git.gag.com Git - fw/altos/blob - altosuilib/AltosScanUI.java

   1 /*
   2  * Copyright © 2011 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.altosuilib_3;
  19
  20 import java.awt.*;
  21 import java.awt.event.*;
  22 import javax.swing.*;
  23 import javax.swing.event.*;
  24 import java.io.*;
  25 import java.util.*;
  26 import java.text.*;
  27 import java.util.concurrent.*;
  28 import org.altusmetrum.altoslib_5.*;
  29
  30 class AltosScanResult {
  31         String          callsign;
  32         int             serial;
  33         int             flight;
  34         AltosFrequency  frequency;
  35         int             telemetry;
  36         int             rate;
  37
  38         boolean interrupted = false;
  39
  40         public String toString() {
  41                 return String.format("%-9.9s serial %-4d flight %-4d (%s %s %d)",
  42                                      callsign, serial, flight,
  43                                      frequency.toShortString(),
  44                                      AltosLib.telemetry_name(telemetry),
  45                                      AltosLib.ao_telemetry_rate_values[rate]);
  46         }
  47
  48         public String toShortString() {
  49                 return String.format("%s %d %d %7.3f %d %d",
  50                                      callsign, serial, flight, frequency, telemetry, rate);
  51         }
  52
  53         public AltosScanResult(String in_callsign, int in_serial,
  54                                int in_flight, AltosFrequency in_frequency,
  55                                int in_telemetry,
  56                                int in_rate) {
  57                 callsign = in_callsign;
  58                 serial = in_serial;
  59                 flight = in_flight;
  60                 frequency = in_frequency;
  61                 telemetry = in_telemetry;
  62                 rate = in_rate;
  63         }
  64
  65         public boolean equals(AltosScanResult other) {
  66                 return (serial == other.serial &&
  67                         frequency.frequency == other.frequency.frequency &&
  68                         telemetry == other.telemetry &&
  69                         rate == other.rate);
  70         }
  71
  72         public boolean up_to_date(AltosScanResult other) {
  73                 if (flight == 0 && other.flight != 0) {
  74                         flight = other.flight;
  75                         return false;
  76                 }
  77                 if (callsign.equals("N0CALL") && !other.callsign.equals("N0CALL")) {
  78                         callsign = other.callsign;
  79                         return false;
  80                 }
  81                 return true;
  82         }
  83 }
  84
  85 class AltosScanResults extends LinkedList<AltosScanResult> implements ListModel<AltosScanResult> {
  86
  87         LinkedList<ListDataListener>    listeners = new LinkedList<ListDataListener>();
  88
  89         void changed(ListDataEvent de) {
  90                 for (ListDataListener l : listeners)
  91                         l.contentsChanged(de);
  92         }
  93
  94         public boolean add(AltosScanResult r) {
  95                 int i = 0;
  96                 for (AltosScanResult old : this) {
  97                         if (old.equals(r)) {
  98                                 if (!old.up_to_date(r))
  99                                         changed (new ListDataEvent(this,
 100                                                                    ListDataEvent.CONTENTS_CHANGED,
 101                                                                    i, i));
 102                                 return true;
 103                         }
 104                         i++;
 105                 }
 106
 107                 super.add(r);
 108                 changed(new ListDataEvent(this,
 109                                           ListDataEvent.INTERVAL_ADDED,
 110                                           this.size() - 2, this.size() - 1));
 111                 return true;
 112         }
 113
 114         public void addListDataListener(ListDataListener l) {
 115                 listeners.add(l);
 116         }
 117
 118         public void removeListDataListener(ListDataListener l) {
 119                 listeners.remove(l);
 120         }
 121
 122         public AltosScanResult getElementAt(int i) {
 123                 return this.get(i);
 124         }
 125
 126         public int getSize() {
 127                 return this.size();
 128         }
 129 }
 130
 131 public class AltosScanUI
 132         extends AltosUIDialog
 133         implements ActionListener
 134 {
 135         AltosUIFrame                    owner;
 136         AltosDevice                     device;
 137         AltosConfigData                 config_data;
 138         AltosTelemetryReader            reader;
 139         private JList<AltosScanResult>  list;
 140         private JLabel                  scanning_label;
 141         private JLabel                  frequency_label;
 142         private JLabel                  telemetry_label;
 143         private JLabel                  rate_label;
 144         private JButton                 cancel_button;
 145         private JButton                 monitor_button;
 146         private JCheckBox[]             telemetry_boxes;
 147         private JCheckBox[]             rate_boxes;
 148         javax.swing.Timer               timer;
 149         AltosScanResults                results = new AltosScanResults();
 150
 151         int                             telemetry;
 152         boolean                         select_telemetry = false;
 153
 154         int                             rate;
 155         boolean                         select_rate = false;
 156
 157         final static int                timeout = 1200;
 158         TelemetryHandler                handler;
 159         Thread                          thread;
 160         AltosFrequency[]                frequencies;
 161         int                             frequency_index;
 162         int                             packet_count;
 163         int                             tick_count;
 164
 165         void scan_exception(Exception e) {
 166                 if (e instanceof FileNotFoundException) {
 167                         JOptionPane.showMessageDialog(owner,
 168                                                       ((FileNotFoundException) e).getMessage(),
 169                                                       "Cannot open target device",
 170                                                       JOptionPane.ERROR_MESSAGE);
 171                 } else if (e instanceof AltosSerialInUseException) {
 172                         JOptionPane.showMessageDialog(owner,
 173                                                       String.format("Device \"%s\" already in use",
 174                                                                     device.toShortString()),
 175                                                       "Device in use",
 176                                                       JOptionPane.ERROR_MESSAGE);
 177                 } else if (e instanceof IOException) {
 178                         IOException ee = (IOException) e;
 179                         JOptionPane.showMessageDialog(owner,
 180                                                       device.toShortString(),
 181                                                       ee.getLocalizedMessage(),
 182                                                       JOptionPane.ERROR_MESSAGE);
 183                 } else {
 184                         JOptionPane.showMessageDialog(owner,
 185                                                       String.format("Connection to \"%s\" failed",
 186                                                                     device.toShortString()),
 187                                                       "Connection Failed",
 188                                                       JOptionPane.ERROR_MESSAGE);
 189                 }
 190                 close();
 191         }
 192
 193         class TelemetryHandler implements Runnable {
 194
 195                 public void run() {
 196
 197                         boolean interrupted = false;
 198
 199                         try {
 200                                 for (;;) {
 201                                         try {
 202                                                 AltosState      state = reader.read();
 203                                                 if (state == null)
 204                                                         continue;
 205                                                 packet_count++;
 206                                                 if (state.flight != AltosLib.MISSING) {
 207                                                         final AltosScanResult   result = new AltosScanResult(state.callsign,
 208                                                                                                              state.serial,
 209                                                                                                              state.flight,
 210                                                                                                              frequencies[frequency_index],
 211                                                                                                              telemetry,
 212                                                                                                              rate);
 213                                                         Runnable r = new Runnable() {
 214                                                                         public void run() {
 215                                                                                 results.add(result);
 216                                                                         }
 217                                                                 };
 218                                                         SwingUtilities.invokeLater(r);
 219                                                 }
 220                                         } catch (ParseException pp) {
 221                                         } catch (AltosCRCException ce) {
 222                                         }
 223                                 }
 224                         } catch (InterruptedException ee) {
 225                                 interrupted = true;
 226                         } catch (IOException ie) {
 227                         } finally {
 228                                 reader.close(interrupted);
 229                         }
 230                 }
 231         }
 232
 233         void set_label() {
 234                 frequency_label.setText(String.format("Frequency: %s", frequencies[frequency_index].toString()));
 235                 if (select_telemetry)
 236                         telemetry_label.setText(String.format("Telemetry: %s", AltosLib.telemetry_name(telemetry)));
 237                 if (select_rate)
 238                         rate_label.setText(String.format("Rate: %d baud", AltosLib.ao_telemetry_rate_values[rate]));
 239         }
 240
 241         void set_telemetry() {
 242                 reader.set_telemetry(telemetry);
 243         }
 244
 245         void set_rate() {
 246                 reader.set_telemetry_rate(rate);
 247         }
 248
 249         void set_frequency() throws InterruptedException, TimeoutException {
 250                 reader.set_frequency(frequencies[frequency_index].frequency);
 251                 reader.reset();
 252         }
 253
 254         void next() throws InterruptedException, TimeoutException {
 255                 reader.set_monitor(false);
 256
 257                 /* Let any pending input from the last configuration drain out */
 258                 Thread.sleep(100);
 259
 260                 if (select_rate) {
 261                         boolean wrapped = false;
 262                         do {
 263                                 ++rate;
 264                                 if (rate > AltosLib.ao_telemetry_rate_max) {
 265                                         wrapped = true;
 266                                         rate = 0;
 267                                 }
 268                         } while (!rate_boxes[rate].isSelected());
 269                         set_rate();
 270                         if (!wrapped) {
 271                                 set_label();
 272                                 return;
 273                         }
 274                 }
 275                 if (select_telemetry) {
 276                         boolean wrapped = false;
 277                         do {
 278                                 ++telemetry;
 279                                 if (telemetry > AltosLib.ao_telemetry_max) {
 280                                         wrapped = true;
 281                                         telemetry = AltosLib.ao_telemetry_min;
 282                                 }
 283                         } while (!telemetry_boxes[telemetry - AltosLib.ao_telemetry_min].isSelected());
 284                         set_telemetry();
 285                         if (!wrapped) {
 286                                 set_label();
 287                                 return;
 288                         }
 289                 }
 290                 packet_count = 0;
 291                 tick_count = 0;
 292                 ++frequency_index;
 293                 if (frequency_index >= frequencies.length)
 294                         frequency_index = 0;
 295                 set_frequency();
 296                 set_label();
 297                 reader.set_monitor(true);
 298         }
 299
 300
 301         void close() {
 302                 if (thread != null && thread.isAlive()) {
 303                         thread.interrupt();
 304                         try {
 305                                 thread.join();
 306                         } catch (InterruptedException ie) {}
 307                 }
 308                 thread = null;
 309                 if (timer != null)
 310                         timer.stop();
 311                 setVisible(false);
 312                 dispose();
 313         }
 314
 315         void tick_timer() throws InterruptedException, TimeoutException {
 316                 ++tick_count;
 317                 if (packet_count == 0 || tick_count > 5)
 318                         next();
 319         }
 320
 321         public void actionPerformed(ActionEvent e) {
 322                 String cmd = e.getActionCommand();
 323
 324                 try {
 325                         if (cmd.equals("cancel"))
 326                                 close();
 327
 328                         if (cmd.equals("tick"))
 329                                 tick_timer();
 330
 331                         if (cmd.equals("telemetry")) {
 332                                 int k;
 333                                 int scanning_telemetry = 0;
 334                                 for (k = AltosLib.ao_telemetry_min; k <= AltosLib.ao_telemetry_max; k++) {
 335                                         int j = k - AltosLib.ao_telemetry_min;
 336                                         if (telemetry_boxes[j].isSelected())
 337                                                 scanning_telemetry |= (1 << k);
 338                                 }
 339                                 if (scanning_telemetry == 0) {
 340                                         scanning_telemetry |= (1 << AltosLib.ao_telemetry_standard);
 341                                         telemetry_boxes[AltosLib.ao_telemetry_standard - AltosLib.ao_telemetry_min].setSelected(true);
 342                                 }
 343                                 AltosUIPreferences.set_scanning_telemetry(scanning_telemetry);
 344                         }
 345
 346                         if (cmd.equals("rate")) {
 347                                 int k;
 348                                 int scanning_rate = 0;
 349                                 for (k = 0; k <= AltosLib.ao_telemetry_rate_max; k++) {
 350                                         if (rate_boxes[k].isSelected())
 351                                                 scanning_rate |= (1 << k);
 352                                 }
 353                                 if (scanning_rate == 0) {
 354                                         scanning_rate = (1 << 0);
 355                                         rate_boxes[0].setSelected(true);
 356                                 }
 357                                 AltosUIPreferences.set_scanning_telemetry_rate(scanning_rate);
 358                         }
 359
 360                         if (cmd.equals("monitor")) {
 361                                 close();
 362                                 AltosScanResult r = (AltosScanResult) (list.getSelectedValue());
 363                                 if (r != null) {
 364                                         if (device != null) {
 365                                                 if (reader != null) {
 366                                                         reader.set_telemetry(r.telemetry);
 367                                                         reader.set_telemetry_rate(r.rate);
 368                                                         reader.set_frequency(r.frequency.frequency);
 369                                                         reader.save_frequency();
 370                                                         reader.save_telemetry();
 371                                                         reader.save_telemetry_rate();
 372                                                         owner.scan_device_selected(device);
 373                                                 }
 374                                         }
 375                                 }
 376                         }
 377                 } catch (TimeoutException te) {
 378                         close();
 379                 } catch (InterruptedException ie) {
 380                         close();
 381                 }
 382         }
 383
 384         /* A window listener to catch closing events and tell the config code */
 385         class ConfigListener extends WindowAdapter {
 386                 AltosScanUI     ui;
 387
 388                 public ConfigListener(AltosScanUI this_ui) {
 389                         ui = this_ui;
 390                 }
 391
 392                 public void windowClosing(WindowEvent e) {
 393                         ui.actionPerformed(new ActionEvent(e.getSource(),
 394                                                            ActionEvent.ACTION_PERFORMED,
 395                                                            "close"));
 396                 }
 397         }
 398
 399         private boolean open() {
 400                 device = AltosDeviceUIDialog.show(owner, AltosLib.product_basestation);
 401                 if (device == null)
 402                         return false;
 403                 try {
 404                         reader = new AltosTelemetryReader(new AltosSerial(device));
 405                         set_frequency();
 406                         set_telemetry();
 407                         set_rate();
 408                         try {
 409                                 Thread.sleep(100);
 410                         } catch (InterruptedException ie) {
 411                         }
 412                         reader.flush();
 413                         handler = new TelemetryHandler();
 414                         thread = new Thread(handler);
 415                         thread.start();
 416                         return true;
 417                 } catch (FileNotFoundException ee) {
 418                         JOptionPane.showMessageDialog(owner,
 419                                                       ee.getMessage(),
 420                                                       "Cannot open target device",
 421                                                       JOptionPane.ERROR_MESSAGE);
 422                 } catch (AltosSerialInUseException si) {
 423                         JOptionPane.showMessageDialog(owner,
 424                                                       String.format("Device \"%s\" already in use",
 425                                                                     device.toShortString()),
 426                                                       "Device in use",
 427                                                       JOptionPane.ERROR_MESSAGE);
 428                 } catch (IOException ee) {
 429                         JOptionPane.showMessageDialog(owner,
 430                                                       device.toShortString(),
 431                                                       "Unkonwn I/O error",
 432                                                       JOptionPane.ERROR_MESSAGE);
 433                 } catch (TimeoutException te) {
 434                         JOptionPane.showMessageDialog(owner,
 435                                                       device.toShortString(),
 436                                                       "Timeout error",
 437                                                       JOptionPane.ERROR_MESSAGE);
 438                 } catch (InterruptedException ie) {
 439                         JOptionPane.showMessageDialog(owner,
 440                                                       device.toShortString(),
 441                                                       "Interrupted exception",
 442                                                       JOptionPane.ERROR_MESSAGE);
 443                 }
 444                 if (reader != null)
 445                         reader.close(false);
 446                 return false;
 447         }
 448
 449         public AltosScanUI(AltosUIFrame in_owner, boolean in_select_telemetry) {
 450
 451                 owner = in_owner;
 452                 select_telemetry = in_select_telemetry;
 453                 select_rate = true;
 454
 455                 frequencies = AltosUIPreferences.common_frequencies();
 456                 frequency_index = 0;
 457
 458                 telemetry = AltosLib.ao_telemetry_standard;
 459                 rate = 0;
 460
 461                 if (!open())
 462                         return;
 463
 464                 Container               pane = getContentPane();
 465                 GridBagConstraints      c = new GridBagConstraints();
 466                 Insets                  i = new Insets(4,4,4,4);
 467
 468                 timer = new javax.swing.Timer(timeout, this);
 469                 timer.setActionCommand("tick");
 470                 timer.restart();
 471
 472                 owner = in_owner;
 473
 474                 pane.setLayout(new GridBagLayout());
 475
 476                 scanning_label = new JLabel("Scanning:");
 477                 frequency_label = new JLabel("");
 478
 479                 if (select_telemetry) {
 480                         telemetry_label = new JLabel("");
 481                         telemetry_label.setPreferredSize(new Dimension(100, 16));
 482                         telemetry = AltosLib.ao_telemetry_min;
 483                 } else {
 484                         telemetry = AltosLib.ao_telemetry_standard;
 485                 }
 486
 487                 if (select_rate) {
 488                         rate_label = new JLabel("");
 489                         rate_label.setPreferredSize(new Dimension(100, 16));
 490                 }
 491
 492                 set_label();
 493
 494                 c.fill = GridBagConstraints.HORIZONTAL;
 495                 c.anchor = GridBagConstraints.LINE_START;
 496                 c.insets = i;
 497                 c.weightx = 0;
 498                 c.weighty = 0;
 499
 500                 c.gridx = 0;
 501                 c.gridy = 0;
 502                 c.gridwidth = 2;
 503
 504                 pane.add(scanning_label, c);
 505                 c.gridy = 1;
 506                 pane.add(frequency_label, c);
 507
 508                 int     y_offset_rate = 3;
 509                 int     y_offset_telem = 3;
 510
 511                 int     check_x = 0;
 512
 513                 if (select_rate && select_telemetry)
 514                         c.gridwidth = 1;
 515
 516                 if (select_rate) {
 517                         c.gridy = 2;
 518                         c.gridx = check_x++;
 519                         pane.add(rate_label, c);
 520
 521                         int     scanning_rate = AltosUIPreferences.scanning_telemetry_rate();
 522                         rate_boxes = new JCheckBox[AltosLib.ao_telemetry_rate_max + 1];
 523                         for (int k = 0; k <= AltosLib.ao_telemetry_rate_max; k++) {
 524                                 rate_boxes[k] = new JCheckBox(String.format("%d baud", AltosLib.ao_telemetry_rate_values[k]));
 525                                 c.gridy = y_offset_rate + k;
 526                                 pane.add(rate_boxes[k], c);
 527                                 rate_boxes[k].setActionCommand("rate");
 528                                 rate_boxes[k].addActionListener(this);
 529                                 rate_boxes[k].setSelected((scanning_rate & (1 << k)) != 0);
 530                         }
 531                         y_offset_rate += AltosLib.ao_telemetry_rate_max + 1;
 532                 }
 533
 534                 if (select_telemetry) {
 535                         c.gridy = 2;
 536                         c.gridx = check_x++;
 537                         pane.add(telemetry_label, c);
 538
 539                         int     scanning_telemetry = AltosUIPreferences.scanning_telemetry();
 540                         telemetry_boxes = new JCheckBox[AltosLib.ao_telemetry_max - AltosLib.ao_telemetry_min + 1];
 541                         for (int k = AltosLib.ao_telemetry_min; k <= AltosLib.ao_telemetry_max; k++) {
 542                                 int j = k - AltosLib.ao_telemetry_min;
 543                                 telemetry_boxes[j] = new JCheckBox(AltosLib.telemetry_name(k));
 544                                 c.gridy = y_offset_telem + j;
 545                                 pane.add(telemetry_boxes[j], c);
 546                                 telemetry_boxes[j].setActionCommand("telemetry");
 547                                 telemetry_boxes[j].addActionListener(this);
 548                                 telemetry_boxes[j].setSelected((scanning_telemetry & (1 << k)) != 0);
 549                         }
 550                         y_offset_telem += (AltosLib.ao_telemetry_max - AltosLib.ao_telemetry_min + 1);
 551                 }
 552
 553                 int y_offset = Math.max(y_offset_rate, y_offset_telem);
 554
 555                 list = new JList<AltosScanResult>(results) {
 556                                 //Subclass JList to workaround bug 4832765, which can cause the
 557                                 //scroll pane to not let the user easily scroll up to the beginning
 558                                 //of the list.  An alternative would be to set the unitIncrement
 559                                 //of the JScrollBar to a fixed value. You wouldn't get the nice
 560                                 //aligned scrolling, but it should work.
 561                                 public int getScrollableUnitIncrement(Rectangle visibleRect,
 562                                                                       int orientation,
 563                                                                       int direction) {
 564                                         int row;
 565                                         if (orientation == SwingConstants.VERTICAL &&
 566                                             direction < 0 && (row = getFirstVisibleIndex()) != -1) {
 567                                                 Rectangle r = getCellBounds(row, row);
 568                                                 if ((r.y == visibleRect.y) && (row != 0))  {
 569                                                         Point loc = r.getLocation();
 570                                                         loc.y--;
 571                                                         int prevIndex = locationToIndex(loc);
 572                                                         Rectangle prevR = getCellBounds(prevIndex, prevIndex);
 573
 574                                                         if (prevR == null || prevR.y >= r.y) {
 575                                                                 return 0;
 576                                                         }
 577                                                         return prevR.height;
 578                                                 }
 579                                         }
 580                                         return super.getScrollableUnitIncrement(
 581                                                 visibleRect, orientation, direction);
 582                                 }
 583                         };
 584
 585                 list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 586                 list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
 587                 list.setVisibleRowCount(-1);
 588
 589                 list.addMouseListener(new MouseAdapter() {
 590                                  public void mouseClicked(MouseEvent e) {
 591                                          if (e.getClickCount() == 2) {
 592                                                  monitor_button.doClick(); //emulate button click
 593                                          }
 594                                  }
 595                         });
 596                 JScrollPane listScroller = new JScrollPane(list);
 597                 listScroller.setPreferredSize(new Dimension(400, 80));
 598                 listScroller.setAlignmentX(LEFT_ALIGNMENT);
 599
 600                 //Create a container so that we can add a title around
 601                 //the scroll pane.  Can't add a title directly to the
 602                 //scroll pane because its background would be white.
 603                 //Lay out the label and scroll pane from top to bottom.
 604                 JPanel listPane = new JPanel();
 605                 listPane.setLayout(new BoxLayout(listPane, BoxLayout.PAGE_AXIS));
 606
 607                 JLabel label = new JLabel("Select Device");
 608                 label.setLabelFor(list);
 609                 listPane.add(label);
 610                 listPane.add(Box.createRigidArea(new Dimension(0,5)));
 611                 listPane.add(listScroller);
 612                 listPane.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
 613
 614                 c.fill = GridBagConstraints.BOTH;
 615                 c.anchor = GridBagConstraints.CENTER;
 616                 c.insets = i;
 617                 c.weightx = 1;
 618                 c.weighty = 1;
 619
 620                 c.gridx = 0;
 621                 c.gridy = y_offset;
 622                 c.gridwidth = 2;
 623                 c.anchor = GridBagConstraints.CENTER;
 624
 625                 pane.add(listPane, c);
 626
 627                 cancel_button = new JButton("Cancel");
 628                 cancel_button.addActionListener(this);
 629                 cancel_button.setActionCommand("cancel");
 630
 631                 c.fill = GridBagConstraints.NONE;
 632                 c.anchor = GridBagConstraints.CENTER;
 633                 c.insets = i;
 634                 c.weightx = 1;
 635                 c.weighty = 1;
 636
 637                 c.gridx = 0;
 638                 c.gridy = y_offset + 1;
 639                 c.gridwidth = 1;
 640                 c.anchor = GridBagConstraints.CENTER;
 641
 642                 pane.add(cancel_button, c);
 643
 644                 monitor_button = new JButton("Monitor");
 645                 monitor_button.addActionListener(this);
 646                 monitor_button.setActionCommand("monitor");
 647
 648                 c.fill = GridBagConstraints.NONE;
 649                 c.anchor = GridBagConstraints.CENTER;
 650                 c.insets = i;
 651                 c.weightx = 1;
 652                 c.weighty = 1;
 653
 654                 c.gridx = 1;
 655                 c.gridy = y_offset + 1;
 656                 c.gridwidth = 1;
 657                 c.anchor = GridBagConstraints.CENTER;
 658
 659                 pane.add(monitor_button, c);
 660
 661                 pack();
 662                 setLocationRelativeTo(owner);
 663
 664                 addWindowListener(new ConfigListener(this));
 665
 666                 setVisible(true);
 667         }
 668 }