JTable的View和TableModel的关系

进rtgj的第一个培训任务，是一个User Manager UI System,要求熟悉java.swing.*,java.awt.* ,以及sun开源项目组SwingLabs的org.jdesktop.swingx.*等 API——一个继承自swing的扩展可视化组件包。

第一天，接下任务来真是无从入手，看似做起来只要简单拖拽一下NetBeans的Matisse就可以了，然而对APIs几乎忘得差不多的我(想起倚天里面张老道要张教主学太极，看招式要到尽忘的地步，偶惊为天人之...)，开始一步步硬着头皮熟悉Netbeans的操作，swing和awt的窗口控件调用，上网狂找所以swingx的东西(http://swinglabs.org/index.jsp主要是这个SwingLabs的网站，从中找Demo看，Documentation看，Tutorial看)，等几乎过了两天了，仍然没头绪，不行了，临时开始Coding吧。

效果总是不断完善的，代码总是不断修补的，时间总是不断流失的，美剧总是不断错过的（何止，mm啦，什么网游啊，哪个不是统统错过咯），最后，终于写就了，Resolve了一下，然后Alva看了下，指出了一个可以说是关键性的，不可忽视的错误，原来对JTable的View和TableModel映射关系还是没搞懂，啥也别说，看代码吧。

 

 

/*
 * UserManagerUI.java
 *
  */

/**
 *When you click one row,the record will show on the textfields;
 * When you enter the textfields and click the "Add Record", the new column will be added;
 * When you click one row ,change the contens in the textfields and click the "Modify Record",the new informations will be recorded.
 * when you select rows and click the "Delete Record",the rows will be removed.
 *  @author   matthew
  */
import  java.util.logging.Level;
import  java.util.logging.Logger;
import  javax.swing.table. * ;
import  javax.swing. * ;
import  java.util. * ;
import  java.awt. * ;
import  java.awt.event. * ;
import  org.jdesktop.swingx.table. * ;
import  org.jdesktop.swingx. * ;
import  org.jdesktop.swingx.decorator. * ;

public   class  UserManagerUI  extends  javax.swing.JFrame {

     public  UserManagerUI() {
        initComponents();


        dTableModel  =   new  DefaultTableModel(p, n);
        jXTable1.setModel(dTableModel);
        jXTable1.packAll();

        jXTable1.setHighlighters( new  Highlighter[]{AlternateRowHighlighter.classicLinePrinter});

        jXTable1.addHighlighter( new  RolloverHighlighter(Color.ORANGE, Color.MAGENTA));
        jXTable1.setRolloverEnabled( true );

        jXTable1.setColumnControlVisible( true );
        jXTable1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    }

     /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
      */
     //  <editor-fold defaultstate="collapsed" desc=" Generated Code ">                          

     private   void  initComponents() {
        jFrame1  =   new  javax.swing.JFrame();
        jXPanel1  =   new  org.jdesktop.swingx.JXPanel();
        jXPanel2  =   new  org.jdesktop.swingx.JXPanel();
        jLabel2  =   new  javax.swing.JLabel();
        name  =   new  javax.swing.JTextField();
        jLabel3  =   new  javax.swing.JLabel();
        jLabel4  =   new  javax.swing.JLabel();
        jLabel5  =   new  javax.swing.JLabel();
        jLabel6  =   new  javax.swing.JLabel();
        jLabel7  =   new  javax.swing.JLabel();
        location  =   new  javax.swing.JTextField();
        age  =   new  javax.swing.JTextField();
        email  =   new  javax.swing.JTextField();
        phone  =   new  javax.swing.JTextField();
        jLabel8  =   new  javax.swing.JLabel();
        sex  =   new  javax.swing.JComboBox();
        marraged  =   new  javax.swing.JComboBox();
        jScrollPane2  =   new  javax.swing.JScrollPane();
        jXTable1  =   new  org.jdesktop.swingx.JXTable();
        jXPanel3  =   new  org.jdesktop.swingx.JXPanel();
        delR  =   new  javax.swing.JButton();
        exit  =   new  javax.swing.JButton();
        addR  =   new  javax.swing.JButton();
        modR  =   new  javax.swing.JButton();
        rowMode  =   new  javax.swing.JComboBox();
        jXPanel4  =   new  org.jdesktop.swingx.JXPanel();
        jLabel1  =   new  javax.swing.JLabel();

        GroupLayout jFrame1Layout  =   new  GroupLayout(jFrame1.getContentPane());
        jFrame1.getContentPane().setLayout(jFrame1Layout);
        jFrame1Layout.setHorizontalGroup(jFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGap( 0 ,  400 , Short.MAX_VALUE));
        jFrame1Layout.setVerticalGroup(jFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGap( 0 ,  300 , Short.MAX_VALUE));

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jLabel2.setText( " Name " );

        name.setName( "" );

        jLabel3.setText( " Location " );

        jLabel4.setText( " Age " );

        jLabel5.setText( " E-mail " );

        jLabel6.setText( " phone " );

        jLabel7.setText( " Marraged " );

        jLabel8.setText( " Sex " );

        sex.setModel( new  javax.swing.DefaultComboBoxModel( new  String[]{ " Male " ,  " Femal " }));

        marraged.setModel( new  javax.swing.DefaultComboBoxModel( new  String[]{ " Already " ,  " Never " }));

        jXTable1.setModel( new  javax.swing.table.DefaultTableModel( new  Object[][]{{ null ,  null ,  null ,  null },
                { null ,  null ,  null ,  null },
                { null ,  null ,  null ,  null },
                { null ,  null ,  null ,  null }},
                 new  String[]{ " Title 1 " ,  " Title 2 " ,  " Title 3 " ,  " Title 4 " }));
        jXTable1.addMouseListener( new  java.awt.event.MouseAdapter() {

                     public   void  mouseClicked(java.awt.event.MouseEvent evt) {
                        showRecord(evt);
                    }
                });

        jScrollPane2.setViewportView(jXTable1);

        GroupLayout jXPanel2Layout  =   new  GroupLayout(jXPanel2);
        jXPanel2.setLayout(jXPanel2Layout);
        jXPanel2Layout.setHorizontalGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel2Layout.createSequentialGroup().addContainerGap().addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addComponent(jScrollPane2, GroupLayout.DEFAULT_SIZE,  506 , Short.MAX_VALUE).addGroup(jXPanel2Layout.createSequentialGroup().addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING,  false ).addGroup(jXPanel2Layout.createSequentialGroup().addComponent(jLabel2).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(name, GroupLayout.PREFERRED_SIZE,  138 , GroupLayout.PREFERRED_SIZE)).addGroup(jXPanel2Layout.createSequentialGroup().addComponent(jLabel5).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(email))).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addComponent(jLabel6).addComponent(jLabel3)).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING,  false ).addComponent(phone).addComponent(location, GroupLayout.DEFAULT_SIZE,  145 , Short.MAX_VALUE)).addGap( 14 ,  14 ,  14 ).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel2Layout.createSequentialGroup().addComponent(jLabel4).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(age, GroupLayout.PREFERRED_SIZE,  29 , GroupLayout.PREFERRED_SIZE).addGap( 4 ,  4 ,  4 ).addComponent(jLabel8).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(sex, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)).addGroup(jXPanel2Layout.createSequentialGroup().addComponent(jLabel7).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(marraged, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))))).addContainerGap()));
        jXPanel2Layout.setVerticalGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel2Layout.createSequentialGroup().addContainerGap().addComponent(jScrollPane2, GroupLayout.PREFERRED_SIZE,  295 , GroupLayout.PREFERRED_SIZE).addGap( 23 ,  23 ,  23 ).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(jLabel2).addComponent(jLabel3).addComponent(jLabel4).addComponent(age, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addComponent(jLabel8).addComponent(sex, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addComponent(name, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addComponent(location, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel2Layout.createSequentialGroup().addGap( 6 ,  6 ,  6 ).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(jLabel5).addComponent(jLabel6).addComponent(email, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))).addGroup(jXPanel2Layout.createSequentialGroup().addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addGroup(jXPanel2Layout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(jLabel7).addComponent(marraged, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addComponent(phone, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))).addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));

        GroupLayout jXPanel1Layout  =   new  GroupLayout(jXPanel1);
        jXPanel1.setLayout(jXPanel1Layout);
        jXPanel1Layout.setHorizontalGroup(jXPanel1Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel1Layout.createSequentialGroup().addContainerGap().addComponent(jXPanel2, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addGap( 42 ,  42 ,  42 )));
        jXPanel1Layout.setVerticalGroup(jXPanel1Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel1Layout.createSequentialGroup().addContainerGap().addComponent(jXPanel2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));

        delR.setText( " Delete Record " );
        delR.addActionListener( new  java.awt.event.ActionListener() {

                     public   void  actionPerformed(java.awt.event.ActionEvent evt) {
                        deleteRecord(evt);
                    }
                });

        exit.setText( " Exit " );
        exit.addActionListener( new  java.awt.event.ActionListener() {

                     public   void  actionPerformed(java.awt.event.ActionEvent evt) {
                        exit(evt);
                    }
                });

        addR.setText( " Add Record " );
        addR.addActionListener( new  java.awt.event.ActionListener() {

                     public   void  actionPerformed(java.awt.event.ActionEvent evt) {
                        addRecord(evt);
                    }
                });

        modR.setText( " Modify Record " );
        modR.addActionListener( new  java.awt.event.ActionListener() {

                     public   void  actionPerformed(java.awt.event.ActionEvent evt) {
                        modifyRecord(evt);
                    }
                });

        rowMode.setModel( new  javax.swing.DefaultComboBoxModel( new  String[]{ " SINGLE_SELECTION " ,  " SINGLE_INTERVAL " ,  " MULTIPLE_INTERVAL " }));
        rowMode.addItemListener( new  java.awt.event.ItemListener() {

                     public   void  itemStateChanged(java.awt.event.ItemEvent evt) {
                        rowModeItemStateChanged(evt);
                    }
                });

        GroupLayout jXPanel3Layout  =   new  GroupLayout(jXPanel3);
        jXPanel3.setLayout(jXPanel3Layout);
        jXPanel3Layout.setHorizontalGroup(jXPanel3Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel3Layout.createSequentialGroup().addContainerGap().addComponent(addR).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(modR).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(delR).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(rowMode, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(exit, GroupLayout.DEFAULT_SIZE,  86 , Short.MAX_VALUE).addContainerGap()));
        jXPanel3Layout.setVerticalGroup(jXPanel3Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel3Layout.createSequentialGroup().addContainerGap().addGroup(jXPanel3Layout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(addR).addComponent(modR).addComponent(delR).addComponent(rowMode, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addComponent(exit)).addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));

        jLabel1.setFont( new  java.awt.Font( " Times New Roman " ,  0 ,  18 ));
        jLabel1.setText( " User Manager UI System " );

        GroupLayout jXPanel4Layout  =   new  GroupLayout(jXPanel4);
        jXPanel4.setLayout(jXPanel4Layout);
        jXPanel4Layout.setHorizontalGroup(jXPanel4Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel4Layout.createSequentialGroup().addGap( 169 ,  169 ,  169 ).addComponent(jLabel1).addContainerGap( 193 , Short.MAX_VALUE)));
        jXPanel4Layout.setVerticalGroup(jXPanel4Layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(jXPanel4Layout.createSequentialGroup().addContainerGap().addComponent(jLabel1).addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));

        GroupLayout layout  =   new  GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addContainerGap().addGroup(layout.createParallelGroup(GroupLayout.Alignment.TRAILING).addComponent(jXPanel1,  0 , GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(jXPanel4, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(jXPanel3, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addContainerGap()));
        layout.setVerticalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(layout.createSequentialGroup().addContainerGap().addComponent(jXPanel4, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(jXPanel1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED,  12 , Short.MAX_VALUE).addComponent(jXPanel3, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addContainerGap()));
        pack();
    } //  </editor-fold>                        

     private   void  rowModeItemStateChanged(java.awt.event.ItemEvent evt) {
        String modeSelected  =  rowMode.getSelectedItem().toString();

         if  (evt.getStateChange()  ==  ItemEvent.SELECTED) {
             if  (modeSelected.equals( " SINGLE_SELECTION " )) {
                jXTable1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
            }  else  {
                 if  (modeSelected.equals( " SINGLE_INTERVAL " )) {
                    jXTable1.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
                }  else  {
                     if  (modeSelected.equals( " MULTIPLE_INTERVAL " )) {
                        jXTable1.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
                    }
                }
            }
        }
    }

     private   void  showRecord(java.awt.event.MouseEvent evt) {
         int  i1  =  jXTable1.getSelectedRow();
         int  i2  =   0 ;
        name.setText(dTableModel.getValueAt(i1, i2 ++ ).toString());
        location.setText(dTableModel.getValueAt(i1, i2 ++ ).toString());
        age.setText(dTableModel.getValueAt(i1, i2 ++ ).toString());
        email.setText(dTableModel.getValueAt(i1, i2 ++ ).toString());
        phone.setText(dTableModel.getValueAt(i1, i2 ++ ).toString());
        marraged.setSelectedItem(dTableModel.getValueAt(i1, i2 ++ ).toString());
        sex.setSelectedItem(dTableModel.getValueAt(i1, i2 ++ ).toString());
     //  TODO add your handling code here:
    }

     private   void  modifyRecord(java.awt.event.ActionEvent evt) {
        dTableModel.removeRow(jXTable1.getSelectedRow());
        add();
     // dTableModel.getValueAt() //  TODO add your handling code here:

    }

     private   void  exit(java.awt.event.ActionEvent evt) {
        System.exit( 0 );
    }

     private   void  deleteRecord(java.awt.event.ActionEvent evt) {

         int [] sRows  =  jXTable1.getSelectedRows();
         for  ( int  i  =  sRows.length  -   1 ; i  >=   0 ; i -- ) {
            dTableModel.removeRow(jXTable1.convertRowIndexToModel(sRows[i]));
        }
     /*
         逆序;view 和 TableModel之间的解藕关系;
        for(int i=0;i<sRows.length;i++){
            dTableModel.removeRow(sRows[i]);
            sRows[i+1] = sRows[i+1]-i-1;            
         }
          */


     /* jXTable1.revalidate(); */

    }

     private   void  add() {
        record  =   new  Vector();
        record.add(name.getText());
        record.add(location.getText());
        record.add(age.getText());
        record.add(email.getText());
        record.add(phone.getText());
        record.add(marraged.getSelectedItem());
        record.add(sex.getSelectedItem());


        dTableModel.addRow(record);
        jXTable1.revalidate();
    }

     private   void  addRecord(java.awt.event.ActionEvent evt) {
        add();
    }
     //  Variables declaration - do not modify                     

     private  javax.swing.JButton addR;
     private  javax.swing.JTextField age;
     private  javax.swing.JButton delR;
     private  javax.swing.JTextField email;
     private  javax.swing.JButton exit;
     private  javax.swing.JFrame jFrame1;
     private  javax.swing.JLabel jLabel1;
     private  javax.swing.JLabel jLabel2;
     private  javax.swing.JLabel jLabel3;
     private  javax.swing.JLabel jLabel4;
     private  javax.swing.JLabel jLabel5;
     private  javax.swing.JLabel jLabel6;
     private  javax.swing.JLabel jLabel7;
     private  javax.swing.JLabel jLabel8;
     private  javax.swing.JScrollPane jScrollPane2;
     private  org.jdesktop.swingx.JXPanel jXPanel1;
     private  org.jdesktop.swingx.JXPanel jXPanel2;
     private  org.jdesktop.swingx.JXPanel jXPanel3;
     private  org.jdesktop.swingx.JXPanel jXPanel4;
     private  org.jdesktop.swingx.JXTable jXTable1;
     private  javax.swing.JTextField location;
     private  javax.swing.JComboBox marraged;
     private  javax.swing.JButton modR;
     private  javax.swing.JTextField name;
     private  javax.swing.JTextField phone;
     private  javax.swing.JComboBox rowMode;
     private  javax.swing.JComboBox sex;
     //  End of variables declaration                   

     private  Vector record;
     // private String[] rowModes = {"ListSelectionModel.SINGLE_SELECTION","ListSelectionModel.SINGLE_INTERVAL_SELECTION","MULTIPLE_INTERVAL_SELECTION"};

     private  DefaultTableModel dTableModel;
     private  Object[][] p  =  {{ " Mike " ,  " Taipei " ,  new  Integer( 30 ),  new  String( " [email protected] " ),  new  String( " 3243-434-432525 " ),  new  String( " Never " ),  new  String( " Female " )},
            { " Jack " ,  " ChiaYi " ,  new  Integer( 24 ),  new  String( " [email protected] " ),  new  String( " 3113-434-433425 " ),  new  String( " Already " ),  new  String( " Male " )},
            { " Mary " ,  " Beijing " ,  new  Integer( 34 ),  new  String( " [email protected] " ),  new  String( " 3103-434-433405 " ),  new  String( " Never " ),  new  String( " Female " )},
            { " Tom " ,  " London " ,  new  Integer( 26 ),  new  String( " [email protected] " ),  new  String( " 3013-434-433025 " ),  new  String( " Already " ),  new  String( " Male " )},
            { " White