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    1   /*
    2    * Copyright 2012 The Netty Project
    3    *
    4    * The Netty Project licenses this file to you under the Apache License,
    5    * version 2.0 (the "License"); you may not use this file except in compliance
    6    * with the License. You may obtain a copy of the License at:
    7    *
    8    *   http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    13   * License for the specific language governing permissions and limitations
    14   * under the License.
    15   */
    16  package org.jboss.netty.channel.group;
    17
    18  import java.util.EventListener;
    19
    20  /**
    21   * Listens to the result of a {@link ChannelGroupFuture}.  The result of the
    22   * asynchronous {@link ChannelGroup} I/O operations is notified once this
    23   * listener is added by calling {@link ChannelGroupFuture#addListener(ChannelGroupFutureListener)}
    24   * and all I/O operations are complete.
    25   */
    26  public interface ChannelGroupFutureListener extends EventListener {
    27
    28      /**
    29       * Invoked when all I/O operations associated with the
    30       * {@link ChannelGroupFuture} have been completed.
    31       *
    32       * @param future  The source {@link ChannelGroupFuture} which called this
    33       *                callback.
    34       */
    35      void operationComplete(ChannelGroupFuture future) throws Exception;
    36  }