001/*
002 * Copyright 2010-2015 Institut Pasteur.
003 * 
004 * This file is part of Icy.
005 * 
006 * Icy is free software: you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation, either version 3 of the License, or
009 * (at your option) any later version.
010 * 
011 * Icy is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
014 * GNU General Public License for more details.
015 * 
016 * You should have received a copy of the GNU General Public License
017 * along with Icy. If not, see <http://www.gnu.org/licenses/>.
018 */
019package icy.painter;
020
021import icy.common.listener.weak.WeakListener;
022
023/**
024 * Weak wrapper for OverlayListener.
025 * 
026 * @author Stephane
027 */
028public class WeakOverlayListener extends WeakListener<OverlayListener> implements OverlayListener
029{
030    public WeakOverlayListener(OverlayListener listener)
031    {
032        super(listener);
033    }
034
035    @Override
036    public void removeListener(Object source)
037    {
038        if (source != null)
039            ((Overlay) source).removeOverlayListener(this);
040    }
041
042    @Override
043    public void overlayChanged(OverlayEvent event)
044    {
045        final OverlayListener listener = getListener(event.getSource());
046
047        if (listener != null)
048            listener.overlayChanged(event);
049    }
050}