xyseriescollection.java

java图形利器

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2007, 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.]
 *
 * -----------------------
 * XYSeriesCollection.java
 * -----------------------
 * (C) Copyright 2001-2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Aaron Metzger;
 *
 * $Id: XYSeriesCollection.java,v 1.12.2.6 2007/05/08 10:58:50 mungady Exp $
 *
 * Changes
 * -------
 * 15-Nov-2001 : Version 1 (DG);
 * 03-Apr-2002 : Added change listener code (DG);
 * 29-Apr-2002 : Added removeSeries, removeAllSeries methods (ARM);
 * 07-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 26-Mar-2003 : Implemented Serializable (DG);
 * 04-Aug-2003 : Added getSeries() method (DG);
 * 31-Mar-2004 : Modified to use an XYIntervalDelegate.
 * 05-May-2004 : Now extends AbstractIntervalXYDataset (DG);
 * 18-Aug-2004 : Moved from org.jfree.data --> org.jfree.data.xy (DG);
 * 17-Nov-2004 : Updated for changes to DomainInfo interface (DG);
 * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
 * 28-Mar-2005 : Fixed bug in getSeries(int) method (1170825) (DG);
 * 05-Oct-2005 : Made the interval delegate a dataset listener (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 27-Nov-2006 : Added clone() override (DG);
 * 08-May-2007 : Added indexOf(XYSeries) method (DG);
 *
 */

package org.jfree.data.xy;

import java.io.Serializable;
import java.util.Collections;
import java.util.List;

import org.jfree.data.DomainInfo;
import org.jfree.data.Range;
import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.util.ObjectUtilities;

/**
 * Represents a collection of {@link XYSeries} objects that can be used as a 
 * dataset.
 */
public class XYSeriesCollection extends AbstractIntervalXYDataset
                                implements IntervalXYDataset, DomainInfo, 
                                           Serializable {

    /** For serialization. */
    private static final long serialVersionUID = -7590013825931496766L;
    
    /** The series that are included in the collection. */
    private List data;
    
    /** The interval delegate (used to calculate the start and end x-values). */
    private IntervalXYDelegate intervalDelegate;
    
    /**
     * Constructs an empty dataset.
     */
    public XYSeriesCollection() {
        this(null);
    }

    /**
     * Constructs a dataset and populates it with a single series.
     *
     * @param series  the series (<code>null</code> ignored).
     */
    public XYSeriesCollection(XYSeries series) {
        this.data = new java.util.ArrayList();
        this.intervalDelegate = new IntervalXYDelegate(this, false);
        addChangeListener(this.intervalDelegate);
        if (series != null) {
            this.data.add(series);
            series.addChangeListener(this);
        }
    }
    
    /**
     * Adds a series to the collection and sends a {@link DatasetChangeEvent} 
     * to all registered listeners.
     *
     * @param series  the series (<code>null</code> not permitted).
     */
    public void addSeries(XYSeries series) {

        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        this.data.add(series);
        series.addChangeListener(this);
        fireDatasetChanged();

    }

    /**
     * Removes a series from the collection and sends a 
     * {@link DatasetChangeEvent} to all registered listeners.
     *
     * @param series  the series index (zero-based).
     */
    public void removeSeries(int series) {

        if ((series < 0) || (series >= getSeriesCount())) {
            throw new IllegalArgumentException("Series index out of bounds.");
        }

        // fetch the series, remove the change listener, then remove the series.
        XYSeries ts = (XYSeries) this.data.get(series);
        ts.removeChangeListener(this);
        this.data.remove(series);
        fireDatasetChanged();

    }

    /**
     * Removes a series from the collection and sends a 
     * {@link DatasetChangeEvent} to all registered listeners.
     *
     * @param series  the series (<code>null</code> not permitted).
     */
    public void removeSeries(XYSeries series) {

        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        if (this.data.contains(series)) {
            series.removeChangeListener(this);
            this.data.remove(series);
            fireDatasetChanged();
        }

    }
    
    /**
     * Removes all the series from the collection and sends a 
     * {@link DatasetChangeEvent} to all registered listeners.
     */
    public void removeAllSeries() {
        // Unregister the collection as a change listener to each series in 
        // the collection.
        for (int i = 0; i < this.data.size(); i++) {
          XYSeries series = (XYSeries) this.data.get(i);
          series.removeChangeListener(this);
        }

        // Remove all the series from the collection and notify listeners.
        this.data.clear();
        fireDatasetChanged();
    }

    /**
     * Returns the number of series in the collection.
     *
     * @return The series count.
     */
    public int getSeriesCount() {
        return this.data.size();
    }

    /**
     * Returns a list of all the series in the collection.  
     * 
     * @return The list (which is unmodifiable).
     */
    public List getSeries() {
        return Collections.unmodifiableList(this.data);
    }
    
    /**
     * Returns the index of the specified series, or -1 if that series is not
     * present in the dataset.
     * 
     * @param series  the series (<code>null</code> not permitted).
     * 
     * @return The series index.
     * 
     * @since 1.0.6
     */
    public int indexOf(XYSeries series) {
        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        return this.data.indexOf(series);
    }

    /**
     * Returns a series from the collection.
     *
     * @param series  the series index (zero-based).
     *
     * @return The series.
     * 
     * @throws IllegalArgumentException if <code>series</code> is not in the
     *     range <code>0</code> to <code>getSeriesCount() - 1</code>.
     */
    public XYSeries getSeries(int series) {
        if ((series < 0) || (series >= getSeriesCount())) {
            throw new IllegalArgumentException("Series index out of bounds");
        }
        return (XYSeries) this.data.get(series);
    }

    /**
     * Returns the key for a series.
     *
     * @param series  the series index (in the range <code>0</code> to 
     *     <code>getSeriesCount() - 1</code>).
     *
     * @return The key for a series.
     * 
     * @throws IllegalArgumentException if <code>series</code> is not in the
     *     specified range.
     */
    public Comparable getSeriesKey(int series) {
        // defer argument checking
        return getSeries(series).getKey();
    }

    /**
     * Returns the number of items in the specified series.
     *