gpui: Add middle and right click mouse events for macOS (#49637)

Gustaf Johansson and MrSubidubi created 1 week ago

- [x] Added a solid test coverage and/or screenshots from doing manual
testing
  Manual testing performed successfully on Tahoe 26.2.
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Fixed missing right- and middle-mouse button drag on MacOS

Co-authored-by: MrSubidubi <finn@zed.dev>

Change summary

crates/gpui_macos/src/window.rs | 8 ++++++++
1 file changed, 8 insertions(+)

Detailed changes

crates/gpui_macos/src/window.rs 🔗

@@ -188,6 +188,14 @@ unsafe fn build_classes() {
                     sel!(mouseDragged:),
                     handle_view_event as extern "C" fn(&Object, Sel, id),
                 );
+                decl.add_method(
+                    sel!(rightMouseDragged:),
+                    handle_view_event as extern "C" fn(&Object, Sel, id),
+                );
+                decl.add_method(
+                    sel!(otherMouseDragged:),
+                    handle_view_event as extern "C" fn(&Object, Sel, id),
+                );
                 decl.add_method(
                     sel!(scrollWheel:),
                     handle_view_event as extern "C" fn(&Object, Sel, id),