添加项目文件。

Wpf.Ui.Extend/Models/TreeModel.cs

@@ -0,0 +1,178 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Wpf.Ui.Extend.Models;
+
+
+public partial class TreeModel : ObservableObject, IComparable
+{
+    /// <summary>
+    ///     构造
+    /// </summary>
+    public TreeModel()
+    {
+        Children = new ObservableCollection<TreeModel>();
+        isChecked = false;
+        Icon = "./Resources/File_16px.png";
+        //TitleIcon = FamilyPlugins.Properties.Resources.Folder_32px;
+        IsExpanded = false;
+    }
+
+    /// <summary>
+    ///     选中状态
+    /// </summary>
+    [ObservableProperty]
+    private bool? isChecked;
+
+    /// <summary>
+    ///     折叠状态
+    /// </summary>
+    [ObservableProperty]
+    private bool isExpanded;
+
+    /// <summary>
+    ///     指针悬停时的显示说明
+    /// </summary>
+    public string ToolTip
+    {
+        get
+        {
+            return Parent == null ? $"{Name}" : $"{Parent.Name}-{Name}";
+            //return String.Format(Name);
+        }
+    }
+
+    /// <summary>
+    ///     子项
+    /// </summary>
+    public IList<TreeModel> Children { get; set; }
+
+    public object Tag { get; set; }
+
+    /// <summary>
+    ///     键值
+    /// </summary>
+    public string Id { get; set; }
+
+    /// <summary>
+    ///     显示的字符
+    /// </summary>
+    public string Name { get; set; }
+
+    /// <summary>
+    ///     图标
+    /// </summary>
+    public string Icon { get; set; }
+
+    /// <summary>
+    ///     父项
+    /// </summary>
+    public TreeModel Parent { get; set; }
+
+    /// <summary>
+    ///     排序
+    /// </summary>
+    /// <param name="obj"></param>
+    /// <returns></returns>
+    public int CompareTo(object obj)
+    {
+        var treeModel = (TreeModel)obj;
+
+        int result;
+        if (Name == treeModel.Name)
+        {
+            result = 0;
+        }
+        else
+        {
+            result = Name.CompareTo(treeModel.Name) > 0 ? 1 : -1;
+        }
+
+        return result;
+    }
+
+    /// <summary>
+    ///     设置所有子项的选中状态
+    /// </summary>
+    public void SetChildrenChecked()
+    {
+        if (Children != null && Children.Count > 0 && IsChecked != null)
+        {
+            foreach (var child in Children)
+            {
+                child.IsChecked = IsChecked;
+                if (child.Children != null && Children.Count > 0)
+                {
+                    child.SetChildrenChecked();
+                }
+            }
+        }
+    }
+
+    /// <summary>
+    ///     设置所有子项的选中状态
+    /// </summary>
+    /// <param name="isCheck"></param>
+    public void SetChildrenChecked(bool isCheck)
+    {
+        if (Children != null && Children.Count > 0)
+        {
+            foreach (var child in Children)
+            {
+                child.IsChecked = isCheck;
+                if (child.Children != null && Children.Count > 0)
+                {
+                    child.SetChildrenChecked(isCheck);
+                }
+            }
+        }
+    }
+
+    /// <summary>
+    ///     设置所有子项展开状态
+    /// </summary>
+    /// <param name="isExpanded"></param>
+    public void SetChildrenExpanded(bool isExpanded)
+    {
+        foreach (var child in Children)
+        {
+            child.IsExpanded = isExpanded;
+            child.SetChildrenExpanded(isExpanded);
+        }
+    }
+
+    /// <summary>
+    ///     使父节点处于选中状态
+    /// </summary>
+    public void SetParentChecked()
+    {
+        if (Parent != null)
+        {
+            if (Parent.Children.Count(c => c.IsChecked == null) > 0)
+            {
+                Parent.IsChecked = null;
+            }
+            else if (Parent.Children.Count(c => c.IsChecked == true) == 0)
+            {
+                Parent.IsChecked = false;
+            }
+            else if (Parent.Children.Count(c => c.IsChecked == true) == Parent.Children.Count)
+            {
+                Parent.IsChecked = true;
+            }
+            else if (Parent.Children.Count(c => c.IsChecked == true) < Parent.Children.Count)
+            {
+                Parent.IsChecked = null;
+            }
+
+            if (Parent.Parent != null)
+            {
+                Parent.SetParentChecked();
+            }
+        }
+    }
+}