public TreeNodeVm(TreeNodeVm parentNodeVm, object item, IExpandedProvider expanded = null)
{
Item = item;
Id = (GetItemProperty("Id") as string) ?? Guid.NewGuid().ToString("N");
_expanded = expanded;
Parent = parentNodeVm;
Children = new List <TreeNodeVm>();
IsExpanded = _expanded?.GetExpanded(Id) ?? false;
IsDraggable = parentNodeVm != null;
Name = GetItemProperty("Name") as string;
Icon = GetItemProperty("Icon") as string;
CreateChildCfgNodes();
}
// ReSharper disable once UnusedMember.Global
public void TreeSelect(string nodeId)
{
var node = _rootNode.FindNodeById(nodeId);
if (node == null)
{
return;
}
foreach (var treeNode in _rootNode.AllNodes())
{
treeNode.IsSelected = false;
}
node.IsSelected = true;
SelectedNode = node;
SelectionChanged();
}
protected void SetRootNode(object item, bool showRootNode = true, bool expandRootNodes = false)
{
_rootNode = new TreeNodeVm(null, item);
RootNodes = showRootNode
? new List <TreeNodeVm> {
_rootNode
}
: _rootNode.Children;
if (!expandRootNodes)
{
return;
}
foreach (var node in RootNodes)
{
node.IsExpanded = true;
}
}
private void CreateChildCfgNodes()
{
if (!(GetItemProperty("Children") is IEnumerable <object> children))
{
return;
}
if (Children.Any())
{
return;
}
foreach (var child in children)
{
var childNode = new TreeNodeVm(this, child, _expanded);
childNode.CreateChildCfgNodes();
Children.Add(childNode);
}
}