1 files changed, 30 insertions, 0 deletions
diff --git a/osdep/macOS_swift_extensions.swift b/osdep/macOS_swift_extensions.swift
index 61e61aaffd..14d217f589 100644
--- a/osdep/macOS_swift_extensions.swift
+++ b/osdep/macOS_swift_extensions.swift
@@ -25,4 +25,34 @@ extension NSScreen {
         }
     }
 
+    public var displayName: String? {
+        get {
+            var name: String? = nil
+            var object: io_object_t
+            var iter = io_iterator_t()
+            let matching = IOServiceMatching("IODisplayConnect")
+            let result = IOServiceGetMatchingServices(kIOMasterPortDefault, matching, &iter)
+
+            if result != KERN_SUCCESS || iter == 0 { return nil }
+
+            repeat {
+                object = IOIteratorNext(iter)
+                let info = IODisplayCreateInfoDictionary(object, IOOptionBits(kIODisplayOnlyPreferredName)).takeRetainedValue() as! [String:AnyObject]
+                if (info[kDisplayVendorID] as? UInt32 == CGDisplayVendorNumber(displayID) &&
+                    info[kDisplayProductID] as? UInt32 == CGDisplayModelNumber(displayID) &&
+                    info[kDisplaySerialNumber] as? UInt32 ?? 0 == CGDisplaySerialNumber(displayID))
+                {
+                    if let productNames = info["DisplayProductName"] as? [String:String],
+                       let productName = productNames.first?.value
+                    {
+                        name = productName
+                        break
+                    }
+                }
+            } while object != 0
+
+            IOObjectRelease(iter)
+            return name
+        }
+    }
 }