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   /*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project 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.jboss.netty.handler.timeout;
  
  import static org.jboss.netty.channel.Channels.*;
  
  import java.text.DateFormat;
  import java.util.Date;
  import java.util.Locale;
  
  import org.jboss.netty.channel.Channel;
  import org.jboss.netty.channel.ChannelFuture;
  
  /**
   * The default {@link IdleStateEvent} implementation.
   */
  public class DefaultIdleStateEvent implements IdleStateEvent {
  
      private final Channel channel;
      private final IdleState state;
      private final long lastActivityTimeMillis;
  
      /**
       * Creates a new instance.
       */
      public DefaultIdleStateEvent(
              Channel channel, IdleState state, long lastActivityTimeMillis) {
          if (channel == null) {
              throw new NullPointerException("channel");
          }
          if (state == null) {
              throw new NullPointerException("state");
          }
          this.channel = channel;
          this.state = state;
          this.lastActivityTimeMillis = lastActivityTimeMillis;
      }
  
      public Channel getChannel() {
          return channel;
      }
  
      public ChannelFuture getFuture() {
          return succeededFuture(getChannel());
      }
  
      public IdleState getState() {
          return state;
      }
  
      public long getLastActivityTimeMillis() {
          return lastActivityTimeMillis;
      }
  
      @Override
      public String toString() {
          return getChannel().toString() + ' ' + getState() + " since " +
                 DateFormat.getDateTimeInstance(
                         DateFormat.SHORT, DateFormat.SHORT, Locale.US).format(
                                 new Date(getLastActivityTimeMillis()));
      }
  }