/// <summary>
        /// Responds to action performed events. </summary>
        /// <param name="e"> the ActionEvent that happened. </param>
        public virtual void actionPerformed(ActionEvent e)
        {
            string routine = "StateMod_Reservoir_Return_JFrame::actionPerformed";

            string action = e.getActionCommand();

            if (action.Equals(__BUTTON_ADD_RETURN))
            {
                StateMod_ReturnFlow aReturn = new StateMod_ReturnFlow(StateMod_DataSet.COMP_RESERVOIR_RETURN);
                aReturn._isClone = true;
                StateMod_ReturnFlow last = (StateMod_ReturnFlow)__worksheet.getLastRowData();

                if (last == null)
                {
                    aReturn.setID(StateMod_Util.createNewID(__currentRes.getID()));
                    aReturn.setCgoto(__currentRes.getID());
                }
                else
                {
                    aReturn.setID(StateMod_Util.createNewID(last.getID()));
                    aReturn.setCgoto(last.getCgoto());
                }
                __worksheet.scrollToLastRow();
                __worksheet.addRow(aReturn);
                __worksheet.selectLastRow();
                __deleteReturn_JButton.setEnabled(true);
            }
            else if (action.Equals(__BUTTON_DEL_RETURN))
            {
                int row = __worksheet.getSelectedRow();
                if (row != -1)
                {
                    int x = (new ResponseJDialog(this, "Delete return", "Delete reservoir return?", ResponseJDialog.YES | ResponseJDialog.NO)).response();
                    if (x == ResponseJDialog.NO)
                    {
                        return;
                    }

                    __worksheet.cancelEditing();
                    __worksheet.deleteRow(row);
                    __deleteReturn_JButton.setEnabled(false);
                }
                else
                {
                    Message.printWarning(1, routine, "Must select desired return to delete.");
                }
            }
            else if (action.Equals(__BUTTON_CLOSE))
            {
                if (saveData())
                {
                    setVisible(false);
                    dispose();
                }
            }
            else if (action.Equals(__BUTTON_APPLY))
            {
                saveData();
            }
            else if (action.Equals(__BUTTON_CANCEL))
            {
                setVisible(false);
                dispose();
            }
            else if (e.getSource() == __help_JButton)
            {
                // TODO HELP (JTS - 2003-06-09)
            }
        }