public override void Do()
{
if (InsertIndex.Equals(-1))
{
foreach (var lyric in Items)
{
if (!IsReverseAdd)
{
TargetList.Add(lyric);
}
else
{
TargetList.Insert(0, lyric);
}
}
return;
}
foreach (var lyric in Items)
{
if (!IsReverseAdd)
{
TargetList.Insert(InsertIndex + 1, lyric);
}
else
{
TargetList.Insert(InsertIndex, lyric);
}
}
}
public int CompareTo(object obj)
{
if (nameof(obj).Equals(nameof(InsertIndex)))
{
return(InsertIndex.CompareTo(obj));
}
if (nameof(obj).Equals(nameof(UpdateIndex)))
{
return(UpdateIndex.CompareTo(obj));
}
else
{
return(0);
}
}