/*************************
會考題第七題：月曆
**************************/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
public class b7 extends JFrame implements ActionListener//畫圖物件是JFrame的擴充
{
    Container c;
    Color bgcolor=Color.white;
    Color textcolor=Color.red;
    JLabel lab1=new JLabel();
    JButton rot0,rot1;
    int year,month;
    JTable dsp;
    int[] temp_month={31,28,31,30,31,30,31,31,30,31,30,31,};		//月份的天數
    String[] weekname = {"週日","週一","週二","週三","週四","週五","週六"};
    public void gen_cal()
    {
	int temp_year,days,i,last;
	int xpt,ypt;
	int row=6;
	//取得輸入
	String syear = JOptionPane.showInputDialog("請輸入年");
	String smonth = JOptionPane.showInputDialog("請輸入月");
	year=Integer.parseInt(syear);
	month=Integer.parseInt(smonth);
	lab1.setText(year+" 年 "+month+" 月份日曆"); 
	//---------判斷是否為閏年及計算總天數----------------------------
	temp_year=year-1;
	days=365*temp_year+temp_year/4-temp_year/100+temp_year/400;
	if ((year % 4 == 0) && ((year % 100 != 0) || (year % 400 ==0)))// 判斷該年是否為閏年，若是閏年則將該年2月的日期改為29天
		temp_month[1]=29;
	else temp_month[1]=28;
	for (i=0;i<(month-1);i++)		//算總天數
		days=days+temp_month[i];
	last=((days % 7)+1) % 7 ; //算第一行空白的格數
	if ((temp_month[month-1]+last-7)>28) row=6; 	//算算要幾列
	else row=5;
	Object[][] data =new String[row][7];
	dsp=new JTable(data,weekname); //設定JTable
	//for (i=0;i<7;i=i+1) //設定標題列
	//	dsp.setValueAt(weekname[i],0,i);
	xpt=last;
	ypt=0;
	for (i=1;i<=temp_month[month-1];i=i+1)//排每一天
	{
		dsp.setValueAt(""+i,ypt,xpt);
		xpt=xpt+1;
		if (xpt%7 ==0 ) 
		{
			xpt=0;
			ypt=ypt+1;
		}
	}
			
    }

    public b7()   //建構元
    {
	super("月曆");
	gen_cal();
        c=getContentPane();
	rot0=new JButton("離開");
	setSize(600,300);
	c.setLayout(new FlowLayout(FlowLayout.CENTER));
	c.add(lab1);
	c.add(dsp.getTableHeader());//排進標題
	c.add(dsp);
	c.add(rot0);
	//安裝listener
	rot0.addActionListener(this);
	show();
    }
    public void paint(Graphics g)  //真正的畫圖設定
    {
	super.paint(g);
    }

     public void actionPerformed(ActionEvent e) 
     {
         if (e.getSource()==rot0)//結束
	  {
		 System.exit(0);
	  }
	
     } //actionPerformed

    public static void main(String args[]) //程式起點
    {
	b7 app=new b7(); //啟動物件
	app.addWindowListener(new WindowAdapter(){ //匿名內部類別
	public void windowClosing(WindowEvent e)
		{
			System.exit(0);
		}
	}); //處理視窗關閉要求
    }
}