Add resize functionality and improve dialog controls

This commit introduces the ability to resize dialogs by adding `CanResize` properties to dialog options and control classes. It also refines dialog controls' behavior and layout, ensuring consistent resizing capabilities across different dialog types. Additionally, it enhances the overlay feedback element's positioning logic and updates the resizer's appearance and visibility handling.

src/Ursa/Controls/Dialog/Dialog.cs

@@ -205,6 +205,8 @@ public static class Dialog
         window.IsCloseButtonVisible = options.IsCloseButtonVisible;
         window.ShowInTaskbar = options.ShowInTaskBar;
         window.CanDragMove = options.CanDragMove;
+        window.CanResize = options.CanResize;
+        window.IsManagedResizerVisible = options.CanResize;
         if (options.StartupLocation == WindowStartupLocation.Manual)
         {
             if (options.Position is not null)
@@ -229,6 +231,8 @@ public static class Dialog
         window.ShowInTaskbar = options.ShowInTaskBar;
         window.IsCloseButtonVisible = options.IsCloseButtonVisible;
         window.CanDragMove = options.CanDragMove;
+        window.IsManagedResizerVisible = options.CanResize;
+        window.CanResize = options.CanResize;
         if (options.StartupLocation == WindowStartupLocation.Manual)
         {
             if (options.Position is not null)

src/Ursa/Controls/Dialog/DialogControlBase.cs

@@ -24,6 +24,9 @@ public abstract class DialogControlBase : OverlayFeedbackElement
         AvaloniaProperty.RegisterDirect<DialogControlBase, bool>(
             nameof(IsFullScreen), o => o.IsFullScreen, (o, v) => o.IsFullScreen = v);
 
+    public static readonly StyledProperty<bool> CanResizeProperty = AvaloniaProperty.Register<DialogControlBase, bool>(
+        nameof(CanResize));
+
     protected internal Button? _closeButton;
 
     private bool _isFullScreen;
@@ -36,6 +39,12 @@ public abstract class DialogControlBase : OverlayFeedbackElement
         IsFullScreenProperty.AffectsPseudoClass<DialogControlBase>(PC_FullScreen);
     }
 
+    public bool CanResize
+    {
+        get => GetValue(CanResizeProperty);
+        set => SetValue(CanResizeProperty, value);
+    }
+
     internal HorizontalPosition HorizontalAnchor { get; set; } = HorizontalPosition.Center;
     internal VerticalPosition VerticalAnchor { get; set; } = VerticalPosition.Center;
     internal HorizontalPosition ActualHorizontalAnchor { get; set; }

src/Ursa/Controls/Dialog/DialogWindow.cs

@@ -17,8 +17,17 @@ public class DialogWindow : Window
     public const string PART_TitleArea = "PART_TitleArea";
 
     protected internal Button? _closeButton;
+
     private Panel? _titleArea;
-    public bool CanDragMove { get; set; } = true;
+
+    public static readonly StyledProperty<bool> IsManagedResizerVisibleProperty = AvaloniaProperty.Register<DialogWindow, bool>(
+        nameof(IsManagedResizerVisible));
+
+    public bool IsManagedResizerVisible
+    {
+        get => GetValue(IsManagedResizerVisibleProperty);
+        set => SetValue(IsManagedResizerVisibleProperty, value);
+    }
 
     static DialogWindow()
     {
@@ -26,9 +35,11 @@ public class DialogWindow : Window
             window.OnDataContextChange(e));
     }
 
+    public bool CanDragMove { get; set; } = true;
+    internal bool? IsCloseButtonVisible { get; set; }
+
     protected override Type StyleKeyOverride { get; } = typeof(DialogWindow);
 
-    internal bool? IsCloseButtonVisible { get; set; }
 
     private void OnDataContextChange(AvaloniaPropertyChangedEventArgs<object?> args)
     {

src/Ursa/Controls/Dialog/Options/DialogOptions.cs

@@ -30,4 +30,6 @@ public class DialogOptions
     public bool ShowInTaskBar { get; set; } = true;
     
     public bool CanDragMove { get; set; } = true;
+
+    public bool CanResize { get; set; }
 }

src/Ursa/Controls/Dialog/Options/OverlayDialogOptions.cs

@@ -62,4 +62,6 @@ public class OverlayDialogOptions
     ///     id.
     /// </summary>
     public int? TopLevelHashCode { get; set; }
+    
+    public bool CanResize { get; set; }
 }

src/Ursa/Controls/Dialog/OverlayDialog.cs

@@ -204,6 +204,7 @@ public static class OverlayDialog
             options.VerticalAnchor == VerticalPosition.Center ? null : options.VerticalOffset;
         control.IsCloseButtonVisible = options.IsCloseButtonVisible;
         control.CanLightDismiss = options.CanLightDismiss;
+        control.CanResize = options.CanResize;
         DialogControlBase.SetCanDragMove(control, options.CanDragMove);
     }
     
@@ -229,6 +230,7 @@ public static class OverlayDialog
         control.Title = options.Title;
         control.CanLightDismiss = options.CanLightDismiss;
         control.IsCloseButtonVisible = options.IsCloseButtonVisible;
+        control.CanResize = options.CanResize;
         DialogControlBase.SetCanDragMove(control, options.CanDragMove);
     }