From 341d36a82604e9272af8497f81f5ad0826f4e152 Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Thu, 9 Apr 2020 14:43:51 -0700
Subject: [PATCH] Add XRHitTestSource

---
 components/script/dom/bindings/trace.rs       |  3 +-
 components/script/dom/mod.rs                  |  1 +
 .../script/dom/webidls/XRHitTestSource.webidl | 11 +++++
 components/script/dom/xrhittestsource.rs      | 47 +++++++++++++++++++
 4 files changed, 61 insertions(+), 1 deletion(-)
 create mode 100644 components/script/dom/webidls/XRHitTestSource.webidl
 create mode 100644 components/script/dom/xrhittestsource.rs

diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index 2b6058e826b..b460a90b4b0 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -553,7 +553,8 @@ unsafe_no_jsmanaged_fields!(
     webxr_api::Session,
     webxr_api::Frame,
     webxr_api::InputSource,
-    webxr_api::InputId
+    webxr_api::InputId,
+    webxr_api::HitTestId
 );
 unsafe_no_jsmanaged_fields!(ScriptToConstellationChan);
 unsafe_no_jsmanaged_fields!(InteractiveMetrics);
diff --git a/components/script/dom/mod.rs b/components/script/dom/mod.rs
index 330f083397b..17653d9536b 100644
--- a/components/script/dom/mod.rs
+++ b/components/script/dom/mod.rs
@@ -572,6 +572,7 @@ pub mod xmlhttprequesteventtarget;
 pub mod xmlhttprequestupload;
 pub mod xmlserializer;
 pub mod xrframe;
+pub mod xrhittestsource;
 pub mod xrinputsource;
 pub mod xrinputsourcearray;
 pub mod xrinputsourceevent;
diff --git a/components/script/dom/webidls/XRHitTestSource.webidl b/components/script/dom/webidls/XRHitTestSource.webidl
new file mode 100644
index 00000000000..92faf352686
--- /dev/null
+++ b/components/script/dom/webidls/XRHitTestSource.webidl
@@ -0,0 +1,11 @@
+/* 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/hit-test/#xrhittestsource-interface
+
+
+[SecureContext, Exposed=Window]
+interface XRHitTestSource {
+  void cancel();
+};
diff --git a/components/script/dom/xrhittestsource.rs b/components/script/dom/xrhittestsource.rs
new file mode 100644
index 00000000000..8825c1e7e7c
--- /dev/null
+++ b/components/script/dom/xrhittestsource.rs
@@ -0,0 +1,47 @@
+/* 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::XRHitTestSourceBinding::XRHitTestSourceMethods;
+use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::xrsession::XRSession;
+use dom_struct::dom_struct;
+use webxr_api::HitTestId;
+
+#[dom_struct]
+pub struct XRHitTestSource {
+    reflector_: Reflector,
+    #[ignore_malloc_size_of = "defined in webxr"]
+    id: HitTestId,
+    session: Dom<XRSession>,
+}
+
+impl XRHitTestSource {
+    fn new_inherited(id: HitTestId, session: &XRSession) -> XRHitTestSource {
+        XRHitTestSource {
+            reflector_: Reflector::new(),
+            id,
+            session: Dom::from_ref(session),
+        }
+    }
+
+    pub fn new(
+        global: &GlobalScope,
+        id: HitTestId,
+        session: &XRSession,
+    ) -> DomRoot<XRHitTestSource> {
+        reflect_dom_object(
+            Box::new(XRHitTestSource::new_inherited(id, session)),
+            global,
+        )
+    }
+}
+
+impl XRHitTestSourceMethods for XRHitTestSource {
+    // https://immersive-web.github.io/hit-test/#dom-xrhittestsource-cancel
+    fn Cancel(&self) {
+        self.session.with_session(|s| s.cancel_hit_test(self.id));
+    }
+}