org.eclipse.osee.ote.client.msg/src/org/eclipse/osee/ote/client/msg/core/AbstractMessageListener.java

/*******************************************************************************
 * Copyright (c) 2004, 2007 Boeing.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.ote.client.msg.core;

import org.eclipse.osee.ote.message.MessageSystemException;
import org.eclipse.osee.ote.message.listener.IOSEEMessageListener;

/**
 * @author Ken J. Aguilar
 */
public abstract class AbstractMessageListener implements ISubscriptionListener, IOSEEMessageListener {

   private final IMessageSubscription subscription;

   protected AbstractMessageListener(IMessageSubscription subscription) {
      this.subscription = subscription;
   }

   @Override
   public void subscriptionCanceled(IMessageSubscription subscription) {
      if (subscription.isResolved()) {
         subscription.getMessage().removeListener(this);
      }
   }

   @Override
   public void subscriptionResolved(IMessageSubscription subscription) {
      if (subscription.isResolved()) {
         subscription.getMessage().addListener(this);
      }
   }

   @Override
   public void subscriptionUnresolved(IMessageSubscription subscription) {
   }

   @Override
   public void onInitListener() throws MessageSystemException {
   }

   public IMessageSubscription getSubscription() {
      return subscription;
   }
}