/**
    文件:InfoJMenu.java
    說明:菜單組件   
**/
package my_calculator;
import javax.swing.*;
import java.awt.event.*;
public class InfoJMenu extends JFrame implements ActionListener{
	//聲明框架
	private JFrame mainFrame=null;
	//聲明菜單欄
	private JMenuBar myMenuBar=null;
	//聲明"編輯"菜單及菜單項
	private JMenu edit_Menu=null;
	private JMenuItem edit_copy,edit_paste,edit_exit;
	//聲明"查看"菜單及菜單項
	private JMenu look_Menu=null;
	private JMenuItem look_standard,look_science;
	//聲明"幫助"菜單及菜單項
	private JMenu help_Menu=null;
	private JMenuItem help_about;
	
	//構造方法
	public InfoJMenu(JFrame mainFrame) {
	
		this.mainFrame=mainFrame;
		init();
		//設置監聽
		edit_copy.addActionListener(this);
		edit_paste.addActionListener(this);
		edit_exit.addActionListener(this);
		look_standard.addActionListener(this);
		look_science.addActionListener(this);
		help_about.addActionListener(this);
		
	 }	
		
       //處理事件的方法
	  	public void actionPerformed(ActionEvent e){	  		
	  		if(e.getSource()==edit_copy||e.getSource()==edit_paste||e.getSource()==look_standard||e.getSource()==look_science){
	  		   JOptionPane.showMessageDialog(null,"Sorry,此功能尚未實現","提示",JOptionPane.INFORMATION_MESSAGE);
	  		}	  		
			if(e.getSource()==help_about){
				JOptionPane.showMessageDialog(null,"作者:   3105007206   曾源能\n廣東工業大學計算機科學與技術9班\nQQ: 617616311","關于作者",JOptionPane.INFORMATION_MESSAGE);
		
			}
			if(e.getSource()==edit_exit){
				System.exit(0);
			}
		}
	//初始化
	private void init(){
		//建立菜單欄
		myMenuBar=new JMenuBar();
		//把菜單掛到窗口上
		mainFrame.setJMenuBar(myMenuBar);
		//在菜單欄上增加菜單
		AddMenu();		

		//使主框架可見
		mainFrame.setVisible(true);

	}
	
	//在菜單欄上增加菜單
	private void AddMenu(){
		//添加小圖標
		Icon icon1=new ImageIcon("images\\copy.gif");
		Icon icon2=new ImageIcon("images\\paste.gif");
		Icon icon3=new ImageIcon("images\\exit.gif");
		Icon icon4=new ImageIcon("images\\stan.gif");
		Icon icon5=new ImageIcon("images\\scie.gif");
		Icon icon6=new ImageIcon("images\\help.gif");
		//在菜單欄上附加"編輯"菜單
		edit_Menu=new JMenu("編輯");
		myMenuBar.add(edit_Menu);
		//增加菜單項
		edit_Menu.add(edit_copy=new JMenuItem("復制",icon1));
		edit_Menu.add(edit_paste=new JMenuItem("粘貼",icon2));
		edit_Menu.addSeparator();
		edit_Menu.add(edit_exit=new JMenuItem("退出",icon3));
		
		//在菜單欄中附加"查看"菜單	
		look_Menu=new JMenu("查看");
		myMenuBar.add(look_Menu);

                //增加菜單項
		look_Menu.add(look_standard=new JMenuItem("標準型",icon4));
		look_Menu.add(look_science=new JMenuItem("科學型",icon5));
		
		//在菜單欄中附加"幫助"菜單
		help_Menu=new JMenu("幫助");
                myMenuBar.add(help_Menu);
		help_Menu.add(help_about=new JMenuItem("關于計算器",icon6));

	}

}