/// <summary>
/// 移除当前选中的节点，同时需要更新处理当前节点的同级上节点，下节点
/// </summary>
/// <param name="entityTree">选择的节点</param>
/// <returns>string</returns>
public string RemoveChildrenEntityTree(BaseEntityTree entityTree)
{
string message = "";
try
{
if (entityTree == null)
{
return(NULLMESSAGE);
}
if (this.ChildrenEntityTree == null || this.ChildrenEntityTree.Count > 0)
{
// 如果传入节点的同级上节点不为null
if (entityTree.PrevBaseEntityTree != null)
{
// 删除的最后一个
if (ChildrenEntityTree.IndexOf(entityTree) == ChildrenCount - 1)
{
entityTree.PrevBaseEntityTree.NextBaseEntityTree = null; // 同级上节点的下节点为null
}
else
{
entityTree.PrevBaseEntityTree.NextBaseEntityTree = entityTree.NextBaseEntityTree;
entityTree.NextBaseEntityTree.PrevBaseEntityTree = entityTree.PrevBaseEntityTree;
}
}
this.ChildrenEntityTree.Remove(entityTree);
}
}
catch (Exception ex)
{
message = ex.Message;
}
return(message);
}
/// <summary>
/// 添加孩子节点
/// </summary>
/// <param name="entityTree"></param>
/// <returns>string</returns>
public string AddChildrenEntityTree(BaseEntityTree entityTree)
{
string message = "";
try
{
// 判断是否为空
if (entityTree == null)
{
return(NULLMESSAGE);
}
// 设置新添加孩子节点的深度
entityTree.Depti = this.Depti + entityTree.Depti;
// 设置新添加孩子节点的父节点为当前BaseEntityTree
entityTree.ParentBaseEntityTree = this;
// 添加到集合
if (this.ChildrenEntityTree != null && this.ChildrenEntityTree.Count > 0)
{
// 获取孩子节点集合中的最后一个
BaseEntityTree lastBaseEntityTree = this.ChildrenEntityTree.Last();
// 设置lastBaseEntityTree的同级下节点为当前 新添加孩子节点
if (lastBaseEntityTree != null)
{
lastBaseEntityTree.NextBaseEntityTree = entityTree;
// 设置当前新添节点的同级上节点为lastBaseEntityTree
entityTree.PrevBaseEntityTree = lastBaseEntityTree;
}
}
// 添加到当前集合
this.ChildrenEntityTree.Add(entityTree);
}
catch (Exception ex)
{
message = ex.Message;
}
return(message);
}