MediaSession API DOM bindings

components/script/dom/mediametadata.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::MediaMetadataBinding;
+use crate::dom::bindings::codegen::Bindings::MediaMetadataBinding::MediaMetadataInit;
+use crate::dom::bindings::codegen::Bindings::MediaMetadataBinding::MediaMetadataMethods;
+use crate::dom::bindings::error::Fallible;
+use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
+use crate::dom::bindings::root::{DomRoot, MutNullableDom};
+use crate::dom::bindings::str::DOMString;
+use crate::dom::mediasession::MediaSession;
+use crate::dom::window::Window;
+use dom_struct::dom_struct;
+
+#[dom_struct]
+pub struct MediaMetadata {
+    reflector_: Reflector,
+    session: MutNullableDom<MediaSession>,
+    title: DomRefCell<DOMString>,
+    artist: DomRefCell<DOMString>,
+    album: DomRefCell<DOMString>,
+}
+
+impl MediaMetadata {
+    fn new_inherited(init: &MediaMetadataInit) -> MediaMetadata {
+        MediaMetadata {
+            reflector_: Reflector::new(),
+            // TODO(ferjm): Set active media session?
+            session: Default::default(),
+            title: DomRefCell::new(init.title.clone()),
+            artist: DomRefCell::new(init.artist.clone()),
+            album: DomRefCell::new(init.album.clone()),
+        }
+    }
+
+    pub fn new(global: &Window, init: &MediaMetadataInit) -> DomRoot<MediaMetadata> {
+        reflect_dom_object(
+            Box::new(MediaMetadata::new_inherited(init)),
+            global,
+            MediaMetadataBinding::Wrap,
+        )
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-mediametadata
+    pub fn Constructor(
+        window: &Window,
+        init: &MediaMetadataInit,
+    ) -> Fallible<DomRoot<MediaMetadata>> {
+        Ok(MediaMetadata::new(window, init))
+    }
+
+    fn queue_update_metadata_algorithm(&self) {
+        if self.session.get().is_none() {
+            return;
+        }
+    }
+}
+
+impl MediaMetadataMethods for MediaMetadata {
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-title
+    fn Title(&self) -> DOMString {
+        self.title.borrow().clone()
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-title
+    fn SetTitle(&self, value: DOMString) -> () {
+        *self.title.borrow_mut() = value;
+        self.queue_update_metadata_algorithm();
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-artist
+    fn Artist(&self) -> DOMString {
+        self.artist.borrow().clone()
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-artist
+    fn SetArtist(&self, value: DOMString) -> () {
+        *self.artist.borrow_mut() = value;
+        self.queue_update_metadata_algorithm();
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-album
+    fn Album(&self) -> DOMString {
+        self.album.borrow().clone()
+    }
+
+    /// https://w3c.github.io/mediasession/#dom-mediametadata-album
+    fn SetAlbum(&self, value: DOMString) -> () {
+        *self.album.borrow_mut() = value;
+        self.queue_update_metadata_algorithm();
+    }
+}