public void RollbackTo(TrackableListTracker <T> tracker)
{
if (tracker == null)
{
throw new ArgumentNullException("tracker");
}
for (int i = ChangeList.Count - 1; i >= 0; i--)
{
var item = ChangeList[i];
switch (item.Operation)
{
case TrackableListOperation.Insert:
tracker.TrackRemove(item.Index, item.NewValue);
break;
case TrackableListOperation.Remove:
tracker.TrackInsert(item.Index, item.OldValue);
break;
case TrackableListOperation.Modify:
tracker.TrackModify(item.Index, item.NewValue, item.OldValue);
break;
case TrackableListOperation.PushFront:
tracker.TrackPopFront(item.NewValue);
break;
case TrackableListOperation.PushBack:
tracker.TrackPopBack(item.NewValue);
break;
case TrackableListOperation.PopFront:
tracker.TrackPushFront(item.OldValue);
break;
case TrackableListOperation.PopBack:
tracker.TrackPushBack(item.OldValue);
break;
}
}
}
public void ApplyTo(TrackableListTracker <T> tracker)
{
if (tracker == null)
{
throw new ArgumentNullException("tracker");
}
foreach (var item in ChangeList)
{
switch (item.Operation)
{
case TrackableListOperation.Insert:
tracker.TrackInsert(item.Index, item.NewValue);
break;
case TrackableListOperation.Remove:
tracker.TrackRemove(item.Index, item.OldValue);
break;
case TrackableListOperation.Modify:
tracker.TrackModify(item.Index, item.OldValue, item.NewValue);
break;
case TrackableListOperation.PushFront:
tracker.TrackPushFront(item.NewValue);
break;
case TrackableListOperation.PushBack:
tracker.TrackPushBack(item.NewValue);
break;
case TrackableListOperation.PopFront:
tracker.TrackPopFront(item.OldValue);
break;
case TrackableListOperation.PopBack:
tracker.TrackPopBack(item.OldValue);
break;
}
}
}
