/**
   * Closes dialog box when the OK button is pressed, sets variables and calls algorithm.
   *
   * @param event Event that triggers function.
   */
  public void actionPerformed(ActionEvent event) {
    String command = event.getActionCommand();
    Object source = event.getSource();

    if (command.equals("OK")) {

      if (setVariables()) {
        callAlgorithm();
      }
    } else if (command.equals("Cancel")) {
      dispose();
    } else if (command.equals("Help")) {
      // MipavUtil.showHelp("");
    } else if (source.equals(doRicianCheckBox)) {
      if (doRicianCheckBox.isSelected()) {
        labelDegree.setEnabled(true);
        textDegree.setEnabled(true);
      } else {
        labelDegree.setEnabled(false);
        textDegree.setEnabled(false);
      }
    } else { // else if (source == thresholdCheckbox)
      super.actionPerformed(event);
    }
  }
  /**
   * Closes dialog box when the OK button is pressed and calls the algorithm.
   *
   * @param event Event that triggers function.
   */
  public void actionPerformed(ActionEvent event) {
    String command = event.getActionCommand();
    Object source = event.getSource();

    if (command.equals("OK")) {

      if (setVariables()) {
        callAlgorithm();
      }
    } else if (command.equals("Script")) {
      callAlgorithm();
    } else if (command.equals("Cancel")) {
      dispose();
    } else if (source == blueSmoothBox) {
      if (blueSmoothBox.isSelected()) {
        interpolationLabel.setEnabled(true);
        interpolationText.setEnabled(true);
      } else {
        interpolationLabel.setEnabled(false);
        interpolationText.setEnabled(false);
      }
    } else {
      super.actionPerformed(event);
    }
  }
  /** Loads the default settings from Preferences to set up the dialog. */
  public void legacyLoadDefaults() {
    String defaultsString = Preferences.getDialogDefaults(getDialogName());

    if ((defaultsString != null) && (newImage != null)) {

      try {
        StringTokenizer st = new StringTokenizer(defaultsString, ",");

        textSearchWindowSide.setText("" + MipavUtil.getInt(st));
        textSimilarityWindowSide.setText("" + MipavUtil.getInt(st));
        textNoiseStandardDeviation.setText("" + MipavUtil.getFloat(st));
        textDegree.setText("" + MipavUtil.getFloat(st));
        doRician = MipavUtil.getBoolean(st);
        doRicianCheckBox.setSelected(doRician);
        textDegree.setEnabled(doRician);
        labelDegree.setEnabled(doRician);
        image25DCheckBox.setSelected(MipavUtil.getBoolean(st));

        if (MipavUtil.getBoolean(st)) {
          newImage.setSelected(true);
        } else {
          replaceImage.setSelected(true);
        }

      } catch (Exception ex) {

        // since there was a problem parsing the defaults string, start over with the original
        // defaults
        Preferences.debug("Resetting defaults for dialog: " + getDialogName());
        Preferences.removeProperty(getDialogName());
      }
    }
  }
  /**
   * Initializes the GUI by creating the components, placing them in the dialog, and displaying
   * them.
   */
  private void init() {
    setForeground(Color.black);

    setTitle("Nonlocal Means Filter");

    JPanel mainPanel;
    mainPanel = new JPanel();
    mainPanel.setBorder(BorderFactory.createEmptyBorder(3, 3, 3, 3));
    mainPanel.setLayout(new GridBagLayout());

    GridBagConstraints gbc = new GridBagConstraints();
    gbc.gridwidth = 1;
    gbc.gridheight = 1;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.weightx = 1;
    gbc.insets = new Insets(3, 3, 3, 3);
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.fill = GridBagConstraints.HORIZONTAL;

    paramPanel = new JPanel(new GridBagLayout());
    paramPanel.setForeground(Color.black);
    paramPanel.setBorder(buildTitledBorder("Parameters"));
    mainPanel.add(paramPanel, gbc);

    GridBagConstraints gbc2 = new GridBagConstraints();
    gbc2.gridwidth = 1;
    gbc2.gridheight = 1;
    gbc2.anchor = GridBagConstraints.WEST;
    gbc2.weightx = 1;
    gbc2.insets = new Insets(3, 3, 3, 3);
    gbc2.gridx = 0;
    gbc2.gridy = 0;
    gbc2.fill = GridBagConstraints.HORIZONTAL;

    labelSearchWindowSide = createLabel("Search window side (odd)");

    paramPanel.add(labelSearchWindowSide, gbc2);

    gbc2.gridx = 1;
    textSearchWindowSide = createTextField("15");
    paramPanel.add(textSearchWindowSide, gbc2);

    gbc2.gridx = 0;
    gbc2.gridy = 1;
    labelSimilarityWindowSide = createLabel("Similarity window side (odd) ");
    paramPanel.add(labelSimilarityWindowSide, gbc2);

    gbc2.gridx = 1;
    textSimilarityWindowSide = createTextField("7");
    paramPanel.add(textSimilarityWindowSide, gbc2);

    gbc2.gridx = 0;
    gbc2.gridy = 2;
    labelNoiseStandardDeviation = createLabel("Noise standard deviation ");
    paramPanel.add(labelNoiseStandardDeviation, gbc2);

    gbc2.gridx = 1;
    textNoiseStandardDeviation = createTextField("10.0");
    paramPanel.add(textNoiseStandardDeviation, gbc2);

    gbc2.gridx = 0;
    gbc2.gridy = 3;
    labelDegree = createLabel("Degree of filtering ");
    labelDegree.setEnabled(doRician);
    paramPanel.add(labelDegree, gbc2);

    gbc2.gridx = 1;
    textDegree = createTextField("1.414");
    textDegree.setEnabled(doRician);
    paramPanel.add(textDegree, gbc2);

    gbc2.gridx = 0;
    gbc2.gridy = 4;
    doRicianCheckBox = new JCheckBox("Deal with Rician noise in MRI");
    doRicianCheckBox.setFont(serif12);
    doRicianCheckBox.setSelected(false);
    doRicianCheckBox.addActionListener(this);
    paramPanel.add(doRicianCheckBox, gbc2);

    if (image.getNDims() > 2) {
      gbc2.gridx = 0;
      gbc2.gridy = 5;
      gbc2.gridwidth = 2;

      image25DCheckBox = new JCheckBox("Process each slice independently (2.5D)");
      image25DCheckBox.setFont(serif12);
      paramPanel.add(image25DCheckBox, gbc2);
      image25DCheckBox.setSelected(false);
    } // if (image.getNDims > 2)

    JPanel outputOptPanel = new JPanel(new GridLayout(1, 2));
    destinationPanel = new JPanel(new BorderLayout());
    destinationPanel.setForeground(Color.black);
    destinationPanel.setBorder(buildTitledBorder("Destination"));
    outputOptPanel.add(destinationPanel);

    destinationGroup = new ButtonGroup();
    newImage = new JRadioButton("New image", true);
    newImage.setBounds(10, 16, 120, 25);
    newImage.setFont(serif12);
    destinationGroup.add(newImage);
    destinationPanel.add(newImage, BorderLayout.NORTH);

    replaceImage = new JRadioButton("Replace image", false);
    replaceImage.setFont(serif12);
    destinationGroup.add(replaceImage);
    destinationPanel.add(replaceImage, BorderLayout.CENTER);

    // Only if the image is unlocked can it be replaced.
    if (image.getLockStatus() == ModelStorageBase.UNLOCKED) {
      replaceImage.setEnabled(true);
    } else {
      replaceImage.setEnabled(false);
    }

    gbc.gridx = 0;
    gbc.gridy = 1;
    mainPanel.add(outputOptPanel, gbc);

    mainDialogPanel.add(mainPanel, BorderLayout.CENTER);
    mainDialogPanel.add(buildButtons(), BorderLayout.SOUTH);

    getContentPane().add(mainDialogPanel);

    pack();
    setResizable(true);
    // setVisible(true);

    System.gc();
  }