ComboBoxCellEditorコンポーネントを持つSwingXを使用することを強くお勧めします。これは基本的に、Swingコンポーネントが持つべき機能のためのSunのインキュベーターです。プロジェクトがまだ活発に開発されているかどうかはわかりませんが、成熟しており、多くのプロジェクトで使用しています。
何らかの理由で外部ライブラリを使用できない、または使用したくない場合は、次のコード(カスタムSwingX機能を削除するためにパーツが変更されています)、コメントはそのままです。
注:ライブラリはGPL化されたコードです。
/*
* $Id: ComboBoxCellEditor.java 3738 2010-07-27 13:56:28Z bierhance $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
import java.awt.event.ActionEvent;
import java.awt.event.MouseEvent;
import java.util.EventObject;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
/**
* <p>
* This is a cell editor that can be used when a combo box (that has been set up for automatic completion) is to be used in a JTable. The
* {@link javax.swing.DefaultCellEditor DefaultCellEditor} won't work in this case, because each time an item gets selected it stops cell
* editing and hides the combo box.
* </p>
* <p>
* Usage example:
* </p>
* <p>
*
* <pre>
* <code>
* JTable table = ...;
* JComboBox comboBox = ...;
* ...
* TableColumn column = table.getColumnModel().getColumn(0);
* column.setCellEditor(new ComboBoxCellEditor(comboBox));
* </code>
* </pre>
*
* </p>
*/
public class ComboBoxCellEditor extends DefaultCellEditor {
/**
* Creates a new ComboBoxCellEditor.
*
* @param comboBox the comboBox that should be used as the cell editor.
*/
public ComboBoxCellEditor(final JComboBox comboBox) {
super(comboBox);
comboBox.removeActionListener(this.delegate);
this.delegate = new EditorDelegate() {
@Override
public void setValue(final Object value) {
comboBox.setSelectedItem(value);
}
@Override
public Object getCellEditorValue() {
return comboBox.getSelectedItem();
}
@Override
public boolean shouldSelectCell(final EventObject anEvent) {
if (anEvent instanceof MouseEvent) {
final MouseEvent e = (MouseEvent) anEvent;
return e.getID() != MouseEvent.MOUSE_DRAGGED;
}
return true;
}
@Override
public boolean stopCellEditing() {
if (comboBox.isEditable()) {
// Commit edited value.
comboBox.actionPerformed(new ActionEvent(ComboBoxCellEditor.this, 0, ""));
}
return super.stopCellEditing();
}
@Override
public void actionPerformed(final ActionEvent e) {
ComboBoxCellEditor.this.stopCellEditing();
}
};
comboBox.addActionListener(this.delegate);
}
}