/*
    * 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 org.apache.myfaces.config.impl.digester.elements;
  
  import java.io.Serializable;
  
  import javax.faces.context.FacesContext;
  import javax.faces.el.ValueBinding;
  
  import org.apache.myfaces.util.ContainerUtils;
  
  
  /**
   * @author <a href="mailto:oliver@rossmueller.com">Oliver Rossmueller</a> (latest modification by $Author$)
   * @author Anton Koinov
   *
   * @version $Revision$ $Date$
   */
  public class ManagedPropertyImpl extends org.apache.myfaces.config.element.ManagedProperty implements Serializable
  {
      private static final ValueBinding DUMMY_VB = new DummyValueBinding();
  
      private int                       _type    = TYPE_UNKNOWN;
      private String                    _propertyName;
      private String                    _propertyClass;
      private transient ValueBinding    _valueBinding;
      private String                    _value;
      private org.apache.myfaces.config.element.MapEntries                _mapEntries;
      private org.apache.myfaces.config.element.ListEntries               _listEntries;
  
      public int getType()
      {
          return _type;
      }
      
      public org.apache.myfaces.config.element.MapEntries getMapEntries()
      {
          return _mapEntries;
      }
      
      public void setMapEntries(org.apache.myfaces.config.element.MapEntries mapEntries)
      {
          _mapEntries = mapEntries;
          _type = TYPE_MAP;
      }
      
      public org.apache.myfaces.config.element.ListEntries getListEntries()
      {
          return _listEntries;
      }
      
      public void setListEntries(ListEntriesImpl listEntries)
      {
          _listEntries = listEntries;
          _type = TYPE_LIST;
      }
      
      public String getPropertyName()
      {
          return _propertyName;
      }
      
      public void setPropertyName(String propertyName)
      {
          _propertyName = propertyName;
      }
      
      public String getPropertyClass()
      {
          return _propertyClass;
      }
      
      public void setPropertyClass(String propertyClass)
      {
          _propertyClass = propertyClass;
      }
      
      public boolean isNullValue()
      {
          return _type == TYPE_NULL;
      }
      
      public void setNullValue()
     {
         _type = TYPE_NULL;
     }
     
     public void setValue(String value)
     {
         _value = value;
         _type = TYPE_VALUE;
     }
 
     public String getValue()
     {
         return _value;
     }
     
     public Object getRuntimeValue(FacesContext facesContext)
     {
         getValueBinding(facesContext);
 
         return (_valueBinding == DUMMY_VB)
             ? _value : _valueBinding.getValue(facesContext);
     }
     
     public ValueBinding getValueBinding(FacesContext facesContext)
     {
         if (_valueBinding == null)
         {
             _valueBinding =
                 isValueReference()
                 ? facesContext.getApplication().createValueBinding(_value)
                 : DUMMY_VB;
         }
         return _valueBinding;
     }
     
     public boolean isValueReference()
     {
         return ContainerUtils.isValueReference(_value);
     }
     
     private static class DummyValueBinding extends ValueBinding
     {
         @Override
         public String getExpressionString()
         {
             throw new UnsupportedOperationException();
         }
 
         @Override
         public Class<?> getType(FacesContext facesContext)
         {
             throw new UnsupportedOperationException();
         }
 
         @Override
         public Object getValue(FacesContext facesContext)
         {
             throw new UnsupportedOperationException();
         }
 
         @Override
         public boolean isReadOnly(FacesContext facesContext)
         {
             throw new UnsupportedOperationException();
         }
 
         @Override
         public void setValue(FacesContext facesContext, Object value)
         {
             throw new UnsupportedOperationException();
         }
     }
 }