/**
   * Create widgets to enable user to input data for fields of path type
   *
   * @param parent composite where the widgets will be attached to
   * @param monkeyOption the corresponding monkey option
   */
  private void createWidgetsForPathType(final Composite parent, final MonkeyOption monkeyOption) {
    // create input text
    final Text pathText = new Text(parent, SWT.SINGLE | SWT.BORDER);
    pathText.setText(monkeyOption.getValue());
    monkeyOption.setValueWidget(pathText);
    pathText.setLayoutData(new GridData(SWT.FILL, SWT.NULL, true, false));
    pathText.addModifyListener(
        new ModifyListener() {
          @Override
          public void modifyText(ModifyEvent e) {
            monkeyOption.setValue(pathText.getText());
            notifyCompositeChangeListeners();
          }
        });
    // create browse button
    Button pathBrowseButton = new Button(parent, SWT.PUSH);
    pathBrowseButton.setText(AndroidNLS.UI_General_BrowseButtonLabel);
    GridData data = new GridData(SWT.NULL, SWT.NULL, false, false);
    pathBrowseButton.setLayoutData(data);
    pathBrowseButton.addSelectionListener(
        new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            String selectedPath = null;

            if (monkeyOption.getTypeDetails().equals(TYPE_PATH_DIR)) {
              DirectoryDialog directoryDialog = new DirectoryDialog(getShell(), SWT.OPEN);
              selectedPath = directoryDialog.open();
            } else {
              FileDialog fileDialog = new FileDialog(getShell(), SWT.OPEN);
              String[] filterExtensions = {"*" + monkeyOption.getTypeDetails()};
              fileDialog.setFilterExtensions(filterExtensions);
              selectedPath = fileDialog.open();
            }

            if (selectedPath != null) {
              pathText.setText(selectedPath);
            }
          }
        });
  }
 /**
  * Create widgets to enable user to input data for fields of text or number type
  *
  * @param parent composite where the widgets will be attached to
  * @param monkeyOption the corresponding monkey option
  */
 private void createWidgetsForTextOrNumberType(
     final Composite parent, final MonkeyOption monkeyOption) {
   // create input text
   if ((monkeyOption.getPreDefinedValues() == null)
       || (monkeyOption.getPreDefinedValues().size() == 0)) {
     final Text inputText = new Text(parent, SWT.SINGLE | SWT.BORDER);
     inputText.setText(monkeyOption.getValue());
     monkeyOption.setValueWidget(inputText);
     inputText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));
     inputText.addModifyListener(
         new ModifyListener() {
           @Override
           public void modifyText(ModifyEvent e) {
             monkeyOption.setValue(inputText.getText());
             notifyCompositeChangeListeners();
           }
         });
   }
   // create combobox
   else {
     final Combo combo = new Combo(parent, SWT.READ_ONLY);
     monkeyOption.setValueWidget(combo);
     int selectedIndex = 0;
     for (String preDefinedValue : monkeyOption.getPreDefinedValues()) {
       combo.add(preDefinedValue);
       if (monkeyOption.getValue().equals(preDefinedValue)) {
         combo.select(selectedIndex);
       } else {
         selectedIndex++;
       }
     }
     combo.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));
     combo.addModifyListener(
         new ModifyListener() {
           @Override
           public void modifyText(ModifyEvent e) {
             monkeyOption.setValue(combo.getText());
             notifyCompositeChangeListeners();
           }
         });
   }
 }
  /** Create widgets for monkey options */
  private void createUI() {

    Composite mainComposite = this;
    Layout mainLayout = new GridLayout();
    mainComposite.setLayout(mainLayout);

    // list of monkey options groups
    List<MonkeyOptionsGroup> monkeyOptionsGroupsList =
        MonkeyOptionsMgt.getMonkeyOptionsGroupsList();

    // list of monkey options in each group
    List<MonkeyOption> monkeyOptions = null;

    // Create Tab Folder
    final TabFolder tabFolder = new TabFolder(mainComposite, SWT.NULL);
    GridData data = new GridData(SWT.FILL, SWT.FILL, true, false);
    data.heightHint = TABFOLDER_HEIGHT_HINT;
    tabFolder.setLayoutData(data);

    /*
     * Iterate through Monkey Groups
     */
    for (MonkeyOptionsGroup monkeyOptionGroup : monkeyOptionsGroupsList) {

      // Create Tab Item
      TabItem tabItem = new TabItem(tabFolder, SWT.NULL);
      tabItem.setText(monkeyOptionGroup.getTitle());
      Composite group = new Composite(tabFolder, SWT.NULL);
      group.setLayout(new GridLayout(3, false));
      group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
      tabItem.setControl(group);

      // get monkey options in this group
      monkeyOptions = monkeyOptionGroup.getMonkeyOptions();

      /*
       * Iterate through Monkey Options in this group
       */
      for (final MonkeyOption monkeyOption : monkeyOptions) {

        // create a checkbox for each monkey option
        Button checkbox = new Button(group, SWT.CHECK);
        checkbox.setSelection(monkeyOption.isChecked());
        checkbox.setText(monkeyOption.getUserFriendlyName());
        checkbox.setToolTipText(monkeyOption.getName() + ": " + monkeyOption.getDescription());

        monkeyOption.setCheckedWidget(checkbox);
        checkbox.addSelectionListener(
            new SelectionAdapter() {
              @Override
              public void widgetSelected(SelectionEvent e) {
                boolean checkedStatus = ((Button) e.widget).getSelection();
                monkeyOption.setChecked(checkedStatus);
                notifyCompositeChangeListeners();
              }
            });
        GridData checkboxData = new GridData(SWT.NULL, SWT.FILL, false, false);
        checkbox.setLayoutData(checkboxData);

        // Create input fields depending on the monkey option type
        switch (monkeyOption.getType()) {
          case TYPE_NONE:
            // extend checkbox area along the line
            checkboxData.widthHint = SWT.DEFAULT;
            checkboxData.horizontalSpan = 3;
            checkbox.setLayoutData(checkboxData);
            break;

          case TYPE_TEXT:
          case TYPE_NUMBER:
            createWidgetsForTextOrNumberType(group, monkeyOption);
            break;

          case TYPE_PATH:
            createWidgetsForPathType(group, monkeyOption);
            break;

          default:
            // none

        }
      }
    }

    /*
     * Command Line area
     */
    Composite commandLineArea = new Composite(mainComposite, SWT.NONE); // composite
    commandLineArea.setLayout(new GridLayout(2, false));
    data = new GridData(SWT.FILL, SWT.FILL, true, true);
    commandLineArea.setLayoutData(data);

    Label commandLineLabel = new Label(commandLineArea, SWT.NONE); // label
    commandLineLabel.setText(AndroidNLS.UI_MonkeyOptions_CommandLine);
    data = new GridData(SWT.FILL, SWT.FILL, false, true);
    commandLineLabel.setLayoutData(data);

    commandLine =
        new Text(commandLineArea, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.V_SCROLL); // text
    data = new GridData(SWT.FILL, SWT.FILL, true, true);
    commandLineArea.pack();
    data.widthHint = commandLineArea.getBounds().width - commandLineLabel.getBounds().width;
    data.heightHint = commandLineArea.getBounds().height;
    commandLine.setLayoutData(data);
    commandLine.setText(MonkeyOptionsMgt.getParamList());
    commandLine.setEditable(false);
  }