private void setTitle(String title, boolean left) {
   Editor editor = left ? getEditor1() : getEditor2();
   if (editor == null) return;
   title = addReadOnly(title, editor);
   JLabel label = new JLabel(title);
   if (left) {
     myLeftSide.setTitle(label);
   } else {
     myRightSide.setTitle(label);
   }
 }
 private void setTitle2(JComponent title) {
   myRightSide.setTitle(title);
 }
 private void setTitle1(JComponent title) {
   myLeftSide.setTitle(title);
 }