package fr.ifremer.tutti.ui.swing.util.computable;
   
   /*
    * #%L
    * Tutti :: UI
    * %%
    * Copyright (C) 2012 - 2014 Ifremer
    * %%
    * This program 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.
   * 
   * This program 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 this program.  If not, see
   * <http://www.gnu.org/licenses/gpl-3.0.html>.
   * #L%
   */
  
  import fr.ifremer.tutti.util.Numbers;
  import org.jdesktop.beans.AbstractSerializableBean;
  import org.nuiton.jaxx.application.bean.JavaBeanObject;
  import org.nuiton.jaxx.application.bean.JavaBeanObjectPropagateChangeListener;
  
  
  /**
   * A number data plus a possible computed value.
   *
   * @author Kevin Morin - kmorin@codelutin.com
   * @since 1.0
   */
  public class ComputableData<N extends Number> extends AbstractSerializableBean implements JavaBeanObject {
  
      public static final String PROPERTY_DATA = "data";
  
      public static final String PROPERTY_COMPUTED_DATA = "computedData";
  
      private static final long serialVersionUID = 1L;
  
      protected N data;
  
      protected N computedData;
  
      public ComputableData() {
          data = null;
          computedData = null;
      }
  
      public ComputableData(N data, N computedData) {
          this.data = data;
          this.computedData = computedData;
      }
  
      public N getData() {
          return data;
      }
  
      public void setData(N data) {
          Object oldValue = getData();
          this.data = data;
          firePropertyChange(PROPERTY_DATA, oldValue, data);
      }
  
      public N getComputedData() {
          return computedData;
      }
  
      public void setComputedData(N computedData) {
          Object oldValue = getComputedData();
          this.computedData = computedData;
          firePropertyChange(PROPERTY_COMPUTED_DATA, oldValue, computedData);
      }
  
      public N getDataOrComputedData() {
          return Numbers.getValueOrComputedValue(data, computedData);
      }
  
      @Override
      public String toString() {
          String result = null;
          N dataOrComputedData = getDataOrComputedData();
          if (dataOrComputedData != null) {
              result = dataOrComputedData.toString();
          }
          return result;
      }
  
      /**
       * Add a listener to propagate the modification of the
       * {@link #PROPERTY_DATA} property to a given {@code propertyName}.
       *
       * @param propertyName name of the property to fire on given bean
       * @param otherBean    bean that will fires
       * @since 1.2
      */
     public void addPropagateListener(String propertyName,
                                      JavaBeanObject otherBean) {
 
         JavaBeanObjectPropagateChangeListener.listenAndPropagate(this, otherBean, PROPERTY_DATA, propertyName);
     }
 
     @Override
     public void firePropertyChanged(String propertyName, Object oldValue, Object newValue) {
         super.firePropertyChange(propertyName, oldValue, newValue);
     }
 
 }