/*
    * 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.component;
  
  import javax.el.ValueExpression;
  import javax.faces.context.FacesContext;
  import javax.faces.convert.Converter;
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFComponent;
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFProperty;
  
  /**
   * Displays a value to the user.
   */
  @JSFComponent(defaultRendererType = "javax.faces.Text")
  public class UIOutput extends UIComponentBase implements ValueHolder
  {
      public static final String COMPONENT_TYPE = "javax.faces.Output";
      public static final String COMPONENT_FAMILY = "javax.faces.Output";
  
      private Object _value;
      private Converter _converter;
  
      /**
       * Construct an instance of the UIOutput.
       */
      public UIOutput()
      {
          setRendererType("javax.faces.Text");
      }
  
      @Override
      public String getFamily()
      {
          return COMPONENT_FAMILY;
      }
  
      public Object getLocalValue()
      {
          return _value;
      }
  
      /**
       * Gets The initial value of this component.
       * 
       * @return the new value value
       */
      @JSFProperty
      public Object getValue()
      {
          if (_value != null)
          {
              return _value;
          }
          ValueExpression expression = getValueExpression("value");
          if (expression != null)
          {
              return expression.getValue(getFacesContext().getELContext());
          }
          return null;
      }
  
      /**
       * The initial value of this component.
       */
      public void setValue(Object value)
      {
          this._value = value;
      }
  
      /**
       * An expression that specifies the Converter for this component.
       * <p>
       * The value can either be a static value (ID) or an EL expression. When a static id is
       * specified, an instance of the converter type registered with that id is used. When this
       * is an EL expression, the result of evaluating the expression must be an object that
       * implements the Converter interface.
       * </p>
       */
      @JSFProperty(stateHolder=true)
      public Converter getConverter()
      {
          if (_converter != null)
          {
             return _converter;
         }
         ValueExpression expression = getValueExpression("converter");
         if (expression != null)
         {
             return (Converter) expression.getValue(getFacesContext().getELContext());
         }
         return null;
     }
 
     public void setConverter(Converter converter)
     {
         this._converter = converter;
     }
 
     @Override
     public Object saveState(FacesContext facesContext)
     {
         Object[] values = new Object[3];
         values[0] = super.saveState(facesContext);
         values[1] = _value;
         values[2] = saveAttachedState(facesContext, _converter);
 
         return values;
     }
 
     @Override
     public void restoreState(FacesContext facesContext, Object state)
     {
         Object[] values = (Object[]) state;
         super.restoreState(facesContext, values[0]);
         _value = values[1];
         _converter = (Converter) restoreAttachedState(facesContext, values[2]);
     }
 }