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import com.sun.star.awt.XItemListener;
import com.sun.star.lang.EventObject;
import com.sun.star.beans.XPropertySet;
import com.sun.star.uno.UnoRuntime;


public class RoadmapItemStateChangeListener implements XItemListener {
    protected com.sun.star.lang.XMultiServiceFactory m_xMSFDialogModel;

    public RoadmapItemStateChangeListener(com.sun.star.lang.XMultiServiceFactory xMSFDialogModel) {
        m_xMSFDialogModel = xMSFDialogModel;
    }

    public void itemStateChanged(com.sun.star.awt.ItemEvent itemEvent) {
        try {
            // get the new ID of the roadmap that is supposed to refer to the new step of the dialogmodel
            int nNewID = itemEvent.ItemId;
            XPropertySet xDialogModelPropertySet = UnoRuntime.queryInterface(XPropertySet.class, m_xMSFDialogModel);
            int nOldStep = ((Integer) xDialogModelPropertySet.getPropertyValue("Step")).intValue();
            // in the following line "ID" and "Step" are mixed together.
            // In fact in this case they denot the same
            if (nNewID != nOldStep){
                xDialogModelPropertySet.setPropertyValue("Step", new Integer(nNewID));
            }
        } catch (com.sun.star.uno.Exception exception) {
            exception.printStackTrace(System.err);
        }
    }

    public void disposing(EventObject eventObject) {
    }
}