private BaseEvent ProcessBatch(BatchEvent batchEvent)
{
if (batchEvent.Count == 0)
{
return(null);
}
if (batchEvent.Count == 1)
{
return(batchEvent.Pop());
}
return(batchEvent);
}
/// <summary>
/// Performs a redo.
/// </summary>
public void Redo()
{
if (!CanRedo)
{
throw new InvalidOperationException("There is nothing to redo");
}
if (IsInBatch)
{
throw new InvalidOperationException("Finish the active batch first");
}
var @event = _redoStack.Pop();
RollbackEvent(@event is BatchEvent ? new BatchEvent((BatchEvent)@event) : @event, false);
NotifyChange(@event);
}