92 lines
3.0 KiB
C#
92 lines
3.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using static System.Windows.Forms.VisualStyles.VisualStyleElement;
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namespace ChubykinaComponents.Components
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{
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public partial class UserTreeView : UserControl
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{
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public UserTreeView()
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{
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InitializeComponent();
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}
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private List<(string, bool)> hierarchy = new List<(string, bool)>();
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public int SelectedNodeIndex
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{
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get
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{
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return treeView.SelectedNode?.Index ?? -1;
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}
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set
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{
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if (treeView.SelectedNode == null) treeView.SelectedNode = value >= 0 && value < treeView.Nodes.Count ? treeView.Nodes[value] : treeView.SelectedNode;
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else treeView.SelectedNode = value >= 0 && value < treeView.SelectedNode.Nodes.Count ? treeView.SelectedNode.Nodes[value] : treeView.SelectedNode;
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}
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}
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public T? getSelecetedNodeValue<T>()
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{
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if (treeView.SelectedNode == null || treeView.SelectedNode.Nodes.Count > 0) return default(T);
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TreeNode? node = treeView.SelectedNode;
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var type = typeof(T);
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var fields = type.GetFields();
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var item = Activator.CreateInstance(type);
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while (node != null)
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{
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var field = fields.FirstOrDefault(x => x.Name == node.Name);
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if (field != null)
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{
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field.SetValue(item, node.Text);
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}
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node = node.Parent;
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}
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return item != null ? (T)item : default(T);
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}
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public void setHierarchy(List<(string, bool)> fields)
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{
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hierarchy = fields;
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}
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public void addItems<T>(List<T> items)
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{
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var type = typeof(T);
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var fields = type.GetFields();
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foreach (T item in items)
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{
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TreeNodeCollection nodes = treeView.Nodes;
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for (int i = 0; i < hierarchy.Count; i++)
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{
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var field = fields.FirstOrDefault(x => x.Name.Equals(hierarchy[i].Item1));
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if (field is not null)
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{
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var node = nodes.Find(field.Name, false).FirstOrDefault(x => x.Text == field.GetValue(item).ToString());
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if (node is not null && !hierarchy[i].Item2)
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{
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nodes = node.Nodes;
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}
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else
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{
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TreeNode newNode = nodes.Add(field.Name, field.GetValue(item).ToString());
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nodes = newNode.Nodes;
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}
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}
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}
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}
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}
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public void clear()
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{
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treeView.Nodes.Clear();
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}
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}
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} |