Swing/RenameIfCanWriteFileChooser のバックアップ(No.3)

class CanWriteFileChooserUI extends MetalFileChooserUI{
  protected CanWriteFileChooserUI(JFileChooser chooser) {
    super(chooser);
  }
  public static ComponentUI createUI(JComponent c) {
    return new CanWriteFileChooserUI((JFileChooser)c);
  }
  private BasicDirectoryModel model2 = null;
  @Override public void createModel() {
    if(model2!=null) {
      model2.invalidateFileCache();
    }
    model2 = new BasicDirectoryModel(getFileChooser()) {
      @Override public boolean renameFile(File oldFile, File newFile) {
        return oldFile.canWrite()?super.renameFile(oldFile, newFile):false;
      }
    };
  }
  @Override public BasicDirectoryModel getModel() {
    return model2;
  }
}