tableframe.java~27~

一个jTable的示例文件

package jtabledemo;

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.table.*;
import java.util.*;
import jtabledemo.*;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2004</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class TableFrame
    extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  JPanel jPanel1 = new JPanel();
  BorderLayout borderLayout2 = new BorderLayout();
  JScrollPane jScrollPane1 = new JScrollPane();
  JTable table = new JTable();

  DefaultTableModel tableModel = new DefaultTableModel();
  Vector data = new Vector();
  Vector columnNames;
  JPopupMenu popupMenu = new JPopupMenu();
  JMenuItem menuAdd = new JMenuItem();
  JMenuItem menuEdit = new JMenuItem();
  JMenuItem menuDelete = new JMenuItem();
  JMenuItem menuExit = new JMenuItem();


  public TableFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  public static void main(String[] args) {
    TableFrame tableframe = new TableFrame();
  }

  private void jbInit() throws Exception {
    contentPane = (JPanel)this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("Demo how to use JTable");
    jPanel1.setLayout(borderLayout2);

    menuAdd.setText("Add");
    menuAdd.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuAdd_actionPerformed(e);
      }
    });

    menuEdit.setText("Edit");
    menuEdit.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuEdit_actionPerformed(e);
      }
    });

    menuDelete.setText("Delete");
    menuDelete.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuDelete_actionPerformed(e);
      }
    });
    menuExit.setText("Exit");
    contentPane.add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(jScrollPane1, BorderLayout.CENTER);
    jScrollPane1.getViewport().add(table, null);
    popupMenu.add(menuAdd);
    popupMenu.add(menuEdit);
    popupMenu.add(menuDelete);
    popupMenu.addSeparator();
    popupMenu.add(menuExit);

    table.addMouseListener(new MouseAdapter() {
      public void mousePressed(MouseEvent  e) {
        table_mousePressed(e);
      }
    });

    table.addMouseListener(new MouseAdapter() {
      public void mouseReleased(MouseEvent e) {
        table_mouseReleased(e);
      }
    });

    initDataSource();
    initTableModel();
    initTableLook();

  }//jbInit();

  protected void proecessWindowEvent(WindowEvent e){
    super.processWindowEvent(e);
    if(e.getID() == WindowEvent.WINDOW_CLOSING){
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      System.out.println("Printing this line after shut down");
      System.exit(0);

    }
  }

  void initDataSource(){
    for(int i = 0; i < 10; i++){
      Floor floor = new Floor();
      floor.setDescription("Description" + i);
      floor.setFormula("Formula" + i);
      floor.setArea(new Double(i));

      Vector v = floor.getDataVector();
      data.add(v);
    }
  //?
    columnNames = Floor.getColumnNameVector();
   }

   void initTableModel(){
     tableModel.setDataVector(data,columnNames);
     table.setModel(tableModel);
   }

   void initTableLook(){
     table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
   }

   void showPopupMenu(int x, int y){
     popupMenu.show(table,x,y);
   }

   void table_mouseReleased(MouseEvent e){
     if(e.isPopupTrigger()){
       showPopupMenu(e.getX(),e.getY());
     }
   }
   void table_mousePressed(MouseEvent e){
     if(SwingUtilities.isRightMouseButton(e)){
       Point point = e.getPoint();
       int row = table.rowAtPoint(point);
       int column = table.columnAtPoint(point);
 //      table.changeSelection(row,column,true,false);
     }
   }

   void menuAdd_actionPerformed(ActionEvent e){
     EditDialog dlg = new EditDialog();
     dlg.initDialog(EditDialog.NEW_OPERATION,null);
     showDialog(dlg);
     if(dlg.isOK){
       addRecord(dlg.getUpdatedFloor());
       table.revalidate();
       table.repaint();
     }
   }

   //将Dialog居中显示
void showDialog(JDialog dlg){
  Dimension dlgSize = dlg.getPreferredSize();
  Dimension frmSize = getSize();
  Point loc = getLocation();
  dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
  dlg.setModal(true);
  dlg.setVisible(true);
}

void menuEdit_actionPerformed(ActionEvent e) {
  //获取当前选中的行，然后取出相应的向量对象，转换成为Floor对象。
  int row = table.getSelectedRow();
  int column = table.getSelectedColumn();
  if (row==1||column==-1) return;
  Vector v = (Vector)data.elementAt(row);
  Floor floorObj = Floor.parseFloor(v);

  EditDialog dlg = new EditDialog();
  //在显示对话框前必须指定当前的操作是哪类操作，例如删除还是添加还是修改。
  dlg.initDialog(EditDialog.EDIT_OPERATION,floorObj);
  showDialog(dlg);
  if (dlg.isOK){
    editRecord(dlg.getUpdatedFloor(),row);
    table.revalidate();
    table.repaint();
  }

}

void menuDelete_actionPerformed(ActionEvent e) {
  //获取当前选中的行，然后取出相应的向量对象，转换成为Floor对象。
  int row = table.getSelectedRow();
  int column = table.getSelectedColumn();
  if (row==1||column==-1) return;
  Vector v = (Vector)data.elementAt(row);
  Floor floorObj = Floor.parseFloor(v);

  EditDialog dlg = new EditDialog();
  //在显示对话框前必须指定当前的操作是哪类操作，例如删除还是添加还是修改。
  dlg.initDialog(EditDialog.DELETE_OPERATION,floorObj);
  showDialog(dlg);
  if (dlg.isOK){
    deleteRecord(row);
    table.revalidate();
    table.repaint();
  }
}


/**
 * Floor对象添加入表格模型内，在实际过程中需要加入对数据库的存盘
 * @param floor - 需要添加入表格模型内的Floor对象
 */
void addRecord(Floor floor){
  data.add(floor.getDataVector());
}

/**
 * 编辑指定行的模型数据，在现实中除了显示的数据后台外，还需要更新数据库
 * @param floor - 需要编辑的Floor对象
 * @param index - 指定的需要更改的行索引
 */
void editRecord(Floor floor,int index){
  Vector v =floor.getDataVector();
  data.setElementAt(v,index);
}

/**
 * 删除数据模型里面指定行，在现实中除了显示的数据后台外，还需要更新数据库
 * @param index - 需要删除的行索引
 */
void deleteRecord(int  index){
  data.removeElementAt(index);
}

}