/// <summary>
/// 获取最大排序号兄弟节点(可能为自身)
/// </summary>
/// <returns></returns>
protected virtual T GetLastSibling()
{
if (SiblingNodes.Count() > 0)
{
return(SiblingNodes.Last());
}
return(null);
}
/// <summary>
/// 获取所有后继兄弟节点
/// </summary>
/// <returns></returns>
protected virtual IList <T> GetNextSiblingNodes()
{
if (SiblingNodes != null)
{
IEnumerable <T> nsibs = SiblingNodes.Where(tent => tent.SortIndex > this.SortIndex);
if (nsibs.Count() > 0)
{
return(nsibs.ToList());
}
}
return(null);
}
public IEnumerable <MoveTreeNode <PostMoveState> > FlattenToPgnOrder()
{
if (!string.IsNullOrWhiteSpace(Value.Value.San))
{
yield return(Value);
}
foreach (var siblingNode in SiblingNodes.Concat(new[] { Next }).Where(x => x != null))
{
foreach (var siblingInfo in siblingNode.FlattenToPgnOrder())
{
yield return(siblingInfo);
}
}
}
/// <summary>
/// 获取后继兄弟节点
/// </summary>
/// <returns></returns>
protected virtual T GetNextSibling()
{
if (SiblingNodes != null)
{
IEnumerable <T> psibs = SiblingNodes.Where(tent => tent.SortIndex > this.SortIndex);
if (psibs.Count() > 0)
{
// 从小到大排序的第一个
return(psibs.OrderBy(tent => tent.SortIndex).First());
}
return(null);
}
return(null);
}
/// <summary>
/// 获取前置兄弟节点
/// </summary>
/// <returns></returns>
protected virtual T GetPrevSibling()
{
if (SiblingNodes != null)
{
IEnumerable <T> psibs = SiblingNodes.Where(tent => tent.SortIndex < this.SortIndex);
if (psibs.Count() > 0)
{
// 从大到小排序的第一个
return(psibs.OrderByDescending(tent => tent.SortIndex).First());
}
return(null);
}
return(null);
}