/**
    * This file is part of Indicators.
    *
    * Indicators is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    *
    * Indicators 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with Indicators. If not, see <https://www.gnu.org/licenses/>.
   */
  package fr.inrae.agroclim.indicators.model.data;
  
  import java.io.Serializable;
  
  import javax.swing.event.EventListenerList;
  
  import fr.inrae.agroclim.indicators.model.data.DataLoadingListener.DataFile;
  import lombok.extern.log4j.Log4j2;
  
  /**
   * Listener handler for data loading.
   *
   * This is a utility class that can be used by beans that support listeners for
   * data loading events. It manages a list of listeners and dispatches messages
   * to them. You can use an instance of this class as a member field of your bean
   * and delegate these types of work to it.
   *
   * Last changed : $Date$
   *
   * @author $Author$
   * @version $Revision$
   */
  @Log4j2
  public class DataLoadingListenerHandler implements HasDataLoadingListener,
  Serializable {
      /**
       * UID for serialization.
       */
      private static final long serialVersionUID = -2141365352070901695L;
  
      /**
       * List for all listeners.
       */
      private final EventListenerList listeners;
  
      /**
       * Constructor.
       */
      public DataLoadingListenerHandler() {
          listeners = new EventListenerList();
      }
  
      /**
       * Constructor with a list.
       *
       * @param eventListenerList
       *            list for event listeners
       */
      public DataLoadingListenerHandler(final EventListenerList eventListenerList) {
          listeners = eventListenerList;
      }
  
      @Override
      public final void addDataLoadingListener(final DataLoadingListener l) {
          for (final DataLoadingListener listener : getDataLoadingListeners()) {
              if (listener.equals(l)) {
                  return;
              }
          }
          listeners.add(DataLoadingListener.class, l);
      }
  
      @Override
      public final void addDataLoadingListeners(final DataLoadingListener[] ls) {
          for (final DataLoadingListener l : ls) {
              addDataLoadingListener(l);
          }
      }
  
      @Override
      public final void fireDataLoadingAddEvent(final Data data) {
          for (final DataLoadingListener listener : getDataLoadingListeners()) {
              listener.onDataLoadingAdd(data);
          }
      }
  
      @Override
      public final void fireDataLoadingEndEvent(final String text) {
          for (final DataLoadingListener listener : getDataLoadingListeners()) {
              listener.onDataLoadingEnd(text);
          }
      }
  
     @Override
     public final void fireDataLoadingStartEvent(final String text) {
         for (final DataLoadingListener listener : getDataLoadingListeners()) {
             listener.onDataLoadingStart(text);
         }
     }
 
     @Override
     public final void fireDataSetEvent(final DataFile type) {
         LOGGER.traceEntry();
         for (final DataLoadingListener listener : getDataLoadingListeners()) {
             listener.onFileSet(type);
         }
     }
 
     @Override
     public final DataLoadingListener[] getDataLoadingListeners() {
         return listeners.getListeners(DataLoadingListener.class);
     }
 }