CategorySeries.java

/**
 * Copyright (C) 2009, 2010 SC 4ViewSoft SRL
 *  
 * 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 org.achartengine.model;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 * A series for the category charts like the pie ones.
 */
public class CategorySeries implements Serializable {
  /** The series title. */
  private String mTitle;
  /** The series categories. */
  private List<String> mCategories = new ArrayList<String>();
  /** The series values. */
  private List<Double> mValues = new ArrayList<Double>();

  /**
   * Builds a new category series.
   * 
   * @param title the series title
   */
  public CategorySeries(String title) {
    mTitle = title;
  }

  /**
   * Returns the series title.
   * 
   * @return the series title
   */
  public String getTitle() {
    return mTitle;
  }

  /**
   * Adds a new value to the series
   * 
   * @param value the new value
   */
  public synchronized void add(double value) {
    add(mCategories.size() + "", value);
  }

  /**
   * Adds a new value to the series.
   * 
   * @param category the category
   * @param value the new value
   */
  public synchronized void add(String category, double value) {
    mCategories.add(category);
    mValues.add(value);
  }

  /**
   * Replaces the value at the specific index in the series.
   * 
   * @param index the index in the series
   * @param category the category
   * @param value the new value
   */
  public synchronized void set(int index, String category, double value) {
    mCategories.set(index, category);
    mValues.set(index, value);
  }

  /**
   * Removes an existing value from the series.
   * 
   * @param index the index in the series of the value to remove
   */
  public synchronized void remove(int index) {
    mCategories.remove(index);
    mValues.remove(index);
  }

  /**
   * Removes all the existing values from the series.
   */
  public synchronized void clear() {
    mCategories.clear();
    mValues.clear();
  }

  /**
   * Returns the value at the specified index.
   * 
   * @param index the index
   * @return the value at the index
   */
  public synchronized double getValue(int index) {
    return mValues.get(index);
  }

  /**
   * Returns the category name at the specified index.
   * 
   * @param index the index
   * @return the category name at the index
   */
  public synchronized String getCategory(int index) {
    return mCategories.get(index);
  }

  /**
   * Returns the series item count.
   * 
   * @return the series item count
   */
  public synchronized int getItemCount() {
    return mCategories.size();
  }

  /**
   * Transforms the category series to an XY series.
   * 
   * @return the XY series
   */
  public XYSeries toXYSeries() {
    XYSeries xySeries = new XYSeries(mTitle);
    int k = 0;
    for (double value : mValues) {
      xySeries.add(++k, value);
    }
    return xySeries;
  }
}