* Let Track detach from TrackData when changing metadata.

src/libtomahawk/Track.cpp

@@ -128,12 +128,63 @@ Track::~Track()
 }
 
 
+void
+Track::setArtist( const QString& artist )
+{
+    Q_D( Track );
+
+    d->artistPtr = artist_ptr();
+    d->trackData = TrackData::get( 0, artist, track() );
+
+    init();
+    emit updated();
+}
+
+
 void
 Track::setAlbum( const QString& album )
 {
     Q_D( Track );
+
+    d->albumPtr = album_ptr();
     d->album = album;
     updateSortNames();
+
+    emit updated();
+}
+
+
+void
+Track::setTrack( const QString& track )
+{
+    Q_D( Track );
+
+    d->trackData = TrackData::get( 0, artist(), track );
+
+    init();
+    emit updated();
+}
+
+
+void
+Track::setAlbumPos( unsigned int albumpos )
+{
+    Q_D( Track );
+
+    d->albumpos = albumpos;
+
+    emit updated();
+}
+
+
+void
+Track::setAttributes( const QVariantMap& map )
+{
+    Q_D( Track );
+
+    d->trackData->setAttributes( map );
+
+    emit attributesLoaded();
 }
 
 

src/libtomahawk/Track.h

@@ -53,11 +53,12 @@ public:
 
     virtual ~Track();
 
-    // void setArtist( const QString& artist ) { m_artist = artist; updateSortNames(); }
+    void setArtist( const QString& artist );
     void setAlbum( const QString& album );
-    // void setTrack( const QString& track ) { m_track = track; updateSortNames(); }
+    void setTrack( const QString& track );
+
+    void setAlbumPos( unsigned int albumpos );
     // void setDuration( int duration ) { m_duration = duration; }
-    // void setAlbumPos( unsigned int albumpos ) { m_albumpos = albumpos; }
     // void setDiscNumber( unsigned int discnumber ) { m_discnumber = discnumber; }
     // void setComposer( const QString& composer ) { m_composer = composer; updateSortNames(); }
 
@@ -97,6 +98,7 @@ public:
 
     void loadAttributes();
     QVariantMap attributes() const;
+    void setAttributes( const QVariantMap& map );
 
     void loadStats();
     QList< Tomahawk::PlaybackLog > playbackHistory( const Tomahawk::source_ptr& source = Tomahawk::source_ptr() ) const;