void update() {
   for (int i = 0; i < getComponentCount(); ++i) {
     Component component = getComponent(i);
     if (component instanceof JButton) {
       final JButton button = (JButton) component;
       button.setEnabled(!isSearchInProgress());
     }
   }
 }
    public void addButtonRunnable(int index, final Runnable runnable, String text) {
      if (getBorder() == null) setBorder(IdeBorderFactory.createBorder(SideBorder.TOP));

      final JButton button = new JButton(UIUtil.replaceMnemonicAmpersand(text));
      DialogUtil.registerMnemonic(button);

      button.setFocusable(false);
      button.addActionListener(
          new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
              runnable.run();
            }
          });

      add(button, index);

      invalidate();
      if (getParent() != null) {
        getParent().validate();
      }
    }