From 84a7d31f180f3fe5d88f08ad6e2a1b7fc04dff84 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Thu, 2 Jun 2022 16:30:50 +0100
Subject: [PATCH] Merge pull request #8248 from
 AvaloniaUI/fixes/prevent-parent-resizing-when-modal-opened

[OSX] dont allow disabled windows to resize.
---
 native/Avalonia.Native/src/OSX/WindowImpl.h  | 1 +
 native/Avalonia.Native/src/OSX/WindowImpl.mm | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/native/Avalonia.Native/src/OSX/WindowImpl.h b/native/Avalonia.Native/src/OSX/WindowImpl.h
index 76d5cbf6ea..627e29c03d 100644
--- a/native/Avalonia.Native/src/OSX/WindowImpl.h
+++ b/native/Avalonia.Native/src/OSX/WindowImpl.h
@@ -13,6 +13,7 @@
 class WindowImpl : public virtual WindowBaseImpl, public virtual IAvnWindow, public IWindowStateChanged
 {
 private:
+    bool _isEnabled;
     bool _canResize;
     bool _fullScreenActive;
     SystemDecorations _decorations;
diff --git a/native/Avalonia.Native/src/OSX/WindowImpl.mm b/native/Avalonia.Native/src/OSX/WindowImpl.mm
index 555e9dff9b..3c2224876a 100644
--- a/native/Avalonia.Native/src/OSX/WindowImpl.mm
+++ b/native/Avalonia.Native/src/OSX/WindowImpl.mm
@@ -10,6 +10,7 @@
 #include "WindowProtocol.h"
 
 WindowImpl::WindowImpl(IAvnWindowEvents *events, IAvnGlContext *gl) : WindowBaseImpl(events, gl) {
+    _isEnabled = true;
     _children = std::list<WindowImpl*>();
     _isClientAreaExtended = false;
     _extendClientHints = AvnDefaultChrome;
@@ -76,7 +77,9 @@ HRESULT WindowImpl::SetEnabled(bool enable) {
     START_COM_CALL;
 
     @autoreleasepool {
+        _isEnabled = enable;
         [GetWindowProtocol() setEnabled:enable];
+        UpdateStyle();
         return S_OK;
     }
 }
@@ -574,7 +577,7 @@ NSWindowStyleMask WindowImpl::GetStyle() {
         case SystemDecorationsFull:
             s = s | NSWindowStyleMaskTitled | NSWindowStyleMaskClosable;
 
-            if (_canResize) {
+            if (_canResize && _isEnabled) {
                 s = s | NSWindowStyleMaskResizable;
             }
             break;