content: /*
   *                         Vortex OpenSplice
   *
   *   This software and documentation are Copyright 2006 to TO_YEAR ADLINK
   *   Technology Limited, its affiliated companies and licensors. All rights
   *   reserved.
   *
   *   Licensed 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.opensplice.dds.core;
  
  import java.io.Serializable;
  import java.util.EventListener;
  import java.util.concurrent.CountDownLatch;
  
  import org.eclipse.cyclone.dds.core.AbstractDDSObject;
  import org.omg.dds.core.ServiceEnvironment;
  
  public abstract class Listener<T> extends AbstractDDSObject implements EventListener, Serializable {
      private static final long serialVersionUID = 5928369585907075474L;
      private final CountDownLatch initialised;
      protected OsplServiceEnvironment environment;
      protected T listener;
  
      public Listener(OsplServiceEnvironment environment, T listener,
              boolean waitUntilInitialised) {
          this.environment = environment;
          this.listener = listener;
  
          if (waitUntilInitialised) {
              this.initialised = new CountDownLatch(1);
          } else {
              this.initialised = new CountDownLatch(0);
          }
      }
  
      public ServiceEnvironment getEnvironment() {
          return this.environment;
      }
  
      public T getRealListener(){
          return this.listener;
      }
  
      public void setInitialised() {
          this.initialised.countDown();
      }
  
      public void waitUntilInitialised() {
          try {
              this.initialised.await();
          } catch (InterruptedException e) {
              throw new AlreadyClosedExceptionImpl(this.environment,
                      "Listener interrupted.");
          }
      }
  }
  