t_editor.java

保存和打开

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.lang.*;

//////////////////////////////////////////////////////////////////////////////////
 class Frame_class extends Frame 
           implements ActionListener,ItemListener
    
    
    {           // open brace of Frame_class
    
 MenuItem item1,item2,item3,item4,item5,item6;
 MenuItem item7,item8,item9;
 MenuItem item10;
 MenuItem fontitem1,fontitem2,fontitem3,fontitem4;
 MenuItem sizeitem1,sizeitem2,sizeitem3,sizeitem4,sizeitem5,sizeitem6,sizeitem7,
          sizeitem8,sizeitem9,sizeitem10,sizeitem11,sizeitem12;
 MenuItem styleitem1,styleitem2,styleitem3;        
 MenuItem bkcitem[]=new  MenuItem[13];
          
 MenuItem frcitem[]=new  MenuItem[13];

 
 int fontNumeric=12;
 
 TextArea tx1=new TextArea();
 String fileName=null;
 String copystring;
 
 int  fontStyle=Font.PLAIN;
 String fontName="Courier";
 
 FileDialog openDialog;
 FileDialog saveDialog; 
 private ErrorDialog errorDialog=null;
 private TEDialog teDialog=null;
 
 String s;
 static String st="";
 String heading =" Save File ";

 static int window_no=0;
 static int window_counter=0;
 
 ///////////////////////////////////////////////////////////////////////////////
 Frame_class(String title){//start of Frame_class constructor

 super(title);

 MenuBar mbar=new MenuBar();
 
 setMenuBar(mbar);
 
 menu(mbar);
 
 AddChoice(mbar);
 bkfrcolor(mbar);
 textarea(this);
 menu1(mbar);

 //create an object to handle window events
 MyWindowAdapter adapter=new MyWindowAdapter(this);
 //register it to receive those event
 addWindowListener(adapter);
 
 //addKeyListener(this);
 //requestFocus();
 
 this.AddDialog();
 tx1.setBackground(Color.white);
 tx1.setForeground(Color.black);
 this.setVisible(true);

 }//end of Frame_class constructor
/////////////////////////////////////////////////////////////////////////////////  
public void menu1(MenuBar mbar){//start of menu1()
	Menu help = new Menu("  Help  ");
 	help.add(item10 = new MenuItem("About.."));
 	mbar.add(help);
 	item10.addActionListener(this);
 	
}
 public void menu(MenuBar mbar){//start of menu()
 
 
 Menu file=new Menu("  File  "); 

 file.add(item1=new MenuItem("New"));
 file.add(item2=new MenuItem("Open"));
 file.add(item3=new MenuItem("Close"));
 file.add(item4=new MenuItem("Save"));
 file.add(item5=new MenuItem("Save As"));
 file.addSeparator();
 file.add(item6=new MenuItem("Exit"));
 
 mbar.add(file);
 
 Menu edit=new Menu("  Edit  "); 
 
 edit.add(item7=new MenuItem("Cut"));
 edit.add(item8=new MenuItem("Copy"));
 edit.add(item9=new MenuItem("Paste"));
 
 mbar.add(edit);

 
 
 item1.addActionListener(this);
 item2.addActionListener(this);
 item3.addActionListener(this);
 item4.addActionListener(this);
 item5.addActionListener(this);
 item6.addActionListener(this);
 item7.addActionListener(this);
 item8.addActionListener(this);
 item9.addActionListener(this);
 


 }//end of menu() 
 //////////////////////////////////////////////////////////////////////////////

private void AddChoice(MenuBar mbar){

Menu font=new Menu("   Font   ");

font.add(fontitem1=new MenuItem("Courier"));
font.addSeparator();
font.add(fontitem2=new MenuItem("Arial"));
font.addSeparator();
font.add(fontitem4=new MenuItem("TimesRoman"));

mbar.add(font);

Menu size=new Menu("   Size   ");

size.add(sizeitem1=new MenuItem("8"));
size.addSeparator();

size.add(sizeitem2=new MenuItem("10"));
size.addSeparator();

size.add(sizeitem3=new MenuItem("12"));
size.addSeparator();

size.add(sizeitem4=new MenuItem("14"));
size.addSeparator();

size.add(sizeitem5=new MenuItem("16"));
size.addSeparator();

size.add(sizeitem6=new MenuItem("18"));
size.addSeparator();

size.add(sizeitem7=new MenuItem("20"));
size.addSeparator();

size.add(sizeitem8=new MenuItem("22"));
size.addSeparator();

size.add(sizeitem9=new MenuItem("24"));
size.addSeparator();

size.add(sizeitem10=new MenuItem("26"));
size.addSeparator();

size.add(sizeitem11=new MenuItem("28"));
size.addSeparator();

size.add(sizeitem12=new MenuItem("30"));

mbar.add(size);

Menu fontstyle=new Menu("   Font Style   "); 

 fontstyle.add(styleitem1=new MenuItem("Bold"));
 fontstyle.addSeparator();
 fontstyle.add(styleitem2=new MenuItem("Plain")); 
 fontstyle.addSeparator();
 fontstyle.add(styleitem3=new MenuItem("Italic"));
 
 
 mbar.add(fontstyle);
 
 fontitem1.addActionListener(this);
 fontitem2.addActionListener(this);
 //fontitem3.addActionListener(this);
 fontitem4.addActionListener(this);


sizeitem1.addActionListener(this);
sizeitem2.addActionListener(this);
sizeitem3.addActionListener(this);
sizeitem4.addActionListener(this);
sizeitem5.addActionListener(this);
sizeitem6.addActionListener(this);
sizeitem7.addActionListener(this);
sizeitem8.addActionListener(this);
sizeitem9.addActionListener(this);
sizeitem10.addActionListener(this);
sizeitem11.addActionListener(this);
sizeitem12.addActionListener(this);

styleitem1.addActionListener(this);
styleitem2.addActionListener(this);
styleitem3.addActionListener(this);



}
private void bkfrcolor(MenuBar mbar){

Menu bkcolor=new Menu("   BackGround Color   ");
Menu frcolor=new Menu("   Text Color   ");


String colname[]= {"Red","Blue","Green","Cyan","Black","Dark Gray",
                             "Gray","Light Gray","Magenta","Orange","Pink","White"
                             ,"Yellow"};
 
String frcolname[]={" Red"," Blue"," Green"," Cyan"," Black"," Dark Gray",
                             " Gray"," Light Gray"," Magenta"," Orange"," Pink"," White"
                             ," Yellow"};

for(int i=0;i<=12;i++)
{
bkcolor.add(bkcitem[i]=new MenuItem(colname[i]));
bkcitem[i].addActionListener(this);

frcolor.add(frcitem[i]=new MenuItem(frcolname[i]));
frcitem[i].addActionListener(this);

}
mbar.add(bkcolor);
mbar.add(frcolor);

}



 public void textarea(Frame_class fc1){
    
    
    
 
    tx1.setEditable(true);
    fc1.add(tx1);     
 
 }
 
/////////////////////////////////////////////////////////////////////////////
 
 public void actionPerformed(ActionEvent ae){
         
         String args=(String)ae.getActionCommand();
         if(args.equals("New"))
         {
         StartNewWindow();
         }
    else if(args.equals("Open")){heading=" Save File ";openFile();}
    else if(args.equals("Save")){heading=" Save File ";saveOpenedFile();}
    else if(args.equals("Close")){closedFile();}
    else if(args.equals("Save As")){heading=" Save File As ";saveAsFile(this);}
    else if(args.equals("Exit")){System.exit(0);}
    else if(args.equals("Cut")){cut();}
    else if(args.equals("Copy")){copy();}
    else if(args.equals("Paste")){paste();}
    else if(args.equals("Courier")){fontName="Courier";textfont();}
    else if(args.equals("Arial")){fontName="Arial";textfont();}
    else if(args.equals("TimesRoman")){fontName="TimesRoman";textfont();}
    else if(args.equals("8")){fontNumeric=8;textfont();}
    else if(args.equals("8")){fontNumeric=8;textfont();}
    else if(args.equals("8")){fontNumeric=8;textfont();}
    else if(args.equals("10")){fontNumeric=10;textfont();}
    else if(args.equals("12")){fontNumeric=12;textfont();}
    else if(args.equals("14")){fontNumeric=14;textfont();}
    else if(args.equals("16")){fontNumeric=16;textfont();}
    else if(args.equals("18")){fontNumeric=18;textfont();}
    else if(args.equals("20")){fontNumeric=20;textfont();}
    else if(args.equals("22")){fontNumeric=22;textfont();}
    else if(args.equals("24")){fontNumeric=24;textfont();}
    else if(args.equals("26")){fontNumeric=26;textfont();}
    else if(args.equals("28")){fontNumeric=28;textfont();}
    else if(args.equals("30")){fontNumeric=30;textfont();}
    else if(args.equals("Bold")){fontStyle=Font.BOLD;textfont();}
    else if(args.equals("Plain")){fontStyle=Font.PLAIN;textfont();}
    else if(args.equals("Italic")){fontStyle=Font.ITALIC;textfont();}
    
    else if(args.equals("Red")){tx1.setBackground(Color.red);}
    else if(args.equals("Blue")){tx1.setBackground(Color.blue);}
    else if(args.equals("Green")){tx1.setBackground(Color.green);}
    else if(args.equals("Cyan")){tx1.setBackground(Color.cyan);}
    else if(args.equals("Black")){tx1.setBackground(Color.black);}
	  else if(args.equals("Dark Gray")){tx1.setBackground(Color.darkGray);}
	  else if(args.equals("Gray")){tx1.setBackground(Color.gray);}
    else if(args.equals("Light Gray")){tx1.setBackground(Color.lightGray);}
    else if(args.equals("Magenta")){tx1.setBackground(Color.magenta);}
    else if(args.equals("Orange")){tx1.setBackground(Color.orange);}
    else if(args.equals("Pink")){tx1.setBackground(Color.pink);}
    else if(args.equals("White")){tx1.setBackground(Color.white);}
    else if(args.equals("Yellow")){tx1.setBackground(Color.yellow);}
    else if(args.equals(" Red")){tx1.setForeground(Color.red);}
    else if(args.equals(" Blue")){tx1.setForeground(Color.blue);}
    else if(args.equals(" Green")){tx1.setForeground(Color.green);}
    else if(args.equals(" Cyan")){tx1.setForeground(Color.cyan);}
    else if(args.equals(" Black")){tx1.setForeground(Color.black);}
    else if(args.equals(" Dark Gray")){tx1.setForeground(Color.darkGray);}
    else if(args.equals(" Gray")){tx1.setForeground(Color.gray);}
    else if(args.equals(" Light Gray")){tx1.setForeground(Color.lightGray);}
    else if(args.equals(" Magenta")){tx1.setForeground(Color.magenta);}
    else if(args.equals(" Orange")){tx1.setForeground(Color.orange);}
    else if(args.equals(" Pink")){tx1.setForeground(Color.pink);}
    else if(args.equals(" White")){tx1.setForeground(Color.white);}
    else if(args.equals(" Yellow")){tx1.setForeground(Color.yellow);}
    else if(args.equals("About..")){showTEDialog("I, Anuj Agrawal, am a student of Sikkim Manipal Istitute Of Technology, Sikkim.\n"
												+"This Text Editor was developed out of my pure interest in Java.\n"
												+"To know more about me or to get more of my projects pease visit\n\n"
												+"http://anuj.page.tl\n"
												+"or\n"
												+"http://anuj.ajad.googlepages.com\n"
												+"or\n"
												+"http://www.anujag.tk\n"
												+"or\n"
												+"http://www.anujfrens.tk\n\n"
												+"Thanks for using this product.\n"
												+"\tAnuj Agrawal");}
       
    }
    //     }      

private void textfont(){

tx1.setFont(new Font(fontName,fontStyle,fontNumeric));

}



public void itemStateChanged(ItemEvent ie){}


private void StartNewWindow(){