    001    /* ===========================================================
    002     * JFreeChart : a free chart library for the Java(tm) platform
    003     * ===========================================================
    004     *
    005     * (C) Copyright 2000-2007, 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     * AxisCollection.java
    029     * -------------------
    030     * (C) Copyright 2003-2007, by Object Refinery Limited.
    031     *
    032     * Original Author:  David Gilbert (for Object Refinery Limited);
    033     * Contributor(s):   -;
    034     *
    035     * Changes
    036     * -------
    037     * 03-Nov-2003 : Added standard header (DG);
    038     *
    039     */
    040
    041    package org.jfree.chart.axis;
    042
    043    import java.util.List;
    044
    045    import org.jfree.ui.RectangleEdge;
    046
    047    /**
    048     * A collection of axes that have been assigned to the TOP, BOTTOM, LEFT or
    049     * RIGHT of a chart.  This class is used internally by JFreeChart, you won't
    050     * normally need to use it yourself.
    051     */
    052    public class AxisCollection {
    053
    054        /** The axes that need to be drawn at the top of the plot area. */
    055        private List axesAtTop;
    056
    057        /** The axes that need to be drawn at the bottom of the plot area. */
    058        private List axesAtBottom;
    059
    060        /** The axes that need to be drawn at the left of the plot area. */
    061        private List axesAtLeft;
    062
    063        /** The axes that need to be drawn at the right of the plot area. */
    064        private List axesAtRight;
    065
    066        /**
    067         * Creates a new empty collection.
    068         */
    069        public AxisCollection() {
    070            this.axesAtTop = new java.util.ArrayList();
    071            this.axesAtBottom = new java.util.ArrayList();
    072            this.axesAtLeft = new java.util.ArrayList();
    073            this.axesAtRight = new java.util.ArrayList();
    074        }
    075
    076        /**
    077         * Returns a list of the axes (if any) that need to be drawn at the top of
    078         * the plot area.
    079         *
    080         * @return A list of axes.
    081         */
    082        public List getAxesAtTop() {
    083            return this.axesAtTop;
    084        }
    085
    086       /**
    087        * Returns a list of the axes (if any) that need to be drawn at the bottom
    088        * of the plot area.
    089        *
    090        * @return A list of axes.
    091        */
    092       public List getAxesAtBottom() {
    093            return this.axesAtBottom;
    094        }
    095
    096        /**
    097         * Returns a list of the axes (if any) that need to be drawn at the left
    098         * of the plot area.
    099         *
    100         * @return A list of axes.
    101         */
    102        public List getAxesAtLeft() {
    103            return this.axesAtLeft;
    104        }
    105
    106        /**
    107        * Returns a list of the axes (if any) that need to be drawn at the right
    108        * of the plot area.
    109        *
    110        * @return A list of axes.
    111        */
    112        public List getAxesAtRight() {
    113            return this.axesAtRight;
    114        }
    115
    116        /**
    117         * Adds an axis to the collection.
    118         *
    119         * @param axis  the axis (<code>null</code> not permitted).
    120         * @param edge  the edge of the plot that the axis should be drawn on
    121         *              (<code>null</code> not permitted).
    122         */
    123        public void add(Axis axis, RectangleEdge edge) {
    124            if (axis == null) {
    125                throw new IllegalArgumentException("Null 'axis' argument.");
    126            }
    127            if (edge == null) {
    128                throw new IllegalArgumentException("Null 'edge' argument.");
    129            }
    130            if (edge == RectangleEdge.TOP) {
    131                this.axesAtTop.add(axis);
    132            }
    133            else if (edge == RectangleEdge.BOTTOM) {
    134                this.axesAtBottom.add(axis);
    135            }
    136            else if (edge == RectangleEdge.LEFT) {
    137                this.axesAtLeft.add(axis);
    138            }
    139            else if (edge == RectangleEdge.RIGHT) {
    140                this.axesAtRight.add(axis);
    141            }
    142        }
    143
    144    }