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jfreechart example source code file (RendererState.java)

This example jfreechart source code file (RendererState.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

chartrenderinginfo, chartrenderinginfo, entitycollection, entitycollection, plotrenderinginfo, plotrenderinginfo, rendererstate, rendererstate

The jfreechart RendererState.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library 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 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------------
 * RendererState.java
 * ------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 07-Oct-2003 : Version 1 (DG);
 * 09-Jun-2005 : Added a convenience method to access the entity
 *               collection (DG);
 *
 */

package org.jfree.chart.renderer;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.plot.PlotRenderingInfo;

/**
 * Represents the current state of a renderer.
 */
public class RendererState {

    /** The plot rendering info. */
    private PlotRenderingInfo info;

    /**
     * Creates a new state object.
     *
     * @param info  the plot rendering info.
     */
    public RendererState(PlotRenderingInfo info) {
        this.info = info;
    }

    /**
     * Returns the plot rendering info.
     *
     * @return The info.
     */
    public PlotRenderingInfo getInfo() {
        return this.info;
    }

    /**
     * A convenience method that returns a reference to the entity
     * collection (may be <code>null) being used to record
     * chart entities.
     *
     * @return The entity collection (possibly <code>null).
     */
    public EntityCollection getEntityCollection() {
        EntityCollection result = null;
        if (this.info != null) {
            ChartRenderingInfo owner = this.info.getOwner();
            if (owner != null) {
                result = owner.getEntityCollection();
            }
        }
        return result;
    }

}

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