gov/nasa/worldwind/formats/gpx/GpxTrack.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.formats.gpx;
   8
   9 import gov.nasa.worldwind.tracks.*;
  10 import gov.nasa.worldwind.util.Logging;
  11
  12 /**
  13  * @author tag
  14  * @version $Id: GpxTrack.java 2471 2007-07-31 21:50:57Z tgaskins $
  15  */
  16 public class GpxTrack extends gov.nasa.worldwind.formats.gpx.ElementParser implements Track
  17 {
  18     private String name;
  19     private int numPoints = -1;
  20     private java.util.List<TrackSegment> segments =
  21         new java.util.ArrayList<TrackSegment>();
  22
  23     @SuppressWarnings({"UNUSED_SYMBOL", "UnusedDeclaration"})
  24     public GpxTrack(String uri, String lname, String qname, org.xml.sax.Attributes attributes)
  25     {
  26         super("trk");
  27         // don't validate uri, lname, qname or attributes - they aren't used.
  28     }
  29
  30     public java.util.List<TrackSegment> getSegments()
  31     {
  32         return segments;
  33     }
  34
  35     public String getName()
  36     {
  37         return name;
  38     }
  39
  40     public int getNumPoints()
  41     {
  42         if (this.segments == null)
  43             return 0;
  44
  45         if (this.numPoints >= 0)
  46             return this.numPoints;
  47
  48         this.numPoints = 0;
  49         for (TrackSegment segment : this.segments)
  50         {
  51             //noinspection UNUSED_SYMBOL,UnusedDeclaration
  52             for (TrackPoint point : segment.getPoints())
  53             {
  54                 ++this.numPoints;
  55             }
  56         }
  57
  58         return this.numPoints;
  59     }
  60
  61     /**
  62      * @param uri
  63      * @param lname
  64      * @param qname
  65      * @param attributes
  66      * @throws IllegalArgumentException if <code>lname</code> is null
  67      * @throws org.xml.sax.SAXException
  68      */
  69     @Override
  70     public void doStartElement(String uri, String lname, String qname, org.xml.sax.Attributes attributes)
  71         throws org.xml.sax.SAXException
  72     {
  73         // don't validate uri, qname or attributes - they aren't used
  74         if (lname == null)
  75         {
  76             String msg = Logging.getMessage("nullValue.LNameIsNull");
  77             Logging.logger().severe(msg);
  78             throw new IllegalArgumentException(msg);
  79         }
  80         if (qname == null)
  81         {
  82             String msg = Logging.getMessage("nullValue.QNameIsNull");
  83             Logging.logger().severe(msg);
  84             throw new IllegalArgumentException(msg);
  85         }
  86         if (uri == null)
  87         {
  88             String msg = Logging.getMessage("nullValue.URIIsNull");
  89             Logging.logger().severe(msg);
  90             throw new IllegalArgumentException(msg);
  91         }
  92         if (attributes == null)
  93         {
  94             String msg = Logging.getMessage("nullValue.AttributesIsNull");
  95             Logging.logger().severe(msg);
  96             throw new IllegalArgumentException(msg);
  97         }
  98
  99         if (lname.equalsIgnoreCase("trkSeg"))
 100         {
 101             this.currentElement = new GpxTrackSegment(uri, lname, qname, attributes);
 102             this.segments.add((GpxTrackSegment) this.currentElement);
 103         }
 104     }
 105
 106     /**
 107      * @param uri
 108      * @param lname
 109      * @param qname
 110      * @throws IllegalArgumentException if <code>lname</code> is null
 111      * @throws org.xml.sax.SAXException
 112      */
 113     @Override
 114     public void doEndElement(String uri, String lname, String qname) throws org.xml.sax.SAXException
 115     {
 116         // don't validate uri or qname - they aren't used
 117         if (lname == null)
 118         {
 119             String msg = Logging.getMessage("nullValue.LNameIsNull");
 120             Logging.logger().severe(msg);
 121             throw new IllegalArgumentException(msg);
 122         }
 123         if (lname.equalsIgnoreCase("name"))
 124         {
 125             this.name = this.currentCharacters;
 126         }
 127     }
 128 }