Allow browsing contexts to resolve to cross-origin windows.

components/script/dom/dissimilaroriginlocation.rs

@@ -0,0 +1,80 @@
+/* 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::Bindings::DissimilarOriginLocationBinding;
+use dom::bindings::codegen::Bindings::DissimilarOriginLocationBinding::DissimilarOriginLocationMethods;
+use dom::bindings::error::{Error, ErrorResult, Fallible};
+use dom::bindings::js::{JS, Root};
+use dom::bindings::reflector::Reflector;
+use dom::bindings::reflector::reflect_dom_object;
+use dom::bindings::str::DOMString;
+use dom::bindings::str::USVString;
+use dom::dissimilaroriginwindow::DissimilarOriginWindow;
+
+/// Represents a dissimilar-origin `Location` that exists in another script thread.
+///
+/// Since the `Location` is in a different script thread, we cannot access it
+/// directly, but some of its accessors (for example setting `location.href`)
+/// still need to function.
+
+#[dom_struct]
+pub struct DissimilarOriginLocation {
+    /// The reflector. Once we have XOWs, this will have a cross-origin
+    /// wrapper placed around it.
+    reflector: Reflector,
+
+    /// The window associated with this location.
+    window: JS<DissimilarOriginWindow>,
+}
+
+impl DissimilarOriginLocation {
+    #[allow(unrooted_must_root)]
+    fn new_inherited(window: &DissimilarOriginWindow) -> DissimilarOriginLocation {
+        DissimilarOriginLocation {
+            reflector: Reflector::new(),
+            window: JS::from_ref(window),
+        }
+    }
+
+    pub fn new(window: &DissimilarOriginWindow) -> Root<DissimilarOriginLocation> {
+        reflect_dom_object(box DissimilarOriginLocation::new_inherited(window),
+                           window,
+                           DissimilarOriginLocationBinding::Wrap)
+    }
+}
+
+impl DissimilarOriginLocationMethods for DissimilarOriginLocation {
+    // https://html.spec.whatwg.org/multipage/#dom-location-href
+    fn GetHref(&self) -> Fallible<USVString> {
+        Err(Error::Security)
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-location-href
+    fn SetHref(&self, _: USVString) -> ErrorResult {
+        // TODO: setting href on a cross-origin window should succeed?
+        Err(Error::Security)
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-location-assign
+    fn Assign(&self, _: USVString) -> Fallible<()> {
+        // TODO: setting href on a cross-origin window should succeed?
+        Err(Error::Security)
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-location-replace
+    fn Replace(&self, _: USVString) -> Fallible<()> {
+        // TODO: replacing href on a cross-origin window should succeed?
+        Err(Error::Security)
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-location-reload
+    fn Reload(&self) -> Fallible<()> {
+        Err(Error::Security)
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-location-href
+    fn Stringifier(&self) -> Fallible<DOMString> {
+        Err(Error::Security)
+    }
+}