/// <summary>並べ替え開始コールバックの登録</summary>
 public void AddOnBeginOrderListener(UnityAction <int> onBeginOrderAction)
 {
     if (onBeginOrderAction != null)
     {
         if (onBeginOrder == null)
         {
             onBeginOrder = new OnReOrderCallback();
         }
         onBeginOrder.AddListener(onBeginOrderAction);
     }
 }
 /// <summary>項目選択コールバックの登録</summary>
 public void AddOnSelectListener(UnityAction <int> onSelectAction)
 {
     if (onSelectAction != null)
     {
         if (onSelect == null)
         {
             onSelect = new OnReOrderCallback();
         }
         onSelect.AddListener(onSelectAction);
     }
 }