DccDownload.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 de.snertlab.xdccBee.ui.TableItemDownload;

/**
 * @author holgi
 * 
 */

public class DccDownload {

	public static String STATE_DOWNLOAD_FINISHED = "finished";
	public static String STATE_DOWNLOAD_WAITING = "waiting";
	public static String STATE_DOWNLOAD_DOWNLOAD = "downloading";
	public static String STATE_DOWNLOAD_ABORT = "abort";

	private DccPacket dccPacket;
	private DccFileTransfer dccFileTransfer;
	private String downloadDirFilename;
	private TableItemDownload tableItemDownload;
	private MyTableItemDownloadThread downloadThread;
	private String state;

	public DccDownload(DccPacket dccPacket, String downloadDirFilename) {
		this.dccPacket = dccPacket;
		this.downloadDirFilename = downloadDirFilename;
		setState(STATE_DOWNLOAD_WAITING);
	}

	public String getKey() {
		return dccPacket.toString();
	}

	public void setDccFileTransfer(DccFileTransfer dccFileTransfer) {
		this.dccFileTransfer = dccFileTransfer;
	}

	public DccFileTransfer getDccFileTransfer() {
		return dccFileTransfer;
	}

	public boolean matchDccFileTransfer(DccFileTransfer dccFileTransfer) {
		// assumes that package comes from sender in order, so when you request
		// 2 packages 1 comes first and 2 comes second else packages will be
		// saved under wrong name
		if (dccPacket.getSender().equals(dccFileTransfer.getNick())
				&& state.equals(STATE_DOWNLOAD_WAITING)) {
			return true;
		}
		return false;
	}

	public DccPacket getDccPacket() {
		return dccPacket;
	}

	public String getDownloadDirFilename() {
		return downloadDirFilename;
	}

	public void setTableItemDownload(TableItemDownload tableItemDownload) {
		this.tableItemDownload = tableItemDownload;
	}

	public void start() {
		downloadThread = new MyTableItemDownloadThread(this);
		downloadThread.start();
	}

	/**
	 * 
	 */
	public void stop() {
		if (downloadThread == null) {
			setState(STATE_DOWNLOAD_ABORT);
		} else {
			downloadThread.stopMe();
		}
	}

	private class MyTableItemDownloadThread extends Thread {

		private boolean stop;
		private String state;
		private DccDownload dccDownload;

		public MyTableItemDownloadThread(DccDownload dccDownload) {
			this.dccDownload = dccDownload;
		}

		@Override
		public void run() {
			while (dccFileTransfer.getProgress() < dccFileTransfer.getSize()) {
				if (stop)
					break;
				tableItemDownload.getDisplay().asyncExec(new Runnable() {
					public void run() {
						if (stop)
							return;
						dccDownload.setState(STATE_DOWNLOAD_DOWNLOAD);
						tableItemDownload
								.updateFileTransferDisplay(dccFileTransfer);
					}
				});
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
			state = STATE_DOWNLOAD_FINISHED;
			if (stop) {
				state = STATE_DOWNLOAD_ABORT;
			}
			tableItemDownload.getDisplay().asyncExec(new Runnable() {
				@Override
				public void run() {
					dccDownload.setState(state);
					dccFileTransfer.close();
				}
			});
		}

		public void stopMe() {
			stop = true;
		}
	}

	public String getState() {
		return state;
	}

	public void setState(String state) {
		this.state = state;
		if (tableItemDownload != null) {
			tableItemDownload.refreshState();
		}
	}

}