From 80cd6632bd7ea8b6d3cb4a0e76c4fc3aab3bc3bb Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Thu, 25 Apr 2019 23:10:46 +0100
Subject: [PATCH] close menu if the toplevel menu item is clicked and its
 already opened.

makes behavior consistent with wpf.
---
 .../Platform/DefaultMenuInteractionHandler.cs       | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs b/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs
index 942104d61b..0badd918cc 100644
--- a/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs
+++ b/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs
@@ -336,7 +336,18 @@ namespace Avalonia.Controls.Platform
 
             if (e.MouseButton == MouseButton.Left && item?.HasSubMenu == true)
             {
-                Open(item, false);
+                if (item.IsSubMenuOpen)
+                {
+                    if (item.Parent is Menu)
+                    {
+                        CloseMenu(item);
+                    }
+                }
+                else
+                {
+                    Open(item, false);
+                }
+
                 e.Handled = true;
             }
         }