package notepad;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.net.URL;
public class Notepad extends JFrame {
	JPanel pnlMain;
	
	JMenuBar mbMain;
	JMenu mnuSystem,mnuEdit,mnuHelp;
	JMenuItem mnuiCls,mnuiSave,mnuiClock,mnuiExit,
	mnuiContent,mnuiIndex,mnuiAbout,mnuiSelectAll,mnuiClear;
	JToolBar tb=new JToolBar();
	JButton btnNew=null;
	JButton btnOpen =null;
	JButton btnSave=null;
	JButton btnExit=null;
	public Notepad()
	{
		super("記事本");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		Font font=new Font("宋體",Font.PLAIN,12);
		pnlMain=new JPanel();
		setContentPane(pnlMain);
		mbMain=new JMenuBar();
		mnuSystem=new JMenu("系統(S)");
		//mnuSystem.setDelay(2);
		mnuEdit=new JMenu("編輯(E)");
		//mnuEdit.setDelay(3);
		mnuHelp=new JMenu("幫助(H)");
		mnuSystem.setMnemonic('S');
		mnuEdit.setMnemonic('E');
		mnuHelp.setMnemonic(KeyEvent.VK_H);
		mbMain.add(mnuSystem);
		mbMain.add(mnuEdit);
		mbMain.add(mnuHelp);
		//初始化系統菜單
		mnuiCls=new JMenuItem("清除屏幕顯示");
		mnuiSave=new JMenuItem("保存聊天記錄");
		mnuiClock=new JMenuItem("顯示系統時間");
		mnuiExit=new JMenuItem("退出系統");
		mnuiExit.addActionListener(
				new ActionListener(){
					public void actionPerformed(ActionEvent ae)
					{
						JOptionPane.showMessageDialog(null, "謝謝使用");
						System.exit(0);
					}
				}
		);
		mnuSystem.add(mnuiCls);
		mnuSystem.add(mnuiSave);
		mnuSystem.addSeparator();
		mnuSystem.add(mnuiExit);
		//初始化編輯菜單
		mnuiSelectAll=new JMenuItem("全選");
		mnuiClear=new JMenuItem("清空");
		mnuEdit.add(mnuiSelectAll);
		mnuEdit.add(mnuiClear);
		//初始化幫助菜單
		Icon icnContent=new ImageIcon("E:/java/images/22.gif");
		mnuiContent=new JMenuItem("目錄",icnContent);
		mnuiIndex=new JMenuItem("索引");
		mnuiAbout=new JMenuItem("關于[HappChat]聊天系統");
		mnuHelp.add(mnuiContent);
		mnuHelp.add(mnuiIndex);
		mnuHelp.add(mnuiAbout);
		//初始化工具欄
		btnNew=makeButton("E:/java/images/new","NEW","新建一個文件","新建");
		btnOpen=makeButton("E:/java/images/open","OPEN","打開一個文件","打開");
		btnSave=makeButton("E:/java/images/save","SAVE","保存一個文件","保存");
		btnExit=makeButton("E:/java/images/exit","EXIT","退出系統","退出");
		
		tb.add(btnNew);
		tb.addSeparator();
		tb.add(btnOpen);
		tb.addSeparator();
		tb.add(btnSave);
		tb.addSeparator();
		tb.add(btnExit);
		
		pnlMain.add(tb,"North");
		//設置組件字體
		mnuSystem.setFont(font);
		mnuEdit.setFont(font);
		mnuHelp.setFont(font);
		mnuiCls.setFont(font);
		mnuiSave.setFont(font);
		mnuiClock.setFont(font);
		mnuiExit.setFont(font);
		mnuiSelectAll.setFont(font);
		mnuiClear.setFont(font);
		mnuiContent.setFont(font);
		mnuiIndex.setFont(font);
		mnuiAbout.setFont(font);
		
		setJMenuBar(mbMain);
		setSize(250,150);
		setVisible(true);
	}
	//創建工具欄按鈕方法
	JButton  makeButton(String strImage,String strAction,String txtToopTip,String strAlter)
	{
		String imgLocation=strImage+".gif";
		URL urlImage=Notepad.class.getResource(imgLocation);
		JButton btnTemp=new JButton();
		btnTemp.setActionCommand(strAction);
		btnTemp.setToolTipText(txtToopTip);
		btnTemp.addActionListener(
				new ActionListener()
				{
					public void actionPerformed(ActionEvent ae)
					{
						JOptionPane.showMessageDialog(null, "您選擇了:"+ae.getActionCommand());
						if(ae.getSource()==btnExit)
							System.exit(0);
					}
				}
		);
		if(urlImage!=null)
			btnTemp.setIcon(new ImageIcon(urlImage));
		else
			btnTemp.setText(strAlter);
		return btnTemp;
			
	}
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Notepad();
	}

}