Add XRSessionEvent

3 files changed, 94 insertions, 0 deletions

diff --git a/components/script/dom/mod.rs b/components/script/dom/mod.rs
index 0a654f93c57..60701755ec8 100644
--- a/components/script/dom/mod.rs
+++ b/components/script/dom/mod.rs
@@ -552,6 +552,7 @@ pub mod xrreferencespace;
 pub mod xrrenderstate;
 pub mod xrrigidtransform;
 pub mod xrsession;
+pub mod xrsessionevent;
 pub mod xrspace;
 pub mod xrtest;
 pub mod xrview;
diff --git a/components/script/dom/webidls/XRSessionEvent.webidl b/components/script/dom/webidls/XRSessionEvent.webidl
new file mode 100644
index 00000000000..f48fa5eb342
--- /dev/null
+++ b/components/script/dom/webidls/XRSessionEvent.webidl
@@ -0,0 +1,15 @@
+/* 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/. */
+
+// https://immersive-web.github.io/webxr/#xrsessionevent-interface
+
+[SecureContext, Exposed=Window, Pref="dom.webxr.enabled", Constructor
+(DOMString type, XRSessionEventInit eventInitDict)]
+interface XRSessionEvent : Event {
+  [SameObject] readonly attribute XRSession session;
+};
+
+dictionary XRSessionEventInit : EventInit {
+  required XRSession session;
+};
diff --git a/components/script/dom/xrsessionevent.rs b/components/script/dom/xrsessionevent.rs
new file mode 100644
index 00000000000..6c2e8c0fb00
--- /dev/null
+++ b/components/script/dom/xrsessionevent.rs
@@ -0,0 +1,78 @@
+/* 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::EventBinding::EventBinding::EventMethods;
+use crate::dom::bindings::codegen::Bindings::XRSessionEventBinding::{self, XRSessionEventMethods};
+use crate::dom::bindings::error::Fallible;
+use crate::dom::bindings::inheritance::Castable;
+use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::bindings::str::DOMString;
+use crate::dom::event::Event;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::window::Window;
+use crate::dom::xrsession::XRSession;
+use dom_struct::dom_struct;
+use servo_atoms::Atom;
+
+#[dom_struct]
+pub struct XRSessionEvent {
+    event: Event,
+    session: Dom<XRSession>,
+}
+
+impl XRSessionEvent {
+    #[allow(unrooted_must_root)]
+    fn new_inherited(session: &XRSession) -> XRSessionEvent {
+        XRSessionEvent {
+            event: Event::new_inherited(),
+            session: Dom::from_ref(session),
+        }
+    }
+
+    pub fn new(
+        global: &GlobalScope,
+        type_: Atom,
+        bubbles: bool,
+        cancelable: bool,
+        session: &XRSession,
+    ) -> DomRoot<XRSessionEvent> {
+        let trackevent = reflect_dom_object(
+            Box::new(XRSessionEvent::new_inherited(&session)),
+            global,
+            XRSessionEventBinding::Wrap,
+        );
+        {
+            let event = trackevent.upcast::<Event>();
+            event.init_event(type_, bubbles, cancelable);
+        }
+        trackevent
+    }
+
+    pub fn Constructor(
+        window: &Window,
+        type_: DOMString,
+        init: &XRSessionEventBinding::XRSessionEventInit,
+    ) -> Fallible<DomRoot<XRSessionEvent>> {
+        Ok(XRSessionEvent::new(
+            &window.global(),
+            Atom::from(type_),
+            init.parent.bubbles,
+            init.parent.cancelable,
+            &init.session,
+        ))
+    }
+}
+
+impl XRSessionEventMethods for XRSessionEvent {
+    // https://immersive-web.github.io/webxr/#dom-xrsessioneventinit-session
+    fn Session(&self) -> DomRoot<XRSession> {
+        DomRoot::from_ref(&*self.session)
+    }
+
+    // https://dom.spec.whatwg.org/#dom-event-istrusted
+    fn IsTrusted(&self) -> bool {
+        self.event.IsTrusted()
+    }
+}