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 * DateTick.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 * 07-Nov-2003 : Version 1 (DG);
038 * 13-May-2004 : Added equals() method (DG);
039 *
040 */
041
042package org.jfree.chart.axis;
043
044import java.util.Date;
045
046import org.jfree.ui.TextAnchor;
047import org.jfree.util.ObjectUtilities;
048
049/**
050 * A tick used by the {@link DateAxis} class.
051 */
052public class DateTick extends ValueTick {
053
054    /** The date. */
055    private Date date;
056    
057    /**
058     * Creates a new date tick.
059     * 
060     * @param date  the date.
061     * @param label  the label.
062     * @param textAnchor  the part of the label that is aligned to the anchor 
063     *                    point.
064     * @param rotationAnchor  defines the rotation point relative to the text.
065     * @param angle  the rotation angle (in radians).
066     */
067    public DateTick(Date date, String label,
068                    TextAnchor textAnchor, TextAnchor rotationAnchor, 
069                    double angle) {
070                        
071        super(date.getTime(), label, textAnchor, rotationAnchor, angle);
072        this.date = date;
073            
074    }
075    
076    /**
077     * Returns the date.
078     * 
079     * @return The date.
080     */
081    public Date getDate() {
082        return this.date;
083    }
084
085    /**
086     * Tests this tick for equality with an arbitrary object.
087     * 
088     * @param obj  the object to test (<code>null</code> permitted).
089     * 
090     * @return A boolean.
091     */
092    public boolean equals(Object obj) {
093        if (obj == this) {
094            return true;   
095        }
096        if (obj instanceof DateTick && super.equals(obj)) {
097            DateTick dt = (DateTick) obj;
098            if (!ObjectUtilities.equal(this.date, dt.date)) {
099                return false;   
100            }
101            return true;
102        }
103        return false;
104    }
105    
106    /**
107     * Returns a hash code for this object.
108     * 
109     * @return A hash code.
110     */
111    public int hashCode() {
112        return this.date.hashCode();
113    }
114    
115}