/// <summary>
/// 根据指定值获取节点
/// </summary>
/// <param name="list"></param>
/// <param name="value"></param>
/// <returns></returns>
private CascaderNode GetNodeByValue(List <CascaderNode> list, string value)
{
if (list == null)
{
return(null);
}
CascaderNode result = null;
foreach (var node in list)
{
if (node.Value == value)
{
return(node);
}
if (node.HasChildren)
{
var nd = GetNodeByValue(node.Children.ToList(), value);
if (nd != null)
{
result = nd;
}
}
}
return(result);
}
/// <summary>
/// 选中节点
/// </summary>
/// <param name="cascaderNode"></param>
/// <param name="selectedType"></param>
internal void SetSelectedNode(CascaderNode cascaderNode, SelectedTypeEnum selectedType)
{
if (cascaderNode == null)
{
return;
}
SelectedType = selectedType;
if (selectedType == SelectedTypeEnum.Click)
{
_selectedNodes.Clear();
SetSelectedNodeWithParent(cascaderNode, ref _selectedNodes);
_renderNodes = _selectedNodes;
if (ChangeOnSelect || !cascaderNode.HasChildren)
{
SetValue(cascaderNode.Value);
}
}
else
{
_hoverSelectedNodes.Clear();
SetSelectedNodeWithParent(cascaderNode, ref _hoverSelectedNodes);
_renderNodes = _hoverSelectedNodes;
}
_renderNodes.Sort((x, y) => x.Level.CompareTo(y.Level)); //Level 升序排序
if (!cascaderNode.HasChildren)
{
ToggleState = false;
IsOnCascader = false;
}
}
/// <summary>
/// 下拉节点单击
/// </summary>
/// <param name="node"></param>
private void NodeOnClick(CascaderNode node)
{
if (node.Disabled)
{
return;
}
SetSelectedNode(node, SelectedTypeEnum.Click);
}
/// <summary>
/// 设置选中所有父节点
/// </summary>
/// <param name="node"></param>
/// <param name="list"></param>
private void SetSelectedNodeWithParent(CascaderNode node, ref List <CascaderNode> list)
{
if (node == null)
{
return;
}
list.Add(node);
SetSelectedNodeWithParent(node.ParentNode, ref list);
}
/// <summary>
/// 初始化节点属性(Level, ParentNode)
/// </summary>
/// <param name="list"></param>
/// <param name="parentNode"></param>
/// <param name="level"></param>
private void InitCascaderNodeState(List <CascaderNode> list, CascaderNode parentNode, int level)
{
if (list == null)
{
return;
}
foreach (var node in list)
{
node.Level = level;
node.ParentNode = parentNode;
if (node.HasChildren)
{
InitCascaderNodeState(node.Children.ToList(), node, level + 1);
}
}
}
/// <summary>
/// 下拉节点移入
/// </summary>
/// <param name="node"></param>
private void NodeOnMouseOver(CascaderNode node)
{
if (ExpandTrigger != "hover")
{
return;
}
if (node.Disabled)
{
return;
}
if (!node.HasChildren)
{
return;
}
SetSelectedNode(node, SelectedTypeEnum.Hover);
}