misc: transfer TreeDataGrid demo.

Semi.Avalonia.sln

@@ -39,8 +39,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Semi.Avalonia.Demo.Drm", "d
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Semi.Avalonia.TreeDataGrid", "src\Semi.Avalonia.TreeDataGrid\Semi.Avalonia.TreeDataGrid.csproj", "{398D2998-0835-41F5-99A3-608CAB8051E2}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Semi.Avalonia.TreeDataGrid.Demo", "demo\Semi.Avalonia.TreeDataGrid.Demo\Semi.Avalonia.TreeDataGrid.Demo.csproj", "{6178B545-4BB6-458C-A27C-EE11F3885D38}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -84,10 +82,6 @@ Global
 		{398D2998-0835-41F5-99A3-608CAB8051E2}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{398D2998-0835-41F5-99A3-608CAB8051E2}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{398D2998-0835-41F5-99A3-608CAB8051E2}.Release|Any CPU.Build.0 = Release|Any CPU
-		{6178B545-4BB6-458C-A27C-EE11F3885D38}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{6178B545-4BB6-458C-A27C-EE11F3885D38}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{6178B545-4BB6-458C-A27C-EE11F3885D38}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{6178B545-4BB6-458C-A27C-EE11F3885D38}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -98,7 +92,6 @@ Global
 		{D789AEDB-EBDF-4450-8E8E-B4A03FB257B0} = {43091528-9509-43CB-A003-9C5C11E96DD6}
 		{0C81FC1C-5D2D-478A-9876-923A0C85EC2F} = {43091528-9509-43CB-A003-9C5C11E96DD6}
 		{86D93406-412A-4429-93B2-92AAD0407784} = {43091528-9509-43CB-A003-9C5C11E96DD6}
-		{6178B545-4BB6-458C-A27C-EE11F3885D38} = {43091528-9509-43CB-A003-9C5C11E96DD6}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {7CA41ED3-2CED-40CC-AA21-28C3B42B1E86}

demo/Semi.Avalonia.Demo/App.axaml

@@ -13,6 +13,7 @@
         <semi:SemiPopupAnimations />
         <StyleInclude Source="avares://Semi.Avalonia.DataGrid/Index.axaml" />
         <StyleInclude Source="avares://Semi.Avalonia.ColorPicker/Index.axaml" />
+        <StyleInclude Source="avares://Semi.Avalonia.TreeDataGrid/Index.axaml" />
     </Application.Styles>
     <Application.Resources>
         <ResourceDictionary>

demo/Semi.Avalonia.Demo/Converters/FileIconConverter.cs

@@ -5,7 +5,7 @@ using Avalonia;
 using Avalonia.Data.Converters;
 using Avalonia.Metadata;
 
-namespace Semi.Avalonia.TreeDataGrid.Demo.Converters;
+namespace Semi.Avalonia.Demo.Converters;
 
 public class FileIconConverter : IMultiValueConverter
 {

demo/Semi.Avalonia.Demo/Pages/TreeDataGridDemo.axaml

@@ -0,0 +1,127 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:vm="clr-namespace:Semi.Avalonia.Demo.ViewModels"
+             xmlns:converters="clr-namespace:Semi.Avalonia.Demo.Converters"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="Semi.Avalonia.Demo.Pages.TreeDataGridDemo"
+             x:CompileBindings="True"
+             x:DataType="vm:TreeDataGridDemoViewModel">
+    <UserControl.Resources>
+        <converters:FileIconConverter x:Key="FileIconConverter">
+            <StaticResource x:Key="file" ResourceKey="SemiIconFile" />
+            <StaticResource x:Key="folderOpen" ResourceKey="SemiIconFolderOpen" />
+            <StaticResource x:Key="folderClosed" ResourceKey="SemiIconFolder" />
+        </converters:FileIconConverter>
+    </UserControl.Resources>
+    <TabControl>
+        <TabItem Header="Songs">
+            <TreeDataGrid
+                AutoDragDropRows="True"
+                DataContext="{Binding SongsContext}"
+                Source="{Binding Songs}">
+                <TreeDataGrid.Resources>
+                    <DataTemplate x:Key="AlbumCell" DataType="vm:SongViewModel">
+                        <TextBlock
+                            HorizontalAlignment="Stretch"
+                            VerticalAlignment="Center"
+                            Background="Transparent"
+                            Text="{Binding Album}" />
+                    </DataTemplate>
+                    <DataTemplate x:Key="AlbumEditCell" DataType="vm:SongViewModel">
+                        <ComboBox
+                            VerticalAlignment="Center"
+                            Classes="Small"
+                            ItemsSource="{x:Static vm:Song.Albums}"
+                            SelectedItem="{Binding Album}" />
+                    </DataTemplate>
+                    <DataTemplate x:Key="CommentsCell" DataType="vm:SongViewModel">
+                        <TextBlock VerticalAlignment="Center" Text="{Binding CountOfComment}" />
+                    </DataTemplate>
+                    <DataTemplate x:Key="CommentsEditCell" DataType="vm:SongViewModel">
+                        <NumericUpDown
+                            Width="100"
+                            HorizontalAlignment="Left"
+                            VerticalAlignment="Center"
+                            Classes="Small"
+                            Value="{Binding CountOfComment}" />
+                    </DataTemplate>
+                </TreeDataGrid.Resources>
+                <TreeDataGrid.Styles>
+                    <Style Selector="TreeDataGrid TreeDataGridRow:nth-last-child(2n)">
+                        <Setter Property="Background" Value="{DynamicResource SemiColorFill0}" />
+                    </Style>
+                </TreeDataGrid.Styles>
+            </TreeDataGrid>
+        </TabItem>
+        <TabItem Header="Files">
+            <Grid DataContext="{Binding FilesContext}" RowDefinitions="Auto, *">
+                <DockPanel Margin="0,4" DockPanel.Dock="Top">
+                    <ComboBox
+                        DockPanel.Dock="Left"
+                        ItemsSource="{Binding Drives}"
+                        SelectedItem="{Binding SelectedDrive}" />
+                    <TextBox
+                        Margin="4,0,0,0"
+                        VerticalContentAlignment="Center"
+                        KeyDown="SelectedPath_KeyDown"
+                        Text="{Binding SelectedPath, Mode=OneWay}" />
+                </DockPanel>
+                <TreeDataGrid
+                    Name="fileViewer"
+                    Grid.Row="1"
+                    Source="{Binding Source}">
+                    <TreeDataGrid.Resources>
+
+                        <!--  Template for Name column cells  -->
+                        <DataTemplate x:Key="FileNameCell" DataType="vm:FileNodeViewModel">
+                            <StackPanel Orientation="Horizontal">
+                                <PathIcon
+                                    Theme="{StaticResource InnerPathIcon}"
+                                    Margin="8,0">
+                                    <PathIcon.Data>
+                                        <MultiBinding Converter="{StaticResource FileIconConverter}">
+                                            <Binding Path="IsDirectory" />
+                                            <Binding Path="IsExpanded" />
+                                        </MultiBinding>
+                                    </PathIcon.Data>
+                                </PathIcon>
+                                <TextBlock VerticalAlignment="Center" Text="{Binding Name}" />
+                            </StackPanel>
+                        </DataTemplate>
+
+                        <!--  Edit template for Name column cells  -->
+                        <DataTemplate x:Key="FileNameEditCell" DataType="vm:FileNodeViewModel">
+                            <StackPanel Orientation="Horizontal">
+                                <Image Margin="0,0,4,0" VerticalAlignment="Center">
+                                    <Image.Source>
+                                        <MultiBinding Converter="{StaticResource FileIconConverter}">
+                                            <Binding Path="IsDirectory" />
+                                            <Binding Path="IsExpanded" />
+                                        </MultiBinding>
+                                    </Image.Source>
+                                </Image>
+                                <TextBox
+                                    VerticalAlignment="Center"
+                                    Classes="Small"
+                                    Text="{Binding Name}">
+                                    <TextBox.Styles>
+                                        <Style Selector="DataValidationErrors">
+                                            <Setter Property="Theme" Value="{DynamicResource TooltipDataValidationErrors}" />
+                                        </Style>
+                                    </TextBox.Styles>
+                                </TextBox>
+                            </StackPanel>
+                        </DataTemplate>
+                    </TreeDataGrid.Resources>
+                    <TreeDataGrid.Styles>
+                        <Style Selector="TreeDataGrid TreeDataGridRow:nth-child(2n)">
+                            <Setter Property="Background" Value="{DynamicResource SemiColorFill0}" />
+                        </Style>
+                    </TreeDataGrid.Styles>
+                </TreeDataGrid>
+            </Grid>
+        </TabItem>
+    </TabControl>
+</UserControl>

demo/Semi.Avalonia.Demo/Pages/TreeDataGridDemo.axaml.cs

@@ -0,0 +1,23 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using Semi.Avalonia.Demo.ViewModels;
+
+namespace Semi.Avalonia.Demo.Pages;
+
+public partial class TreeDataGridDemo : UserControl
+{
+    public TreeDataGridDemo()
+    {
+        InitializeComponent();
+        this.DataContext = new TreeDataGridDemoViewModel();
+    }
+
+    private void SelectedPath_KeyDown(object? sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Enter)
+        {
+            var vm = DataContext as TreeDataGridDemoViewModel;
+            vm.FilesContext.SelectedPath = (sender as TextBox)!.Text;
+        }
+    }
+}

demo/Semi.Avalonia.Demo/Semi.Avalonia.Demo.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>netstandard2.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <Nullable>enable</Nullable>
         <LangVersion>latest</LangVersion>
     </PropertyGroup>
@@ -25,5 +25,6 @@
         <ProjectReference Include="..\..\src\Semi.Avalonia\Semi.Avalonia.csproj"/>
         <ProjectReference Include="..\..\src\Semi.Avalonia.ColorPicker\Semi.Avalonia.ColorPicker.csproj"/>
         <ProjectReference Include="..\..\src\Semi.Avalonia.DataGrid\Semi.Avalonia.DataGrid.csproj"/>
+        <ProjectReference Include="..\..\src\Semi.Avalonia.TreeDataGrid\Semi.Avalonia.TreeDataGrid.csproj"/>
     </ItemGroup>
 </Project>

demo/Semi.Avalonia.Demo/ViewModels/DataGridDemoViewModel.cs

@@ -59,6 +59,25 @@ public class Song
         Url = $"https://music.163.com/song?id={netEaseId}";
     }
 
+    public static List<string> Albums =>
+    [
+        "A.S.I.A",
+        "饕餮人间",
+        "七步咙咚呛",
+        "大惊小怪",
+        "The ONE",
+        "以梦为马 (壮志骄阳版)",
+        "emo了",
+        "一眼万年",
+        "冲刺吧",
+        "爱的赏味期限",
+        "COSMIC ANTHEM / 手紙",
+        "世界晚安",
+        "明年也要好好长大",
+        "320万年前",
+        "W.O.R.L.D."
+    ];
+
     public static List<Song> Songs =>
     [
         new("好肚有肚(feat.李玲玉)", "熊猫堂ProducePandas", 2, 50, "A.S.I.A", 730, 1487039339),

demo/Semi.Avalonia.Demo/ViewModels/TreeDataGridDemo/FilesPageViewModel.cs

@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
+using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
@@ -11,43 +12,35 @@ using Avalonia.Controls.Selection;
 using Avalonia.Threading;
 using CommunityToolkit.Mvvm.ComponentModel;
 
-namespace Semi.Avalonia.TreeDataGrid.Demo.ViewModels;
+namespace Semi.Avalonia.Demo.ViewModels;
 
-public class FilesPageViewModel: ObservableObject
+public partial class FilesPageViewModel : ObservableObject
 {
     public IList<string> Drives { get; }
-    private string _selectedDrive;
+    public HierarchicalTreeDataGridSource<FileNodeViewModel> Source { get; }
-    private string? _selectedPath;
+    [ObservableProperty] private string _selectedDrive;
-    private FileNodeViewModel? _root;
+    [ObservableProperty] private string? _selectedPath;
-    public string SelectedDrive
+    [ObservableProperty] private FileNodeViewModel? _root;
+
+    partial void OnSelectedDriveChanged(string value)
     {
-        get => _selectedDrive;
+        Root = new FileNodeViewModel(value, true, true);
-        set
+        if (Source is not null)
         {
-            SetProperty(ref _selectedDrive, value);
+            Source.Items = [Root];
-            _root = new FileNodeViewModel(_selectedDrive, isDirectory: true, isRoot: true);
-            Source.Items = new[] { _root };
         }
     }
 
-    public string? SelectedPath
-    {
-        get => _selectedPath;
-        set => SetSelectedPath(value);
-    }
-    
-    public HierarchicalTreeDataGridSource<FileNodeViewModel> Source { get; }
-
     public FilesPageViewModel()
     {
-        Drives= DriveInfo.GetDrives().Select(x => x.Name).ToList();
+        Drives = DriveInfo.GetDrives().Select(x => x.Name).ToList();
         if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
         {
-            _selectedDrive = "C:\\";
+            SelectedDrive = @"C:\";
         }
         else
         {
-            _selectedDrive = Drives.FirstOrDefault() ?? "/";
+            SelectedDrive = Drives.FirstOrDefault() ?? "/";
         }
 
         Source = new HierarchicalTreeDataGridSource<FileNodeViewModel>(Array.Empty<FileNodeViewModel>())
@@ -58,7 +51,7 @@ public class FilesPageViewModel: ObservableObject
                     null,
                     x => x.IsChecked,
                     (o, v) => o.IsChecked = v,
-                    options: new()
+                    options: new CheckBoxColumnOptions<FileNodeViewModel>
                     {
                         CanUserResizeColumn = false,
                     }),
@@ -68,20 +61,20 @@ public class FilesPageViewModel: ObservableObject
                         "FileNameCell",
                         "FileNameEditCell",
                         new GridLength(1, GridUnitType.Star),
-                        new()
+                        new TemplateColumnOptions<FileNodeViewModel>
                         {
-                            CompareAscending = FileNodeViewModel.SortAscending(x => x.Name),
+                            CompareAscending = FileNodeViewModel.SortAscending(vm => vm.Name),
-                            CompareDescending = FileNodeViewModel.SortDescending(x => x.Name),
+                            CompareDescending = FileNodeViewModel.SortDescending(vm => vm.Name),
                             IsTextSearchEnabled = true,
-                            TextSearchValueSelector = x => x.Name
+                            TextSearchValueSelector = vm => vm.Name
                         }),
-                    x => x.Children,
+                    vm => vm.Children,
-                    x => x.HasChildren,
+                    vm => vm.HasChildren,
-                    x => x.IsExpanded),
+                    vm => vm.IsExpanded),
                 new TextColumn<FileNodeViewModel, long?>(
                     "Size",
-                    x => x.Size,
+                    vm => vm.Size,
-                    options: new()
+                    options: new TextColumnOptions<FileNodeViewModel>
                     {
                         CompareAscending = FileNodeViewModel.SortAscending(x => x.Size),
                         CompareDescending = FileNodeViewModel.SortDescending(x => x.Size),
@@ -89,7 +82,7 @@ public class FilesPageViewModel: ObservableObject
                 new TextColumn<FileNodeViewModel, DateTimeOffset?>(
                     "Modified",
                     x => x.Modified,
-                    options: new()
+                    options: new TextColumnOptions<FileNodeViewModel>
                     {
                         CompareAscending = FileNodeViewModel.SortAscending(x => x.Modified),
                         CompareDescending = FileNodeViewModel.SortDescending(x => x.Modified),
@@ -106,9 +99,9 @@ public class FilesPageViewModel: ObservableObject
         this.SetProperty(ref _selectedPath, selectedPath, nameof(SelectedPath));
 
         foreach (var i in e.DeselectedItems)
-            System.Diagnostics.Trace.WriteLine($"Deselected '{i?.Path}'");
+            Trace.WriteLine($"Deselected '{i?.Path}'");
         foreach (var i in e.SelectedItems)
-            System.Diagnostics.Trace.WriteLine($"Selected '{i?.Path}'");
+            Trace.WriteLine($"Selected '{i?.Path}'");
     }
 
     private void SetSelectedPath(string? value)
@@ -168,23 +161,23 @@ public class FilesPageViewModel: ObservableObject
     }
 }
 
-public class FileNodeViewModel: ObservableObject, IEditableObject
+public partial class FileNodeViewModel : ObservableObject, IEditableObject
 {
-    private string _path;
+    [ObservableProperty] private string _path;
-    private string _name;
+    [ObservableProperty] private string _name;
     private string? _undoName;
-    private long? _size;
+    [ObservableProperty] private long? _size;
-    private DateTimeOffset? _modified;
+    [ObservableProperty] private DateTimeOffset? _modified;
     private FileSystemWatcher? _watcher;
     private ObservableCollection<FileNodeViewModel>? _children;
-    private bool _hasChildren = true;
+    [ObservableProperty] private bool _hasChildren = true;
-    private bool _isExpanded;
+    [ObservableProperty] private bool _isExpanded;
 
-    public FileNodeViewModel( string path, bool isDirectory, bool isRoot = false)
+    public FileNodeViewModel(string path, bool isDirectory, bool isRoot = false)
     {
-        _path = path;
+        Path = path;
-        _name = isRoot ? path : System.IO.Path.GetFileName(Path);
+        Name = isRoot ? path : System.IO.Path.GetFileName(Path);
-        _isExpanded = isRoot;
+        IsExpanded = isRoot;
         IsDirectory = isDirectory;
         HasChildren = isDirectory;
 
@@ -196,42 +189,6 @@ public class FileNodeViewModel: ObservableObject, IEditableObject
         }
     }
 
-    public string Path 
-    {
-        get => _path;
-        private set => SetProperty(ref _path, value);
-    }
-
-    public string Name 
-    {
-        get => _name;
-        private set => SetProperty(ref _name, value);
-    }
-
-    public long? Size 
-    {
-        get => _size;
-        private set => SetProperty(ref _size, value);
-    }
-
-    public DateTimeOffset? Modified 
-    {
-        get => _modified;
-        private set => SetProperty(ref _modified, value);
-    }
-
-    public bool HasChildren
-    {
-        get => _hasChildren;
-        private set => SetProperty(ref _hasChildren, value);
-    }
-
-    public bool IsExpanded
-    {
-        get => _isExpanded;
-        set => SetProperty(ref _isExpanded, value);
-    }
-
     public bool IsChecked { get; set; }
     public bool IsDirectory { get; }
     public IReadOnlyList<FileNodeViewModel> Children => _children ??= LoadChildren();
@@ -332,6 +289,7 @@ public class FileNodeViewModel: ObservableObject, IEditableObject
                             child.Size = info.Length;
                             child.Modified = info.LastWriteTimeUtc;
                         }
+
                         break;
                     }
                 }
@@ -359,7 +317,7 @@ public class FileNodeViewModel: ObservableObject, IEditableObject
                 if (_children[i].Path == e.FullPath)
                 {
                     _children.RemoveAt(i);
-                    System.Diagnostics.Debug.WriteLine($"Removed {e.FullPath}");
+                    Debug.WriteLine($"Removed {e.FullPath}");
                     break;
                 }
             }
@@ -394,6 +352,7 @@ internal static class ListExtensions
                 return i;
             i++;
         }
+
         return -1;
     }
 }

demo/Semi.Avalonia.Demo/ViewModels/TreeDataGridDemo/SongsPageViewModel.cs

@@ -0,0 +1,54 @@
+using System.Collections.ObjectModel;
+using System.Linq;
+using Avalonia.Controls;
+using Avalonia.Controls.Models.TreeDataGrid;
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Semi.Avalonia.Demo.ViewModels;
+
+public class SongsPageViewModel : ObservableObject
+{
+    public FlatTreeDataGridSource<SongViewModel> Songs { get; }
+
+    public SongsPageViewModel()
+    {
+        var songs = new ObservableCollection<SongViewModel>(Song.Songs.Select(a => new SongViewModel()
+        {
+            Title = a.Title,
+            Artist = a.Artist,
+            Album = a.Album,
+            CountOfComment = a.CountOfComment,
+            IsSelected = false
+        }));
+
+        Songs = new FlatTreeDataGridSource<SongViewModel>(songs)
+        {
+            Columns =
+            {
+                new CheckBoxColumn<SongViewModel>(
+                    "IsSelected",
+                    a => a.IsSelected, 
+                    (model, b) => { model.IsSelected = b; },
+                    new GridLength(108, GridUnitType.Pixel)),
+                new TextColumn<SongViewModel, string>(
+                    "Title", 
+                    a => a.Title, 
+                    (o, a) => o.Title = a,
+                    new GridLength(6, GridUnitType.Star)),
+                new TextColumn<SongViewModel, string>("Artist", 
+                    a => a.Artist, 
+                    (o, a) => o.Artist = a,
+                    new GridLength(6, GridUnitType.Star)),
+                new TemplateColumn<SongViewModel>("Album", 
+                    "AlbumCell", 
+                    "AlbumEditCell",
+                    new GridLength(6, GridUnitType.Star)),
+                new TemplateColumn<SongViewModel>(
+                    "Comments", 
+                    "CommentsCell", 
+                    "CommentsEditCell",
+                    new GridLength(6, GridUnitType.Star)),
+            }
+        };
+    }
+}

demo/Semi.Avalonia.Demo/ViewModels/TreeDataGridDemo/TreeDataGridDemoViewModel.cs

@@ -1,8 +1,8 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 
-namespace Semi.Avalonia.TreeDataGrid.Demo.ViewModels;
+namespace Semi.Avalonia.Demo.ViewModels;
 
-public class MainViewModel: ObservableObject
+public class TreeDataGridDemoViewModel: ObservableObject
 {
     public SongsPageViewModel SongsContext { get; } = new();
     public FilesPageViewModel FilesContext { get; } = new();

demo/Semi.Avalonia.Demo/Views/MainView.axaml

@@ -135,6 +135,9 @@
             <TabItem Header="DataGrid">
                 <pages:DataGridDemo />
             </TabItem>
+            <TabItem Header="TreeDataGrid">
+                <pages:TreeDataGridDemo />
+            </TabItem>
             <TabItem
                 Theme="{DynamicResource CategoryTabItem}"
                 Header="Basic" />

demo/Semi.Avalonia.TreeDataGrid.Demo/App.axaml

@@ -1,11 +0,0 @@
-<Application
-    x:Class="Semi.Avalonia.TreeDataGrid.Demo.App"
-    xmlns="https://github.com/avaloniaui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:semi="https://irihi.tech/semi">
-
-    <Application.Styles>
-        <semi:SemiTheme Locale="zh-CN" />
-        <StyleInclude Source="avares://Semi.Avalonia.TreeDataGrid/Index.axaml" />
-    </Application.Styles>
-</Application>

demo/Semi.Avalonia.TreeDataGrid.Demo/App.axaml.cs

@@ -1,23 +0,0 @@
-using Avalonia;
-using Avalonia.Controls.ApplicationLifetimes;
-using Avalonia.Markup.Xaml;
-
-namespace Semi.Avalonia.TreeDataGrid.Demo;
-
-public partial class App : Application
-{
-    public override void Initialize()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
-
-    public override void OnFrameworkInitializationCompleted()
-    {
-        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
-        {
-            desktop.MainWindow = new MainWindow();
-        }
-
-        base.OnFrameworkInitializationCompleted();
-    }
-}

demo/Semi.Avalonia.TreeDataGrid.Demo/MainWindow.axaml

@@ -1,136 +0,0 @@
-<Window
-    x:Class="Semi.Avalonia.TreeDataGrid.Demo.MainWindow"
-    xmlns="https://github.com/avaloniaui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:converters="clr-namespace:Semi.Avalonia.TreeDataGrid.Demo.Converters"
-    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    xmlns:vm="clr-namespace:Semi.Avalonia.TreeDataGrid.Demo.ViewModels;assembly=Semi.Avalonia.TreeDataGrid.Demo"
-    Title="Semi.Avalonia.TreeDataGrid.Demo"
-    d:DesignHeight="450"
-    d:DesignWidth="800"
-    x:DataType="vm:MainViewModel"
-    mc:Ignorable="d">
-    <Window.Resources>
-        <converters:FileIconConverter x:Key="FileIconConverter">
-            <StaticResource x:Key="file" ResourceKey="SemiIconFile" />
-            <StaticResource x:Key="folderOpen" ResourceKey="SemiIconFolderOpen" />
-            <StaticResource x:Key="folderClosed" ResourceKey="SemiIconFolder" />
-        </converters:FileIconConverter>
-    </Window.Resources>
-    <Grid RowDefinitions="Auto, *">
-        <Button
-            HorizontalAlignment="Right"
-            Click="Button_OnClick"
-            Content="Theme" />
-        <TabControl Grid.Row="1">
-            <TabItem Header="Songs">
-                <TreeDataGrid
-                    AutoDragDropRows="True"
-                    DataContext="{Binding SongsContext}"
-                    Source="{Binding Songs}">
-                    <TreeDataGrid.Resources>
-                        <DataTemplate x:Key="AlbumCell" DataType="vm:SongViewModel">
-                            <TextBlock
-                                HorizontalAlignment="Stretch"
-                                VerticalAlignment="Center"
-                                Background="Transparent"
-                                Text="{Binding Album}" />
-                        </DataTemplate>
-                        <DataTemplate x:Key="AlbumEditCell" DataType="vm:SongViewModel">
-                            <ComboBox
-                                VerticalAlignment="Center"
-                                Classes="Small"
-                                ItemsSource="{x:Static vm:Song.Albums}"
-                                SelectedItem="{Binding Album}" />
-                        </DataTemplate>
-                        <DataTemplate x:Key="CommentsCell" DataType="vm:SongViewModel">
-                            <TextBlock VerticalAlignment="Center" Text="{Binding CountOfComment}" />
-                        </DataTemplate>
-                        <DataTemplate x:Key="CommentsEditCell" DataType="vm:SongViewModel">
-                            <NumericUpDown
-                                Width="100"
-                                HorizontalAlignment="Left"
-                                VerticalAlignment="Center"
-                                Classes="Small"
-                                Value="{Binding CountOfComment}" />
-                        </DataTemplate>
-                    </TreeDataGrid.Resources>
-                    <TreeDataGrid.Styles>
-                        <Style Selector="TreeDataGrid TreeDataGridRow:nth-last-child(2n)">
-                            <Setter Property="Background" Value="{DynamicResource SemiColorFill0}" />
-                        </Style>
-                    </TreeDataGrid.Styles>
-                </TreeDataGrid>
-            </TabItem>
-            <TabItem Header="Files">
-                <Grid DataContext="{Binding FilesContext}" RowDefinitions="Auto, *">
-                    <DockPanel Margin="0,4" DockPanel.Dock="Top">
-                        <ComboBox
-                            DockPanel.Dock="Left"
-                            ItemsSource="{Binding Drives}"
-                            SelectedItem="{Binding SelectedDrive}" />
-                        <TextBox
-                            Margin="4,0,0,0"
-                            VerticalContentAlignment="Center"
-                            KeyDown="SelectedPath_KeyDown"
-                            Text="{Binding SelectedPath, Mode=OneWay}" />
-                    </DockPanel>
-                    <TreeDataGrid
-                        Name="fileViewer"
-                        Grid.Row="1"
-                        Source="{Binding Source}">
-                        <TreeDataGrid.Resources>
-
-                            <!--  Template for Name column cells  -->
-                            <DataTemplate x:Key="FileNameCell" DataType="vm:FileNodeViewModel">
-                                <StackPanel Orientation="Horizontal">
-                                    <PathIcon
-                                        Theme="{StaticResource InnerPathIcon}"
-                                        Margin="8,0">
-                                        <PathIcon.Data>
-                                            <MultiBinding Converter="{StaticResource FileIconConverter}">
-                                                <Binding Path="IsDirectory" />
-                                                <Binding Path="IsExpanded" />
-                                            </MultiBinding>
-                                        </PathIcon.Data>
-                                    </PathIcon>
-                                    <TextBlock VerticalAlignment="Center" Text="{Binding Name}" />
-                                </StackPanel>
-                            </DataTemplate>
-
-                            <!--  Edit template for Name column cells  -->
-                            <DataTemplate x:Key="FileNameEditCell" DataType="vm:FileNodeViewModel">
-                                <StackPanel Orientation="Horizontal">
-                                    <Image Margin="0,0,4,0" VerticalAlignment="Center">
-                                        <Image.Source>
-                                            <MultiBinding Converter="{StaticResource FileIconConverter}">
-                                                <Binding Path="IsDirectory" />
-                                                <Binding Path="IsExpanded" />
-                                            </MultiBinding>
-                                        </Image.Source>
-                                    </Image>
-                                    <TextBox
-                                        VerticalAlignment="Center"
-                                        Classes="Small"
-                                        Text="{Binding Name}">
-                                        <TextBox.Styles>
-                                            <Style Selector="DataValidationErrors">
-                                                <Setter Property="Theme" Value="{DynamicResource TooltipDataValidationErrors}" />
-                                            </Style>
-                                        </TextBox.Styles>
-                                    </TextBox>
-                                </StackPanel>
-                            </DataTemplate>
-                        </TreeDataGrid.Resources>
-                        <TreeDataGrid.Styles>
-                            <Style Selector="TreeDataGrid TreeDataGridRow:nth-child(2n)">
-                                <Setter Property="Background" Value="{DynamicResource SemiColorFill0}" />
-                            </Style>
-                        </TreeDataGrid.Styles>
-                    </TreeDataGrid>
-                </Grid>
-            </TabItem>
-        </TabControl>
-    </Grid>
-</Window>

demo/Semi.Avalonia.TreeDataGrid.Demo/MainWindow.axaml.cs

@@ -1,36 +0,0 @@
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Input;
-using Avalonia.Interactivity;
-using Avalonia.Styling;
-using Semi.Avalonia.TreeDataGrid.Demo.ViewModels;
-
-namespace Semi.Avalonia.TreeDataGrid.Demo;
-
-public partial class MainWindow : Window
-{
-    public MainWindow()
-    {
-        InitializeComponent();
-        this.DataContext = new MainViewModel();
-    }
-
-    private void Button_OnClick(object? sender, RoutedEventArgs e)
-    {
-        var app = Application.Current;
-        if (app is not null)
-        {
-            var theme = app.ActualThemeVariant;
-            app.RequestedThemeVariant = theme == ThemeVariant.Dark ? ThemeVariant.Light : ThemeVariant.Dark;
-        }
-    }
-    
-    private void SelectedPath_KeyDown(object? sender, KeyEventArgs e)
-    {
-        if (e.Key == Key.Enter)
-        {
-            var vm = (MainViewModel)DataContext!;
-            vm.FilesContext.SelectedPath = ((TextBox)sender!).Text;
-        }
-    }
-}

demo/Semi.Avalonia.TreeDataGrid.Demo/Program.cs

@@ -1,31 +0,0 @@
-using System;
-using Avalonia;
-using Avalonia.Media;
-
-namespace Semi.Avalonia.TreeDataGrid.Demo;
-
-sealed class Program
-{
-    // Initialization code. Don't use any Avalonia, third-party APIs or any
-    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
-    // yet and stuff might break.
-    [STAThread]
-    public static void Main(string[] args) => BuildAvaloniaApp()
-        .With(new FontManagerOptions
-        {
-            FontFallbacks =
-            [
-                new FontFallback
-                {
-                    FontFamily = new FontFamily("Microsoft YaHei")
-                }
-            ]
-        })
-        .StartWithClassicDesktopLifetime(args);
-
-    // Avalonia configuration, don't remove; also used by visual designer.
-    public static AppBuilder BuildAvaloniaApp()
-        => AppBuilder.Configure<App>()
-            .UsePlatformDetect()
-            .LogToTrace();
-}

demo/Semi.Avalonia.TreeDataGrid.Demo/Semi.Avalonia.TreeDataGrid.Demo.csproj

@@ -1,32 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-    <PropertyGroup>
-        <OutputType>WinExe</OutputType>
-        <TargetFramework>net8.0</TargetFramework>
-        <Nullable>enable</Nullable>
-        <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
-        <LangVersion>latest</LangVersion>
-        <ApplicationManifest>app.manifest</ApplicationManifest>
-        <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
-        <!-- Uncomment below to enable Native AOT compilation-->
-        <!--<PublishAot>true</PublishAot>-->
-        <!--<IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>-->
-    </PropertyGroup>
-
-    <Import Project="../Directory.Build.props"/>
-
-    <ItemGroup>
-        <PackageReference Include="Avalonia" Version="$(AvaloniaVersion)"/>
-        <PackageReference Include="Avalonia.Desktop" Version="$(AvaloniaVersion)"/>
-        <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
-        <PackageReference Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)">
-            <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
-            <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
-        </PackageReference>
-        <PackageReference Include="CommunityToolkit.Mvvm" Version="$(CommunityToolkitVersion)"/>
-    </ItemGroup>
-
-    <ItemGroup>
-        <ProjectReference Include="..\..\src\Semi.Avalonia.TreeDataGrid\Semi.Avalonia.TreeDataGrid.csproj"/>
-        <ProjectReference Include="..\..\src\Semi.Avalonia\Semi.Avalonia.csproj"/>
-    </ItemGroup>
-</Project>

demo/Semi.Avalonia.TreeDataGrid.Demo/ViewModels/SongsPageViewModel.cs

@@ -1,184 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Linq;
-using Avalonia.Controls;
-using Avalonia.Controls.Models.TreeDataGrid;
-using CommunityToolkit.Mvvm.ComponentModel;
-
-namespace Semi.Avalonia.TreeDataGrid.Demo.ViewModels;
-
-public class SongsPageViewModel: ObservableObject
-{
-    private readonly ObservableCollection<SongViewModel> _songs;
-    
-    public FlatTreeDataGridSource<SongViewModel> Songs { get; }
-
-    public SongsPageViewModel()
-    {
-        _songs = new ObservableCollection<SongViewModel>(Song.Songs.Select(a => new SongViewModel()
-        {
-            Title = a.Title, Artist = a.Artist, Album = a.Album, CountOfComment = a.CountOfComment,
-            IsSelected = false
-        }));
-
-        Songs = new FlatTreeDataGridSource<SongViewModel>(_songs)
-        {
-            Columns =
-            {
-                new CheckBoxColumn<SongViewModel>("IsSelected", a => a.IsSelected,
-                    (model, b) => { model.IsSelected = b; }, new GridLength(108, GridUnitType.Pixel)),
-                new TextColumn<SongViewModel, string>("Title", a => a.Title, (o, a) => o.Title = a,
-                    new GridLength(6, GridUnitType.Star)),
-                new TextColumn<SongViewModel, string>("Artist", a => a.Artist, (o, a) => o.Artist = a,
-                    new GridLength(6, GridUnitType.Star)),
-                new TemplateColumn<SongViewModel>("Album", "AlbumCell", "AlbumEditCell",
-                    new GridLength(6, GridUnitType.Star)),
-                new TemplateColumn<SongViewModel>("Comments", "CommentsCell", "CommentsEditCell",
-                    new GridLength(6, GridUnitType.Star)),
-            }
-        };
-    }
-
-}
-
-
-public class Song
-{
-    public string? Title { get; set; }
-    public string? Artist { get; set; }
-    public TimeSpan? Duration { get; set; }
-    public string? Album { get; set; }
-    public int? CountOfComment { get; set; }
-    public string Url { get; set; }
-
-    public Song(string title, string artist, int m, int s, string album, int countOfComment, int netEaseId)
-    {
-        Title = title;
-        Artist = artist;
-        Duration = new TimeSpan(0, m, s);
-        Album = album;
-        CountOfComment = countOfComment;
-        Url = $"https://music.163.com/song?id={netEaseId}";
-        
-    }
-
-    public static List<string> Albums { get; set; } = new List<string>()
-    {
-        "A.S.I.A",
-        "饕餮人间",
-        "七步咙咚呛",
-        "大惊小怪",
-        "The ONE",
-        "以梦为马 (壮志骄阳版)",
-        "emo了",
-        "一眼万年",
-        "冲刺吧",
-        "爱的赏味期限",
-        "COSMIC ANTHEM / 手紙",
-        "世界晚安",
-        "明年也要好好长大",
-        "320万年前",
-        "W.O.R.L.D.",
-    };
-
-    public static List<Song> Songs { get; set; } = new List<Song>()
-    {
-        new("好肚有肚(feat.李玲玉)", "熊猫堂ProducePandas", 2, 50, "A.S.I.A", 730, 1487039339),
-        new("荒诞秀", "熊猫堂ProducePandas", 3, 15, "A.S.I.A", 639, 1487037601),
-        new("长大", "熊猫堂ProducePandas", 4, 6, "A.S.I.A", 1114, 1487037690),
-        new("招财猫(feat.纪粹希(G-Tracy))", "熊猫堂ProducePandas", 3, 37, "A.S.I.A", 361, 1487039632),
-        new("千转", "熊猫堂ProducePandas", 4, 0, "A.S.I.A", 1115, 1477312398),
-        new("辣辣辣", "熊猫堂ProducePandas", 3, 24, "A.S.I.A", 1873, 1465043716),
-        new("碎碎念", "熊猫堂ProducePandas", 3, 25, "A.S.I.A", 676, 1474142064),
-        new("盘他", "熊猫堂ProducePandas", 2, 16, "A.S.I.A", 365, 1481652786),
-        new("Na Na Na", "熊猫堂ProducePandas", 3, 26, "A.S.I.A", 312, 1469022662),
-        new("Indigo", "熊猫堂ProducePandas", 3, 15, "A.S.I.A", 137, 1487039517),
-        new("饕餮人间", "熊猫堂ProducePandas", 3, 20, "饕餮人间", 1295, 1499584605),
-        new("七步咙咚呛", "熊猫堂ProducePandas", 3, 10, "七步咙咚呛", 175, 1809095152),
-        new("大惊小怪", "熊猫堂ProducePandas", 3, 32, "大惊小怪", 10420, 1847477425),
-        new("工具人", "熊猫堂ProducePandas", 2, 46, "大惊小怪", 1135, 1847476499),
-        new("以梦为马", "熊猫堂ProducePandas", 4, 19, "大惊小怪", 18361, 1836034373),
-        new("以梦为马(Piano Version)", "熊猫堂ProducePandas", 3, 4, "大惊小怪", 570, 1847477423),
-        new("The ONE", "熊猫堂ProducePandas", 2, 58, "The ONE", 1508, 1864329424),
-        new("The ONE(日文版)", "熊猫堂ProducePandas", 2, 57, "The ONE", 385, 1864329429),
-        new("以梦为马 (壮志骄阳版)", "熊猫堂ProducePandas", 4, 19, "以梦为马 (壮志骄阳版)", 161, 1865138896),
-        new("New Horse", "熊猫堂ProducePandas", 2, 30, "emo了", 643, 1887021307),
-        new("不例外", "熊猫堂ProducePandas", 3, 31, "emo了", 1818, 1887022665),
-        new("满意", "熊猫堂ProducePandas", 4, 32, "emo了", 1081, 1882433472),
-        new("就算与全世界为敌也要跟你在一起", "熊猫堂ProducePandas", 3, 32, "emo了", 2119, 1881759960),
-        new("The ONE", "熊猫堂ProducePandas", 2, 58, "emo了", 67, 1887022648),
-        new("口香糖", "熊猫堂ProducePandas", 3, 10, "emo了", 2181, 1885502254),
-        new("Suuuuuuper Mario", "熊猫堂ProducePandas", 3, 32, "emo了", 1010, 1887021318),
-        new("饕餮人间", "熊猫堂ProducePandas", 3, 22, "emo了", 109, 1887021320),
-        new("以梦为马 (壮志骄阳版)", "熊猫堂ProducePandas", 4, 21, "emo了", 34, 1887022666),
-        new("The ONE(日文版)", "熊猫堂ProducePandas", 2, 57, "emo了", 27, 1887022646),
-        new("满意(DJheap九天版)", "熊猫堂ProducePandas", 4, 31, "emo了", 31, 1901605941),
-        new("一眼万年", "熊猫堂ProducePandas", 3, 54, "一眼万年", 20, 1922599361),
-        new("冲刺", "熊猫堂ProducePandas", 3, 49, "冲刺吧", 1006, 1932878194),
-        new("滴答滴", "熊猫堂ProducePandas", 2, 30, "爱的赏味期限", 86, 1957515790),
-        new("热带季风", "熊猫堂ProducePandas", 2, 45, "爱的赏味期限", 212, 1957514964),
-        new("渣", "熊猫堂ProducePandas", 3, 28, "爱的赏味期限", 22, 1957514965),
-        new("独特", "熊猫堂ProducePandas", 3, 33, "爱的赏味期限", 62, 1957514966),
-        new("雨后", "熊猫堂ProducePandas", 4, 15, "爱的赏味期限", 23, 1957514967),
-        new("然后然后", "熊猫堂ProducePandas", 3, 50, "爱的赏味期限", 108, 1957514968),
-        new("丢", "熊猫堂ProducePandas", 3, 26, "爱的赏味期限", 30, 1957515792),
-        new("热带疾风(FACEVOID桃心连哥 Remix)", "熊猫堂ProducePandas", 3, 23, "爱的赏味期限", 55, 1957515793),
-        new("COSMIC ANTHEM -Japanese Ver.-", "熊猫堂ProducePandas", 3, 11, "COSMIC ANTHEM / 手紙", 0, 1977171493),
-        new("手紙 (「長大-You Raise Me Up-」-Japanese Ver.-)", "熊猫堂ProducePandas", 4, 11, "COSMIC ANTHEM / 手紙", 0,
-            1977171494),
-        new("COSMIC ANTHEM -Chinese Ver.-", "熊猫堂ProducePandas", 3, 31, "COSMIC ANTHEM / 手紙", 0, 1977172202),
-        new("世界晚安", "熊猫堂ProducePandas", 2, 59, "世界晚安", 652, 1985063377),
-        new("世界晚安(泰文版)", "熊猫堂ProducePandas", 2, 59, "世界晚安", 134, 1987842504),
-        new("世界晚安(钢琴版)", "熊猫堂ProducePandas", 3, 2, "世界晚安", 76, 1990475933),
-        new("世界晚安(泰文钢琴版)", "熊猫堂ProducePandas", 3, 2, "世界晚安", 29, 1990475934),
-        new("世界晚安(DJ沈念版)", "熊猫堂ProducePandas", 3, 9, "世界晚安", 34, 2014263184),
-        new("世界晚安(钢琴配乐)", "熊猫堂ProducePandas", 2, 59, "世界晚安", 11, 2014263185),
-        new("明年也要好好长大", "熊猫堂ProducePandas", 3, 12, "明年也要好好长大", 0, 2010515162),
-        new("320万年前（DJ沈念版）", "熊猫堂ProducePandas", 3, 21, "320万年前", 8, 2055888636),
-        new("320万年前", "熊猫堂ProducePandas", 3, 7, "W.O.R.L.D.", 329, 2049770469),
-        new("隐德来希", "熊猫堂ProducePandas", 3, 3, "W.O.R.L.D.", 594, 2061317924),
-        new("孔明", "熊猫堂ProducePandas", 3, 59, "W.O.R.L.D.", 91, 2063175274),
-        new("锦鲤卟噜噜", "熊猫堂ProducePandas", 3, 5, "W.O.R.L.D.", 67, 2059208262),
-        new("指鹿为马", "熊猫堂ProducePandas", 3, 12, "W.O.R.L.D.", 74, 2063175272),
-        new("热带季风Remix", "熊猫堂ProducePandas", 3, 22, "W.O.R.L.D.", 23, 2063173319),
-        new("加州梦境", "熊猫堂ProducePandas", 2, 56, "W.O.R.L.D.", 1662, 2063173324),
-        new("渐进自由", "熊猫堂ProducePandas", 4, 19, "W.O.R.L.D.", 124, 2063173321),
-        new("世界所有的烂漫", "熊猫堂ProducePandas", 3, 30, "W.O.R.L.D.", 335, 2053388775),
-    };
-}
-
-public class SongViewModel: ObservableObject
-{
-    private string? _title;
-    private string? _artist;
-    private string? _album;
-    private int? _countOfComment;
-    private bool? _isSelected;
-    public string? Title
-    {
-        get => _title;
-        set => SetProperty(ref _title, value);
-    }
-    public string? Artist
-    {
-        get => _artist;
-        set => SetProperty(ref _artist, value);
-    }
-    public string? Album
-    {
-        get => _album;
-        set => SetProperty(ref _album, value);
-    }
-    public int? CountOfComment
-    {
-        get => _countOfComment;
-        set => SetProperty(ref _countOfComment, value);
-    }
-    public bool? IsSelected
-    {
-        get => _isSelected;
-        set => SetProperty(ref _isSelected, value);
-    }
-    
-}

demo/Semi.Avalonia.TreeDataGrid.Demo/app.manifest

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
-  <!-- This manifest is used on Windows only.
-       Don't remove it as it might cause problems with window transparency and embeded controls.
-       For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
-  <assemblyIdentity version="1.0.0.0" name="Semi.Avalonia.TreeDataGrid.Demo.Desktop"/>
-
-  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
-    <application>
-      <!-- A list of the Windows versions that this application has been tested on
-           and is designed to work with. Uncomment the appropriate elements
-           and Windows will automatically select the most compatible environment. -->
-
-      <!-- Windows 10 -->
-      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
-    </application>
-  </compatibility>
-</assembly>