Adding upstream version 3.38.6.upstream/3.38.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 300 insertions, 0 deletions

diff --git a/js/ui/mpris.js b/js/ui/mpris.js
new file mode 100644
index 0000000..3650c57
--- /dev/null
+++ b/js/ui/mpris.js
@@ -0,0 +1,300 @@
+/* exported MediaSection */
+const { Gio, GObject, Shell, St } = imports.gi;
+const Signals = imports.signals;
+
+const Main = imports.ui.main;
+const MessageList = imports.ui.messageList;
+
+const { loadInterfaceXML } = imports.misc.fileUtils;
+
+const DBusIface = loadInterfaceXML('org.freedesktop.DBus');
+const DBusProxy = Gio.DBusProxy.makeProxyWrapper(DBusIface);
+
+const MprisIface = loadInterfaceXML('org.mpris.MediaPlayer2');
+const MprisProxy = Gio.DBusProxy.makeProxyWrapper(MprisIface);
+
+const MprisPlayerIface = loadInterfaceXML('org.mpris.MediaPlayer2.Player');
+const MprisPlayerProxy = Gio.DBusProxy.makeProxyWrapper(MprisPlayerIface);
+
+const MPRIS_PLAYER_PREFIX = 'org.mpris.MediaPlayer2.';
+
+var MediaMessage = GObject.registerClass(
+class MediaMessage extends MessageList.Message {
+    _init(player) {
+        super._init('', '');
+
+        this._player = player;
+
+        this._icon = new St.Icon({ style_class: 'media-message-cover-icon' });
+        this.setIcon(this._icon);
+
+        this._prevButton = this.addMediaControl('media-skip-backward-symbolic',
+            () => {
+                this._player.previous();
+            });
+
+        this._playPauseButton = this.addMediaControl(null,
+            () => {
+                this._player.playPause();
+            });
+
+        this._nextButton = this.addMediaControl('media-skip-forward-symbolic',
+            () => {
+                this._player.next();
+            });
+
+        this._updateHandlerId =
+            this._player.connect('changed', this._update.bind(this));
+        this._closedHandlerId =
+            this._player.connect('closed', this.close.bind(this));
+        this._update();
+    }
+
+    _onDestroy() {
+        super._onDestroy();
+        this._player.disconnect(this._updateHandlerId);
+        this._player.disconnect(this._closedHandlerId);
+    }
+
+    vfunc_clicked() {
+        this._player.raise();
+        Main.panel.closeCalendar();
+    }
+
+    _updateNavButton(button, sensitive) {
+        button.reactive = sensitive;
+    }
+
+    _update() {
+        this.setTitle(this._player.trackArtists.join(', '));
+        this.setBody(this._player.trackTitle);
+
+        if (this._player.trackCoverUrl) {
+            let file = Gio.File.new_for_uri(this._player.trackCoverUrl);
+            this._icon.gicon = new Gio.FileIcon({ file });
+            this._icon.remove_style_class_name('fallback');
+        } else {
+            this._icon.icon_name = 'audio-x-generic-symbolic';
+            this._icon.add_style_class_name('fallback');
+        }
+
+        let isPlaying = this._player.status == 'Playing';
+        let iconName = isPlaying
+            ? 'media-playback-pause-symbolic'
+            : 'media-playback-start-symbolic';
+        this._playPauseButton.child.icon_name = iconName;
+
+        this._updateNavButton(this._prevButton, this._player.canGoPrevious);
+        this._updateNavButton(this._nextButton, this._player.canGoNext);
+    }
+});
+
+var MprisPlayer = class MprisPlayer {
+    constructor(busName) {
+        this._mprisProxy = new MprisProxy(Gio.DBus.session, busName,
+                                          '/org/mpris/MediaPlayer2',
+                                          this._onMprisProxyReady.bind(this));
+        this._playerProxy = new MprisPlayerProxy(Gio.DBus.session, busName,
+                                                 '/org/mpris/MediaPlayer2',
+                                                 this._onPlayerProxyReady.bind(this));
+
+        this._visible = false;
+        this._trackArtists = [];
+        this._trackTitle = '';
+        this._trackCoverUrl = '';
+        this._busName = busName;
+    }
+
+    get status() {
+        return this._playerProxy.PlaybackStatus;
+    }
+
+    get trackArtists() {
+        return this._trackArtists;
+    }
+
+    get trackTitle() {
+        return this._trackTitle;
+    }
+
+    get trackCoverUrl() {
+        return this._trackCoverUrl;
+    }
+
+    playPause() {
+        this._playerProxy.PlayPauseRemote();
+    }
+
+    get canGoNext() {
+        return this._playerProxy.CanGoNext;
+    }
+
+    next() {
+        this._playerProxy.NextRemote();
+    }
+
+    get canGoPrevious() {
+        return this._playerProxy.CanGoPrevious;
+    }
+
+    previous() {
+        this._playerProxy.PreviousRemote();
+    }
+
+    raise() {
+        // The remote Raise() method may run into focus stealing prevention,
+        // so prefer activating the app via .desktop file if possible
+        let app = null;
+        if (this._mprisProxy.DesktopEntry) {
+            let desktopId = '%s.desktop'.format(this._mprisProxy.DesktopEntry);
+            app = Shell.AppSystem.get_default().lookup_app(desktopId);
+        }
+
+        if (app)
+            app.activate();
+        else if (this._mprisProxy.CanRaise)
+            this._mprisProxy.RaiseRemote();
+    }
+
+    _close() {
+        this._mprisProxy.disconnect(this._ownerNotifyId);
+        this._mprisProxy = null;
+
+        this._playerProxy.disconnect(this._propsChangedId);
+        this._playerProxy = null;
+
+        this.emit('closed');
+    }
+
+    _onMprisProxyReady() {
+        this._ownerNotifyId = this._mprisProxy.connect('notify::g-name-owner',
+            () => {
+                if (!this._mprisProxy.g_name_owner)
+                    this._close();
+            });
+        // It is possible for the bus to disappear before the previous signal
+        // is connected, so we must ensure that the bus still exists at this
+        // point.
+        if (!this._mprisProxy.g_name_owner)
+            this._close();
+    }
+
+    _onPlayerProxyReady() {
+        this._propsChangedId = this._playerProxy.connect('g-properties-changed',
+                                                         this._updateState.bind(this));
+        this._updateState();
+    }
+
+    _updateState() {
+        let metadata = {};
+        for (let prop in this._playerProxy.Metadata)
+            metadata[prop] = this._playerProxy.Metadata[prop].deep_unpack();
+
+        // Validate according to the spec; some clients send buggy metadata:
+        // https://www.freedesktop.org/wiki/Specifications/mpris-spec/metadata
+        this._trackArtists = metadata['xesam:artist'];
+        if (!Array.isArray(this._trackArtists) ||
+            !this._trackArtists.every(artist => typeof artist === 'string')) {
+            if (typeof this._trackArtists !== 'undefined') {
+                log(('Received faulty track artist metadata from %s; ' +
+                    'expected an array of strings, got %s (%s)').format(
+                    this._busName, this._trackArtists, typeof this._trackArtists));
+            }
+            this._trackArtists =  [_("Unknown artist")];
+        }
+
+        this._trackTitle = metadata['xesam:title'];
+        if (typeof this._trackTitle !== 'string') {
+            if (typeof this._trackTitle !== 'undefined') {
+                log(('Received faulty track title metadata from %s; ' +
+                    'expected a string, got %s (%s)').format(
+                    this._busName, this._trackTitle, typeof this._trackTitle));
+            }
+            this._trackTitle = _("Unknown title");
+        }
+
+        this._trackCoverUrl = metadata['mpris:artUrl'];
+        if (typeof this._trackCoverUrl !== 'string') {
+            if (typeof this._trackCoverUrl !== 'undefined') {
+                log(('Received faulty track cover art metadata from %s; ' +
+                    'expected a string, got %s (%s)').format(
+                    this._busName, this._trackCoverUrl, typeof this._trackCoverUrl));
+            }
+            this._trackCoverUrl = '';
+        }
+
+        this.emit('changed');
+
+        let visible = this._playerProxy.CanPlay;
+
+        if (this._visible != visible) {
+            this._visible = visible;
+            if (visible)
+                this.emit('show');
+            else
+                this.emit('hide');
+        }
+    }
+};
+Signals.addSignalMethods(MprisPlayer.prototype);
+
+var MediaSection = GObject.registerClass(
+class MediaSection extends MessageList.MessageListSection {
+    _init() {
+        super._init();
+
+        this._players = new Map();
+
+        this._proxy = new DBusProxy(Gio.DBus.session,
+                                    'org.freedesktop.DBus',
+                                    '/org/freedesktop/DBus',
+                                    this._onProxyReady.bind(this));
+    }
+
+    get allowed() {
+        return !Main.sessionMode.isGreeter;
+    }
+
+    _addPlayer(busName) {
+        if (this._players.get(busName))
+            return;
+
+        let player = new MprisPlayer(busName);
+        let message = null;
+        player.connect('closed',
+            () => {
+                this._players.delete(busName);
+            });
+        player.connect('show', () => {
+            message = new MediaMessage(player);
+            this.addMessage(message, true);
+        });
+        player.connect('hide', () => {
+            this.removeMessage(message, true);
+            message = null;
+        });
+
+        this._players.set(busName, player);
+    }
+
+    _onProxyReady() {
+        this._proxy.ListNamesRemote(([names]) => {
+            names.forEach(name => {
+                if (!name.startsWith(MPRIS_PLAYER_PREFIX))
+                    return;
+
+                this._addPlayer(name);
+            });
+        });
+        this._proxy.connectSignal('NameOwnerChanged',
+                                  this._onNameOwnerChanged.bind(this));
+    }
+
+    _onNameOwnerChanged(proxy, sender, [name, oldOwner, newOwner]) {
+        if (!name.startsWith(MPRIS_PLAYER_PREFIX))
+            return;
+
+        if (newOwner && !oldOwner)
+            this._addPlayer(name);
+    }
+});