gc.weighty = 0.0;
gc.anchor = GridBagConstraints.FIRST_LINE_START;
currentInfoPanel = new VersionInfoPanel(model, PointInTimeType.CURRENT_POINT_IN_TIME);
add(currentInfoPanel,gc);
adjustmentSynchronizer = new AdjustmentSynchronizer();
selectionSynchronizer = new SelectionSynchronizer();
popupMenu = new NodeListPopupMenu();
// ---------------------------