    001    /* ===========================================================
    002     * JFreeChart : a free chart library for the Java(tm) platform
    003     * ===========================================================
    004     *
    005     * (C) Copyright 2000-2008, 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     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
    025     * in the United States and other countries.]
    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
    044    package org.jfree.chart.plot;
    045
    046    import org.jfree.chart.axis.ValueAxis;
    047    import 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     */
    053    public 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    }