content: /*
   * 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 org.apache.commons.net;
  
  import java.io.Serializable;
  import java.util.EventListener;
  
  import org.apache.commons.net.util.ListenerList;
  
  /***
   * ProtocolCommandSupport is a convenience class for managing a list of
   * ProtocolCommandListeners and firing ProtocolCommandEvents.  You can
   * simply delegate ProtocolCommandEvent firing and listener
   * registering/unregistering tasks to this class.
   *
   *
   * @see ProtocolCommandEvent
   * @see ProtocolCommandListener
   ***/
  
  public class ProtocolCommandSupport implements Serializable
  {
      private static final long serialVersionUID = -8017692739988399978L;
  
      private final Object __source;
      private final ListenerList __listeners;
  
      /***
       * Creates a ProtocolCommandSupport instance using the indicated source
       * as the source of ProtocolCommandEvents.
       *
       * @param source  The source to use for all generated ProtocolCommandEvents.
       ***/
      public ProtocolCommandSupport(Object source)
      {
          __listeners = new ListenerList();
          __source = source;
      }
  
  
      /***
       * Fires a ProtocolCommandEvent signalling the sending of a command to all
       * registered listeners, invoking their
       * {@link org.apache.commons.net.ProtocolCommandListener#protocolCommandSent protocolCommandSent() }
       *  methods.
       *
       * @param command The string representation of the command type sent, not
       *      including the arguments (e.g., "STAT" or "GET").
       * @param message The entire command string verbatim as sent to the server,
       *        including all arguments.
       ***/
      public void fireCommandSent(String command, String message)
      {
          ProtocolCommandEvent event;
  
          event = new ProtocolCommandEvent(__source, command, message);
  
          for (EventListener listener : __listeners)
          {
             ((ProtocolCommandListener)listener).protocolCommandSent(event);
          }
      }
  
      /***
       * Fires a ProtocolCommandEvent signalling the reception of a command reply
       * to all registered listeners, invoking their
       * {@link org.apache.commons.net.ProtocolCommandListener#protocolReplyReceived protocolReplyReceived() }
       *  methods.
       *
       * @param replyCode The integer code indicating the natureof the reply.
       *   This will be the protocol integer value for protocols
       *   that use integer reply codes, or the reply class constant
       *   corresponding to the reply for protocols like POP3 that use
       *   strings like OK rather than integer codes (i.e., POP3Repy.OK).
       * @param message The entire reply as received from the server.
       ***/
      public void fireReplyReceived(int replyCode, String message)
      {
          ProtocolCommandEvent event;
          event = new ProtocolCommandEvent(__source, replyCode, message);
  
          for (EventListener listener : __listeners)
          {
              ((ProtocolCommandListener)listener).protocolReplyReceived(event);
          }
      }
  
      /***
       * Adds a ProtocolCommandListener.
       *
       * @param listener  The ProtocolCommandListener to add.
       ***/
      public void addProtocolCommandListener(ProtocolCommandListener listener)
      {
          __listeners.addListener(listener);
      }
  
      /***
       * Removes a ProtocolCommandListener.
       *
       * @param listener  The ProtocolCommandListener to remove.
       ***/
      public void removeProtocolCommandListener(ProtocolCommandListener listener)
      {
          __listeners.removeListener(listener);
      }
  
  
      /***
       * Returns the number of ProtocolCommandListeners currently registered.
       *
       * @return The number of ProtocolCommandListeners currently registered.
       ***/
      public int getListenerCount()
      {
          return __listeners.getListenerCount();
      }
  
  }
  
  