public Composite configSectionCreate(final Composite parent) {
    GridData gridData;
    GridLayout layout;
    Label label;

    Composite cDisplay = new Composite(parent, SWT.NULL);

    gridData = new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL);
    cDisplay.setLayoutData(gridData);
    layout = new GridLayout();
    layout.numColumns = 1;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    cDisplay.setLayout(layout);

    new BooleanParameter(cDisplay, "Open Details", LBLKEY_PREFIX + "opendetails");

    /** Old-style speed menus. */
    new BooleanParameter(cDisplay, "GUI_SWT_bOldSpeedMenu", LBLKEY_PREFIX + "use_old_speed_menus");

    Composite cBars = new Composite(cDisplay, SWT.NULL);
    layout = new GridLayout();
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    layout.numColumns = 2;
    cBars.setLayout(layout);
    cBars.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    new BooleanParameter(cBars, "Open Bar Incomplete", LBLKEY_PREFIX + "openbar.incomplete");
    new BooleanParameter(cBars, "Open Bar Complete", LBLKEY_PREFIX + "openbar.complete");
    new BooleanParameter(
        cDisplay,
        "Remember transfer bar location",
        LBLKEY_PREFIX + "transferbar.remember_location");

    if (!Constants.isOSX || SWT.getVersion() >= 3300) {

      BooleanParameter est =
          new BooleanParameter(cDisplay, "Enable System Tray", KEY_PREFIX + "enabletray");

      BooleanParameter ctt =
          new BooleanParameter(cDisplay, "Close To Tray", LBLKEY_PREFIX + "closetotray");
      BooleanParameter mtt =
          new BooleanParameter(cDisplay, "Minimize To Tray", LBLKEY_PREFIX + "minimizetotray");

      est.setAdditionalActionPerformer(new ChangeSelectionActionPerformer(ctt.getControls()));
      est.setAdditionalActionPerformer(new ChangeSelectionActionPerformer(mtt.getControls()));
    }

    /** Default download / upload limits available in the UI. */
    Group limit_group = new Group(cDisplay, SWT.NULL);
    Messages.setLanguageText(limit_group, LBLKEY_PREFIX + "set_ui_transfer_speeds");
    layout = new GridLayout();
    limit_group.setLayout(layout);
    limit_group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    Label limit_group_label = new Label(limit_group, SWT.WRAP);
    limit_group_label.setLayoutData(Utils.getWrappableLabelGridData(1, GridData.GRAB_HORIZONTAL));
    Messages.setLanguageText(
        limit_group_label, LBLKEY_PREFIX + "set_ui_transfer_speeds.description");

    String[] limit_types = new String[] {"download", "upload"};
    final String limit_type_prefix = "config.ui.speed.partitions.manual.";
    for (int i = 0; i < limit_types.length; i++) {
      final BooleanParameter bp =
          new BooleanParameter(
              limit_group,
              limit_type_prefix + limit_types[i] + ".enabled",
              false,
              LBLKEY_PREFIX + "set_ui_transfer_speeds.description." + limit_types[i]);
      final StringParameter sp =
          new StringParameter(limit_group, limit_type_prefix + limit_types[i] + ".values", "");
      IAdditionalActionPerformer iaap =
          new GenericActionPerformer(new Control[] {}) {
            public void performAction() {
              sp.getControl().setEnabled(bp.isSelected());
            }
          };

      gridData = new GridData();
      gridData.widthHint = 150;
      sp.setLayoutData(gridData);
      iaap.performAction();
      bp.setAdditionalActionPerformer(iaap);
    }

    new BooleanParameter(cDisplay, "Send Version Info", LBLKEY_PREFIX + "allowSendVersion");

    Composite cArea = new Composite(cDisplay, SWT.NULL);
    layout = new GridLayout();
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    layout.numColumns = 2;
    cArea.setLayout(layout);
    cArea.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    new LinkLabel(
        cArea,
        LBLKEY_PREFIX + "version.info.link",
        "http://www.azureuswiki.com/index.php/Version.azureusplatform.com");

    if (!Constants.isOSX) {

      BooleanParameter confirm =
          new BooleanParameter(
              cArea, "confirmationOnExit", "ConfigView.section.style.confirmationOnExit");
      gridData = new GridData();
      gridData.horizontalSpan = 2;
      confirm.setLayoutData(gridData);
    }

    cArea = new Composite(cDisplay, SWT.NULL);
    layout = new GridLayout();
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    layout.numColumns = 2;
    cArea.setLayout(layout);
    cArea.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    // config torrent removal

    BooleanParameter confirm_removal =
        new BooleanParameter(
            cArea, "confirm_torrent_removal", KEY_PREFIX + "confirm_torrent_removal");
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    confirm_removal.setLayoutData(gridData);

    // clear remembered decisions

    final Label clear_label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(clear_label, KEY_PREFIX + "cleardecisions");

    final Button clear_decisions = new Button(cArea, SWT.PUSH);
    Messages.setLanguageText(clear_decisions, KEY_PREFIX + "cleardecisionsbutton");

    clear_decisions.addListener(
        SWT.Selection,
        new Listener() {
          public void handleEvent(Event event) {

            COConfigurationManager.setParameter("MessageBoxWindow.decisions", new HashMap());
          }
        });

    final Label clear_tracker_label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(clear_tracker_label, KEY_PREFIX + "cleartrackers");

    final Button clear_tracker_button = new Button(cArea, SWT.PUSH);
    Messages.setLanguageText(clear_tracker_button, KEY_PREFIX + "cleartrackersbutton");

    clear_tracker_button.addListener(
        SWT.Selection,
        new Listener() {
          public void handleEvent(Event event) {
            TrackersUtil.getInstance().clearAllTrackers(true);
          }
        });

    final Label clear_save_path_label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(clear_save_path_label, KEY_PREFIX + "clearsavepaths");

    final Button clear_save_path_button = new Button(cArea, SWT.PUSH);
    Messages.setLanguageText(clear_save_path_button, KEY_PREFIX + "clearsavepathsbutton");

    clear_save_path_button.addListener(
        SWT.Selection,
        new Listener() {
          public void handleEvent(Event event) {
            COConfigurationManager.setParameter("saveTo_list", new StringListImpl());
          }
        });

    decisions_parameter_listener =
        new ParameterListener() {
          public void parameterChanged(String parameterName) {
            if (clear_decisions.isDisposed()) {

              // tidy up from previous incarnations

              COConfigurationManager.removeParameterListener("MessageBoxWindow.decisions", this);

            } else {

              boolean enabled =
                  COConfigurationManager.getMapParameter(
                              "MessageBoxWindow.decisions", new HashMap())
                          .size()
                      > 0;

              clear_label.setEnabled(enabled);
              clear_decisions.setEnabled(enabled);
            }
          }
        };

    decisions_parameter_listener.parameterChanged(null);

    COConfigurationManager.addParameterListener(
        "MessageBoxWindow.decisions", decisions_parameter_listener);

    // password

    label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(label, LBLKEY_PREFIX + "password");

    gridData = new GridData();
    gridData.widthHint = 150;
    PasswordParameter pw1 = new PasswordParameter(cArea, "Password");
    pw1.setLayoutData(gridData);
    Text t1 = (Text) pw1.getControl();

    // password confirm

    label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(label, LBLKEY_PREFIX + "passwordconfirm");
    gridData = new GridData();
    gridData.widthHint = 150;
    PasswordParameter pw2 = new PasswordParameter(cArea, "Password Confirm");
    pw2.setLayoutData(gridData);
    Text t2 = (Text) pw2.getControl();

    // password activated

    label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(label, LBLKEY_PREFIX + "passwordmatch");
    passwordMatch = new Label(cArea, SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 150;
    passwordMatch.setLayoutData(gridData);
    refreshPWLabel();

    t1.addModifyListener(
        new ModifyListener() {
          public void modifyText(ModifyEvent e) {
            refreshPWLabel();
          }
        });
    t2.addModifyListener(
        new ModifyListener() {
          public void modifyText(ModifyEvent e) {
            refreshPWLabel();
          }
        });

    // drag-drop

    label = new Label(cArea, SWT.NULL);
    Messages.setLanguageText(label, "ConfigView.section.style.dropdiraction");

    String[] drop_options = {
      "ConfigView.section.style.dropdiraction.opentorrents",
      "ConfigView.section.style.dropdiraction.sharefolder",
      "ConfigView.section.style.dropdiraction.sharefoldercontents",
      "ConfigView.section.style.dropdiraction.sharefoldercontentsrecursive",
    };

    String dropLabels[] = new String[drop_options.length];
    String dropValues[] = new String[drop_options.length];
    for (int i = 0; i < drop_options.length; i++) {

      dropLabels[i] = MessageText.getString(drop_options[i]);
      dropValues[i] = "" + i;
    }
    new StringListParameter(cArea, "config.style.dropdiraction", dropLabels, dropValues);

    // reset associations

    final PlatformManager platform = PlatformManagerFactory.getPlatformManager();

    if (platform.hasCapability(PlatformManagerCapabilities.RegisterFileAssociations)) {

      Composite cResetAssoc = new Composite(cArea, SWT.NULL);
      layout = new GridLayout();
      layout.marginHeight = 0;
      layout.marginWidth = 0;
      layout.numColumns = 2;
      cResetAssoc.setLayout(layout);
      cResetAssoc.setLayoutData(new GridData());

      label = new Label(cResetAssoc, SWT.NULL);
      Messages.setLanguageText(label, KEY_PREFIX + "resetassoc");

      Button reset = new Button(cResetAssoc, SWT.PUSH);
      Messages.setLanguageText(reset, KEY_PREFIX + "resetassocbutton"); // $NON-NLS-1$

      reset.addListener(
          SWT.Selection,
          new Listener() {
            public void handleEvent(Event event) {

              try {
                platform.registerApplication();

              } catch (PlatformManagerException e) {

                Logger.log(
                    new LogAlert(LogAlert.UNREPEATABLE, "Failed to register application", e));
              }
            }
          });

      new BooleanParameter(cArea, "config.interface.checkassoc", KEY_PREFIX + "checkassoc");
    }

    return cDisplay;
  }
  public Composite configSectionCreate(final Composite parent) {
    GridData gridData;

    Composite cSection = new Composite(parent, SWT.NULL);

    gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL + GridData.VERTICAL_ALIGN_FILL);
    cSection.setLayoutData(gridData);
    GridLayout advanced_layout = new GridLayout();
    cSection.setLayout(advanced_layout);

    int userMode = COConfigurationManager.getIntParameter("User Mode");
    if (userMode < REQUIRED_MODE) {
      Label label = new Label(cSection, SWT.WRAP);
      gridData = new GridData();
      label.setLayoutData(gridData);

      final String[] modeKeys = {
        "ConfigView.section.mode.beginner",
        "ConfigView.section.mode.intermediate",
        "ConfigView.section.mode.advanced"
      };

      String param1, param2;
      if (REQUIRED_MODE < modeKeys.length) param1 = MessageText.getString(modeKeys[REQUIRED_MODE]);
      else param1 = String.valueOf(REQUIRED_MODE);

      if (userMode < modeKeys.length) param2 = MessageText.getString(modeKeys[userMode]);
      else param2 = String.valueOf(userMode);

      label.setText(
          MessageText.getString("ConfigView.notAvailableForMode", new String[] {param1, param2}));

      return cSection;
    }

    new LinkLabel(
        cSection, gridData, CFG_PREFIX + "info.link", MessageText.getString(CFG_PREFIX + "url"));

    ///////////////////////   ADVANCED SOCKET SETTINGS GROUP //////////

    Group gSocket = new Group(cSection, SWT.NULL);
    Messages.setLanguageText(gSocket, CFG_PREFIX + "socket.group");
    gridData = new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.FILL_HORIZONTAL);
    gSocket.setLayoutData(gridData);
    GridLayout glayout = new GridLayout();
    glayout.numColumns = 3;
    gSocket.setLayout(glayout);

    // max simultaneous

    Label lmaxout = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(
        lmaxout, "ConfigView.section.connection.network.max.simultaneous.connect.attempts");
    gridData = new GridData();
    lmaxout.setLayoutData(gridData);

    IntParameter max_connects =
        new IntParameter(gSocket, "network.max.simultaneous.connect.attempts", 1, 100);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    max_connects.setLayoutData(gridData);

    // // max pending

    Label lmaxpout = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(
        lmaxpout, "ConfigView.section.connection.network.max.outstanding.connect.attempts");
    gridData = new GridData();
    lmaxpout.setLayoutData(gridData);

    IntParameter max_pending_connects =
        new IntParameter(gSocket, "network.tcp.max.connections.outstanding", 1, 65536);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    max_pending_connects.setLayoutData(gridData);

    // bind ip

    Label lbind = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(lbind, "ConfigView.label.bindip");
    gridData = new GridData();
    lbind.setLayoutData(gridData);

    StringParameter bindip = new StringParameter(gSocket, "Bind IP", "", false);
    gridData = new GridData();
    gridData.widthHint = 100;
    gridData.horizontalSpan = 2;
    bindip.setLayoutData(gridData);

    Text lbind2 = new Text(gSocket, SWT.READ_ONLY | SWT.MULTI);
    lbind2.setTabs(8);
    Messages.setLanguageText(
        lbind2,
        "ConfigView.label.bindip.details",
        new String[] {
          "\t"
              + NetworkAdmin.getSingleton()
                  .getNetworkInterfacesAsString()
                  .replaceAll("\\\n", "\n\t")
        });
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    lbind2.setLayoutData(gridData);

    BooleanParameter check_bind =
        new BooleanParameter(gSocket, "Check Bind IP On Start", "network.check.ipbinding");
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    check_bind.setLayoutData(gridData);

    BooleanParameter force_bind =
        new BooleanParameter(gSocket, "Enforce Bind IP", "network.enforce.ipbinding");
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    force_bind.setLayoutData(gridData);

    BooleanParameter bind_icon =
        new BooleanParameter(gSocket, "Show IP Bindings Icon", "network.ipbinding.icon.show");
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    bind_icon.setLayoutData(gridData);

    Label lpbind = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(lpbind, CFG_PREFIX + "bind_port");
    final IntParameter port_bind = new IntParameter(gSocket, "network.bind.local.port", 0, 65535);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    port_bind.setLayoutData(gridData);

    Label lmtu = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(lmtu, CFG_PREFIX + "mtu");
    final IntParameter mtu_size = new IntParameter(gSocket, "network.tcp.mtu.size");
    mtu_size.setMaximumValue(512 * 1024);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    mtu_size.setLayoutData(gridData);

    // sndbuf

    Label lsend = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(lsend, CFG_PREFIX + "SO_SNDBUF");
    final IntParameter SO_SNDBUF = new IntParameter(gSocket, "network.tcp.socket.SO_SNDBUF");
    gridData = new GridData();
    SO_SNDBUF.setLayoutData(gridData);

    final Label lsendcurr = new Label(gSocket, SWT.NULL);
    gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.horizontalIndent = 10;
    lsendcurr.setLayoutData(gridData);

    // rcvbuf

    Label lreceiv = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(lreceiv, CFG_PREFIX + "SO_RCVBUF");
    final IntParameter SO_RCVBUF = new IntParameter(gSocket, "network.tcp.socket.SO_RCVBUF");
    gridData = new GridData();
    SO_RCVBUF.setLayoutData(gridData);

    final Label lreccurr = new Label(gSocket, SWT.NULL);
    gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.horizontalIndent = 10;
    lreccurr.setLayoutData(gridData);

    final Runnable buff_updater =
        new Runnable() {
          public void run() {
            SocketChannel sc = null;

            int snd_val = 0;
            int rec_val = 0;

            try {
              sc = SocketChannel.open();

              Socket socket = sc.socket();

              if (SO_SNDBUF.getValue() == 0) {

                snd_val = socket.getSendBufferSize();
              }

              if (SO_RCVBUF.getValue() == 0) {

                rec_val = socket.getReceiveBufferSize();
              }
            } catch (Throwable e) {

            } finally {

              try {
                sc.close();

              } catch (Throwable e) {
              }
            }

            if (snd_val == 0) {
              lsendcurr.setText("");
            } else {
              Messages.setLanguageText(
                  lsendcurr, "label.current.equals", new String[] {String.valueOf(snd_val)});
            }

            if (rec_val == 0) {
              lreccurr.setText("");
            } else {
              Messages.setLanguageText(
                  lreccurr, "label.current.equals", new String[] {String.valueOf(rec_val)});
            }
          }
        };

    buff_updater.run();

    ParameterChangeAdapter buff_listener =
        new ParameterChangeAdapter() {
          public void parameterChanged(Parameter p, boolean caused_internally) {
            buff_updater.run();
          }
        };

    SO_RCVBUF.addChangeListener(buff_listener);
    SO_SNDBUF.addChangeListener(buff_listener);

    Label ltos = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(ltos, CFG_PREFIX + "IPDiffServ");
    final StringParameter IPDiffServ =
        new StringParameter(gSocket, "network.tcp.socket.IPDiffServ");
    gridData = new GridData();
    gridData.widthHint = 100;
    gridData.horizontalSpan = 2;
    IPDiffServ.setLayoutData(gridData);

    // do simple input verification, and registry key setting for TOS field
    IPDiffServ.addChangeListener(
        new ParameterChangeAdapter() {

          final Color obg = IPDiffServ.getControl().getBackground();

          final Color ofg = IPDiffServ.getControl().getForeground();

          public void parameterChanged(Parameter p, boolean caused_internally) {
            String raw = IPDiffServ.getValue();
            int value = -1;

            try {
              value = Integer.decode(raw).intValue();
            } catch (Throwable t) {
            }

            if (value < 0 || value > 255) { // invalid or no value entered
              ConfigurationManager.getInstance().removeParameter("network.tcp.socket.IPDiffServ");

              if (raw != null && raw.length() > 0) { // error state
                IPDiffServ.getControl().setBackground(Colors.red);
                IPDiffServ.getControl().setForeground(Colors.white);
              } else { // no value state
                IPDiffServ.getControl().setBackground(obg);
                IPDiffServ.getControl().setForeground(ofg);
              }

              enableTOSRegistrySetting(false); // disable registry setting if necessary
            } else { // passes test
              IPDiffServ.getControl().setBackground(obg);
              IPDiffServ.getControl().setForeground(ofg);

              enableTOSRegistrySetting(true); // enable registry setting if necessary
            }
          }
        });

    // read select

    Label lreadsel = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(
        lreadsel,
        CFG_PREFIX + "read_select",
        new String[] {
          String.valueOf(COConfigurationManager.getDefault("network.tcp.read.select.time"))
        });
    final IntParameter read_select =
        new IntParameter(gSocket, "network.tcp.read.select.time", 10, 250);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    read_select.setLayoutData(gridData);

    Label lreadselmin = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(
        lreadselmin,
        CFG_PREFIX + "read_select_min",
        new String[] {
          String.valueOf(COConfigurationManager.getDefault("network.tcp.read.select.min.time"))
        });
    final IntParameter read_select_min =
        new IntParameter(gSocket, "network.tcp.read.select.min.time", 0, 100);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    read_select_min.setLayoutData(gridData);

    // write select

    Label lwritesel = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(
        lwritesel,
        CFG_PREFIX + "write_select",
        new String[] {
          String.valueOf(COConfigurationManager.getDefault("network.tcp.write.select.time"))
        });
    final IntParameter write_select =
        new IntParameter(gSocket, "network.tcp.write.select.time", 10, 250);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    write_select.setLayoutData(gridData);

    Label lwriteselmin = new Label(gSocket, SWT.NULL);
    Messages.setLanguageText(
        lwriteselmin,
        CFG_PREFIX + "write_select_min",
        new String[] {
          String.valueOf(COConfigurationManager.getDefault("network.tcp.write.select.min.time"))
        });
    final IntParameter write_select_min =
        new IntParameter(gSocket, "network.tcp.write.select.min.time", 0, 100);
    gridData = new GridData();
    gridData.horizontalSpan = 2;
    write_select_min.setLayoutData(gridData);

    new BooleanParameter(cSection, "IPV6 Enable Support", "network.ipv6.enable.support");

    new BooleanParameter(cSection, "IPV6 Prefer Addresses", "network.ipv6.prefer.addresses");

    if (Constants.isWindowsVistaOrHigher && Constants.isJava7OrHigher) {

      new BooleanParameter(cSection, "IPV4 Prefer Stack", "network.ipv4.prefer.stack");
    }

    //////////////////////////////////////////////////////////////////////////

    return cSection;
  }
  private void buildOptions(
      final Composite parent, final PlatformManager platform, final Composite area, boolean rebuild)
      throws PlatformManagerException {
    if (rebuild) {

      Control[] kids = area.getChildren();

      for (Control k : kids) {
        k.dispose();
      }
    }

    String[] options = platform.getExplicitVMOptions();

    {
      // max mem

      long max_mem = AEMemoryMonitor.getJVMLongOption(options, "-Xmx");

      final int MIN_MAX_JVM = 32 * 1024 * 1024;

      GridData gridData = new GridData();
      Label label = new Label(area, SWT.NULL);
      label.setLayoutData(gridData);
      Messages.setLanguageText(label, "jvm.max.mem", new String[] {encodeDisplayLong(MIN_MAX_JVM)});

      gridData = new GridData();
      gridData.widthHint = 125;
      final StringParameter max_vm = new StringParameter(area, "jvm.max.mem", "", false);
      max_vm.setLayoutData(gridData);

      max_vm.setValue(max_mem == -1 ? "" : encodeDisplayLong(max_mem));

      max_vm.addChangeListener(
          new ParameterChangeAdapter() {
            private String last_value;

            public void parameterChanged(Parameter p, boolean caused_internally) {
              if (max_vm.isDisposed()) {

                max_vm.removeChangeListener(this);

                return;
              }

              String val = max_vm.getValue();

              if (last_value != null && last_value.equals(val)) {

                return;
              }

              last_value = val;

              try {
                long max_mem = decodeDisplayLong(val);

                if (max_mem < MIN_MAX_JVM) {

                  throw (new Exception("Min=" + encodeDisplayLong(MIN_MAX_JVM)));
                }

                String[] options = platform.getExplicitVMOptions();

                options = AEMemoryMonitor.setJVMLongOption(options, "-Xmx", max_mem);

                long min_mem = AEMemoryMonitor.getJVMLongOption(options, "-Xms");

                if (min_mem == -1 || min_mem > max_mem) {

                  options = AEMemoryMonitor.setJVMLongOption(options, "-Xms", max_mem);
                }

                platform.setExplicitVMOptions(options);

                buildOptions(parent, platform, area, true);

              } catch (Throwable e) {

                String param_name = MessageText.getString("jvm.max.mem");

                int pos = param_name.indexOf('[');

                if (pos != -1) {

                  param_name = param_name.substring(0, pos).trim();
                }

                MessageBoxShell mb =
                    new MessageBoxShell(
                        SWT.ICON_ERROR | SWT.OK,
                        MessageText.getString("ConfigView.section.invalid.value.title"),
                        MessageText.getString(
                            "ConfigView.section.invalid.value",
                            new String[] {val, param_name, Debug.getNestedExceptionMessage(e)}));

                mb.setParent(parent.getShell());
                mb.open(null);
              }
            }
          });

      label = new Label(area, SWT.NULL);
      gridData = new GridData(GridData.FILL_HORIZONTAL);
      label.setLayoutData(gridData);

      Long max_heap_mb = AEMemoryMonitor.getMaxHeapMB();

      if (max_heap_mb > 0) {

        Messages.setLanguageText(
            label,
            "jvm.max.mem.current",
            new String[] {
              DisplayFormatters.formatByteCountToKiBEtc(max_heap_mb * 1024 * 1024, true)
            });
      }
    }

    {
      // min mem

      final int MIN_MIN_JVM = 8 * 1024 * 1024;

      long min_mem = AEMemoryMonitor.getJVMLongOption(options, "-Xms");

      GridData gridData = new GridData();
      Label label = new Label(area, SWT.NULL);
      label.setLayoutData(gridData);
      Messages.setLanguageText(label, "jvm.min.mem", new String[] {encodeDisplayLong(MIN_MIN_JVM)});

      gridData = new GridData();
      gridData.widthHint = 125;
      final StringParameter min_vm = new StringParameter(area, "jvm.min.mem", "", false);
      min_vm.setLayoutData(gridData);

      min_vm.setValue(min_mem == -1 ? "" : encodeDisplayLong(min_mem));

      min_vm.addChangeListener(
          new ParameterChangeAdapter() {
            private String last_value;

            public void parameterChanged(Parameter p, boolean caused_internally) {
              if (min_vm.isDisposed()) {

                min_vm.removeChangeListener(this);

                return;
              }

              String val = min_vm.getValue();

              if (last_value != null && last_value.equals(val)) {

                return;
              }

              last_value = val;

              try {
                long min_mem = decodeDisplayLong(val);

                if (min_mem < MIN_MIN_JVM) {

                  throw (new Exception("Min=" + encodeDisplayLong(MIN_MIN_JVM)));
                }

                String[] options = platform.getExplicitVMOptions();

                options = AEMemoryMonitor.setJVMLongOption(options, "-Xms", min_mem);

                long max_mem = AEMemoryMonitor.getJVMLongOption(options, "-Xmx");

                if (max_mem == -1 || max_mem < min_mem) {

                  options = AEMemoryMonitor.setJVMLongOption(options, "-Xmx", min_mem);
                }

                platform.setExplicitVMOptions(options);

                buildOptions(parent, platform, area, true);

              } catch (Throwable e) {

                String param_name = MessageText.getString("jvm.min.mem");

                int pos = param_name.indexOf('[');

                if (pos != -1) {

                  param_name = param_name.substring(0, pos).trim();
                }

                MessageBoxShell mb =
                    new MessageBoxShell(
                        SWT.ICON_ERROR | SWT.OK,
                        MessageText.getString("ConfigView.section.invalid.value.title"),
                        MessageText.getString(
                            "ConfigView.section.invalid.value",
                            new String[] {val, param_name, Debug.getNestedExceptionMessage(e)}));

                mb.setParent(parent.getShell());
                mb.open(null);
              }
            }
          });

      label = new Label(area, SWT.NULL);
      gridData = new GridData(GridData.FILL_HORIZONTAL);
      label.setLayoutData(gridData);
    }

    {
      // max DIRECT mem

      final int MIN_DIRECT_JVM = 32 * 1024 * 1024;

      final String OPTION_KEY = "-XX:MaxDirectMemorySize=";

      long max_direct = AEMemoryMonitor.getJVMLongOption(options, OPTION_KEY);

      GridData gridData = new GridData();
      Label label = new Label(area, SWT.NULL);
      label.setLayoutData(gridData);
      Messages.setLanguageText(
          label, "jvm.max.direct.mem", new String[] {encodeDisplayLong(MIN_DIRECT_JVM)});

      gridData = new GridData();
      gridData.widthHint = 125;
      final StringParameter max_direct_vm =
          new StringParameter(area, "jvm.max.direct.mem", "", false);
      max_direct_vm.setLayoutData(gridData);

      max_direct_vm.setValue(max_direct == -1 ? "" : encodeDisplayLong(max_direct));

      max_direct_vm.addChangeListener(
          new ParameterChangeAdapter() {
            private String last_value;

            public void parameterChanged(Parameter p, boolean caused_internally) {
              if (max_direct_vm.isDisposed()) {

                max_direct_vm.removeChangeListener(this);

                return;
              }

              String val = max_direct_vm.getValue();

              if (last_value != null && last_value.equals(val)) {

                return;
              }

              last_value = val;

              try {
                long max_direct = decodeDisplayLong(val);

                if (max_direct < MIN_DIRECT_JVM) {

                  throw (new Exception("Min=" + encodeDisplayLong(MIN_DIRECT_JVM)));
                }

                String[] options = platform.getExplicitVMOptions();

                options = AEMemoryMonitor.setJVMLongOption(options, OPTION_KEY, max_direct);

                platform.setExplicitVMOptions(options);

                buildOptions(parent, platform, area, true);

              } catch (Throwable e) {

                String param_name = MessageText.getString("jvm.max.direct.mem");

                int pos = param_name.indexOf('[');

                if (pos != -1) {

                  param_name = param_name.substring(0, pos).trim();
                }

                MessageBoxShell mb =
                    new MessageBoxShell(
                        SWT.ICON_ERROR | SWT.OK,
                        MessageText.getString("ConfigView.section.invalid.value.title"),
                        MessageText.getString(
                            "ConfigView.section.invalid.value",
                            new String[] {val, param_name, Debug.getNestedExceptionMessage(e)}));

                mb.setParent(parent.getShell());
                mb.open(null);
              }
            }
          });

      label = new Label(area, SWT.NULL);
      gridData = new GridData(GridData.FILL_HORIZONTAL);
      label.setLayoutData(gridData);
      Messages.setLanguageText(label, "jvm.max.direct.mem.info");
    }

    // all options

    Label label = new Label(area, SWT.NULL);
    GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.horizontalSpan = 3;
    label.setLayoutData(gridData);
    Messages.setLanguageText(label, "jvm.options.summary");

    for (String option : options) {

      label = new Label(area, SWT.NULL);
      label.setText(option);
      gridData = new GridData();
      gridData.horizontalSpan = 3;
      gridData.horizontalIndent = 20;
      label.setLayoutData(gridData);
    }

    if (rebuild) {

      parent.layout(true, true);
    }
  }