From ff8d4b1dcd1582ad619625e061a484d182216ceb Mon Sep 17 00:00:00 2001
From: rabbitism <popmessiah@hotmail.com>
Date: Sun, 4 Feb 2024 16:06:34 +0800
Subject: [PATCH] WIP: animation.

---
 demo/Ursa.Demo/Models/MenuKeys.cs             |   1 +
 demo/Ursa.Demo/Pages/DrawerDemo.axaml         |  14 +++
 demo/Ursa.Demo/Pages/DrawerDemo.axaml.cs      |  13 +++
 .../ViewModels/DrawerDemoViewModel.cs         |  23 ++++
 .../Ursa.Demo/ViewModels/MainViewViewModel.cs |   1 +
 demo/Ursa.Demo/ViewModels/MenuViewModel.cs    |   1 +
 src/Ursa.Themes.Semi/Controls/Drawer.axaml    |  44 +++++++
 src/Ursa.Themes.Semi/Controls/_index.axaml    |   1 +
 .../Controls/Dialog/DefaultDialogControl.cs   |   1 -
 src/Ursa/Controls/Dialog/OverlayDialogHost.cs | 107 ++++++++++++++++--
 .../Controls/Drawer/CustomDrawerControl.cs    |   6 +
 .../Controls/Drawer/DefaultDrawerControl.cs   |  35 +++++-
 src/Ursa/Controls/Drawer/Drawer.cs            |  15 ++-
 src/Ursa/Controls/Drawer/DrawerControlBase.cs |  28 ++++-
 .../Controls/Layout/DefaultDialogLayout.cs    |   8 ++
 15 files changed, 282 insertions(+), 16 deletions(-)
 create mode 100644 demo/Ursa.Demo/Pages/DrawerDemo.axaml
 create mode 100644 demo/Ursa.Demo/Pages/DrawerDemo.axaml.cs
 create mode 100644 demo/Ursa.Demo/ViewModels/DrawerDemoViewModel.cs
 create mode 100644 src/Ursa.Themes.Semi/Controls/Drawer.axaml
 create mode 100644 src/Ursa/Controls/Drawer/CustomDrawerControl.cs
 create mode 100644 src/Ursa/Controls/Layout/DefaultDialogLayout.cs

diff --git a/demo/Ursa.Demo/Models/MenuKeys.cs b/demo/Ursa.Demo/Models/MenuKeys.cs
index 2b30912..f97a060 100644
--- a/demo/Ursa.Demo/Models/MenuKeys.cs
+++ b/demo/Ursa.Demo/Models/MenuKeys.cs
@@ -8,6 +8,7 @@ public static class MenuKeys
     public const string MenuKeyButtonGroup = "ButtonGroup";
     public const string MenuKeyDialog = "Dialog";
     public const string MenuKeyDivider = "Divider";
+    public const string MenuKeyDrawer = "Drawer";
     public const string MenuKeyDualBadge = "DualBadge";
     public const string MenuKeyEnumSelector = "EnumSelector";
     public const string MenuKeyImageViewer = "ImageViewer";
diff --git a/demo/Ursa.Demo/Pages/DrawerDemo.axaml b/demo/Ursa.Demo/Pages/DrawerDemo.axaml
new file mode 100644
index 0000000..10d780a
--- /dev/null
+++ b/demo/Ursa.Demo/Pages/DrawerDemo.axaml
@@ -0,0 +1,14 @@
+<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"
+             mc:Ignorable="d" d:DesignWidth="800"
+             xmlns:vm="clr-namespace:Ursa.Demo.ViewModels;assembly=Ursa.Demo"
+             x:DataType="vm:DrawerDemoViewModel"
+             x:CompileBindings="True"
+             d:DesignHeight="450"
+             x:Class="Ursa.Demo.Pages.DrawerDemo">
+    <StackPanel HorizontalAlignment="Left">
+        <Button Content="Call Drawer" Command="{Binding OpenDrawerCommand}"></Button>
+    </StackPanel>
+</UserControl>
diff --git a/demo/Ursa.Demo/Pages/DrawerDemo.axaml.cs b/demo/Ursa.Demo/Pages/DrawerDemo.axaml.cs
new file mode 100644
index 0000000..3aa8916
--- /dev/null
+++ b/demo/Ursa.Demo/Pages/DrawerDemo.axaml.cs
@@ -0,0 +1,13 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Ursa.Demo.Pages;
+
+public partial class DrawerDemo : UserControl
+{
+    public DrawerDemo()
+    {
+        InitializeComponent();
+    }
+}
\ No newline at end of file
diff --git a/demo/Ursa.Demo/ViewModels/DrawerDemoViewModel.cs b/demo/Ursa.Demo/ViewModels/DrawerDemoViewModel.cs
new file mode 100644
index 0000000..ff9fed2
--- /dev/null
+++ b/demo/Ursa.Demo/ViewModels/DrawerDemoViewModel.cs
@@ -0,0 +1,23 @@
+using System.Threading.Tasks;
+using System.Windows.Input;
+using Avalonia.Controls;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using Ursa.Controls;
+
+namespace Ursa.Demo.ViewModels;
+
+public class DrawerDemoViewModel: ObservableObject
+{
+    public ICommand OpenDrawerCommand { get; set; }
+
+    public DrawerDemoViewModel()
+    {
+        OpenDrawerCommand = new AsyncRelayCommand(OpenDrawer);
+    }
+
+    private async Task OpenDrawer()
+    {
+        await Drawer.Show<Calendar, string, bool>("Hello World");
+    }
+}
\ No newline at end of file
diff --git a/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs b/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs
index 50ab100..6161fde 100644
--- a/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs
+++ b/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs
@@ -30,6 +30,7 @@ public class MainViewViewModel : ViewModelBase
             MenuKeys.MenuKeyButtonGroup => new ButtonGroupDemoViewModel(),
             MenuKeys.MenuKeyDialog => new DialogDemoViewModel(),
             MenuKeys.MenuKeyDivider => new DividerDemoViewModel(),
+            MenuKeys.MenuKeyDrawer => new DrawerDemoViewModel(),
             MenuKeys.MenuKeyDualBadge => new DualBadgeDemoViewModel(),
             MenuKeys.MenuKeyEnumSelector => new EnumSelectorDemoViewModel(),
             MenuKeys.MenuKeyImageViewer => new ImageViewerDemoViewModel(),
diff --git a/demo/Ursa.Demo/ViewModels/MenuViewModel.cs b/demo/Ursa.Demo/ViewModels/MenuViewModel.cs
index 672c5b4..45fa3b4 100644
--- a/demo/Ursa.Demo/ViewModels/MenuViewModel.cs
+++ b/demo/Ursa.Demo/ViewModels/MenuViewModel.cs
@@ -17,6 +17,7 @@ public class MenuViewModel: ViewModelBase
             new() { MenuHeader = "Button Group", Key = MenuKeys.MenuKeyButtonGroup, Status = "Updated"},
             new() { MenuHeader = "Dialog", Key = MenuKeys.MenuKeyDialog },
             new() { MenuHeader = "Divider", Key = MenuKeys.MenuKeyDivider },
+            new() { MenuHeader = "Drawer", Key = MenuKeys.MenuKeyDrawer },
             new() { MenuHeader = "DualBadge", Key = MenuKeys.MenuKeyDualBadge },
             new() { MenuHeader = "Enum Selector", Key = MenuKeys.MenuKeyEnumSelector },
             new() { MenuHeader = "Icon Button", Key = MenuKeys.MenuKeyIconButton },
diff --git a/src/Ursa.Themes.Semi/Controls/Drawer.axaml b/src/Ursa.Themes.Semi/Controls/Drawer.axaml
new file mode 100644
index 0000000..31b3a54
--- /dev/null
+++ b/src/Ursa.Themes.Semi/Controls/Drawer.axaml
@@ -0,0 +1,44 @@
+<ResourceDictionary xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:u="https://irihi.tech/ursa">
+    <ControlTheme TargetType="u:CustomDrawerControl" x:Key="{x:Type u:CustomDrawerControl}">
+        <Setter Property="VerticalAlignment" Value="Stretch"></Setter>
+        <Setter Property="MinWidth" Value="400"></Setter>
+        <Setter Property="Template">
+            <ControlTemplate TargetType="u:CustomDrawerControl">
+                <Border Margin="8 0 0 0"
+                        Padding="0"
+                        HorizontalAlignment="Stretch"
+                        VerticalAlignment="Stretch"
+                        Classes="Shadow"
+                        ClipToBounds="False"
+                        CornerRadius="12 0 0 12"
+                        IsHitTestVisible="True"
+                        Theme="{DynamicResource CardBorder}">
+                    <Border ClipToBounds="True" CornerRadius="12 0 0 12">
+                        <Grid RowDefinitions="Auto, *">
+                            <ContentPresenter
+                                Name="PART_ContentPresenter"
+                                Grid.Row="0"
+                                Grid.RowSpan="2"
+                                Content="{TemplateBinding Content}" />
+                            <Grid Grid.Row="0" ColumnDefinitions="*, Auto">
+                                <Panel
+                                    Name="{x:Static u:DialogControl.PART_TitleArea}"
+                                    Grid.Column="0"
+                                    Grid.ColumnSpan="2"
+                                    Background="Transparent" />
+                                <Button
+                                    Name="{x:Static u:MessageBoxWindow.PART_CloseButton}"
+                                    Grid.Column="1"
+                                    Margin="0,24,24,0"
+                                    DockPanel.Dock="Right"
+                                    Theme="{DynamicResource CloseButton}" />
+                            </Grid>
+                        </Grid>
+                    </Border>
+                </Border>
+            </ControlTemplate>
+        </Setter>
+    </ControlTheme>
+</ResourceDictionary>
diff --git a/src/Ursa.Themes.Semi/Controls/_index.axaml b/src/Ursa.Themes.Semi/Controls/_index.axaml
index f21a847..1821ec6 100644
--- a/src/Ursa.Themes.Semi/Controls/_index.axaml
+++ b/src/Ursa.Themes.Semi/Controls/_index.axaml
@@ -7,6 +7,7 @@
         <ResourceInclude Source="Dialog.axaml" />
         <ResourceInclude Source="DialogShared.axaml" />
         <ResourceInclude Source="Divider.axaml" />
+        <ResourceInclude Source="Drawer.axaml" />
         <ResourceInclude Source="DualBadge.axaml" />
         <ResourceInclude Source="EnumSelector.axaml" />
         <ResourceInclude Source="IconButton.axaml" />
diff --git a/src/Ursa/Controls/Dialog/DefaultDialogControl.cs b/src/Ursa/Controls/Dialog/DefaultDialogControl.cs
index a5d7935..2d0b25f 100644
--- a/src/Ursa/Controls/Dialog/DefaultDialogControl.cs
+++ b/src/Ursa/Controls/Dialog/DefaultDialogControl.cs
@@ -9,7 +9,6 @@ using Ursa.EventArgs;
 
 namespace Ursa.Controls;
 
-
 [TemplatePart(PART_OKButton, typeof(Button))]
 [TemplatePart(PART_CancelButton, typeof(Button))]
 [TemplatePart(PART_YesButton, typeof(Button))]
diff --git a/src/Ursa/Controls/Dialog/OverlayDialogHost.cs b/src/Ursa/Controls/Dialog/OverlayDialogHost.cs
index cfb43e7..5a586fd 100644
--- a/src/Ursa/Controls/Dialog/OverlayDialogHost.cs
+++ b/src/Ursa/Controls/Dialog/OverlayDialogHost.cs
@@ -1,19 +1,22 @@
 using Avalonia;
 using Avalonia.Animation;
+using Avalonia.Animation.Easings;
 using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
 using Avalonia.Controls.Templates;
 using Avalonia.Input;
 using Avalonia.Layout;
 using Avalonia.Media;
+using Avalonia.Styling;
 using Avalonia.Utilities;
+using Ursa.EventArgs;
 
 namespace Ursa.Controls;
 
 public class OverlayDialogHost : Canvas
 {
     private readonly List<DialogControl> _dialogs = new();
-    private readonly List<DialogControl> _modalDialogs = new(); 
+    private readonly List<Control> _modalDialogs = new(); 
     private readonly List<Border> _masks = new();
 
     public string? HostId { get; set; }
@@ -57,9 +60,16 @@ public class OverlayDialogHost : Canvas
         if (sender is Border border)
         {
             int i = _masks.IndexOf(border);
-            DialogControl dialog = _modalDialogs[i];
-            dialog.CloseDialog();
-            border.RemoveHandler(PointerReleasedEvent, ClickBorderToCloseDialog);
+            if (_modalDialogs[i] is DialogControl dialog)
+            {
+                dialog?.CloseDialog();
+                border.RemoveHandler(PointerReleasedEvent, ClickBorderToCloseDialog);
+            }
+            else if(_modalDialogs[i] is DrawerControlBase drawer)
+            {
+                drawer.CloseDrawer();
+                border.RemoveHandler(PointerReleasedEvent, ClickBorderToCloseDialog);
+            }
         }
     }
 
@@ -87,7 +97,11 @@ public class OverlayDialogHost : Canvas
 
         foreach (var modalDialog in _modalDialogs)
         {
-            ResetDialogPosition(modalDialog, oldSize, newSize);
+            if (modalDialog is DialogControl c)
+            {
+                ResetDialogPosition(c, oldSize, newSize);
+            }
+            
         }
     }
     
@@ -168,10 +182,7 @@ public class OverlayDialogHost : Canvas
         ResetZIndices();
     }
 
-    internal void AddDrawer(DrawerControlBase control)
-    {
-        
-    }
+
 
     private void OnDialogControlClosing(object sender, object? e)
     {
@@ -225,6 +236,84 @@ public class OverlayDialogHost : Canvas
         control.AddHandler(DialogControl.ClosedEvent, OnDialogControlClosing);
         control.AddHandler(DialogControl.LayerChangedEvent, OnDialogLayerChanged);
     }
+    
+    internal async void AddDrawer(DrawerControlBase control)
+    {
+        var mask = CreateOverlayMask(false);
+        mask.Opacity = 0;
+        _masks.Add(mask);
+        _modalDialogs.Add(control);
+        // control.SetAsModal(true);
+        for (int i = 0; i < _masks.Count-1; i++)
+        {
+            _masks[i].Opacity = 0.5;
+        }
+        ResetZIndices();
+        this.Children.Add(mask);
+        this.Children.Add(control);
+        control.Measure(this.Bounds.Size);
+        control.Arrange(new Rect(control.DesiredSize));
+        control.Height = this.Bounds.Height;
+        control.AddHandler(DrawerControlBase.ClosedEvent, OnDrawerControlClosing);
+        // SetLeft(control, this.Bounds.Width - control.Bounds.Width);
+        var animation = CreateAnimation(control.Bounds.Width);
+        var animation2 = CreateOpacityAnimation();
+        await Task.WhenAll(animation.RunAsync(control), animation2.RunAsync(mask));
+    }
+
+    private Animation CreateAnimation(double width)
+    {
+        var animation = new Animation();
+        animation.Easing = new CubicEaseOut();
+        animation.FillMode = FillMode.Forward;
+        var keyFrame1 = new KeyFrame(){ Cue = new Cue(0.0) };
+        keyFrame1.Setters.Add(new Setter() { Property = Canvas.LeftProperty, Value = Bounds.Width });
+        var keyFrame2 = new KeyFrame() { Cue = new Cue(1.0) };
+        keyFrame2.Setters.Add(new Setter() { Property = Canvas.LeftProperty, Value = Bounds.Width - width });
+        animation.Children.Add(keyFrame1);
+        animation.Children.Add(keyFrame2);
+        animation.Duration = TimeSpan.FromSeconds(0.3);
+        return animation;
+    }
+    
+    private Animation CreateOpacityAnimation()
+    {
+        var animation = new Animation();
+        animation.FillMode = FillMode.Forward;
+        var keyFrame1 = new KeyFrame(){ Cue = new Cue(0.0) };
+        keyFrame1.Setters.Add(new Setter(){ Property = OpacityProperty, Value = 0.0});
+        var keyFrame2 = new KeyFrame() { Cue = new Cue(1.0) };
+        keyFrame2.Setters.Add(new Setter() { Property = OpacityProperty, Value = 1.0 });
+        animation.Children.Add(keyFrame1);
+        animation.Children.Add(keyFrame2);
+        animation.Duration = TimeSpan.FromSeconds(0.3);
+        return animation;
+    }
+
+    private void OnDrawerControlClosing(object sender, ResultEventArgs e)
+    {
+        if (sender is DrawerControlBase control)
+        {
+            Children.Remove(control);
+            control.RemoveHandler(DialogControl.ClosedEvent, OnDialogControlClosing);
+            control.RemoveHandler(DialogControl.LayerChangedEvent, OnDialogLayerChanged);
+            if (_modalDialogs.Contains(control))
+            {
+                _modalDialogs.Remove(control);
+                if (_masks.Count > 0)
+                {
+                    var last = _masks.Last();
+                    this.Children.Remove(last);
+                    _masks.Remove(last);
+                    if (_masks.Count > 0)
+                    {
+                        _masks.Last().IsVisible = true;
+                    }
+                }
+            }
+            ResetZIndices();
+        }
+    }
 
     // Handle dialog layer change event
     private void OnDialogLayerChanged(object sender, DialogLayerChangeEventArgs e)
diff --git a/src/Ursa/Controls/Drawer/CustomDrawerControl.cs b/src/Ursa/Controls/Drawer/CustomDrawerControl.cs
new file mode 100644
index 0000000..0e08d37
--- /dev/null
+++ b/src/Ursa/Controls/Drawer/CustomDrawerControl.cs
@@ -0,0 +1,6 @@
+namespace Ursa.Controls;
+
+public class CustomDrawerControl: DrawerControlBase
+{
+    
+}
\ No newline at end of file
diff --git a/src/Ursa/Controls/Drawer/DefaultDrawerControl.cs b/src/Ursa/Controls/Drawer/DefaultDrawerControl.cs
index c3a937f..4ca0811 100644
--- a/src/Ursa/Controls/Drawer/DefaultDrawerControl.cs
+++ b/src/Ursa/Controls/Drawer/DefaultDrawerControl.cs
@@ -1,6 +1,39 @@
-namespace Ursa.Controls;
+using Avalonia.Controls;
+using Avalonia.Controls.Metadata;
+using Avalonia.Controls.Primitives;
+using Avalonia.Interactivity;
+using Ursa.Common;
 
+namespace Ursa.Controls;
+
+[TemplatePart(PART_YesButton, typeof(Button))]
+[TemplatePart(PART_NoButton, typeof(Button))]
+[TemplatePart(PART_OKButton, typeof(Button))]
+[TemplatePart(PART_CancelButton, typeof(Button))]
 public class DefaultDrawerControl: DrawerControlBase
 {
+    public const string PART_YesButton = "PART_YesButton";
+    public const string PART_NoButton = "PART_NoButton";
+    public const string PART_OKButton = "PART_OKButton";
+    public const string PART_CancelButton = "PART_CancelButton";
     
+    private Button? _yesButton;
+    private Button? _noButton;
+    private Button? _okButton;
+    private Button? _cancelButton;
+    
+    protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
+    {
+        base.OnApplyTemplate(e);
+        EventHelper.UnregisterClickEvent(OnDefaultButtonClick, _yesButton, _noButton, _okButton, _cancelButton);
+        _yesButton = e.NameScope.Find<Button>(PART_YesButton);
+        _noButton = e.NameScope.Find<Button>(PART_NoButton);
+        _okButton = e.NameScope.Find<Button>(PART_OKButton);
+        _cancelButton = e.NameScope.Find<Button>(PART_CancelButton);
+        EventHelper.RegisterClickEvent(OnDefaultButtonClick, _yesButton, _noButton, _okButton, _cancelButton);
+    }
+    
+    private void OnDefaultButtonClick(object? sender, RoutedEventArgs e)
+    {
+    }
 }
\ No newline at end of file
diff --git a/src/Ursa/Controls/Drawer/Drawer.cs b/src/Ursa/Controls/Drawer/Drawer.cs
index 47469ca..dbf9a8d 100644
--- a/src/Ursa/Controls/Drawer/Drawer.cs
+++ b/src/Ursa/Controls/Drawer/Drawer.cs
@@ -1,12 +1,21 @@
-namespace Ursa.Controls;
+using Avalonia.Controls;
+using Ursa.Common;
+
+namespace Ursa.Controls;
 
 public static class Drawer
 {
-    public static Task<TResult?> ShowDialogAsync<TView, TViewModel, TResult>(TViewModel viewModel)
+    public static Task<TResult?> Show<TView, TViewModel, TResult>(TViewModel vm, Position position = Position.Right)
+        where TView: Control, new()
     {
         var host = OverlayDialogManager.GetHost(null);
         if (host is null) return Task.FromResult(default(TResult));
-        var dialog = new DefaultDrawerControl();
+        var dialog = new CustomDrawerControl()
+        {
+            Content = new TView(),
+            DataContext = vm,
+            Position = position,
+        };
         host.AddDrawer(dialog);
         return dialog.ShowAsync<TResult>();
     }
diff --git a/src/Ursa/Controls/Drawer/DrawerControlBase.cs b/src/Ursa/Controls/Drawer/DrawerControlBase.cs
index 5cc8eb7..a1786f0 100644
--- a/src/Ursa/Controls/Drawer/DrawerControlBase.cs
+++ b/src/Ursa/Controls/Drawer/DrawerControlBase.cs
@@ -1,5 +1,7 @@
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Controls.Metadata;
+using Avalonia.Controls.Primitives;
 using Avalonia.Interactivity;
 using Avalonia.Threading;
 using Ursa.Common;
@@ -7,10 +9,15 @@ using Ursa.EventArgs;
 
 namespace Ursa.Controls;
 
+[TemplatePart(PART_CloseButton, typeof(Button))]
 public abstract class DrawerControlBase: ContentControl
 {
+public const string PART_CloseButton = "PART_CloseButton";
+    
     internal bool CanClickOnMaskToClose { get; set; }
+    internal bool ShowCloseButton { get; set; }
 
+    protected internal Button? _closeButton;
     
     public static readonly StyledProperty<Position> PositionProperty = AvaloniaProperty.Register<DrawerControlBase, Position>(
         nameof(Position));
@@ -43,7 +50,7 @@ public abstract class DrawerControlBase: ContentControl
     public static readonly RoutedEvent<ResultEventArgs> ClosedEvent = RoutedEvent.Register<DrawerControlBase, ResultEventArgs>(
         nameof(Closed), RoutingStrategies.Bubble);
     
-    public event EventHandler<ResultEventArgs> Closed
+    public event EventHandler<ResultEventArgs>? Closed
     {
         add => AddHandler(ClosedEvent, value);
         remove => RemoveHandler(ClosedEvent, value);
@@ -54,6 +61,14 @@ public abstract class DrawerControlBase: ContentControl
         DataContextProperty.Changed.AddClassHandler<DrawerControlBase, object?>((o, e) => o.OnDataContextChange(e));
     }
 
+    protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
+    {
+        base.OnApplyTemplate(e);
+        EventHelper.UnregisterClickEvent(OnCloseButtonClick, _closeButton);
+        _closeButton = e.NameScope.Find<Button>(PART_CloseButton);
+        EventHelper.RegisterClickEvent(OnCloseButtonClick, _closeButton);
+    }
+
     private void OnDataContextChange(AvaloniaPropertyChangedEventArgs<object?> args)
     {
         if(args.OldValue.Value is IDialogContext oldContext)
@@ -71,6 +86,8 @@ public abstract class DrawerControlBase: ContentControl
         RaiseEvent(new ResultEventArgs(ClosedEvent, e));
     }
 
+    private void OnCloseButtonClick(object sender, RoutedEventArgs e) => CloseDrawer();
+
     public Task<T?> ShowAsync<T>(CancellationToken? token = default)
     { 
         var tcs = new TaskCompletionSource<T?>();
@@ -97,6 +114,13 @@ public abstract class DrawerControlBase: ContentControl
 
     internal virtual void CloseDrawer()
     {
-        RaiseEvent(new ResultEventArgs(ClosedEvent, null));
+        if (DataContext is IDialogContext context)
+        {
+            context.Close();
+        }
+        else
+        {
+            RaiseEvent(new ResultEventArgs(ClosedEvent, null));
+        }
     }
 }
\ No newline at end of file
diff --git a/src/Ursa/Controls/Layout/DefaultDialogLayout.cs b/src/Ursa/Controls/Layout/DefaultDialogLayout.cs
new file mode 100644
index 0000000..247a547
--- /dev/null
+++ b/src/Ursa/Controls/Layout/DefaultDialogLayout.cs
@@ -0,0 +1,8 @@
+using Avalonia.Controls.Primitives;
+
+namespace Ursa.Controls.Layout;
+
+public class DefaultDialogLayout: TemplatedControl
+{
+    
+}
\ No newline at end of file