1 files changed, 75 insertions, 0 deletions
diff --git a/components/script/dom/vrstageparameters.rs b/components/script/dom/vrstageparameters.rs
new file mode 100644
index 00000000000..ac3636aac91
--- /dev/null
+++ b/components/script/dom/vrstageparameters.rs
@@ -0,0 +1,75 @@
+/* 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 core::nonzero::NonZero;
+use dom::bindings::cell::DOMRefCell;
+use dom::bindings::codegen::Bindings::VRStageParametersBinding;
+use dom::bindings::codegen::Bindings::VRStageParametersBinding::VRStageParametersMethods;
+use dom::bindings::conversions::{slice_to_array_buffer_view, update_array_buffer_view};
+use dom::bindings::js::Root;
+use dom::bindings::num::Finite;
+use dom::bindings::reflector::{Reflector, reflect_dom_object};
+use dom::globalscope::GlobalScope;
+use js::jsapi::{Heap, JSContext, JSObject};
+use webvr_traits::WebVRStageParameters;
+
+#[dom_struct]
+pub struct VRStageParameters {
+    reflector_: Reflector,
+    #[ignore_heap_size_of = "Defined in rust-webvr"]
+    parameters: DOMRefCell<WebVRStageParameters>,
+    transform: Heap<*mut JSObject>,
+}
+
+unsafe_no_jsmanaged_fields!(WebVRStageParameters);
+
+impl VRStageParameters {
+    #[allow(unsafe_code)]
+    #[allow(unrooted_must_root)]
+    fn new_inherited(parameters: WebVRStageParameters, global: &GlobalScope) -> VRStageParameters {
+        let mut stage = VRStageParameters {
+            reflector_: Reflector::new(),
+            parameters: DOMRefCell::new(parameters),
+            transform: Heap::default()
+        };
+        unsafe {
+            stage.transform.set(slice_to_array_buffer_view(global.get_cx(),
+                                                           &stage.parameters.borrow().sitting_to_standing_transform));
+        }
+
+        stage
+    }
+
+    pub fn new(parameters: WebVRStageParameters, global: &GlobalScope) -> Root<VRStageParameters> {
+        reflect_dom_object(box VRStageParameters::new_inherited(parameters, global),
+                           global,
+                           VRStageParametersBinding::Wrap)
+    }
+
+    #[allow(unsafe_code)]
+    pub fn update(&self, parameters: &WebVRStageParameters) {
+        unsafe {
+            update_array_buffer_view(self.transform.get(), &parameters.sitting_to_standing_transform);
+        }
+        *self.parameters.borrow_mut() = parameters.clone();
+    }
+}
+
+impl VRStageParametersMethods for VRStageParameters {
+    #[allow(unsafe_code)]
+    // https://w3c.github.io/webvr/#dom-vrstageparameters-sittingtostandingtransform
+    unsafe fn SittingToStandingTransform(&self, _cx: *mut JSContext) -> NonZero<*mut JSObject> {
+        NonZero::new(self.transform.get())
+    }
+
+    // https://w3c.github.io/webvr/#dom-vrstageparameters-sizex
+    fn SizeX(&self) -> Finite<f32> {
+        Finite::wrap(self.parameters.borrow().size_x)
+    }
+
+    // https://w3c.github.io/webvr/#dom-vrstageparameters-sizez
+    fn SizeZ(&self) -> Finite<f32> {
+        Finite::wrap(self.parameters.borrow().size_z)
+    }
+}