Esempio n. 1
0
 /**
  * The mnemonic for a type.
  *
  * @param type audio or video type.
  * @return the mnemonic.
  */
 private static char getDisplayedMnemonic(int type) {
   switch (type) {
     case DeviceConfigurationComboBoxModel.AUDIO:
       return NeomediaActivator.getResources().getI18nMnemonic("impl.media.configform.AUDIO");
     case DeviceConfigurationComboBoxModel.VIDEO:
       return NeomediaActivator.getResources().getI18nMnemonic("impl.media.configform.VIDEO");
     default:
       throw new IllegalArgumentException("type");
   }
 }
Esempio n. 2
0
 /**
  * A label for a type.
  *
  * @param type the type.
  * @return the label.
  */
 private static String getLabelText(int type) {
   switch (type) {
     case DeviceConfigurationComboBoxModel.AUDIO:
       return NeomediaActivator.getResources().getI18NString("impl.media.configform.AUDIO");
     case DeviceConfigurationComboBoxModel.AUDIO_CAPTURE:
       return NeomediaActivator.getResources().getI18NString("impl.media.configform.AUDIO_IN");
     case DeviceConfigurationComboBoxModel.AUDIO_NOTIFY:
       return NeomediaActivator.getResources().getI18NString("impl.media.configform.AUDIO_NOTIFY");
     case DeviceConfigurationComboBoxModel.AUDIO_PLAYBACK:
       return NeomediaActivator.getResources().getI18NString("impl.media.configform.AUDIO_OUT");
     case DeviceConfigurationComboBoxModel.VIDEO:
       return NeomediaActivator.getResources().getI18NString("impl.media.configform.VIDEO");
     default:
       throw new IllegalArgumentException("type");
   }
 }
Esempio n. 3
0
  /**
   * Creates all the controls (including encoding) for a type(AUDIO or VIDEO)
   *
   * @param type the type.
   * @return the build Component.
   */
  private static Component createControls(int type) {
    ConfigurationService cfg = NeomediaActivator.getConfigurationService();
    SIPCommTabbedPane container = new SIPCommTabbedPane();
    ResourceManagementService res = NeomediaActivator.getResources();

    if ((cfg == null) || !cfg.getBoolean(DEVICES_DISABLED_PROP, false)) {
      container.insertTab(
          res.getI18NString("impl.media.configform.DEVICES"),
          null,
          createBasicControls(type),
          null,
          0);
    }
    if ((cfg == null) || !cfg.getBoolean(ENCODINGS_DISABLED_PROP, false)) {
      container.insertTab(
          res.getI18NString("impl.media.configform.ENCODINGS"),
          null,
          new PriorityTable(
              new EncodingConfigurationTableModel(mediaService.getEncodingConfiguration(), type),
              100),
          null,
          1);
    }
    if ((type == DeviceConfigurationComboBoxModel.VIDEO)
        && ((cfg == null) || !cfg.getBoolean(VIDEO_MORE_SETTINGS_DISABLED_PROP, false))) {
      container.insertTab(
          res.getI18NString("impl.media.configform.VIDEO_MORE_SETTINGS"),
          null,
          createVideoAdvancedSettings(),
          null,
          2);
    }
    return container;
  }
Esempio n. 4
0
  /**
   * Create preview component.
   *
   * @param type type
   * @param comboBox the options.
   * @param prefSize the preferred size
   * @return the component.
   */
  private static Component createPreview(int type, final JComboBox comboBox, Dimension prefSize) {
    JComponent preview = null;

    if (type == DeviceConfigurationComboBoxModel.AUDIO) {
      Object selectedItem = comboBox.getSelectedItem();

      if (selectedItem instanceof AudioSystem) {
        AudioSystem audioSystem = (AudioSystem) selectedItem;

        if (!NoneAudioSystem.LOCATOR_PROTOCOL.equalsIgnoreCase(audioSystem.getLocatorProtocol())) {
          preview = new TransparentPanel(new GridBagLayout());
          createAudioSystemControls(audioSystem, preview);
        }
      }
    } else if (type == DeviceConfigurationComboBoxModel.VIDEO) {
      JLabel noPreview =
          new JLabel(
              NeomediaActivator.getResources().getI18NString("impl.media.configform.NO_PREVIEW"));

      noPreview.setHorizontalAlignment(SwingConstants.CENTER);
      noPreview.setVerticalAlignment(SwingConstants.CENTER);

      preview = createVideoContainer(noPreview);
      preview.setPreferredSize(prefSize);

      Object selectedItem = comboBox.getSelectedItem();
      CaptureDeviceInfo device = null;
      if (selectedItem instanceof DeviceConfigurationComboBoxModel.CaptureDevice)
        device = ((DeviceConfigurationComboBoxModel.CaptureDevice) selectedItem).info;

      Exception exception;
      try {
        createVideoPreview(device, preview);
        exception = null;
      } catch (IOException ex) {
        exception = ex;
      } catch (MediaException ex) {
        exception = ex;
      }
      if (exception != null) {
        logger.error("Failed to create preview for device " + device, exception);
        device = null;
      }
    }

    return preview;
  }
Esempio n. 5
0
  /**
   * Creates the video advanced settings.
   *
   * @return video advanced settings panel.
   */
  private static Component createVideoAdvancedSettings() {
    ResourceManagementService resources = NeomediaActivator.getResources();

    final DeviceConfiguration deviceConfig = mediaService.getDeviceConfiguration();

    TransparentPanel centerPanel = new TransparentPanel(new GridBagLayout());
    centerPanel.setMaximumSize(new Dimension(WIDTH, 150));

    JButton resetDefaultsButton =
        new JButton(resources.getI18NString("impl.media.configform.VIDEO_RESET"));
    JPanel resetButtonPanel = new TransparentPanel(new FlowLayout(FlowLayout.RIGHT));
    resetButtonPanel.add(resetDefaultsButton);

    final JPanel centerAdvancedPanel = new TransparentPanel(new BorderLayout());
    centerAdvancedPanel.add(centerPanel, BorderLayout.NORTH);
    centerAdvancedPanel.add(resetButtonPanel, BorderLayout.SOUTH);

    GridBagConstraints constraints = new GridBagConstraints();
    constraints.fill = GridBagConstraints.HORIZONTAL;
    constraints.anchor = GridBagConstraints.NORTHWEST;
    constraints.insets = new Insets(5, 5, 0, 0);
    constraints.gridx = 0;
    constraints.weightx = 0;
    constraints.weighty = 0;
    constraints.gridy = 0;

    centerPanel.add(
        new JLabel(resources.getI18NString("impl.media.configform.VIDEO_RESOLUTION")), constraints);
    constraints.gridy = 1;
    constraints.insets = new Insets(0, 0, 0, 0);
    final JCheckBox frameRateCheck =
        new SIPCommCheckBox(resources.getI18NString("impl.media.configform.VIDEO_FRAME_RATE"));
    centerPanel.add(frameRateCheck, constraints);
    constraints.gridy = 2;
    constraints.insets = new Insets(5, 5, 0, 0);
    centerPanel.add(
        new JLabel(resources.getI18NString("impl.media.configform.VIDEO_PACKETS_POLICY")),
        constraints);

    constraints.weightx = 1;
    constraints.gridx = 1;
    constraints.gridy = 0;
    constraints.insets = new Insets(5, 0, 0, 5);
    Object[] resolutionValues = new Object[DeviceConfiguration.SUPPORTED_RESOLUTIONS.length + 1];
    System.arraycopy(
        DeviceConfiguration.SUPPORTED_RESOLUTIONS,
        0,
        resolutionValues,
        1,
        DeviceConfiguration.SUPPORTED_RESOLUTIONS.length);
    final JComboBox sizeCombo = new JComboBox(resolutionValues);
    sizeCombo.setRenderer(new ResolutionCellRenderer());
    sizeCombo.setEditable(false);
    centerPanel.add(sizeCombo, constraints);

    // default value is 20
    final JSpinner frameRate = new JSpinner(new SpinnerNumberModel(20, 5, 30, 1));
    frameRate.addChangeListener(
        new ChangeListener() {
          public void stateChanged(ChangeEvent e) {
            deviceConfig.setFrameRate(
                ((SpinnerNumberModel) frameRate.getModel()).getNumber().intValue());
          }
        });
    constraints.gridy = 1;
    constraints.insets = new Insets(0, 0, 0, 5);
    centerPanel.add(frameRate, constraints);

    frameRateCheck.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            if (frameRateCheck.isSelected()) {
              deviceConfig.setFrameRate(
                  ((SpinnerNumberModel) frameRate.getModel()).getNumber().intValue());
            } else // unlimited framerate
            deviceConfig.setFrameRate(-1);

            frameRate.setEnabled(frameRateCheck.isSelected());
          }
        });

    final JSpinner videoMaxBandwidth =
        new JSpinner(
            new SpinnerNumberModel(deviceConfig.getVideoMaxBandwidth(), 1, Integer.MAX_VALUE, 1));
    videoMaxBandwidth.addChangeListener(
        new ChangeListener() {
          public void stateChanged(ChangeEvent e) {
            deviceConfig.setVideoMaxBandwidth(
                ((SpinnerNumberModel) videoMaxBandwidth.getModel()).getNumber().intValue());
          }
        });
    constraints.gridx = 1;
    constraints.gridy = 2;
    constraints.insets = new Insets(0, 0, 5, 5);
    centerPanel.add(videoMaxBandwidth, constraints);

    resetDefaultsButton.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            // reset to defaults
            sizeCombo.setSelectedIndex(0);
            frameRateCheck.setSelected(false);
            frameRate.setEnabled(false);
            frameRate.setValue(20);
            // unlimited framerate
            deviceConfig.setFrameRate(-1);
            videoMaxBandwidth.setValue(DeviceConfiguration.DEFAULT_VIDEO_MAX_BANDWIDTH);
          }
        });

    // load selected value or auto
    Dimension videoSize = deviceConfig.getVideoSize();

    if ((videoSize.getHeight() != DeviceConfiguration.DEFAULT_VIDEO_HEIGHT)
        && (videoSize.getWidth() != DeviceConfiguration.DEFAULT_VIDEO_WIDTH))
      sizeCombo.setSelectedItem(deviceConfig.getVideoSize());
    else sizeCombo.setSelectedIndex(0);
    sizeCombo.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            Dimension selectedVideoSize = (Dimension) sizeCombo.getSelectedItem();

            if (selectedVideoSize == null) {
              // the auto value, default one
              selectedVideoSize =
                  new Dimension(
                      DeviceConfiguration.DEFAULT_VIDEO_WIDTH,
                      DeviceConfiguration.DEFAULT_VIDEO_HEIGHT);
            }
            deviceConfig.setVideoSize(selectedVideoSize);
          }
        });

    frameRateCheck.setSelected(
        deviceConfig.getFrameRate() != DeviceConfiguration.DEFAULT_VIDEO_FRAMERATE);
    frameRate.setEnabled(frameRateCheck.isSelected());

    if (frameRate.isEnabled()) frameRate.setValue(deviceConfig.getFrameRate());

    return centerAdvancedPanel;
  }
Esempio n. 6
0
  /**
   * Creates the UI controls which are to control the details of a specific <tt>AudioSystem</tt>.
   *
   * @param audioSystem the <tt>AudioSystem</tt> for which the UI controls to control its details
   *     are to be created
   * @param container the <tt>JComponent</tt> into which the UI controls which are to control the
   *     details of the specified <tt>audioSystem</tt> are to be added
   */
  public static void createAudioSystemControls(AudioSystem audioSystem, JComponent container) {
    GridBagConstraints constraints = new GridBagConstraints();

    constraints.anchor = GridBagConstraints.NORTHWEST;
    constraints.fill = GridBagConstraints.HORIZONTAL;
    constraints.weighty = 0;

    int audioSystemFeatures = audioSystem.getFeatures();
    boolean featureNotifyAndPlaybackDevices =
        ((audioSystemFeatures & AudioSystem.FEATURE_NOTIFY_AND_PLAYBACK_DEVICES) != 0);

    constraints.gridx = 0;
    constraints.insets = new Insets(3, 0, 3, 3);
    constraints.weightx = 0;

    constraints.gridy = 0;
    container.add(
        new JLabel(getLabelText(DeviceConfigurationComboBoxModel.AUDIO_CAPTURE)), constraints);
    if (featureNotifyAndPlaybackDevices) {
      constraints.gridy = 2;
      container.add(
          new JLabel(getLabelText(DeviceConfigurationComboBoxModel.AUDIO_PLAYBACK)), constraints);
      constraints.gridy = 3;
      container.add(
          new JLabel(getLabelText(DeviceConfigurationComboBoxModel.AUDIO_NOTIFY)), constraints);
    }

    constraints.gridx = 1;
    constraints.insets = new Insets(3, 3, 3, 0);
    constraints.weightx = 1;

    JComboBox captureCombo = null;

    if (featureNotifyAndPlaybackDevices) {
      captureCombo = new JComboBox();
      captureCombo.setEditable(false);
      captureCombo.setModel(
          new DeviceConfigurationComboBoxModel(
              captureCombo,
              mediaService.getDeviceConfiguration(),
              DeviceConfigurationComboBoxModel.AUDIO_CAPTURE));
      constraints.gridy = 0;
      container.add(captureCombo, constraints);
    }

    int anchor = constraints.anchor;
    SoundLevelIndicator capturePreview =
        new SoundLevelIndicator(
            SimpleAudioLevelListener.MIN_LEVEL, SimpleAudioLevelListener.MAX_LEVEL);

    constraints.anchor = GridBagConstraints.CENTER;
    constraints.gridy = (captureCombo == null) ? 0 : 1;
    container.add(capturePreview, constraints);
    constraints.anchor = anchor;

    constraints.gridy = GridBagConstraints.RELATIVE;

    if (featureNotifyAndPlaybackDevices) {
      JComboBox playbackCombo = new JComboBox();

      playbackCombo.setEditable(false);
      playbackCombo.setModel(
          new DeviceConfigurationComboBoxModel(
              captureCombo,
              mediaService.getDeviceConfiguration(),
              DeviceConfigurationComboBoxModel.AUDIO_PLAYBACK));
      container.add(playbackCombo, constraints);

      JComboBox notifyCombo = new JComboBox();

      notifyCombo.setEditable(false);
      notifyCombo.setModel(
          new DeviceConfigurationComboBoxModel(
              captureCombo,
              mediaService.getDeviceConfiguration(),
              DeviceConfigurationComboBoxModel.AUDIO_NOTIFY));
      container.add(notifyCombo, constraints);
    }

    if ((AudioSystem.FEATURE_ECHO_CANCELLATION & audioSystemFeatures) != 0) {
      final SIPCommCheckBox echoCancelCheckBox =
          new SIPCommCheckBox(
              NeomediaActivator.getResources().getI18NString("impl.media.configform.ECHOCANCEL"));

      /*
       * First set the selected one, then add the listener in order to
       * avoid saving the value when using the default one and only
       * showing to user without modification.
       */
      echoCancelCheckBox.setSelected(mediaService.getDeviceConfiguration().isEchoCancel());
      echoCancelCheckBox.addItemListener(
          new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
              mediaService.getDeviceConfiguration().setEchoCancel(echoCancelCheckBox.isSelected());
            }
          });
      container.add(echoCancelCheckBox, constraints);
    }

    if ((AudioSystem.FEATURE_DENOISE & audioSystemFeatures) != 0) {
      final SIPCommCheckBox denoiseCheckBox =
          new SIPCommCheckBox(
              NeomediaActivator.getResources().getI18NString("impl.media.configform.DENOISE"));

      /*
       * First set the selected one, then add the listener in order to
       * avoid saving the value when using the default one and only
       * showing to user without modification.
       */
      denoiseCheckBox.setSelected(mediaService.getDeviceConfiguration().isDenoise());
      denoiseCheckBox.addItemListener(
          new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
              mediaService.getDeviceConfiguration().setDenoise(denoiseCheckBox.isSelected());
            }
          });
      container.add(denoiseCheckBox, constraints);
    }

    createAudioPreview(audioSystem, captureCombo, capturePreview);
  }
Esempio n. 7
0
  /** Creates an instance of <tt>ZrtpConfigurePanel</tt>. */
  public ZrtpConfigurePanel() {
    super(new BorderLayout());

    ResourceManagementService resources = NeomediaActivator.getResources();

    JPanel mainPanel = new TransparentPanel(new BorderLayout(0, 10));

    final JButton stdButton =
        new JButton(resources.getI18NString("impl.media.security.zrtp.STANDARD"));
    stdButton.setOpaque(false);

    final JButton mandButton =
        new JButton(resources.getI18NString("impl.media.security.zrtp.MANDATORY"));
    mandButton.setOpaque(false);

    final JButton saveButton = new JButton(resources.getI18NString("service.gui.SAVE"));
    saveButton.setOpaque(false);

    JPanel buttonBar = new TransparentPanel(new GridLayout(1, 7));
    buttonBar.add(stdButton);
    buttonBar.add(mandButton);
    buttonBar.add(Box.createHorizontalStrut(10));
    buttonBar.add(saveButton);

    ConfigurationService cfg = NeomediaActivator.getConfigurationService();
    boolean trusted = cfg.getBoolean(TRUSTED_PROP, false);
    boolean sasSign = cfg.getBoolean(SASSIGN_PROP, false);

    JPanel checkBar = new TransparentPanel(new GridLayout(1, 2));
    final JCheckBox trustedMitM =
        new SIPCommCheckBox(resources.getI18NString("impl.media.security.zrtp.TRUSTED"), trusted);
    final JCheckBox sasSignature =
        new SIPCommCheckBox(
            resources.getI18NString("impl.media.security.zrtp.SASSIGNATURE"), sasSign);
    checkBar.add(trustedMitM);
    checkBar.add(sasSignature);
    mainPanel.add(checkBar, BorderLayout.NORTH);

    ActionListener buttonListener =
        new ActionListener() {
          public void actionPerformed(ActionEvent event) {
            Object source = event.getSource();
            if (source == stdButton) {
              inActive.clear();
              active.setStandardConfig();
              pkc.setStandard();
              hc.setStandard();
              sc.setStandard();
              cc.setStandard();
              lc.setStandard();
            } else if (source == mandButton) {
              inActive.clear();
              active.setMandatoryOnly();
              pkc.setStandard();
              hc.setStandard();
              sc.setStandard();
              cc.setStandard();
              lc.setStandard();
            } else if (source == saveButton) {
              ConfigurationService cfg = NeomediaActivator.getConfigurationService();

              cfg.setProperty(TRUSTED_PROP, String.valueOf(active.isTrustedMitM()));
              cfg.setProperty(SASSIGN_PROP, String.valueOf(active.isSasSignature()));
              pkc.saveConfig();
              hc.saveConfig();
              sc.saveConfig();
              cc.saveConfig();
              lc.saveConfig();
            } else return;
          }
        };
    stdButton.addActionListener(buttonListener);
    mandButton.addActionListener(buttonListener);
    saveButton.addActionListener(buttonListener);

    ItemListener itemListener =
        new ItemListener() {
          public void itemStateChanged(ItemEvent e) {
            Object source = e.getItemSelectable();

            if (source == trustedMitM) {
              active.setTrustedMitM(trustedMitM.isSelected());
            } else if (source == sasSignature) {
              active.setSasSignature(sasSignature.isSelected());
            }
          }
        };
    trustedMitM.addItemListener(itemListener);
    sasSignature.addItemListener(itemListener);

    JTabbedPane algorithmsPane = new SIPCommTabbedPane();

    algorithmsPane.addTab(resources.getI18NString("impl.media.security.zrtp.PUB_KEYS"), pkc);
    algorithmsPane.addTab(resources.getI18NString("impl.media.security.zrtp.HASHES"), hc);
    algorithmsPane.addTab(resources.getI18NString("impl.media.security.zrtp.SYM_CIPHERS"), cc);
    algorithmsPane.addTab(resources.getI18NString("impl.media.security.zrtp.SAS_TYPES"), sc);
    algorithmsPane.addTab(resources.getI18NString("impl.media.security.zrtp.SRTP_LENGTHS"), lc);

    algorithmsPane.setMinimumSize(new Dimension(400, 100));
    algorithmsPane.setPreferredSize(new Dimension(400, 200));
    mainPanel.add(algorithmsPane, BorderLayout.CENTER);

    mainPanel.add(buttonBar, BorderLayout.SOUTH);

    add(mainPanel);
  }
Esempio n. 8
0
  private <T extends Enum<T>> void createControls(JPanel panel, ZrtpConfigureTableModel<T> model) {
    ResourceManagementService resources = NeomediaActivator.getResources();

    final JButton upButton = new JButton(resources.getI18NString("impl.media.configform.UP"));
    upButton.setOpaque(false);

    final JButton downButton = new JButton(resources.getI18NString("impl.media.configform.DOWN"));
    downButton.setOpaque(false);

    Container buttonBar = new TransparentPanel(new GridLayout(0, 1));
    buttonBar.add(upButton);
    buttonBar.add(downButton);

    panel.setBorder(BorderFactory.createEmptyBorder(MARGIN, MARGIN, MARGIN, MARGIN));
    panel.setLayout(new GridBagLayout());

    final JTable table = new JTable(model.getRowCount(), 2);
    table.setShowGrid(false);
    table.setTableHeader(null);
    table.setModel(model);
    // table.setFillsViewportHeight(true); // Since 1.6 only - nicer view

    /*
     * The first column contains the check boxes which enable/disable their
     * associated encodings and it doesn't make sense to make it wider than
     * the check boxes.
     */
    TableColumnModel tableColumnModel = table.getColumnModel();
    TableColumn tableColumn = tableColumnModel.getColumn(0);
    tableColumn.setMaxWidth(tableColumn.getMinWidth() + 5);
    table.doLayout();

    GridBagConstraints constraints = new GridBagConstraints();
    constraints.anchor = GridBagConstraints.CENTER;
    constraints.fill = GridBagConstraints.BOTH;
    constraints.gridwidth = 1;
    constraints.gridx = 0;
    constraints.gridy = 1;
    constraints.weightx = 1;
    constraints.weighty = 1;
    panel.add(new JScrollPane(table), constraints);

    constraints.anchor = GridBagConstraints.NORTHEAST;
    constraints.fill = GridBagConstraints.NONE;
    constraints.gridwidth = 1;
    constraints.gridx = 1;
    constraints.gridy = 1;
    constraints.weightx = 0;
    constraints.weighty = 0;
    panel.add(buttonBar, constraints);

    ListSelectionListener tableSelectionListener =
        new ListSelectionListener() {
          @SuppressWarnings("unchecked")
          public void valueChanged(ListSelectionEvent event) {
            if (table.getSelectedRowCount() == 1) {
              int selectedRow = table.getSelectedRow();
              if (selectedRow > -1) {
                ZrtpConfigureTableModel<T> model = (ZrtpConfigureTableModel<T>) table.getModel();
                upButton.setEnabled(selectedRow > 0 && model.checkEnableUp(selectedRow));
                downButton.setEnabled(
                    selectedRow < (table.getRowCount() - 1) && model.checkEnableDown(selectedRow));
                return;
              }
            }
            upButton.setEnabled(false);
            downButton.setEnabled(false);
          }
        };
    table.getSelectionModel().addListSelectionListener(tableSelectionListener);

    TableModelListener tableListener =
        new TableModelListener() {
          @SuppressWarnings("unchecked")
          public void tableChanged(TableModelEvent e) {
            if (table.getSelectedRowCount() == 1) {
              int selectedRow = table.getSelectedRow();
              if (selectedRow > -1) {
                ZrtpConfigureTableModel<T> model = (ZrtpConfigureTableModel<T>) table.getModel();
                upButton.setEnabled(selectedRow > 0 && model.checkEnableUp(selectedRow));
                downButton.setEnabled(
                    selectedRow < (table.getRowCount() - 1) && model.checkEnableDown(selectedRow));
                return;
              }
            }
            upButton.setEnabled(false);
            downButton.setEnabled(false);
          }
        };
    table.getModel().addTableModelListener(tableListener);

    tableSelectionListener.valueChanged(null);

    ActionListener buttonListener =
        new ActionListener() {
          @SuppressWarnings("unchecked")
          public void actionPerformed(ActionEvent event) {
            Object source = event.getSource();
            boolean up;
            if (source == upButton) up = true;
            else if (source == downButton) up = false;
            else return;

            int index =
                ((ZrtpConfigureTableModel<T>) table.getModel())
                    .move(table.getSelectedRow(), up, up);
            table.getSelectionModel().setSelectionInterval(index, index);
          }
        };
    upButton.addActionListener(buttonListener);
    downButton.addActionListener(buttonListener);
  }