/* See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * Esri Inc. 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 com.esri.gpt.framework.util;

import java.util.Enumeration;
import java.util.Iterator;

/**
 * Enumeration adapter.
 */
public class EnumerationAdapter<T> implements Iterable<T> {
  private Enumeration enumeration;

  /**
   * Creates instance of the adapter.
   * @param enumeration enumeration to create iterator over it's elements
   */
  public EnumerationAdapter(Enumeration enumeration) {
    this.enumeration = enumeration;
  }

  public Iterator<T> iterator() {
    return new EnumerationIterator();
  }

  /**
   * Enumeration iterator.
   */
  private class EnumerationIterator extends ReadOnlyIterator<T> {

    public boolean hasNext() {
      return enumeration.hasMoreElements();
    }

    public T next() {
      return (T) enumeration.nextElement();
    }

  }
}