private void updatePresentation() {
    myCommitMessageScrollPane.setVisible(myShowCommitMessage);

    if (myShowSideBorders) {
      if (myShowCommitMessage) {
        myChangesBrowser.setViewerBorder(IdeBorderFactory.createBorder(SideBorder.TOP | SideBorder.LEFT | SideBorder.RIGHT));
        myCommitMessageScrollPane.setBorder(IdeBorderFactory.createBorder(SideBorder.LEFT | SideBorder.RIGHT | SideBorder.BOTTOM));
      }
      else {
        myChangesBrowser.setViewerBorder(IdeBorderFactory.createBorder(SideBorder.ALL));
      }
    }
    else {
      myChangesBrowser.setViewerBorder(IdeBorderFactory.createBorder(SideBorder.TOP));
      myCommitMessageScrollPane.setBorder(JBUI.Borders.empty());
    }
  }
private void updatePresentation()