feat: class input control.

demo/Ursa.Demo/Models/MenuKeys.cs

@@ -6,6 +6,7 @@ public static class MenuKeys
     public const string MenuKeyBadge = "Badge";
     public const string MenuKeyBanner = "Banner";
     public const string MenuKeyButtonGroup = "ButtonGroup";
+    public const string MenuKeyClassInput = "Class Input";
     public const string MenuKeyDialog = "Dialog";
     public const string MenuKeyDivider = "Divider";
     public const string MenuKeyDualBadge = "DualBadge";

demo/Ursa.Demo/Pages/BannerDemo.axaml

@@ -47,6 +47,5 @@
                 </Grid>
             </Border>
         </Grid>
-
     </StackPanel>
 </UserControl>

demo/Ursa.Demo/Pages/ClassInputDemo.axaml

@@ -0,0 +1,16 @@
+<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:u="https://irihi.tech/ursa"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="Ursa.Demo.Pages.ClassInputDemo">
+    <StackPanel HorizontalAlignment="Left" Spacing="20">
+        <u:ControlClassesInput Name="input" />
+        <Button u:ControlClassesInput.Source="{Binding #input}" Content="Hello Panda" />
+        <Button u:ControlClassesInput.Source="{Binding #input}" Content="Hello Panda" />
+        <Button u:ControlClassesInput.Source="{Binding #input}" Content="Hello Panda" />
+        <TextBox u:ControlClassesInput.Source="{Binding #input}" Width="100" Text="100"></TextBox>
+        <ProgressBar u:ControlClassesInput.Source="{Binding #input}" Width="200" Value="20" ShowProgressText="True"></ProgressBar>
+    </StackPanel>
+</UserControl>

demo/Ursa.Demo/Pages/ClassInputDemo.axaml.cs

@@ -0,0 +1,13 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Ursa.Demo.Pages;
+
+public partial class ClassInputDemo : UserControl
+{
+    public ClassInputDemo()
+    {
+        InitializeComponent();
+    }
+}

demo/Ursa.Demo/ViewModels/ClassInputDemoViewModel.cs

@@ -0,0 +1,8 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Ursa.Demo.ViewModels;
+
+public class ClassInputDemoViewModel: ObservableObject
+{
+    
+}

demo/Ursa.Demo/ViewModels/MainViewViewModel.cs

@@ -28,6 +28,7 @@ public class MainViewViewModel : ViewModelBase
             MenuKeys.MenuKeyBadge => new BadgeDemoViewModel(),
             MenuKeys.MenuKeyBanner => new BannerDemoViewModel(),
             MenuKeys.MenuKeyButtonGroup => new ButtonGroupDemoViewModel(),
+            MenuKeys.MenuKeyClassInput => new ClassInputDemoViewModel(),
             MenuKeys.MenuKeyDialog => new DialogDemoViewModel(),
             MenuKeys.MenuKeyDivider => new DividerDemoViewModel(),
             MenuKeys.MenuKeyDualBadge => new DualBadgeDemoViewModel(),

demo/Ursa.Demo/ViewModels/MenuViewModel.cs

@@ -15,6 +15,7 @@ public class MenuViewModel: ViewModelBase
             new() { MenuHeader = "Badge", Key = MenuKeys.MenuKeyBadge },
             new() { MenuHeader = "Banner", Key = MenuKeys.MenuKeyBanner },
             new() { MenuHeader = "Button Group", Key = MenuKeys.MenuKeyButtonGroup, Status = "Updated"},
+            new() { MenuHeader = "Class Input", Key = MenuKeys.MenuKeyClassInput, Status = "New" },
             new() { MenuHeader = "Dialog", Key = MenuKeys.MenuKeyDialog },
             new() { MenuHeader = "Divider", Key = MenuKeys.MenuKeyDivider },
             new() { MenuHeader = "DualBadge", Key = MenuKeys.MenuKeyDualBadge },

src/Ursa.Themes.Semi/Controls/ControlClassesInput.axaml

@@ -0,0 +1,14 @@
+<ResourceDictionary
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:u="https://irihi.tech/ursa">
+    <!--  Add Resources Here  -->
+    <ControlTheme x:Key="{x:Type u:ControlClassesInput}" TargetType="u:ControlClassesInput">
+        <Setter Property="Width" Value="200" />
+        <Setter Property="Template">
+            <ControlTemplate TargetType="u:ControlClassesInput">
+                <u:TagInput HorizontalAlignment="Stretch" Tags="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TargetClasses, Mode=TwoWay}" />
+            </ControlTemplate>
+        </Setter>
+    </ControlTheme>
+</ResourceDictionary>

src/Ursa.Themes.Semi/Controls/_index.axaml

@@ -4,6 +4,7 @@
         <ResourceInclude Source="Badge.axaml" />
         <ResourceInclude Source="Banner.axaml" />
         <ResourceInclude Source="ButtonGroup.axaml" />
+        <ResourceInclude Source="ControlClassesInput.axaml" />
         <ResourceInclude Source="Dialog.axaml" />
         <ResourceInclude Source="DialogShared.axaml" />
         <ResourceInclude Source="Divider.axaml" />

src/Ursa/Controls/ControlClassesInput/ControlClassesInput.cs

@@ -0,0 +1,147 @@
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using Avalonia;
+using Avalonia.Collections;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+
+namespace Ursa.Controls;
+
+public class ControlClassesInput: TemplatedControl
+{
+    LinkedList<List<string>> _history = new();
+    LinkedList<List<string>> _undoHistory = new();
+    
+    public int CountOfHistoricalRecord { get; set; } = 10;
+    
+    public static readonly StyledProperty<Control?> TargetProperty = AvaloniaProperty.Register<ControlClassesInput, Control?>(
+        nameof(Target));
+
+    public Control? Target
+    {
+        get => GetValue(TargetProperty);
+        set => SetValue(TargetProperty, value);
+    }
+    
+    public static readonly StyledProperty<ObservableCollection<string>?> TargetClassesProperty = AvaloniaProperty.Register<ControlClassesInput, ObservableCollection<string>?>(
+        nameof(TargetClasses));
+    
+    public ObservableCollection<string>? TargetClasses
+    {
+        get => GetValue(TargetClassesProperty);
+        set => SetValue(TargetClassesProperty, value);
+    }
+
+    public static readonly AttachedProperty<ControlClassesInput?> SourceProperty =
+        AvaloniaProperty.RegisterAttached<ControlClassesInput, StyledElement, ControlClassesInput?>("Source");
+
+    public static void SetSource(StyledElement obj, ControlClassesInput value) => obj.SetValue(SourceProperty, value);
+    public static ControlClassesInput? GetSource(StyledElement obj) => obj.GetValue(SourceProperty);
+
+    static ControlClassesInput()
+    {
+        TargetClassesProperty.Changed.AddClassHandler<ControlClassesInput, ObservableCollection<string>?>((o,e)=>o.OnClassesChanged(e));
+        SourceProperty.Changed.AddClassHandler<StyledElement, ControlClassesInput?>(HandleSourceChange);
+    }
+
+    public ControlClassesInput()
+    {
+        TargetClasses = new ObservableCollection<string>();
+        TargetClasses.CollectionChanged += InccOnCollectionChanged;
+    }
+
+    private List<StyledElement> _targets = new();
+    
+    private static void HandleSourceChange(StyledElement arg1, AvaloniaPropertyChangedEventArgs<ControlClassesInput?> arg2)
+    {
+        var newControl = arg2.NewValue.Value;
+        if (newControl is null) return;
+        newControl._targets.Add(arg1);
+        var oldControl = arg2.OldValue.Value;
+        if (oldControl is not null)
+        {
+            newControl._targets.Remove(oldControl);
+        }
+    }
+
+    private static readonly char[] _separators = {' ', '\t', '\n', '\r'};
+    
+    private void OnClassesChanged(AvaloniaPropertyChangedEventArgs<ObservableCollection<string>?> args)
+    {
+        var newValue = args.NewValue.Value;
+        if (newValue is null)
+        {
+            SaveHistory(new List<string>());
+            return;
+        }
+        else
+        {
+            var classes = newValue.Where(a => !string.IsNullOrWhiteSpace(a)).Distinct().ToList();
+            SaveHistory(classes);
+            if (newValue is INotifyCollectionChanged incc)
+            {
+                incc.CollectionChanged+=InccOnCollectionChanged;
+            }
+            return;
+        }
+    }
+
+    private void InccOnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+    {
+        SaveHistory(TargetClasses?.ToList() ?? new List<string>());
+    }
+
+    private void SaveHistory(List<string> strings)
+    {
+        _history.AddLast(strings);
+        if (_history.Count > CountOfHistoricalRecord)
+        {
+            _history.RemoveFirst();
+        }
+        SetClassesToTarget();
+    }
+
+    private void SetClassesToTarget()
+    {
+        List<string> strings;
+        if (_history.Count == 0)
+        {
+            strings = new List<string>();
+        }
+        else
+        {
+            strings = _history.Last.Value;
+        }
+        if (Target is not null)
+        {
+            Target.Classes.Replace(strings);
+        }
+        foreach (var target in _targets)
+        {
+            target.Classes.Replace(strings);
+        }
+    }
+
+    public void UnDo()
+    {
+        var node = _history.Last;
+        _history.RemoveLast();
+        _undoHistory.AddFirst(node);
+        SetCurrentValue(TargetClassesProperty, new AvaloniaList<string>(node.Value));
+        SetClassesToTarget();
+    }
+
+    public void Redo()
+    {
+        var node = _undoHistory.First;
+        _undoHistory.RemoveFirst();
+        _history.AddLast(node);
+        SetCurrentValue(TargetClassesProperty, new AvaloniaList<string>(node.Value));
+        SetClassesToTarget();
+    }
+
+    public void Clear()
+    {
+        SaveHistory(new List<string>());
+    }
+}