ObjC Helpers: Ensure that all methods accept mandatory "self" and "selector" arguments

modules/juce_audio_processors/juce_audio_processors.cpp

@@ -160,17 +160,17 @@ private:
         static BOOL isFlipped (id, SEL) { return YES; }
         static BOOL isOpaque  (id, SEL) { return YES; }
 
-        static void nudge (NSView* self)
+        static void nudge (id self)
         {
             if (auto* owner = getIvar<NSViewComponentWithParent*> (self, "owner"))
                 if (owner->wantsNudge == WantsNudge::yes)
                     owner->triggerAsyncUpdate();
         }
 
-        static void viewDidUnhide (NSView* self, SEL)               { nudge (self); }
-        static void didAddSubview (NSView* self, SEL, NSView*)      { nudge (self); }
-        static void viewDidMoveToSuperview (NSView* self, SEL)      { nudge (self); }
-        static void viewDidMoveToWindow (NSView* self, SEL)         { nudge (self); }
+        static void viewDidUnhide (id self, SEL)               { nudge (self); }
+        static void didAddSubview (id self, SEL, NSView*)      { nudge (self); }
+        static void viewDidMoveToSuperview (id self, SEL)      { nudge (self); }
+        static void viewDidMoveToWindow (id self, SEL)         { nudge (self); }
     };
 
     static FlippedNSView& getViewClass()

modules/juce_core/native/juce_mac_ObjCHelpers.h

@@ -384,9 +384,9 @@ struct ObjCClass
     }
 
     template <typename Result, typename... Args>
-    void addMethod (SEL selector, Result (*callbackFn) (Args...))
+    void addMethod (SEL selector, Result (*callbackFn) (id, SEL, Args...))
     {
-        const auto s = detail::makeCompileTimeStr (@encode (Result), @encode (Args)...);
+        const auto s = detail::makeCompileTimeStr (@encode (Result), @encode (id), @encode (SEL), @encode (Args)...);
         const auto b = class_addMethod (cls, selector, (IMP) callbackFn, s.data());
         jassertquiet (b);
     }