Add liveview Salvo integration (#538)

packages/liveview/examples/salvo.rs

@@ -0,0 +1,55 @@
+#[cfg(not(feature = "salvo"))]
+fn main() {}
+
+#[cfg(feature = "salvo")]
+#[tokio::main]
+async fn main() {
+    use std::sync::Arc;
+
+    use dioxus_core::{Element, LazyNodes, Scope};
+    use dioxus_liveview as liveview;
+    use dioxus_liveview::Liveview;
+    use salvo::extra::affix;
+    use salvo::extra::ws::WsHandler;
+    use salvo::prelude::*;
+
+    fn app(cx: Scope) -> Element {
+        cx.render(LazyNodes::new(|f| f.text(format_args!("hello world!"))))
+    }
+
+    pretty_env_logger::init();
+
+    let addr = ([127, 0, 0, 1], 3030);
+
+    // todo: compactify this routing under one liveview::app method
+    let view = liveview::new(addr);
+    let router = Router::new()
+        .hoop(affix::inject(Arc::new(view)))
+        .get(index)
+        .push(Router::with_path("app").get(connect));
+    Server::new(TcpListener::bind(addr)).serve(router).await;
+
+    #[handler]
+    fn index(depot: &mut Depot, res: &mut Response) {
+        let view = depot.obtain::<Arc<Liveview>>().unwrap();
+        let body = view.body("<title>Dioxus LiveView</title>");
+        res.render(Text::Html(body));
+    }
+
+    #[handler]
+    async fn connect(
+        req: &mut Request,
+        depot: &mut Depot,
+        res: &mut Response,
+    ) -> Result<(), StatusError> {
+        let view = depot.obtain::<Arc<Liveview>>().unwrap().clone();
+        let fut = WsHandler::new().handle(req, res)?;
+        let fut = async move {
+            if let Some(ws) = fut.await {
+                view.upgrade_salvo(ws, app).await;
+            }
+        };
+        tokio::task::spawn(fut);
+        Ok(())
+    }
+}