/*
 * Copyright 2012-2015 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat 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, or (at your
 * option) any later version.
 *
 * Thermostat 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.client.swing.internal.components;

import java.awt.Component;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;

import javax.swing.JPanel;

@SuppressWarnings("serial")
public class ThermostatGlassPane extends JPanel {

    public ThermostatGlassPane() {
        setOpaque(false);
    }
    
    @Override
    protected void addImpl(Component comp, Object constraints, int index) {
        comp.addComponentListener(new ComponentAdapter() {
            @Override
            public void componentHidden(ComponentEvent e) {
                // check if every component has been made invisible
                boolean keepVisible = false;
                for (Component child : ThermostatGlassPane.this.getComponents()){
                    if (child.isVisible()) {
                        keepVisible = true;
                        break;
                    }
                }
                if (!keepVisible) {
                    ThermostatGlassPane.this.setVisible(false);
                }
            }
        });
        
        super.addImpl(comp, constraints, index);
    }
}