/// <summary>
/// コンストラクタ
/// </summary>
/// <param name="source">INotifyCollectionChangedオブジェクト</param>
public CollectionChangedEventListener([NotNull] INotifyCollectionChanged source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
_bag = new AnonymousCollectionChangedEventHandlerBag(source);
Initialize(
h => source.CollectionChanged += h,
h => source.CollectionChanged -= h,
(sender, e) =>
{
if (e != null)
{
_bag.ExecuteHandler(e);
}
});
}
/// <summary>
/// コンストラクタ。リスナのインスタンスの作成と同時にハンドラを一つ登録します。
/// </summary>
/// <param name="source">INotifyCollectionChangedオブジェクト</param>
/// <param name="handler">NotifyCollectionChangedイベントハンドラ</param>
public CollectionChangedEventListener(INotifyCollectionChanged source, NotifyCollectionChangedEventHandler handler)
{
_bag = new AnonymousCollectionChangedEventHandlerBag(source, handler);
Initialize(h => source.CollectionChanged += h, h => source.CollectionChanged -= h, (sender, e) => _bag.ExecuteHandler(e));
}