Try setting up the GTK loop

kifu/kifu-gtk/src/main.rs

@@ -1,10 +1,14 @@
 use gtk::prelude::*;
-use kifu_core::CoreApp;
+use kifu_core::{CoreApp, Request, Response};
-use tokio::runtime::Runtime;
+use std::{
+    sync::{Arc, Mutex},
+    time::Duration,
+};
+use tokio::sync::mpsc::{Receiver, Sender};
 
 #[tokio::main]
 async fn main() {
-    let (core, _request_tx, _response_rx) = CoreApp::new();
+    let (mut core, request_tx, response_rx) = CoreApp::new();
     let core_handle = tokio::spawn(async move {
         core.run().await;
     });
@@ -14,9 +18,25 @@ async fn main() {
             .application_id("com.luminescent-dreams.kifu-gtk")
             .build();
 
-        app.connect_activate(|app| {
+        let _ = tokio::spawn({
+            let request_tx = request_tx.clone();
+            async move {
+                let _ = request_tx.send(Request::PlayingField).await;
+            }
+        });
+
+        app.connect_activate(move |app| {
+            let (gtk_tx, gtk_rx) =
+                gtk::glib::MainContext::channel::<Response>(gtk::glib::PRIORITY_DEFAULT);
+
+            let _ = tokio::task::spawn(connector(gtk_tx, response_rx));
+
             let window = gtk::ApplicationWindow::new(app);
             window.present();
+            gtk_rx.attach(None, |message| {
+                println!("message: {:?}", message);
+                Continue(true)
+            });
         });
 
         println!("running the gtk loop");
@@ -26,3 +46,13 @@ async fn main() {
     core_handle.await;
     gtk_handle.await;
 }
+
+async fn connector(gtk_tx: gtk::glib::Sender<Response>, mut response_rx: Receiver<Response>) {
+    loop {
+        let msg = response_rx.recv().await;
+        match msg {
+            Some(msg) => gtk_tx.send(msg).unwrap(),
+            None => (),
+        }
+    }
+}