/// <summary>
/// 添加节点
/// </summary>
internal int AddNode(TreeGridNodeCollection nodes, object info)
{
var parentId = (int)info.GetValue(nameof(IParent.ParentId));
if (parentId == 0)
{
return(nodes.Add(info.GetValues()).RowIndex);
}
for (int i = 0; i < nodes.Count; i++)
{
if (nodes[i].Cells[IdColumn()].Value.ToInt() == parentId)
{
if (!nodes[i].IsExpanded)
{
nodes[i].Expand();
}
return(nodes[i].Nodes.Add(info.GetValues()).RowIndex);
}
if (nodes[i].Nodes.Count > 0)
{
if (!nodes[i].IsExpanded)
{
nodes[i].Expand();
}
var index = AddNode(nodes[i].Nodes, info);
if (index > -1)
{
return(index);
}
}
}
return(-1);
}
private void CollapseAll(TreeGridNodeCollection nodes)
{
for (int i = 0; i < nodes.Count; i++)
{
if (nodes[i].Nodes.Count > 0)
{
CollapseAll(nodes[i].Nodes);
nodes[i].Collapse();
}
}
}
private void ExpandAll(TreeGridNodeCollection nodes)
{
for (int i = 0; i < nodes.Count; i++)
{
if (nodes[i].Nodes.Count > 0)
{
nodes[i].Expand();
ExpandAll(nodes[i].Nodes);
}
}
}
/// <summary>
/// 删除节点
/// </summary>
internal bool DeleteNode(TreeGridNodeCollection nodes, int id)
{
for (int i = 0; i < nodes.Count; i++)
{
if (nodes[i].Cells[IdColumn()].Value.ToInt() == id)
{
nodes.RemoveAt(i);
return(true);
}
if (nodes[i].IsExpanded && nodes[i].Nodes.Count > 0)
{
if (DeleteNode(nodes[i].Nodes, id))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// 更新节点
/// </summary>
internal bool UpdateNode(TreeGridNodeCollection nodes, object info, int id)
{
for (int i = 0; i < nodes.Count; i++)
{
if (nodes[i].Cells[IdColumn()].Value.ToInt() == id)
{
nodes[i].Update(info);
return(true);
}
if (nodes[i].IsExpanded && nodes[i].Nodes.Count > 0)
{
if (UpdateNode(nodes[i].Nodes, info, id))
{
return(true);
}
}
}
return(false);
}
