TreeLaFRenderer.java

/**
 * OrbisGIS is a java GIS application dedicated to research in GIScience.
 * OrbisGIS is developed by the GIS group of the DECIDE team of the 
 * Lab-STICC CNRS laboratory, see <http://www.lab-sticc.fr/>.
 *
 * The GIS group of the DECIDE team is located at :
 *
 * Laboratoire Lab-STICC – CNRS UMR 6285
 * Equipe DECIDE
 * UNIVERSITÉ DE BRETAGNE-SUD
 * Institut Universitaire de Technologie de Vannes
 * 8, Rue Montaigne - BP 561 56017 Vannes Cedex
 * 
 * OrbisGIS is distributed under GPL 3 license.
 *
 * Copyright (C) 2007-2014 CNRS (IRSTV FR CNRS 2488)
 * Copyright (C) 2015-2017 CNRS (Lab-STICC UMR CNRS 6285)
 *
 * This file is part of OrbisGIS.
 *
 * OrbisGIS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * OrbisGIS 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * OrbisGIS. If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, please consult: <http://www.orbisgis.org/>
 * or contact directly:
 * info_at_ orbisgis.org
 */
package org.orbisgis.sif.components.renderers;

import java.beans.EventHandler;
import java.beans.PropertyChangeListener;
import javax.swing.JTree;
import javax.swing.tree.TreeCellRenderer;

/**
 * Builds a {@link TreeCellRenderer} using the default one for the current
 * Look&Feel.
 * @author Alexis Guéganno
 */
public abstract class TreeLaFRenderer implements TreeCellRenderer {

        protected TreeCellRenderer lookAndFeelRenderer;

        /**
         * Update the native renderer.
         * Warning, Used only by PropertyChangeListener on UI property
         */
        public void updateLFRenderer() {
                lookAndFeelRenderer = new JTree().getCellRenderer();
        }

        /**
         * Builds a new {@code TreeLaFRenderer} associated to the given {@link 
         * Jtree}. The constructor also sets a listener to L&F events.
         * @param tree Where the listener has to be installed
         */
        public TreeLaFRenderer(JTree tree) {
                initialize(tree);
        }

        private void initialize(JTree tree) {
                updateLFRenderer();
                tree.addPropertyChangeListener("UI",
                        EventHandler.create(PropertyChangeListener.class,this,"updateLFRenderer"));
        }

}