Swing/TableHeaderCheckBox のバックアップ(No.12)

enum Status { SELECTED, DESELECTED, INDETERMINATE }
class HeaderRenderer extends JCheckBox implements TableCellRenderer {
  private final JLabel label = new JLabel("Check All");
  private int targetColumnIndex;
  public HeaderRenderer(JTableHeader header, int index) {
    super((String)null);
    this.targetColumnIndex = index;
    setOpaque(false);
    setFont(header.getFont());
    header.addMouseListener(new MouseAdapter() {
      @Override public void mouseClicked(MouseEvent e) {
        JTableHeader header = (JTableHeader)e.getSource();
        JTable table = header.getTable();
        TableColumnModel columnModel = table.getColumnModel();
        int vci = columnModel.getColumnIndexAtX(e.getX());
        int mci = table.convertColumnIndexToModel(vci);
        if(mci == targetColumnIndex) {
          TableColumn column = columnModel.getColumn(vci);
          Object v = column.getHeaderValue();
          boolean b = Status.DESELECTED.equals(v)?true:false;
          TableModel m = table.getModel();
          for(int i=0; i<m.getRowCount(); i++) m.setValueAt(b, i, mci);
          column.setHeaderValue(b?Status.SELECTED:Status.DESELECTED);
          //header.repaint();
        }
      }
    });
  }
  @Override public Component getTableCellRendererComponent(
      JTable tbl, Object val, boolean isS, boolean hasF, int row, int col) {
    TableCellRenderer r = tbl.getTableHeader().getDefaultRenderer();
    JLabel l = (JLabel)r.getTableCellRendererComponent(tbl,val,isS,hasF,row,col);
    if(targetColumnIndex==tbl.convertColumnIndexToModel(col)) {
      if(val instanceof Status) {
        switch((Status)val) {
          case SELECTED:    setSelected(true);  setEnabled(true);  break;
          case DESELECTED:  setSelected(false); setEnabled(true);  break;
          case INDETERMINATE: setSelected(true);  setEnabled(false); break;
        }
      }else{
        setSelected(true); setEnabled(false);
      }
      label.setIcon(new ComponentIcon(this));
      l.setIcon(new ComponentIcon(label));
      l.setText(null); //XXX: Nimbus???
    }
    return l;
  }
}
class CheckBoxIcon implements Icon{
  private final JCheckBox check;
  public CheckBoxIcon(JCheckBox check) {
    this.check = check;
  }
  @Override public int getIconWidth() {
    return check.getPreferredSize().width;
  }
  @Override public int getIconHeight() {
    return check.getPreferredSize().height;
  }
  @Override public void paintIcon(Component c, Graphics g, int x, int y) {
    SwingUtilities.paintComponent(
        g, check, (Container)c, x, y, getIconWidth(), getIconHeight());
  }
}