001    /*
002     * Copyright 2002-2006 the original author or authors.
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005     * use this file except in compliance with the License. You may obtain a copy
006     * of the License at
007     * 
008     * http://www.apache.org/licenses/LICENSE-2.0
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013     * License for the specific language governing permissions and limitations
014     * under the License.
015     */
016    package org.springframework.richclient.list;
017    
018    import javax.swing.ComboBoxModel;
019    import javax.swing.ListModel;
020    
021    /**
022     * Simple adapter to create a {@link ComboBoxModel} from an existing {@link ListModel}
023     * 
024     * @author Mathias Broekelmann
025     */
026    public class ComboBoxListModelAdapter extends AbstractFilteredListModel implements ComboBoxModel {
027    
028        private Object selectedItem;
029    
030        /**
031         * Constructs a new instance with a given listModel
032         * 
033         * @param listModel
034         *            the listmodel containing the elements
035         * 
036         * @throws IllegalArgumentException
037         *             if listModel is null
038         */
039        public ComboBoxListModelAdapter(ListModel listModel) {
040            super(listModel);
041        }
042        
043        public Object getSelectedItem() {
044            return selectedItem;
045        }
046    
047        public void setSelectedItem(Object anItem) {
048            this.selectedItem = anItem;
049            fireContentsChanged(this, -1, -1);
050        }
051    
052    }