1 files changed, 34 insertions, 4 deletions
diff --git a/components/script/dom/mediastreamtrack.rs b/components/script/dom/mediastreamtrack.rs
index b178feab6b3..79da91e0e45 100644
--- a/components/script/dom/mediastreamtrack.rs
+++ b/components/script/dom/mediastreamtrack.rs
@@ -2,32 +2,43 @@
  * 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::MediaStreamTrackBinding;
+use crate::dom::bindings::codegen::Bindings::MediaStreamTrackBinding::{
+    self, MediaStreamTrackMethods,
+};
 use crate::dom::bindings::reflector::reflect_dom_object;
 use crate::dom::bindings::root::DomRoot;
+use crate::dom::bindings::str::DOMString;
 use crate::dom::eventtarget::EventTarget;
 use crate::dom::globalscope::GlobalScope;
 use dom_struct::dom_struct;
 use servo_media::streams::registry::MediaStreamId;
+use servo_media::streams::MediaStreamType;
 
 #[dom_struct]
 pub struct MediaStreamTrack {
     eventtarget: EventTarget,
     #[ignore_malloc_size_of = "defined in servo-media"]
     id: MediaStreamId,
+    #[ignore_malloc_size_of = "defined in servo-media"]
+    ty: MediaStreamType,
 }
 
 impl MediaStreamTrack {
-    pub fn new_inherited(id: MediaStreamId) -> MediaStreamTrack {
+    pub fn new_inherited(id: MediaStreamId, ty: MediaStreamType) -> MediaStreamTrack {
         MediaStreamTrack {
             eventtarget: EventTarget::new_inherited(),
             id,
+            ty,
         }
     }
 
-    pub fn new(global: &GlobalScope, id: MediaStreamId) -> DomRoot<MediaStreamTrack> {
+    pub fn new(
+        global: &GlobalScope,
+        id: MediaStreamId,
+        ty: MediaStreamType,
+    ) -> DomRoot<MediaStreamTrack> {
         reflect_dom_object(
-            Box::new(MediaStreamTrack::new_inherited(id)),
+            Box::new(MediaStreamTrack::new_inherited(id, ty)),
             global,
             MediaStreamTrackBinding::Wrap,
         )
@@ -36,4 +47,23 @@ impl MediaStreamTrack {
     pub fn id(&self) -> MediaStreamId {
         self.id
     }
+
+    pub fn ty(&self) -> MediaStreamType {
+        self.ty
+    }
+}
+
+impl MediaStreamTrackMethods for MediaStreamTrack {
+    /// https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-kind
+    fn Kind(&self) -> DOMString {
+        match self.ty {
+            MediaStreamType::Video => "video".into(),
+            MediaStreamType::Audio => "audio".into(),
+        }
+    }
+
+    /// https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-id
+    fn Id(&self) -> DOMString {
+        self.id.id().to_string().into()
+    }
 }