дерево

KOP_Labs/KOP_Labs/CustomTree.cs

@@ -15,106 +15,81 @@ namespace KOP_Labs
 {
     public partial class CustomTree : UserControl
     {
+        private List<string> hierarchy;
+
         public CustomTree()
         {
             InitializeComponent();
-        }
+            hierarchy = new List<string>();
-        
-        public List<string>? Hierarcy {  get; set; }
-        public void Clear()
-        {
-            treeView.Nodes.Clear();
         }
 
-        public void AddNode<T>(T obj) {
+        public void SetHierarcy(List<string> hierarchy)
-            if (Hierarcy == null)
-            {
-                throw new HierarcyNullException("Иерархия не задана");
-            }
-            if (obj == null)
-            {
-                throw new ArgumentNullException("Объект не найден");
-            }
-            var values = GetValuesVithStructure(obj);
-            var treeNode = new TreeNode();
-            AddNodesToTreeNode(treeView.Nodes, treeNode.Nodes);
-            var nodes = AddElementsToParent(values, treeNode);
-            treeView.Nodes.Clear();
-            AddNodesToTreeNode(nodes.Nodes, treeView.Nodes);
-        }
-        private void AddNodesToTreeNode(TreeNodeCollection fromNodeCollection, TreeNodeCollection toNodeCollection)
         {
-            for (int i = 0; i < fromNodeCollection.Count; i++)
+            this.hierarchy = hierarchy;
-            {
-                var node = fromNodeCollection[i].Clone() as TreeNode;
-                toNodeCollection.Add(node);
-            }
         }
-        private Dictionary<string, (object, bool)> GetValuesVithStructure<T>(T obj) 
+        public int SelectedNodeIndex
         {
-            PropertyInfo[]? properties = obj?.GetType().GetProperties();
+            get
-            var dict = new Dictionary<string, (object, bool)>();
+            {
-            foreach (var elem in Hierarcy!) {
+                return treeView.SelectedNode?.Index ?? -1;
-                PropertyInfo? prop = properties?.Single(prop => prop.Name == elem);
+            }
-                if (prop == null)
+            set
+            {
+                if (value >= 0 && value < treeView.Nodes.Count)
                 {
-                    throw new PropertyNullException(nameof(prop));
+                    treeView.SelectedNode = treeView.Nodes[value];
                 }
-                var atr = prop.GetCustomAttributes()?.SingleOrDefault(atr => atr is AlwaysCreateAttribute);
-                dict[elem] = (prop.GetValue(obj)!, atr == null ? false : true);
-            }
-            return dict;
-        }
-        private TreeNode AddElementsToParent(Dictionary<string, (object, bool)> elements, TreeNode parent)
-        {
-            if (elements.Count == 0)
-            {
-                return parent;
-            }
-            var firstElem = elements.First();
-            var child = parent.Nodes
-                .Cast<TreeNode>()
-                .SingleOrDefault(node => node.Text == (string)firstElem.Value.Item1);
-
-            if (child != null && !firstElem.Value.Item2)
-            {
-                elements.Remove(firstElem.Key);
-                return AddElementsToParent(elements, child).Parent;
-            }
-            else
-            {
-                var newChild = new TreeNode(firstElem.Value.Item1?.ToString() ?? string.Empty);
-
-                newChild.Tag = new Tuple<string, object>(firstElem.Key, firstElem.Value.Item1!);
-
-                elements.Remove(firstElem.Key);
-                parent.Nodes.Add(AddElementsToParent(elements, newChild));
-                return parent;
             }
         }
-        public T GetSelectedNode<T>()
+
-            where T : new()
+        public void AddObjectToTree<T>(T obj)
         {
-            if (Hierarcy == null)
+            TreeNode currentNode = treeView.Nodes.Count > 0 ? treeView.Nodes[0] : treeView.Nodes.Add("");
+
+            foreach (var property in hierarchy)
             {
-                throw new HierarcyNullException("Иерархия не задана");
+                var value = obj.GetType().GetProperty(property).GetValue(obj, null).ToString();
+
+                var childNode = currentNode.Nodes.Cast<TreeNode>().FirstOrDefault(n => n.Text == value);
+                if (childNode == null)
+                {
+                    childNode = currentNode.Nodes.Add(value);
+                }
+
+                currentNode = childNode;
+
             }
+        }    
+
+        public T GetSelectedObject<T>() where T : new()
+        {
             if (treeView.SelectedNode == null)
             {
-                return new T();
+                throw new InvalidOperationException("Узел не выбран");
             }
-            return GetNode(new T(), treeView.SelectedNode);
+
-        }
+            var node = treeView.SelectedNode;
-        private T GetNode<T>(T obj, TreeNode node)
+            if (node.Nodes.Count != 0)
-        {
-            if (node != null && node.Tag != null)
             {
-                var tag = node.Tag as Tuple<string, object>;
+                throw new InvalidOperationException("Узел не конечный, сформировать объект нельзя");
+            }
 
-                var property = obj?.GetType().GetProperty(tag!.Item1);
+            var obj = new T();
-                property?.SetValue(obj, Convert.ChangeType(tag!.Item2, property.PropertyType));
+            foreach (var property in hierarchy)
+            {
+                var value = node.Text;
+                var propInfo = typeof(T).GetProperty(property);
+                if (propInfo == null)
+                {
+                    throw new InvalidOperationException($"Свойство {property} не найдено в классе {typeof(T).Name}");
+                }
+                propInfo.SetValue(obj, Convert.ChangeType(value, propInfo.PropertyType));
 
-                GetNode(obj, node.Parent);
+                node = node.Parent;
+                if (node == null)
+                {
+                    break;
+                }
             }
             return obj;
         }

KOP_Labs/WinFormForTest/Form1.Designer.cs

@@ -59,7 +59,7 @@
             // 
             // customTree1
             // 
-            customTree1.Hierarcy = null;
+            //customTree1.Hierarcy = null;
             customTree1.Location = new Point(615, 50);
             customTree1.Name = "customTree1";
             customTree1.Size = new Size(309, 384);

KOP_Labs/WinFormForTest/Form1.cs

@@ -28,10 +28,11 @@ namespace WinFormForTest
 
         public void LoadTree()
         {
-            customTree1.Hierarcy = new List<string> { "Type", "Name", "Color" };
+             var hierarcy= new List<string> { "Type", "Name", "Color" };
+            customTree1.SetHierarcy(hierarcy);
             foreach (Plant plant in plants)
             {
-                customTree1.AddNode(plant);
+                customTree1.AddObjectToTree(plant);
             }
         }
         private void buttonClear_Click(object sender, EventArgs e)