void RefreshItems()
{
if (Playlist != null)
{
WeakReferenceMessenger.Default.Register <PlaylistItemRemovedMessage, PlaylistId>(this, Playlist.PlaylistId, (r, m) =>
{
var args = m.Value;
foreach (var video in args.RemovedItems)
{
var removedItem = ItemsView.Cast <VideoListItemControlViewModel>().FirstOrDefault(x => x.VideoId == video.VideoId);
if (removedItem != null)
{
ItemsView.Remove(removedItem);
}
}
PlaylistPlayAllCommand.NotifyCanExecuteChanged();
});
WeakReferenceMessenger.Default.Register <PlaylistItemAddedMessage, PlaylistId>(this, Playlist.PlaylistId, (r, m) =>
{
var args = m.Value;
int index = ItemsView.Count;
foreach (var video in args.AddedItems)
{
var nicoVideo = _nicoVideoProvider.GetCachedVideoInfo(video.VideoId);
ItemsView.Add(new VideoListItemControlViewModel(nicoVideo)
{
PlaylistItemToken = new PlaylistItemToken(Playlist, SelectedSortOptionItem, video)
});
}
PlaylistPlayAllCommand.NotifyCanExecuteChanged();
});
_localMylistManager.LocalPlaylists.ObserveRemoveChanged()
.Subscribe(removed =>
{
if (Playlist.PlaylistId == removed.PlaylistId)
{
_pageManager.ForgetLastPage();
_pageManager.OpenPage(HohoemaPageType.UserMylist);
}
})
.AddTo(_navigationDisposables);
}
}