protected override void OnResetItems(IEnumerable <PlaylistItem> sourceItems, PlaylistItem item)
{
var copied = sourceItems.ToList();
// 再生済みアイテムを同期
var existPlayedItems = PlayedItem.Where(x => copied.Any(y => y.ContentId == x.ContentId));
PlayedItem = new Stack <PlaylistItem>(existPlayedItems);
// ランダム化したアイテムの同期
RandamizedItems.Clear();
var shuffledUnplayItems = copied
.Where(x => !PlayedItem.Any(y => x.ContentId == y.ContentId))
.Shuffle();
foreach (var shuffled in shuffledUnplayItems)
{
RandamizedItems.Enqueue(shuffled);
}
// Currentを同期
// 現在再生中のアイテムが削除されていた場合、Currentをnullにするだけ
if (Current != null && !copied.Any(x => x.ContentId == Current.ContentId))
{
Current = null;
}
}
private void ResetRandmizedItems(IEnumerable <PlaylistItem> items)
{
RandamizedItems.Clear();
if (items != null)
{
var firstItem = items.Take(1).SingleOrDefault();
if (firstItem != null)
{
RandamizedItems.Add(firstItem);
RandamizedItems.AddRange(items.Skip(1).Shuffle());
}
}
}
private void ResetRandmizedItems()
{
RandamizedItems.Clear();
if (SourceItems != null)
{
var firstItem = SourceItems.Take(1).SingleOrDefault();
if (firstItem != null)
{
RandamizedItems.Add(firstItem);
RandamizedItems.AddRange(SourceItems.Skip(1).Shuffle());
}
}
}