/// <summary>
/// 处理开关按钮，展开/折叠处理子节点
/// </summary>
/// <param name="index">Index.</param>
protected void ToggleNode(int index)
{
//当前开关按钮的节点
var node = NodesList[index];
if (node.Node.Nodes == null)
{
return;
}
NodesList.BeginUpdate();
//需要折叠
if (node.Node.IsExpanded)
{
var range = node.Node.AllUsedNodesCount;
if (range > 0)
{
MoveSelectedIndiciesUp(index, range);
NodesList.RemoveRange(index + 1, range);
}
node.Node.PauseObservation = true;
node.Node.IsExpanded = false;
node.Node.PauseObservation = false;
node.Node.UsedNodesCount = 0;
}
else//需要展开
{
var sub_list = new ObservableList <ListNode <TItem> >();
var used = Nodes2List(node.Node.Nodes, node.Depth + 1, sub_list);
MoveSelectedIndiciesDown(index, sub_list.Count);
NodesList.InsertRange(index + 1, sub_list);
node.Node.PauseObservation = true;
node.Node.IsExpanded = true;
node.Node.PauseObservation = false;
node.Node.UsedNodesCount = used;
}
NodesList.EndUpdate();
}
