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/**
 *  MicroEmulator
 *  Copyright (C) 2006-2007 Bartek Teodorczyk 
 *  Copyright (C) 2006-2007 Vlad Skarzhevskyy
 *
 *  It is licensed under the following two licenses as alternatives:
 *    1. GNU Lesser General Public License (the "LGPL") version 2.1 or any newer version
 *    2. Apache License (the "AL") Version 2.0
 *
 *  You may not use this file except in compliance with at least one of
 *  the above two licenses.
 *
 *  You may obtain a copy of the LGPL at
 *      http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 *
 *  You may obtain a copy of the AL at
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the LGPL or the AL for the specific language governing permissions and
 *  limitations.
 *
 *  @version $Id: FileSystemRegistryImpl.java 1684 2008-04-09 21:01:14Z vlads $
 */
package org.microemu.cldc.file;

import java.security.AccessControlContext;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Enumeration;

import javax.microedition.io.file.FileSystemListener;

import org.microemu.microedition.Implementation;

public class FileSystemRegistryImpl implements FileSystemRegistryDelegate, Implementation {

	/* The context to be used when accessing filesystem */
	private AccessControlContext acc;

	private String fsRoot;

	public FileSystemRegistryImpl() {
		this.acc = AccessController.getContext();
	}

	public FileSystemRegistryImpl(String fsRoot) {
		this();
		this.fsRoot = fsRoot;
	}

	public Enumeration listRoots() {
		switch (Connection.getConnectionType()) {
		case Connection.CONNECTIONTYPE_SYSTEM_FS:
			return (Enumeration) AccessController.doPrivileged(new PrivilegedAction() {
				public Object run() {
					return FileSystemFileConnection.listRoots(fsRoot);
				}
			}, acc);
		default:
			throw new RuntimeException("Invalid connectionType configuration");
		}
	}

	public boolean addFileSystemListener(FileSystemListener listener) {
		// TODO Auto-generated method stub
		return false;
	}

	public boolean removeFileSystemListener(FileSystemListener listener) {
		// TODO Auto-generated method stub
		return false;
	}

}