iOS/macOS Accessibility: Tidy up shared value getter

modules/juce_gui_basics/native/accessibility/juce_ios_Accessibility.mm

@@ -341,6 +341,19 @@ private:
             return traits | sendSuperclassMessage<UIAccessibilityTraits> (self, @selector (accessibilityTraits));
         }
 
+        static NSString* getAccessibilityValue (id self, SEL)
+        {
+            if (auto* handler = getHandler (self))
+            {
+                if (handler->getCurrentState().isCheckable())
+                    return handler->getCurrentState().isChecked() ? @"1" : @"0";
+
+                return (NSString*) getAccessibilityValueFromInterfaces (*handler);
+            }
+
+            return nil;
+        }
+
         static void onFocusGain (id self, SEL)
         {
             if (auto* handler = getHandler (self))

modules/juce_gui_basics/native/accessibility/juce_mac_Accessibility.mm

@@ -283,6 +283,19 @@ private:
             return nil;
         }
 
+        static id getAccessibilityValue (id self, SEL)
+        {
+            if (auto* handler = getHandler (self))
+            {
+                if (handler->getCurrentState().isCheckable())
+                    return handler->getCurrentState().isChecked() ? @(1) : @(0);
+
+                return getAccessibilityValueFromInterfaces (*handler);
+            }
+
+            return nil;
+        }
+
         static NSArray* getAccessibilitySelectedChildren (id self, SEL)
         {
             return getSelectedChildren ([self accessibilityChildren]);

modules/juce_gui_basics/native/accessibility/juce_mac_AccessibilitySharedCode.mm

@@ -78,6 +78,17 @@ protected:
             && ! handler.getTextInterface()->isReadOnly();
     }
 
+    static id getAccessibilityValueFromInterfaces (const AccessibilityHandler& handler)
+    {
+        if (auto* textInterface = handler.getTextInterface())
+            return juceStringToNS (textInterface->getText ({ 0, textInterface->getTotalNumCharacters() }));
+
+        if (auto* valueInterface = handler.getValueInterface())
+            return juceStringToNS (valueInterface->getCurrentValueAsString());
+
+        return nil;
+    }
+
     //==============================================================================
     static BOOL getIsAccessibilityElement (id self, SEL)
     {
@@ -88,30 +99,6 @@ protected:
         return NO;
     }
 
-    static id getAccessibilityValue (id self, SEL)
-    {
-        if (auto* handler = getHandler (self))
-        {
-            if (auto* textInterface = handler->getTextInterface())
-                return juceStringToNS (textInterface->getText ({ 0, textInterface->getTotalNumCharacters() }));
-
-            if (handler->getCurrentState().isCheckable())
-            {
-                return handler->getCurrentState().isChecked()
-                          #if JUCE_IOS
-                           ? @"1" : @"0";
-                          #else
-                           ? @(1) : @(0);
-                          #endif
-            }
-
-            if (auto* valueInterface = handler->getValueInterface())
-                return juceStringToNS (valueInterface->getCurrentValueAsString());
-        }
-
-        return nil;
-    }
-
     static void setAccessibilityValue (id self, SEL, NSString* value)
     {
         if (auto* handler = getHandler (self))