dateandtime.java

本次实验中用Java实现的Calendar具有跨平台运行能力

/**
 * 
 */
package edu.swjtu.sist.java.calendar;

import java.util.*;
import javax.swing.*;

import java.awt.*;
import java.text.SimpleDateFormat;
import java.awt.event.*;

/**
 * @author [e-mail]
 * @version 1.0
 */

public class DateAndTime extends JFrame implements ActionListener,
        MouseListener, ItemListener, AdjustmentListener
{
    
    private JTabbedPane tabPanel = new JTabbedPane();
    
    private LayoutPanel layoutPanel = new LayoutPanel();
    
    private TimeZonePanel timezonePanel = new TimeZonePanel();
    
    private InternetTimePanel internetTimePanel = new InternetTimePanel();
    
    private JPanel pn3 = new JPanel();
    
    private JButton confirmBtn = new JButton("   确定   ");
    
    private JButton cancelBtn = new JButton("   取消   ");
    
    private JButton applyBtn = new JButton("   应用   ");
    
    private DateCalendarPanel dateCalendarPanel = new DateCalendarPanel();;
    
    private ClockPanel clockPanel = new ClockPanel();
    
    // 时区选择菜单
    private JComboBox timezoneBox = new JComboBox();
    
    // 时间属性变量
    private Calendar today;
    
    private int year, month, day, week, hour, minute, second, m_second;
    
    // protected boolean hasModified = false;
    public DateAndTime()
    {
        
        today = Calendar.getInstance();//
        
        year = today.get(Calendar.YEAR);// 当前年
        month = today.get(Calendar.MONTH);// 月
        day = today.get(Calendar.DATE);// 日
        hour = today.get(Calendar.HOUR);// 时
        minute = today.get(Calendar.MINUTE);// 分
        second = today.get(Calendar.SECOND);// 秒
        
        tabPanel.addTab("时间和日期", layoutPanel);
        tabPanel.addTab("时区", timezonePanel);
        tabPanel.addTab("Internet 时间", internetTimePanel);
        
        tabPanel.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
        tabPanel.setBackground(SystemColor.controlHighlight);
        
        timezonePanel.add(timezoneBox);
        layoutPanel.setLayout(null);
        layoutPanel.setSize(300, 200);
        // add by lee
        // this.dateCalendarPanel.addMouseListener(this);
        layoutPanel.add(dateCalendarPanel);
        dateCalendarPanel.setBounds(new Rectangle(20, 38, 175, 145));
        
        timezonePanel.setLocation(40, 40);
        this.setLocation(300, 100);
        this.getContentPane().add(tabPanel, BorderLayout.CENTER);
        this.getContentPane().add(pn3, BorderLayout.SOUTH);
        pn3.setLayout(new FlowLayout(FlowLayout.RIGHT, 10, 3));
        pn3.add(confirmBtn);
        pn3.add(cancelBtn);
        pn3.add(applyBtn);
        
        // 所有组件都加上判断时间是更新时间的标志
        pn3.addMouseListener(this);
        timezonePanel.addMouseListener(this);
        dateCalendarPanel.addMouseListener(this);
        clockPanel.addMouseListener(this);
        
        applyBtn.setEnabled(false);
        confirmBtn.addActionListener(this);
        cancelBtn.addActionListener(this);
        applyBtn.addActionListener(this);
        
        this.setSize(410, 330);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setResizable(false);
        
        clockPanel.setBounds(new Rectangle(225, 30, 160, 180));
        clockPanel.setBackground(layoutPanel.getBackground());
        
        layoutPanel.add(clockPanel);
        clockPanel.start();
        
        timezoneBox.setBounds(new Rectangle(15, 15, 370, 20));
        
        timezoneBox.addItem("GMT+8:00");
        timezoneBox.addItem("GMT+9:00");
        timezoneBox.addItem("GMT+10:00");
        timezoneBox.addItem("GMT+11:00");
        timezoneBox.addItem("GMT+12:00");
        timezoneBox.addItem("GMT+13:00");
        timezoneBox.addItem("GMT-12:00");
        timezoneBox.addItem("GMT-11:00");
        timezoneBox.addItem("GMT-10:00");
        timezoneBox.addItem("GMT-9:00");
        timezoneBox.addItem("GMT-8:00");
        timezoneBox.addItem("GMT-7:00");
        timezoneBox.addItem("GMT-6:00");
        timezoneBox.addItem("GMT-5:00");
        timezoneBox.addItem("GMT-4:00");
        timezoneBox.addItem("GMT-3:00");
        timezoneBox.addItem("GMT-2:00");
        timezoneBox.addItem("GMT-1:00");
        timezoneBox.addItem("GMT+1:00");
        timezoneBox.addItem("GMT+2:00");
        timezoneBox.addItem("GMT+3:00");
        timezoneBox.addItem("GMT+4:00");
        timezoneBox.addItem("GMT+5:00");
        timezoneBox.addItem("GMT+6:00");
        timezoneBox.addItem("GMT+7:00");
        timezoneBox.addItemListener(this);
        timezonePanel.setLayout(null);
        timezonePanel.setBackground(SystemColor.controlLtHighlight);
        this.setVisible(true);
    }
    
    public void paintComponent(Graphics g)
    {
        ;
        
    }
    
    public void actionPerformed(ActionEvent e)
    {
        if (e.getSource() == cancelBtn)
            System.exit(0);
        if (e.getSource() == this.confirmBtn)
        {
            WindowsTime.hasModified = true;
            today = dateCalendarPanel.calendar;
            this.setTodayTimeZone();
            internetTimePanel.setSystemTime(today);
            System.exit(0);
            // repaint();
        }
        if (e.getSource() == this.applyBtn)
        {
            WindowsTime.hasModified = false;
            today = dateCalendarPanel.calendar;
            this.setTodayTimeZone();
            internetTimePanel.setSystemTime(today);
            this.applyBtn.setEnabled(false);
        }
        
    }
    
    private void setTodayTimeZone()
    {
        int i = timezoneBox.getSelectedIndex();
        TimeZone tz = TimeZone.getDefault();
        // int row=tz.getRawOffset();
        // JOptionPane.showConfirmDialog(this, ""+row/(3600*1000));
        if (i < 6)
            i = i + 8;
        else if (i > 5 && i < 18)
            i = i - 18;
        else
            i = i - 17;
        tz.setRawOffset(i * 3600 * 1000);
        // JOptionPane.showConfirmDialog(this, ""+i);
        today.setTimeZone(tz);
    }
    
    public void itemStateChanged(ItemEvent e)
    {
        if (e.getSource() == timezoneBox)
        {
            int i = timezoneBox.getSelectedIndex() * 15;
            timezonePanel.reset(i);
            WindowsTime.hasModified = true;
        }
    }
    
    private void setApply()
    {
        if (WindowsTime.hasModified == true)
            this.applyBtn.setEnabled(true);
        else
            this.applyBtn.setEnabled(false);
    }
    
    public void mouseClicked(MouseEvent e)
    {
        this.setApply();
    }
    
    public void mouseEntered(MouseEvent e)
    {
        this.setApply();
    }
    
    public void mouseExited(MouseEvent e)
    {
        this.setApply();
    }
    
    public void mousePressed(MouseEvent e)
    {
        this.setApply();
    }
    
    public void mouseReleased(MouseEvent e)
    {
        this.setApply();
    }
    
    public void adjustmentValueChanged(AdjustmentEvent e)
    {
        ;
    }
    
    public static void main(String argv[])
    {
        try
        {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        }
        catch (ClassNotFoundException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        catch (InstantiationException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        catch (IllegalAccessException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        catch (UnsupportedLookAndFeelException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        new DateAndTime();
    }
}