package org.codehaus.mojo.gwt;
   
   /*
    * 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.io.File;
  import java.io.IOException;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.codehaus.mojo.gwt.utils.GwtModuleReaderException;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * Cleanup the webapp directory for GWT module compilation output
   * 
   * @author <a href="mailto:nicolas@apache.org">Nicolas De Loof</a>
   */
  @Mojo(name = "clean", threadSafe = true)
  public class GwtCleanMojo
      extends AbstractGwtModuleMojo
  {
  
      /**
       * {@inheritDoc}
       * 
       * @see org.apache.maven.plugin.Mojo#execute()
       */
      public void execute()
          throws MojoExecutionException, MojoFailureException
      {
          try
          {
              for ( String name : getModules() )
              {
                  File output = new File( getOutputDirectory(), readModule( name ).getPath() );
                  clean( output );
              }
              clean( new File( getOutputDirectory(), ".gwt-tmp" ) );
          }
          catch ( GwtModuleReaderException e )
          {
              throw new MojoExecutionException( e.getMessage(), e );
          }
      }
  
      private void clean( File output )
      {
          try
          {
              FileUtils.deleteDirectory( output );
          }
          catch ( IOException e )
          {
              getLog().warn( "Failed to delete directory " + output );
          }
      }
  }