Implement PerformanceNavigation interface

components/script/dom/performancenavigation.rs

@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use crate::dom::bindings::codegen::Bindings::PerformanceNavigationBinding::{
+    self, PerformanceNavigationConstants, PerformanceNavigationMethods,
+};
+use crate::dom::bindings::codegen::Bindings::WindowBinding::WindowBinding::WindowMethods;
+use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::globalscope::GlobalScope;
+use dom_struct::dom_struct;
+
+#[dom_struct]
+pub struct PerformanceNavigation {
+    reflector_: Reflector,
+}
+
+impl PerformanceNavigation {
+    fn new_inherited() -> PerformanceNavigation {
+        PerformanceNavigation {
+            reflector_: Reflector::new(),
+        }
+    }
+
+    pub fn new(global: &GlobalScope) -> DomRoot<PerformanceNavigation> {
+        reflect_dom_object(
+            Box::new(PerformanceNavigation::new_inherited()),
+            global,
+            PerformanceNavigationBinding::Wrap,
+        )
+    }
+}
+
+impl PerformanceNavigationMethods for PerformanceNavigation {
+    // https://w3c.github.io/navigation-timing/#dom-performancenavigation-type
+    fn Type(&self) -> u16 {
+        PerformanceNavigationConstants::TYPE_NAVIGATE
+    }
+
+    // https://w3c.github.io/navigation-timing/#dom-performancenavigation-redirectcount
+    fn RedirectCount(&self) -> u16 {
+        self.global().as_window().Document().get_redirect_count()
+    }
+}