DccDownloadQueue.java

/*
 * Project: xdccBee
 * Copyright (C) 2009 snert@snert-lab.de,
 *
 *  This program 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.snertlab.xdccBee.irc;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;

/**
 * @author snert
 * 
 */
public class DccDownloadQueue {

	private static DccDownloadQueue dccDownloadQueue;
	private HashMap<String, DccDownload> mapDownloadQueue;

	public static DccDownloadQueue getInstance() {
		if (dccDownloadQueue == null) {
			dccDownloadQueue = new DccDownloadQueue();
		}
		return dccDownloadQueue;
	}

	public DccDownloadQueue() {
		this.mapDownloadQueue = new HashMap<String, DccDownload>();
	}

	public void addToQueue(DccDownload dccDownload) {
		mapDownloadQueue.put(dccDownload.getKey(), dccDownload);
	}

	public List<DccDownload> getListDccDownloadsImmutable() {
		return Collections.unmodifiableList(new ArrayList<DccDownload>(
				mapDownloadQueue.values()));
	}

	public DccDownload getDccDownload(DccFileTransfer dccFileTransfer) {
		List<DccDownload> listDccDownloads = getListDccDownloadsImmutable();
		for (DccDownload dccDownload : listDccDownloads) {
			if (dccDownload.matchDccFileTransfer(dccFileTransfer)) {
				return dccDownload;
			}
		}
		return null;
	}

	public boolean containsDccDownload(DccDownload dccDownload) {
		return mapDownloadQueue.containsKey(dccDownload.getKey());
	}

	public DccDownload getDccDownload(String key) {
		return mapDownloadQueue.get(key);
	}
}