com.att.aro.main.PercentLabelGenerator.java Source code

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Here is the source code for com.att.aro.main.PercentLabelGenerator.java

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/*
 * Copyright 2012 AT&T
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.att.aro.main;

import java.text.DecimalFormat;
import java.text.NumberFormat;

import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.data.category.CategoryDataset;

/**
 * Generates percentage labels for the charts that are displayed on the Overview
 * tab.
 */
public class PercentLabelGenerator extends StandardCategoryItemLabelGenerator {
    private static final long serialVersionUID = 1L;
    private NumberFormat formatter = new DecimalFormat("0.0");

    /**
     * Returns a percentage label string using the data in the specified row and
     * column of the dataset.
     * 
     * @param dataset
     *            The dataset containing the data for the chart.
     * 
     * @param row
     *            The row of data in the dataset.
     * 
     * @param column
     *            The column of data in the dataset.
     * 
     * @return A string that is the percentage label.
     */
    @Override
    public String generateLabel(CategoryDataset dataset, int row, int column) {
        Number value = dataset.getValue(row, column);
        return value != null ? formatter.format(value.doubleValue()) : "";
    }
}