void
MediaDeviceTrack::setGenre( const QString &newGenre )
{
if( !m_collection )
return;
MediaDeviceGenrePtr genrePtr;
MediaDeviceTrackPtr track( this );
GenreMap genreMap = m_collection.data()->memoryCollection()->genreMap();
// do cleanup of soon to be previous genre
genrePtr = m_genre;
if ( !genrePtr.isNull() )
{
// remove track from previous genre's tracklist
genrePtr->remTrack( track );
// if genre's tracklist is empty, remove genre from genremap
if( genrePtr->tracks().isEmpty() )
genreMap.remove( genrePtr->name() );
}
// change to a new genre
// check for the existence of the genre to be set to,
// if genre exists, reuse, else create
if ( genreMap.contains( newGenre ) )
{
genrePtr = MediaDeviceGenrePtr::staticCast( genreMap.value( newGenre ) );
}
else
{
genrePtr = MediaDeviceGenrePtr( new MediaDeviceGenre( newGenre ) );
genreMap.insert( newGenre, GenrePtr::staticCast( genrePtr ) );
}
// add track to genre's tracklist
genrePtr->addTrack( track );
// set track's genre to the new genre
setGenre( genrePtr );
m_collection.data()->memoryCollection()->acquireWriteLock();
m_collection.data()->memoryCollection()->setGenreMap( genreMap );
m_collection.data()->memoryCollection()->releaseLock();
}
