editor.java

简单的文本编辑器～～只完成了基本的功能～

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.border.*;
public class editor extends JFrame 
{
	private MatteBorder border ;
	private JTextArea jta ;
	
	private JMenuBar jmb = new JMenuBar(); 
	private JMenu jmfile = new JMenu("文件");
	private JMenu jmeditor = new JMenu("编辑");
	private JMenu jmgs = new JMenu ("格式");
	
	
	private JPanel  p = new JPanel();
    JScrollPane jsp ;
	
	
	JMenuItem open;//文件菜单组件
	JMenuItem save;
	JMenuItem quit;
	JMenuItem newfile ;
	
		
	JMenuItem jmeditor_x;//编辑菜单组件
	JMenuItem jmeditor_c;
	JMenuItem jmeditor_v;
	
	
	JMenuItem jmgs_hh;//格式组件
	JMenuItem jmgs_zt;
	JMenuItem jmgs_c;

	public editor ()
	{
	    p.setLayout(new BorderLayout());
	    jsp = new JScrollPane(jta = new JTextArea(),
	    JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
	    JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
	    p.add(jsp,BorderLayout.CENTER);
	    p.setBorder(border = new  MatteBorder (new ImageIcon("images/12.gif")));
	    
		jmfile.add(newfile =new JMenuItem("新建"));
		jmfile.add(open=new JMenuItem ("打开"));
		jmfile.add(save=new JMenuItem ("保存"));
		jmfile.add(quit=new JMenuItem ("退出"));//增加文件菜单组件
		
		jmeditor.add(jmeditor_c = new JMenuItem ("复制"));
		jmeditor.add(jmeditor_x = new JMenuItem ("剪切"));
		jmeditor.add(jmeditor_v = new JMenuItem ("粘贴"));//增加编辑菜单组件
		
		jmgs.add(jmgs_hh = new JMenuItem ("自动换行"));//增加格式菜单组件
		jmgs.add(jmgs_c  = new JMenuItem("字体颜色"));
		jmgs.add(jmgs_zt = new JMenuItem("字体....."));
		
		
		jmb.add(jmfile);
		jmb.add(jmeditor);
		jmb.add(jmgs);
		
		getContentPane().setLayout(new BorderLayout());
		getContentPane().add(jmb,BorderLayout.NORTH);
		getContentPane().add(jsp,BorderLayout.CENTER);
		
		addaction();
		
	
		
	}
	
	
	public static void main(String [] args)
	{
		editor frame = new editor();
		frame.setTitle("自制文本编辑器V01");
		frame.setSize(400,300);
		frame.setLocation(200,200);
		frame.setVisible(true);
		
	}
	
//事件	
	void addaction ()
	{
		open.addActionListener(new ActionListener()
		{
			public void actionPerformed(ActionEvent e){
				openfile();
			}
		});
		
		newfile.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				System.out.println("没有想到怎么实现有主义的帮我实现实现^_^");
			}
		});
		
		save.addActionListener(new ActionListener(){public void 
		actionPerformed(ActionEvent e){
			savefile();
		}
		});
		
		quit.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				System.exit(0);
			}
		});
	
		jmeditor_c.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				copy();
			}
		});
		
		jmeditor_x.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				cut();
			}
		});
		
		jmeditor_v.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
			plaster();
			}
		});
		
		jmgs_hh.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				 changeline();
			}
		});
		
		jmgs_c.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				 changecolor();
			
			}
		});
			jmgs_zt.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				 System.out.println("正在 制作中");
			
			}
		});
		
	}
	
//以下是各个方法的实现
	
	private void openfile ()
	{//打开文件的方法
		
	JFileChooser fc=new JFileChooser();
	int returnval=fc.showOpenDialog(this);//显示文件对话框
	if(returnval==JFileChooser.APPROVE_OPTION)//APPROVE_OPTION=点确定 
	// CANCEL_OPTION=撤消
	{
		
		File file=fc.getSelectedFile();//从对话框中返回选定文件
		try{
			jta.read(new FileReader(file),null);
			}catch(IOException e){}
	}
	
    }
    private void savefile()
    {//文件保存方法
    	JFileChooser fc = new JFileChooser();
    	int returnval = fc.showSaveDialog(this);
    	if(returnval==JFileChooser.APPROVE_OPTION)
    	{
    		File file = fc.getSelectedFile();
    		try
    		{
    			jta.write(new FileWriter(file));
    		}catch(IOException e){}
    	}
    }
    
    private void copy ()//复制方法
    {
    	jta.copy();
    	jta.requestFocus();
    }
    
    private void cut  ()//剪却方法
    {
    	jta.cut();
    	jta.requestFocus();
    }
    
    private void plaster ()//粘贴方法
    {
    	jta.paste();
    	jta.requestFocus();
    }
    
    private void changeline()//自动换行方法
    {
    	int values = 0;
    	if(values==0)
    	{
    		values=1;
    		jta.setLineWrap(true);
    	}
    	else
    	{
    		values=0;
    		jta.setLineWrap(false);
    	}
    }
    
    private void changecolor()
    {
    	Color color = Color.black ;
    	JColorChooser jcp = new JColorChooser();
    	color = jcp.showDialog(this , "选择颜色",color);
    	if(color==null)
    	{
    		color= Color.black;
    		jta.setForeground(color);
    	}
    	else
    	jta.setForeground(color);
    }
  
}