日历

package cn.edu.csu;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Calendar;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class ClockView extends JFrame{
    private JPanel mainPanel = null;
    private JPanel childPanel1 = null;
    private JPanel childPanel2 = null;
    private JPanel childPanel3 = null;
   
    private JComboBox jComboBox = null;
    private JTextField jTextField = null;
    private JTextField text_Show_Time = null;
   
    private JLabel jLabel1 = null;
    private JLabel jLabel2 = null;
    private JLabel jLabel3 = null;
    private JLabel jLabel4 = null;
    private JLabel jLabel5 = null;
    private JLabel jLabel6 = null;
    private JLabel jLabel7 = null;
    private JLabel[] jLabel_date = new JLabel[42];
    private JLabel Label_clock = null;
   
    private JButton Button_Up = null;
    private JButton Button_Down = null;
    private JButton refresh_Button = null;
   
    public ClockView(){
      super();
      initialize();
    }
    /**
     * 添加下拉框事件
     * @return
     */
    private JComboBox getJComboBox(){
      if(jComboBox == null){
        jComboBox = new JComboBox();
        jComboBox.setBounds(new java.awt.Rectangle(10, 8, 90, 25));
        for(int i = 1; i <= 12; i++){
          jComboBox.addItem(String.valueOf(i));
        }
        Calendar cl = Calendar.getInstance();
//        int curr_month = cl.get(cl.MONTH) + 1;
        jComboBox.setSelectedIndex(cl.get(cl.MONTH));
        jComboBox.addItemListener(new ItemListener(){
          public void itemStateChanged(ItemEvent e) {
            repainTheClock();          
          }        
        });
      }
      return jComboBox;
    }
    /**
     * 添加回车事件
     * @return
     */
    private JTextField getJTextField(){
      if(jTextField == null){
        jTextField = new JTextField();
        jTextField.setBounds(new java.awt.Rectangle(100, 8, 85, 25));
        jTextField.addActionListener(new java.awt.event.ActionListener(){
          public void actionPerformed(ActionEvent e) {
            jTextField.setText(jTextField.getText().trim());
            repainTheClock();
          }      
        });
      }
      return jTextField;
    }
   
    private JTextField getTextTime(){
      if(text_Show_Time == null){
        text_Show_Time = new JTextField();
        text_Show_Time.setBounds(new java.awt.Rectangle(241,201,153,24));
      }
      return text_Show_Time;
    }
   
    /**
     * 添加上下钮事件
     * @return
     */
   
    private JButton getButton_Up() {
      if (Button_Up == null) {
        Button_Up = new JButton();
        Button_Up.setBounds(new java.awt.Rectangle(184,8,23,13));
        Button_Up.setText("");
        ImageIcon up = new ImageIcon("icon/up.jpg", "year up");
        Button_Up.setIcon(up);
        Button_Up.addActionListener(new ActionListener(){
          public void actionPerformed(ActionEvent e) {
            int text = Integer.parseInt(jTextField.getText().trim());
            jTextField.setText(String.valueOf(text + 1));
            repainTheClock();           
          }
         
        });
      }
      return Button_Up;
    }
   
    private JButton getButton_Down() {
      if (Button_Down == null) {
        Button_Down = new JButton();
        Button_Down.setBounds(new java.awt.Rectangle(184,20,23,13));
        ImageIcon down = new ImageIcon("icon/down.jpg", "year down");
        Button_Down.setIcon(down);
        Button_Down.addActionListener(new ActionListener(){
          public void actionPerformed(ActionEvent e) {
            int text = Integer.parseInt(jTextField.getText().trim());
            jTextField.setText(String.valueOf(text - 1));
            repainTheClock();  
          }        
        });
      }
      return Button_Down;
    }
   
    private JButton getRefresh_Button() {
      if (refresh_Button == null) {
        refresh_Button = new JButton();
        refresh_Button.setBounds(new java.awt.Rectangle(270,230,85,26));
        refresh_Button.setText("刷新");
        refresh_Button.addActionListener(new ActionListener(){
          public void actionPerformed(ActionEvent e) {
            repainTheClock();         
          }      
        });
      }
      return refresh_Button;
    }  
   
    private JPanel getChildPanel1(){
      if(childPanel1 == null){
        childPanel1 = new JPanel();
        childPanel1.setBounds(new java.awt.Rectangle(10,40,206,20));
       
        jLabel1 = new JLabel(" 日");
        jLabel2 = new JLabel(" 一");
        jLabel3 = new JLabel(" 二");
        jLabel4 = new JLabel(" 三");
        jLabel5 = new JLabel(" 四");
        jLabel6 = new JLabel(" 五");
        jLabel7 = new JLabel(" 六");
       
        GridLayout cl_cp1 = new GridLayout(1, 7);
        childPanel1.setLayout(cl_cp1);
       
        childPanel1.add(jLabel1, null);
        childPanel1.add(jLabel2, null);
        childPanel1.add(jLabel3, null);
        childPanel1.add(jLabel4, null);
        childPanel1.add(jLabel5, null);
        childPanel1.add(jLabel6, null);
        childPanel1.add(jLabel7, null);
      }
      return childPanel1;
    }
   
   
    private JPanel getChildPanel2(){
      if(childPanel2 == null){
        childPanel2 = new JPanel();
        childPanel2.setBounds(new java.awt.Rectangle(0,0,240,260));
      }
//      childPanel2.setName("日期");
      childPanel2.setLayout(null);
      childPanel2.add(getJComboBox(), null);
      childPanel2.add(getJTextField(), null);
//      childPanel2.add(getJScrollBar(), null);
      childPanel2.add(getChildPanel1(),null);
      childPanel2.add(getChildPanel3(), null);
      childPanel2.add(getButton_Up(), null);
      childPanel2.add(getButton_Down(), null);    
      return childPanel2;
    }
   
    private JPanel getMainPanel(){
      if(mainPanel == null){
        Label_clock = new JLabel();
        Label_clock.setBounds(new java.awt.Rectangle(241,10,152,181));
        Label_clock.setText("");
        mainPanel = new JPanel();
        mainPanel.setBounds(new java.awt.Rectangle(0,0,400,200));
//        FlowLayout fl_mp = new FlowLayout();
//        mainPanel.setLayout(fl_mp);      
        mainPanel.setLayout(null);
        mainPanel.add(getChildPanel1(), null);
        mainPanel.add(getChildPanel2(), null);
        ImageIcon clockIcon = new ImageIcon("icon/clock1.jpg", "about clock");
        Label_clock.setIcon(clockIcon);
        mainPanel.add(Label_clock, null);
        mainPanel.add(getTextTime(), null);
        mainPanel.add(getRefresh_Button(), null);
      }
      return mainPanel;
    }
   
   
    private JPanel getChildPanel3(){
      if(childPanel3 == null){
        childPanel3 = new JPanel();
        childPanel3.setBounds(new java.awt.Rectangle(14,63,204,177));
        GridLayout gl = new GridLayout(6, 7);
        childPanel3.setLayout(gl);
        for(int i = 0; i < 6; i++){
          for(int j = 0; j < 7; j++){
            int k = i * 7 + j;
            jLabel_date[k] = new JLabel();
            childPanel3.add(jLabel_date[k]);
          }
        }
      }
      return childPanel3;
    }
   
    public void repainTheClock(){
      text_Show_Time.setText("");
      for(int i = 0; i < 6; i++){
        for(int j = 0; j < 7; j++){
          jLabel_date[i * 7 + j].setText("");
          jLabel_date[i* 7 + j].setForeground(new Color(0, 255, 255));
          jLabel_date[i * 7 + j].setBackground(new java.awt.Color(255, 255, 255));
        }
      }
      int year = Integer.parseInt(jTextField.getText().trim());
      int month = jComboBox.getSelectedIndex();
      Calendar cl = Calendar.getInstance();
      int the_day = cl.get(cl.DAY_OF_MONTH);
      int whole_day = cl.getActualMaximum(cl.DAY_OF_MONTH);
      cl.set(year, month, 1);
      int day_of_week = cl.get(cl.DAY_OF_WEEK);
      int m = 1;
      for(int i = 0; i < 42; i++){
        if(i >= day_of_week - 1 && m <= whole_day){
          jLabel_date[i].setText(String.valueOf(m));
          if(m == the_day){
            jLabel_date[i].setForeground(new java.awt.Color(153, 204, 0));
            jLabel_date[i].setBackground(new java.awt.Color(51, 51, 255));
          }
          m++;
        }      
      }
      String text = year + "年" + (month + 1) + "月" + the_day + "日" + " " +
                    cl.get(cl.HOUR_OF_DAY) + ":" + cl.get(cl.MINUTE) + ":" + cl.get(cl.SECOND) ;
      text_Show_Time.setText(text);
    }
   
    private void centerWindow(Window w) {
      Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
      Dimension windowSize = w.getSize();
      w.setBounds((int)(screenSize.getWidth() - windowSize.getWidth()) / 2,
          (int)(screenSize.getHeight() - windowSize.getHeight()) / 2,
          (int)windowSize.getWidth(), (int)windowSize.getHeight());
    }
   
    private void initialize(){
      this.setSize(400, 300);
      this.setContentPane(getMainPanel());
      this.setTitle("日历控件");
      this.centerWindow(this);
      jTextField.setText(String.valueOf(2007));   
      this.repainTheClock();  
    }
   
    public static void main(String[] args){
      new ClockView().setVisible(true);
    }
    /**
     * This method initializes refresh_Button   
     *    
     * @return javax.swing.JButton   
     */
   
}