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/* ===========================================================
 * Orson Charts : a 3D chart library for the Java(tm) platform
 * ===========================================================
 * 
 * (C)opyright 2013-2022, by David Gilbert.  All rights reserved.
 * 
 * https://github.com/jfree/orson-charts
 * 
 * This program 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.
 *
 * 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 Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 * 
 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
 * Other names may be trademarks of their respective owners.]
 * 
 * If you do not wish to be bound by the terms of the GPL, an alternative
 * commercial license can be purchased.  For details, please see visit the
 * Orson Charts home page:
 * 
 * http://www.object-refinery.com/orsoncharts/index.html
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 */

package org.jfree.chart3d.interaction;

import org.jfree.chart3d.data.xyz.XYZDataset;
import org.jfree.chart3d.data.xyz.XYZItemKey;

/**
 * An object representing a selection of items from an {@link XYZDataset}.
 */
public interface XYZDataItemSelection> {
   
    /**
     * Returns {@code true} if the specified item is present in the 
     * selection, and {@code false} otherwise.
     * 
     * @param item  the item key ({@code null} not permitted).
     * 
     * @return A boolean. 
     */
    boolean isSelected(XYZItemKey item);

}