Add Performance object to Window and implement Performance::Now()

src/components/script/dom/performancetiming.rs

@@ -0,0 +1,57 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::codegen::BindingDeclarations::PerformanceTimingBinding;
+use dom::bindings::js::{JSRef, Temporary};
+use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
+use dom::window::Window;
+
+#[deriving(Encodable)]
+pub struct PerformanceTiming {
+    pub reflector_: Reflector,
+    pub navigationStart: u64,
+    pub navigationStartPrecise: f64,
+}
+
+impl PerformanceTiming {
+    pub fn new_inherited(navStart: u64, navStartPrecise: f64)
+                         -> PerformanceTiming {
+        PerformanceTiming {
+            reflector_: Reflector::new(),
+            navigationStart: navStart,
+            navigationStartPrecise: navStartPrecise,
+        }
+    }
+
+    pub fn new(window: &JSRef<Window>) -> Temporary<PerformanceTiming> {
+        let timing = PerformanceTiming::new_inherited(window.navigationStart,
+                                                      window.navigationStartPrecise);
+        reflect_dom_object(~timing, window, PerformanceTimingBinding::Wrap)
+    }
+}
+
+pub trait PerformanceTimingMethods {
+    fn NavigationStart(&self) -> u64;
+    fn NavigationStartPrecise(&self) -> f64;
+}
+
+impl<'a> PerformanceTimingMethods for JSRef<'a, PerformanceTiming> {
+    fn NavigationStart(&self) -> u64 {
+        self.navigationStart
+    }
+
+    fn NavigationStartPrecise(&self) -> f64 {
+        self.navigationStartPrecise
+    }
+}
+
+impl Reflectable for PerformanceTiming {
+    fn reflector<'a>(&'a self) -> &'a Reflector {
+        &self.reflector_
+    }
+
+    fn mut_reflector<'a>(&'a mut self) -> &'a mut Reflector {
+        &mut self.reflector_
+    }
+}