Using the base class wxHAS_NATIVE_ENABLED_MANAGEMENT in Cocoa

disabling/enabling child windows

Fixes #16232, fixes #15495.

(this is a backport of 91f25e0 from master)

include/wx/osx/cocoa/private.h

@@ -260,6 +260,7 @@ public :
     void            RestoreWindowLevel();
     
     static WX_NSResponder GetNextFirstResponder() ;
+    static WX_NSResponder GetFormerFirstResponder() ;
 protected :
     CGWindowLevel   m_macWindowLevel;
     WXWindow        m_macWindow;

src/osx/cocoa/nonownedwnd.mm

@@ -145,6 +145,7 @@ bool shouldHandleSelector(SEL selector)
 //
 
 static NSResponder* s_nextFirstResponder = NULL;
+static NSResponder* s_formerFirstResponder = NULL;
 
 @interface wxNSWindow : NSWindow
 {
@@ -210,9 +211,13 @@ static NSResponder* s_nextFirstResponder = NULL;
 
 - (BOOL)makeFirstResponder:(NSResponder *)aResponder
 {
+    NSResponder* tempFormer = s_formerFirstResponder;
+    NSResponder* tempNext = s_nextFirstResponder;
     s_nextFirstResponder = aResponder;
+    s_formerFirstResponder = [[NSApp keyWindow] firstResponder];
     BOOL retval = [super makeFirstResponder:aResponder];
-    s_nextFirstResponder = nil;
+    s_nextFirstResponder = tempNext;
+    s_formerFirstResponder = tempFormer;
     return retval;
 }
 
@@ -1066,6 +1071,10 @@ WX_NSResponder wxNonOwnedWindowCocoaImpl::GetNextFirstResponder()
     return s_nextFirstResponder;
 }
 
+WX_NSResponder wxNonOwnedWindowCocoaImpl::GetFormerFirstResponder()
+{
+    return s_formerFirstResponder;
+}
 
 //
 //