/* ===========================================================
 
* JFreeChart : a free chart library for the Java(tm) platform
 
* ===========================================================
 
*
 
* (C) Copyright 2000-2016, 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.]
 
*
 
* -------------------------------
 
* BubbleXYItemLabelGenerator.java
 
* -------------------------------
 
* (C) Copyright 2005-2016, by Object Refinery Limited.
 
*
 
* Original Author:
  
David Gilbert (for Object Refinery Limited);
 
* Contributor(s):
   
-;
 
*
 
* Changes
 
* -------
 
* 13-Dec-2005 : Version 1, based on StandardXYZToolTipGenerator (DG);
 
* 26-Jan-2006 : Renamed StandardXYZItemLabelGenerator
 
*
               
--> BubbleXYItemLabelGenerator (DG);
 
* 23-Nov-2007 : Implemented hashCode() (DG);
 
* 23-Apr-2008 : Implemented PublicCloneable (DG);
 
* 03-Jul-2013 : Use ParamChecks (DG);
 
*
 
*/

package org.jfree.chart.labels;

import java.io.Serializable;
import java.text.DateFormat;
import java.text.MessageFormat;
import java.text.NumberFormat;

import org.jfree.chart.HashUtils;
import org.jfree.chart.renderer.xy.XYBubbleRenderer;
import org.jfree.chart.util.ObjectUtils;
import org.jfree.chart.util.Args;
import org.jfree.chart.util.PublicCloneable;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYZDataset;

/**
 
* An item label generator defined for use with the {@link XYBubbleRenderer}
 
* class, or any other class that uses an {@link XYZDataset}.
 
*
 
* @since 1.0.1
 
*/

public class BubbleXYItemLabelGenerator extends AbstractXYItemLabelGenerator
        
implements XYItemLabelGenerator, PublicCloneable, Serializable {

    
/** For serialization. */
    
static final long serialVersionUID = -8458568928021240922L;

    
/** The default item label format. */
    
public static final String DEFAULT_FORMAT_STRING = "{3}";

    
/**
     
* A number formatter for the z value - if this is {@code null}, then
     
* zDateFormat must be non-null.
     
*/

    
private NumberFormat zFormat;

    
/**
     
* A date formatter for the z-value - if this is null, then zFormat must be
     
* non-null.
     
*/

    
private DateFormat zDateFormat;

    
/**
     
* Creates a new tool tip generator using default number formatters for the
     
* x, y and z-values.
     
*/

    
public BubbleXYItemLabelGenerator() {
        
this(DEFAULT_FORMAT_STRING, NumberFormat.getNumberInstance(),
                
NumberFormat.getNumberInstance(),
                
NumberFormat.getNumberInstance());
    
}

    
/**
     
* Constructs a new tool tip generator using the specified number
     
* formatters.
     
*
     
* @param formatString
  
the format string.
     
* @param xFormat
  
the format object for the x values ({@code null}
     
*
                 
not permitted).
     
* @param yFormat
  
the format object for the y values ({@code null}
     
*
                 
not permitted).
     
* @param zFormat
  
the format object for the z values ({@code null}
     
*
                 
not permitted).
     
*/

    
public BubbleXYItemLabelGenerator(String formatString,
            
NumberFormat xFormat, NumberFormat yFormat, NumberFormat zFormat) {
        
super(formatString, xFormat, yFormat);
        
Args.nullNotPermitted(zFormat, "zFormat");
        
this.zFormat = zFormat;
    
}

    
/**
     
* Constructs a new item label generator using the specified date
     
* formatters.
     
*
     
* @param formatString
  
the format string.
     
* @param xFormat
  
the format object for the x values ({@code null}
     
*
                 
not permitted).
     
* @param yFormat
  
the format object for the y values ({@code null}
     
*
                 
not permitted).
     
* @param zFormat
  
the format object for the z values ({@code null}
     
*
                 
not permitted).
     
*/

    
public BubbleXYItemLabelGenerator(String formatString,
            
DateFormat xFormat, DateFormat yFormat, DateFormat zFormat) {
        
super(formatString, xFormat, yFormat);
        
Args.nullNotPermitted(zFormat, "zFormat");
        
this.zDateFormat = zFormat;
    
}

    
/**
     
* Returns the number formatter for the z-values.
     
*
     
* @return The number formatter (possibly {@code null}).
     
*/

    
public NumberFormat getZFormat() {
        
return this.zFormat;
    
}

    
/**
     
* Returns the date formatter for the z-values.
     
*
     
* @return The date formatter (possibly {@code null}).
     
*/

    
public DateFormat getZDateFormat() {
        
return this.zDateFormat;
    
}

    
/**
     
* Generates an item label for a particular item within a series.
     
*
     
* @param dataset
  
the dataset ({@code null} not permitted).
     
* @param series
  
the series index (zero-based).
     
* @param item
  
the item index (zero-based).
     
*
     
* @return The item label (possibly {@code null}).
     
*/

    
@Override
    
public String generateLabel(XYDataset dataset, int series, int item) {
        
return generateLabelString(dataset, series, item);
    
}

    
/**
     
* Generates a label string for an item in the dataset.
     
*
     
* @param dataset
  
the dataset ({@code null} not permitted).
     
* @param series
  
the series (zero-based index).
     
* @param item
  
the item (zero-based index).
     
*
     
* @return The label (possibly {@code null}).
     
*/

    
@Override
    
public String generateLabelString(XYDataset dataset, int series, int item) {
        
String result;
        
Object[] items;
        
if (dataset instanceof XYZDataset) {
            
items = createItemArray((XYZDataset) dataset, series, item);
        
}
        
else {
            
items = createItemArray(dataset, series, item);
        
}
        
result = MessageFormat.format(getFormatString(), items);
        
return result;
    
}

    
/**
     
* Creates the array of items that can be passed to the
     
* {@link MessageFormat} class for creating labels.
     
*
     
* @param dataset
  
the dataset ({@code null} not permitted).
     
* @param series
  
the series (zero-based index).
     
* @param item
  
the item (zero-based index).
     
*
     
* @return The items (never {@code null}).
     
*/

    
protected Object[] createItemArray(XYZDataset dataset,
                                       
int series, int item) {

        
Object[] result = new Object[4];
        
result[0] = dataset.getSeriesKey(series).toString();

        
Number x = dataset.getX(series, item);
        
DateFormat xf = getXDateFormat();
        
if (xf != null) {
            
result[1] = xf.format(x);
        
}
        
else {
            
result[1] = getXFormat().format(x);
        
}

        
Number y = dataset.getY(series, item);
        
DateFormat yf = getYDateFormat();
        
if (yf != null) {
            
result[2] = yf.format(y);
        
}
        
else {
            
result[2] = getYFormat().format(y);
        
}

        
Number z = dataset.getZ(series, item);
        
if (this.zDateFormat != null) {
            
result[3] = this.zDateFormat.format(z);
        
}
        
else {
            
result[3] = this.zFormat.format(z);
        
}

        
return result;

    
}

    
/**
     
* Tests this object for equality with an arbitrary object.
     
*
     
* @param obj
  
the other object ({@code null} permitted).
     
*
     
* @return A boolean.
     
*/

    
@Override
    
public boolean equals(Object obj) {
        
if (obj == this) {
            
return true;
        
}
        
if (!(obj instanceof BubbleXYItemLabelGenerator)) {
            
return false;
        
}
        
if (!super.equals(obj)) {
            
return false;
        
}
        
BubbleXYItemLabelGenerator that = (BubbleXYItemLabelGenerator) obj;
        
if (!ObjectUtils.equal(this.zFormat, that.zFormat)) {
            
return false;
        
}
        
if (!ObjectUtils.equal(this.zDateFormat, that.zDateFormat)) {
            
return false;
        
}
        
return true;
    
}

    
/**
     
* Returns a hash code for this instance.
     
*
     
* @return A hash code.
     
*/
    
@Override
    
public int hashCode() {
        
int h = super.hashCode();
        
h = HashUtils.hashCode(h, this.zFormat);
        
h = HashUtils.hashCode(h, this.zDateFormat);
        
return h;
    
}

}