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   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
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   *
   *    https://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.cayenne.swing;
  
  import java.awt.Component;
  
  import javax.swing.AbstractButton;
  
  /**
   * Binds a checkbox state to an int or boolean property.
   * 
   */
  public class ItemEventBinding extends BindingBase {
  
      protected AbstractButton boundItem;
  
      public ItemEventBinding(AbstractButton boundItem, String expression) {
          super(expression);
          this.boundItem = boundItem;
  
          boundItem.addItemListener(e -> updateModel());
      }
  
      public Component getView() {
          return boundItem;
      }
  
      public void updateView() {
          Object value = getValue();
          boolean b = false;
  
          // convert to boolean
          if (value != null) {
              if (value instanceof Boolean) {
                  b = (Boolean) value;
              } else if (value instanceof Number) {
                  b = ((Number) value).intValue() != 0;
              }
          }
  
          modelUpdateDisabled = true;
          try {
              boundItem.setSelected(b);
          } finally {
              modelUpdateDisabled = false;
          }
      }
  
      protected void updateModel() {
          setValue(boundItem.isSelected() ? Boolean.TRUE : Boolean.FALSE);
      }
  }
  