Flip totally to a libadwaita program

Cargo.lock

@@ -1348,6 +1348,7 @@ dependencies = [
  "gtk4",
  "image",
  "kifu-core",
+ "libadwaita",
  "sgf",
  "tokio",
 ]

kifu/gtk/Cargo.toml

@@ -9,6 +9,7 @@ screenplay = []
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+adw         = { version = "0.4", package = "libadwaita", features = [ "v1_2" ] }
 cairo-rs    = { version = "0.17" }
 gio         = { version = "0.17" }
 glib        = { version = "0.17" }

kifu/gtk/src/main.rs

@@ -1,3 +1,4 @@
+use adw::prelude::AdwApplicationWindowExt;
 use gtk::prelude::*;
 use kifu_core::{CoreApp, CoreRequest, CoreResponse};
 use kifu_gtk::{
@@ -7,14 +8,14 @@ use kifu_gtk::{
 };
 use std::sync::{Arc, RwLock};
 
-fn handle_response(api: CoreApi, window: gtk::ApplicationWindow, message: CoreResponse) {
+fn handle_response(api: CoreApi, window: adw::ApplicationWindow, message: CoreResponse) {
     let playing_field = Arc::new(RwLock::new(None));
     match message {
         CoreResponse::HomeView(view) => perftrace("HomeView", || {
             let api = api.clone();
 
             let home = Home::new(api, view);
-            window.set_child(Some(&home));
+            window.set_content(Some(&home));
         }),
         CoreResponse::PlayingFieldView(view) => perftrace("PlayingFieldView", || {
             let api = api.clone();
@@ -23,7 +24,7 @@ fn handle_response(api: CoreApi, window: gtk::ApplicationWindow, message: CoreRe
             if playing_field.is_none() {
                 perftrace("creating a new playing field", || {
                     let field = PlayingField::new(api, view);
-                    window.set_child(Some(&field));
+                    window.set_content(Some(&field));
                     *playing_field = Some(field);
                 })
             } else {
@@ -65,10 +66,25 @@ fn main() {
         }
     });
 
-    let app = gtk::Application::builder()
+    let app = adw::Application::builder()
         .application_id("com.luminescent-dreams.kifu-gtk")
+        .resource_base_path("/com/luminescent-dreams/kifu-gtk")
         .build();
 
+    let action_config = gio::SimpleAction::new("show-config", None);
+    action_config.connect_activate(|_, _| {
+        println!("trigger the configuration menu");
+    });
+    app.add_action(&action_config);
+
+    app.connect_startup(|app| {
+        println!("connect_startup");
+        let menu_model = gio::Menu::new();
+        menu_model.append(Some("Quit"), None);
+        menu_model.append(Some("Configuration"), Some("show-config"));
+        app.set_menubar(Some(&menu_model));
+    });
+
     app.connect_activate({
         let runtime = runtime.clone();
         move |app| {
@@ -81,9 +97,11 @@ fn main() {
                 core: core.clone(),
             };
 
-            let window = gtk::ApplicationWindow::new(app);
+            let window = adw::ApplicationWindow::new(app);
             window.present();
 
+            window.set_show_menubar(true);
+
             gtk_rx.attach(None, {
                 let api = api.clone();
                 move |message| {