{
ArtistGroupDictionary = CreateObservableGroupDictionary <Artist>();
ArtistsCollection = new CollectionViewSource()
{
IsSourceGrouped = true, Source = ArtistGroupDictionary
};
AlbumGroupDictionary = CreateObservableGroupDictionary <Album>();
AlbumsCollection = new CollectionViewSource()
{
IsSourceGrouped = true, Source = AlbumGroupDictionary
};
SongGroupDictionary = CreateObservableGroupDictionary <Song>();
SongsCollection = new CollectionViewSource()
{
IsSourceGrouped = true, Source = SongGroupDictionary
};
_cache = new MusicLibraryCache();
}
public Task LoadCache(CoreDispatcher dispatcher, StorageFile cacheFile = null)
{
if (Interlocked.CompareExchange(ref _hasLoadedCache, 1, 0) == 1)
{
return(null);
}
return(Task.Run(new Action(() =>
{
try
{
_cache = AsyncInline.Run(new Func <Task <MusicLibraryCache> >(() => MusicLibraryCache.Deserialize(cacheFile)));
var c = dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low,
() =>
{
foreach (Artist artist in _cache.Artists.Values)
{
AddItemToGroup(ArtistGroupDictionary, artist, a => a.ArtistName[0]);
}
foreach (List <Album> albums in _cache.Albums.Values)
{
foreach (Album album in albums)
{
AddItemToGroup(AlbumGroupDictionary, album, a => a.AlbumName[0]);
}
}
foreach (List <Song> songs in _cache.Songs.Values)
{
foreach (Song song in songs)
{
AddItemToGroup(SongGroupDictionary, song, a => song.SongTitle[0]);
}
}
});
}
catch { }
})));
}