/*
******************************************************************************
* Copyright (C) 2007, International Business Machines Corporation and   *
* others. All Rights Reserved.                                               *
******************************************************************************
*/

package com.ibm.icu.impl.duration;

import com.ibm.icu.impl.duration.impl.PeriodFormatterDataService;
import com.ibm.icu.impl.duration.impl.ResourceBasedPeriodFormatterDataService;

import java.util.Collection;

/**
 * An implementation of PeriodFormatterService that constructs a
 * BasicPeriodFormatterFactory.
 */
public class BasicPeriodFormatterService implements PeriodFormatterService {
  private static BasicPeriodFormatterService instance;
  private PeriodFormatterDataService ds;

  /**
   * Return the default service instance.  This uses the
   * default data service.
   *
   * @return an BasicPeriodFormatterService
   */
  public static BasicPeriodFormatterService getInstance() {
    if (instance == null) {
     PeriodFormatterDataService ds = 
         ResourceBasedPeriodFormatterDataService.getInstance();
      instance = new BasicPeriodFormatterService(ds);
    }
    return instance;
  }

  /**
   * Construct a BasicPeriodFormatterService using the given 
   * PeriodFormatterDataService.
   *
   * @param ds the data service to use
   */
  public BasicPeriodFormatterService(PeriodFormatterDataService ds) {
    this.ds = ds;
  }

  public DurationFormatterFactory newDurationFormatterFactory() {
    return new BasicDurationFormatterFactory(this);
  }

  public PeriodFormatterFactory newPeriodFormatterFactory() {
    return new BasicPeriodFormatterFactory(ds);
  }

  public PeriodBuilderFactory newPeriodBuilderFactory() {
    return new BasicPeriodBuilderFactory(ds);
  }

  public Collection getAvailableLocaleNames() {
    return ds.getAvailableLocales();
  }
}