/* ===========================================================
 * 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.]
 *
 * ---------------------------
 * CategoryLabelWidthType.java
 * ---------------------------
 * (C) Copyright 2004-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 24-Mar-2004 : Version 1 (DG);
 *
 */

package org.jfree.chart.axis;

import java.io.ObjectStreamException;
import java.io.Serializable;

/**
 * Represents the width types for a category label.
 */
public final class CategoryLabelWidthType implements Serializable {

    /** For serialization. */
    private static final long serialVersionUID = -6976024792582949656L;

    /** Percentage of category. */
    public static final CategoryLabelWidthType
        CATEGORY = new CategoryLabelWidthType(
            "CategoryLabelWidthType.CATEGORY"
        );

    /** Percentage of range. */
    public static final CategoryLabelWidthType
        RANGE = new CategoryLabelWidthType("CategoryLabelWidthType.RANGE");

    /** The name. */
    private String name;

    /**
     * Private constructor.
     *
     * @param name  the name (<code>null</code> not permitted).
     */
    private CategoryLabelWidthType(String name) {
        if (name == null) {
            throw new IllegalArgumentException("Null 'name' argument.");
        }
        this.name = name;
    }

    /**
     * Returns a string representing the object.
     *
     * @return The string (never </code>null</code>).
     */
    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 CategoryLabelWidthType)) {
            return false;
        }
        CategoryLabelWidthType t = (CategoryLabelWidthType) 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(CategoryLabelWidthType.CATEGORY)) {
            return CategoryLabelWidthType.CATEGORY;
        }
        else if (this.equals(CategoryLabelWidthType.RANGE)) {
            return CategoryLabelWidthType.RANGE;
        }
        return null;
    }

}

@@ -214,17 +214,17 @@
 2000-201
-1
+3
 , by Obj
@@ -1367,10 +1367,10 @@
 4-20
-08
+13
 , by
@@ -1556,16 +1556,56 @@
  (DG);%0D%0A
+ * 02-Jul-2013 : Use ParamChecks (DG);%0D%0A
  *%0D%0A */%0D
@@ -1708,16 +1708,58 @@
 izable;%0D
+%0Aimport org.jfree.chart.util.ParamChecks;%0D
 %0A%0D%0A/**%0D%0A
@@ -2067,32 +2067,42 @@
 ryLabelWidthType
+ CATEGORY 
 %0D%0A        CATEGO
@@ -2095,24 +2095,19 @@
         
+ 
-CATEGORY
+  
  = new C
@@ -2128,30 +2128,16 @@
 dthType(
-%0D%0A            
 %22Categor
@@ -2161,26 +2161,16 @@
 ATEGORY%22
-%0D%0A        
 );%0D%0A%0D%0A  
@@ -2246,16 +2246,23 @@
 idthType
+ RANGE 
 %0D%0A      
@@ -2263,21 +2263,19 @@
         
-RANGE
+   
  = new C
@@ -2565,112 +2565,51 @@
     
-if (name == null) %7B%0D%0A            throw new IllegalArgumentException(%22Null 'name' argument.%22);%0D%0A        %7D
+ParamChecks.nullNotPermitted(name, %22name%22);
 %0D%0A  

Use ParamChecks class.