TITLE:JTableのセルエディタにJPopumMenuを設定
#navi(../)
#tags(JTable, TableCellEditor, UndoManager, JPopumMenu, AncestorListener)
RIGHT:Posted by &author(aterai); at 2010-04-26
*JTableのセルエディタにJPopumMenuを設定 [#be1eecdb]
``JTable``のセルエディタに、``Copy``、``Paste``、``Undo``、``Redo``などを行う``JPopumMenu``を設定します。
-&jnlp;
-&jar;
-&zip;
//#screenshot
#ref(http://lh4.ggpht.com/_9Z4BYR88imo/TQTIn7Rc6TI/AAAAAAAAATE/drRaDYiUB1w/s800/CellEditorPopupMenu.png)
**サンプルコード [#nb35d2a6]
#code(link){{
public static JPopupMenu installTextComponentPopupMenu(final JTextComponent tc) {
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, Event.CTRL_MASK), "undo");
imap.put(KeyStroke.getKeyStroke(KeyEvent.VK_Y, Event.CTRL_MASK), "redo");
JPopupMenu popup = new JPopupMenu();
popup.add(cutAction);
popup.add(copyAction);
popup.add(pasteAction);
popup.add(deleteAction);
popup.addSeparator();
popup.add(undoAction);
popup.add(redoAction);
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;
}
}}
**解説 [#occ20915]
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``JPopumMenu``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。
//**参考リンク
**コメント [#we846b54]
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