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1   package org.apache.commons.jcs3.engine.control.event.behavior;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.IOException;
23  
24  /**
25   * Interface for an element event queue. An event queue is used to propagate
26   * ordered element events in one region.
27   */
28  public interface IElementEventQueue
29  {
30      /**
31       * Adds an ElementEvent to be handled
32       *
33       * @param hand
34       *            The IElementEventHandler
35       * @param event
36       *            The IElementEventHandler IElementEvent event
37       * @throws IOException
38       */
39      <T> void addElementEvent( IElementEventHandler hand, IElementEvent<T> event )
40          throws IOException;
41  
42      /**
43       * Destroy the event queue
44       *
45       */
46      void dispose();
47  }