Swing/DisabledItem のバックアップ(No.7)

final JList = new JList();
final ListCellRenderer r = list.getCellRenderer();
final Vector disableIndexSet = new Vector();
initDisableIndex(disableIndexSet);
list.setCellRenderer(new ListCellRenderer() {
  public Component getListCellRendererComponent(JList list, Object value,
                   int index, boolean isSelected, boolean cellHasFocus) {
    Component c;
    if(disableIndexSet.contains(Integer.valueOf(index))) {
      c = r.getListCellRendererComponent(list,value,index,false,false);
      c.setEnabled(false);
    }else{
      c = r.getListCellRendererComponent(list,value,index,isSelected,cellHasFocus);
    }
    return c;
  }
});
ActionMap am = list.getActionMap();
am.put("selectNextRow", new AbstractAction() {
  public void actionPerformed(ActionEvent ae) {
    int index = list.getSelectedIndex()+1;
    for(int i=index;i<list.getModel().getSize();i++) {
      if(!disableIndexSet.contains(Integer.valueOf(i))) {
        list.setSelectedIndex(i);
        break;
      }
    }
  }
});