org.kalypso.ogc.gml.wms.provider.images.ImageCacheLoader.java Source code

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Here is the source code for org.kalypso.ogc.gml.wms.provider.images.ImageCacheLoader.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 * 
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 * 
 *  and
 *  
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 * 
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 * 
 *  This library 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
 *  Lesser General Public License for more details.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  Contact:
 * 
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *   
 *  ---------------------------------------------------------------------------*/
package org.kalypso.ogc.gml.wms.provider.images;

import java.net.URL;

import org.eclipse.jface.resource.ImageDescriptor;

import com.google.common.cache.CacheLoader;

final class ImageCacheLoader extends CacheLoader<URL, ImageDescriptor> {
    private final ImageCacheThread m_thread;

    public ImageCacheLoader(final ImageCache cache) {
        m_thread = new ImageCacheThread(cache);
        m_thread.start();
    }

    public void dispose() {
        m_thread.cancel();
    }

    @Override
    public ImageDescriptor load(final URL onlineResource) {
        /* Start loading the image */
        final ImageDescriptor missingImage = ImageDescriptor.getMissingImageDescriptor();

        m_thread.addImage(onlineResource);

        return missingImage;
    }
}