@Override
public void contentsChanged(ListDataEvent e) {
// case where the active layer was removed
if (!layers.contains(activeLayer)) {
setActiveLayer(null);
}
if ((activeLayer == null) && !layers.isEmpty()) {
setActiveLayer(layers.getLayers()[0]);
}
updateGraphicsPanelDrawers();
getScore().autorescaleScoreAxis();
}
/**
* Method used for serialization
*
* @param out
* @throws IOException
*/
private void writeObject(ObjectOutputStream out) throws IOException {
out.writeInt(SAVED_FORMAT_VERSION_NUMBER);
out.writeInt(trackNumber);
out.writeObject(backgroundLayer);
out.writeObject(foregroundLayer);
// write the number of layers
if ((layers == null) || layers.isEmpty()) {
out.writeInt(0);
} else {
out.writeInt(layers.size());
out.writeObject(layers);
// make sure the active layer is not null
if (activeLayer == null) {
setActiveLayer(layers.getLayers()[0]);
}
out.writeObject(activeLayer);
}
out.writeObject(score);
// save the height of the track
out.writeInt(trackPanel.getHeight());
if (SAVED_FORMAT_VERSION_NUMBER >= 1) {
out.writeObject(getName());
}
}