/*
    * 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.application.cdi;
  
  import javax.faces.FacesWrapper;
  import javax.faces.component.PartialStateHolder;
  import javax.faces.component.StateHolder;
  import javax.faces.context.FacesContext;
  
  abstract class AbstractExternalBeanWrapper<T> implements PartialStateHolder, FacesWrapper<T>
  {
      private T wrapped;
  
      protected AbstractExternalBeanWrapper(T wrapped)
      {
          this.wrapped = wrapped;
      }
  
      @Override
      public void markInitialState()
      {
          if (this.wrapped instanceof PartialStateHolder)
          {
              ((PartialStateHolder) this.wrapped).markInitialState();
          }
      }
  
      @Override
      public void clearInitialState()
      {
          if (this.wrapped instanceof PartialStateHolder)
          {
              ((PartialStateHolder) this.wrapped).clearInitialState();
          }
      }
  
      @Override
      public boolean initialStateMarked()
      {
          return this.wrapped instanceof PartialStateHolder && ((PartialStateHolder) this.wrapped).initialStateMarked();
      }
  
      @Override
      public Object saveState(FacesContext context)
      {
          if (this.wrapped instanceof StateHolder)
          {
              return ((StateHolder)wrapped).saveState(context);
          }
  
          return null;
      }
  
      @Override
      public void restoreState(FacesContext context, Object state)
      {
          if (this.wrapped instanceof StateHolder)
          {
              ((StateHolder)this.wrapped).restoreState(context, state);
          }
      }
  
      @Override
      public boolean isTransient()
      {
          return this.wrapped instanceof StateHolder && ((StateHolder) this.wrapped).isTransient();
      }
  
      @Override
      public void setTransient(boolean newTransientValue)
      {
          if (this.wrapped instanceof StateHolder)
          {
              ((StateHolder) this.wrapped).setTransient(newTransientValue);
          }
      }
  
      @Override
      public T getWrapped()
      {
          return this.wrapped;
      }
  }