package org.apache.maven.lifecycle;
   
   /*
    * 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.
   */
  
  import java.util.List;
  import java.util.concurrent.CopyOnWriteArrayList;
  
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import org.apache.maven.execution.MojoExecutionEvent;
  import org.apache.maven.execution.MojoExecutionListener;
  import org.apache.maven.plugin.MojoExecutionException;
  
  @Named
  @Singleton
  public class DelegatingMojoExecutionListener
      implements MojoExecutionListener
  {
      private final List<MojoExecutionListener> listeners = new CopyOnWriteArrayList<>();
  
      public void beforeMojoExecution( MojoExecutionEvent event )
          throws MojoExecutionException
      {
          for ( MojoExecutionListener listener : listeners )
          {
              listener.beforeMojoExecution( event );
          }
      }
  
      public void afterMojoExecutionSuccess( MojoExecutionEvent event )
          throws MojoExecutionException
      {
          for ( MojoExecutionListener listener : listeners )
          {
              listener.afterMojoExecutionSuccess( event );
          }
      }
  
      public void afterExecutionFailure( MojoExecutionEvent event )
      {
          for ( MojoExecutionListener listener : listeners )
          {
              listener.afterExecutionFailure( event );
          }
      }
  
      public void addMojoExecutionListener( MojoExecutionListener listener )
      {
          this.listeners.add( listener );
      }
  
      public void removeMojoExecutionListener( MojoExecutionListener listener )
      {
          this.listeners.remove( listener );
      }
  
  }