dont open multiple options

VerifyTests · Aug 8, 2021 · 95b422f · 95b422f
1 parent 96a1180
commit 95b422f
Showing 1 changed file with 18 additions and 1 deletion.
diff --git a/src/DiffEngineTray/Settings/OptionsFormLauncher.cs b/src/DiffEngineTray/Settings/OptionsFormLauncher.cs
@@ -5,13 +5,30 @@
 
 static class OptionsFormLauncher
 {
+    static OptionsForm? instance;
+    static EventHandler formOnClosed = Form_Closed;
+
     public static async Task Launch(KeyRegister keyRegister, Tracker tracker)
     {
+        if (instance != null)
+        {
+            instance.BringToFront();
+            return;
+        }
+
         var settings = await SettingsHelper.Read();
-        using var form = new OptionsForm(settings, async newSettings => await Save(keyRegister, tracker, newSettings));
+        using var form = new OptionsForm(settings, newSettings => Save(keyRegister, tracker, newSettings));
+        instance = form;
+        form.Closed += formOnClosed;
         form.ShowDialog();
     }
 
+    static void Form_Closed(object? sender, EventArgs e)
+    {
+        instance!.Closed -= formOnClosed;
+        instance = null;
+    }
+
     static async Task<IReadOnlyList<string>> Save(KeyRegister keyRegister, Tracker tracker, Settings settings)
     {
         if (!settings.IsValidate(out var errors))