More cleanup work

packages/desktop/src/menubar.rs

@@ -0,0 +1,58 @@
+use muda::{Menu, MenuItem, PredefinedMenuItem, Submenu};
+use tao::window::Window;
+
+pub fn build_menu_bar(menu: Menu, window: &Window) {
+    #[cfg(target_os = "windows")]
+    menu.init_for_hwnd(window_hwnd);
+
+    #[cfg(target_os = "linux")]
+    menu.init_for_gtk_window(&gtk_window, Some(&vertical_gtk_box));
+
+    #[cfg(target_os = "macos")]
+    menu.init_for_nsapp();
+}
+
+/// Builds a standard menu bar depending on the users platform. It may be used as a starting point
+/// to further customize the menu bar and pass it to a [`WindowBuilder`](tao::window::WindowBuilder).
+/// > Note: The default menu bar enables macOS shortcuts like cut/copy/paste.
+/// > The menu bar differs per platform because of constraints introduced
+/// > by [`MenuItem`](tao::menu::MenuItem).
+pub fn build_default_menu_bar() -> Menu {
+    let menu = Menu::new();
+
+    // since it is uncommon on windows to have an "application menu"
+    // we add a "window" menu to be more consistent across platforms with the standard menu
+    let window_menu = Submenu::new("Window", true);
+    window_menu
+        .append_items(&[
+            &PredefinedMenuItem::fullscreen(None),
+            &PredefinedMenuItem::separator(),
+            &PredefinedMenuItem::hide(None),
+            &PredefinedMenuItem::hide_others(None),
+            &PredefinedMenuItem::show_all(None),
+            &PredefinedMenuItem::maximize(None),
+            &PredefinedMenuItem::minimize(None),
+            &PredefinedMenuItem::close_window(None),
+            &PredefinedMenuItem::separator(),
+            &PredefinedMenuItem::quit(None),
+        ])
+        .unwrap();
+
+    let edit_menu = Submenu::new("Window", true);
+    edit_menu
+        .append_items(&[
+            &PredefinedMenuItem::undo(None),
+            &PredefinedMenuItem::redo(None),
+            &PredefinedMenuItem::separator(),
+            &PredefinedMenuItem::cut(None),
+            &PredefinedMenuItem::copy(None),
+            &PredefinedMenuItem::paste(None),
+            &PredefinedMenuItem::separator(),
+            &PredefinedMenuItem::select_all(None),
+        ])
+        .unwrap();
+
+    menu.append_items(&[&window_menu, &edit_menu]).unwrap();
+
+    menu
+}