From aadc2effe0af8cf938aa6ff0e9d79ec340bb0182 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Fri, 1 May 2020 14:47:36 -0300
Subject: [PATCH] borderless windows will close.

---
 native/Avalonia.Native/src/OSX/window.mm | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/window.mm b/native/Avalonia.Native/src/OSX/window.mm
index 46648a7998..8a1367486d 100644
--- a/native/Avalonia.Native/src/OSX/window.mm
+++ b/native/Avalonia.Native/src/OSX/window.mm
@@ -1273,6 +1273,20 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
     }
 }
 
+- (void)performClose:(id)sender
+{
+    if([[self delegate] respondsToSelector:@selector(windowShouldClose:)])
+    {
+        if(![[self delegate] windowShouldClose:self]) return;
+    }
+    else if([self respondsToSelector:@selector(windowShouldClose:)])
+    {
+        if(![self windowShouldClose:self]) return;
+    }
+    
+    [self close];
+}
+
 - (void)pollModalSession:(nonnull NSModalSession)session
 {
     auto response = [NSApp runModalSession:session];