/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
****************************************************************/
package org.apache.cayenne.modeler.undo;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JComboBox;
import javax.swing.undo.UndoManager;
import org.apache.cayenne.modeler.Application;
public class JComboBoxUndoListener implements ItemListener {
private Object deselectedItem;
public void itemStateChanged(ItemEvent e) {
int stateChange = e.getStateChange();
switch (stateChange) {
case ItemEvent.DESELECTED:
deselectedItem = e.getItem();
break;
case ItemEvent.SELECTED:
UndoManager undoManager = Application.getInstance().getUndoManager();
undoManager.addEdit(new JComboBoxUndoableEdit(
(JComboBox) e.getSource(),
deselectedItem,
e.getItem(),
this));
break;
}
}
}