org.jfree.chart.ui.HorizontalAlignment Maven / Gradle / Ivy
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-present, by David Gilbert 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.]
*
*/
package org.jfree.chart.ui;
import java.io.ObjectStreamException;
import java.io.Serializable;
/**
* An enumeration of the horizontal alignment types ({@code LEFT},
* {@code RIGHT} and {@code CENTER}).
*/
public final class HorizontalAlignment implements Serializable {
/** For serialization. */
private static final long serialVersionUID = -8249740987565309567L;
/** Left alignment. */
public static final HorizontalAlignment LEFT
= new HorizontalAlignment("HorizontalAlignment.LEFT");
/** Right alignment. */
public static final HorizontalAlignment RIGHT
= new HorizontalAlignment("HorizontalAlignment.RIGHT");
/** Center alignment. */
public static final HorizontalAlignment CENTER
= new HorizontalAlignment("HorizontalAlignment.CENTER");
/** The name. */
private String name;
/**
* Private constructor.
*
* @param name the name.
*/
private HorizontalAlignment(String name) {
this.name = name;
}
/**
* Returns a string representing the object.
*
* @return The string.
*/
@Override
public String toString() {
return this.name;
}
/**
* Returns {@code true} if this object is equal to the specified
* object, and {@code false} otherwise.
*
* @param obj the object ({@code null} permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof HorizontalAlignment)) {
return false;
}
final HorizontalAlignment that = (HorizontalAlignment) obj;
if (!this.name.equals(that.name)) {
return false;
}
return true;
}
/**
* Returns a hash code value for the object.
*
* @return The hashcode
*/
@Override
public int hashCode() {
return this.name.hashCode();
}
/**
* Ensures that serialization returns the unique instances.
*
* @return The object.
*
* @throws ObjectStreamException if there is a problem.
*/
private Object readResolve() throws ObjectStreamException {
HorizontalAlignment result = null;
if (this.equals(HorizontalAlignment.LEFT)) {
result = HorizontalAlignment.LEFT;
}
else if (this.equals(HorizontalAlignment.RIGHT)) {
result = HorizontalAlignment.RIGHT;
}
else if (this.equals(HorizontalAlignment.CENTER)) {
result = HorizontalAlignment.CENTER;
}
return result;
}
}