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_9;
  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_9.*;
  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 int hashCode() {
  66                 return serial ^ frequency.hashCode() ^ telemetry ^ rate;
  67         }
  68
  69         public boolean equals(Object o) {
  70                 if (o == null)
  71                         return false;
  72                 if (!(o instanceof AltosScanResult))
  73                         return false;
  74                 AltosScanResult other = (AltosScanResult) o;
  75                 return (serial == other.serial &&
  76                         frequency.equals(other.frequency) &&
  77                         telemetry == other.telemetry &&
  78                         rate == other.rate);
  79         }
  80
  81         public boolean up_to_date(AltosScanResult other) {
  82                 if (flight == 0 && other.flight != 0) {
  83                         flight = other.flight;
  84                         return false;
  85                 }
  86                 if (callsign.equals("N0CALL") && !other.callsign.equals("N0CALL")) {
  87                         callsign = other.callsign;
  88                         return false;
  89                 }
  90                 return true;
  91         }
  92 }
  93
  94 class AltosScanResults extends LinkedList<AltosScanResult> implements ListModel<AltosScanResult> {
  95
  96         LinkedList<ListDataListener>    listeners = new LinkedList<ListDataListener>();
  97
  98         void changed(ListDataEvent de) {
  99                 for (ListDataListener l : listeners)
 100                         l.contentsChanged(de);
 101         }
 102
 103         public boolean add(AltosScanResult r) {
 104                 int i = 0;
 105                 for (AltosScanResult old : this) {
 106                         if (old.equals(r)) {
 107                                 if (!old.up_to_date(r))
 108                                         changed (new ListDataEvent(this,
 109                                                                    ListDataEvent.CONTENTS_CHANGED,
 110                                                                    i, i));
 111                                 return true;
 112                         }
 113                         i++;
 114                 }
 115
 116                 super.add(r);
 117                 changed(new ListDataEvent(this,
 118                                           ListDataEvent.INTERVAL_ADDED,
 119                                           this.size() - 2, this.size() - 1));
 120                 return true;
 121         }
 122
 123         public void addListDataListener(ListDataListener l) {
 124                 listeners.add(l);
 125         }
 126
 127         public void removeListDataListener(ListDataListener l) {
 128                 listeners.remove(l);
 129         }
 130
 131         public AltosScanResult getElementAt(int i) {
 132                 return this.get(i);
 133         }
 134
 135         public int getSize() {
 136                 return this.size();
 137         }
 138 }
 139
 140 public class AltosScanUI
 141         extends AltosUIDialog
 142         implements ActionListener
 143 {
 144         AltosUIFrame                    owner;
 145         AltosDevice                     device;
 146         AltosConfigData                 config_data;
 147         AltosTelemetryReader            reader;
 148         private JList<AltosScanResult>  list;
 149         private JLabel                  scanning_label;
 150         private JLabel                  frequency_label;
 151         private JLabel                  telemetry_label;
 152         private JLabel                  rate_label;
 153         private JButton                 cancel_button;
 154         private JButton                 monitor_button;
 155         private JCheckBox[]             telemetry_boxes;
 156         private JCheckBox[]             rate_boxes;
 157         javax.swing.Timer               timer;
 158         AltosScanResults                results = new AltosScanResults();
 159
 160         int                             telemetry;
 161         boolean                         select_telemetry = false;
 162
 163         int                             rate;
 164         boolean                         select_rate = false;
 165
 166         final static int                timeout = 1200;
 167         TelemetryHandler                handler;
 168         Thread                          thread;
 169         AltosFrequency[]                frequencies;
 170         int                             frequency_index;
 171         int                             packet_count;
 172         int                             tick_count;
 173
 174         void scan_exception(Exception e) {
 175                 if (e instanceof FileNotFoundException) {
 176                         JOptionPane.showMessageDialog(owner,
 177                                                       ((FileNotFoundException) e).getMessage(),
 178                                                       "Cannot open target device",
 179                                                       JOptionPane.ERROR_MESSAGE);
 180                 } else if (e instanceof AltosSerialInUseException) {
 181                         JOptionPane.showMessageDialog(owner,
 182                                                       String.format("Device \"%s\" already in use",
 183                                                                     device.toShortString()),
 184                                                       "Device in use",
 185                                                       JOptionPane.ERROR_MESSAGE);
 186                 } else if (e instanceof IOException) {
 187                         IOException ee = (IOException) e;
 188                         JOptionPane.showMessageDialog(owner,
 189                                                       device.toShortString(),
 190                                                       ee.getLocalizedMessage(),
 191                                                       JOptionPane.ERROR_MESSAGE);
 192                 } else {
 193                         JOptionPane.showMessageDialog(owner,
 194                                                       String.format("Connection to \"%s\" failed",
 195                                                                     device.toShortString()),
 196                                                       "Connection Failed",
 197                                                       JOptionPane.ERROR_MESSAGE);
 198                 }
 199                 close();
 200         }
 201
 202         class TelemetryHandler implements Runnable {
 203
 204                 public void run() {
 205
 206                         boolean interrupted = false;
 207
 208                         try {
 209                                 for (;;) {
 210                                         try {
 211                                                 AltosState      state = reader.read();
 212                                                 if (state == null)
 213                                                         continue;
 214                                                 packet_count++;
 215                                                 if (state.flight != AltosLib.MISSING) {
 216                                                         final AltosScanResult   result = new AltosScanResult(state.callsign,
 217                                                                                                              state.serial,
 218                                                                                                              state.flight,
 219                                                                                                              frequencies[frequency_index],
 220                                                                                                              telemetry,
 221                                                                                                              rate);
 222                                                         Runnable r = new Runnable() {
 223                                                                         public void run() {
 224                                                                                 results.add(result);
 225                                                                         }
 226                                                                 };
 227                                                         SwingUtilities.invokeLater(r);
 228                                                 }
 229                                         } catch (ParseException pp) {
 230                                         } catch (AltosCRCException ce) {
 231                                         }
 232                                 }
 233                         } catch (InterruptedException ee) {
 234                                 interrupted = true;
 235                         } catch (IOException ie) {
 236                         } finally {
 237                                 reader.close(interrupted);
 238                         }
 239                 }
 240         }
 241
 242         void set_label() {
 243                 frequency_label.setText(String.format("Frequency: %s", frequencies[frequency_index].toString()));
 244                 if (select_telemetry)
 245                         telemetry_label.setText(String.format("Telemetry: %s", AltosLib.telemetry_name(telemetry)));
 246                 if (select_rate)
 247                         rate_label.setText(String.format("Rate: %d baud", AltosLib.ao_telemetry_rate_values[rate]));
 248         }
 249
 250         void set_telemetry() {
 251                 reader.set_telemetry(telemetry);
 252         }
 253
 254         void set_rate() {
 255                 reader.set_telemetry_rate(rate);
 256         }
 257
 258         void set_frequency() throws InterruptedException, TimeoutException {
 259                 reader.set_frequency(frequencies[frequency_index].frequency);
 260                 reader.reset();
 261         }
 262
 263         void next() throws InterruptedException, TimeoutException {
 264                 reader.set_monitor(false);
 265
 266                 if (select_rate) {
 267                         boolean wrapped = false;
 268                         do {
 269                                 ++rate;
 270                                 if (rate > AltosLib.ao_telemetry_rate_max) {
 271                                         wrapped = true;
 272                                         rate = 0;
 273                                 }
 274                         } while (!rate_boxes[rate].isSelected());
 275                         set_rate();
 276                         if (!wrapped) {
 277                                 set_label();
 278                                 return;
 279                         }
 280                 }
 281                 if (select_telemetry) {
 282                         boolean wrapped = false;
 283                         do {
 284                                 ++telemetry;
 285                                 if (telemetry > AltosLib.ao_telemetry_max) {
 286                                         wrapped = true;
 287                                         telemetry = AltosLib.ao_telemetry_min;
 288                                 }
 289                         } while (!telemetry_boxes[telemetry - AltosLib.ao_telemetry_min].isSelected());
 290                         set_telemetry();
 291                         if (!wrapped) {
 292                                 set_label();
 293                                 return;
 294                         }
 295                 }
 296                 packet_count = 0;
 297                 tick_count = 0;
 298                 ++frequency_index;
 299                 if (frequency_index >= frequencies.length)
 300                         frequency_index = 0;
 301                 set_frequency();
 302                 set_label();
 303                 reader.set_monitor(true);
 304         }
 305
 306
 307         void close() {
 308                 if (thread != null && thread.isAlive()) {
 309                         thread.interrupt();
 310                         try {
 311                                 thread.join();
 312                         } catch (InterruptedException ie) {}
 313                 }
 314                 thread = null;
 315                 if (timer != null)
 316                         timer.stop();
 317                 setVisible(false);
 318                 dispose();
 319         }
 320
 321         void tick_timer() throws InterruptedException, TimeoutException {
 322                 ++tick_count;
 323                 if (packet_count == 0 || tick_count > 5)
 324                         next();
 325         }
 326
 327         public void actionPerformed(ActionEvent e) {
 328                 String cmd = e.getActionCommand();
 329
 330                 try {
 331                         if (cmd.equals("cancel"))
 332                                 close();
 333
 334                         if (cmd.equals("tick"))
 335                                 tick_timer();
 336
 337                         if (cmd.equals("telemetry")) {
 338                                 int k;
 339                                 int scanning_telemetry = 0;
 340                                 for (k = AltosLib.ao_telemetry_min; k <= AltosLib.ao_telemetry_max; k++) {
 341                                         int j = k - AltosLib.ao_telemetry_min;
 342                                         if (telemetry_boxes[j].isSelected())
 343                                                 scanning_telemetry |= (1 << k);
 344                                 }
 345                                 if (scanning_telemetry == 0) {
 346                                         scanning_telemetry |= (1 << AltosLib.ao_telemetry_standard);
 347                                         telemetry_boxes[AltosLib.ao_telemetry_standard - AltosLib.ao_telemetry_min].setSelected(true);
 348                                 }
 349                                 AltosUIPreferences.set_scanning_telemetry(scanning_telemetry);
 350                         }
 351
 352                         if (cmd.equals("rate")) {
 353                                 int k;
 354                                 int scanning_rate = 0;
 355                                 for (k = 0; k <= AltosLib.ao_telemetry_rate_max; k++) {
 356                                         if (rate_boxes[k].isSelected())
 357                                                 scanning_rate |= (1 << k);
 358                                 }
 359                                 if (scanning_rate == 0) {
 360                                         scanning_rate = (1 << 0);
 361                                         rate_boxes[0].setSelected(true);
 362                                 }
 363                                 AltosUIPreferences.set_scanning_telemetry_rate(scanning_rate);
 364                         }
 365
 366                         if (cmd.equals("monitor")) {
 367                                 close();
 368                                 AltosScanResult r = (AltosScanResult) (list.getSelectedValue());
 369                                 if (r != null) {
 370                                         if (device != null) {
 371                                                 if (reader != null) {
 372                                                         reader.set_telemetry(r.telemetry);
 373                                                         reader.set_telemetry_rate(r.rate);
 374                                                         reader.set_frequency(r.frequency.frequency);
 375                                                         reader.save_frequency();
 376                                                         reader.save_telemetry();
 377                                                         reader.save_telemetry_rate();
 378                                                         owner.scan_device_selected(device);
 379                                                 }
 380                                         }
 381                                 }
 382                         }
 383                 } catch (TimeoutException te) {
 384                         close();
 385                 } catch (InterruptedException ie) {
 386                         close();
 387                 }
 388         }
 389
 390         /* A window listener to catch closing events and tell the config code */
 391         class ConfigListener extends WindowAdapter {
 392                 AltosScanUI     ui;
 393
 394                 public ConfigListener(AltosScanUI this_ui) {
 395                         ui = this_ui;
 396                 }
 397
 398                 public void windowClosing(WindowEvent e) {
 399                         ui.actionPerformed(new ActionEvent(e.getSource(),
 400                                                            ActionEvent.ACTION_PERFORMED,
 401                                                            "close"));
 402                 }
 403         }
 404
 405         private boolean open() {
 406                 device = AltosDeviceUIDialog.show(owner, AltosLib.product_basestation);
 407                 if (device == null)
 408                         return false;
 409                 try {
 410                         reader = new AltosTelemetryReader(new AltosSerial(device));
 411                         set_frequency();
 412                         set_telemetry();
 413                         set_rate();
 414                         try {
 415                                 Thread.sleep(100);
 416                         } catch (InterruptedException ie) {
 417                         }
 418                         reader.flush();
 419                         handler = new TelemetryHandler();
 420                         thread = new Thread(handler);
 421                         thread.start();
 422                         return true;
 423                 } catch (FileNotFoundException ee) {
 424                         JOptionPane.showMessageDialog(owner,
 425                                                       ee.getMessage(),
 426                                                       "Cannot open target device",
 427                                                       JOptionPane.ERROR_MESSAGE);
 428                 } catch (AltosSerialInUseException si) {
 429                         JOptionPane.showMessageDialog(owner,
 430                                                       String.format("Device \"%s\" already in use",
 431                                                                     device.toShortString()),
 432                                                       "Device in use",
 433                                                       JOptionPane.ERROR_MESSAGE);
 434                 } catch (IOException ee) {
 435                         JOptionPane.showMessageDialog(owner,
 436                                                       device.toShortString(),
 437                                                       "Unkonwn I/O error",
 438                                                       JOptionPane.ERROR_MESSAGE);
 439                 } catch (TimeoutException te) {
 440                         JOptionPane.showMessageDialog(owner,
 441                                                       device.toShortString(),
 442                                                       "Timeout error",
 443                                                       JOptionPane.ERROR_MESSAGE);
 444                 } catch (InterruptedException ie) {
 445                         JOptionPane.showMessageDialog(owner,
 446                                                       device.toShortString(),
 447                                                       "Interrupted exception",
 448                                                       JOptionPane.ERROR_MESSAGE);
 449                 }
 450                 if (reader != null)
 451                         reader.close(false);
 452                 return false;
 453         }
 454
 455         public AltosScanUI(AltosUIFrame in_owner, boolean in_select_telemetry) {
 456                 super(in_owner, "Scan Telemetry", false);
 457
 458                 owner = in_owner;
 459                 select_telemetry = in_select_telemetry;
 460                 select_rate = true;
 461
 462                 frequencies = AltosUIPreferences.common_frequencies();
 463                 frequency_index = 0;
 464
 465                 telemetry = AltosLib.ao_telemetry_standard;
 466                 rate = 0;
 467
 468                 if (!open())
 469                         return;
 470
 471                 Container               pane = getContentPane();
 472                 GridBagConstraints      c = new GridBagConstraints();
 473                 Insets                  i = new Insets(4,4,4,4);
 474
 475                 timer = new javax.swing.Timer(timeout, this);
 476                 timer.setActionCommand("tick");
 477                 timer.restart();
 478
 479                 owner = in_owner;
 480
 481                 pane.setLayout(new GridBagLayout());
 482
 483                 scanning_label = new JLabel("Scanning:");
 484                 frequency_label = new JLabel("");
 485
 486                 if (select_telemetry) {
 487                         telemetry_label = new JLabel("");
 488                         telemetry_label.setPreferredSize(new Dimension(100, 16));
 489                         telemetry = AltosLib.ao_telemetry_min;
 490                 } else {
 491                         telemetry = AltosLib.ao_telemetry_standard;
 492                 }
 493
 494                 if (select_rate) {
 495                         rate_label = new JLabel("");
 496                         rate_label.setPreferredSize(new Dimension(100, 16));
 497                 }
 498
 499                 set_label();
 500
 501                 c.fill = GridBagConstraints.HORIZONTAL;
 502                 c.anchor = GridBagConstraints.LINE_START;
 503                 c.insets = i;
 504                 c.weightx = 0;
 505                 c.weighty = 0;
 506
 507                 c.gridx = 0;
 508                 c.gridy = 0;
 509                 c.gridwidth = 2;
 510
 511                 pane.add(scanning_label, c);
 512                 c.gridy = 1;
 513                 pane.add(frequency_label, c);
 514
 515                 int     y_offset_rate = 3;
 516                 int     y_offset_telem = 3;
 517
 518                 int     check_x = 0;
 519
 520                 if (select_rate && select_telemetry)
 521                         c.gridwidth = 1;
 522
 523                 if (select_rate) {
 524                         c.gridy = 2;
 525                         c.gridx = check_x++;
 526                         pane.add(rate_label, c);
 527
 528                         int     scanning_rate = AltosUIPreferences.scanning_telemetry_rate();
 529                         rate_boxes = new JCheckBox[AltosLib.ao_telemetry_rate_max + 1];
 530                         for (int k = 0; k <= AltosLib.ao_telemetry_rate_max; k++) {
 531                                 rate_boxes[k] = new JCheckBox(String.format("%d baud", AltosLib.ao_telemetry_rate_values[k]));
 532                                 c.gridy = y_offset_rate + k;
 533                                 pane.add(rate_boxes[k], c);
 534                                 rate_boxes[k].setActionCommand("rate");
 535                                 rate_boxes[k].addActionListener(this);
 536                                 rate_boxes[k].setSelected((scanning_rate & (1 << k)) != 0);
 537                         }
 538                         y_offset_rate += AltosLib.ao_telemetry_rate_max + 1;
 539                 }
 540
 541                 if (select_telemetry) {
 542                         c.gridy = 2;
 543                         c.gridx = check_x++;
 544                         pane.add(telemetry_label, c);
 545
 546                         int     scanning_telemetry = AltosUIPreferences.scanning_telemetry();
 547                         telemetry_boxes = new JCheckBox[AltosLib.ao_telemetry_max - AltosLib.ao_telemetry_min + 1];
 548                         for (int k = AltosLib.ao_telemetry_min; k <= AltosLib.ao_telemetry_max; k++) {
 549                                 int j = k - AltosLib.ao_telemetry_min;
 550                                 telemetry_boxes[j] = new JCheckBox(AltosLib.telemetry_name(k));
 551                                 c.gridy = y_offset_telem + j;
 552                                 pane.add(telemetry_boxes[j], c);
 553                                 telemetry_boxes[j].setActionCommand("telemetry");
 554                                 telemetry_boxes[j].addActionListener(this);
 555                                 telemetry_boxes[j].setSelected((scanning_telemetry & (1 << k)) != 0);
 556                         }
 557                         y_offset_telem += (AltosLib.ao_telemetry_max - AltosLib.ao_telemetry_min + 1);
 558                 }
 559
 560                 int y_offset = Math.max(y_offset_rate, y_offset_telem);
 561
 562                 list = new JList<AltosScanResult>(results) {
 563                                 //Subclass JList to workaround bug 4832765, which can cause the
 564                                 //scroll pane to not let the user easily scroll up to the beginning
 565                                 //of the list.  An alternative would be to set the unitIncrement
 566                                 //of the JScrollBar to a fixed value. You wouldn't get the nice
 567                                 //aligned scrolling, but it should work.
 568                                 public int getScrollableUnitIncrement(Rectangle visibleRect,
 569                                                                       int orientation,
 570                                                                       int direction) {
 571                                         int row;
 572                                         if (orientation == SwingConstants.VERTICAL &&
 573                                             direction < 0 && (row = getFirstVisibleIndex()) != -1) {
 574                                                 Rectangle r = getCellBounds(row, row);
 575                                                 if ((r.y == visibleRect.y) && (row != 0))  {
 576                                                         Point loc = r.getLocation();
 577                                                         loc.y--;
 578                                                         int prevIndex = locationToIndex(loc);
 579                                                         Rectangle prevR = getCellBounds(prevIndex, prevIndex);
 580
 581                                                         if (prevR == null || prevR.y >= r.y) {
 582                                                                 return 0;
 583                                                         }
 584                                                         return prevR.height;
 585                                                 }
 586                                         }
 587                                         return super.getScrollableUnitIncrement(
 588                                                 visibleRect, orientation, direction);
 589                                 }
 590                         };
 591
 592                 list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 593                 list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
 594                 list.setVisibleRowCount(-1);
 595
 596                 list.addMouseListener(new MouseAdapter() {
 597                                  public void mouseClicked(MouseEvent e) {
 598                                          if (e.getClickCount() == 2) {
 599                                                  monitor_button.doClick(); //emulate button click
 600                                          }
 601                                  }
 602                         });
 603                 JScrollPane listScroller = new JScrollPane(list);
 604                 listScroller.setPreferredSize(new Dimension(400, 80));
 605                 listScroller.setAlignmentX(LEFT_ALIGNMENT);
 606
 607                 //Create a container so that we can add a title around
 608                 //the scroll pane.  Can't add a title directly to the
 609                 //scroll pane because its background would be white.
 610                 //Lay out the label and scroll pane from top to bottom.
 611                 JPanel listPane = new JPanel();
 612                 listPane.setLayout(new BoxLayout(listPane, BoxLayout.PAGE_AXIS));
 613
 614                 JLabel label = new JLabel("Select Device");
 615                 label.setLabelFor(list);
 616                 listPane.add(label);
 617                 listPane.add(Box.createRigidArea(new Dimension(0,5)));
 618                 listPane.add(listScroller);
 619                 listPane.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
 620
 621                 c.fill = GridBagConstraints.BOTH;
 622                 c.anchor = GridBagConstraints.CENTER;
 623                 c.insets = i;
 624                 c.weightx = 1;
 625                 c.weighty = 1;
 626
 627                 c.gridx = 0;
 628                 c.gridy = y_offset;
 629                 c.gridwidth = 2;
 630                 c.anchor = GridBagConstraints.CENTER;
 631
 632                 pane.add(listPane, c);
 633
 634                 cancel_button = new JButton("Cancel");
 635                 cancel_button.addActionListener(this);
 636                 cancel_button.setActionCommand("cancel");
 637
 638                 c.fill = GridBagConstraints.NONE;
 639                 c.anchor = GridBagConstraints.CENTER;
 640                 c.insets = i;
 641                 c.weightx = 1;
 642                 c.weighty = 1;
 643
 644                 c.gridx = 0;
 645                 c.gridy = y_offset + 1;
 646                 c.gridwidth = 1;
 647                 c.anchor = GridBagConstraints.CENTER;
 648
 649                 pane.add(cancel_button, c);
 650
 651                 monitor_button = new JButton("Monitor");
 652                 monitor_button.addActionListener(this);
 653                 monitor_button.setActionCommand("monitor");
 654
 655                 c.fill = GridBagConstraints.NONE;
 656                 c.anchor = GridBagConstraints.CENTER;
 657                 c.insets = i;
 658                 c.weightx = 1;
 659                 c.weighty = 1;
 660
 661                 c.gridx = 1;
 662                 c.gridy = y_offset + 1;
 663                 c.gridwidth = 1;
 664                 c.anchor = GridBagConstraints.CENTER;
 665
 666                 pane.add(monitor_button, c);
 667
 668                 pack();
 669                 setLocationRelativeTo(owner);
 670
 671                 addWindowListener(new ConfigListener(this));
 672
 673                 setVisible(true);
 674         }
 675 }