public void onSongAdded(@Observes AddSongEvent addSongEvent) {
for (Song song : addSongEvent.getAddedSongs()) {
if (!getAllSongs().contains(song)) {
allSongs.add(song);
if (hasText(song.getGenre())) getGenres().add(song.getGenre());
}
}
}
private void initGenresCache() {
genres = new HashSet<>();
genres.add("");
for (Song song : getAllSongs()) {
if (hasText(song.getGenre())) {
genres.add(song.getGenre());
}
}
}