/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * 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
    * 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.
   */
  package javax.faces.convert;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFConverter;
  
  /**
   * see Javadoc of <a href="http://java.sun.com/javaee/javaserverfaces/1.2/docs/api/index.html">JSF Specification</a>
   */
  @JSFConverter
  public class BooleanConverter
          implements Converter
  {
      // FIELDS
      public static final String CONVERTER_ID = "javax.faces.Boolean";
      public static final String STRING_ID = "javax.faces.converter.STRING";
      public static final String BOOLEAN_ID = "javax.faces.converter.BooleanConverter.BOOLEAN";
  
      // CONSTRUCTORS
      public BooleanConverter()
      {
      }
  
      // METHODS
      public Object getAsObject(FacesContext facesContext, UIComponent uiComponent, String value)
      {
          if (facesContext == null)
          {
              throw new NullPointerException("facesContext");
          }
          if (uiComponent == null)
          {
              throw new NullPointerException("uiComponent");
          }
  
          if (value != null)
          {
              value = value.trim();
              if (value.length() > 0)
              {
                  try
                  {
                      return Boolean.valueOf(value);
                  }
                  catch (Exception e)
                  {
                      throw new ConverterException(_MessageUtils.getErrorMessage(facesContext,
                                         BOOLEAN_ID,
                                         new Object[]{value,_MessageUtils.getLabel(facesContext, uiComponent)}), e);
                  }
              }
          }
          return null;
      }
  
      public String getAsString(FacesContext facesContext, UIComponent uiComponent, Object value)
      {
          if (facesContext == null)
          {
              throw new NullPointerException("facesContext");
          }
          if (uiComponent == null)
          {
              throw new NullPointerException("uiComponent");
          }
  
          if (value == null)
          {
              return "";
          }
          if (value instanceof String)
          {
              return (String)value;
          }
          try
          {
              return ((Boolean)value).toString();
          }
          catch (Exception e)
          {
             throw new ConverterException(_MessageUtils.getErrorMessage(facesContext, STRING_ID,
                     new Object[]{value,_MessageUtils.getLabel(facesContext, uiComponent)}),e);
         }
     }
 }