feat: single view trial.

src/Ursa/Windows/UrsaView.cs

@@ -0,0 +1,55 @@
+using Avalonia;
+using Avalonia.Controls;
+
+namespace Ursa.Controls;
+
+/// <summary>
+/// Ursa window is designed to 
+/// </summary>
+public class UrsaView: ContentControl
+{
+    public static readonly StyledProperty<bool> IsTitleBarVisibleProperty =
+        UrsaWindow.IsTitleBarVisibleProperty.AddOwner<UrsaView>();
+
+    public bool IsTitleBarVisible
+    {
+        get => GetValue(IsTitleBarVisibleProperty);
+        set => SetValue(IsTitleBarVisibleProperty, value);
+    }
+
+    public static readonly StyledProperty<object?> LeftContentProperty =
+        UrsaWindow.LeftContentProperty.AddOwner<UrsaView>();
+
+    public object? LeftContent
+    {
+        get => GetValue(LeftContentProperty);
+        set => SetValue(LeftContentProperty, value);
+    }
+
+    public static readonly StyledProperty<object?> RightContentProperty =
+        UrsaWindow.RightContentProperty.AddOwner<UrsaView>();
+
+    public object? RightContent
+    {
+        get => GetValue(RightContentProperty);
+        set => SetValue(RightContentProperty, value);
+    }
+
+    public static readonly StyledProperty<object?> TitleBarContentProperty =
+        UrsaWindow.TitleBarContentProperty.AddOwner<UrsaView>();
+
+    public object? TitleBarContent
+    {
+        get => GetValue(TitleBarContentProperty);
+        set => SetValue(TitleBarContentProperty, value);
+    }
+
+    public static readonly StyledProperty<Thickness> TitleBarMarginProperty =
+        UrsaWindow.TitleBarMarginProperty.AddOwner<UrsaView>();
+    
+    public Thickness TitleBarMargin
+    {
+        get => GetValue(TitleBarMarginProperty);
+        set => SetValue(TitleBarMarginProperty, value);
+    }
+}