return eDeltaPreEdgeField;
}
public TextField getTimePreEdgeField() {
if (this.timePreEdgeField == null) {
timePreEdgeField = new DoubleField(false);
timePreEdgeField.setPreferredSize(new Dimension(120, 20));
timePreEdgeField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (TrajectoryListView.validateField(timePreEdgeField.getText()))
scanKTrajectoryController.notifyTimePreEdgeFieldChange(Double