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/*
 * #%L
 * JAXX :: Runtime
 * 
 * $Id: NavDataProvider.java 2118 2010-10-26 17:44:57Z tchemit $
 * $HeadURL: http://svn.nuiton.org/svn/jaxx/tags/jaxx-2.3/jaxx-runtime/src/main/java/jaxx/runtime/swing/nav/NavDataProvider.java $
 * %%
 * Copyright (C) 2008 - 2010 CodeLutin
 * %%
 * This program 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 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public 
 * License along with this program.  If not, see
 * .
 * #L%
 */
package jaxx.runtime.swing.nav;

import jaxx.runtime.swing.nav.tree.AbstractNavTreeCellRenderer;

/**
 * Contract of provider of data.
 * 
 * This object is used by {@link NavNodeChildLoador} to populate childs of node
 * and by {@link AbstractNavTreeCellRenderer} to render nodes.
 *
 * @author tchemit 
 * @since 2.1
 */
public interface NavDataProvider {

    /**
     * @return {@code true} is provider is enabled and can provide datas,
     *         {@code false} otherwise.
     */
    boolean isEnabled();

}