From 09e019648ac4ff0bd6b2f907ed1636d34e6bab9c Mon Sep 17 00:00:00 2001
From: emeraldsingers <zonal9999999@gmail.com>
Date: Thu, 6 Aug 2026 14:32:37 +0300
Subject: [PATCH] fix: prevent duplicate package manager windows

---
 OpenUtau/Views/MainWindow.axaml.cs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/OpenUtau/Views/MainWindow.axaml.cs b/OpenUtau/Views/MainWindow.axaml.cs
index e895c1d5a..b1d1746ec 100644
--- a/OpenUtau/Views/MainWindow.axaml.cs
+++ b/OpenUtau/Views/MainWindow.axaml.cs
@@ -610,9 +610,20 @@ async void OnMenuInstallSinger(object sender, RoutedEventArgs args) {
 
         void OnMenuPackageManager(object sender, RoutedEventArgs args) {
             try {
-                var dialog = new PackageManagerDialog() { DataContext = new PackageManagerViewModel() };
-                dialog.Show();
+                var desktop = Application.Current?.ApplicationLifetime as IClassicDesktopStyleApplicationLifetime;
+                if (desktop == null) {
+                    return;
+                }
+                var dialog = desktop.Windows.FirstOrDefault(w => w is PackageManagerDialog) as PackageManagerDialog;
+                if (dialog == null) {
+                    dialog = new PackageManagerDialog() { DataContext = new PackageManagerViewModel() };
+                }
                 if (dialog.Position.Y < 0) dialog.Position = dialog.Position.WithY(0);
+                if (dialog.WindowState == WindowState.Minimized) {
+                    dialog.WindowState = WindowState.Normal;
+                }
+                dialog.Show();
+                dialog.Activate();
             } catch (Exception e) {
                 DocManager.Inst.ExecuteCmd(new ErrorMessageNotification(e));
             }