public async Task UpdateFeedAsync()
{
for (int i = 1; i < Feeds.Count(); i++)
{
await FeedDataSource.UpdateArticles(Feeds[i]);
}
Initialized?.Invoke(this, EventArgs.Empty);
}
/// <summary>
/// Populates the Feeds list and initializes the CurrentFeed and CurrentArticle properties.
/// </summary>
public async Task InitializeFeedsAsync()
{
Feeds.Clear();
(await FeedDataSource.GetFeedsAsync()).ForEach(feed => Feeds.Add(feed));
CurrentFeed = Feeds[Feeds.Count == 1 ? 0 : 1];
//CurrentArticle = CurrentFeed.Articles.FirstOrDefault() ?? CurrentArticle;
if (FavoritesFeed.Articles.Count == 0)
{
FavoritesFeed.ErrorMessage = NO_ARTICLES_MESSAGE;
}
FavoritesFeed.Articles.CollectionChanged += async(s, e) =>
{
// This handles list saving for both newly-starred items and for
// reordering of the Favorites list (which causes a Remove followed by an Add).
// List saving for removals due to an unstarring are handled in FeedView.xaml.cs.
if (e.Action == NotifyCollectionChangedAction.Add)
{
await SaveFavoritesAsync();
}
FavoritesFeed.ErrorMessage = FavoritesFeed.Articles.Count > 0 ? null : NO_ARTICLES_MESSAGE;
};
Initialized?.Invoke(this, EventArgs.Empty);
}
