Swing/TableRowHeader のバックアップ(No.21)

class RowHeaderList extends JList {
  private final JTable table;
  private final ListSelectionModel tableSelection;
  private final ListSelectionModel rListSelection;
  public RowHeaderList(ListModel model, JTable table) {
    super(model);
    this.table = table;
    setFixedCellHeight(table.getRowHeight());
    setCellRenderer(new RowHeaderRenderer(table.getTableHeader()));
    RollOverListener rol = new RollOverListener();
    addMouseListener(rol);
    addMouseMotionListener(rol);
    tableSelection = table.getSelectionModel();
    rListSelection = getSelectionModel();
  }
  class RowHeaderRenderer extends JLabel implements ListCellRenderer {
    private final JTableHeader header;
    public RowHeaderRenderer(JTableHeader header) {
      this.header = header;
      this.setOpaque(true);
      //this.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
      this.setBorder(BorderFactory.createMatteBorder(0,0,1,2,Color.GRAY));
      this.setHorizontalAlignment(CENTER);
      this.setForeground(header.getForeground());
      this.setBackground(header.getBackground());
      this.setFont(header.getFont());
    }
    @Override public Component getListCellRendererComponent(JList list, Object value,
               int index, boolean isSelected, boolean cellHasFocus) {
      if(index==pressedRowIndex) {
        setBackground(Color.GRAY);
      }else if(index==rollOverRowIndex) {
        setBackground(Color.WHITE);
      }else if(isSelected) {
        setBackground(Color.GRAY.brighter());
      }else{
        setForeground(header.getForeground());
        setBackground(header.getBackground());
      }
      setText((value==null)?"":value.toString());
      return this;
    }
  }
}