`ObjectiveC` Helper Class (#4286)

* `NativeMacOS` Helper Class

* Corrections

* Make CFString IDisposable

* Fix `openURL:`

* `dealloc` metal layer

* Remove releases

* Use NSString

* Update Ryujinx.Ui.Common/Helper/NativeMacOS.cs

Co-authored-by: merry <git@mary.rs>

* Programatically select updates in Finder

* Address feedback

* Feedback

* Ptr

* Fix whoopsie

* Ack suggestions

* Update Ryujinx.Ava/UI/Renderer/EmbeddedWindow.cs

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

* GDK Suggestions

---------

Co-authored-by: merry <git@mary.rs>
Co-authored-by: gdkchan <gab.dark.100@gmail.com>

2 files changed, 116 insertions, 2 deletions

diff --git a/Ryujinx.Ui.Common/Helper/ObjectiveC.cs b/Ryujinx.Ui.Common/Helper/ObjectiveC.cs
new file mode 100644
index 00000000..234f7597
--- /dev/null
+++ b/Ryujinx.Ui.Common/Helper/ObjectiveC.cs
@@ -0,0 +1,97 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+using System.Text;
+
+namespace Ryujinx.Ui.Common.Helper
+{
+    [SupportedOSPlatform("macos")]
+    public static partial class ObjectiveC
+    {
+        private const string ObjCRuntime = "/usr/lib/libobjc.A.dylib";
+
+        [LibraryImport(ObjCRuntime, StringMarshalling = StringMarshalling.Utf8)]
+        private static unsafe partial IntPtr sel_getUid(string name);
+
+        [LibraryImport(ObjCRuntime, StringMarshalling = StringMarshalling.Utf8)]
+        public static partial IntPtr objc_getClass(string name);
+
+        [LibraryImport(ObjCRuntime)]
+        public static partial void objc_msgSend(IntPtr receiver, Selector selector);
+
+        [LibraryImport(ObjCRuntime)]
+        public static partial void objc_msgSend(IntPtr receiver, Selector selector, byte value);
+
+        [LibraryImport(ObjCRuntime)]
+        public static partial void objc_msgSend(IntPtr receiver, Selector selector, IntPtr value);
+
+        [LibraryImport(ObjCRuntime)]
+        public static partial void objc_msgSend(IntPtr receiver, Selector selector, NSRect point);
+
+        [LibraryImport(ObjCRuntime)]
+        public static partial void objc_msgSend(IntPtr receiver, Selector selector, double value);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend")]
+        public static partial IntPtr IntPtr_objc_msgSend(IntPtr receiver, Selector selector);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend")]
+        public static partial IntPtr IntPtr_objc_msgSend(IntPtr receiver, Selector selector, IntPtr param);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend", StringMarshalling = StringMarshalling.Utf8)]
+        public static partial IntPtr IntPtr_objc_msgSend(IntPtr receiver, Selector selector, string param);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend")]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static partial bool bool_objc_msgSend(IntPtr receiver, Selector selector, IntPtr param);
+
+        public struct Selector
+        {
+            public readonly IntPtr SelPtr;
+
+            public unsafe Selector(string name)
+            {
+                SelPtr = sel_getUid(name);
+            }
+
+            public static implicit operator Selector(string value) => new(value);
+        }
+
+        public struct NSString
+        {
+            public readonly IntPtr StrPtr;
+
+            public NSString(string aString)
+            {
+                IntPtr nsString = objc_getClass("NSString");
+                StrPtr = IntPtr_objc_msgSend(nsString, "stringWithUTF8String:", aString);
+            }
+
+            public static implicit operator IntPtr(NSString nsString) => nsString.StrPtr;
+        }
+
+        public readonly struct NSPoint
+        {
+            public readonly double X;
+            public readonly double Y;
+
+            public NSPoint(double x, double y)
+            {
+                X = x;
+                Y = y;
+            }
+        }
+
+        public readonly struct NSRect
+        {
+            public readonly NSPoint Pos;
+            public readonly NSPoint Size;
+
+            public NSRect(double x, double y, double width, double height)
+            {
+                Pos = new NSPoint(x, y);
+                Size = new NSPoint(width, height);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.Ui.Common/Helper/OpenHelper.cs b/Ryujinx.Ui.Common/Helper/OpenHelper.cs
index 35534892..5b2e8663 100644
--- a/Ryujinx.Ui.Common/Helper/OpenHelper.cs
+++ b/Ryujinx.Ui.Common/Helper/OpenHelper.cs
@@ -55,7 +55,17 @@ namespace Ryujinx.Ui.Common.Helper
                 }
                 else if (OperatingSystem.IsMacOS())
                 {
-                    Process.Start("open", $"-R \"{path}\"");
+                    ObjectiveC.NSString nsStringPath = new(path);
+                    IntPtr nsUrl = ObjectiveC.objc_getClass("NSURL");
+                    var urlPtr = ObjectiveC.IntPtr_objc_msgSend(nsUrl, "fileURLWithPath:", nsStringPath);
+
+                    IntPtr nsArray = ObjectiveC.objc_getClass("NSArray");
+                    IntPtr urlArray = ObjectiveC.IntPtr_objc_msgSend(nsArray, "arrayWithObject:", urlPtr);
+
+                    IntPtr nsWorkspace = ObjectiveC.objc_getClass("NSWorkspace");
+                    IntPtr sharedWorkspace = ObjectiveC.IntPtr_objc_msgSend(nsWorkspace, "sharedWorkspace");
+
+                    ObjectiveC.objc_msgSend(sharedWorkspace, "activateFileViewerSelectingURLs:", urlArray);
                 }
                 else if (OperatingSystem.IsLinux())
                 {
@@ -84,7 +94,14 @@ namespace Ryujinx.Ui.Common.Helper
             }
             else if (OperatingSystem.IsMacOS())
             {
-                Process.Start("open", url);
+                ObjectiveC.NSString nsStringPath = new(url);
+                IntPtr nsUrl = ObjectiveC.objc_getClass("NSURL");
+                var urlPtr = ObjectiveC.IntPtr_objc_msgSend(nsUrl, "URLWithString:", nsStringPath);
+
+                IntPtr nsWorkspace = ObjectiveC.objc_getClass("NSWorkspace");
+                IntPtr sharedWorkspace = ObjectiveC.IntPtr_objc_msgSend(nsWorkspace, "sharedWorkspace");
+
+                ObjectiveC.bool_objc_msgSend(sharedWorkspace, "openURL:", urlPtr);
             }
             else
             {