/*
 * File    : ExtendedJDialog.java
 * Created : 04-jun-2002 12:30
 * By      : fbusquets
 *
 * JClic - Authoring and playing system for educational activities
 *
 * Copyright (C) 2000 - 2005 Francesc Busquets & Departament
 * d'Educacio de la Generalitat de Catalunya
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details (see the LICENSE file).
 */

package edu.xtec.util;

import java.awt.Component;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import javax.swing.JDialog;
import javax.swing.JOptionPane;

/**
 * This class is just a {@link javax.swing.JDialog} with a {@link java.awt.event.WindowAdapter}
 * that checks for focus lost. It also provides an utility method to place the dialog window
 * centered over another swing object.
 * @author Francesc Busquets (fbusquets@xtec.net)
 * @version 1.0
 */
public class ExtendedJDialog extends JDialog {
    
    private WindowAdapter wa=null;
    private boolean waConnected=false;
    
    /** Creates new JDialog */
    public ExtendedJDialog(Frame owner, String title, boolean modal) {
        super(owner, title, modal);
        createComponentEvents();
    }
    
    public ExtendedJDialog(Component owner, String title, boolean modal) {
        this(JOptionPane.getFrameForComponent(owner), title, modal);
    }
    
    public ExtendedJDialog(Dialog owner, String title, boolean modal) {
        super(owner, title, modal);
        createComponentEvents();
    }
    
    protected void createComponentEvents(){
        /*
         * Removed due to problems with MAC OSX
         *
        wa=new java.awt.event.WindowAdapter(){
            public void windowDeactivated(java.awt.event.WindowEvent e){
                requestFocus();
            }
        };
         */
    }
    
    public void setVisible(boolean b){
        if(b){
            if(!waConnected && wa!=null){
                addWindowListener(wa);
                waConnected=true;
            }
        }
        else{
            if(waConnected && wa!=null){
                removeWindowListener(wa);
                waConnected=false;
            }
        }
        super.setVisible(b);
    }
    
    public void centerOver(Component parent){
        if(parent!=null)
            setLocation((parent.getWidth()-getWidth())/2, (parent.getHeight()-getHeight())/2);
        setLocationRelativeTo(parent);
    }
}