import javax.swing.*;

import java.awt.*;

import java.awt.geom.*;

import java.awt.event.*;

/**

* Main class for game. Does window stuff and display

*/

class MyFrame extends JFrame{

public MyFrame(){

setTitle("DialogTest");

setSize(200,200); // size in pixels

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

}

class MyPanel extends JPanel{

// Color and string are now instance vars so we can change them

Color current = Color.red;

String msg = "Hello World";

// button variables now instace vars.

// May as well init here.

JTextField text = new JTextField(10);

// Menu items created by menu.add(), still need to keep them for handler

JMenuItem ditem;

// We are using button Listener verbatim. Only difference

// is that we changed our buttons above to JMenuItems

class ButtonHandler implements ActionListener{

public void actionPerformed(ActionEvent e){

// check source, if green button, set color

if(e.getSource() == ditem){

// We do not seem to be able to create and re-use a

// dialog the way the book does! Must create new every time???

MyDialog dialog = new MyDialog(null);

dialog.show(); // popup dialog

// get data out

current = dialog.getCurrent();

}

else if(e.getSource() == text){

String s = text.getText();

if(s != null) msg = s; // install as new msg

}

repaint();

}

}

// Need myframe so we can add menubar

// (could do in main and pass in menubar instead)

MyPanel(JFrame myframe){

// Need to add menu stuff and add to frame (not panel)

JMenuBar mb = new JMenuBar();

myframe.setJMenuBar(mb);

// create menu and add to menuber

JMenu cmenu = new JMenu("Colors");

// Note: book is in error here, calls non-existant addMenu()

mb.add(cmenu);

// add() method on menu creates and adds menu items

ditem = cmenu.add("Popup Dialog");

// make one instance of listener and add to all

// works exactly the same as for buttons

ButtonHandler b = new ButtonHandler();

ditem.addActionListener(b);

text.addActionListener(b);

// add text field

add(text);

}

public void paintComponent(Graphics g){

super.paintComponent(g);

// System.out.println("paintComponent");

g.setColor(current);

g.drawString(msg,50,100);

}

}

public class DialogTest{

// OK let's have our main() create a frame.

public static void main(String[] args){

MyFrame myframe = new MyFrame();

MyPanel mypanel = new MyPanel(myframe);

// Random stuff we just have to do (the book explains, kind of)

Container contentPane = myframe.getContentPane();

// add panel

contentPane.add(mypanel);

myframe.show();

}

}

/*

*/