add `comp()` and default failure components

packages/router/src/components/default_errors.rs

@@ -0,0 +1,59 @@
+use crate::components::Link;
+use dioxus::prelude::*;
+use dioxus_router_core::prelude::{named, RootIndex};
+
+#[allow(non_snake_case)]
+pub fn FailureExternalNavigation(cx: Scope) -> Element {
+    todo!("add href to FailureExternalNavigation link");
+
+    render! {
+        h1 { "External Navigation Failure!" }
+        p {
+            "The application tried to programmatically navigate to an external page. This "
+            "operation has failed. Click the link below to complete the navigation manually."
+        }
+        a {
+            "Click here to fix the failure."
+        }
+    }
+}
+
+#[allow(non_snake_case)]
+pub fn FailureNamedNavigation(cx: Scope) -> Element {
+    render! {
+        h1 { "Named Navigation Failure!" }
+        p {
+            "The application has tried to navigate to an unknown name. This is a bug. Please "
+            "inform the developer, so they can fix it."
+            b { "Thank you!" }
+        }
+        p {
+            "We are sorry for the inconvenience. The link below may help to fix the problem, but "
+            "there is no guarantee."
+        }
+        Link {
+            target: named::<RootIndex>(),
+            "Click here to try to fix the failure."
+        }
+    }
+}
+
+#[allow(non_snake_case)]
+pub fn FailureRedirectionLimit(cx: Scope) -> Element {
+    render! {
+        h1 { "Redirection Limit Failure!" }
+        p {
+            "The application seems to have entered into an endless redirection loop. This is a "
+            "bug. Please inform the developer, so they can fix it."
+            b { "Thank you!" }
+        }
+        p {
+            "We are sorry for the inconvenience. The link below may help to fix the problem, but "
+            "there is no guarantee."
+        }
+        Link {
+            target: named::<RootIndex>(),
+            "Click here to try to fix the failure."
+        }
+    }
+}

packages/router/src/hooks/use_router.rs

@@ -6,7 +6,15 @@ use dioxus_router_core::{
     RouterService, RouterState, RoutingCallback,
 };
 
-use crate::contexts::router::RouterContext;
+use crate::{
+    contexts::router::RouterContext,
+    prelude::{
+        comp,
+        default_errors::{
+            FailureExternalNavigation, FailureNamedNavigation, FailureRedirectionLimit,
+        },
+    },
+};
 
 pub fn use_router<'a>(
     cx: &'a ScopeState,
@@ -70,9 +78,9 @@ pub struct RouterConfiguration {
 impl Default for RouterConfiguration {
     fn default() -> Self {
         Self {
-            failure_external_navigation: todo!("provide default component for external navigation"),
-            failure_named_navigation: todo!("provide default component for named navigation"),
-            failure_redirection_limit: todo!("provide default component for redirection limit"),
+            failure_external_navigation: comp(FailureExternalNavigation),
+            failure_named_navigation: comp(FailureNamedNavigation),
+            failure_redirection_limit: comp(FailureRedirectionLimit),
             history: Box::new(MemoryHistory::default()),
             on_update: None,
             synchronous: false,

packages/router/src/lib.rs

@@ -1,4 +1,6 @@
 pub mod components {
+    pub(crate) mod default_errors;
+
     mod link;
     pub use link::*;
 
@@ -17,6 +19,14 @@ pub mod hooks {
 
 pub mod prelude {
     pub use dioxus_router_core::prelude::*;
+
+    pub use crate::components::*;
+    pub use crate::hooks::*;
+
+    use dioxus::core::Component;
+    pub fn comp(component: Component) -> ContentAtom<Component> {
+        ContentAtom(component)
+    }
 }
 
 mod utils {