Swing/ScrollingCellEditor のバックアップ(No.7)

class TextAreaCellEditor extends JTextArea implements TableCellEditor {
  private final JScrollPane scroll;
  public TextAreaCellEditor() {
    scroll = new JScrollPane(this);
    setLineWrap(true);
    KeyStroke enter = KeyStroke.getKeyStroke(
        KeyEvent.VK_ENTER, InputEvent.CTRL_MASK);
    getInputMap(JComponent.WHEN_FOCUSED).put(enter, new AbstractAction() {
      @Override public void actionPerformed(ActionEvent e) {
        stopCellEditing();
      }
    });
  }
  @Override public Object getCellEditorValue() {
    return getText();
  }
  @Override public Component getTableCellEditorComponent(
      JTable table, Object value, boolean isSelected, int row, int column) {
    setFont(table.getFont());
    setText(Objects.toString(value, ""));
    EventQueue.invokeLater(new Runnable() {
      @Override public void run() {
        setCaretPosition(getText().length());
        requestFocusInWindow();
      }
    });
    return scroll;
  }
  @Override public boolean isCellEditable(final EventObject e) {
    if (e instanceof MouseEvent) {
      return ((MouseEvent) e).getClickCount() >= 2;
    }
    EventQueue.invokeLater(new Runnable() {
      @Override public void run() {
        if (e instanceof KeyEvent) {
          KeyEvent ke = (KeyEvent) e;
          char kc = ke.getKeyChar();
          if (Character.isUnicodeIdentifierStart(kc)) {
            setText(getText() + kc);
          }
        }
      }
    });
    return true;
  }
//...