edit.java

用JAVA编写的编辑器程序

 /**编辑器test Edition
   *EditFace实现了界面制作；
   *EditFace$FileOpen完成了打开文件功能；
   *EditFace$FileSave完成了保存文件功能；
   *Edit$FindAndReplace查找与替换窗口；
   *Edit$AutoSave自动备分文件线程；
   *Edit$SaveFileDialog保存文件对话框；
   *SetKey添加关键字；
   *SetColor设置颜色；
   *About程序基本介绍；
   *Edit组合各个窗口，并实现功能。
   *by KOF 10-27-2004
   */
   
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.awt.datatransfer.*;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.colorchooser.*;

class Edit extends EditFace implements ActionListener,ClipboardOwner,MouseListener,TextListener
{
	public int flag=0;
	//判断文件是否被修改
	SetKey setkey=new SetKey();
	//添加关键字类
	static SetColor setcolor=new SetColor();
	//设置颜色类
	Clipboard myclipboard=f.getToolkit().getSystemClipboard();
	FindAndReplace fr=new FindAndReplace();
	//查找与替换内部类
	String information="您希望保存当前文件吗？";
	SaveFileDialog sfd=new SaveFileDialog(f,"Save File--Test Edition",true,information);
	//弹出保存文件对话框
	public Edit()
	{
		super();
		ta.addTextListener(this);
		//添加自动保存文件线程---每两分钟保存一次
		AutoSave as=new AutoSave();
		as.start();
	}
	public static void main(String[] args)
	{
		new Edit();
		setcolor.set(setcolor);
	}
	
	public void lostOwnership(Clipboard db,Transferable contents)
	{
	}
 
	public void textValueChanged(TextEvent e)
	{
		flag=1;//文件内容以改变~
	}
	
	//如果内容已变，弹出保存文件对话框，保持文件
	public void saveFile()
	{
		if(flag==1)
		{
			sfd.setVisible(true);//弹出保存文件对话框
			if(sfd.isSave==1&&!tfpath.getText().equals(""))
			{ 
			    FileSave fs=new FileSave();
	 	        fs.myFileSave(tfpath.getText());
	 	    }
		    else if((sfd.isSave==1&&tfpath.getText().equals(""))||sfd.isSave==2)
	 	   {
		 	 	FileSave fs=new FileSave();
				fs.myFileSave();	    	
	 	    }
		}
	}
	public void windowClosing(WindowEvent e)
	{
		saveFile();//询问是否保存当前文件
		System.exit(0);
	}
	public void actionPerformed(ActionEvent e)
	{
		//Open File
		if(e.getActionCommand()=="Open")
		{
			saveFile();//询问是否保存当前文件
			FileOpen fo=new FileOpen();
			fo.myFileOpen();//打开文件
			ta.select(0,0);
			flag=0;
		}
		
		//Save File
		if(e.getActionCommand()=="Save")
		{
			if(tfpath.getText().equals(""))
			{
				FileSave fs=new FileSave();//保存文件
				fs.myFileSave();
			}
			else
			{
				FileSave fs=new FileSave();//保存文件
				fs.myFileSave(tfpath.getText());
			}
			flag=0;
		}
		//Save As a File
		if(e.getActionCommand()=="Save As")
		{
			FileSave fs=new FileSave();
			fs.myFileSave();          //保存文件
			flag=0;
		}
		
		if(e.getActionCommand()=="Exit")
		{  
			saveFile();//询问是否保存当前文件
			System.exit(0);
		}
		//set color
		if(e.getActionCommand()=="SetColor")
		{
			setcolor.setVisible(true);//设置文本区颜色
			ta.setForeground(setcolor.newcolor);
		}
		//clear all content
		if(e.getSource()==bclearall)
		{
			saveFile();//询问是否保存当前文件
			tfpath.setText("");//清除
			ta.setText("");
		}
		//set key
		if(e.getSource()==bsetkey)
		{
			setkey.setVisible(true);//设置关键字
		}
		//set color
		if(e.getSource()==bcolor)
		{	  	
			setcolor.setVisible(true);//设置文本区颜色
			ta.setForeground(setcolor.newcolor);
		}
		if(e.getActionCommand()=="Copy")//复制到剪贴板
		{
			if(!ta.getSelectedText().equals(""))
			{
				try
                {
                
				   StringSelection contents=new StringSelection(ta.getSelectedText());
				   myclipboard.setContents(contents,this);
				   ta.select(ta.getSelectionEnd(),ta.getSelectionEnd());
				 }
				 catch(Exception ee)
				 {
				 	System.out.println(ee);
				 }
			}
		}
		if(e.getActionCommand()=="Cut")//复制到剪贴板并清楚内容
		{
			if(!ta.getSelectedText().equals(""))
			    try
		     	{
			
			        int startpos=ta.getSelectionStart();//start position
			        int endpos=ta.getSelectionEnd();
			        StringSelection contents=new StringSelection(ta.getSelectedText());
			        myclipboard.setContents(contents,this);
			        ta.setText(ta.getText().substring(0,startpos)+ta.getText().substring(endpos,ta.getText().length()));
			        ta.select(startpos,startpos);
			    }
			    catch(Exception ee)
			    {
			     	System.out.println(ee);
			    }
			
		}
		if(e.getActionCommand()=="Paste")//粘贴
		{
			try
			{
				Transferable contents=myclipboard.getContents(this);
				String dstdata=(String)contents.getTransferData(DataFlavor.stringFlavor);
				int startpos=ta.getSelectionStart();
				int endpos=ta.getSelectionEnd();
				ta.setText(ta.getText().substring(0,startpos)+dstdata+ta.getText().substring(endpos,ta.getText().length()));
				ta.select(startpos+dstdata.length(),startpos+dstdata.length());
			
			}
			catch(Exception ee)
			{
				System.err.println(ee);
			}
		}
		if(e.getActionCommand()=="Select All")//全选功能的实现
		{
			ta.select(0,ta.getText().length());
		}
		if(e.getActionCommand()=="Find")//查找功能的实现
		{
			fr.setVisible(true);
			fr.setEnabled(false);
		}
		if(e.getActionCommand()=="Replace")//替换功能的实现
		{
			fr.setVisible(true);
			fr.setEnabled(true);
		}
		if(e.getActionCommand()=="About Edit"||e.getActionCommand()=="About Me")
		{
			About about=new About();
			about.setVisible(true);
		}
		
	}
	//change the color
	public void mouseClicked(MouseEvent mec) 		//单击文本区才会改变颜色
    {        ta.setForeground(setcolor.newcolor);    }
    public void mousePressed(MouseEvent mep)
    { 
       	if(mep.getModifiers()==mep.BUTTON3_MASK)//弹出右键菜单
		    pm.show(ta,mep.getX(),mep.getY());
    }
    public void mouseReleased(MouseEvent mer)   {    }
    public void mouseEntered(MouseEvent mee)    {    } 
    public void mouseExited(MouseEvent mex)     {    }
    public void mouseDragged(MouseEvent med)    {    }
	
	
	
	
	//查找与替换窗口
	class FindAndReplace extends WindowAdapter implements ActionListener
    {
    	private Frame frame;
	    private TextField tffind,tfreplace;
		private Label labfind,labreplace;
		private Button bfind,bfindnext,breplace,breplaceall;
		private Panel p1,p2,p3,p4;
		private Label labinfo;
	    private String info="";
		private int pos;
		public FindAndReplace()
		{
			frame=new Frame("Find And Replace--Test Edition");
			frame.setLayout(new GridLayout(3,1));
			frame.setSize(300,200);
			frame.setLocation(80,20);
			frame.setBackground(Color.lightGray);
		
			p1=new Panel();
			p1.setLayout(new GridLayout(2,1));
			labfind=new Label("Please input what you want to search:");
			tffind=new TextField(25);
			p1.add(labfind);
			p1.add(tffind);
		
			p2=new Panel();
			p2.setLayout(new GridLayout(2,1));
			labreplace=new Label("Please input what you want to replace:");
			tfreplace=new TextField(25);
			p2.add(labreplace);
			p2.add(tfreplace);
		
			p3=new Panel();
			p3.setLayout(new FlowLayout(FlowLayout.LEFT));
			bfind=new Button("  Find  ");
			bfindnext=new Button("Find Next");
			breplace=new Button(" Replace ");
			breplaceall=new Button("Replace All");
			bfind.addActionListener(this);
			bfindnext.addActionListener(this);
			breplace.addActionListener(this);
			breplaceall.addActionListener(this);
			p3.add(bfind);
			p3.add(bfindnext);
			p3.add(breplace);
			p3.add(breplaceall);
			
			p4=new Panel();
			p4.setLayout(new GridLayout(2,1));
			labinfo=new Label();
			p4.add(p3);
			p4.add(labinfo);
	    
	       frame.addWindowListener(this);
	 	   frame.add(p1);
	 	   frame.add(p2);
	 	   frame.add(p4);			
		
		}
		public void setVisible(boolean b)
		{
			frame.setVisible(b);
			pos=0;
			ta.select(pos,pos);
		}
		public void setEnabled(boolean b)
		{
			tfreplace.setEnabled(b);
			breplace.setEnabled(b);
			breplaceall.setEnabled(b);
		}
		public int find(String s,String sub)//查找
		{
     	   return find(s,sub,0);
		}
		public int find(String s,String sub,int startpos)//查找
		{
			String ss="";
			int len=s.length();
			int sublen=sub.length();
			try
			{
				for(int j=startpos;j<=len-sublen;j++)
				{
					if(s.substring(j,j+sublen).equals(sub))
				  	   return j;
				}
			}
			catch(Exception ee)
			{
				return -1;
			}
			return -1;		
		}
		public void actionPerformed(ActionEvent e)
		{
			if(e.getSource()==bfind)
			{
				String s=tffind.getText();
				if(!s.equals(""))
				{
					pos=find(ta.getText(),s);//查找
					if(pos>=0)
					{
						ta.select(pos,pos+s.length());
						info="字符串 "+s+" 在第"+pos+"个字符处";
						pos=pos+s.length();
					}	
					else
					{
						info="字符串 "+s+" 没有找到！";
					}	
				}
			}
			if(e.getSource()==bfindnext)//查找下一个
			{
				String s=tffind.getText();
				pos=ta.getSelectionEnd();
				if(!s.equals(""))
				{
					pos=find(ta.getText(),s,pos);
					if(pos>=0)
					{
						ta.select(pos,pos+s.length());
						info="字符串 "+s+" 在第"+pos+"个字符处！";
						pos=pos+s.length();
					}
					else
					{
						pos=0;
						info="字符串 "+s+" 没有找到！";
					}
				}	
			}
			
			if(e.getSource()==breplace)//替换
			{
		    	String sfind=tffind.getText();
				String sreplace=tfreplace.getText();
				String ss=ta.getText();
				int a,b;
                pos=ta.getSelectionEnd();
                if((pos=find(ss,sfind,pos))!=-1)
                {
                	a=pos;
				   	pos=pos+sfind.length();	
			    	b=pos;
					ss=(ss.substring(0,a)+sreplace+ss.substring(b,ss.length())); 
					pos=pos+(sreplace.length()-sfind.length()); 
				 ta.setText(ss);
				    ta.select(pos-sreplace.length(),pos);
				    info="字符串 "+sfind+"在第"+(pos-sreplace.length())+"个字符处"+" 已被 "+sreplace+" 替换！";
				 }
				 else
				 {
				 	//cannot find the result
				 	info="字符串 "+sfind+" 没有找到！";
				 }     
			}
			
			if(e.getSource()==breplaceall)//替换all
			{
				String sfind=tffind.getText();
				String sreplace=tfreplace.getText();
				String ss=ta.getText();
				int a,b;
				int isfindflag=0;
                pos=0;
                while((pos=find(ss,sfind,pos))!=-1)
                {
                	isfindflag++;
                	a=pos;
				   	pos=pos+sfind.length();	
			    	b=pos;
					ss=(ss.substring(0,a)+sreplace+ss.substring(b,ss.length())); 
					pos=pos+(sreplace.length()-sfind.length());
                }
                if(isfindflag>0)
          	    {
			  	     ta.setText(ss);
             		 pos=0;    
             		 ta.select(pos,pos); 
             		 info="共"+isfindflag+"处的字符串 "+sfind+" 已被 "+sreplace+" 替换！";
                }
                else
                {
                	info="字符串 "+sfind+" 没有找到！";
                }
			}
			labinfo.setText(info);
		}
		public void windowClosing(WindowEvent e)
		{
			frame.setVisible(false);
		}
	
	}
	
	//保存文件的对话框实现
	class SaveFileDialog extends Dialog implements ActionListener
	{
		private Dialog d;
		private Label info;
		private Panel p;
		private Button save,saveas,nosave;
		int isSave=0;
		public SaveFileDialog(Frame owner,String title,boolean modal,String s)
		{
			super(owner,title,modal);
			setSize(200,100);
			setLocation(200,100);
			setBackground(Color.LIGHT_GRAY);
			
			info=new Label(s);
			add(info,"Center");
			
			save=new Button("Save");
			saveas=new Button("Save As");
			nosave=new Button("No Save");
			save.addActionListener(this);
			saveas.addActionListener(this);
			nosave.addActionListener(this);
			
			p=new Panel();
			p.setLayout(new FlowLayout(FlowLayout.LEFT));
			p.add(save);
			p.add(saveas);
			p.add(nosave);
			
			add(p,"South");	
		}
		public void actionPerformed(ActionEvent e)
		{
			if(e.getSource()==save)
			{
				isSave=1;
				setVisible(false);
			}
			if(e.getSource()==saveas)
		   {
				isSave=2;
				setVisible(false);
			}
			if(e.getSource()==nosave)
		    {
				isSave=0;
				setVisible(false);
			}			
		}	
	}
	//自动保存文件的线程实现
	class AutoSave extends Thread
	{
		FileSave fs=new FileSave();
		public void run()
		{
			while(true)
			{
				try
				{		
					if(!tfpath.getText().equals(""))
					{
						fs.myFileSave(tfpath.getText()+".bak");
					}
					sleep(2000);
				}catch(Exception e)
				{
					System.out.println(e.getStackTrace());
				}
			}
		}
	}
}



//实现了界面制作和打开，保存文件
  
class EditFace extends WindowAdapter implements ActionListener,ItemListener,MouseListener
{

	Frame f;
	MenuBar mb;
	PopupMenu pm;
	Menu mfile,medit,mabout;
	TextField tfpath;
	Choice choicesize;
	Panel p;
	Label labsize,labblank;
	Checkbox cbbold,cbitalic;
	Button bcolor,bsetkey,bclearall;
	TextArea ta=new TextArea("",10,10,1);
	FileDialog fd;
	File file1;
	Font font1;
	public EditFace()
	{
		//set Frame
		f=new Frame("KOF_EDIT--Test Edition");
		f.setSize(750,570);
		f.setLocation(10,10);
		f.setBackground(Color.lightGray);
		f.setLayout(new BorderLayout());
		f.addWindowListener(this);