Add implementation of NSUserInterfaceItemIdentifier to NSView

Headers/AppKit/NSView.h

@@ -37,6 +37,7 @@
 #import <AppKit/NSAppearance.h>
 #import <AppKit/NSGraphicsContext.h>
 #import <AppKit/NSResponder.h>
+#import <AppKit/NSUserInterfaceItemIdentification.h>
 #import <AppKit/NSUserInterfaceLayout.h>
 #import <AppKit/NSLayoutConstraint.h>
 
@@ -130,7 +131,7 @@ extern const CGFloat NSViewNoInstrinsicMetric;
 extern const CGFloat NSViewNoIntrinsicMetric;
 
 APPKIT_EXPORT_CLASS
-@interface NSView : NSResponder <NSAppearanceCustomization>
+@interface NSView : NSResponder <NSAppearanceCustomization, NSUserInterfaceItemIdentification>
 {
   NSRect _frame;
   NSRect _bounds;
@@ -197,6 +198,7 @@ PACKAGE_SCOPE
   NSRect _autoresizingFrameError;
   NSShadow *_shadow;
   NSAppearance* _appearance;
+  NSUserInterfaceItemIdentifier _identifier;
 }
 
 /*

Source/NSView.m

@@ -5281,6 +5281,16 @@ static NSView* findByTag(NSView *view, NSInteger aTag, NSUInteger *level)
   }
 }
 
+- (void) setIdentifier: (NSUserInterfaceItemIdentifier) identifier
+{
+  ASSIGN(_identifier, identifier);
+}
+
+- (NSUserInterfaceItemIdentifier) identifier
+{
+  return _identifier;
+}
+
 @end
 
 #if OS_API_VERSION(MAC_OS_X_VERSION_10_7, GS_API_LATEST)