APRSTracker.java

package com.aerodynelabs.habtk.tracking;

import java.awt.Container;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.SpringLayout;

import com.aerodynelabs.habtk.connectors.APRSIS;
import com.aerodynelabs.habtk.connectors.APRSSource;
import com.aerodynelabs.habtk.connectors.parsers.APRSPacket;
import com.aerodynelabs.map.MapPoint;

public class APRSTracker extends Tracker {
	
	private static APRSIS aprsis = null;
//	private static AGWPE agwpe = null;
	
	private String callsign;
	private APRSSource source;
	
	@SuppressWarnings("serial")
	class SetupDialog extends JDialog {
		
		private final String options[] = {
			"APRS-IS"
		};
		
		boolean accepted = false;
		
		JTextField fCallsign;
		JComboBox<String> fConnector;
		JTextField fName;
		
		public SetupDialog() {
			setTitle("Setup APRS Tracker");
			setModal(true);
			SpringLayout layout = new SpringLayout();
			setLayout(layout);
			Container pane = getContentPane();
			
			JLabel lCallsign = new JLabel("Callsign:");
			fCallsign = new JTextField(10);
			layout.putConstraint(SpringLayout.NORTH, fCallsign, 6, SpringLayout.NORTH, pane);
			layout.putConstraint(SpringLayout.BASELINE, lCallsign, 0, SpringLayout.BASELINE, fCallsign);
			layout.putConstraint(SpringLayout.WEST, lCallsign, 6, SpringLayout.WEST, pane);
			layout.putConstraint(SpringLayout.WEST, fCallsign, 6, SpringLayout.EAST, lCallsign);
			layout.putConstraint(SpringLayout.EAST, fCallsign, -6, SpringLayout.EAST, pane);
			add(lCallsign);
			add(fCallsign);
			
			JLabel lConnector = new JLabel("Connector:");
			fConnector = new JComboBox<>(options);
			fName = new JTextField(30);
			fName.setEditable(false);
			JButton bConnector = new JButton("Configure");
			bConnector.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					callsign = fCallsign.getText();
					if(fConnector.getSelectedItem().equals("APRS-IS")) {
						boolean reconfig = false;
						if(aprsis != null) {	// Connection already exists
							int n = JOptionPane.showConfirmDialog(null,
									"APRS-IS is already configured.\n" +
									"Would you like to reconfigure?",
									"APRS-IS Configuration",
									JOptionPane.YES_NO_OPTION);
							if(n == JOptionPane.YES_OPTION) {
								reconfig = true;
							} else {
								source = aprsis;
								aprsis.addFilter("f/" + callsign + "/100");
								aprsis.addFilter("b/" + callsign);
							}
						}
						if(aprsis == null || reconfig == true) { // Connection has not been created
							String serverCall = (String)JOptionPane.showInputDialog("APRS-IS Callsign:");
							String serverPass = null;
							if(serverCall != null) serverPass = (String)JOptionPane.showInputDialog("APRS-IS Passcode:");
							if(serverPass == null) {
								accepted = false;
								return;
							} else {
								APRSIS server = new APRSIS("midwest.aprs2.net", 14580, serverCall, serverPass);
								if(server.isValid()) {
									server.addFilter("f/" + callsign + "/100");
									server.addFilter("b/" + callsign);
									aprsis = server;
									source = aprsis;
//									fName.setText(callsign + ": " + server.toString());
								} else {
									accepted = false;
									return;
								}
							}
						}
					}
					// Add more connector types here
					fName.setText(callsign + ": " + source.toString());
				}
			});
			layout.putConstraint(SpringLayout.NORTH, fConnector, 6, SpringLayout.SOUTH, fCallsign);
			layout.putConstraint(SpringLayout.BASELINE, lConnector, 0, SpringLayout.BASELINE, fConnector);
			layout.putConstraint(SpringLayout.WEST, lConnector, 6, SpringLayout.WEST, pane);
			layout.putConstraint(SpringLayout.WEST, fConnector, 6, SpringLayout.EAST, lConnector);
			layout.putConstraint(SpringLayout.EAST, fConnector, -6, SpringLayout.EAST, pane);
			layout.putConstraint(SpringLayout.NORTH, fName, 6, SpringLayout.SOUTH, fConnector);
			layout.putConstraint(SpringLayout.NORTH, bConnector, 0, SpringLayout.NORTH, fName);
			layout.putConstraint(SpringLayout.SOUTH, bConnector, 0, SpringLayout.SOUTH, fName);
			layout.putConstraint(SpringLayout.WEST, fName, 6, SpringLayout.WEST, pane);
			layout.putConstraint(SpringLayout.WEST, bConnector, 6, SpringLayout.EAST, fName);
			layout.putConstraint(SpringLayout.EAST, pane, 6, SpringLayout.EAST, bConnector);
			add(lConnector);
			add(fConnector);
			add(fName);
			add(bConnector);
			
			JButton cancel = new JButton("Cancel");
			cancel.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					accepted = false;
					dispose();
				}
			});
			JButton ok = new JButton("Accept");
			ok.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					try {
						// XXX validate callsign
						boolean validCall = true;
						accepted = (validCall || source.isValid());
					} catch(Exception e1) {
						e1.printStackTrace();
						accepted = false;
					}
					dispose();
				}
			});
			layout.putConstraint(SpringLayout.NORTH, ok, 6, SpringLayout.SOUTH, bConnector);
			layout.putConstraint(SpringLayout.SOUTH, pane, 6, SpringLayout.SOUTH, ok);
			layout.putConstraint(SpringLayout.BASELINE, cancel, 0, SpringLayout.BASELINE, ok);
			layout.putConstraint(SpringLayout.EAST, ok, -6, SpringLayout.EAST, pane);
			layout.putConstraint(SpringLayout.EAST, cancel, -6, SpringLayout.WEST, ok);
			add(cancel);
			add(ok);
			
			pack();
			Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
			setLocation((screen.width - getWidth()) / 2, (screen.height - getHeight()) / 2);
			setVisible(true);
		}
		
		public boolean wasAccepted() {
			return accepted;
		}
		
	}
	
	public String getCallsign() {
		return callsign;
	}
	
	public APRSSource getSource() {
		return source;
	}
	
	public APRSTracker() {
	}

	@Override
	public boolean setup() {
		SetupDialog dialog = new SetupDialog();
		return dialog.wasAccepted();
	}
	
	@Override
	public String toString() {
		return callsign + ": " + source.toString();
	}
	
	@Override
	public boolean isReady() {
		return source.isReady();
	}
	
	@Override
	public MapPoint getPacket() {
		MapPoint position = null;
		if(source.isReady() == true) {
			String line = source.readLine();
			APRSPacket pkt = new APRSPacket(line);
			if(pkt.isPosition() == true) {
				if(pkt.getFrom().equalsIgnoreCase(callsign))
					position = new MapPoint(pkt.getLatitude(), pkt.getLongitude(), pkt.getAltitude(), pkt.getTimestamp() / 1000, pkt.getFrom());
			}
		}
		return position;
	}

}