/* * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package components;import javax.swing.Icon;import javax.swing.JTree;import javax.swing.tree.DefaultTreeCellRenderer;import javax.swing.tree.TreePath;import javax.swing.tree.TreeSelectionModel;public class GenealogyTree extends JTree {    GenealogyModel model;    public GenealogyTree(Person graphNode) {        super(new GenealogyModel(graphNode));        getSelectionModel().setSelectionMode(                TreeSelectionModel.SINGLE_TREE_SELECTION);        DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();        Icon personIcon = null;        renderer.setLeafIcon(personIcon);        renderer.setClosedIcon(personIcon);        renderer.setOpenIcon(personIcon);        setCellRenderer(renderer);    }        /**     * Get the selected item in the tree, and call showAncestor with this     * item on the model.     */    public void showAncestor(boolean b) {        Object newRoot = null;        TreePath path = getSelectionModel().getSelectionPath();        if (path != null) {            newRoot = path.getLastPathComponent();        }        ((GenealogyModel)getModel()).showAncestor(b, newRoot);    }}