NotificationProgressListener.java

package edu.mit.mobile.android.locast.net;
/*
 * Copyright (C) 2011  MIT Mobile Experience Lab
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

import android.app.NotificationManager;
import edu.mit.mobile.android.locast.net.NetworkClient.TransferProgressListener;
import edu.mit.mobile.android.locast.notifications.ProgressNotification;

/**
 * A progress notification that shows the progress of a network transfer. Make sure to call done() when finished.
 *
 * @author steve
 *
 */
public class NotificationProgressListener implements TransferProgressListener {

	final static int NOTIFICATION_TRANSFER = 0x2000;

	private final NotificationManager nm;
	private final ProgressNotification notification;
	private long size;
	private final int notificationId;

	/**
	 * @param nm
	 * @param notification You are responsible with creating your notification and handling errors. This just updates progress and calls done().
	 * @param size The total size of the transfer.
	 * @param id A unique ID for this particular object being transferred.
	 */
	public NotificationProgressListener(NotificationManager nm, ProgressNotification notification, long size, int id) {
		this.notification = notification;
		this.nm = nm;
		this.size = size;
		notificationId = NOTIFICATION_TRANSFER + id;
	}

	public void setSize(long size){
		this.size = size;
	}

	public void publish(long bytes) {
		final int completed = (int)((bytes * 1000) / size);
		notification.setProgress(1000, completed);
		nm.notify(notificationId, notification);
	}

	/**
	 * Show a notification that the transfer was complete.
	 */
	public void done(){
		nm.cancel(notificationId);
		notification.done(notificationId);
	}
}