Swing/CellEditorPopupMenu のバックアップの現在との差分(No.11)

  • category: swing folder: CellEditorPopupMenu title: JTableのセルエディタにJPopupMenuを設定 tags: [JTable, TableCellEditor, UndoManager, JPopupMenu, AncestorListener] author: aterai pubdate: 2010-04-26T16:54:26+09:00 description: JTableのセルエディタに、Copy、Paste、Undo、Redoなどを行うJPopupMenuを設定します。 image: https://lh4.googleusercontent.com/_9Z4BYR88imo/TQTIn7Rc6TI/AAAAAAAAATE/drRaDYiUB1w/s800/CellEditorPopupMenu.png hreflang: 
       href: https://java-swing-tips.blogspot.com/2010/11/jtable-celleditor-popupmenu.html
   lang: en

概要

概要

JTableのセルエディタに、Copy、Paste、Undo、Redoなどを行うJPopupMenuを設定します。

Screenshot

screenshot

Download

サンプルコード

サンプルコード

 
#spandel
public static JPopupMenu installTextComponentPopupMenu(final JTextComponent tc) {
#spanend
  final UndoManager manager = new UndoManager();
  final Action undoAction   = new UndoAction(manager);
  final Action redoAction   = new RedoAction(manager);
  final Action cutAction    = new DefaultEditorKit.CutAction();
  final Action copyAction   = new DefaultEditorKit.CopyAction();
  final Action pasteAction  = new DefaultEditorKit.PasteAction();
  final Action deleteAction = new AbstractAction("delete") {
    @Override public void actionPerformed(ActionEvent e) {
      JPopupMenu pop = (JPopupMenu) e.getSource();
      ((JTextComponent) pop.getInvoker()).replaceSelection(null);
    }
  };
  tc.addAncestorListener(new AncestorListener() {
    @Override public void ancestorAdded(AncestorEvent e) {
      manager.discardAllEdits();
      tc.requestFocusInWindow();
    }
    @Override public void ancestorMoved(AncestorEvent e) {}
    @Override public void ancestorRemoved(AncestorEvent e) {}
  });
  tc.getDocument().addUndoableEditListener(manager);
  tc.getActionMap().put("undo", undoAction);
  tc.getActionMap().put("redo", redoAction);
  InputMap imap = tc.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
  imap.put(KeyStroke.getKeyStroke(KeyEvent.VK_Z, InputEvent.CTRL_DOWN_MASK), "undo");
  imap.put(KeyStroke.getKeyStroke(KeyEvent.VK_Y, InputEvent.CTRL_DOWN_MASK), "redo");
#spanadd
class TextComponentPopupMenu extends JPopupMenu {
#spanend
  protected TextComponentPopupMenu(JTextComponent tc) {
    super();
    Action cutAction = new DefaultEditorKit.CutAction();
    add(cutAction);
    Action copyAction = new DefaultEditorKit.CopyAction();
    add(copyAction);
    Action pasteAction = new DefaultEditorKit.PasteAction();
    add(pasteAction);
    Action deleteAction = new DeleteAction();
    add(deleteAction);
    addSeparator();

  JPopupMenu popup = new JPopupMenu();
  popup.add(cutAction);
  popup.add(copyAction);
  popup.add(pasteAction);
  popup.add(deleteAction);
  popup.addSeparator();
  popup.add(undoAction);
  popup.add(redoAction);
    UndoManager manager = new UndoManager();
    Action undoAction = new UndoAction(manager);
    add(undoAction);

  popup.addPopupMenuListener(new PopupMenuListener() {
    @Override public void popupMenuCanceled(PopupMenuEvent e) {}
    @Override public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
      undoAction.setEnabled(true);
      redoAction.setEnabled(true);
    }
    @Override public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
      JPopupMenu pop = (JPopupMenu) e.getSource();
      JTextField field = (JTextField) pop.getInvoker();
      boolean flg = field.getSelectedText() != null;
      cutAction.setEnabled(flg);
      copyAction.setEnabled(flg);
      deleteAction.setEnabled(flg);
      undoAction.setEnabled(manager.canUndo());
      redoAction.setEnabled(manager.canRedo());
    }
  });
  tc.setComponentPopupMenu(popup);
  return popup;
    Action redoAction = new RedoAction(manager);
    add(redoAction);
#spanadd

#spanend
    tc.addAncestorListener(new AncestorListener() {
      @Override public void ancestorAdded(AncestorEvent e) {
        manager.discardAllEdits();
        e.getComponent().requestFocusInWindow();
      }
#spanadd

#spanend
      @Override public void ancestorMoved(AncestorEvent e) {
        /* not needed */
      }
#spanadd

#spanend
      @Override public void ancestorRemoved(AncestorEvent e) {
        /* not needed */
      }
    });
    tc.getDocument().addUndoableEditListener(manager);
    tc.getActionMap().put("undo", undoAction);
    tc.getActionMap().put("redo", redoAction);
    InputMap im = tc.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
    int mask = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
    // Java 10: int mask = Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx();
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_Z, mask), "undo");
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_Y, mask), "redo");
#spanadd

#spanend
    addPopupMenuListener(new PopupMenuListener() {
      @Override public void popupMenuCanceled(PopupMenuEvent e) {
        /* not needed */
      }
#spanadd

#spanend
      @Override public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
        undoAction.setEnabled(true);
        redoAction.setEnabled(true);
      }
#spanadd

#spanend
      @Override public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
        JTextComponent tc = (JTextComponent) getInvoker();
        boolean hasSelectedText = Objects.nonNull(tc.getSelectedText());
        cutAction.setEnabled(hasSelectedText);
        copyAction.setEnabled(hasSelectedText);
        deleteAction.setEnabled(hasSelectedText);
        undoAction.setEnabled(manager.canUndo());
        redoAction.setEnabled(manager.canRedo());
      }
    });
  }
}
View in GitHub: Java, Kotlin

解説

 上記のサンプルでは、JTableのセルエディタに、Cut、Copy、Paste、Delete、Undo、Redoを行うJPopupMenuを設定しています。

解説

 上記のサンプルでは、JTableのセルエディタ内の文字列に対して、Cut、Copy、Paste、Delete、Undo、Redoを行うためのJPopupMenuを設定しています。
セルエディタとして使用しているJTextFieldは、おなじものを使い回しているので、別のセルでの編集が持ち越されないよう、AncestorListenerを使って表示されるたびに、UndoManagerを空(UndoManager#discardAllEdits()を呼び出す)にしています。
  • セルエディタとして使用するJTextFieldは、同一インスタンス使い回しているため、別セルでの編集が持ち越されないようAncestorListenerを使って表示されるたびにUndoManager#discardAllEdits()を呼び出してリセット
    • もしくはDefaultCellEditor#isCellEditable(...)などをオーバーライドしてリセット
もしくは、DefaultCellEditor#isCellEditable(...)などをオーバーライドしてリセットする方法もあります。 
DefaultCellEditor ce = new DefaultCellEditor(new JTextField()) {
  @Override public boolean isCellEditable(EventObject e) {
    boolean b = super.isCellEditable(e);
    if (b) {
      manager.discardAllEdits();
    }
    return b;
  }
};
table.setDefaultEditor(Object.class, ce);

参考リンク

参考リンク

コメント

コメント