ordertrackerapplet.java

java在线商店的源代码。编写十分规范的哦

/**
 * Copyright (c) 1996-2004 Borland Software Corporation.  All Rights Reserved.
 * 
 * This SOURCE CODE FILE, which has been provided by Borland Software as part
 * of a Borland Software product for use ONLY by licensed users of the product,
 * includes CONFIDENTIAL and PROPRIETARY information of Borland Software.  
 *
 * USE OF THIS SOFTWARE IS GOVERNED BY THE TERMS AND CONDITIONS 
 * OF THE LICENSE STATEMENT AND LIMITED WARRANTY FURNISHED WITH
 * THE PRODUCT.
 *
 * IN PARTICULAR, YOU WILL INDEMNIFY AND HOLD BORLAND SOFTWARE, ITS
 * RELATED COMPANIES AND ITS SUPPLIERS, HARMLESS FROM AND AGAINST ANY
 * CLAIMS OR LIABILITIES ARISING OUT OF THE USE, REPRODUCTION, OR
 * DISTRIBUTION OF YOUR PROGRAMS, INCLUDING ANY CLAIMS OR LIABILITIES
 * ARISING OUT OF OR RESULTING FROM THE USE, MODIFICATION, OR
 * DISTRIBUTION OF PROGRAMS OR FILES CREATED FROM, BASED ON, AND/OR
 * DERIVED FROM THIS SOURCE CODE FILE.
 */
//------------------------------------------------------------------------------
// Copyright (c) 1996-2004 Borland Software Corporation.  All Rights Reserved.
//------------------------------------------------------------------------------

package com.borland.samples.ordertracker;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
import javax.swing.*;

import com.borland.dbswing.*;
import com.borland.dx.sql.dataset.*;
import com.borland.dx.dataset.*;

/**
 * OrderTrackApplet defines the Applet subclass and user interface.  Customers
 * would use this applet in a web-browser to find information about a recent
 * order they had placed.  Given an order tracking number, they can find out
 * status information, order and shipping dates, and the amount paid on the
 * order.
 * Note that this file also contains a frame wrapper that allows this Applet
 * to be run as a standalone application.  Because an Applet is a subclass of
 * panel, it can simply be wrapped in a frame as shown below so that it can
 * be run as either Applet in a browser or standalone application.
 */
public class OrderTrackerApplet extends JApplet {
  boolean isStandalone = false;
  private QueryDataSet qdsPOrders;
  private ParameterRow pRow;

  JPanel contentPane;
  // Instantiate panels
  JPanel getStatusPanel = new JPanel();
  JPanel orderItemsPanel = new JPanel();

  // Instantiate field controls components
  JdbTextField orderNumberField = new JdbTextField();
  JLabel orderNumberLabel = new JLabel();
  JButton statusButton = new JButton();
  JdbTextField orderStatusField = new JdbTextField();
  JLabel orderStatusLabel = new JLabel();
  JdbTextField orderDateField = new JdbTextField();
  JLabel orderDateLabel = new JLabel();
  JLabel shipDateLabel = new JLabel();
  JdbTextField shipDateField = new JdbTextField();
  JdbTextField amountField = new JdbTextField();
  JLabel amountLabel = new JLabel();
  ResourceBundle res = Res.getBundle("com.borland.samples.ordertracker.Res");
  BorderLayout borderLayout1 = new BorderLayout();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  JLabel titleGraphic = new JLabel();
  JLabel statusBar = new JLabel();


  /**
   * Get a parameter value
   * @param key String
   * @param def String
   * @return String
   */
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  /**
   * Construct the applet
   */
  public OrderTrackerApplet() {
  }

  /**
   * Initialize the applet
   */
  public void init() {
    try {
        // Initialize form objects
        jbInit();
        // Initialize data objects
        initData();

    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  /**
   * @throws Exception exception
   */
  private void jbInit() throws Exception{
    contentPane = (JPanel) this.getContentPane();
    this.setSize(new Dimension(414, 176));

    orderStatusField.setColumnName("Status");
    orderStatusField.setEditable(false);
    orderStatusField.setColumns(10);
    orderStatusLabel.setPreferredSize(new Dimension(76, 21));
    orderStatusLabel.setHorizontalAlignment(SwingConstants.RIGHT);
    orderStatusLabel.setText(res.getString("Order_Status"));

    orderDateField.setColumnName("orderDate");
    orderDateField.setEditable(false);
    orderDateField.setColumns(10);
    orderDateLabel.setPreferredSize(new Dimension(65, 21));
    orderDateLabel.setHorizontalAlignment(SwingConstants.RIGHT);
    orderDateLabel.setText(res.getString("Order_Date"));

    shipDateLabel.setPreferredSize(new Dimension(57, 21));
    shipDateLabel.setHorizontalAlignment(SwingConstants.RIGHT);
    shipDateLabel.setHorizontalTextPosition(SwingConstants.RIGHT);
    shipDateLabel.setText(res.getString("Ship_Date"));
    shipDateField.setEditable(false);
    shipDateField.setColumns(10);
    shipDateField.setColumnName("shipDate");

    orderNumberLabel.setHorizontalAlignment(SwingConstants.LEFT);
    orderNumberLabel.setText(res.getString("Tracking_Number"));

    statusBar.setText(" ");
    statusButton.setText(res.getString("Show_Status"));
    statusButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        statusButton_actionPerformed(e);
      }
    });

    contentPane.setLayout(borderLayout1);
    getStatusPanel.setLayout(gridBagLayout1);
    titleGraphic.setHorizontalAlignment(SwingConstants.CENTER);
    titleGraphic.setIcon(new ImageIcon(this.getClass().getResource("images/status.gif")));
    amountField.setColumns(10);
    contentPane.add(getStatusPanel, BorderLayout.NORTH);
    getStatusPanel.add(orderNumberLabel, new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(5, 5, 5, 5), 0, 0));
    getStatusPanel.add(orderNumberField, new GridBagConstraints(1, 1, 3, 1, 1.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(5, 0, 5, 5), 0, 0));
    getStatusPanel.add(statusButton, new GridBagConstraints(4, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(5, 5, 5, 5), 0, 0));
    getStatusPanel.add(titleGraphic, new GridBagConstraints(0, 0, 5, 1, 1.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(orderItemsPanel, BorderLayout.CENTER);
    orderItemsPanel.add(orderStatusLabel, null);
    orderItemsPanel.add(orderStatusField, null);
    orderItemsPanel.add(orderDateLabel, null);
    orderItemsPanel.add(orderDateField, null);
    orderItemsPanel.add(amountLabel, null);
    orderItemsPanel.add(amountField, null);
    orderItemsPanel.add(shipDateLabel, null);
    orderItemsPanel.add(shipDateField, null);
    contentPane.add(statusBar, BorderLayout.SOUTH);

    amountLabel.setHorizontalAlignment(SwingConstants.RIGHT);
    amountLabel.setText(res.getString("Amount_Paid"));
    amountField.setColumnName("amtPaid");
    amountField.setEditable(false);

  }

  /**
   * Start the applet
   */

      public void start() {
  }

  /**
   * Stop the applet
   */
  public void stop() {
  }

  /**
   * Destroy the applet
   */
  public void destroy() {
  }

  /**
   * Get Applet information
   * @return String
   */
  public String getAppletInfo() {
    return "Applet Information";
  }

  /**
   * Get parameter info
   * @return String[][]
   */

      public String[][] getParameterInfo() {
    return null;
  }


  /**
   * Main method
   * @param args String[]
   */

      static public void main(String[] args) {
    OrderTrackerApplet applet = new OrderTrackerApplet();

    // Running as an application
    applet.isStandalone = true;

    // Setup the container frame
    JFrame frame = new JFrame();
    frame.getContentPane().add(applet, BorderLayout.CENTER);

    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent evt) {
        System.exit(0);
      };
    });

    // Setup the applet
    applet.init();
    applet.start();

    // Pack the frame
    frame.pack();

    //Center the window
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension frameSize = frame.getSize();
    if (frameSize.height > screenSize.height)
      frameSize.height = screenSize.height;
    if (frameSize.width > screenSize.width)
      frameSize.width = screenSize.width;
    frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);

    // Show the frame containing the applet.
    frame.setVisible(true);
  }


  private void initData() {

    // Connect to the database and retrieve data set from DataModule
    try {
        OrderTrackerDataModule dataModule = OrderTrackerDataModule.getDataModule();
        dataModule.dbConnect();  // Makes a connection to the database
        qdsPOrders = dataModule.getOrdersDataSet();
        pRow = dataModule.getOrderNumParameterRow();
    }
    catch (DataSetException ex) {
        ex.printStackTrace();
    }
  }

  void statusButton_actionPerformed(ActionEvent e) {
    try {
      if (orderNumberField.getText().equals("")) {
        statusBar.setText(res.getString("Please_enter"));
        orderStatusField.setDataSet(null);
        orderStatusField.setText("");
        orderDateField.setDataSet(null);
        orderDateField.setText("");
        shipDateField.setDataSet(null);
        shipDateField.setText("");
        amountField.setDataSet(null);
        amountField.setText("");
        return;
      }
      statusBar.setText(" ");
      // Set the ORDERTRACKNUM parameter to the value entered in the field
      pRow.setString("ORDERTRACKNUM", orderNumberField.getText());
      // Get the data for that record
      qdsPOrders.executeQuery();
      // Associate each result field with the dataset
      orderStatusField.setDataSet(qdsPOrders);
      orderDateField.setDataSet(qdsPOrders);
      shipDateField.setDataSet(qdsPOrders);
      amountField.setDataSet(qdsPOrders);
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

} // END class OrderTrackApplet