add Outlet component

packages/router/src/utils/use_router_internal.rs

@@ -0,0 +1,30 @@
+use std::sync::Arc;
+
+use dioxus::prelude::ScopeState;
+use dioxus_router_core::RouterMessage;
+
+use crate::contexts::router::RouterContext;
+
+/// A private hook to subscribe to the router.
+///
+/// Used to reduce redundancy within other components/hooks. Safe to call multiple times for a
+/// single component, but not recommended. Multiple subscriptions will be discarded.
+///
+/// # Return values
+/// - [`None`], when the current component isn't a descendant of a [`use_router`] component.
+/// - Otherwise [`Some`].
+///
+/// [`use_router`]: crate::hooks::use_router
+pub(crate) fn use_router_internal<'a>(cx: &'a ScopeState) -> &'a mut Option<RouterContext> {
+    let id = cx.use_hook(|| Arc::new(cx.scope_id()));
+
+    cx.use_hook(|| {
+        let router = cx.consume_context::<RouterContext>()?;
+
+        let _ = router
+            .sender
+            .unbounded_send(RouterMessage::Subscribe(id.clone()));
+
+        Some(router)
+    })
+}