MediaSession API DOM bindings

components/script/dom/mediasession.rs

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+/* 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::cell::DomRefCell;
+use crate::dom::bindings::codegen::Bindings::MediaSessionBinding;
+use crate::dom::bindings::codegen::Bindings::MediaSessionBinding::MediaSessionAction;
+use crate::dom::bindings::codegen::Bindings::MediaSessionBinding::MediaSessionActionHandler;
+use crate::dom::bindings::codegen::Bindings::MediaSessionBinding::MediaSessionMethods;
+use crate::dom::bindings::codegen::Bindings::MediaSessionBinding::MediaSessionPlaybackState;
+use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
+use crate::dom::bindings::root::{DomRoot, MutNullableDom};
+use crate::dom::mediametadata::MediaMetadata;
+use crate::dom::window::Window;
+use dom_struct::dom_struct;
+use std::rc::Rc;
+
+#[dom_struct]
+pub struct MediaSession {
+    reflector_: Reflector,
+    /// https://w3c.github.io/mediasession/#dom-mediasession-metadata
+    metadata: MutNullableDom<MediaMetadata>,
+    /// https://w3c.github.io/mediasession/#dom-mediasession-playbackstate
+    playback_state: DomRefCell<MediaSessionPlaybackState>,
+}
+
+impl MediaSession {
+    fn new_inherited() -> MediaSession {
+        MediaSession {
+            reflector_: Reflector::new(),
+            metadata: Default::default(),
+            playback_state: DomRefCell::new(MediaSessionPlaybackState::None),
+        }
+    }
+
+    pub fn new(global: &Window) -> DomRoot<MediaSession> {
+        reflect_dom_object(
+            Box::new(MediaSession::new_inherited()),
+            global,
+            MediaSessionBinding::Wrap,
+        )
+    }
+}
+
+impl MediaSessionMethods for MediaSession {
+    fn GetMetadata(&self) -> Option<DomRoot<MediaMetadata>> {
+        self.metadata.get()
+    }
+
+    fn SetMetadata(&self, value: Option<&MediaMetadata>) {
+        self.metadata.set(value);
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediasession-playbackstate
+    fn PlaybackState(&self) -> MediaSessionPlaybackState {
+        *self.playback_state.borrow()
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediasession-playbackstate
+    fn SetPlaybackState(&self, value: MediaSessionPlaybackState) {
+        *self.playback_state.borrow_mut() = value;
+    }
+
+    fn SetActionHandler(
+        &self,
+        _action: MediaSessionAction,
+        _handler: Option<Rc<MediaSessionActionHandler>>,
+    ) {
+    }
+}