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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2020, 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 2005-2020, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
*/
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;
}
}
