public void CreateLyric(int?nextToOrder = null)
{
var maxOrder = OrderUtils.GetMaxOrderNumber(Lyrics.ToArray());
var order = nextToOrder ?? maxOrder;
if (order < 0 && order > maxOrder + 1)
{
throw new ArgumentOutOfRangeException(nameof(order));
}
changeHandler?.BeginChange();
// Shifting order that order is larger than current lyric.
OrderUtils.ShiftingOrder(Lyrics.Where(x => x.Order > order).ToArray(), 1);
// Add new lyric to target order.
var createLyric = new Lyric
{
Text = "New lyric",
Order = order + 1,
};
beatmap.Add(createLyric);
changeHandler?.EndChange();
}
public void TestGetMaxOrderNumber(int[] orders, int number)
{
var objects = orders.Select(x => new TestOrderObject {
Order = x
}).ToArray();
var result = OrderUtils.GetMaxOrderNumber(objects);
Assert.AreEqual(result, number);
}
public void CreateSinger(Singer singer)
{
singer.Order = OrderUtils.GetMaxOrderNumber(Singers.ToArray()) + 1;
Singers.Add(singer);
}