Swing/DefaultEditorKit のバックアップの現在との差分(No.6)

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// textField.setComponentPopupMenu(new TextFieldPopupMenu());
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class TextFieldPopupMenu extends JPopupMenu {
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  private final Action cutAction = new DefaultEditorKit.CutAction();
  private final Action copyAction = new DefaultEditorKit.CopyAction();
  private final Action pasteAction = new DefaultEditorKit.PasteAction();
  private final Action deleteAction = new AbstractAction("delete") {
    @Override public void actionPerformed(ActionEvent e) {
      Component c = getInvoker();
      if (c instanceof JTextComponent) {
        ((JTextComponent) c).replaceSelection(null);
      }
    }
  };
  private final Action cut2Action = new AbstractAction("cut2") {
    @Override public void actionPerformed(ActionEvent e) {
      Component c = getInvoker();
      if (c instanceof JTextComponent) {
        ((JTextComponent) c).cut();
      }
    }
  };

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  protected TextFieldPopupMenu() {
    super();
    add(cutAction);
    add(copyAction);
    add(pasteAction);
    add(deleteAction);
    addSeparator();
    add(cut2Action);
  }

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**サンプルコード [#mcf85a7d]
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 private void showPop(final JTextField field, final MouseEvent me) {
   JPopupMenu pop = new JPopupMenu();
   boolean isSelected = (field.getSelectedText()==null)?false:true;
   Action action = new DefaultEditorKit.CutAction();
   action.putValue(Action.NAME, "切り取り");
   action.setEnabled(isSelected);
   pop.add(action);
   action = new DefaultEditorKit.CopyAction();
   action.putValue(Action.NAME, "コピー");
   action.setEnabled(isSelected);
   pop.add(action);
   action = new DefaultEditorKit.PasteAction();
   action.putValue(Action.NAME, "貼り付け");
   pop.add(action);
   action = new AbstractAction("削除") {
     public void actionPerformed(ActionEvent ae) {
       field.replaceSelection(null);
     }
   };
   action.setEnabled(isSelected);
   pop.add(action);
   pop.addSeparator();
   action = new AbstractAction("切り取り2") {
     public void actionPerformed(ActionEvent ae) {
       field.cut();
     }
   };
   action.setEnabled(isSelected);
   pop.add(action);
   pop.show(field, me.getX(), me.getY());
 }
  @Override public void show(Component c, int x, int y) {
    if (c instanceof JTextComponent) {
      JTextComponent tc = (JTextComponent) c;
      boolean f =  tc.getSelectionStart() != tc.getSelectionEnd();
      cutAction.setEnabled(f);
      copyAction.setEnabled(f);
      deleteAction.setEnabled(f);
      cut2Action.setEnabled(f);
      super.show(c, x, y);
    }
  }
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}
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