/*
    * 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.
   */
  
  package org.apache.maven.plugin.eclipse;
  
  import org.codehaus.plexus.util.xml.XMLWriter;
  import org.codehaus.plexus.util.xml.Xpp3Dom;
  
  /**
   * Represents a LinkedResources section in the <code>.project</code> file.
   * 
   * @author <a href="mailto:ashoknanw@gmail.com">Ashokkumar Sankaran</a>
   */
  public class LinkedResource
  {
      /** Resource name */
      private String name;
  
      /** Type */
      private String type;
  
      /** Resource location */
      private String location;
  
      /** Resource localtionURI */
      private String locationURI;
  
      public String getName()
      {
          return name;
      }
  
      public void setName( String name )
      {
          this.name = name;
      }
  
      public String getType()
      {
          return type;
      }
  
      public void setType( String type )
      {
          this.type = type;
      }
  
      public String getLocation()
      {
          return location;
      }
  
      public void setLocation( String location )
      {
          this.location = location;
      }
  
      public String getLocationURI()
      {
          return locationURI;
      }
  
      public void setLocationURI( String locationURI )
      {
          this.locationURI = locationURI;
      }
  
      /**
       * Default constructor
       */
      public LinkedResource()
      {
          super();
      }
  
      /**
       * Creates a LinkedResource from a DOM subtree
       * <p>
       * The subtree must represent a &lt;linkedResources&gt; section from an Eclipse .project file
       * 
       * @param node DOM node
       */
      public LinkedResource( Xpp3Dom node )
     {
         Xpp3Dom nameNode = node.getChild( "name" );
 
         if ( nameNode == null )
         {
             throw new IllegalArgumentException( "No name node." );
         }
 
         name = nameNode.getValue();
 
         Xpp3Dom typeNode = node.getChild( "type" );
 
         if ( typeNode == null )
         {
             throw new IllegalArgumentException( "No type node." );
         }
 
         type = typeNode.getValue();
 
         Xpp3Dom locationNode = node.getChild( "location" );
         Xpp3Dom locationURINode = node.getChild( "locationURI" );
 
         if ( locationNode == null && locationURINode == null )
         {
             throw new IllegalArgumentException( "No location or locationURI node." );
         }
         else if ( locationNode != null && locationURINode != null )
         {
             throw new IllegalArgumentException( "Both location and locationURI nodes are set." );
         }
 
         if (locationNode != null)
         {
             location = locationNode.getValue();
         }
 
         if (locationURINode != null)
         {
             locationURI = locationURINode.getValue();
         }
     }
 
     public void print( XMLWriter writer )
     {
         writer.startElement( "link" );
 
         writer.startElement( "name" );
         writer.writeText( name );
         writer.endElement(); // name
 
         writer.startElement( "type" );
         writer.writeText( type );
         writer.endElement(); // type
 
         if ( location != null )
         {
             writer.startElement( "location" );
             writer.writeText( location );
             writer.endElement(); // location
         }
         else if ( locationURI != null )
         {
             writer.startElement( "locationURI" );
             writer.writeText( locationURI );
             writer.endElement(); // locationURI
         }
         writer.endElement();// link
     }
 
     public boolean equals( Object obj )
     {
         if ( obj instanceof LinkedResource )
         {
             LinkedResource b = (LinkedResource) obj;
 
             return name.equals( b.name ) && ( type == null ? b.type == null : type.equals( b.type ) )
                 && ( location == null ? b.location == null : location.equals( b.location ) )
                 && ( locationURI == null ? b.locationURI == null : locationURI.equals( b.locationURI ) );
         }
         else
         {
             return false;
         }
     }
 
     public int hashCode()
     {
         return name.hashCode() + ( type == null ? 0 : 13 * type.hashCode() )
             + ( location == null ? 0 : 17 * location.hashCode() )
             + ( locationURI == null ? 0 : 19 * locationURI.hashCode() );
     }
 }