Swing/TablePagination のバックアップの現在との差分(No.2)

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private static int LR_PAGE_SIZE = 5;
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#screenshot
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private final String[] columnNames = {"Year", "String", "Comment"};
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private final DefaultTableModel model = new DefaultTableModel(null, columnNames) {
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  @Override public Class<?> getColumnClass(int column) {
    return (column == 0) ? Integer.class : Object.class;
  }
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};
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private TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
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private Box box = Box.createHorizontalBox();
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**サンプルコード [#l576bdcf]
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#code{{
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void initLinkBox(Box box, TestModel m, final TableRowSorter<TestModel> sorter,
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                 final int size, final int step) {
  m.setRowCount(0);
  for(int i=0;i<size;i++) {
    m.addTest(new Test("Name"+i, (i%2==0)?"":"comment..."));
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private void initLinkBox(final int itemsPerPage, final int currentPageIndex) {
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  // assert currentPageIndex > 0;
  sorter.setRowFilter(new RowFilter<TableModel, Integer>() {
    @Override
    public boolean include(Entry<? extends TableModel, ? extends Integer> entry) {
      int ti = currentPageIndex - 1;
      int ei = entry.getIdentifier();
      return ti * itemsPerPage <= ei && ei < ti * itemsPerPage + itemsPerPage;
    }
  });
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  int startPageIndex = currentPageIndex - LR_PAGE_SIZE;
  if (startPageIndex <= 0) {
    startPageIndex = 1;
  }
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// #if 0 //BUG
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  // int maxPageIndex = (model.getRowCount() / itemsPerPage) + 1;
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// #else
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  /* "maxPageIndex" gives one blank page if the module of the division is not zero.
   *   pointed out by erServi
   * e.g. rowCount=100, maxPageIndex=100
   */
  int rowCount = model.getRowCount();
  int v = rowCount % itemsPerPage == 0 ? 0 : 1;
  int maxPageIndex = rowCount / itemsPerPage + v;
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// #endif
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  int endPageIndex = currentPageIndex + LR_PAGE_SIZE - 1;
  if (endPageIndex > maxPageIndex) {
    endPageIndex = maxPageIndex;
  }
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  box.removeAll();
  final ButtonGroup bg = new ButtonGroup();
  if (startPageIndex >= endPageIndex) {
    // if I only have one page, Y don't want to see pagination buttons
    // suggested by erServi
    return;
  }
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  ButtonGroup bg = new ButtonGroup();
  JRadioButton f = makePrevNextRadioButton(
      itemsPerPage, 1, "|<", currentPageIndex > 1);
  box.add(f);
  bg.add(f);
  JRadioButton p = makePrevNextRadioButton(
      itemsPerPage, currentPageIndex - 1, "<", currentPageIndex > 1);
  box.add(p);
  bg.add(p);
  box.add(Box.createHorizontalGlue());
  box.setBorder(BorderFactory.createEmptyBorder(0,0,5,0));
  int page = 0;
  for(int i=0;i<size;i+=step) {
    page++;
    final int index = i;
    final JRadioButton rb = new JRadioButton(""+page);
    final RowFilter<TestModel,Integer> filter = new RowFilter<TestModel,Integer>() {
      @Override
      public boolean include(Entry<? extends TestModel, ? extends Integer> entry) {
        int ei = entry.getIdentifier();
        return (index<=ei && ei<index+step);
      }
    };
    rb.setForeground(Color.BLUE);
    rb.setUI(ui);
    rb.setAction(new AbstractAction(""+page) {
      @Override
      public void actionPerformed(ActionEvent e) {
        sorter.setRowFilter(filter);
      }
    });
    box.add(rb);
    bg.add(rb);
    if(i==0) {
      rb.setSelected(true);
      sorter.setRowFilter(filter);
    }
  for (int i = startPageIndex; i <= endPageIndex; i++) {
    JRadioButton c = makeRadioButton(itemsPerPage, currentPageIndex, i);
    box.add(c);
    bg.add(c);
  }
  box.add(Box.createHorizontalGlue());
  JRadioButton n = makePrevNextRadioButton(
      itemsPerPage, currentPageIndex + 1, ">", currentPageIndex < maxPageIndex);
  box.add(n);
  bg.add(n);
  JRadioButton l = makePrevNextRadioButton(
      itemsPerPage, maxPageIndex, ">|", currentPageIndex < maxPageIndex);
  box.add(l);
  bg.add(l);
  box.revalidate();
  box.repaint();
}