    001/* ===========================================================
    002 * JFreeChart : a free chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.
    006 *
    007 * Project Info:  http://www.jfree.org/jfreechart/index.html
    008 *
    009 * This library is free software; you can redistribute it and/or modify it
    010 * under the terms of the GNU Lesser General Public License as published by
    011 * the Free Software Foundation; either version 2.1 of the License, or
    012 * (at your option) any later version.
    013 *
    014 * This library is distributed in the hope that it will be useful, but
    015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017 * License for more details.
    018 *
    019 * You should have received a copy of the GNU Lesser General Public
    020 * License along with this library; if not, write to the Free Software
    021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022 * USA.
    023 *
    024 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025 * Other names may be trademarks of their respective owners.]
    026 *
    027 * ------------------
    028 * ValueAxisPlot.java
    029 * ------------------
    030 *
    031 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
    032 *
    033 * Original Author:  David Gilbert (for Object Refinery Limited);
    034 * Contributor(s):   -;
    035 *
    036 * Changes
    037 * -------
    038 * 07-May-2003 : Version 1 (DG);
    039 * 11-Nov-2004 : Changed Horizontal --> Domain and Vertical --> Range (DG);
    040 * 12-Nov-2004 : Moved zooming methods to new Zoomable interface (DG);
    041 *
    042 */
    043
    044package org.jfree.chart.plot;
    045
    046import org.jfree.chart.axis.ValueAxis;
    047import org.jfree.data.Range;
    048
    049/**
    050 * An interface that is implemented by plots that use a {@link ValueAxis},
    051 * providing a standard method to find the current data range.
    052 */
    053public interface ValueAxisPlot {
    054
    055    /**
    056     * Returns the data range that should apply for the specified axis.
    057     *
    058     * @param axis  the axis.
    059     *
    060     * @return The data range.
    061     */
    062    public Range getDataRange(ValueAxis axis);
    063
    064}