/// <summary>
/// Free up memory
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public async void Page_Unloaded(object sender, RoutedEventArgs e)
{
if (App.isInBackgroundMode)
{
featuredOffset = 0;
newReleasesOffset = 0;
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
MainPivot.SelectionChanged -= MainPivot_SelectionChanged;
FeaturedPlaylists.ItemClick -= FeaturedPlaylist_ItemClick;
FeaturedPlaylists.ClearValue(XYFocusUpProperty);
while (FeaturedPlaylists.Items.Count > 0)
{
PlaylistHero playlistHero = FeaturedPlaylists.Items.ElementAt(0) as PlaylistHero;
FeaturedPlaylists.Items.Remove(playlistHero);
playlistHero.Unload();
}
FeaturedRefresh.Click -= FeaturedRefresh_Click;
FeaturedMore.Click -= FeaturedMore_Click;
NewReleasesAlbums.ItemClick -= NewReleasesAlbums_ItemClick;
NewReleasesAlbums.ClearValue(XYFocusUpProperty);
while (NewReleasesAlbums.Items.Count > 0)
{
AlbumHero albumHero = NewReleasesAlbums.Items.ElementAt(0) as AlbumHero;
NewReleasesAlbums.Items.Remove(albumHero);
albumHero.Unload();
}
NewReleasesRefresh.Click -= NewReleasesRefresh_Click;
NewReleasesMore.Click -= NewReleasesMore_Click;
});
}
}
/// <summary>
/// Refreshes the list of featured playlists
/// </summary>
/// <param name="sender">The refresh button</param>
/// <param name="e">The routed event arguments</param>
private async void FeaturedRefresh_Click(object sender, RoutedEventArgs e)
{
featuredOffset = 0;
while (FeaturedPlaylists.Items.Count > 0)
{
PlaylistHero playlistHero = FeaturedPlaylists.Items.ElementAt(0) as PlaylistHero;
playlistHero.Unload();
FeaturedPlaylists.Items.Remove(playlistHero);
}
await LoadFeaturedPlaylists();
}
/// <summary>
/// Loads the featured playlists
/// </summary>
/// <returns></returns>
private async Task LoadFeaturedPlaylists()
{
long loadingKey = DateTime.Now.Ticks;
MainPage.AddLoadingLock(loadingKey);
FeaturedMore.IsEnabled = false;
FeaturedRefresh.IsEnabled = false;
App.mainPage.SetLoadingProgress(PlaybackSource.Spotify, 0, 1, loadingKey);
UriBuilder featuredPlaylistsBuilder = new UriBuilder(FEATURED_HREF);
List <KeyValuePair <string, string> > queryParams = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("limit", featuredLimit.ToString()),
new KeyValuePair <string, string>("offset", featuredOffset.ToString())
};
featuredPlaylistsBuilder.Query = RequestHandler.ConvertToQueryString(queryParams);
string playlistsString = await RequestHandler.SendCliGetRequest(featuredPlaylistsBuilder.Uri.ToString());
JsonObject featuredPlaylistsJson = new JsonObject();
try
{
featuredPlaylistsJson = JsonObject.Parse(playlistsString);
}
catch (COMException)
{
return;
}
if (featuredPlaylistsJson.TryGetValue("message", out IJsonValue messageJson) && messageJson.ValueType == JsonValueType.String)
{
FeaturedMessage.Text = messageJson.GetString();
}
if (featuredPlaylistsJson.TryGetValue("playlists", out IJsonValue playlistsJson) && playlistsJson.ValueType == JsonValueType.Object)
{
JsonObject playlists = playlistsJson.GetObject();
if (playlists.TryGetValue("total", out IJsonValue totalJson) && totalJson.ValueType == JsonValueType.Number)
{
featuredMax = Convert.ToInt32(totalJson.GetNumber());
}
if (playlists.TryGetValue("items", out IJsonValue itemsJson) && itemsJson.ValueType == JsonValueType.Array)
{
JsonArray playlistsArray = itemsJson.GetArray();
foreach (JsonValue playlistJson in playlistsArray)
{
if (playlistJson.GetObject().TryGetValue("href", out IJsonValue fullHref) && fullHref.ValueType == JsonValueType.String)
{
string fullPlaylistString = await RequestHandler.SendCliGetRequest(fullHref.GetString());
Playlist playlist = new Playlist();
await playlist.SetInfo(fullPlaylistString);
PlaylistHero playlistHero = new PlaylistHero(playlist);
FeaturedPlaylists.Items.Add(playlistHero);
App.mainPage.SetLoadingProgress(PlaybackSource.Spotify, FeaturedPlaylists.Items.Count, playlistsArray.Count, loadingKey);
}
}
}
}
FeaturedRefresh.IsEnabled = true;
if (featuredOffset + featuredLimit >= featuredMax)
{
FeaturedMore.Content = "No More";
FeaturedMore.IsEnabled = false;
}
else
{
FeaturedMore.Content = "More";
FeaturedMore.IsEnabled = true;
}
MainPage.RemoveLoadingLock(loadingKey);
}
