protected void SetupAutoSaveLoad(string settingsName)
{
Settings = ApplicationData.Current.RoamingSettings.CreateContainer("Settings" + settingsName, ApplicationDataCreateDisposition.Always);
AutoLoad = ReactiveCommand.CreateAsyncTask(async x =>
{
await Task.Run(() =>
{
if (!string.IsNullOrEmpty(Settings.Values["json"] + ""))
{
JsonConvert.PopulateObject(Settings.Values["json"] + "", this);
}
return(true);
});
});
AutoSave = ReactiveCommand.CreateAsyncTask(async x =>
{
await Task.Run(() =>
{
var str = JsonConvert.SerializeObject(this);
Settings.Values["json"] = str;
return(true);
});
});
this.AutoPersist(x =>
{
return(Observable.Create <Unit>((y) => AutoSave.ExecuteAsyncTask()));
});
Settings.WhenAnyValue(x => x.Values).InvokeCommand(this, x => x.AutoLoad);
}
public SearchViewModel()
{
Tracks = new ReactiveList <Track>();
Artists = new ReactiveList <Artist>();
Albums = new ReactiveList <Album>();
searchTracks = ReactiveCommand.CreateAsyncTask(ImplSearchTracks);
searchTracks.Subscribe(tracks =>
{
using (Tracks.SuppressChangeNotifications())
{
Tracks.Clear();
Tracks.AddRange(tracks);
}
});
searchArtists = ReactiveCommand.CreateAsyncTask(ImplSearchArtists);
searchArtists.Subscribe(artists =>
{
using (Artists.SuppressChangeNotifications())
{
Artists.Clear();
Artists.AddRange(artists);
}
});
searchAlbums = ReactiveCommand.CreateAsyncTask(ImplSearchAlbums);
searchAlbums.Subscribe(albums =>
{
using (Albums.SuppressChangeNotifications())
{
Albums.Clear();
Albums.AddRange(albums);
}
});
var canSearch = this.WhenAnyValue(vm => vm.Query)
.Select(query => !string.IsNullOrEmpty(query));
Search = ReactiveCommand.CreateAsyncTask(canSearch, async(arg) =>
{
var tasks = new Task[] {
searchTracks.ExecuteAsyncTask(),
searchArtists.ExecuteAsyncTask(),
searchAlbums.ExecuteAsyncTask()
};
await Task.WhenAll(tasks);
});
Search.Subscribe(_ => SearchCompleted());
}
