FileSystemRegistry.java

/*
 * GCF - Generic Connection Framework for Java SE
 *       GCF-Standard
 *
 * Copyright (c) 2007-2011 Marcel Patzlaff (marcel.patzlaff@gmail.com)
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package javax.microedition.io.file;

import java.util.Enumeration;

import com.github.gcf.io.jse.FileSystemRegistryImpl;

public class FileSystemRegistry {
    
    private static final FileSystemRegistryImpl IMPL= new FileSystemRegistryImpl();
    
    /**
     * @throws SecurityException
     * @throws NullPointerException
     */
    public static boolean addFileSystemListener(FileSystemListener listener) {
        if(listener == null) {
            // IllegalArgumentException is better here but javadoc requests this one...
            throw new NullPointerException("null listener");
        }
        
        return IMPL.addFileSystemListener(listener);
    }
    
    /**
     * @throws SecurityException
     */
    public static Enumeration listRoots() {
        return IMPL.listRoots();
    }
    
    /**
     * @throws NullPointerException
     */
    public static boolean removeFileSystemListener(FileSystemListener listener) {
        if(listener == null) {
            // IllegalArgumentException is better here but javadoc requests this one...
            throw new NullPointerException("null listener");
        }
        
        return IMPL.removeFileSystemListener(listener);
    }
    
    private FileSystemRegistry() {}
}