import java.applet.*;
import java.awt.*;

public class GUIexample extends Applet {

Button mbutton;
Label mlabel;
Label eid;
Label mousexy;
List mlist;
Choice mchoice;
CheckboxGroup mradio;
Checkbox radio1;
Checkbox radio2;
Checkbox radio3;
Checkbox mcheckbox;
TextField mtext;
Scrollbar mscroll;

public void init() {

  mbutton = new Button("Press here!");
  
  mlabel= new Label ("                                                 ");
  eid= new Label ("Last event id was 0   ");
  mousexy = new Label ("Mouse at x=0 y=0          ");
  
  mlist = new List (2,true);
  mlist.addItem("Perl");
  mlist.addItem("C");
  mlist.addItem("C++");
  mlist.addItem("Java");

  mchoice = new Choice();
  mchoice.addItem("Red");
  mchoice.addItem("Blue");
  mchoice.addItem("Black");
  mchoice.addItem("White");

  mradio = new CheckboxGroup();
  radio1 = new Checkbox("All",mradio,true);
  radio2 = new Checkbox("Odd",mradio,false);
  radio3 = new Checkbox("Even",mradio,false);

  mcheckbox = new Checkbox("This option?");
  
  mtext = new TextField("",20);
  
  mscroll = new Scrollbar(Scrollbar.HORIZONTAL, 50,1,1,100);

  this.add(mousexy);
  this.add(mscroll);
  this.add(mbutton);
  this.add(mlist);
  this.add(mchoice);
  this.add(mcheckbox);
  this.add(mtext);
  this.add(radio1);
  this.add(radio2);
  this.add(radio3);
  this.add(mlabel);
  this.add(eid);
}

public boolean handleEvent(Event e) {
  Object arg = e.arg;
  eid.setText("Last event id was "+String.valueOf(e.id));
  mousexy.setText("Mouse at x="+String.valueOf(e.x)+" y="+String.valueOf(e.y));
  switch (e.id) {
    case Event.ACTION_EVENT:
      if(e.target==mbutton) {
        mlabel.setText("You pressed the button!");
        return true;
      }
      if(e.target==mcheckbox) {
        mlabel.setText("You pressed the checkbox!");
        return true;
      }
      if(e.target==radio1) {
        mlabel.setText("You selected All!");
        return true;
      }
      if(e.target==radio2) {
        mlabel.setText("You selected Odd!");
        return true;
      }
      if(e.target==radio3) {
        mlabel.setText("You selected Even!");
        return true;
      }
      if(e.target==mchoice) {
        mlabel.setText("You selected "+mchoice.getSelectedItem()+"!");
        return true;
      }
      if(e.target==mtext) {
        mlabel.setText("You entered "+mtext.getText()+"!");
        return true;
      }
      break;
     case Event.LIST_SELECT:
      if(e.target==mlist) {
        mlabel.setText("You selected "+arg.toString()+" !");
        return true;
      }
      break;
     case Event.LIST_DESELECT:
      if(e.target==mlist) {
        mlabel.setText("You deselected "+arg.toString()+"!");
        return true;
      }
      break;
     case Event.SCROLL_LINE_UP:
     case Event.SCROLL_LINE_DOWN:
     case Event.SCROLL_PAGE_UP:
     case Event.SCROLL_PAGE_DOWN:
     case Event.SCROLL_ABSOLUTE:
      if(e.target==mscroll) {
          mlabel.setText("New value of scrollbar is "+
		String.valueOf(mscroll.getValue())+"!");
	return true;
      }
      break;
     case Event.MOUSE_DOWN:
        mlabel.setText("Mouse button was pressed!");
      return true;
     case Event.MOUSE_UP:
        mlabel.setText("Mouse button was released!");
      return true;
     case Event.MOUSE_DRAG:
        mlabel.setText("Mouse was dragged!");
      return true;
   }
   return super.handleEvent(e);
}

}