/*
Research Project:   Graphical Database for Category Theory
                    J. Bradbury, Dr. R. Rosebrugh, I. Rutherford
                    Mount Allison University 2001
File:               MessageDialog.java
Description:	      This dialog is displayed whenever a message is
                    given to the user
*/

//import statements
import java.awt.*;

public class MessageDialog extends Dialog
{
  public MessageDialog(Frame frame, String title, String message, boolean modal)
	{
	  super(frame, title, modal);

    //Create newPanel
	  LPanel p = new LPanel();
    //Add message as label
	  p.addLabel(message, 0, 0, 1.0, 1.0, 0, 0);
    //Add ok button
	  p.addButtonPanel("OK", 0);
    p.finish();
	  add("Center", p);
	  pack();

    //Determine center position for dialog on screen
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension frameSize = this.getSize();
    if (frameSize.height > screenSize.height)
      frameSize.height = screenSize.height;
    if (frameSize.width > screenSize.width)
      frameSize.width = screenSize.width;
    this.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);

	  show();
	}

   public boolean keyDown(Event e, int key)
   {
    if (e.key == Event.ENTER)
    {
      hide();
      dispose();
      return true;
    }
    return false;
   }



  public boolean action(Event event, Object object)
	{
	if(event.target instanceof Button && "OK".equals(object))
  {
		hide();
		dispose();
		return true;
	}

	return false;
	}
}