/**

  * JTable高级应用

  * @author Wfei

  *

  */

 public class JTableKnow_C extends JFrame

 {

     JTable jTable;

     MyJMenuItem jMenuItem;

     MyJMenuItem jMenuItem2;

     JPopupMenu jPopupMenu;

     JMenu jMenu;

     public JTableKnow_C()

     {

         this.setBounds(300, 100, 400, 300);

         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

         Object[][] tableData = new Object[3][4];

         tableData[0] = new Object[]{"1-1","1-2","左",true};

         tableData[1] = new Object[]{"2-1","2-2","右",false};

         tableData[2] = new Object[]{"3-1","3-2","左",true};

         Object[] tableColName = new Object[]{"第一列名","第二列名","第三列名","第四列名"};

         //创建表格模型

         DefaultTableModel defaultTableModel = new DefaultTableModel(tableData,tableColName);

         //实例化表格

         jTable = new JTable(defaultTableModel)

         {

             /**

              * 判断某一列是否为boolean类型，如果是：以复选框显示

              */

             @Override

             public Class<?> getColumnClass(int column)

             {

                 // TODO Auto-generated method stub

                 return jTable.getValueAt(0, column).getClass();

             }

             /**

              * 设置某一行、某一列、或某个单元格是否可编辑

              */

             @Override

             public boolean isCellEditable(int row, int column)

             {

                 // TODO Auto-generated method stub

                 if (row == 1 && column == 1)

                 {

                     return false;

                 }

                 else {

                     return true;

                 }

             }

             //表格的标题，必须配合滚动面板一起使用才能显示出来

         };

         //实例化滚动面板

         JScrollPane jScrollPane = new JScrollPane(jTable);

         this.add(jScrollPane);

         jPopupMenu = new JPopupMenu();

         jMenu = new JMenu("更改为：");

         jMenuItem = new MyJMenuItem("左",1);

         jMenuItem2 = new MyJMenuItem("右",1);

         jPopupMenu.add(jMenu);

         jMenu.add(jMenuItem);jMenu.add(jMenuItem2);

         jTable.setComponentPopupMenu(jPopupMenu);

         jPopupMenu.addPopupMenuListener(new PopupMenuListener()

         {

             /**

              * 设置个性化显示菜单的监听事件

              */

             @Override

             public void popupMenuWillBecomeVisible(PopupMenuEvent e)

             {

                 int index = jTable.getSelectedRow();

                 if (index != -1)

                 {

                     String str = jTable.getValueAt(index, 2).toString();

                     if (str.equals("左"))

                     {

                         jMenuItem.setVisible(false);

                         jMenuItem2.setVisible(true);

                     }

                     else {

                         jMenuItem.setVisible(true);

                         jMenuItem2.setVisible(false);

                     }

                 }

             }

             @Override

             public void popupMenuWillBecomeInvisible(PopupMenuEvent e)

             {

             }

             @Override

             public void popupMenuCanceled(PopupMenuEvent e)

             {

             }

         });

         //为菜单的每个jMenuItem加上监听器

 //        addListenerToJMenuItem(jMenu);

     }

 //    public void addListenerToJMenuItem(Container container)

 //    {

 //        for (Component component : container.getComponents())

 //        {

 //            if (component == JMenuItem.class)

 //            {

 //                System.out.println("1111111");

 //                JMenuItem jMenuItem = (JMenuItem) component;

 //                jMenuItem.addActionListener(new MenuItemListener());

 //            }

 //            else {

 //                System.out.println("2222222");

 //                JMenu jMenu = (JMenu) component;

 //                addListenerToJMenuItem(jMenu);

 //            }

 //        }

 //    }

     /**

      * 菜单项监听器

      * @author Administrator

      *

      */

     private class MenuItemListener implements ActionListener

     {

         @Override

         public void actionPerformed(ActionEvent e)

         {

             JMenuItem item = (JMenuItem)e.getSource();

             // TODO Auto-generated method stub

             //JOptionPane.showMessageDialog(null, item.getText());

             //判断是否有选中项

             if(jTable.getSelectedRow() != -1)

             {

                 //判断按钮

                 if (item == jMenuItem)

                 {

                     JOptionPane.showMessageDialog(null, "已更改为：右");

                 }

                 else {

                     JOptionPane.showMessageDialog(null, "已更改为：左");

                 }

             }

             else

             {

                 JOptionPane.showMessageDialog(null, "请选择修改的用户");

             }

         }

     }

     public static void main(String[] args)

     {

         JTableKnow_C jTableKnowC = new JTableKnow_C();

         jTableKnowC.setVisible(true);

     }

 }