import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

// subclasses should add all components desired and then setVisible (true);

public class EFrame extends JFrame
{
	private Container itsContent;


	public EFrame(String title, int width, int height, boolean isMain)
	{	super (title);  // put the title on it
		if (isMain)
			this.addWindowListener (new Closer());  // enable closing
		this.setSize (width, height);   // measured in pixels
		itsContent = this.getContentPane();
		itsContent.setLayout (new FlowLayout());
		itsContent.setBackground (Color.white);
	}	//======================


	public EFrame()
	{	this ("", 700, 600, true);  // use the constructor above
	}	//======================


	public Component add (Component given)  
	{	itsContent.add (given);
		return this;
	}	//======================


	public void startNewRow()
	{	JPanel jp = new JPanel();
		jp.setPreferredSize (new Dimension (2000, 2));
		jp.setBackground (itsContent.getBackground());
		itsContent.add (jp);
	}	//======================


	public static class Closer implements WindowListener 
	{
		/** Enable the closer icon to terminate the program. */

		public void windowClosing (WindowEvent ev) 
		{	System.exit (0);
		}	//======================

		public void windowActivated (WindowEvent ev)     { }
		public void windowDeactivated (WindowEvent ev)   { }
		public void windowIconified (WindowEvent ev)     { }
		public void windowDeiconified (WindowEvent ev)   { }
		public void windowOpened (WindowEvent ev)        { }
		public void windowClosed (WindowEvent ev)        { }
	}
}