/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------------
* DateTickUnitType.java
* ---------------------
* (C) Copyright 2009, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 09-Jan-2009 : Version 1 (DG);
*
*/
package org.jfree.chart.axis;
import java.io.ObjectStreamException;
import java.io.Serializable;
import java.util.Calendar;
/**
* An enumeration of the unit types for a {@link DateTickUnit} instance.
*
* @since 1.0.13
*/
public class DateTickUnitType implements Serializable {
/** Year. */
public static final DateTickUnitType YEAR
= new DateTickUnitType("DateTickUnitType.YEAR", Calendar.YEAR);
/** Month. */
public static final DateTickUnitType MONTH
= new DateTickUnitType("DateTickUnitType.MONTH", Calendar.MONTH);
/** Day. */
public static final DateTickUnitType DAY
= new DateTickUnitType("DateTickUnitType.DAY", Calendar.DATE);
/** Hour. */
public static final DateTickUnitType HOUR
= new DateTickUnitType("DateTickUnitType.HOUR",
Calendar.HOUR_OF_DAY);
/** Minute. */
public static final DateTickUnitType MINUTE
= new DateTickUnitType("DateTickUnitType.MINUTE", Calendar.MINUTE);
/** Second. */
public static final DateTickUnitType SECOND
= new DateTickUnitType("DateTickUnitType.SECOND", Calendar.SECOND);
/** Millisecond. */
public static final DateTickUnitType MILLISECOND
= new DateTickUnitType("DateTickUnitType.MILLISECOND",
Calendar.MILLISECOND);
/** The name. */
private String name;
/** The corresponding field value in Java's Calendar class. */
private int calendarField;
/**
* Private constructor.
*
* @param name the name.
* @param calendarField the calendar field.
*/
private DateTickUnitType(String name, int calendarField) {
this.name = name;
this.calendarField = calendarField;
}
/**
* Returns the calendar field.
*
* @return The calendar field.
*/
public int getCalendarField() {
return this.calendarField;
}
/**
* Returns a string representing the object.
*
* @return The string.
*/
public String toString() {
return this.name;
}
/**
* Returns <code>true</code> if this object is equal to the specified
* object, and <code>false</code> otherwise.
*
* @param obj the other object.
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof DateTickUnitType)) {
return false;
}
DateTickUnitType t = (DateTickUnitType) obj;
if (!this.name.equals(t.toString())) {
return false;
}
return true;
}
/**
* Ensures that serialization returns the unique instances.
*
* @return The object.
*
* @throws ObjectStreamException if there is a problem.
*/
private Object readResolve() throws ObjectStreamException {
if (this.equals(DateTickUnitType.YEAR)) {
return DateTickUnitType.YEAR;
}
else if (this.equals(DateTickUnitType.MONTH)) {
return DateTickUnitType.MONTH;
}
else if (this.equals(DateTickUnitType.DAY)) {
return DateTickUnitType.DAY;
}
else if (this.equals(DateTickUnitType.HOUR)) {
return DateTickUnitType.HOUR;
}
else if (this.equals(DateTickUnitType.MINUTE)) {
return DateTickUnitType.MINUTE;
}
else if (this.equals(DateTickUnitType.SECOND)) {
return DateTickUnitType.SECOND;
}
else if (this.equals(DateTickUnitType.MILLISECOND)) {
return DateTickUnitType.MILLISECOND;
}
return null;
}
}
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