symbolTypeCombo = createComboControl(lineSeriesGroup, labels);
symbolTypeCombo.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
String value = symbolTypeCombo.getText();
PlotSymbolType selectedType = PlotSymbolType.CIRCLE;
for (PlotSymbolType type : PlotSymbolType.values()) {
if (type.label.equals(value)) {
selectedType = type;
}
}