feat(macos): use WKWebView's inspectable property (#923)

Ref tauri-apps/tauri#6658

.changes/inspector-ios-16.4-macos-13.3.md

@@ -0,0 +1,5 @@
+---
+"wry": patch
+---
+
+Use the new WKWebView `inspectable` property if available (iOS 16.4, macOS 13.3).

src/webview/wkwebview/mod.rs

@@ -308,14 +308,6 @@ impl InnerWebView {
       #[cfg(target_os = "macos")]
       (*webview).set_ivar(ACCEPT_FIRST_MOUSE, attributes.accept_first_mouse);
 
-      #[cfg(any(debug_assertions, feature = "devtools"))]
-      if attributes.devtools {
-        // Equivalent Obj-C:
-        // [[config preferences] setValue:@YES forKey:@"developerExtrasEnabled"];
-        let dev = NSString::new("developerExtrasEnabled");
-        let _: id = msg_send![_preference, setValue:_yes forKey:dev];
-      }
-
       let _: id = msg_send![_preference, setValue:_yes forKey:NSString::new("allowsPictureInPictureMediaPlayback")];
 
       if attributes.autoplay {
@@ -360,6 +352,18 @@ impl InnerWebView {
         let _: () = msg_send![scroll, setBounces: NO];
       }
 
+      #[cfg(any(debug_assertions, feature = "devtools"))]
+      if attributes.devtools {
+        let has_inspectable_property: BOOL =
+          msg_send![webview, respondsToSelector: sel!(setInspectable:)];
+        if has_inspectable_property == YES {
+          let _: () = msg_send![webview, setInspectable: YES];
+        }
+        // this cannot be on an `else` statement, it does not work on macOS :(
+        let dev = NSString::new("developerExtrasEnabled");
+        let _: id = msg_send![_preference, setValue:_yes forKey:dev];
+      }
+
       // allowsBackForwardNavigation
       #[cfg(target_os = "macos")]
       {