fix(macos): do not trigger unsupported key feedback sound on keypress (…

…#742)

Ref tauri-apps/tauri#2626

.changes/macos-key-feedback.md

@@ -0,0 +1,5 @@
+---
+"wry": patch
+---
+
+Keypress on non-input element no longer triggers unsupported key feedback sound.

examples/custom_protocol.rs

@@ -31,7 +31,7 @@ fn main() -> wry::Result<()> {
       // Read the file content from file path
       let content = read(canonicalize(PathBuf::from("examples").join(
         if path == &"/" {
-          "index.html"
+          "custom_protocol_page1.html"
         } else {
           // remove leading slash
           &path[1..]

src/webview/wkwebview/mod.rs

@@ -663,10 +663,26 @@ r#"Object.defineProperty(window, 'ipc', {
       // Inject the web view into the window as main content
       #[cfg(target_os = "macos")]
       {
+        let parent_view_cls = match ClassDecl::new("WryWebViewParent", class!(NSView)) {
+          Some(mut decl) => {
+            decl.add_method(
+              sel!(keyDown:),
+              key_down as extern "C" fn(&mut Object, Sel, id),
+            );
+
+            extern "C" fn key_down(_this: &mut Object, _sel: Sel, _event: id) {
+              // do nothing; this prevents macOS from playing an unsupported key feedback sound
+            }
+
+            decl.register()
+          }
+          None => class!(NSView),
+        };
+
         // Create a view to contain the webview, without it devtools will try to
         // inject a subview into the frame causing an obnoxious warning.
         // See https://github.com/tauri-apps/wry/issues/273
-        let parent_view: id = msg_send![class!(NSView), alloc];
+        let parent_view: id = msg_send![parent_view_cls, alloc];
         let _: () = msg_send![parent_view, init];
         parent_view.setAutoresizingMask_(NSViewHeightSizable | NSViewWidthSizable);
         let _: () = msg_send![parent_view, addSubview: webview];