private void AppendNode(SelectionRuleNode ruleNode, Node parent)
{
if (ruleNode != null)
{
Node node = RuleEditorHelper.CreateNode(ruleNode, _model);
if (parent != null)
{
parent.Nodes.Add(node);
}
else
{
_decisionTree.Nodes.Add(node);
_decisionTree.DisplayRootNode = node;
}
if (ruleNode is NaryRuleNode nary)
{
if (nary.Children.Count > 0)
{
foreach (SelectionRuleNode item in nary.Children)
{
AppendNode(item, node);
}
}
}
else if (ruleNode is UnaryRuleNode unary && unary.Child != null)
{
AppendNode(unary.Child, node);
}
}
}
private void _decisionTree_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetData(typeof(Node)) is Node)
{
e.Effect = DragDropEffects.Move;
}
else
{
ButtonItem item = (ButtonItem)e.Data.GetData(typeof(ButtonItem));
if (item == null)
{
e.Effect = DragDropEffects.None;
}
else
{
var node = RuleEditorHelper.CreateNode(item, _model);
e.Data.SetData(typeof(Node), node);
e.Effect = DragDropEffects.Copy;
_validator.ClearFailedValidations();
}
}
}
private void Clear()
{
RuleEditorHelper.ClearNode(_decisionTree.DisplayRootNode);
_decisionTree.DisplayRootNode = null;
_decisionTree.Nodes.Clear();
}
