import java.awt.Component;
import java.awt.Container;
import java.awt.Insets;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JFrame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/*
  Author:  James Tam
  Version: March 29, 2021
*/

public class MyFrame extends JFrame
{
    public static final int PADDING = 2;
    private GridBagLayout aLayout;
    private GridBagConstraints aConstraint;
    private JButton aButton;
    private JLabel aLabel;
    public MyFrame ()
    {
        MyWindowListener aWindowListener = new MyWindowListener ();
        addWindowListener(aWindowListener); // Calling method of super class.
	aButton = new JButton("Press button for a surprise");
	aConstraint = new GridBagConstraints();
	aConstraint.insets = new Insets(PADDING,PADDING,PADDING,PADDING);
	aButton.addActionListener(new ActionListener()  //Creating anonymous object in parameter list 
	{  //Start of anonymous class definition
	    public void actionPerformed(ActionEvent e)  
            {
                Object anObject = e.getSource();
                Container aContainer;
                JButton aButton;
                MyFrame aFrame;
                if (anObject instanceof JButton)
                {
  		    aButton = (JButton) anObject;
                    aContainer = aButton.getRootPane().getParent();
                    if (aContainer instanceof JFrame)    
                    {          		
		        aFrame = (MyFrame) aContainer;
                        String windowText = aFrame.getTitle();
                        aFrame.setTitle("Button pressed");
		        timeDelay();
                        aFrame.setTitle(windowText);
                        makePopup();  
                     }
                }
       
	    }  //End: actionPerformed()

            public void makePopup() 
            {
                JDialog aDialog;
                JLabel aLabel;
                JButton aButton;

                aDialog = new JDialog();
                aDialog.setLayout(null);
                aDialog.setBounds(200,200,400,200);
                aLabel = new JLabel("Don't press the button");
                aButton = new JButton("Non functional");
                aLabel.setBounds(100,0,150,20);
                aButton.setBounds(100,50,150,20);
                aDialog.add(aLabel);
                aDialog.add(aButton);
                aDialog.setVisible(true);
                setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
            }   
	  }); //End definition of anonymous class, parameter list
	
        aLabel = new JLabel("Simple label");
        aLayout = new GridBagLayout();
        setLayout(aLayout);     // Calling method of super class.
        addWidget(aLabel, 0, 0, 1, 1);
        addWidget(aButton, 1, 0, 1, 1);
    }


    private void timeDelay () 
    {
        try 
	{
            Thread.sleep(3000);
	}
        catch (InterruptedException e)
	{
            System.out.println("Problem with pasuing of the program");
	}
    }

    public void addWidget (Component widget, int x, int y, int w, int h)
    {
        aConstraint.gridx = x;
        aConstraint.gridy = y;
        aConstraint.gridwidth = w;
        aConstraint.gridheight = h;
        aLayout.setConstraints (widget, aConstraint);
        add(widget);        // Calling method of super class.
    }

}