Swing/TreeNodeFilter のバックアップ(No.5)

tree.setCellRenderer(new DefaultTreeCellRenderer() {
  private final JLabel emptyLabel = new JLabel();
  @Override public Component getTreeCellRendererComponent(
        JTree tree, Object value, boolean selected, boolean expanded, boolean leaf,
        int row, boolean hasFocus) {
    Component c = super.getTreeCellRendererComponent(
        tree, value, selected, expanded, leaf, row, hasFocus);
    DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
    FilterableNode uo = (FilterableNode) node.getUserObject();
    return uo.status ? c : emptyLabel;
  }
});
fireDocumentChangeEvent();
// ...
private void fireDocumentChangeEvent() {
  String q = field.getText();
  TreePath rtp = tree.getPathForRow(0);
  if (q.isEmpty()) {
    resetAll(tree, rtp, true);
    ((DefaultTreeModel) tree.getModel()).reload();
    // visitAll(tree, rtp, true);
  } else {
    visitAll(tree, rtp, false);
    searchTree(tree, rtp, q);
  }
}