service/mpris!: do not provide fallback track information

See the [!TIP] messages for more information.

Author: outfoxxed

src/services/mpris/player.cpp

@@ -10,7 +10,6 @@
 #include <qobject.h>
 #include <qproperty.h>
 #include <qstring.h>
-#include <qstringliteral.h>
 #include <qtmetamacros.h>
 #include <qtypes.h>
 
@@ -69,23 +68,20 @@ MprisPlayer::MprisPlayer(const QString& address, QObject* parent): QObject(paren
 	});
 
 	this->bTrackTitle.setBinding([this]() {
-		const auto& title = this->bMetadata.value().value("xesam:title").toString();
-		return title.isNull() ? QStringLiteral("Unknown Track") : title;
+		return this->bMetadata.value().value("xesam:title").toString();
 	});
 
 	this->bTrackAlbum.setBinding([this]() {
-		const auto& album = this->bMetadata.value().value("xesam:album").toString();
-		return album.isNull() ? QStringLiteral("Unknown Album") : album;
+		return this->bMetadata.value().value("xesam:album").toString();
 	});
 
 	this->bTrackArtist.setBinding([this]() {
 		const auto& artist = this->bMetadata.value().value("xesam:artist").value<QList<QString>>();
-		return artist.isEmpty() ? QStringLiteral("Unknown Artist") : artist.join(", ");
+		return artist.isEmpty() ? QString() : artist.join(", ");
 	});
 
 	this->bTrackAlbumArtist.setBinding([this]() {
-		const auto& artist = this->bMetadata.value().value("xesam:albumArtist").toString();
-		return artist.isNull() ? QStringLiteral("Unknown Artist") : artist;
+		return this->bMetadata.value().value("xesam:albumArtist").toString();
 	});
 
 	this->bTrackArtUrl.setBinding([this]() {

src/services/mpris/player.hpp

@@ -135,15 +135,27 @@ class MprisPlayer: public QObject {
 	/// > [!WARNING] This is NOT `mpris:trackid` as that is sometimes missing or nonunique
 	/// > in some players.
 	Q_PROPERTY(quint32 uniqueId READ uniqueId NOTIFY uniqueIdChanged BINDABLE bindableUniqueId);
-	/// The title of the current track, or "Unknown Track" if none was provided.
+	/// The title of the current track, or `""` if none was provided.
+	///
+	/// > [!TIP] Use `player.trackTitle || "Unknown Title"` to provide a message
+	/// > when no title is available.
 	Q_PROPERTY(QString trackTitle READ trackTitle NOTIFY trackTitleChanged BINDABLE bindableTrackTitle);
-	/// The current track's artist, or an empty string if none was provided.
+	/// The current track's artist, or an `""` if none was provided.
+	///
+	/// > [!TIP] Use `player.trackArtist || "Unknown Artist"` to provide a message
+	/// > when no artist is available.
 	Q_PROPERTY(QString trackArtist READ trackArtist NOTIFY trackArtistChanged BINDABLE bindableTrackArtist);
 	/// > [!ERROR] deprecated in favor of @@trackArtist.
 	Q_PROPERTY(QString trackArtists READ trackArtist NOTIFY trackArtistChanged BINDABLE bindableTrackArtist);
-	/// The current track's album, or "Unknown Album" if none was provided.
+	/// The current track's album, or `""` if none was provided.
+	///
+	/// > [!TIP] Use `player.trackAlbum || "Unknown Album"` to provide a message
+	/// > when no album is available.
 	Q_PROPERTY(QString trackAlbum READ trackAlbum NOTIFY trackAlbumChanged BINDABLE bindableTrackAlbum);
-	/// The current track's album artist, or "Unknown Artist" if none was provided.
+	/// The current track's album artist, or `""` if none was provided.
+	///
+	/// > [!TIP] Use `player.trackAlbumArtist || "Unknown Album"` to provide a message
+	/// > when no album artist is available.
 	Q_PROPERTY(QString trackAlbumArtist READ trackAlbumArtist NOTIFY trackAlbumArtistChanged BINDABLE bindableTrackAlbumArtist);
 	/// The current track's art url, or `""` if none was provided.
 	Q_PROPERTY(QString trackArtUrl READ trackArtUrl NOTIFY trackArtUrlChanged BINDABLE bindableTrackArtUrl);