Coverage report

  %line %branch
nl.toolforge.karma.core.cmd.CommandResponse
27% 
83% 

 1   
 /*
 2   
 Karma core - Core of the Karma application
 3   
 Copyright (C) 2004  Toolforge <www.toolforge.nl>
 4   
 
 5   
 This library is free software; you can redistribute it and/or
 6   
 modify it under the terms of the GNU Lesser General Public
 7   
 License as published by the Free Software Foundation; either
 8   
 version 2.1 of the License, or (at your option) any later version.
 9   
 
 10   
 This library is distributed in the hope that it will be useful,
 11   
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 12   
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 13   
 Lesser General Public License for more details.
 14   
 
 15   
 You should have received a copy of the GNU Lesser General Public
 16   
 License along with this library; if not, write to the Free Software
 17   
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 18   
 */
 19   
 package nl.toolforge.karma.core.cmd;
 20   
 
 21   
 import nl.toolforge.karma.core.cmd.event.CommandFinishedEvent;
 22   
 import nl.toolforge.karma.core.cmd.event.CommandResponseEvent;
 23   
 import nl.toolforge.karma.core.cmd.event.CommandResponseListener;
 24   
 import nl.toolforge.karma.core.cmd.event.CommandStartedEvent;
 25   
 import org.apache.commons.logging.Log;
 26   
 import org.apache.commons.logging.LogFactory;
 27   
 
 28   
 import java.util.ArrayList;
 29   
 import java.util.Iterator;
 30   
 import java.util.List;
 31   
 
 32   
 /**
 33   
  * A <code>CommandResponse</code> object is used to dispatch {@link CommandResponseEvent} events to listeners that are
 34   
  * interested in those events. These objects can be fed with <code>n</code> {@link CommandResponseListener}s.
 35   
  *
 36   
  * @author W.M. Oosterom
 37   
  * @author D.A. Smedes
 38   
  * @author W.H. Schraal
 39   
  * @version $Id: CommandResponse.java,v 1.28 2004/11/10 23:53:08 asmedes Exp $
 40   
  */
 41  48 
 public class CommandResponse {
 42  66 
 
 43  186 
   private static Log logger = LogFactory.getLog(CommandResponse.class);
 44  198 
 
 45  126 
   private List listeners = new ArrayList();
 46   
 
 47   
   /**
 48  288 
    * Constructs a command response object.
 49  396 
    */
 50  252 
   public CommandResponse() {}
 51   
 
 52   
   /**
 53   
    * Dispatches the event to all {@link CommandResponseListener}s. If no listener has been registered, a warning will
 54   
    * be written to the log system.
 55   
    *
 56   
    * @param event The event that should be dispatched.
 57   
    */
 58   
   public synchronized void addEvent(CommandResponseEvent event) {
 59  0 
     if (listeners.size() > 0) {
 60  0 
       for (Iterator it = listeners.iterator(); it.hasNext(); ) {
 61  0 
         CommandResponseListener listener = (CommandResponseListener) it.next();
 62   
 
 63  0 
         if (event instanceof CommandStartedEvent) {
 64  0 
           listener.commandStarted(event);
 65  0 
         } else if (event instanceof CommandFinishedEvent) {
 66  0 
           listener.commandFinished(event);
 67   
         } else {
 68  0 
           listener.messageLogged(event);
 69   
         }
 70   
 
 71   
       }
 72   
     } else {
 73  0 
       logger.warn("No listener registered for command response (messages sent to /dev/null ...)");
 74   
     }
 75  0 
   }
 76   
 
 77   
   /**
 78   
    * Adds a {@link CommandResponseListener} that is interested in events added to this <code>CommandResponse</code>.
 79   
    *
 80   
    * @param responseListener
 81   
    */
 82   
   public final synchronized void addCommandResponseListener(CommandResponseListener responseListener) {
 83  0 
     listeners.add(responseListener);
 84  0 
   }
 85   
 
 86   
   /**
 87   
    * Removes <code>responseListener</code> from this <code>CommandResponse</code>.
 88   
    */
 89   
   public final synchronized void removeCommandReponseListener(CommandResponseListener responseListener) {
 90  0 
     listeners.remove(responseListener);
 91  0 
   }
 92   
 
 93   
 }

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