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/***********************************************************************************************************************
 *
 * blueBill Mobile - open source birdwatching
 * ==========================================
 *
 * Copyright (C) 2009, 2010 by Tidalwave s.a.s. (http://www.tidalwave.it)
 * http://bluebill.tidalwave.it/mobile/
 *
 ***********************************************************************************************************************
 *
 * 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.
 *
 ***********************************************************************************************************************
 *
 * $Id: ObservationCountFormat.java,v 3e7ea5dbefcb 2010/05/17 15:10:54 fabrizio $
 *
 **********************************************************************************************************************/
package it.tidalwave.bluebill.mobile.observation;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import java.util.Locale;
import java.text.ChoiceFormat;
import org.openide.util.NbBundle;

/***********************************************************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id: $
 *
 **********************************************************************************************************************/
public class ObservationCountFormat
  {
    protected int initializationCount = 0; // for testing

    @CheckForNull
    protected Locale locale;

    private ChoiceFormat choice;

    @Nonnull
    public String format (final int n)
      {
        initialize();
        return String.format(choice.format(n), n);
      }

    private synchronized  void initialize()
      {
        if ((locale == null) || !locale.equals(Locale.getDefault()))
          {
            initializationCount++;
            locale = Locale.getDefault();

            final double[] limits = { 0, 1, 2 };
            final String[] parts = new String[]
              {
                NbBundle.getMessage(ObservationCountFormat.class, "noObservations"),
                NbBundle.getMessage(ObservationCountFormat.class, "oneObservation"),
                NbBundle.getMessage(ObservationCountFormat.class, "manyObservations")
              };

            choice = new ChoiceFormat(limits, parts);
          }
      }
  }