script: Move webaudio DOM interfaces to script/dom/audio/ (#38894)

Moves interfaces defined by the webaudio spec (27 files) to the new
`script/dom/audio/` module from the `script/dom/` module.

Testing: Just a refactor shouldn't need any testing
Fixes: N/A

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

components/script/dom/audio/audiotrack.rs

@@ -0,0 +1,126 @@
+/* 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 std::cell::Cell;
+
+use dom_struct::dom_struct;
+
+use crate::dom::audio::audiotracklist::AudioTrackList;
+use crate::dom::bindings::cell::DomRefCell;
+use crate::dom::bindings::codegen::Bindings::AudioTrackBinding::AudioTrackMethods;
+use crate::dom::bindings::reflector::{Reflector, reflect_dom_object};
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::bindings::str::DOMString;
+use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
+
+#[dom_struct]
+pub(crate) struct AudioTrack {
+    reflector_: Reflector,
+    id: DOMString,
+    kind: DOMString,
+    label: DOMString,
+    language: DOMString,
+    enabled: Cell<bool>,
+    track_list: DomRefCell<Option<Dom<AudioTrackList>>>,
+}
+
+impl AudioTrack {
+    pub(crate) fn new_inherited(
+        id: DOMString,
+        kind: DOMString,
+        label: DOMString,
+        language: DOMString,
+        track_list: Option<&AudioTrackList>,
+    ) -> AudioTrack {
+        AudioTrack {
+            reflector_: Reflector::new(),
+            id,
+            kind,
+            label,
+            language,
+            enabled: Cell::new(false),
+            track_list: DomRefCell::new(track_list.map(Dom::from_ref)),
+        }
+    }
+
+    pub(crate) fn new(
+        window: &Window,
+        id: DOMString,
+        kind: DOMString,
+        label: DOMString,
+        language: DOMString,
+        track_list: Option<&AudioTrackList>,
+        can_gc: CanGc,
+    ) -> DomRoot<AudioTrack> {
+        reflect_dom_object(
+            Box::new(AudioTrack::new_inherited(
+                id, kind, label, language, track_list,
+            )),
+            window,
+            can_gc,
+        )
+    }
+
+    pub(crate) fn id(&self) -> DOMString {
+        self.id.clone()
+    }
+
+    pub(crate) fn kind(&self) -> DOMString {
+        self.kind.clone()
+    }
+
+    pub(crate) fn enabled(&self) -> bool {
+        self.enabled.get()
+    }
+
+    pub(crate) fn set_enabled(&self, value: bool) {
+        self.enabled.set(value);
+    }
+
+    pub(crate) fn add_track_list(&self, track_list: &AudioTrackList) {
+        *self.track_list.borrow_mut() = Some(Dom::from_ref(track_list));
+    }
+
+    pub(crate) fn remove_track_list(&self) {
+        *self.track_list.borrow_mut() = None;
+    }
+}
+
+impl AudioTrackMethods<crate::DomTypeHolder> for AudioTrack {
+    // https://html.spec.whatwg.org/multipage/#dom-audiotrack-id
+    fn Id(&self) -> DOMString {
+        self.id()
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-audiotrack-kind
+    fn Kind(&self) -> DOMString {
+        self.kind()
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-audiotrack-label
+    fn Label(&self) -> DOMString {
+        self.label.clone()
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-audiotrack-language
+    fn Language(&self) -> DOMString {
+        self.language.clone()
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-audiotrack-enabled
+    fn Enabled(&self) -> bool {
+        self.enabled()
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-audiotrack-enabled
+    fn SetEnabled(&self, value: bool) {
+        if let Some(list) = self.track_list.borrow().as_ref() {
+            if let Some(idx) = list.find(self) {
+                list.set_enabled(idx, value);
+            }
+        }
+        self.set_enabled(value);
+    }
+}