package org.apache.maven.plugins.checkstyle;
   
   /*
    * 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.ArrayList;
  import java.util.List;
  
  import com.puppycrawl.tools.checkstyle.api.AuditEvent;
  import com.puppycrawl.tools.checkstyle.api.AuditListener;
  
  /**
   * AuditListener that forwards events to a list of other AuditListeners
   */
  public class CompositeAuditListener
      implements AuditListener
  {
  
      private final List<AuditListener> delegates = new ArrayList<>();
  
      public void addListener( AuditListener listener )
      {
          delegates.add( listener );
      }
  
      @Override
      public void auditStarted( AuditEvent event )
      {
          for ( AuditListener listener : delegates )
          {
              listener.auditStarted( event );
          }
      }
  
      @Override
      public void auditFinished( AuditEvent event )
      {
          for ( AuditListener listener : delegates )
          {
              listener.auditFinished( event );
          }
      }
  
      @Override
      public void fileStarted( AuditEvent event )
      {
          for ( AuditListener listener : delegates )
          {
              listener.fileStarted( event );
          }
      }
  
      @Override
      public void fileFinished( AuditEvent event )
      {
          for ( AuditListener listener : delegates )
          {
              listener.fileFinished( event );
          }
      }
  
      @Override
      public void addError( AuditEvent event )
      {
          for ( AuditListener listener : delegates )
          {
              listener.addError( event );
          }
      }
  
      @Override
      public void addException( AuditEvent event, Throwable throwable )
      {
          for ( AuditListener listener : delegates )
          {
              listener.addException( event, throwable );
          }
      }
  
  }