private void selectRow(int row, boolean extend) {
    if (row == -1) return;
    DirDiffElementImpl element = myModel.getElementAt(row);
    if (element == null || element.isSeparator()) return;
    myTable.changeSelection(row, (myModel.getColumnCount() - 1) / 2, false, extend);
  }
private void selectRow(int row, boolean extend)