From 8ee920bde479cf280b4c549fc79a7c0bbf36efd6 Mon Sep 17 00:00:00 2001
From: rabbitism <popmessiah@hotmail.com>
Date: Mon, 7 Oct 2024 17:53:41 +0800
Subject: [PATCH 1/2] feat: add CanClose hook to easily block window closing.

---
 demo/Ursa.Demo/Views/MainWindow.axaml.cs |  7 +++++++
 src/Ursa/Windows/UrsaWindow.cs           | 20 ++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/demo/Ursa.Demo/Views/MainWindow.axaml.cs b/demo/Ursa.Demo/Views/MainWindow.axaml.cs
index f5b4304d..4ed6d7c6 100644
--- a/demo/Ursa.Demo/Views/MainWindow.axaml.cs
+++ b/demo/Ursa.Demo/Views/MainWindow.axaml.cs
@@ -1,3 +1,4 @@
+using System.Threading.Tasks;
 using Ursa.Controls;
 
 namespace Ursa.Demo.Views;
@@ -8,4 +9,10 @@ public MainWindow()
     {
         InitializeComponent();
     }
+
+    protected override async Task<bool> CanClose()
+    {
+        var result = await MessageBox.ShowOverlayAsync("Are you sure you want to exit?", "Exit", button: MessageBoxButton.YesNo);
+        return result == MessageBoxResult.Yes;
+    }
 }
\ No newline at end of file
diff --git a/src/Ursa/Windows/UrsaWindow.cs b/src/Ursa/Windows/UrsaWindow.cs
index a6be365e..17194933 100644
--- a/src/Ursa/Windows/UrsaWindow.cs
+++ b/src/Ursa/Windows/UrsaWindow.cs
@@ -1,3 +1,4 @@
+using System.ComponentModel;
 using Avalonia;
 using Avalonia.Controls;
 
@@ -100,5 +101,24 @@ public Thickness TitleBarMargin
         set => SetValue(TitleBarMarginProperty, value);
     }
     
+    protected virtual async Task<bool> CanClose()
+    {
+        return await Task.FromResult(true);
+    }
     
+    private bool _canClose = false;
+    protected override async void OnClosing(WindowClosingEventArgs e)
+    {
+        VerifyAccess();
+        if (!_canClose)
+        {
+            e.Cancel = true;
+            _canClose = await CanClose();
+            if (_canClose)
+            {
+                Close();
+            }
+        }
+        base.OnClosing(e);
+    }
 }
\ No newline at end of file

From 37c16e2080ddd290d6283e37e14af6c2ee0d2483 Mon Sep 17 00:00:00 2001
From: rabbitism <popmessiah@hotmail.com>
Date: Mon, 7 Oct 2024 18:10:56 +0800
Subject: [PATCH 2/2] feat: temporary add both Chinese and English in demo
 message.

---
 demo/Ursa.Demo/Views/MainWindow.axaml.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/demo/Ursa.Demo/Views/MainWindow.axaml.cs b/demo/Ursa.Demo/Views/MainWindow.axaml.cs
index 4ed6d7c6..3edd6fe3 100644
--- a/demo/Ursa.Demo/Views/MainWindow.axaml.cs
+++ b/demo/Ursa.Demo/Views/MainWindow.axaml.cs
@@ -12,7 +12,7 @@ public MainWindow()
 
     protected override async Task<bool> CanClose()
     {
-        var result = await MessageBox.ShowOverlayAsync("Are you sure you want to exit?", "Exit", button: MessageBoxButton.YesNo);
+        var result = await MessageBox.ShowOverlayAsync("Are you sure you want to exit?\n您确定要退出吗？", "Exit", button: MessageBoxButton.YesNo);
         return result == MessageBoxResult.Yes;
     }
 }
\ No newline at end of file