/*

  * 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 java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 import java.util.NoSuchElementException;

 class _FacetsAndChildrenIterator implements Iterator<UIComponent>

 {

     private Iterator<UIComponent> _facetsIterator;

     private Iterator<UIComponent> _childrenIterator;

     _FacetsAndChildrenIterator(Map<String, UIComponent> facetMap, List<UIComponent> childrenList)

     {

         _facetsIterator = facetMap != null ? facetMap.values().iterator() : null;

         _childrenIterator = childrenList != null ? childrenList.iterator() : null;

     }

     public boolean hasNext()

     {

         boolean hasNext = (_facetsIterator != null && _facetsIterator.hasNext())

                 || (_childrenIterator != null && _childrenIterator.hasNext());

         if (!hasNext)

         {

             _facetsIterator = null;

             _childrenIterator = null;

         }

         return hasNext;

     }

     public UIComponent next()

     {

         if (_facetsIterator != null && _facetsIterator.hasNext())

         {

             return _facetsIterator.next();

         }

         else if (_childrenIterator != null && _childrenIterator.hasNext())

         {

             return _childrenIterator.next();

         }

         else

         {

             throw new NoSuchElementException();

         }

     }

     public void remove()

     {

         throw new UnsupportedOperationException(this.getClass().getName() + " UnsupportedOperationException");

     }

 }