package org.opentrafficsim.road.network.factory.vissim;
   
   import java.io.Serializable;
   
   import org.opentrafficsim.core.network.NetworkException;
   import org.w3c.dom.NamedNodeMap;
   import org.w3c.dom.Node;
   import org.w3c.dom.NodeList;
   import org.xml.sax.SAXException;
  
  /**
   * <p>
   * Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * <p>
   * $LastChangedDate: 2019-01-06 01:39:32 +0100 (Sun, 06 Jan 2019) $, @version $Revision: 4833 $, by $Author: averbraeck $,
   * initial version Jul 23, 2015 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   */
  class SignalHeadTag implements Serializable
  {
      /** */
      private static final long serialVersionUID = 20150723L;
  
      /** No, cannot be null in implementation of signal head. */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      String no = "";
  
      /** No, cannot be null in implementation of signal head. */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      String sg = "";
  
      /** is the signalHead really located on this link? */
      Boolean activeOnThisLink = true;
  
      /**
       * Position of the signalHead on the link, relative to the design line, stored as a string to parse when the length is
       * known.
       */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      String positionStr = null;
  
      /**
       * Position of the signalHead on the link, relative to the design line, stored as a string to parse when the length is
       * known.
       */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      String signalGroup = null;
  
      /** Class name of the TrafficLight. */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      String className = null;
  
      String linkName;
  
      String laneName;
  
      /**
       * @param signalHeadTag SignalHeadTag;
       */
      public SignalHeadTag(SignalHeadTag signalHeadTag)
      {
          this.no = signalHeadTag.no;
          this.sg = signalHeadTag.sg;
          this.activeOnThisLink = signalHeadTag.activeOnThisLink;
          this.positionStr = signalHeadTag.positionStr;
          this.signalGroup = signalHeadTag.signalGroup;
          this.className = signalHeadTag.className;
          this.linkName = signalHeadTag.linkName;
          this.laneName = signalHeadTag.laneName;
      }
  
      /**
       *
       */
      public SignalHeadTag()
      {
          // TODO Auto-generated constructor stub
      }
  
      /**
       * Parse the TRAFFICLIGHT tag.
       * @param nodeList NodeList; the SignalHead nodes to parse
       * @param parser VissimNetworkLaneParser; the parser with the lists of information
       * @throws SAXException when parsing of the tag fails
       * @throws NetworkException when parsing of the tag fails
       */
      @SuppressWarnings("checkstyle:needbraces")
      static void parseSignalHead(final NodeList nodeList, final VissimNetworkLaneParser parser)
              throws SAXException, NetworkException
      {
          for (Node linksNode : XMLParser.getNodes(nodeList, "signalHeads"))
          {
  
              for (Node node : XMLParser.getNodes(linksNode.getChildNodes(), "signalHead"))
              {
                  NamedNodeMap attributes = node.getAttributes();
                  // make a link with its attributes
                  SignalHeadTag signalHeadTag = new SignalHeadTag();
 
                 if (attributes.getNamedItem("lane") == null)
                 {
                     throw new SAXException("SignalHead: missing attribute: lane");
                 }
                 String laneLink = attributes.getNamedItem("lane").getNodeValue().trim();
                 String[] laneLinkInfo = laneLink.split("\\s+");
                 signalHeadTag.linkName = laneLinkInfo[0];
                 signalHeadTag.laneName = laneLinkInfo[1];
 
                 if (attributes.getNamedItem("no") == null)
                 {
                     throw new SAXException("SignalHead: missing attribute: no");
                 }
                 signalHeadTag.no = attributes.getNamedItem("no").getNodeValue().trim();
 
                 if (attributes.getNamedItem("pos") == null)
                 {
                     throw new SAXException("SignalHead: missing attribute: pos");
                 }
                 signalHeadTag.positionStr = attributes.getNamedItem("pos").getNodeValue().trim();
 
                 if (attributes.getNamedItem("sg") == null)
                 {
                     throw new SAXException("SignalHead: missing attribute: sg");
                 }
                 signalHeadTag.signalGroup = attributes.getNamedItem("sg").getNodeValue().trim();
 
                 parser.getSignalHeadTags().put(signalHeadTag.no, signalHeadTag);
 
             }
         }
 
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString()
     {
         return "TrafficLightTag [name=" + this.no + ", positionStr=" + this.positionStr + ", className=" + this.className + "]";
     }
 
 }